TAMIL NADU TRANSMISSION CORPORATION LIMITED Consolidation of LC for the month of April 2017 at 3rd TNSOCC Meeting

Transmission Lines / Elements Details Proposed Date & Time

Name of Voltage Recommend From To No. of Sl. No From Substation To Substation Purpose conditions From Date To Date Remarks SE Approval the LDC Level (KV) ations Time Time days

On 110KV Kayathar - Eppodumvandaran A) For Monthly maintenance work. B) For Tower to 1 Madurai 110 KV KAYATHAR 230 KV During the LC period. there will be no supply in entire feeder . Hence no SS affected POSSIBLE Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 17:00 1 0 Approved feeder breaker with CT & entire line. Tower inspection

subject to 110KV ARASUR feeder Breaker,CTs and 2 Erode 110 KV THINGALUR 230 KV Monthly Maintenace Works 110KV VELAMPALAYAM SS availing total shutdown.Feeder will be back charged. possible Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 17:00 1 velampalayam ss Approved Line isolators. availing tsd

subject to AUTO Transformer 1,HV 1 and LV 1's 3 Erode 230 KV THINGALUR 230 KV Monthly Maintenance Works. 110KV VELAMPALAYAM SS availing total shutdown.No SS will be affected. possible Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 17:00 1 velampalayam ss Approved Breakers with CTs availing tsd

subject to 110 KV ERODE - THIRUVACHI FEEDER DURING LC PERIOD METTUKADAI 110 KV SS UNDER TOTAL SHUTDOWN 4 Erode 110 KV Erode 110 KV MONTHLY MAINENANCE WORK. possible Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 15:00 1 mettukadai ss Approved BREAKER AND CT CONDITION. NECESSARY CONCURRENCE OBTAINED FROM SE/EEDC/ERODE. availing tsd

For releasing the jumpers at Loc.33 towards Alagarkoil and for releasing the Conductors from Loc 1)110/33-11KV Anupanadi SS loads will be under Interruption . 2)110KV Pasumalai - sub to approval of No 33 to 34 so as to issue LC for replacement of DC Alagarkoil -1 feeder will be kept radial from Alagarkoil upto Vandiyur SS 3)110KV long lc and 110KV Pasumalai - Alagarkoil -1 # Section 5 Madurai 110 KV PASUMALAI 230 KV Line on DC Towers with Leopard Conductor into DC Pasumalai - Alagarkoil -1 feeder will be kept radial from Pasumalai upto Avaniyapuram POSSIBLE Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 11:00 1 approval for Approved between Avaniyapuram and Vandiyur SS Line on DC Towers with Panther conductor in the SS 4) Concurrence obtained from SE/Metro / Madurai for the Interruption and from the interruption to section between from T.Loc 34 to T.Loc 44 by the SE/Madurai and SE/Sivaganga for the above arrangements Anupanadi ss. TLC wing

1) The sakthisugars feeder will be kept fed from Alkl end through 110KV Alagarkoil - For releasing the jumpers towards Sakthi Sugars at Karaikudi Feeder so as to feed Uranganpatty SS, Nattarmanaglam , Nelmudikarai and DP Loc No 33/1 and for releasing the Conductors Arasanoor SS upto Sakthisugars. 2) At Uranganpatty SS the switch towards Pasumalai sub to approval of from DP Loc No 33/1 to DP Loc No 33/2 so as to SS will be kept opened and earthed.3)110KV Sakthisugar -Sivaganga Feeder will be in long lc and Approved Note to be 110KV Pasumalai - Sakthi Sugars # Section 6 Madurai 110 KV PASUMALAI 230 KV issue LC for replacement of DC Line on DC Towers grid 4)110KV Alagarkoil - Karaikudi Feeder will be radial from Karaikudi upto POSSBLE Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 11:00 1 approval for put up for approval between Pasumalai and Uranganpatty with Leopard Conductor into DC Line on DC Towers Narasingampatti SS. 5) At Narasingampatti SS the switch towards Alagarkoil will be kept interruption to (15 days) with Panther conductor in the section from DP Loc open. 6) 110/33-11KV Villapuram SS will be under Interruption.7)Concurrence obtained Villapuram ss. No 33/ 2 to T.Loc 44 by the TLC wing from SE/Metro / Madurai for the Interruption and from the SE/Madurai and SE/Sivaganga for the above arrangements

110 KV N.G PALAYAM SS,110 KV PERIYAKODIVERY SS,110 KV ALUKULI SS,110 KV 110 KV PERIYAKODIVERY FEEDER FOR GRT RELAY TESTING WORK BY P&C/GOBI 7 Erode 110 KV GOBI 230 KV KAVILIPALAYAM AND 110 KV SHENBAGAPUDUR SS MAY AVAIL TOTAL SHUTDOWN Possible Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 17:00 1 0 Approved BREAKER,CT'S WITH LINE SWITCH AND ALSO FOR MONTHLY MAINTENANCE WORK AS PER THE CE/D/Erode APPROVAL.No other SS will affected.

230 KV Salem Steel Plant I # - Its CT, 8 Erode 230 KV Salem 400 KV Monthly Maintenance Work possible Sat, 01-Apr-2017 8:00 Sat, 01-Apr-2017 17:00 1 0 Approved BREAKER, BUS & LINE SWITCHES Ltd.,

230 KV Salem Steel Plant I # - Its CT, repeat of 9 Erode 230 KV Salem 400 KV Monthly Maintenance Work Sat, 01-Apr-2017 8:00 Sat, 01-Apr-2017 14:00 1 0 Repeat BREAKER, BUS & LINE SWITCHES Ltd., 52728

1.For attending breaker and it's CT's and isolators During the LC period 110KV VGTPS - Perungulam and 110KV Valuthur - Perungulam 110KV Valuthur - Perungulam feeder entire Monthly Maintenance work at Valuthur SS.2.For feeders will be cut off from service. 110KV Arkay - Mandapam feeder will be up to sub to Total s/d of 10 Madurai 110 KV VALUTHUR 230 KV POSSIBLE Sat, 01-Apr-2017 10:00 Sat, 01-Apr-2017 17:00 1 Approved and 110KV bus entire at Perungulam SS. attending all 110KV bus isolators maintenance work Mandapam SS only. Hence, there is 'no' supply interruption to 110KV Mandapam SS. perungulam ss at Perungulam SS. Total shut down will be availed at 110KV Perungulam SS.

During the L.C period the 110KV Amaravathipudur SS under TSD and the feeder will be sub to Total s/d of 11 Madurai 110 KV KARAIKUDI 230 KV On 110KV KKDI-VLDR # S/B KKDI & TVDI. Flashed over Disc replacement work. tied with grid through 110KV Devakottai feeder.Hence there will be no interruption of POSSIBLE Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 17:00 1 Amaravathipudur Approved Supply. ss

110KV Kadalangudy- Neyveli TS I feeder No interruption to any SS. 110KV Jayankondam SS and Papakudy SS proposed to For Line premonsoon inspection and rectification 12 Madurai 110 KV KADALANGUDI 230 KV (line portion between 110KV Thirupanandal shutdown. 110KV Kadalangudy- Neyveli TS I feeder will be in radial condition up to POSSIBLE Sat, 01-Apr-2017 10:00 Sat, 01-Apr-2017 16:00 1 Sub to total s/d Approved work. SS and Srimushnam SS) 110KV Thirupanandal SS.

FOR REPLACEMENT OF LIFE SERVED 245V DURING THE PERIOD OF SHUTDOWN , EXCEPT 230 KV NCTPS-I FEEDER ALL 13 Chennai 230 KV TONDIARPET 230 KV 230 KV NCTPS-I FEEDER Pending Sat, 01-Apr-2017 06:00 Mon, 03-Apr-2017 16:00 3 Approved BREAKER IN 230 KV NCTPS- I FEEDER OTHER FEEDERS AND EQUIPMENTS WILL BE IN SERVICE.

(i) 110KV SBT - RNPM II # Bkr, CTs and During the LC period,(i) Gandhigramam SS is availing total shutdown the feeder will be sub to load section bet. SBT and Gandhigramam SS(ii) radial from other end upto Gandhigramam SS.(ii) Sengurichi and Sendurai SS are 14 Madurai 110 KV SEMBATTY 230 KV 1. Monthly maintenance work2. Tree cutting work POSSIBLE Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 17:00 1 condition and toal Approved 110KV SBT - Alundur # Bkr, CTs and section availing total shutdown, the feeder will be radial from other end upto Thamaraipadi s/d bet. SBT and Thamaraipadi SS SS.Hence no interruption to any SS. FOR(tlc Work) stringing between tower loc 51/0 to 52/0 in the newly erected 230kv dc line from 110KV KAYATHAR- EPPODUMVENDRAN 15 Madurai 110 KV KAYATHAR 230 KV Kayathar400KVSSto tuticorin autoSS Cross Over During the LC Period,There will be nosupply in entire line POSSIBLE Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 17:00 1 0 Approved FEEDER ENDIRE LINE the 110KV Kayathar-Eppodumvendran Feeder (For Safety Purpose) Subject to load 16 Chennai 230 KV Thiruvalam 400 KV 230KV Thiruvalam Link -II Feeder Maintenance & GRT periodical Relay test 230 Kv Thiruvalam Link-II feeder kept off condition at both end. Posssible Sat, 01-Apr-2017 09:00 Sat, 01-Apr-2017 17:00 1 Approved condition

During the Line Clear period,1)Kallivelampatty SS and Naranapuram SS under total Shut For Monthly maintenance work(Kallivelampatty SS subject to tsd 17 Erode 110 KV ARASUR 230 KV down.2) 110 KV KPR EHT (Kaniyur unit) and 110 KV Itchipatty ss will be fed through 110 possible Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 12:00 1 Approved and Its CTs. and Naranapuram SS total Shut down) being realized KV Arasur-Kaniyur #. During the LC period, a)110KV Thanjavur- Alundur feeder radially from other end. 110KV Alundur - Thanjavur Feeder breaker a)Preventive Monthly maintenance work. b)Relay 18 Madurai 110 KV ALUNDUR 230 KV b)110KV Ambigapuram SS avail Total shutdown. c) All other 110 KV feeders will be in POSSIBLE Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 17:00 1 0 Approved and CT's only. testing work. service. c) There will be no interruption of supply to any other feeders & SS. 110 KV Asr-Palladam feeder Section between Itchipatty SS,Naranapuram During the LC period 110 KV Kalivelampatty SS and 110 KV Naranapuram SS availing subject to tsd 19 Erode 110 KV ARASUR 230 KV For PMI Works By AEE/L/Palladam possible Sat, 01-Apr-2017 8:00 Sat, 01-Apr-2017 14:00 1 Approved SS,Kalivelampatty SS & 110 KV Palladam total shutdown. being realized SS

Carryout Monthly Maintenance works by 110 KV Gurubarapally feeder breaker,CTs, Maintenance wing and Lines wing coconut tree subject to KARIAMANGALAM 230 110 KV Krishnagiri SS Availing total Shutdown and its Ideally charged feeder hence there 20 Erode 110 KV Line switch and Line Between 230 KV branch removal of line between 230 KV possible Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 14:00 1 krishnagirir ss Approved KV is no interruption of power supply. Karimangalam SS - 110 KV Krishnagiri SS Karimangalam SS - 110 KV Krishnagiri SS at Loc availing tsd No: (63-64) and Loc No: 34 - Disc Replacement.

110 KV Kadalangudi - Aduthurai - Neyveli feeder(Line portion between 110 KV For premonsoon and rectification works by the 21 Madurai 110 KV KADALANGUDI 230 KV POSSIBLE Sat, 01-Apr-2017 10:00 Sat, 01-Apr-2017 17:00 1 0 Approved Thiruppanandal SS and 110 KV Paappakudi AEE/Lines/Thanjavur. SS) subject to the 22 Erode 230 KV METTUR AUTO 230 KV 100MVA AUTO TRANSFORMER I OLTC OIL REPLACEMENT WORK During the LC PERIOD 100MVA AUTO TRANSFORMER II WILL BE IN SERVICE possible Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 18:00 1 other auto tr Approved loading limit

1) Monthly maintenance works by the During the LC period,1) Thanjavur 110 KV Grid SS will avail shutdown in 33 KV AEE/Mtce/Thanjavur,2) Relay replacement works Additional Total 100 MVA Auto Transformers-1 & 2, HV- 1 & feeders,2) further only if required, 110 KV Thanjavur-NTKudi feeder's tie may be kept NOT 23 Madurai 230 KV THANJAVUR 230 KV (i.e. Transformer differential relay from static to Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 17:00 1 s/d may be Not Approved 2, LV- 1 & 2 Breakers & CTs. (one by one) opened at Thanjavur 230 KV SS for containing auto transformer's load,3) all 230 KV & POSSIBLE numerical) in Auto Transformer-2 by the programmed other 110 KV feeders will be in tied condition,4) no supply interruption to any SS. AEE/P&C/Thanjavur.

1).To carryout Monthly maintenance works by 110 KV palladam - veerapandy feeder subject to AEE/maintenance/palladam2). To carryout During the LC period 1). 110 KV Veerapandy SS availing Total shutdown2). No other Sub 24 Erode 110 KV PALLADAM 230 KV breaker,CT's and line side isolator with line possible Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 17:00 1 veerapandy ss Approved Premonsoon inspection on Lines by station will be affected up to Kalelampatty SS and Naranapuram SS availing tsd AEE/Lines/Palladam

1).To carryout Monthly maintenance by During LC period 1).110 KV Veerapandy SS availing Total shutdown2). No other Auto transformer I and its HV and LV side subject to the tsd 25 Erode 230 KV PALLADAM 230 KV AEE/Maintenance/Palladam2). To carryout Annual substation will be affected3). 110 KV Pongalur SS will be fed from 230 KV Ingur SS if possible Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 17:00 1 Approved breaker ,CT's and LAS relief relay test by AEE/P&C/Palladam load relief required

1)110 KV VEERAPANDY SS,110 KV NARANAPURAM SS AND 110 KV AUTO TRANSFORMER I HV, LV Subject to load 26 Erode 230 KV PALLADAM 230 KV TO CARRYOUT MONTHLY MAINTENANCE WORK KALIVELAMPATTY SS AVAILING TOTAL SHUTDOWN2)OTHER THREE AUTO Possible Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 17:00 1 Approved BREAKER,CT'S AND LAS condition TRANSOFORMERS WILL BE IN SERVICE 3)NO OTHER SS WILL BE AFFECTED

During the period of LC i)The 110KV Karnambut SS, 110KV Sathuvachari SS, 110KV Arcot SS, of VEDC/Vellore are availing Total shutdown on 01.04.2017.The Total Shutdown approved and concurrence obtained by Chief Engineer/Distribution / Vellore Differential relay by GRT Wing /Thiruvalam i))For fixing of Differential relay in Auto Tr-I AND and monthly maintenance work.ii) On 110KV O/L&E/L Relay in 110KV Velore-I Feeder by GRT IV,LV-IV will be in service and cater the SS Loads. iii)Auto-Tr-I ,HV-I,LV-I will be in 27 Chennai 230 KV THIRUVALAM 230 KV Wing /Thiruvalam and monthly maintenance Possible Sat, 01-Apr-2017 09:00 Sat, 01-Apr-2017 17:00 1 0 Approved for fixing of O/L & E/L Relay in 110KV Vellore- work.ii)230KV Link-II Feeder for monthly I Feeder and monthly maintenance workiii) maintenance work On 230KV Link-II Feeder Breaker and its and 230KV Mosur feeders will be in service and cater the SS Loads. Hence there will be no interruption of supply please.

110 KV Thiruvalam � Vellore I feeder (In 28 Chennai 110 KV THIRUVALAM 230 KV between 230 KV Thiruvalam SS � 110kv For EHT Line Maintenance Works. Possible Sat, 01-Apr-2017 09:00 Sat, 01-Apr-2017 14:00 1 0 Approved 110KV Karnambut SS, 110KV Sathuvachari SS, 110KV Arcot SS, are availing total Vellore SS). Shutdown.

For replacement of chipped disc at loc: 7 & EHT Line • condition at 400KV Thiruvalam & 230KV Thiruvalam SS. ii. All other 230 Possible Subject to load 29 Chennai 230 KV THIRUVALAM 230 KV 230KV Thiruvalam - Link II feeder. Sat, 01-Apr-2017 09:00 Sat, 01-Apr-2017 14:00 1 Approved Maintenance Works. KV feeders 230KV Link I, Mosur, Chittoor feeders are in service.Hence there will be no (Repeat) condition interruption of supply please.

Sub to submission For Removal of dropper jumper from Bus and line During the LC period, Auto Transformer-I,HV-I,LV-I will be under hand tripped condition of BP copy for ANUPPANKULAM 230 side jumper of 230KV Anuppankulam - Kayathar and 230KV Anuppankulam-Kayathar feeder &230KV Anuppankulam-Madurai feeder hand 30 Madurai 230 KV 230KV Northern Bus entire. POSSIBLE Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 12:00 1 230ANPM-KYR # Approved KV feeder (Augmentation of 100MVA to 160MVA Auto tripped condition and Auto Transformer-II & III will be fed from 230KV Anuppankulam- for Dismantling of Transformer work) Sterlite source only. ISO

110KV Karimangalam feeder, LV II and HV II Breakers will be Hand tripped. BS / Auto side isolators of HV II, Bus side isolator of LV II, BS/LS isolators of Karimangalam feeder Auto I, HV I, LV I & Auto II, HV II, LV II and Breaker to be opened. 110KV Krishnagiri SS avail total shut down as per approval GURUPARAPALLI 230 Maintenance work in Auto I, Auto II, HV II, LV II and Subject to load 31 Erode 230 KV 110KV Karimangalam feeder Breaker ( One received from CE/D/Vellore. Hosur phase II and Shoolagiri 110KV SS will be fed by Auto Possible Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 14:00 1 Approved KV 110KV Karimangalam feeder Breaker (One by One) condition by One) I. (After completion of maintenance works in Auto I side, then take LC in Auto II - HV & LV maintenance works). Concurrence obtained from SE/O/Thiruvalam and SE/KEDC/Krishnagiri)

230KV KPH3 Feeder to KPH4 Feeder Pre-Monsoon Subject to load 32 Erode 230 KV KUNDAH PH3 230KV KPH-3 Feeder to KPH4 Feeder Bus and Line both end open condition Earth switch closed condition. Possible Sat, 01-Apr-2017 9:00 Sat, 01-Apr-2017 17:00 1 Approved Inspection work(PMI) and Maintenance work. condition

33 Chennai 110 KV THARAMANI 230 KV 110 KV Siruseri feeder Monthly Maintenance work Ideal feeder Possible Sat, 01-Apr-2017 09:00 Sat, 01-Apr-2017 17:00 1 0 Approved

TO REPLACE THE DETECTIVE ISOLATER BOX DURING THE ABOVE SHUTDOWN PERIOD 230KV ALAMATHY-MANALI-1 FEEDER 34 Chennai 230 KV Alamathy 400 KV 230KV MANALI-1 Possible Sun, 02-Apr-2017 09:00 Sun, 02-Apr-2017 17:00 1 To be discuss Approved BY NEW ONE IN 'D' SWITCH WILL NOT BE IN SERVICE.

GENERATI subject to the grid 35 Erode NG KUNDAH PH3 Unit I For monthly maintenance work Unit under shutdown condition , SF6 breaker open condition possible Sun, 02-Apr-2017 8:00 Sun, 02-Apr-2017 17:00 1 Approved condition STATIONS

GENERATI During the above LC period 230KV MTPH-MTPS Feeder and 230KV MTPH-AUTO SS machine 4 Generator,Power Transformers For Machine 4 Individual spell Annual overhauling approved 36 Erode NG METTUR TPH Feeder will be in service and machine 1,2,3 &4 will be in common spell AOH works and possible Sun, 02-Apr-2017 7:00 Tue, 04-Apr-2017 17:00 3 Approved and its Auxiliaries works from 02.04.2017 to 21.04.2017 (20 Days) schedule STATIONS PWD Demand meet out by Dam power house units. During the period of shutdown 1)100MVA Auto Transformer I will be inservice. 2)110KV AnnaNagar feeder loads to be transferred to 230KV Korattur SS feeding 3)110KV Cooks 37 Chennai 230 KV KILPAUK 230 KV 100MVA Auto Transformer II Routine Maintenance work Possible Sun, 02-Apr-2017 09:00 Sun, 02-Apr-2017 16:00 1 0 Approved Road feeder tie to be opened at kilpauk SS end & 110KV Cooks Road SS will be radially fed by BBGTPS

subject to the 38 Erode 230 KV METTUR AUTO 230 KV 100MVA AUTO TRANSFORMER II OLTC OIL REPLACEMENT WORK DURING THE LC PERIOD 100MVA AUTO TRANSFORMER I WILL BE INSERVICE possible Sun, 02-Apr-2017 9:00 Sun, 02-Apr-2017 18:00 1 other auto tr Approved loading limit

GENERATI UNIT-IV GENERATTOR SF6 BREAKER, 39 Erode NG KUNDAH PH2 POWER TRANSFORMER AND ITS FOR MONTHLY MAINTENANCE WORK SF6 BREAKER OFF IN CONDITION TOP AND BOTTOM BUS OPEN IN CONDITION Possible Sun, 02-Apr-2017 9:00 Sun, 02-Apr-2017 17:00 1 0 Approved STATIONS ACCESSIORIES

GENERATI 40 Erode NG KUNDAH PH1 UNIT NO: 1 FOR MONTHLY MAINTENANCE WORK DURING THE LC PERIOD UNIT NO 1 WILL BE UNDER NOT S/B CONDITION.. 0 Sun, 02-Apr-2017 8:00 Sun, 02-Apr-2017 17:00 1 0 Approved STATIONS

230 KV Salem Steel Plant II # - Its CT, feeder 1 lc 41 Erode 230 KV Salem 400 KV Monthly Maintenance Work postponed Mon, 03-Apr-2017 8:00 Mon, 03-Apr-2017 14:00 1 Approved BREAKER, BUS & LINE SWITCHES recommended

1.No SS will be affected during the LC Period.II.Nambiyur 110 KV SS,Karattupalayam to be scheduled 42 Erode 110 KV GOBI 230 KV I.110 KV Gobi - Bhavanisagar feeder entire Line maintenance and tree cutting works 110 KV SS,Thoppampalayam 110 KV SS and Bhavanisagar 110 KV SS has programmed postponed Mon, 03-Apr-2017 10:00 Mon, 03-Apr-2017 16:00 1 Approved on 03.04.2017 Total Shut down on 03.04.2017

subject to 230 kv mtps 3 to gobi 43 Erode 230 KV MTPS MTPS-I to Anthiyur 230KV Feeder bay entire Monthly maintenance Programmed LC possible Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 Approved feeder loading condition

44 Erode 230 KV ANTHIYUR230KV 230KV MTPS-I entire feeder For monthly maintenance work MTPS-I end also programmed to avail LC on 03.04.17. 0 Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 16:00 1 0 Approved

During the LC period 230KV MTPS-I feeder,Auto Transformer-II,and 230KV Bus coupler subject to 230 kv breaker will be kept in hand tripped condition.MTPS-I end also programmed to avail LC in mtps 3 to gobi 45 Erode 230 KV ANTHIYUR 230 KV 230KV Bus section-II entire. For annual maintenance of 230KV Bus section -II possible Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 16:00 1 Approved 230KV Anthiyur-MTPS-I feeder on 03.02.17.During the LC period Auto Transformer-I feeder loading along with 230KV Gobi feeder will be in service. condition

1)230 KV Pasumalai - Checkanurani # - II a)Maintenance Works of BKR & CT,LI Only.b)Tree 46 Madurai 230 KV PASUMALAI 230 KV EE / O / CKNI has also programmed POSSIBLE Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 14:00 1 0 Approved BKR & CT,LI only 2)Line Entire. cutting works

During LC period i)110 KV Veerasigamani # WFSS will be fed from Veerasigami-I # by On 110KV Kodikurichi-Veerasigamani II # i) Monthly maintenance workii)For Replacement of closing AB switch towards Veerasigamani at Echantha SS end. ii) 110KV Puliyangudi, 47 Madurai 110 KV KODIKURICHY 230 KV Section between Kodikurichi-Veerasigamani- POSSIBLE Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 0 Approved Defective Insulator at Various locations. Naranapuram, Viswanathaperi SS will be fed from 110KV Nallamanaickenpatty SS by Puliyangudi. closing AB switch towards Viswananthaperi SS at Nallamanaickenpatty SS end.

On 230 KV SR Puthur - Koodankulam feeder During the LC period 230 KV SR Puthur - Sankaneri feeder will be in service.Hence No Sub to load 48 Madurai 230 KV SRPUDUR 230 KV Monthly Maintenance work POSSBLE Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 14:00 1 Approved breaker CT. SS will be affected. condition

1) During the LC period there will be NO supply in P.Tr-1 and its 33KV feeders. 2) If there 230/33KV Power Transformer-1 HV,LV 49 Madurai 230 KV AMUTHAPURAM 230 KV Monthly Maintenance Work is wind generation its 33KV feeders paralleled with other power transformers. 3) No SS POSSIBLE Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 Sub to wind gen. Approved Breakers with CT's and its 33KV feeder will be affected. 4) Concurrence obtained from SE/NCES/TIN.

FOR GRT RELAY TESTING WORK BY P&C/GOBI 110 KV NAMBIYUR SS,110 KV KARATTUPALAYAM SS,110 KV BHAVANI SAGAR 110 KV BHAVANI SAGAR FEEDER subject to tsd 50 Erode 110 KV GOBI 230 KV AND FOR REPLACEMENT OF COMPRESSOR IN SS,110 KV THOPPAMPALAYAM SS AND 110 KV THALAVADY SS MAY AVAIL TOTAL possible Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 Approved BREAKER,CT'S WITH LINE SWITCH being realized SF6 BREAKER DUE TO AIR LEAKAGE SHUTDOWN AS PER CE/D/Erode APPROCVAL,NO OTHER SS WILL BE AFFECTED

1.110 KV NAMBIYUR SS,110 KV KARATTUPALAYAM SS,110 KV BHAVANI SAGAR SS,110 KV THOPPAMPALAYAM SS,110 KV GOBI SS AND 110 KV THALAVADY SS AUTO TRANSFORMER I HV,LV BREAKER subject to tsd 51 Erode 230 KV GOBI 230 KV FOR MONTHLY MAINTENANCE WORK MAY AVAIL TOTAL SHUTDOWN AS PER CE/D/Erode APPROCVAL,2.NO OTHER SS possible Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 Approved AND CT'S being realized WILL BE AFFECTED.3.AUTO TRANSFORMER II AND III ARE IN SERVICE,IT MAY CATER THE LOAD Due to 110 SBT- 110KV ALKL-Sempatty 2 # breaker with C.T DURING THE L.C period the feeder will be radial from sempatty end ,hence there will be NOT ALKL# sec bw Subject to EE/SLDC 52 Madurai 110 KV ALAGARKOIL 230 KV for monthly maintenance& GRT relay testing work Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 16:00 1 only. no interruption of supply please. POSSIBLE V,kurumpapatty approval and Natham LC subject to the 1. CAPACITOR NO :I BREAKER, CT'S AND DURING THE L.C PERIOD CAPACITOR BANK NO :II WILL CATER THE STATION 53 Erode 230 KV UNJANAI 230 KV FOR MONTHLY MAINTENANCE WORK possible Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 15:00 1 voltage profile in Approved BANKSIDE ISOLATOR ONLY WAR LOADS. the grid

110 kv theni-sempatty I & II Breaker with CT SUB TO LOAD 54 Madurai 110 KV then I 230 KV monthly maintenance work. monthly maintenance work. POSSIBLE Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 Approved one by one. CONDITION

CHECKANURANI SW For Monhthly Maintenance work and Line 55 Madurai 230 KV 230KV CKNI-Pasumalai-II feeder Entire During LC Period there will be no supply in the entire feeder POSSIBLE Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 0 Approved STATION 230 KV Maintenance Work SUB TO LOAD 56 Madurai 230 KV kinnimangalam 230 KV AUTO TRANSFORMER 1 Monthly maintenance work Other 2 transformers will be in service and scatter the load POSSIBLE Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 13:00 1 Approved CONDITION SUB TO LOAD 57 Madurai 230 KV kinnimangalam 230 KV AUTO TRANSFORMER 2 Monthly maintenance work other 2 auto transformers will be in service and scatter the load POSSIBLE Mon, 03-Apr-2017 14:00 Mon, 03-Apr-2017 17:00 1 Approved CONDITION

Sub to submission During the Lc Period (03.04.17 (08.00Hrs) to 05.04.16 (18.00Hrs) 110KV PDKT #'r S/B For Tower to Tower inspection work and to open of Approval copy Approved Subject to Kanadukathan SS Tapping and Thirumayam SS for NHAI work by TLC Wing.). 110KV NOT 58 Madurai 110 KV KARAIKUDI 230 KV On 110KV Kanadukathan # Entire. jumper for TLC work B/W Kanadukathan Tapping & Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 and drawing. LC EE/SLDC/ Madurai Kanadukathan SS will be radially fed from 230KV SS KKDI SS. Hence there will be No POSSIBLE Thirumayam SS. to be applied for 3 approval interruption of Supply. days UNIT IN SERVICE. ALL 400KV KARAMADAI-I&II ,PALAVADI-I&II FEEDER ARE IN MONTHLY MAINTENANCE WORKS AS subject to the load 59 Erode 400 KV MTPSII 230/400KV ICT-I SERVICE. ALL 230KV FEEDERS MTPS-I,GOBI,METTUR AUTO AND STANDBY possible Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 Approved APPROVED BY OCC condition existing TRANSFORMER EXCEPT THINGALUR FEEDER ARE IN SERVICE.

During the LC period, a) The other end also availing LC on the same feeder. b) The 110KV TRICHY - ALUNDUR I Feeder Intermediate 110 KV Ammapettai SS availing total shutdown for monthly maintenance Approved Subject to 60 Madurai 110 KV TRICHY 230 KV breaker, CTs and line isolators and line 0 POSSIBLE Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 16:00 1 sub to Total s/d works. c) All other 110 kv feeders will be in tied condition. d) There will be no interruption load condition entire. entire of supply to any of the SS.

110 KV Suruliyar - Vannathiparai feeder During the above period, Vannathiparai SS will avail total shut down. There is no other SS 61 Madurai 110 KV SURULIYAR For attending monthly maintenance work. POSSIBLE Mon, 03-Apr-2017 10:00 Mon, 03-Apr-2017 16:00 1 sub to Total s/d Approved breaker with CT and line side switch in this feeder.

OTHAKKAL MANDABAM 230 KV OKM-Palladam Feeder Entire For Polluted disc replacement work by lines wing 62 Erode 230 KV During the LC period, the other 230 KV feeders are in service to cater the SS loads. possible Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 0 Approved 230 KV (Breaker, CT's, 89M1, 89M2 & 89L Isolators) and monthly maintenance works.

230 KV Bus Coupler Breaker & B'Bus CVT 230 KV Bus Coupler and B'Bus CVT are in stand by equipment since load flow does not 63 Erode 230 KV EACHANGADU 230 KV MONTHLY MAINTENANCE WORK POSSIBLE Mon, 03-Apr-2017 10:00 Mon, 03-Apr-2017 17:00 1 0 Approved Only affected.

110KV SBT - Alagarkovil II # section bet. During the LC period the feeder will be radial from SBT upto V.K.Patti SS and radial from 64 Madurai 110 KV SEMBATTY 230 KV Tree cutting work POSSIBLE Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 0 Approved V.K.Patti and Natham SS other end upto Natham SS. Hence no interruption to any SS.

1)Line inspection and rectification work 2)Maintenance work 3)Relay testing work at No interruption to any SS. All other feeders will be in tied condition. PPN Plant is under 65 Madurai 230 KV KADALANGUDI 230 KV 230KV Kadalangudy- PPN I feeder entire POSSIBLE Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 0 Approved Kadalangudy SS end. 4)Relay testing work at PPN shutdown. plant end.

110 KV Tondiarpet - Vyaserpadi I feeder load will be transfer to 110 KV Tondiarpet - Subject to CBD 66 Chennai 110 KV KORATTUR 230 KV 110 Kv Tondiarpet - Vyaserpadi I feeder Jumper tightness at various locations Possible Mon, 03-Apr-2017 09:00 Mon, 03-Apr-2017 17:00 1 Approved Vyaserpadi II feeder concurrence

i) For the transportation of 3Nos. 230KV New PTs to i) During the LC period, all the 230KV feeders will be in OFF condition at both the ends working spot ii) Dismantling of existing 230KV 'Y' and Auto-I&II will be in tripped condition at 230KV Sipcot SS end and all 110KV feeders Phase PT (Grompton Greaves Make) iii) Erection of Sub Total s/d of TUTICORIN -SIPCOT On 230KV Main Bus entire (both Bus section and 110KV Bus will in service for the grid stability purpose. ii) M/s. Subject to Total 67 Madurai 230 KV 3Nos. Mehru make 230KV PTs and its Droppers and POSSIBLE Mon, 03-Apr-2017 6:00 Mon, 03-Apr-2017 18:00 1 inter ss to manage 230 KV I & II with PT-I&II) IBPGCL/Velayuthapuram generation will be in shutdown condition and M/s. IBTPL/ shutdown Jumpers etc. iv) Secondary connection and testing the Load. Samynatham unit is already under shutdown condition and necessary consent obtained by P&C wing. v) lubricating of (4Nos.) 3A,4A,5A and from M/s. Ind.Bharat plants and no ss will be affected please. Bus section-II (BCS-II) 230KV AB switches.

subject to the AUTO TRANSFORMER II ,HV II & LV II 68 Erode 230 KV UDUMALPET 230 KV FOR MONTHLY MAINTENANCE WORKS 3 AUTOS ARE IN PARALLEL . LOADS ARE SHARED WITH OTHER TWO AUTOS. possible Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 other auto trs Approved COMPLETE loading limit

subject to 230 kv Jumper cone Tightness Checking at MTPS-I- mtps 3 to gobi 69 Erode 230 KV METTUR AUTO 230 KV 230KV MTPS-I- Anthiyur feeder Entire Programmed LC at MTPS-I on 03.04.2017 possible Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 14:00 1 Approved Anthiyur Bay feeder loading condition

During LC period there is no SS will be affected since there is inter connected SS fed from 70 Erode 110 KV Udumalpet 110 KV Monthly Maintenance work possible Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 0 Approved other end.

1. During the above LC Period, 110Kv Kallakudy I # Breaker is in H/T condition at 230KV Tahtchankurichy SS . 2.110Kv Thatchankurichy I# Breaker is in H/T condition at 110KV kallakudy Grid SS. 3.Bus and Line Isolator towards 110KV Kallakudy Grid SS will be kept 110 KV SMPM-Kallakudi -I # CT's , Breakers in open condition at 230KV Thatchankurichy SS. 4.Line Isolator towards 230KV 71 Madurai 110 KV SAMAYAPURAM 230 KV Monthly Maintenance Works and Line Patrol Work. POSSIBLE Mon, 03-Apr-2017 10:00 Mon, 03-Apr-2017 17:00 1 0 Approved and entire line portion (tied feeder) . Thatchankurichy SS will be kept in open condition at 110KV Kallakudy Grid SS. 5. Earth switch will be kept in closed condition at 110Kv Kallakudy grid ss and 230KV Thatchankurichy SS. 6.110 KV Kallakudi-II # will be in tied condition. 7.There will be no interruption to any other SS.

subject to the During the Line Clear period,1)remaining 2 numbers 24 MVAR Capacitor banks will be in 72 Erode 110 KV ARASUR 230 KV 110 KV CB-I Breaker,CTs and Cell units. For Monthly maintenance work possible Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 15:00 1 voltage profile in Approved service. the grid

Already approved 73 Chennai 230 KV Tondiarpet 230KV TONDIARPET - NCTPS Stage I-1 Jumper tightness. Tower to tower inspection. All other feeder in service. Possible Mon, 03-Apr-2017 05:00 Tue, 04-Apr-2017 10:00 2 To be discuss from 1st April 2017 to 3rd April 2017

a) Preventive Monthly maintenance work. c) During the LC period, a) Intermediate 110KV Ammapettai SS Also avail total shut down. 110KV Alundur - Trichy- Feeder breaker,CT's, 74 Madurai 230 KV ALUNDUR 230 KV Premonsoon inspection and Tree cutting work. b) All other 110 KV feeders will be in service c)There will be no interruption of supply to POSSIBLE Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 Sub to Total s/d Approved and Line Isolators. B)Relay testing work. any other feeder's and ss. TLC work for conversion of Nallur non grid SS to

and stringing of line between tower no 50/56 and new tower(2)structure, breaker, CT and Line VT erection work at Nallur SS towards BKB III and long lc subject to Unjanai-BKB III 110 KV # line portion (i) Jedarpalayam by SSE/Salem.(3). After completion (1)Line portion between Nallur and BKB III, Nallur and Jedarpalayam will be opened. 75 Erode 110 KV UNJANAI 230 KV possible Mon, 03-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 8 approval of se ld & Approved of TLC work on 04.04.17, the BKB III supply will be (2)Jedarpalayam SS will be fed from Pugalur-K.malai #. go chennai extended up to Jedarpalayam SS by looping the Nallur- BKB III and Nallur-Jedarpalayam line at Nallur SS at newly erected terminal tower. 4) Looping will be removed on completion of SSE works on 12.04.2017.

110 KV ARNI # II, SF6 BKr, CTs & Line Monthly maintenance work and Line maintenance During the LC period 110KV Arani II # breaker will be in hand trip condition & already 76 Erode 110 KV Singarapet 110 KV Isolator (Now radially charged from 0 Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 15:00 1 0 Approved work breaker in handtrip condition at Arani end, hence no interrption of supply Singarapet end)

GRT Annual Relay Test in Tulsian 110KV Feeder at Subject to GUMMIDIPOONDI 230 Concurance to be obtained from M/c. Tulsian consumers during the periond of shutdown 77 Chennai 110 KV 110KV SIPCOT I FEEDER BAY 110kv Sipcot IV SS end and monthly maintenance Possible Mon, 03-Apr-2017 10:00 Mon, 03-Apr-2017 17:00 1 M/c.Tulsian Approved KV ni export from 110KV Tulsian Private generation work at 230KV Gummidipoondi SS concurrence

I.No SS will be affected during the LC Period.II.Nambiyur 110 KV SS,Karattupalayam 110 subject to tsd 78 Erode 110 KV GOBI 230 KV I.110 KV Gobi - Bhavanisagar feeder entire Line maintenance and tree cutting works KV SS ,Thoppampalayam 110 KV SS and Bhavanisagar 110 KV SS has programmed possible Mon, 03-Apr-2017 10:00 Mon, 03-Apr-2017 16:00 1 Approved being realized total shut on 03.04.2017

I.NO SS WILL BE AFFECTED DURING THE LC PERIOD.II. BHAVANISAGAR 110 KV I.110 KV BHAVANISAGAR - BHAVNISAGAR LINE MAINTENANCE AND TREE CUTTING subject to tsd 79 Erode 110 KV GOBI 230 KV SS HAS PROGRAMMED TOTAL SHUTDOWN ON 03.04.2017III. SARADHA CO GEN possible Mon, 03-Apr-2017 10:00 Mon, 03-Apr-2017 16:00 1 Approved MICRO POWER HOUSE FEEDER ENTIRE WORKS being realized PLANT GENERATION NIL

110KV PATTUKKOTTAI-MADUKKUR 1) DURING THE LC PERIOD, 110KV PATTUKKOTTAI URBAN SS SUPPLY WILL BE FEEDER (VIA: 110/11KV PATTUKKOTTAI FED FROM 110KV MADUKKUR SS BY CLOSING THE 110KV LINE ISOLATOR (NO.2) NEMALITHIPIYAKUDI FOR PREMONSOON INSPECTION BY 80 Madurai 110 KV URBAN SS), LINE PORTION BETWEEN TOWARDS PATTUKKOTTAI AT 110KV MADUKKUR SS.2) NO INTERRUPTION TO POSSIBLE Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 0 Approved 230 KV AE/LINES/PATTUKKOTTAI. 110KV PATTUKKOTTAI SS TO 110KV ANY SUBSTATION. 3) 110KV PATTUKKOTTAI- MADUKKUR FEEDER BREAKER HAND PATTUKKOTTAI URBAN SS. TRIPPED AT 110KV PATTUKKOTTAI SS.

To attend the raising and over flow of oil in OLTC subject to the load Auto Transformer IV and its breaker,CT's and During LC period 1).110 KV Muthalipalayam SS will be fed from 230 KV Ingur SS and 81 Erode 230 KV PALLADAM 230 KV conservator problem in the Auto Transformer IV, the possible Mon, 03-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 5 transfers being Approved LAS 2).110 KV Palladam SS will be fed from 230 KV Arasur SS work will be attended by the manufacturer M/s.BHEL effected

1). To carry out Monthly Maintenance by 230 KV Palladam - Othakalmandapam feeder AEE/Maintenance/Palladam2). To carryout During the LC period 1)other 2Nos 230 KV feeders will be in service2). No other sub 82 Erode 230 KV PALLADAM 230 KV possible Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 0 Approved breaker,CT's and Line isolator with line entire Premonsoon inspection in the Line by station will be affected3). Other end also availing LC AEE/Lines/Palladam

230/110KV Auto Transformer,HV,LV Breakers,Isolators maintenance work,on that day Ulundurpet 110/33 KV SS Load will be fed by Villupuram Auto ss roughly about 24 MW& ko-poovanur ss load will be fed by Neyveli TS I-Deviyakurichi feeder.M/S Dharani sugars 83 Chennai 230 KV Ulundurpet 230 KV 230/110KV Auto Transformer Total shutdown monthly maintenance work. co-generation plant will be instructed to go home load. On this day it is programmed by Possible Mon, 03-Apr-2017 09:00 Mon, 03-Apr-2017 17:00 1 0 Approved GRT/Villupuram to carryout the aunnual relay test for the auto transformer and allied equipments. 110KV Thiyagadurugam ss,110KV Nagalur ss and 110KV Pillaiyarkuppam ss proposed to carried out total shutdown work.

84 Chennai 230 KV SPKoil230 KV 230 KV Kalpakkam feeder 1 Quartely Maintenance Work Possible Mon, 03-Apr-2017 09:00 Mon, 03-Apr-2017 17:00 1 0 Approved

ANUPPANKULAM 230 100 MVA AUTO TR. II & III,HV-II & III and LV- Durin the LC period the Auto Tr. I & III will cater the load of Auto Tr. II and Auto Tr. I & II sub to load 85 Madurai 230 KV For Monthly Maintenance Work. POSSIBLE Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 Approved KV II & III Breaker with CT one by one. will cater the load of Auto Tr. III. Hence No SS affected. condition

substituted for 230 OTHAKKAL MANDABAM 86 Erode 230 KV 230 KV TBC Breaker (89M & 89L Isolators) for monthly maintenance works. Already the TBC breaker under isolated condition. postponed Mon, 03-Apr-2017 9:00 Mon, 03-Apr-2017 17:00 1 kv palladam Approved 230 KV feeder breaker

87 Chennai 230 KV KORATTUR 230 KV 230 KV Korattur - Manali feeder Jumper tightness at various locations. all other feeders will be in service Postponed Tue, 04-Apr-2017 10:00 Tue, 04-Apr-2017 17:00 1 Approved

88 Chennai 230 KV KORATTUR 230 KV 230 KV Korattur - Manali feeder Jumper tightness at various locations. all other feeders will be in service Postponed Tue, 04-Apr-2017 09:00 Tue, 04-Apr-2017 17:00 1 Approved

Power Transformer-I,HV-I,LV-I and 33Kv During the LC Period there will be no supply in Power Transformer-I,HV-I,LV-I and 33Kv 89 Madurai 230 KV VEERANAM 230 KV For Quarterly and Monthly Maintenance Works POSSIBLE Tue, 04-Apr-2017 10:00 Tue, 04-Apr-2017 17:00 1 sub to wind gen Approved Feeders Micon-3,4&5 Feeders Micon-3,4&5.concurrence obtained from SE/NCES/TIRUNELVELI.

On 230/110KV Kayathar - Auto Transformer- During the LC period, Auto Transformer-I & Auto Transformer-III will cater all the loads of sub to load 90 Madurai 230 KV KAYATHAR 230 KV For monthly maintenance work POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 12:00 1 Approved II HV-II & LV-II breaker with CT only. Auto Tranformer-II Hence no SS affected condiiton

During the period of shutdown 230/110KV, 100 MVA Auto Transformer I will be in service, 91 Chennai 230 KV THIRUVERKADU 230 KV 230/110KV, 100 MVA Auto Transformer II For routine monthly maintenance work. Possible Tue, 04-Apr-2017 10:00 Tue, 04-Apr-2017 17:00 1 0 Approved hence no interruption.

230KV Amuthapuram # I Breaker with C.T EE/O/Amuthapuram has also applied LC on 230KV Amuthapuram # I breaker on the 92 Madurai 230 KV Kodikurichy230kv Monthly maintenance work. POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 0 Approved and all Isolators. same day 04.04.2017 During the LC Period 1.400KV Bus-1 in OFF condition,2.400KV Pondi Feeder breaker and 400KV NCTPS-Stg 2 breaker in trip condition, Supply will feed through Tie-1 and Tie- Sunguvarchatram 400 Posssible OCC 93 Chennai 400 KV 400KV BUS-1 ENTIRE Monthly maintenance work 2 Breakers Respectively3.Alamathi-2 feeder 2 in OFF condition,5.HV-1 Breaker and HV-3 Tue, 04-Apr-2017 09:00 Tue, 04-Apr-2017 17:00 1 0 Approved KV Appd. 129/115 Breaker in Trip condition,supply will feed through Tie-3 and Tie-4 for Auto Transformers 1&3.

CONDUCTING OF ANNUAL RELAY TEST BY subject to the 110 KV CAPACITOR BANK I BREAKER, CT DURING LC PERIOD NO SS WILL BE AFFECTED. NECESSARY CONCURRENCE 94 Erode 110 KV Erode 110 KV AEE/P&C-I /ERODE AND MONTHLY possible Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 14:00 1 voltage profile in Approved AND ITS CELLS OBTAINED FROM SE/EEDC/ERODE. MAINTENANCE WORK. the grid

Amuthapuran-Kodikurichi-1 230KV 1) During the LC period there will be NO supply in this feeder. 2) Other End also avail LC 95 Madurai 230 KV AMUTHAPURAM 230 KV Monthly Maintenance Work POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 0 Approved #,breakers,CT's and its isolators on same day. 3) Cocurrence obtained from SE/NCES/TIN.

subject to the 96 Erode 230 KV GOBI 230 KV CAPACITOR BANK I BREAKER AND CT'S FOR MONTHLY MAINTENANCE WORK CAPACITOR II IS IN SERVICE AND SUBJECT TO THE VOLTAGE CONDITION possible Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 voltage profile in Approved the grid

230KV ALKL-Alundur feeder breaker CT,Line During the L.C period the 230KV Supply will be fed from 230KV other feeder , other end 97 Madurai 230 KV ALAGARKOIL 230 KV for monthly maintenance &tree clearence wo9rk. POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 16:00 1 0 Approved CVT &Line entire. also proposed L.C, hence there will be no interruption of supply please.

110 KV THENI-SEMPATTY I # LINE LINE MONTHLY MAINTEANCE AND BATLAGUNDU AND VAIGAI SS LOADS WILL BE TRANSFERRED TO SEMPATTY II sub to load 98 Madurai 110 KV then I 230 KV SECTION BETWEEN M.PURAI SS & POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 Approved PREMONSOON INSPECTION. FEEDER. condition AYAMPALAYAM SS.(R/F THENI)

Possible with 50MVA 110/33KV POWER TRANSFOMER - 99 Chennai 230 KV KORATTUR 230 KV General Maintenance work 50MVA 110/33KV Power Transformer - I will be in service. CBD Tue, 04-Apr-2017 09:00 Tue, 04-Apr-2017 17:00 1 0 Approved II Concurrence

230 KV Singapuram # - Its CTs, BREAKER, subject to the load 100 Erode 230 KV Salem 400 KV Both end Monthly Maintenance Work Both end Monthly Maintenance Work possible Tue, 04-Apr-2017 8:00 Tue, 04-Apr-2017 14:00 1 Approved BUS & LINE SWITCHES) condition existing

110KV Arkay - Mandapam - Perungulam 101 Madurai 110 KV VALUTHUR 230 KV Tree cuttng work During the LC period 110KV Mandapam SS will be availed total shut down. POSSIBLE Tue, 04-Apr-2017 10:00 Tue, 04-Apr-2017 17:00 1 sub to total s/d Approved feeder entire.

MONTHLY MAINTENANCE WORKS AND LINE 102 Madurai 230 KV KAVANOOR 230 KV 230 KV KAVANOOR-KARAIKUDI #1 SINCE BOTH ENDS LC TO BE AVAILED NO SUPPLY IN THE FEEDER POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 0 Approved MAINTENANCE WORKS

subject to PUDHANCHANTHAI 230 110KV Namagiripet feeder CB, CTs and Line 103 Erode 110 KV For regular maintenance works. During LC period110KV Namagiripet SS availing Total Shut down.No supply interruption. possible Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 15:00 1 namagiripettai ss Approved KV Switch. availing tsd

On 1)230KV KKDI - KVNR- I #'r Breaker & During the Lc Period all other 230KV #'s tied with Grid. Hence there will be no interruption 104 Madurai 230 KV KARAIKUDI 230 KV 1) For Monthly Mtc work.2) For Tree Cutting. POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 0 Approved Ct's & 2)230KV KKDI - KVNR -I #'r Entire. of Supply.

sub to load 105 Madurai 230 KV kinnimangalam 230 KV Auto transformer 3 Monthly maintenance work Other 2 transformers will be in service and scatter the load POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 13:00 1 Approved condition

110KV Kadalangudy- Vaitheeswaran koil 1)Line inspection and rectification work No interruption to any SS. 110KV Nidur SS proposed to shutdown. All other feeders will 106 Madurai 110 KV KADALANGUDI 230 KV POSSIBLE Tue, 04-Apr-2017 10:00 Tue, 04-Apr-2017 16:00 1 sub to total s/d Approved feeder entire 2)Maintenance work be in tied condition.

1) The Feeder will be kept radial from Alagarkoil SS upto Vandiyur SS feeding Othkadai, 110KV Pasumalai - Alagarkoil -1 # BKR & 1)Maintenance Works of BKR & CT, LI 2)Tree IT Park, Industrial Estate SS 2)110/33-11 KV Anupanadi SS Loads will be transferred to sub to total s/d of 107 Madurai 110 KV PASUMALAI 230 KV CT,LI . 2. Line LC Section between POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 14:00 1 Approved Cutting works 110KV Pasumalai - Sakthisugars feeder radial feeding Villapuram SS .3) Avaniyapuram Avaniyapuram ss Pasumalai - Avaniyapuram SS. SS will be under shutdown

subject to the load 108 Erode 110 KV METTUR DPH 110 KV AUTO SS FEEDER 1 MONTHLY MAINTENANCE WORKS THE OTHER END WILL BE IN SERVICE possible Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 15:00 1 Approved condition existing

subject to the OTHAKKAL MANDABAM 110 KV OKM-Thudiyalur I Feeder (Breaker, During the LC period, 110 KV OKM-Thudiyalur I feeder loads will be transferred to 230KV feeder being kept 109 Erode 110 KV for monthly maintenance works. possible Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 14:00 1 Approved 230 KV CT's & Line switch) TDLR SS. Hence, No SS will be affected. radial from tdlr ss end

DURING THE PERIOD OF SHUTDOWN , EXCEPT 230 KV MANALI FEEDER ALL 110 Chennai 230 KV TONDIARPET 230 KV 230 KV MANALI FEEDER FOR ROUTINE MAINTENANCE WORKS Possible Tue, 04-Apr-2017 10:00 Tue, 04-Apr-2017 15:00 1 0 Approved OTHER FEEDERS AND EQUIPMENTS WILL BE IN SERVICE.

110KV SBT - RNPM III # Bkr, CTs, relays During the LC period, Thadicombu SS is availing total shutdown and V.N.Patti SS will be sub to total s/s of 111 Madurai 110 KV SEMBATTY 230 KV 1. Monthly maintenance work2. Tree cutting work POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 Approved and sec. bet. SBT and Vittalnayakanpatti SS fed by RNPM end. Hence no interruption to any SS. Thadicombu ss

The feeder to be 110 Kv Kayathar-Papanasam feeder sec b/w For Jumper tightness work & Defective disc radial from KDKRI 112 Madurai 110 KV KAYATHAR 230 KV Duting the LC Period,Rastha SS will be radially fed from Kythr SS POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 Approved rastha &ppm replacement at various location. upto Kadayam and radial from KYR upto Rastha subject to 110 KV Thalaivasal Feeder Breaker, CTs and 113 Erode 110 KV DEVIAKURICHI 230 KV For Monthly Maintenance work 110KV Thalaivasal SS availing total shutdown. possible Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 thalaivasal ss Approved Line Isolator availing tsd

1)Line inspection and rectification work No interruption to any SS. All other feeders will be in tied condition. PPN Plant is under 114 Madurai 230 KV KADALANGUDI 230 KV 230KV Kadalangudy- PPN II feeder entire 2)Maintenance work 3)Relay testing work at POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 0 Approved shutdown. Kadalangudy end. 4)Relay testing work at Plant end.

Possible with 110 KV Tondiarpet - Vyaserpadi II feeder load will be transfer to 110 KV Tondiarpet - 115 Chennai 110 KV KORATTUR 230 KV 110 KV Tondiarpet- Vysarpadi II feeder Jumper Tightness at various Location CBD Tue, 04-Apr-2017 09:00 Tue, 04-Apr-2017 17:00 1 0 Approved Vyaserpadi I feeder Concurrence 110KV SEMPATTY FEEDER BREAKER AND Subject to DURING LC PERIOD SEC BETWEEN SEMPATTY & ELAYAMUTHUR FED FROM 116 Erode 110 KV UDUMALPET 230 KV LINE SECTION BETWEEN UDT & FOR MONTHLY MAINTENANCE WORKS 0 Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 0 EE/SLDC/Madurai 230KVSS SEMPATTY ELAYAMUTHUR SS approval

App in 129 117 Madurai 400 KV kamuthi 400 KV 400KV ICT 1 MONTHLY MAINTENANCE WORK NO FEEDERS AT 230KV SIDE SO NO EQUIPMENT AFFECTED POSSIBLE Tue, 04-Apr-2017 10:00 Tue, 04-Apr-2017 17:00 1 Approved occ/113

230KV ACK-VILLUPURAM FEEDER 1.230KV KALPAKKAM FEEDER BREAKER WILL BE IN SERVICE.2.HENCE NO 118 Chennai 230 KV ACHRAPAKKAM 230 KV TO CARRYOUT MONTHLY MAINTENANCE WORK Possible Tue, 04-Apr-2017 09:00 Tue, 04-Apr-2017 16:00 1 0 Approved BREAKER & CT'S INTERUPTION OF POWER SUPPLY.

subject to the load 119 Erode 110 KV THUDIALUR 230 KV 110KV Sandinallah feeder breaker & CTs For monthly maintenance & annual relay testing Feeder will be radial from other end possible Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 15:00 1 Approved condition existing

subject to power SADAYAMPALAYAM 230 Power transformer No III HV breaker CT's & Power transformer No I,II & IV in service. Power transformer III loads will be fed from 120 Erode 230 KV Annual relay testing work by P&C Palladam. possible Tue, 04-Apr-2017 10:00 Tue, 04-Apr-2017 17:00 1 transformer 4 Approved KV Isolators Power transformer IV. loading limit

subject to the 1. 110KV KARADIBHAVI SS AND SALAIPUTHUR SS WILL BE AVAIL TOTAL feeder being kept 110 KV Ponnapuram - Maruthur # Breaker, SHUTDOWN ON 04.04.2017,2. 110KV MARUTHUE # WILL BE KEPT RADIAL FROM 121 Erode 110 KV PONNAPURAM 230 KV FOR MONTHLY MAINTENANCE WORK possible Tue, 04-Apr-2017 10:00 Tue, 04-Apr-2017 17:00 1 radial from Approved CTs & Line up to Maruthur SS 230KV PALLADAM SS / 110KV PALLADAM # UPTO MARUTHUR SSHENCE NO SS palladam ss end WILL BE AFFECTED. after tsd relief During the LC perioda). 230 KV Salem #, 230 KV Tiruvannamalai #, 230 KV Arani # Breakers will be in off condition at Singarapet end and radially charged condition from To carry maintenance work by AEE/MTC/230 KV SS respective other end. b). 230 KV MTPS, 230KV Vinnamangalam, 230 KV Thiruvalam and subject to the load 122 Erode 230 KV SINGARAPET 230 KV 230KV South Bus possible Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 Approved / SPT condition existing hand trip condition.d). 230KV GC Breaker and All Auto Transformers will be in service.e). All 110KV feeders will be in service. hence no interruption of supply

During the above period of shut down a)110KV Poovalur SS avail Total shutdown on the same day. b)110KV Thennur SS,110KV T.V.Koil SS, 110KV Valady SS,M/s.Kothari EHT sc. will be fed radially from 110KV Trichy Grid SS. C). The line Isolator towards 230KV 110KV Samayapuram - Trichy Grid feeder Thatchankurichy SS at 110KV Poovalur ss will be Kept opened and earth switch closed. 123 Madurai 110 KV SAMAYAPURAM 230 KV line portion between 230KV Thatchankurichy For premansoon EHT line inspection work. POSSIBLE Tue, 04-Apr-2017 10:00 Tue, 04-Apr-2017 17:00 1 0 Approved d)The line Isolator towards 110KV Poovalur ss at 230KV Thatchankurichy SS will be Kept SS and 110KV Poovalur SS. opened and earth switch closed. e)Necessary concurrence has been obtained from M/s.Kothari EHT Service for the interuptions during the switching operations. f)There will be no interuption to any other SS/EHT consumers.

subject to the During the Line Clear period, 110 KV Arasur- Thudialur # Radial from 230 KV Thudialur feeder being kept 124 Erode 110 KV ARASUR 230 KV For Monthly maintenance work possible Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 15:00 1 Approved and Its CTs. SS . radial from tdlr ss end

During the LC period, a) 230KV Alundur - Alagarkoil feeder both end availing Total Shut L.C. on 230KV Alundur - Alagarkoil Feeder a) Preventive Monthly Maintenance Work b) Relay 125 Madurai 230 KV ALUNDUR 230 KV down. b) All other 230 KV feeder's will be in service. c) There will be no interruption of POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 0 Approved Breaker,CT's CVT's and Line Isolators. testing Work c) Premonsoon Inspection Work. supply to any other feeders & ss.

subject to 126 Erode 110 KV UNJANAI 230 KV 1) Jumper Tightness Checking work Jeedarpalayam SS availing total shutdown. possible Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 jedarpalayam ss Approved availing tsd

subject to the 100MVA Auto Transformer-III, HV-III, LV-III 1. 2Nos. 100MVA Auto Transformer-I & II will be in service and adequate to fed Salem 127 Erode 230 KV SALEM AUTO 230 KV Monthly Maintenance work. possible Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 other auto trs Approved Breakers & their CTs load. 2. There will be no interruption to any SS or feeder. loading limit

400kv karaikudi-1 feeder Main Breaker (407- During the LC period there will be no supply in 400kv karaikudi-1 feeder Main Breaker App in 129 128 Madurai 400 KV Kayathar 400 KV 52) Reactor Breaker (407-52R),Reactor & CT Monthly Maintenance work only POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 Approved (407-52) Reactor Breaker (407-52R),Reactor & CT hence no substation affected. occ/114 only

subject to sipcot 2 tsd and the rest of 129 Erode 110 KV INGUR 230 KV MONTHLY MAINTENANCE WORKS SIPCOT - II TOTAL SHUT DOWN ON THAT DAY possible Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 14:00 1 the loads being Approved Line side Isolator fed from palladam ss

1.Total shutdown approval in 110KV Anjur,110KV Thirukalukundram,110KV Subject to Annual relay test, Tandelta test, Equipment Thiruporur,110KV Alathur, as per SE/CEDC/Chengalpattu.2.Back feeding supply to M/S concurrence of 130 Chennai 110 KV VEERAPURAM 230 KV 110 KV Thiruporur feeder Possible Tue, 04-Apr-2017 09:00 Tue, 04-Apr-2017 14:00 1 Approved Maintenance , Line maintenance Orchid chemicals may be arranged through 110KV Siruseri feeder from 230 KV S.P.Koil M/S Orchid SS. chemicals

131 Chennai 110 KV MANALI 230 KV 110kv ETPS-2 and 110kv MFL-1 feeders For repair work in 110kv Interlink switch 110kv ETPS-2 and 110kv MFL-1 feeders will not be in service Possible Tue, 04-Apr-2017 10:00 Tue, 04-Apr-2017 17:00 1 0 Approved

1. 110KV KARADIBAVI & SALAIPUTHUR SS WILL AVAIL TOTAL SHUTDOWN ON 110 KV Maruthur # section between 110KV 04.04.2017,2. 11OKV MARHTHUR # WILL BE KEPT RADIAL FROM 230KV Subject to Load 132 Erode 110 KV PONNAPURAM 230 KV For P.M.I works by lines/Pdm wing. 0 Tue, 04-Apr-2017 10:00 Tue, 04-Apr-2017 17:00 1 0 Kethanur, Kaniyur and Karadubavi SS PALLADAM/110 KV PALLADAM # UPTO 110KV MARUTHUR SS,3. HENCE NO SS condition WILL AFFECTED

1) 230KV KR Thoppur -Singapuram feeder breakers kept hand tripped at KR Thoppur 400KV SS and Singapuram 230KV SS,2) There will be no supply in 230KV KR 230KV KR THOPPUR-Singapuram feeder subject to the load 133 Erode 230 KV SALEM AUTO 230 KV Railway crossing jumpers checking. THOPPUR-Singapuram feeder entire,3) KR Thoppur 400KV SS and Singapuram 230KV possible Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 Approved entire condition existing SS are availing breaker and line switches LC on that day.4) There will be no interruption of supply to any SS. 1) During the LC period 110 KV N.T.kudi-pattukkottai-I feeder in service.2) If necessary, 110KV Pattukkottai SS will be fed from Kovilkalappal by closing 110KV line isolator No.2 110KV Pattukkottai-Karambayam-N.T.kudi-II NEMALITHIPIYAKUDI For Premonsoon inspection work by AE Lines at Madukkur SS (Kovilkalappal-Madukkur-Pattukkottai) and 110KV Madukkur feeder sub to load 134 Madurai 110 KV feeder (line portion between pattukkottai ss to POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 Approved 230 KV pattukkottai Breaker hand tripped at 230KV Nemmeli Thippiyakudi SS. 3) 110KV KARAMBAYAM SS condiiton karambayam 110kv ss) Radially fed from 230KV N T KUDI SS.4) 110KV NT KUDI-II Feeder Breaker Hand Tripped condition at 110KV Pattukkottai SS. During the LC period,1) the other end (i.e. Thanjavur 110 KV Grid SS) will avail LC on the 110 KV Thanjavur Link - 1 & 2 feeders' For monthly maintenance works by the sub to load 135 Madurai 110 KV THANJAVUR 230 KV same day, 2) all other 110 KV feeders will be in tied condition, 3) 110 KV Ayyempettai SS POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 Approved breakers, CTs & LIs(one after another) AEE/Mtce/Thanjavur. condiiton will avail shutdown on the same day,4) no supply interruption to any SS. 1)Mettla 110KV SS will be availing total shutdown on that day.2)110KV Thammampatty - 110KV Deviakurichi-Thammampatty Namagripet line series switch at thammampatty 110KV SS towards Namagripet side will Subject to Load 136 Erode 110 KV SALEM AUTO 230 KV Feeder(Section Between Thammampatty Road crossing & loc no.40-60 jumpers checking. be Kept Opened.3)110KV Deviakurichi-Thammampatty feeder will be radially fed upto 0 Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 0 condition 110KV SS - Namagripet 110KV SS) Thammampatty 110KV SS from Deviakurichi 230KV SS.4)There will be no interruption of supply to any SS. During the above period of shut down1)110KV Siruvachur SS Also availing Total shut sub to load 137 Madurai 110 KV PERAMBALUR 230 KV 110KV Siruvachur Feeder breaker CT's only For monthly maintenance work down on the Same date. 2)110KV Pudukurichy SS and MRF load will be fed from 110KV POSSIBLE Tue, 04-Apr-2017 10:00 Tue, 04-Apr-2017 14:00 1 Approved condiiton Kalakudy Grid SS.

1.110KV Pykara-Mettupalyam feeder section between Pykara and Bhavani barrage I Stringing between Pykaraa-Mettupalayam feeder HEP.2.110KV Kothagiri Spur line from and DP loc1 ii) stringing between new tower loc 5 Subject to Load 138 Erode 110 KV KARAMADAI 230 KV tapping tower to Kothagiri ss3.110KV amd loc no:6 and then to existing one x arm to Kothagiri SS under total shutdown.Hence no SS will be affected 0 Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 18:00 1 0 condition Mettuplayam-Mathampalayam feeder section Kattabettu LILO tower by AE/Lines/Kattabettu and between nellithurai switching station to Kothagiri Kattabettu

110kv TJR-LINK-I&II Feeder Br one after During the LC period there will be no interruption of supply to any ss, LC also applied by sub to load 139 Madurai 110 KV Thanjavur 110 KV For monthly maintenance work POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 Approved another EE/O&M/TJR on the same day. condiiton

During the period of L/c time,1.110 KV Mangalam SS availing total S/D,2. 110 KV 1. 110 KV Tiruvannamalai -Villupuram #, Vettavalam SS, 110 KV Rajanthangal SS, 110 KV Kilpennathur SS and 110 KV THIRUVANNAMALAI 230 Breaker, CT's and Line Isolator2. 110 KV Thandarai traction Feeders will be radially fed from 110 KV Villupuram Grid SS ( Radial 140 Chennai 230 KV Monthly maintenance work Possible Tue, 04-Apr-2017 09:00 Tue, 04-Apr-2017 15:00 1 To be discuss Approved KV Tiruvannamalai - Kanji #, Breaker, CT's and upto 110 KV Kil pennathur SS)3. 110 KV Kanji SS availing total S/D,4. 110 KV Solar Line Isolator Generation and 110 KV Adamangalam SS will be fed from 230 KV Arni Substation, Hence there is no interruption of supply please.

110kV PYKARA - BHAVANI BARRIAGE 1 # FOR GRT ANNUAL RELAY TESTING AND Subject to Load 141 Erode 110 KV PYKARA NIL 0 Tue, 04-Apr-2017 8:00 Tue, 04-Apr-2017 17:00 1 0 (BREAKER AND CT) MONTHLY MAINTENANCE WORK. condition

110KV Thudialur -Sandinallah feeder Section During LC period Kothagiri SS,Jagathala SS and Kattabettu SS will be under Total Subject to Load 142 Erode 110 KV KARAMADAI 230 KV between 110KV /22KV maruthur SS and 1.To open jumper at S2 switch at Jagathala SS 0 Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 12:00 1 0 shutdown . MAruthur SS will be fed from Thudialur end . condition Sandinallah SS .

110KV Thudialur -Sandinallah feeder Section 1.To open jumper at S2 switch at Jagathala SS and During LC period Kothagiri SS and Kattabettu SS will be under Total shutdown . MAruthur Subject to Load 143 Erode 110 KV KARAMADAI 230 KV between 110KV /22KV maruthur SS and 0 Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 0 PMI work by AEE/lines /Kothagiri SS will be fed from Thudialur end . condition Sandinallah SS .

For provision of Repair sleeve in between location 51 144 Chennai 110 KV THIRUVALAM 230 KV KV Sholinghur SS to 110 KV A.J. Pet SS. Hence there will be no interruption of supply Possible Tue, 04-Apr-2017 09:00 Tue, 04-Apr-2017 14:00 1 0 Approved charged line) entire. -52.. please.

ANUPPANKULAM 230 110 KV APKM - Thulukkapatti-II feeder Br., During the LC period the 110 KV Thulukkapatti I feeder will cater the load of 110 KV Sub to load 145 Madurai 110 KV For Monthly Maintenance Work. POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 14:00 1 Approved KV CT., and Line entire. Thulukkapatti II feeder. Hence no SS will be affected. condition Radial from other end,1.110KV Uraiyur SS availing total shut down.2.Load can be 146 Chennai 110 KV Vilathikulam 110 KV Breaker & CT maintenance works Possible Tue, 04-Apr-2017 09:00 Tue, 04-Apr-2017 17:00 1 0 Approved LINK # manageable through Neyveli-I #.3.Railway traction load will be maintained in Neyveli-I #. All 11KV & 33KV feeder breakers to be hand tripped, 11KV LV will be hand tripped afetr Momnthly Maintenance work in 110KV GC I & II, availing station supply from feeder fed from 11oKV Krishnagiri SS, 33KV LV will be hand GURUPARAPALLI 230 110/33KV Power transformer I, 110/11KV POwer Subject to Load 147 Erode 110 KV 110KV GC Breaker in 110/33 KV SS tripped. 110KV GC I & GC II will be hand tripped. Concurrence obtained from 0 Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 14:00 1 0 KV TRansformer II, 11KV LV, 33KV LV, 33KV & 11KV condition SE/O/Thiruvalam & SE/KEDC/Krishnagiri. Total shut down proposed at 110KV SS as per feeder breakers approval received from CE/D/Vellore Approved Subject to 230KV K.R.Thoppur 148 Erode 230 KV SINGAPURAM 230 KV Monthly Maintenance 1.Monthly Maintenance @ both ends 0 Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 0 EE/SLDC/Erode Feeder(Breaker,CT&Isolator) approval Subject to SE/O 149 Chennai 230 KV ACHRAPAKKAM 230 KV 16 MVA PR.TR.III FOR MONTHLY MAINTENANCE WORK 1.16 MVA PR.TR.I&II Will be inservice cater the entire 11kv Loads Pending Tue, 04-Apr-2017 09:00 Tue, 04-Apr-2017 12:00 1 0 concurrence

1)The Feeder will be kept radial from Alagarkoil SS upto Vandiyur SS feeding Othkadai, 1)110KV Pasumalai - Alagarkoil -1 # BKR & 1)Maintenance Works of BKR & CT, LI 2)Tree IT Park, Industrial Estate SS 2)110/33-11 KV Anupanadi SS Loads will be transferred to LC already applied 150 Madurai 110 KV PASUMALAI 230 KV CT,LI . 2. Line LC Section between POSSIBLE Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 14:00 1 Approved Cutting works 110KV Pasumalai - Sakthisugars feeder radial feeding Villapuram SS 3)Avaniyapuram on 4.4.17 Pasumalai - Avaniyapuram SS. SS will be under shutdown

LC may be availed During LC period, i)110 KV Tenkasi SS 110Kv shenkottai SS 110KV Keelapavoor SS and 110KV Kodikurichi -Tenkasi - Papanasam For replacement of defective insulator at loc no: 24 on 4.4.17.Since 110KV kadayam SS will be redially fed from 110 KV kodikurichi SS. ii)110 KV Rastha SS Approved Subject to 151 Madurai 110 KV KODIKURICHY 230 KV feeder section between 110 KV Kadayam SS - (kadayam spur line) and restinging of earth wire at 0 Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 17:00 1 EE/O/ KYR will be fed from 110 KV Kayathar-papanasam Feeder by closing of bus coupler switch at load condition papanasam-rastha SS location 83-84 Main line programmed on rastha SS end. iii).Hence no SS will be affected. 4.4.17 During the L.C period the 230KV SUPPLY WILL BE FED FROM230KV other feeder, other 230KV ALKL-ALUNDUR # Vbreaker CT,LINE PRPONED TO Approved Subject to 152 Madurai 230 KV Alagarkoil230kv for monthly maintenace wor & tree clearence work end also proposed L.C on the same date, hence there will be no interruption of supply 0 Tue, 04-Apr-2017 9:00 Tue, 04-Apr-2017 16:00 1 CVT & Line entire. 4.4.17 load condition please. GCC/Trichy wing work for KfW fund Augmentation Approved Subject to 230 KV Bus coupler bay and 230KV Bus Bay of Replace the Existing Twin Kunda strung bus by During the period of LC the 230 KV BUS A will be in service Hence no interruption of 153 Chennai 230 KV CUDDALORE 230 KV Pending Wed, 05-Apr-2017 09:00 Fri, 14-Apr-2017 17:00 3 0 normalisation of strung bus Twin MOOSE.LC Period from 01.04.2017 to supply.Concurrence obtained from SE/O/Villupuram. Auto Trf.2 09.04.2017 (9days) 230KV KPH4 Feeder to Thudiyalur Feeder Tower 154 Erode 230 KV KUNDAH PH3 230KV KPH4 Feeder to Thudiyalur Feeder No:01 to 12 Pre-Monsoon Inspection work(PMI) and Bus and Line both end open condition Earth switch closed condition. 0 Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 0 Approved Maintenance work.

230KV KPH4 Feeder to Thudiyalur Feeder Tower 155 Erode 230 KV KUNDAH PH3 230KV KPH4 Feeder to Thudiyalur Feeder No13 to 24 Pre-Monsoon Inspection work(PMI) and Bus and Line both end open condition Earth switch closed condition. 0 Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 0 Approved Maintenance work.

230Kv Veeranam - Kayathar Feeder Br,CT During the LC period there will be no supply on the entire Feeder.Concurrence obtained 156 Madurai 230 KV VEERANAM 230 KV For Monthly Maintenance work POSSIBLE Wed, 05-Apr-2017 10:00 Wed, 05-Apr-2017 17:00 1 0 Approved with line switch from SE/ NCES/TIRUNELVELI.

On 230KV Kayathar - Veeranam feeder a) For monthly maintenance work & SF6 gas filling 157 Madurai 230 KV KAYATHAR 230 KV During the LC period, other end also availing the LC. Hence no SS affected. POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 0 Approved breaker with CT & entire line work. b) Tower to Tower Inspection Work

subject to load condition existing 158 Erode 230 KV MTPS MTPS-I to Ingur Feeder Monthly maintenance Programmed LC possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 Approved as no tsd relief scheduled 230KV Amuthapuram # II Breaker with C.T EE/O/Amuthapuram Has also appiled L.C on 230KV Amuthapuram # II on same day (05- 159 Madurai 230 KV KODIKURICHY 230 KV Monthly maintenance work POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 0 Approved and all Isolators one by one. 04-2017) .

230KV MTPS II feeder Breaker,CTs and Line 160 Erode 230 KV THINGALUR 230 KV Monthly Maintenance Works The Feeder is already in radial condition possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 radial feeder Approved Isolators

Sunguvarchatram 400 During the LC Period 315MVA 400/230KV Auto Transformer-1 in OFF Condition and Auto Possible, OCC 161 Chennai 400 KV 315 MVA,400/230KV,Auto Transformer-1 Monthly maintenance work Wed, 05-Apr-2017 09:00 Wed, 05-Apr-2017 17:00 1 0 Approved KV Transformer 2 will cater the load of Auto Transformer -1. Appd. 129/120

GENERATI ANNUAL RELAY TESTING WORK BY GRT WING subject to the grid 162 Erode NG KUNDAH PH5 UNIT NO: 01 DURING THE LC PERIOD THE UNIT NO:01 WILL BE UNDER NOT S/B CONDITION.. possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 Approved KUNDAH condition STATIONS

Possible with 110KV AVADI-1 & 110KV AVADI-2(ONE BY DURING THE ABOVE SHUTDOWN PERIOD 110KV AVADI-1 & 110KV AVADI-2(ONE 163 Chennai 110 KV Alamathy 400 KV ANNUAL RELAY TESTING BY GRT WING. CBD Wed, 05-Apr-2017 10:00 Wed, 05-Apr-2017 17:00 1 0 Approved ONE) BY ONE) WILL NOT BE IN SERVICE. Concurrence

110 KV ERODE - INGUR III FEEDER DURING LC PERIOD NO SS WILL BE AFFECTED. NECESSARY CONCURRENCE subject to the load 164 Erode 110 KV Erode 110 KV MONTHLY MAINTENANCE WORK possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 13:00 1 Approved BREAKER AND CT OBTAINED FROM SE/EEDC/ERODE. condition existing

1) The Feeder will be kept radial from Alagarkoil SS upto Vandiyur SS feeding Othkadai, 1).110 KV Pasumalai - Alagarkoil-II # BKR & 1)Maintenance Works of BKR & CT, LI only2)Tree IT Park, Industrial Estate SS 2)110/33-11 KV Anupanadi SS Loads will be transferred to feeder 2 condition 165 Madurai 110 KV PASUMALAI 230 KV CT, LI only. 2)Line LC in Section between 0 Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 14:00 1 Approved Cutting works 110KV Pasumalai - Sakthisugars feeder radial feeding Villapuram SS 3)Avaniyapuram not mentioned. Pasumalai - Anaiyur SS. SS will be under shutdown (i) 230KVAmuthapuram II feeder Breaker,CT (i) For monthly maintenace work (ii) For replacement During the LC period, (i) 230 KV Amuthapuram SS also availing monthly maintenace 166 Madurai 230 KV KODIKURICHY 230 KV & Isolator. (ii) 230KV Amuthapuram II feeder of defective Insulator at Location No :45 (R & Y work (ii) 230KV Isolator towards Amuthapuram will be kept opened atKodikurichi SS, POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 0 Approved entire Line. phase) 230KV Isolator towards Kodikurichi will be kept opened at Amuthapuram SS

1)Both end Breakers to be tripped2)Both end Bus & Line switches to be opened3)Both 167 Madurai 230 KV TTPS 1)230KV TTPS-CKNI FEEDER For Maintenance work POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 0 Approved End earth switches to be closed condition

Amuthapuran-kodikurichi-2 230KV 1) During the LC period there will be NO supply in this feeder. 2) Other End also avail LC 168 Madurai 230 KV AMUTHAPURAM 230 KV Monthly maintenance work POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 0 Approved #,breakers,CT's and its isolators on same day. 3) Cocurrence obtained from SE/NCES/TIN.

During the LC period, there will be no supply in 230 KV Pugalur - Paramathy I feeder. 230 KV Pugalur - Paramathy I feeder App in 129 169 Madurai 230 KV PUGALUR 230 KV 1. Monthly maintenance work 2) Tree cutting work Necessary Concurrence obtained from PGCIL Paramathy. Hence There is no interruption POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 Approved Breaker, CT & line switch and line entire only occ/111 to any SS,LC approved in 129 th OCC meeting

subject to the 1.CAPACITOR BANK NO :II BREAKER, CT'S DURING THE L.C PERIOD CAPACITOR BANK NO :I WILL CATER THE STATION WAR 170 Erode 230 KV UNJANAI 230 KV FOR MONTHLY MAINTENANCE WORK possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 15:00 1 voltage profile in Approved AND BANKSIDE ISOLATOR ONLY LOADS the grid

110 KV THENI KINNIMANGALAM I & II # 171 Madurai 110 KV then I 230 KV MONTHLY MAINTENANCE WORK. MONTHLY MAINTENANCE WORK (R/F KINNIMANGALAM). POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 0 Approved BREAKER WITH CT ONE BY ONE . CHECKANURANI SW For Monthly maintenance works and Line 172 Madurai 230 KV 230KV CKNI-TTPS Feeder Entire During the LC period, there will be no supply in the Entire feeder POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 0 Approved STATION 230 KV Maintenance works 110 KV KARAIKUDI-VALUTHUR # SEC. sub to total s/d FEEDER TO BE KEPT RADIAL FROM KARAIKUDI UPTO R.S.MANGALAM. Approved Subject to 173 Madurai 110 KV KAVANOOR 230 KV BET. VALUTHUR & R.S.MANGALAM LINE MAINTENANCE WORKS POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 and karaikudi auto SALAIGRAMAM TO BE AVAILED SHUTDOWN; L.R. 1.2 MW load condition (INCLUDING SALAIGRAMAM SPUR LINE loading During LC period110KV Erumapatty SS availing Total Shut dodwn.110KV Valayapatty subject to the load PUDHANCHANTHAI 230 110KV Valayapatty feeder CB, CTs and Line To attend meagre oil leak from P2 Terminal of R & Y 174 Erode 110 KV and SENdamangalam SS will be back fed from 110KV PSI-Namakkal feeder.No supply possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 transfers being Approved KV Switch. Phase CTs and attend regular maintenance works. interruption. effected

No interruption to any SS. 110KV Aduthurai SS proposed to shutdown. 110KV KGTPS- Palaiyur feeder will be in radial condition up to Palaiyur SS. The 110KV Thirupanandal, 175 Madurai 110 KV KADALANGUDI 230 KV 110KV Palaiyur- Aduthurai feeder entire Line inspection and rectification work POSSIBLE Wed, 05-Apr-2017 10:00 Wed, 05-Apr-2017 16:00 1 0 Approved Thirupurambium and Jayankondam SS supply fed from 110KV Kadalangudy- Aduthurai- Neyveli TS I feeder.

RENGANATHAPURAM 110kv RNPM-SBT I # section between during LC period 110kv RNPM-SBT I # radially fed from RNPM upto Reddiyarchatram SS 176 Madurai 110 KV Tree cutting work POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 14:00 1 0 Approved 230 KV Reddiyarchatram SS and Kannivadi SS and radially fed from SBT upto Kannivadi SS

During the LC period, a) other end also availing LC on the same feeder. b) All other 1. 230 KV TRICHY - ALUNDUR I Feeder sub to load 177 Madurai 230 KV TRICHY 230 KV 0 230KV feeders will be in tied condition. c) Hence there will be no interruption of supply to POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 Approved breaker,CTs, Line isolator and line entire. condition any of the feeder and SS.

Line premansoon Inspection and Rectification work, During the LC period all other 230KV Feeders are in tied condition. Hence there will be no 178 Madurai 230 KV THIRUVARUR 230 KV 230KV Thiruvarur - PPN Feeder Breaker, CT's & Isolator maintenance work and PPN POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 0 Approved interruption of supply to any other Substations. Plant side Relay Testing work.

OTHAKKAL MANDABAM 230KV OKM-Anikadavu Feeder Entire subject to the load 179 Erode 230 KV for monthly maintenance works. During the LC period, the other 230 KV feeders are in service to cater the SS loads. possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 Approved 230 KV (Breaker, CT's, 89M1, 89M2 & 89L Isolators) condition existing

230/110KV Auto I, HV i and LV I, bkr, CTs sub to load 180 Madurai 230 KV SEMBATTY 230 KV Monthly maintenance work During the LC period Auto II and III will be in service. POSSIBLE Wed, 05-Apr-2017 10:00 Wed, 05-Apr-2017 17:00 1 Approved and relays condition

110kv SBT - RNPM I # Bkr, CTs and sec. bet. During the LC period, Kannivadi SS availing total shutdown and the feeder will be radial 181 Madurai 110 KV SEMBATTY 230 KV 1. Monthly maintenance work2. Tree cutting work POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 0 Approved SBT and Reddiyarchatram SS from other end upto Reddiyarchatram SS. Hence no interruption to any SS.

During the above LC period 230KV MTPH-MTPS Feeder will be in service and machine 96 mw support to Subject to 230KV MTPH-AUTO SS Fedder SF6 182 Erode 230 KV METTUR TPH For Monthly maintenance works 1,2,3 &4 will be in common spell AOH works and machine 4 in Individual spell AOH work postponed Wed, 05-Apr-2017 7:00 Wed, 05-Apr-2017 17:00 1 mettur auto ss EE/SLDC/Erode Breaker,CTs and Isolators and PWD Demand meet out by Dam power house units. would be cut approval subject to the 110 KV Capacitor bank II Breaker CTs, 183 Erode 110 KV DEVIAKURICHI 230 KV For Monthly Maintenance work Capacitor Bank I will be in service possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 voltage profile in Approved Capacitor side Isolator, LAS the grid

During the period of LC the 230KV Bhavini - I & Bhavini - II Feeder loads (Sirucheri SS 230KV Arani Echur Feeder Breaker,230KV For 230KV Breaker, Line Isolator and CT monthly Loads 70MW ) will be transferred to 230KV Singarapet SS by Split bus arrangements in Possible with Approved with Split 184 Chennai 230 KV ARNI 230 KV Wed, 05-Apr-2017 09:00 Wed, 05-Apr-2017 14:00 1 0 CTs and 230KV Line Isolatores maintenance work. 230KV Arani SS.Also 110KV Polur SS loads and Vandavasi SS loads will be transferred Split Bus bus arrangement to 230KV Thiruvannamalai SS and 230KV Achcharapakkam SS respectively.

1)Line inspection and rectification work 2)Relay No interruption to any SS. All other feeders will be in tied condition. Plant is under 185 Madurai 230 KV KADALANGUDI 230 KV 230KV PPN- Thiruvarur feeder entire POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 0 Approved testing work at Plant end. shutdown.

subject to the 110 KV UDUMALPET LINK III FEEDER DURING LC PERIOD THE ABOVE FEEDER LOADS WILL BE CATER IN 110KV UDT I & other two link 186 Erode 110 KV UDUMALPET 230 KV FOR MONTHLY MAINTENANCE WORKS possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 Approved BREAKER AND LINE ENTIRE II FEEDERS feeders loading limit 230KV UDT-ALIYAR FEEDER BREAKER THE ABOVE FEEDER LOADS WILL BE FED FROM 230KV MYVADI LINK I & II subject to the load 187 Erode 230 KV UDUMALPET 230 KV FOR MONTHLY MAINTENANCE WORKS possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 Approved AND LINE ENTIRE FEEDERS condition existing

Possible, OCC 188 Chennai 400 KV Sriperumbudur 400 KV 400KV BUS-II Entire Half yearly maintenance work During the period of shut down 400kv Bus-I will be in service Wed, 05-Apr-2017 09:00 Wed, 05-Apr-2017 17:00 1 0 Approved Appd. 129/121

subject to the load condition existing 189 Erode 230 KV METTUR AUTO 230 KV 230 kv MTPS 1 -Ingur feeder entire Jumbercone tightness checking at MTPS 1 Ingur bay Programmed LC at MTPS -1 on 05.04.2017 possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 14:00 1 Approved as no tsd has been scheduled subject to the 190 Erode 230 KV THUDIALUR 230 KV 100MVA Auto transformer-II, HV-II & LV-II For monthly maintenance works Auto Transformer I & III will be in service possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 other auto trs Approved loading limit subject to the During LC period there is no SS will be affected since there is inter connected SS fed from other two link 191 Erode 110 KV Udumalpet 110 KV Monthly Maintenance work possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 Approved Entire line other end. feeders loading limit During the period of LC, 1) Auto transformer III and LV III breaker will be in off condition. 2) The Auto transformer I and II will be in service.3) All the 110 KV feeders will be in subject to the To carry monthly maintenance work by 192 Erode 230 KV SINGARAPET 230 KV Auto transformer III & LV III Breaker service. Except 110KV SSREL # which will be radially charged condition from possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 15:00 1 other auto trs Approved AEE/MTC/230 KV SS / SPT Karimangalam 230KVSS.4) 110 KV Ramiyanahalli SS and Pappireddipatty SS loads will loading limit be fed from Karimangalam SS if necessary and hence no interruption of supply.

110 KV Arasur - Karamadai I feeder( section During the Line Clear period, 1) 110 KV MGC palayam SS and 11o KV Kaduvettipalayam subject to the 193 Erode 110 KV ARASUR 230 KV between 110 KV Kaduvettipalayam SS and For PMI works. SS will be fed from 230 KV Arasur SS 2) 110 KV Ellapalayam SS will be fed from 230 KV possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 Approved division of loads 110 KV Ellapalayam SS ) Karamadai SS

During the Line Clear period, 1) 110 KV Kalapatty SS,110 KV Sulur SS and 110 KV subject to the 230/110 KV Autotransformer - I, HV-I, LV-I, 194 Erode 230 KV ARASUR 230 KV For Monthly maintenance work. ) Neelambur SS under Total Shut down.2)remaining loads will be managed by 3 Nos Auto possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 16:00 1 other auto trs Approved Transformers.3) 110KV Thudialur # will be radial from 230 KV Thudialur SS if necessary. loading limit

To be discuss - Approved (Daily 195 Chennai 230 KV Lines/Athipet 230KV Tondiarpet - NCTPS Stage-I 2 Jumper tightness. Tower to Tower inspection. All other feeder in service. Wed, 05-Apr-2017 08:00 Thu, 06-Apr-2017 18:00 1 0 2days basis0

a) Preventive Monthly maintenance work. 230KV Alundur -Trichy I feeder breaker, During the LC period, a) Other end also avail shutdown. b) All other 230 KV feeders will sub to load 196 Madurai 230 KV ALUNDUR 230 KV b)premonsoon inspection and tree cutting work. C) POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 Approved CT'S, CVT'S and line isolators. be in service. c) There will be no interruption of supply to any other feeders. condition Relay Testing Work.

subject to the load MONTHLY MAINTENANCE WORKS AND ALSO condition existing 197 Erode 230 KV INGUR 230 KV Line side Isolator and 230 KV main Bus & OTHER END ALSO AVAIL LC ON THAT DAY possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 14:00 1 Approved NEW LAS ERECTION WORK as no tsd has Auxillary Bus switch been scheduled

For providing Wave drop jumper in Sipcot II feeder, Subject to GRT Annual Relay test in Hi- Tech 110KV feeder Concurance to be obtained from M/s. OPG and M/s. Hi-Tech and EHT consumer during concurrence from GUMMIDIPOONDI 230 198 Chennai 110 KV 110KV Sipcot II feeder bay Sipcot II -Gummidipoondi link feeder at 110KV the period of shutdown no export from 110KV OPG and Hi- Tech private generation and Possible Wed, 05-Apr-2017 10:00 Wed, 05-Apr-2017 17:00 1 M/s. OPG and Approved KV Sipcot II SS end and 110KV Panjetty feeder monthly 110KV panjetty SS load may be transfered to 230KV Manali SS M/s. Hi-Tech and maintenance work at 230KV Gummidipoondi SS EHT consumer

on 110KV Shasayee Paper Mill # For Annual Relay Test Conduct by 110 KV EHT consumer Shasayee Paper Mill availing shutdown . Concurrance obtained 199 Madurai 110 KV KODIKURICHY 230 KV POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 0 Approved (O.Thulukkapatti SS) AEE/GRT/Thalaiyuthu from the consumer by AEE/MAINTENANCE/O.T.PATTI.Hence No SS will be affected.

1.400/230KV ,315 MVA ICT1, HV and LV breakers and its CTs.2.110KV Karamadai- 1.During LC period ICT II& III will be inservice 2. During LC period No SS will be affected, occ approved and 200 Erode 230 KV KARAMADAI 230 KV Arasur I feeder section between 110KV 1.For maintenance works.2.AE/Lines /Arasur for PMI as Ellapalayam SS will be fed from Karamadai SS and MGC Palayam and possible Wed, 05-Apr-2017 10:00 Wed, 05-Apr-2017 17:00 1 subject to the load Approved Kaduvettipalayam SS and 110Kv Kaduvettipalayam will be fed from Arasur 230KV SS condition Ellapalayam SS

96 mw support to Subject to 201 Erode 230 KV METTUR AUTO 230 KV 230kv MTPH FEEDER ENTIRE MONTHLY MAINTENANCE WORK DURING THE LC PERIOD OTHER 230KV FEEDERS WILL BE INSERVICE postponed Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 mettur auto ss EE/SLDC/Erode would be cut approval 110KV N T KUDI-MADUKKUR- 1) DURING THE LC PERIOD, 110KV MADUKKUR SS RADIALLY FED FROM 230KV NT NEMALITHIPIYAKUDI THIRUMAKKOTTAI-KOVILKALAPPAL FOR PREMONSOON INSPECTION WORK BY sub to load 202 Madurai 110 KV KUDI SS AND 110KV THIRUMAKKOTTAI SS RADIALLY FED FROM KOVILKALAPPAL. POSSIBLE Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 Approved 230 KV FEEDER (LP: 110KV MADUKKUR SS TO AE/LINES/PATTUKKOTTAI condition 2) NO INTERRUPTION TO ANY OTHER SS. 110KV THIRUMAKKOTTAI SS)

230KV KPH2-KPH3 FEEDER SF6 BREAKER 203 Erode 230 KV KUNDAH PH2 FOR MONTHLY MAINTENANCE WORK SF6 BREAKER OFF IN CONDITION TOP AND BOTTOM BUS OPEN IN CONDITION Possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 0 Approved AND ITS ACCESSIORIES

230 KV Echur - Arni & Kalpakkam #-at time of LC in 230 KV kalpakkam #, Kalpakam # breaker will be HT, Echur -Arni# breaker HT and Load transferred to other end SS no 204 Chennai 230 KV ECHUR 230 KV 230 KV Echur - Arni # Monthly Maintenance Work supply to Arni#, Then 110 KV mazhaiyur SS Load transferred to 230 KV Villupuram SS Pending Wed, 05-Apr-2017 09:00 Fri, 07-Apr-2017 17:00 3 0 Approved and 110 KV Vandavasi SS Load transferred to 230 KV Acharapakkam SS. Maintenance work carry over Echur - Arni & Kalpakkam # During the above line clear period there will be no supply to 110 KV Min Nagar SS , 110 1.230/110 KV Auto Transformer I 2. 230/110 KV Nariganapuram SS , 110 KV Bagalur SS , 110 KV Zuzuvadi SS , 110 KV Hosur SS KV Auto Transformer II3. 230KV Shoolagiri 1. For Monthly Maintenance Work. 2. For attending and M/s. TVS Motor Company Ltd, the above ss are availing Mtce shutdown on the same subject to the tsd Feeder Breaker&entire line.4. 110 KV Bagalur glow in Zuzuvadi feeder.3.For replacement of static 205 Erode 230 KV HOSUR 230 KV day. The 230KV Hosur ss loads will be catered through 230KV Mettur feeder and the possible Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 14:00 1 relief being Approved feeder Breaker&entire line.5. 110 KV relay of 230KV Shoolagiri feeder. 4.For replacement loads wiil maintained with in to Auto Transformer capacity.The concurrence of realized Zuzuvadi feeder Breaker&entire line.6. 110/33- of defective master trip relay to 110/11 KV GC. Superintending Engineer / KEDC / Krishnagiri , Superintending Engineer/ Operation / 11 KV GC Hosur Thiruvalam and Chief Engineer / Distribution / Vellore has been obtained.

During the above LC period there will be no supply to 110KV Minnagar SS,110KV 110KV Hosur-Bagalur feeder & 110KV Hosur - Nariganapuram SS,110KV Bagalur SS,110KV Zuzuvadi SS and M/S TVS Motor company Approved Subject to 206 Erode 230 KV HOSUR 230 KV Zuzuvadi feeder& 230KV Hosur-Shollagiri 1)Monthly Line maintenance work LTD,The above SS are availing Monthhly Shutdown on the same day.The 230KV Hosur 0 Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 14:00 1 0 EE/SLDC/Erode feeder SS Load will be catered through 230KV Mettur feeder.The concurrence of approval CE/D/Vellore,SE/O/TVlm and SE/KEDC has been obtained.

Durind the period of LC The 110 KV srimushnam and 110 KV Umangalam SS will be For painting of DP structures and checking of jumper availing total shutdown.110 KV Papakudi SS load Already fed from 230 KV SS 207 Chennai 230 KV CUDDALORE 230 KV 110 Kv - Neyveli-Aduthurai feeder Possible Wed, 05-Apr-2017 09:00 Wed, 05-Apr-2017 17:00 1 0 Approved kadalangudi.Hence NO Interruption of SupplyConcurrence obtained from SE/O/Villupuram GENERATI 208 Erode NG PYKARA UNIT 2 FOR MONTHLY MAINTENANCE WORK NIL 0 Wed, 05-Apr-2017 8:00 Wed, 05-Apr-2017 17:00 1 0 Approved STATIONS 230KV ALR-UDT FEEDER CB,CT&LINE Approved Subject to 209 Erode 230 KV ALIYAR 230 KV Quarterly mtce work During the LC period 230kv kdh feeder will caters the load 0 Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 16:00 1 0 ENTIRE grid condition

110 KV Villupuram-Madurapakkam-II # For maintenance works and jumpers tightening works in Vikravandi LILO.VKD, MPKM, 210 Chennai 110 KV VILLUPURAM 230 KV For monthly maintenance works Possible Wed, 05-Apr-2017 09:00 Wed, 05-Apr-2017 17:00 1 0 Approved (Breaker, CTs ). Vanur & TCBLM SS availing total shutdown.

ANUPPANKULAM 230 110KV APKM - NSPM feeder Breaker CT and During the LC period, the other end also availing LC on the same date. Hence no ss will 211 Madurai 110 KV For Monthly Maintenance Work. 0 Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 13:00 1 0 Approved KV line Switch only. be affected.

During the LC period, A)110KV NSPM-APKM feeder breaker will be kept in tripped A) New Breaker wiring and testing & commissioning condition. B)&C) 110KV NSPM-APKM feeder entire line under total shut down condition A) 110KV NSPM-APKM # Breaker. B) 110KV works.B) Swapping of 110 KV NSPM - APKM line NSPM BUS LC ANUPPANKULAM 230 and N.Subbiahpuram-Kayathar feeder will be radialy fed from other end upto Viyajapuri 212 Madurai 110 KV NSPM-APKM # Line Entire. C) 110KV Bus from existing bay to new bay. C) 110 KV Bus 0 Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 2 ONE DAY & S/D Approved KV 110KV SS.110KV ETA feeder will be tripped condition since the EHT SC feeder was Entire at NSPM SS. extension & Dropper providing works & Monthly ONE DAY under DC from 23.03.2016.Hence No SS affected.Concurrence obtained from maintenance works. SE/VREDC/VDR.

Radial from other end,1.Arasur Ss in Neyveli-II #availing total shut down.2.Load can be Subject to load 213 Chennai 110 KV Vilathikulam 110 KV 110KV VPM- Neyveli- I # Breaker & CT maintenance works manageable through Neyveli-II #.3.Railway traction load will be transferred to Neyveli-II Possible Wed, 05-Apr-2017 09:00 Wed, 05-Apr-2017 17:00 1 Approved condition #& jumper Tightening works in the Traction Line.

BASIN Auto Transformer 3 will not be inservice, Auto Transformer 1 & 2, all 230 KV & 110 KV #s 214 Chennai 230 KV BRIDGE(GMRVASAVI) Auto Transformer 3 OLTC oil changing work & routine maintenane work Possible Wed, 05-Apr-2017 09:00 Wed, 05-Apr-2017 17:00 1 0 Approved will be inservice . 230 KV 230KV KPH4 Feeder to Thudiyalur Feeder Tower 215 Erode 230 KV KUNDAH PH3 230KV KPH4 Feeder to Thudiyalur Feeder No:25 to 36 Pre-Monsoon Inspection work(PMI) and Bus and Line both end open condition Earth switch closed condition. 0 Wed, 05-Apr-2017 9:00 Wed, 05-Apr-2017 17:00 1 0 Approved Maintenance work. During the above shutdown period 100MVA Auto transformer III and 80MVA Auto 216 Chennai 230 KV KITS 230 KV 100MVA Auto transformer-I For monthly maintenance work transformer-II will be in service except 110KV Veerapuram # which will be in back Possible Wed, 05-Apr-2017 10:00 Wed, 05-Apr-2017 17:00 1 0 Approved charged condition

217 Chennai 110 KV THARAMANI 230 KV 110 KV Perungudy-2 feeder Quarterly Mtce. work 110 KV Perungudy -1 # will be in service Possible Wed, 05-Apr-2017 00:00 Wed, 05-Apr-2017 00:00 1 0 Approved

110 KV ALANGUDY SS, 110 KV NAGUDY SS, 110 KV KODIKKULAM SS IN 110 KV AUTO I, HV I, LV I AND 110 KV ALANGUDY ALANGUDY EID PARRY FEEDER AVAILING TOTAL SHUT DOWN AND 110 KV EID PARRY FEEDER LINE PORTION AUTO I BREAKER, CT ISOLATORS AND EHT LINE SUPPLY FOR 110 KV ALIYANILAI SS AND EID PARRY CO GENERATION IS TO BE BETWEEN 230 KV SS AND EID PARRY POSTPONED TO Approved subject to 218 Madurai 230 KV PUDUKOTTAI 230 KV MAINTENANCE WORKS AND GRT TESTING BACK FED THROUGH 110 KV SIPCOT FEEDER. 110 KV PUDUKKOTTAI SS IN 110 KV 0 Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 AND 110 KV ADHANAKKOTTAI FEEDER 06.04.17 load condition WORKS SIPCOT FEEDER AND 110 KV VADAKADU SS IN 110 KV ADHANAKKOTTAI FEEDER LINE PORTION BETWEEN 110 KV ALSO AVAILING TOTAL SHUT DOWN AND HENCE THERE WILL BE NO MALAIYUR SS TO 110 KV VADAKADU SS INTERUPTION OF SUPPLY TO ANY SS 1)Auto Transformer -1 will be in Service. 2)110KV Pasumalai - Sembatty feeder will be 100 MVA AUTO - II, HVB - II, LVB - II, CT 1)Monthly Maintenance Works 2)Attending to Oil kept radial from Sembatty end.3)110/33-11KV Arasaradi SS and 110KV Pasumalai SS POSTPONED TO Approved subject to 219 Madurai 230 KV PASUMALAI 230 KV 0 Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 14:00 1 only. leak in the Auto. will be under Shutdown Relief - 62 MW. 4)110KV Pasumalai - Alagarkoil -2 Feeder will be 06.04.17 load condition kept radial from other end.

HV & LV SIDE - ITS ENTIRE During 400/230 KV Auto Transformer I LC Period, 400/230 KV Auto Transformer II will be occ approved date 220 Erode 400 KV Salem 400 KV Monthly Maintenance Work postponed Thu, 06-Apr-2017 8:00 Thu, 06-Apr-2017 14:00 1 Approved in Service Condition. Hence there will be no interruption of supply. is 06.04.2017 BREAKERS, JUMPERS & SWITCHES

110 KV Echur- Vandavasi,Mazhayur# 110 KV 221 Chennai 230 KV ECHUR 230 KV Monthly Maintenance Work transferred to 230 KV Acharapakkam SS. 110 KV Echur - Mazhayur # the 110 KV Pending Thu, 06-Apr-2017 09:00 Thu, 06-Apr-2017 17:00 3 0 Approved Breakers, CTs,Pts & Isolators Mazhayur # Bkr HT Load transferred to 230 KV Villupuram SS.

On 230KV Kayathar -Sanganeri feeder For a) Monthly maintenance work b)Tower to tower 222 Madurai 230 KV KAYATHAR 230 KV During the LC period, other end also availing the LC. Hence no SS affected. POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 0 Approved breaker with CT entire line. inspection work.

On 110KV SR Puthur - Nagercoil # section During the LC period,110/11 KV MPM and TGPR SS will avail total shut down as sub to total s/d 223 Madurai 110 KV SRPUDUR 230 KV between SR Puthur and MPM including Tree clearance and Tower to Tower inspection approved by SE/KKEDC/NGL. Nagercoil SS will avail supply from 110 KV SRP - Kodayar POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 14:00 1 Approved and wind gen Thengampudur, kanyakumari. I #. Hence no SS will be affected.

FOR ANNUAL RELAY TESTING WORK BT 230 KV MTPS II FEEDER BREAKER,CT'S 230 KV ARASUR FEEDER,230 KV PALLAKAPALAYAM FEEDER AND 230 KV subject to the load 224 Erode 230 KV GOBI 230 KV P&C/GOBI AND FOR MONTHLY MAINTENANCE possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 Approved WITH LINE SWITCH ANTHIYUR FEEDER ARE IN SERVICE,IT MAY CATER THE LOAD condition existing WORK

During the L.C Period HV I and LV I are tripped condition. The 110KV AC Palayam and Auto transformer I, HV I and LV I sub to load 225 Madurai 230 KV PUGALUR 230 KV For Monthly Maintenance Work 110 KV Thalapatty SS proposed total shutdown.There is no interruption to any SS. Load POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 Approved Breaker,CT's and LAS only. condition contain with in two auto transformer (II&III)

TUTICORIN -AUTO 230 On 110KV TTN-Sipcot-III feeder breaker with No SS will be affected, and the feeder is radial from other end. During this Lc period 110 226 Madurai 110 KV For Monthly Maintenance Work POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 0 Approved KV CT bus and line side switches KV Town ss will be fed from 230 KV Sipcot ss.

110 KV THENI-PERIYAR I & II # BREAKER sub to load 227 Madurai 110 KV then I 230 KV MONTHLY MAINTENANCE WORK. MONTHLY MAINTENANCE WORK. (R/F PERIYAR) POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 Approved WITH CT ONE BY ONE. ocndioti 110 KV Nangavalli # - Its CT, BREAKER, subject to transfer 228 Erode 110 KV Salem 400 KV Monthly Maintenance Work Nangavalli # fed from Mettur 230 KV SS after getting concurrence from M/s.JSW Ltd., possible Thu, 06-Apr-2017 8:00 Thu, 06-Apr-2017 14:00 1 Approved BUS & LINE SWITCHES of loads

110 KV KARAIKUDI-VALUTHUR # SEC. FEEDER TO BE KEPT RADIAL FROM VALUTHUR UPTO R.S.MANGALAM AND TO 229 Madurai 110 KV KAVANOOR 230 KV BET. R.S.MANGALAM AND THIRUVADANAI LINE MAINTENANCE WORKS KEPT RADIAL FROM KARAIKUDI UPTO THIRUVADANAI. ANANDUR SS TO BE POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 sub to total s/d Approved (INCLUDING ANANDUR UNDER SHUTDOWN; L.R. 0.7 MW

subject to During LC period110KV Pudhansandai SS availing Total Shut down.110KV Rasipuram puthansanthai ss 110KV Pudhansandai feeder CB, CTs and SS will be transferred to 110KV Salem-Mallur feeder.110KV Namakkal SS will be PUDHANCHANTHAI 230 For monthly maintenance works pending for 3 availing tsd; the 230 Erode 110 KV Line Switch.110KV West Bsu, its PTs and transferred to 110KV PSI-Valayapatty feeder. 110KV Namagiripet SS will be transferred possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 Approved KV momnths. western bus lc will Bus Side Switches-5 Nos. to 110KV DVK-Thammampatty feeder.Other 110KV feeders will be fed through Auto-II in be subject to load service.No supply interruption. condition

231 Madurai 110 KV kinnimangalam 230 KV 110KV KNMLM - THENI 1 # Monthly maintenance works for breaker and CT The feeder will be radial from 230KV Theni SS POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 0 Approved

110 KV ALANGUDY SS, 110 KV NAGUDY SS, 110 KV KODIKKULAM SS IN 110 KV AUTO 1, HV1, LV1 AND 110KV ALANGUDY ALANGUDY EID PARRY FEEDER AVAILING TOTAL SHUT DOWN AND 110 KV EID PARRY FEEDER LINE PORTION AUTO I, BREAKER,CT,ISOLATORS AND EHT LINE SUPPLY FOR ALIYANILAI SS AND EID PARRY CO GENERATION IS TO BE BACK BETWEEN 230KV SS AND EID PARRY AND sub to load 232 Madurai 230 KV PUDUKOTTAI 230 KV MAINTENANCE WORKS AND GRT TESTING FED THROUGH 110 KV SIPCOT FEEDER. 110 KV PUDUKKOTTAI SS IN 110 KV POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 Approved 110KV ATHANAKKOTTAI FEEDER LINE condition WORKS. SIPCOT FEEDER AND 110 KV VADAKADU SS IN 110 KV ADHANAKKOTTAI FEEDER PORTION BETWEEN 110KV MALAIYUR SS ALSO AVAILING TOTAL SHUT DOWN AND HENCE THERE WILL BE NO TO 110KV VADAKADU SS INTERUPTION OF SUPPLY TO ANY SS. 110KV Mayiladuthurai- Thiruvarur feeder sub to s/d of Subject to Total 233 Madurai 110 KV KADALANGUDI 230 KV portion between Mayiladuthurai and Peralam Line inspection and rectification work No interruption to any SS. 110KV Perambur and Peralam SS proposed to shutdown. POSSIBLE Thu, 06-Apr-2017 10:00 Thu, 06-Apr-2017 16:00 1 neelakudi shutdown SS. subject to the PALLAKAPALAYAM 230 234 Erode 230 KV Auto Transformer -I-HV and LV side Monthly Maintenance Auto Transformer -II- manage the Load possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 other auto tr Approved KV loading limit 1)Auto Transformer -1 will be in Service. 2)110KV Pasumalai - Sembatty feeder will be 100 MVA AUTO - II, HVB - II, LVB - II, CT 1)Monthly Maintenance Works 2)Attending to Oil kept radial from Sembatty end. 3)110/33-11KV Arasaradi SS and 110KV Pasumalai SS sub to load 235 Madurai 230 KV PASUMALAI 230 KV POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 14:00 1 Approved only. leak in the Auto. will be under Shutdown Relief - 62 MW. 4)110KV Pasumalai - Alagarkoil -2 Feeder will be condiiton kept radial from other end. 1) During LC period 230/110KV Auto Transformer - II(100MVA)will be in service and cater sub to load 1)230/110KV Auto Transformer-I RENGANATHAPURAM station load.2) 110KV RNPM - UDPT # radial from UDPT End.3) 110KV RNPM - SBT - I condiiton and 236 Madurai 230 KV (100MVA)HV,LV Breaker & CT's2)110KV 1) & 2) monthly maintenance works POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 16:00 1 Approved 230 KV # radial from SBT End.4) 110KV RNPM SS and 110KV Chinnakkampatty SS avail total concurrance from RNPM - UDPT # Br, CT's shutdown. hence no interruption to any SS udmpt

UNIT IN SERVICE. 400KV FEEDERS KARAMADAI-II AND PALAVADI -I&II AND ICT -I&II occ approved and MONTHLY MAINTENANCE WORKS AS 237 Erode 400 KV MTPSII 400KV KARAMADAI-I FEEDER ARE IN SERVICE. ALL 230KV FEEDERS MTPS-I,GOBI,MALCO AND STANDBY possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 subject to the load Approved APPROVED BY OCC TRANSFORMER EXCEPT THINGALUR ARE IN SERVICE. condition

Auto Transformer -I-HV and LV side.Its entire PALLAKAPALAYAM 230 238 Erode 230 KV Transformer ,LAS,CT'S,Breakers &jumpers Monthly Maintenance Auto Transformer -II- manage the Load possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 0 Approved KV and Switches

239 Madurai 230 KV UDAYATHUR 230 KV 230/33kv Power Tr1, HV and LV breaker Monthly maintenance work During the LC period the Power Tr1 loads will be transferred to other Power Trs. POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 14:00 1 sub to wind gen Approved

During the LC period, a) other end also availing LC on the same feeder. b) All other 230 KV TRICHY - ALUNDUR II Feeder sub to load 240 Madurai 230 KV TRICHY 230 KV 0 230KV feeders will be in tied condition. c) Hence there will be no interruption of supply to POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 Approved breaker, CTs, Line Isolator and line entire. condiiton any of the feeder and SS.

110 KV KPH 6- S'NALLAH # BREAKER @ subject to the load 241 Erode 110 KV KUNDAH PH6 ANNUAL RELAY TESTING WORK FEEDER WILL BE KEPT RADIAL FROM OTHER END possible Thu, 06-Apr-2017 10:00 Thu, 06-Apr-2017 17:00 1 Approved KPH6 end condition existing

GENERATI THE PWD DEMAND WILL BE MEET OUT BY OTHER STANDBY MACHINES AT DAM 242 Erode NG METTUR DPH MACHINE 1 MONTHLY MAINTENANCE WORKS possible Thu, 06-Apr-2017 7:00 Thu, 06-Apr-2017 15:00 1 0 Approved POWER HOUSE. STATIONS

Line Premansoon Inspection & Rectification work During the LC period all other 230KV Feeders are in tied condition. Hence there will be no Sub to PPN-TVR 243 Madurai 230 KV THIRUVARUR 230 KV 230KV PPN - Thanjavur Feeder POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 Approved and PPN Plant side Relay Testing work. interruption of supply to any other substation. in tied condition

subject to the OTHAKKAL MANDABAM 110 KV OKM-Udumalpet I Feeder (Breaker, During the LC period, 110KV OKM-Udumalpet I feeder will be kept radial from 110KV 244 Erode 110 KV for monthly maintenance works. possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 14:00 1 feeder being kept Approved 230 KV CT's & Line switch) Udumalpet SS. Hence, No SS will be affected. radial from udpt ss

DURING THE PERIOD OF SHUTDOWN , EXCEPT 100 MVA AUTO TRANSFORMER-III 245 Chennai 230 KV TONDIARPET 230 KV 100 MVA AUTO TRANSFORMER-III FOR ROUTINE MAINTENANCE WORKS Possible Thu, 06-Apr-2017 09:00 Thu, 06-Apr-2017 13:00 1 0 Approved ALL OTHER FEEDERS AND EQUIPMENTS WILL BE IN SERVICE.

During the above shutdown period, the Eachangadu 230 KV S.S Loads will be fed from 50 MVA Auto Transformer-1, HV-1 and LV1-1 Auto Transformer-II (50MVA).loads will be with in one Auto Transformer capacity since sub to load 246 Madurai 230 KV EACHANGADU 230 KV MONTHLY MAINTENANCE WORK. POSSIBLE Thu, 06-Apr-2017 10:00 Thu, 06-Apr-2017 17:00 1 Approved Breakers, CTs and LAS 110 KV Viruthachalam SS Loads are already transferred to 110 KV Neyveli- deviakurichi condition feeder.

1. Monthly maintenance work2. Annual relay testing During the LC period, Dindigul and railway traction SS loads will be transferred to 247 Madurai 110 KV SEMBATTY 230 KV 110KV SBT - Dindigul # Bkr, CTs and relays POSSIBLE Thu, 06-Apr-2017 10:00 Thu, 06-Apr-2017 17:00 1 0 Approved work Alagarkovil - II feeder. Hence no interruption to any SS.

230 KV MYVADI - PONNAPURAM - II subject to the load 248 Erode 230 KV Udumalpet 400 KV MONTHLY MAINTENANCE WORK BOTH END AVAIL LC possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 Approved FEEDER BREAKER, CT AND LINE ENTIRE condition existing

249 Chennai 230 KV Thiruvalam 400 KV 230KV S.P.Koil Feeder Maintenance & GRT Periodical relay test 230KV S.P.Koil Feeder kept off condition at both end. Possible Thu, 06-Apr-2017 09:00 Thu, 06-Apr-2017 17:00 1 0 Approved

subject to 110KV Ingur feeder Breaker, CTs and line 250 Erode 110 KV THINGALUR 230 KV Monthly Maintenance 110KV Kunnathur SS availing total shutdown. The Feeder willbe Backcharged. possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 14:00 1 kunnathur ss Approved Isolator. availing tsd 1)Line inspection and rectification work 2)Relay No interruption to any SS. All other feeders will be in tied condition. PPN plant is under Sub to PPN-TVR 251 Madurai 230 KV KADALANGUDI 230 KV 230KV PPN- Thanjavur feeder entire POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 Approved testing work at Plant end. shutdown condition. in tied condition 1.Auto Transformer II(HV & LV Breakers, CTs and LAS)2.110KV Peelamedu feeder Scheduled shutdown at 110/11KV Peelamedu SS and LC proposed at 230KV Thudiyalur subject to tsd 252 Erode 230 KV COIMBATORE 230 KV Monthly Maintenance Works possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 16:00 1 Approved Breaker and CTs3.230KV Thudiyalur feeder SS on 230KV Thudiyalur to Coimbatore feeder. being realized Breaker and CTs 110 KV UDUMALPET LINK II FEEDER DURING LC PERIOD THE ABOVE FEEDER LOADS WILL BE CATER IN 110KV UDT Approved Subject to 253 Erode 110 KV UDUMALPET 230 KV FOR MONTHLY MAINTENANCE WORKS 0 Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 0 BREAKER AND LINE ENTIRE I&III FEEDERS wind Generation 400KV ABISHEKAPPATTI FEEDER MAIN App in 129 254 Madurai 400 KV kamuthi 400 KV MONTHLY MAINTENANCE 400KV BUS WILL BE FEED THROUGH TIE BAY POSSIBLE Thu, 06-Apr-2017 10:00 Thu, 06-Apr-2017 17:00 1 Approved BREAKER occ/127

1.110KV ACK-SPKOIL I FEEDER WILL BE RADIALLY CHARGED FROM OTHER END UPTO 110KV MADURANTHAGAM SS AND LINE SIDE ISOLATOR OPENED TOWARDS 110KV ACK-SP KOIL I&II FEEDER 230KV ACK SS SIDE AT 110KV MADURANTHAGAM SS.2.110KV ACK-SPKOIL II 255 Chennai 110 KV ACHRAPAKKAM 230 KV BREAKERS AND CT'S WITH LINE SIDE TO CARRYOUT MONTHLY MAINTENANCE WORK Possible Thu, 06-Apr-2017 09:00 Thu, 06-Apr-2017 16:00 1 0 Approved FEEDER WILL BE RADIALLY CHARGED FROM OTHER END UPTO 110KV VELLORE ISOLATOR (ONE BY ONE) SS AND LINE SIDE ISOLATOR OPENED TOWARDS 230KV ACK SS SIDE AT 110KV VELLORE SS.3.HENCE NO INTERUPTION OF POWER SUPPLY.

i)For monthly maintenance works, ii)Making initial i)230KV Coimbatore feeder entire and i)230KV OKM,PH4 & Karamadai feeders will be in service, ii) 110KV PNP SS will be fed arrangements for erection of gantry tower for the subject to the load 256 Erode 230 KV THUDIALUR 230 KV ii)110KV PNP feeder section between through 110KV Pykara feeder & 110KV Maddampalayam SS will be fed from 230KV possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 Approved new 110KV Kathirnaickenpalayam bay at 230KV condition existing Thudiyalur & Kathirnaickenpalayam SS Karamadai SS. Thudiyalur SS. subject to the During LC period there is no SS will be affected since there is inter connected SS fed from 257 Erode 110 KV Udumalpet 110 KV Monthly Maintenance work possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 other link feeders Approved line between UDT and Kongalnagaram SS other end. loading limit Sunguvarchatram 400 258 Chennai 230 KV 230KV SVC - Oragadam # entire for monthly maintenance work During the LC period the 230KV SVC - Oragadam # will be out of service Possible Thu, 06-Apr-2017 09:00 Thu, 06-Apr-2017 17:00 1 0 Approved KV

259 Chennai 230 KV Orgadam 230KV SVC - Oragadam # entire for monthly maintenance work During the LC period the 230KV SVC - Oragadam # will be out of service Possible Thu, 06-Apr-2017 09:00 Thu, 06-Apr-2017 17:00 1 0 Approved

230 KV Ponnapuram - Myvadi II # Breaker, For annual relay test by P&C WING/UDT & 1. OTHER END SS WILL ALSO AVAIL LC ON 06.04.20172. 230KV GRID #, HENCE NO subject to the load 260 Erode 230 KV PONNAPURAM 230 KV possible Thu, 06-Apr-2017 10:00 Thu, 06-Apr-2017 17:00 1 Approved CTs & Line entire MONTHLY MAINTENANCE WORK SS WILL BE AFFECTED condition existing

230KV Kayathar feeder Breaker CTs& 261 Erode 230 KV SANKANERI 230 KV For monthly maintenance purpose During the LC period thre will be no supply in the Entire feeder. POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 14:00 1 0 Approved Lineswitches.

SPR During the period of shutdown the entire load of 230KV SIPCOT Mambakkam SS 262 Chennai 230 KV SIPCOT(MAMBAKKAM) Breaker, Current Transformers & Line side For monthly maintenance works. [Approximately: 45MW] will be fed from 400KV SV.Chatram SS through 230KV SIPCOT- Possible Thu, 06-Apr-2017 10:00 Thu, 06-Apr-2017 17:00 1 0 Approved 230 KV isolator only. SV.Chatram feeder without interruption.

During the LC period 1. Singarapet end breaker alreay in Handtrip condition2. By availing 110 KV SSREL # Breaker, CTs & line To carry monthly maintenance work by blink between 110 KV Singarapet - SSREL feeder line isolators towards Singarapet at 110 263 Erode 110 KV SINGARAPET 230 KV possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 15:00 1 already kept open Approved isolators AEE/MTC/230 KV SS / SPT KV Uthangarai SS will be opened. 3. 110 KV Uthangarai SS loads already fed by Karimangalam 230KV SS 230 KV Arasur - Kundaha PH-II feeder For Erection and commissioning of New Numerical subject to the load 264 Erode 230 KV ARASUR 230 KV During the Line Clear period,Remaining five numbers 230 KV Feeders will be in service. possible Thu, 06-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 2 Approved Br,CTs and line side Isolator Distance protection relay by P & C wing/Thudialur. condition existing

subject to the 230/110 KV Auto transformer - II, HV-II, LV- During the Line Clear period,1)110 KV Saravanampatty SS under Total Shut down.2)If 265 Erode 230 KV ARASUR 230 KV For Monthly maintenance work . possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 16:00 1 other auto trs Approved necessary 110 KV Karamadai II feeder will be radial from 230 KV Karamadai SS. loading limit

a) Preventive Monthly maintenance work. 230KV Alundur -Trichy II feeder breaker, During the LC period, a) Other end also avail shutdown. b) All other 230 KV feeders will sub to load 266 Madurai 230 KV ALUNDUR 230 KV b)premonsoon inspection and tree cutting work. POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 Approved CT'S, CVT'S and line isolators. be in service. c) There will be no interruption of supply to any other feeders. condiiton c)Relay Testing work.

During the LC period both ends Maintenance work programmed and hence no interruption 267 Erode 110 KV Singarapet 110 KV 110 KV METTUR # I SF6 Bkr & CTs. Monthly maintenance work 0 Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 15:00 1 repeat of 53377 Not considered of supply

During the LC period1. At loc.180 line isolator towards Singarapet will be kept opened Subject to 110 KV METTUR # I SF6 Bkr & CTs with Line to tie mettur 268 Erode 110 KV Singarapet 110 KV Monthly maintenance work condition2. 110KV Bommidi railway traction load will be transferred to 110KV Mettur II postponed Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 15:00 1 EE/SLDC/Erode isolators feeder 2 first feeder approval

400KV Tie Breaker for Karaikudi and During the LC period there will be no supply in 400KV Tie Breaker for Karaikudi and App in 129 269 Madurai 400 KV kayathar230kv Monthly Maintenance work POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 Approved Kamudhi feeder (408-52) Kamudhi feeder (408-52) only. hence no substation affected. occ/128

a.For replacement of damaged fixed jaw contacts in a.110kv Panjetty feeder 110 kv Metrowater and 110kv Korattur feeder loads will be 270 Chennai 230 KV MANALI 230 KV Auto Transformer-3 110kv Bus switch in 110kv LV Bay and removal of Possible Thu, 06-Apr-2017 10:00 Thu, 06-Apr-2017 17:00 1 0 Approved transferred to other ends hotline jumper

occ approved and 1.400KV MTPS stage III #1 main and tie 271 Erode 230 KV KARAMADAI 230 KV For maintenance works Other 400KV feeders will be in service possible Thu, 06-Apr-2017 10:00 Thu, 06-Apr-2017 17:00 1 subject to the load Approved breakers and its CTs and CVTs condition

other two feeders 272 Erode 110 KV METTUR AUTO 230 KV 110KV MALCO I FEEDER MONTHLY MAINTENANCE WORK DURING THE LC PERIOD 110KV MALCO II&III FEEDERS WILL BE IN SERVICE possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 Approved will be in service

1) The Shift In-Charge/PPN Plant (Er.C.Jayakumar) has requested LC for annual relay testing in this 230 KV Thanjavur - PPN feeder, Breaker, CT, feeder at PPN Plant end,2) For monthly During the LC period,1) all other 230 KV feeders will be in tied condition,2) no supply Sub to PPN-TVR 273 Madurai 230 KV THANJAVUR 230 KV POSSIBLE Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 Approved CVT. maintenance works by the AEE/Mtce/Thanjavur,3) interruption to any SS. in tied condition For carrying out premonsoon inspection works by the AEE/Lines/Thanjavur.

Subject to For Routine maintenance work and Annual Relay 274 Chennai 110 KV ATHIPET 230 KV 110KV CCTL feeder 1. There will be no supply to M/s CCTL EHTSC.2. All other feeders will be in service Possible Thu, 06-Apr-2017 11:00 Thu, 06-Apr-2017 17:00 1 concurrence from Approved Test work M/s CCTL EHTSC kph 6 to Subject to a) during the lc period the above feeder fed radially from other endb) No ss will be sandynallah 275 Erode 110 KV Sandinallah 110 KV 110kv sandinallah-pykara feeder annunal relay testing work postponed Thu, 06-Apr-2017 10:00 Thu, 06-Apr-2017 17:00 1 EE/SLDC/Erode affected. feeder lc approval recommended

a) During the LC period the above feeder fed Radially from other endb) No SS will be 276 Erode 110 KV A.Thekkur 110 KV 110kv sandinallah-power house 5 Feeder Annunal relay testing work 0 Thu, 06-Apr-2017 10:00 Thu, 06-Apr-2017 17:00 1 repeat of 53604 Not considered affected.

230KV KPH2- ARASUR FEEDER SF6 277 Erode 230 KV KUNDAH PH2 FOR MONTHLY MAINTENANCE WORK SF6 BREAKER OFF IN CONDITION TOP AND BOTTOM BUS OPEN IN CONDITION Possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 0 Approved BREAKER AND ITS ACCESSIORIES PMI works in between Loc.30 and 79 by subject to bb 1 278 Erode 110 KV KARAMADAI 230 KV 110KV Pykara-Bhavani Barrage 1 feeder LC programmed at both end. possible Thu, 06-Apr-2017 9:00 Thu, 06-Apr-2017 17:00 1 Approved AE/Lines/Kattabettu concurrence

During the period of L/C time,1. 230 KV T.V.Malai - Neyveli # will be OFF condition at THIRUVANNAMALAI 230 230 KV Tiruvannamalai - Neyveli #, Breake, 279 Chennai 230 KV Monthly maintenance work both ends.2. Other 2 Nos 230 KV T.V.Malai - Singarapet & Villupuram feeders will be in Possible Thu, 06-Apr-2017 09:00 Thu, 06-Apr-2017 15:00 1 0 Approved KV CT's and Line Isolator service. Hence there is no interruption of supply please.

Durind the period of LC 230 KV BUS A will be in service.Hence NO Interruption of 280 Chennai 230 KV CUDDALORE 230 KV For monthly maintenance works Possible Thu, 06-Apr-2017 09:00 Thu, 06-Apr-2017 17:00 1 0 Approved SupplyConcurrence obtained from SE/O/Villupuram

THIRUVALAM 230 KV 281 Chennai 230 KV For replacement of defective disc at Location 124. Possible Thu, 06-Apr-2017 09:00 Thu, 06-Apr-2017 14:00 1 0 Approved & SPKoil feeders 230KV Link I, Link II, Singarapet feeders are in service.Hence there will be no interruption of supply please.

i. 110 KV Pallur SS (16 MW) will be availed total shut down. ii. 110 KV Takkolam 110 KV Pallur Feeder Breaker ,CTs and Line 282 Chennai 110 KV MOSUR 230 KV For attending Monthly Maintenance work SS(10MW) ) will be availed total shut down.iii. 110KV Punnai SS (8MW) will be availed Possible Thu, 06-Apr-2017 09:00 Thu, 06-Apr-2017 14:00 1 0 Approved Isolators total shut down.iv. Hence there will be no interruption of supply

230/110KV Auto Transformer No-II, 230KV i) 110 Pallur, Takkolam, Punnai SS are availing Total Shutdown ii) 230/110 KV Auto 283 Chennai 230 KV MOSUR 230 KV For attending Monthly maintenance work Possible Thu, 06-Apr-2017 09:00 Thu, 06-Apr-2017 17:00 1 0 Approved transformer I,III & IV are in service iii) Hence there will be no interruption of supply please. only For jumpers tightening work in the line between Villupuram &Chendur. 110KVChendur SS 110 KV Villupuram-Acharapakkam-I # 284 Chennai 110 KV VILLUPURAM 230 KV For monthly maintenance works. availing Total shutdown and Elamangalam SS will be kept radial from Acharapakkam Possible Thu, 06-Apr-2017 09:00 Thu, 06-Apr-2017 17:00 1 0 Approved (Breaker, CTs and line side isolator only). 230KV SS 230 kv okm to 230 KV MYVADI - PONNAPURAM - I Approved Subject to 285 Erode 230 KV Udumalpet 400 KV MONTHLY MAINTENANCE WORK BOTH END AVAIL LC postponed Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 anaikadavu lc FEEDER BREAKER, CT AND LINE ENTIRE wind Generation recommended 230 kv okm to 230 KV Ponnapuram - Myvadi I # Breaker, For annual relay test by P&C WING /UDT & 1. OTHER END SS WILL ALSO AVAIL LC ON 05.04.20172. 230KV GRID #, HENCE NO Approved Subject to 286 Erode 230 KV PONNAPURAM 230 KV postponed Fri, 07-Apr-2017 10:00 Fri, 07-Apr-2017 17:00 1 anaikadavu lc CTs & Line entire MONTHLY MAINTENANCE WORK SS WILL BE AFFECTED. wind Generation recommended

Auto transformer I & II - at time of LC Auto Tr I in off condition and Auto II in service Auto Transformer I & II Auto Transformers I condition after completion of work Auto Tr II in off condition and Auto I in service 287 Chennai 230 KV ECHUR 230 KV Monthly Maintenance Work Pending Fri, 07-Apr-2017 09:00 Fri, 07-Apr-2017 17:00 3 0 Approved & II (One by one) condition.(One by One) Hence No interruption of supply any of the substation of the above mentioned time period.

Present PWd Demand is 200C/S.During the LC period, the 110KV ppm-otpatti feeder will 110Kv Papanasam-O.T Patti# Breaker with sub to ppm pwd 288 Madurai 110 kV PAPANASAM For carry out monthly maintenance work be radial from other end. 110kv ppm-kytr#will be in service. Hence no ss will be affected POSSIBLE Fri, 07-Apr-2017 10:00 Fri, 07-Apr-2017 12:00 1 Approved CT demand please. subject to the 289 Erode 230 KV MTPS MTPS-I to Salem 400KV SS-I Monthly maintenance Programmed LC possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 other feeder Approved loading limit

110 KV Veerasigamani WF SS will be fed from 110 KV Kodikurichi- Veerasigamani# I by 290 Madurai 110 KV Kodikurichy230kv 110 KV Veerasigamani # II, Breaker with C.T Monthly maintenance work POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 0 Approved closing of AB Switch towards Veerasigamani at Echantha SS.

110 KV Veerasigamani WF SS will be fed from 110 KV Kodikurichi- Veerasigamani# I by 291 Madurai 110 KV Kodikurichy230kv 110 KV Veerasigamani # II, Breaker with C.T Monthly maintenance work 0 Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 repeat Repeat closing of AB Switch towards Veerasigamani at Echantha SS.

On 110 KV Kayathar - Gangaikondan feeder a) For monthly maintenance work. b) Tower to During the LC period, Gangaikondan SS will be radially fed from Thalayathu end. Hence 292 Madurai 110 KV KAYATHAR 230 KV POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 0 Approved Section between Kayathar to Gangaikondan. Tower Inspection Work. no SS affected

110KV ERODE 1 feeder Breaker,CTs and subject to the load 293 Erode 110 KV THINGALUR 230 KV Monthly Maintenance Works Other end also availing LC. possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 Approved Line Isolators condition existing

110 KV ERODE - TINGALORE I FEEDER DURING LC PERIOD NO SS WILL BE AFFECTED.NECESSARY CONCURRENCE subject to the load 294 Erode 110 KV Erode 110 KV MONTHLY MAINTENANCE WORK possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 14:00 1 Approved BREAKER AND CT OBTAINED FROM SE/EEDC/ERODE. condition existing

During the LC period Auto Transformer-I and 110KV feeders Mettur,Barrage PH-III & For monthly maintenance of 110KV Bus coupler subject to division 295 Erode 110 KV ANTHIYUR 230 KV 110KV Bus coupler breaker and CT only. Anthiyur feeder will be in 110KV Bus-I.During the LC period Auto Transformer-II and possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 15:00 1 Approved breaker and CT of loads only 110KV feeders Thalavaipettai & Gobi feeder feeder will be in 110KV Bus-II.

230 KV Pasumalai - Checkanurani # - I , BKR 296 Madurai 230 KV PASUMALAI 230 KV a)Maintenance Works of BKR & CT,LI EE / O / CKNI has also programmed POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 14:00 1 0 Approved & CT,LI only

1) The Feeder will be kept radial from Other end upto Achampathu SS. 2)110KV AB 1)110 KV Pasumalai - Sembatty # BKR & Switch towards Pasumalai at Achampathu SS and towards Achampathu at Pasumalai SS 297 Madurai 110 KV PASUMALAI 230 KV CT,LI only. 2)Section between Pasumalai and Maintenance Works of BKR,CT and LI. 0 Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 14:00 1 Wrong entry Not considered will be under open condition. 3) In case of the LC applied in Sl.No 9 for TLC works is not Achampathu approved then this LC may be considered for approval. 110 KV PERIYAR-THENI 2 FEEDER DURING THE LC PERIOD 110KV PYR-THENI 2 FEEDER RADIAL FROM THENI SS TO BREAKER WITH CT AND LINE SIDE AB sub to load 298 Madurai 110 KV PERIYAR ANNUAL MAINTENANCE WORK CUMBUM SS.AT CUMBUM SS TOWARDS PERIYAR POWER HOUSE AB SWITCHES POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 13:00 1 Approved SWITCHES, SECTION BETWEEN PYR-PH condiiton KEPT OPEN.HENCE NO SS WILL BE AFFECTED. TO CUMBUM SS On 100 MVA Auto Tr I, LV I, HV I breaker & 299 Madurai 230 KV SRPUDUR 230 KV OLTC oil changing work. During the LC period Auto Tr II & III will be in service. POSSIBLE Fri, 07-Apr-2017 10:00 Fri, 07-Apr-2017 15:00 1 0 Approved CT only.

sub to load 1) Both end breakers to be tripped2) Both end Bus and Line isolators to be opened3) Both 300 Madurai 230 KV TTPS 230KV TTPS- SIPCOT FEEDER For maintenance work and MRT testing POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 condiiton and Approved end Earth switches to be closed condition TTPS gen

1) During the LC period there will be NO supply in 230KV CKNI #,N.M.PATTY # and P.Tr- sub to wind gen Amuthapuran 230KV Bus section-1 1. 2) P.Tr-1 fed from 230KV KODI-1 # and KODI-2 #. 3) 230KV CKNI #,N.M.PATTY # and 230 CKNI- 301 Madurai 230 KV AMUTHAPURAM 230 KV consisting of CKNI-1 #,N.M.PATTY-2 # and Routine Maintenance Work Radial from other end. 4) 33KV feeders in respect of P.Tr-1 to be tied with P.Tr-2.Hence POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 Approved NLMPT# in tied P.Tr-1 NO Wind generation affected. 5) Hence NO SS will be affected. 6) Cocurrence obtained condition. from SE/NCES/TIN.

FOR ANNUAL RELAY TESTING WORK BT subject to the 302 Erode 230 KV GOBI 230 KV CAPACITOR BANK II BREAKER AND CT'S P&C/GOBI AND FOR MONTHLY MAINTENANCE CAPACITOR BANK I IS IN SERVICE AND SUBJECT TO THE VOLTAGE CONDITION approved Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 voltage profile in Approved WORK the grid 50MVA 110/33KV POWER TRANSFORMER - CBD Subject to SE/O 303 Chennai 230 KV KORATTUR 230 KV General Maintenance Work 50MVA 110/33KV POWER TRANSFORMER - II Fri, 07-Apr-2017 09:00 Fri, 07-Apr-2017 17:00 1 0 I concurrence concurrence

possible with CBD 304 Chennai 230 KV Kadapperi Auto Transformer 1 Monthly Maintenance Work Possible Fri, 07-Apr-2017 09:00 Fri, 07-Apr-2017 17:00 1 Approved concurrence

possible with CBD 305 Chennai 230 KV Kadapperi 110 kVTharamani - Velacherry# Insulator Replacement work Possible Fri, 07-Apr-2017 09:00 Fri, 07-Apr-2017 17:00 1 Approved concurrence

possible with CBD 306 Chennai 230 KV Kadapperi 230 KV Kalivanthapattu feeder Jumper checking at loc.45 Possible Fri, 07-Apr-2017 09:00 Fri, 07-Apr-2017 17:00 1 Approved concurrence subject to the 230 KV MTPS I # - Its CTs, BREAKER, BUS 307 Erode 230 KV Salem 400 KV Both end Monthly Maintenance Work Both end Monthly Maintenance Work possible Fri, 07-Apr-2017 8:00 Fri, 07-Apr-2017 14:00 1 other feeder Approved & LINE SWITCHES loading limit CHECKANURANI SW For Monthly maintenance works and Line 308 Madurai 230 KV 230Kv CKNI-Pasumalai-I feeder Entire During the LC period, there will be no supply in the entire feeder POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 0 Approved STATION 230 KV Maintenance works

For attending Auto transformer I HV and LV breakers During the LC period Auto Transformer II & III will be in service. Hence there is 'no' sub to load 309 Madurai 230 KV VALUTHUR 230 KV Auto Transformer I and it's CT's and isolators Monthly maintenance POSSIBLE Fri, 07-Apr-2017 10:00 Fri, 07-Apr-2017 17:00 1 Approved interruption in power evacuation. condition work.

A) 110 KV KAVANOOR-MANAMADURAI- FEEDER TO BE KEPT RADIAL FROM SIVAGANGA TO MANAMADURAI; SIVAGANGA # BR. & CT B) 110 KV MONTHLY MAINTENANCE WORKS AND LINE Sub to KKDI Auto 310 Madurai 110 KV KAVANOOR 230 KV MANAMADURAI, ARASANUR AND NELMUDIKARAI SS UNDER TOTAL SHUTDOWN; POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 Approved KAVANOOR-MMDU-SVGA # SEC. BET. MAINTENANCE WORKS Loading. L.R. 21.9 MW KAVANOOR & MANAMADURAI

During LC period110KV Namakkal SS availing Total Shut Down.110KV Elanagar SS now subject to the tsd PUDHANCHANTHAI 230 Auto-I, HV & LV CBs, CTs, LASs and 230KV back fed throuh 110KV PSI-Rasipuram feeder will be transferred to 230KV Unjanai 311 Erode 230 KV For regular maintenance works. possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 relief being Approved KV Switches. SS.110KV Rasipuram SS will be transferred to 110KV Salem-Malllur feeder.Other 110KV realized feeders will be catered through Auto-II in service.No supply interruption.

312 Madurai 110 KV KADALANGUDI 230 KV 110KV Mayiladuthurai- KGTPS feeder entire Line inspection and rectification work No interruption to any SS. All other feeders will be in tied condition. POSSIBLE Fri, 07-Apr-2017 10:00 Fri, 07-Apr-2017 16:00 1 0 Approved

1)110 KV Pasumalai - Sembatty # BKR & 1) The Feeder will be kept radial from Other end upto Achampathu SS. 2)110KV AB 313 Madurai 110 KV PASUMALAI 230 KV CT,LI only. 2)Section between Pasumalai and Maintenance Works of BKR,CT and LI. Switch towards Pasumalai at Achampathu SS and towards Achampathu at Pasumalai SS POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 14:00 1 0 Approved Achampathu will be under open condition.

1)110KV RNPM - Kovilur # Br,CT's & Line sub to load RENGANATHAPURAM During LC period 110KV RNPM - Kovilur # No supply in the feeder.110KV Kovilur 314 Madurai 110 KV switch's2)110KV RNPM - Kovilur # section 1)Monthly Maintenance works2)Tree cutting works POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 16:00 1 condition and toal Approved 230 KV SS,33KV Chatrapatty SS and 33KV Vallipatty SS avail total Shutdown. between RNPM and Kovilur SS s/d

110 KV KGTPS-MAYILADUTHURAI FEEDER 110 KV KGTPS-MAYILADUTHURAI FEEDER ANNUAL RELAY TESTING WORKS BY 315 Madurai 110 KV KUTTALAM BREAKER WITH ENTIRE LINE AT BOTH AEE/P&C/THIRUVARUR AT BOTH END.BREAKER During the LC period there is no interruption of supply to any ss. POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 0 Approved END. TESTING AND OTHER MAINTENANCE WORKS IN ISOLATORS AT KGTPS END.

316 Madurai 230 KV UDAYATHUR 230 KV 230/33kv Power TR 2 HV & LV Breaker Monthly Maintenance Work During the LC period the Power Tr 2 loads will be transferred to other Power Trs. POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 14:00 1 sub to wind gen Approved

sub to load During the L.C period, 1) other end also availing L.C on the same Feeder. 2) All other 1. 230KV Trichy - Perambalur feeder Breaker condition and 317 Madurai 230 KV TRICHY 230 KV 0 230KV feeders will be in tied condition. 3) There will be no interruption of supply to any of POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 Approved , CTs, Line Isolator and line entire. Alandur ICT the feeder and SS. Loading

During the LC period 230KV Main Bus-II will be in service. Hence there will be no 318 Madurai 230 KV THIRUVARUR 230 KV 230KV Main Bus - I 230KV Main Bus-I maintenance work POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 0 Approved interruption of supply to any other substations.

OTHAKKAL MANDABAM 230 KV OKM-Myvadi Feeder Entire (Breaker, subject to the load 319 Erode 230 KV for monthly maintenance works. During the LC period, the other 230 KV feeders are in service to cater the SS loads. possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 Approved 230 KV CT's, 89M1, 89M2 & 89L Isolators) condition existing

sub to load 110KV SBT - Alagarkovil II # Bkr, CTs and During the LC period, the feeder will be radial from other end upto Kosavapatti SS. Hence 320 Madurai 110 KV SEMBATTY 230 KV 1. Monthly maintenance work2. Tree cutting work POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 conditon and alkl Approved sec. bet. SBT and Kosavapatti SS no interruption to any SS. auto loading

230/110KV Auto II, HV II and LV II Bke and During the LC period Auto I and III will be in service and adequate to feed the station sub to load 321 Madurai 230 KV SEMBATTY 230 KV Monthly maintenance work POSSIBLE Fri, 07-Apr-2017 10:00 Fri, 07-Apr-2017 17:00 1 Approved CTs load. conditon

230 KV MYVADI - OTHAKALMANDABAM subject to the load 322 Erode 230 KV Udumalpet 400 KV MONTHLY MAINTENANCE WORK BOTH END AVAIL LC possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 Approved FEEDER BREAKER, CT AND LINE ENTIRE condition existing

subject to sldc 323 Erode 110 KV DEVIAKURICHI 230 KV 110 KV Thirukovilur Feeder Breaker and CTs. For Monthly Maintenance work 110 KV Thirukovilur feeder will be kept radial from Villupuram 230KV SS end. possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 chennai Approved concurrence

During the period of LC, the other 5 No's 230KV feeders and 3 No's Auto-Transformer will 324 Chennai 230 KV ARNI 230 KV 230KV Tie Breaker(Bus Coupler) For monthly maintenance work. Possible Fri, 07-Apr-2017 09:00 Fri, 07-Apr-2017 14:00 1 0 Approved be in service.Hence no interruption of supply please.

sub to load TUTICORIN -SIPCOT On 230 KV SIPCOT-TTPS Feeder breaker a) For monthly maintenance work. b) Changing of 325 Madurai 230 KV Â During the L.C period, no SS will be affected . POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 condiiton and Approved 230 KV with CTs and line isolators only. Main-II Distance Relay TTPS gen

subject to the 1.Scheduled Shutdown at 110/11KV Kallimadai SS on 07.04.20172.110KV CBE-Arasur feeder being kept 326 Erode 110 KV COIMBATORE 230 KV 110KV Arasur feeder Breaker and CTs only For Monthly Maintenance Works Feeder loads(KPR Mill EHT Service, Sulur Traction EHT Service and 110KV Irugur SS) possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 14:00 1 Approved radial from arasur will be transferred to 230KV Arasur SS. ss

subject to the 110 KV UDUMALPET LINK I FEEDER DURING LC PERIOD THE ABOVE FEEDER LOADS WILL BE CATER IN 110KV UDT other two link 327 Erode 110 KV UDUMALPET 230 KV FOR MONTHLY MAINTENANCE WORKS possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 Approved BREAKER AND LINE ENTIRE II&III FEEDERS. feeders loading limit

110KV P.N.Palayam feeder section between Erection of gantry for the new 110KV subject to the tsd 328 Erode 110 KV THUDIALUR 230 KV 110KV P.N.Palayam SS & Thudiyalur local (110/22KV SS) will be under Total shutdown possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 Approved Thudiyalur and Kathirnaickenpalayam SS Kathirnaickenpalayam feeder being availed subject to the 230 kv MTPS 1-Salem 400 KVSS I jumbercone tightness checking at MTPS 329 Erode 230 KV METTUR AUTO 230 KV Programmed LC at MTPS 1 on 07.04.17 possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 14:00 1 other feeder Approved (K.R.Thoppur feeder I bay 1,K.R.Thoppur feeder I bay loading limit subject to the During LC period there is no SS will be affected since there is inter connected SS fed from other two link 330 Erode 110 KV Udumalpet 110 KV Monthly Maintenance work possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 Approved Entire line other end. feeders loading limit SADAYAMPALAYAM 230 subject to nces 331 Erode 230 KV 230 KV Bus coupler breaker & Isolators Annual relay testing work by P&C Palladam. During the LC period no SS will be affected. possible Fri, 07-Apr-2017 10:00 Fri, 07-Apr-2017 17:00 1 Approved KV concurrence

To carry monthly maintenance work by During the LC period both ends Maintenance work programmed and hence no interruption subject to the load 332 Erode 230 KV SINGARAPET 230 KV 230 KV Salem # Breaker, CTs & line isolators possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 15:00 1 Approved AEE/MTC/230 KV SS / SPT of supply condition existing

110KV Sankaneri-Melakallur feeder Breaker During the LC Period 110KV Melakallur Supply Radialy upto 110KV VadakkanKulamSS. 333 Erode 230 KV SANKANERI 230 KV For monthly maintenance purpose only. POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 14:00 1 0 Approved CTS&Lineswitches. Hence no SS will be affaected.

100 MVA Auto Transformer-I, HV-I, LV-I, During the above Shutdown Period 100 MVA Auto Transformer II will be in service. No sub to load 334 Madurai 230 KV SAMAYAPURAM 230 KV Monthly Maintenance Work POSSIBLE Fri, 07-Apr-2017 10:00 Fri, 07-Apr-2017 17:00 1 Approved Breakers , CT's, and isolators interruption to any other SS condition

110 KV Arasur - Karamadai II feeder( section During the Line Clear period,1)110 KV Kalapatty SS and will be fed from 230 KV subject to the 335 Erode 110 KV ARASUR 230 KV between 110 KV Neelambur SS and 110 KV For PMI works. Karamadai SS 2)110 KV Neelambur SS will be fed from 230 KV Arasur SS 3)No SS will possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 16:00 1 bifurcation of the Approved Kalapatty SS ) be affected during the L.C period. feeder

On 100 MVA Auto Tr I, LV I, HV I breaker & a.OLTC oil changing work. B.Annual relay testing 336 Madurai 230 KV SRPUDUR 230 KV During the LC period Auto Tr II & III will be in service. POSSIBLE Fri, 07-Apr-2017 10:00 Fri, 07-Apr-2017 15:00 1 repeat Approved CT only. work

subject to 110KV Singapuram Feeder-I Breakers, CT's 1.110KV Singapuram feeder-I will be fed radially from other end. 110KV Kitchipalayam 337 Erode 110 KV SALEM AUTO 230 KV Monthly Maintenance work. possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 kitchipalayam ss Approved and Line Isolators. SS will be availing total shutdown. There will be no interruption to any SS or feeder. availing tsd

230KV Singarapet feeder & 110KV Capacitor 1.230KV Singarapet feeder LC will be availed at both end. 2.3Nos 230KV feeders will be subject to the load 338 Erode 230 KV SALEM AUTO 230 KV Bank-I,II Breaker, CTs, Line isolator and Monthly maintenance work. in service. 3.110KV Capacitor Bank-I and II will be in hand trip condition. 4.There will be possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 Approved condition existing Capacitor. no interruption to any SS or feeder. subject to the 339 Erode 110 KV INGUR 230 KV 110KV Capacitor Bank I entire MONTHLY MAINTENANCE WORKS DEPENDING UPON LOAD CONDITION approved Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 14:00 1 voltage profile in Approved the grid

a.110 kv RK Nagar SS and M/s TPL-II loads will be fed from 230kv TPT SSAfter the For making T-off arrangement in 110kv cable point, 340 Chennai 110 KV MANALI 230 KV 110kv Tondiarpet feeder LC110kv GIS bus will be energized from Manali AIS SS end and remain in service along Possible Fri, 07-Apr-2017 10:00 Fri, 07-Apr-2017 17:00 1 0 Cancelled for test charging of 110 kv GIS bus with 110 kv RK Nagar SS and M/s TPL-II loads

subject to the 1.110KV Karamadai-Arasur II feeder section During LC Period Kalapatty SS will be fed from Karamadai SS and Neelambur SS will be 341 Erode 110 KV KARAMADAI 230 KV PMI by AE/Lines /Arasur possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 bifurcation of the Approved between Kalapatty and NeelamburSS fed by 230KV Arasur SS feeder

1) 110KV Salem - Singapuram feeder - I breaker kept hand tripped at Salem 230KV SS.2) subject to 110KV Salem - Singapuram feeder - I series switch at Udayaptty 110KV SS towards kitchipalayam ss 110KV Salem - Singapuram feeder - I section Salem will be kept opened.3) There will be no supply in 110KV Salem - Singapuram availing tsd and 342 Erode 110 KV SALEM AUTO 230 KV between Salem 230KV SS and Udayapataty Tension point jumpers checking. feeder - I section between Salem 230KV SS and Udayapataty 110KV SS.4) Udayapatty possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 udayapatty ss Approved 110KV SS. 110KV SS will be radially fed from Singapuram 230KV SS.5) Kitchipalayam 110KV SS being fed from will be availing Total Shutdown on that day.6) There will be no interruption of supply to singapuram ss any SS. end

A) 110KV NEMMELI THIPPIYAKUDI- 1) DURING THE LC PERIOD, 110/33-11KV MADUKKUR SS AND 110KV A) FOR MONTHLY MAINTENANCE WORK BY NEMALITHIPIYAKUDI MADUKKUR FEEDER BREAKER, CT's AND THIRUMAKKOTTAI SS RADIALLY FED FROM T(K)GTPS.2) If necessary, 110KV 343 Madurai 110 KV AEE/MTC/N T KUDI.B) FOR PREMONSOON POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 0 Approved 230 KV LINE ISOLATOR. B) 110KV NEMMELI Kovilkalappal-Madukkur-Pattukkottai tie will be created (by closing the 110KV Pattukkottai INSPECTION BY AE/LINES/PATTUKKOTTAI. THIPPIYAKUDI-MADUKKUR FEEDER Line isolator no.2 at 110KV Madukkur SS).3) No interruption to any Substation.

1)110KV Deviakurichi-thirukoilur Feeder breaker & CT's Maintenance availing 110KV Deviakurichi-Thirukoilur Deviakurichi SS. 2)110KV Deviakurichi-thirukoilur Feeder series switch at subject to sldc 344 Erode 110 KV SALEM AUTO 230 KV Feeder(Section Between deviakurichi 230KV Road & Railway crossing jumpers checking. Eaduthuvainatham 110KV SS towards Deviakurichi side will be Kept Opened.3)110KV possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 chennai Approved SS - Eaduthuvainatham 110KV SS) Deviakurichi-thirukoilur feeder will be radially fed upto Eaduthuvainatham 110KV SS from concurrence Villupuram 230KV SS.4)There will be no interruption of supply to any SS.

1)110KV Deviakurichi-Thammampatty Feeder breaker & CT's Maintenance availing subject to transfer 110KV Deviakurichi-Thammampatty Deviakurichi SS. 2)110KV Deviakurichi-Thammampatty Feeder series switch at of loads to 345 Erode 230 KV SALEM AUTO 230 KV Feeder(Section Between deviakurichi 230KV Road & Railway crossing jumpers checking. Gudamalai 110KV SS towards Deviakurichi side will be Kept Opened.3)110KV possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 Approved puthansanthai ss SS - Gudamalai 110KV SS) Deviakurichi-Thammampatty feeder will be radially fed upto Gudamalai 110KV SS from feed Pudhanchandai 230KV SS.4)There will be no interruption of supply to any SS.

For monthly maintenance work and PMI by occ approved and 230kv Karuvalur-PGCIL feeder breaker with 346 Erode 230 KV karuvalur230kv palladium lines (OCC approvec) 230kv Karamadai 230kv Karamadai feeder will be in service possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 subject to load Approved line switch feeder will be in service condition sub to load 230KV Perambalur-Trichy feeder breaker During the above period of shut down1) 230KV Trichy SS also avaling total condition and 347 Madurai 230 KV PERAMBALUR 230 KV For monthly maintenance work POSSIBLE Fri, 07-Apr-2017 10:00 Fri, 07-Apr-2017 16:00 1 Approved CT's wave trap & Line Isolater. shutdwon.2)230KV Perambalur SS will be radially fed from 230KV TAQA end Alandur ICT Loading

subject to the 230KV AUTO TRANSFORMER-II WITH HV Attending oil leakge in the PRV at y-phase by 348 Erode 230 KV ALIYAR 230 KV During LC period no ss will be affected possible Fri, 07-Apr-2017 10:00 Fri, 07-Apr-2017 16:00 1 other auto tr Approved AND LV CB,CTs company loading limit

subject to aliyar 349 Erode 110 KV ALIYAR 230 KV 110KV ALR LINK FEEDER-II CB,CT ONLY Monthly mtce work Aliyar- PH Under shutdown condition possible Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 12:00 1 Approved machine utilization

350 Erode 110 KV ALIYAR 230 KV 110KV ALR LINK FEEDER-I CB,CT ONLY Monthly Mtce work Aliyar -PH under shutdown condition 0 Fri, 07-Apr-2017 13:00 Fri, 07-Apr-2017 16:00 1 repeat of 53714 Not considered i) On 110KV Capacitor Bank-I and 110KV 110KV Capacitor Bank-I and 110kv Capacitor Bank-II ONE by one will be in 'OFF' SE/Operation 351 Chennai 110 KV THIRUVALAM 230 KV i)For Monthly Maintenance Works Fri, 07-Apr-2017 09:00 Fri, 07-Apr-2017 17:00 1 0 Approved condition iii)The 230KV Link-II, 230KV Chittoor interstate feeders,230KV Link-I # and concurrence by one 230KV Mosur feeders will be in service and cater the SS Loads. Hence there will be no interruption of supply please.

During the LC period,110 KV Valayapatti SS, Watrap SS, Erichnatham SS will be availing Maintenance Works of BKR & CT,LI and Watrap 110 APKM - T. Kallupatti # Br., CT. and line Total Shut down and 110 KV TTL SS loadwill be transferred to 110KV PPTY feeder & ANUPPANKULAM 230 LILO loc. No. 2 jumper bolt rectification work and 352 Madurai 230 KV section between 110 KV Thiruthangal SS and 110KV T.Kallupatti SS load will be transfered to 110KV APKM-PSQ feeder. At POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 17:00 1 0 Approved KV replacement of flash over disc at Loc.No.72 between Erichanatham SS. Erichanatham SS towards Watrap 110 KV isolator opend and at TTL SS towards 110 KV Valayapatti SS and Srivilliputhur SS. Valayapatti SS 110 KV isolator will be opend. Hence no SS will be affected.

For monthly maintenance work. (annual relay testing Auto T/R-I will be in service &110KV Thirukovilur #, & Acpkm-II, Thayanur feeder will be 353 Chennai 230 KV VILLUPURAM 230 KV Possible Fri, 07-Apr-2017 09:00 Fri, 07-Apr-2017 17:00 1 0 Approved work) Radial from other end.

110KV Madurapakkam- I # Between Kandamangalam SS availing total shutdown for tightening jumpers and Tree cutting at 354 Chennai 110 KV VILLUPURAM 230 KV For monthly maintenance work. Possible Fri, 07-Apr-2017 09:00 Fri, 07-Apr-2017 17:00 1 0 Approved Madurapakkam- I Kandamangalam EHT line.

1.100 MVA AUTO TR.II &III WILL be in service cater the entire ss load 2.110 kv s p koil# 355 Chennai 230 KV ACHRAPAKKAM 230 KV 100 MVA AUTO TR.I FOR MONTHLY MAINTENANCE WORK Possible Fri, 07-Apr-2017 09:00 Fri, 07-Apr-2017 12:00 1 0 Approved and Korattur-II # WILL BE RADIAL FROM OTHER END

Sub to 110 KV PERIYAR - THENI FEEDER -I Feeder Breaker with CT and Line side AB Switch for During the LC period Uthamaplayam ss Load will transferred to 110 KV Periyar-Theni - 2 356 Madurai 110 KV PERIYAR POSSIBLE Fri, 07-Apr-2017 9:00 Fri, 07-Apr-2017 13:00 1 concurrance from Approved ENTIRE annual maintenance work feeder and Gamesa & Regen Kamatchipuram wind mill SS effected. wind generators

357 Chennai 230 KV Nokia 230 KV 230KV Sriperumbudur# MONTHLY MAINTENANCE WORK Possible Fri, 07-Apr-2017 09:00 Fri, 07-Apr-2017 17:00 1 0 Approved

358 Chennai 230 KV Orgadam 230 kV 230 kV Spkoil # MONTHLY MAINTENANCE WORK Possible Fri, 07-Apr-2017 09:00 Fri, 07-Apr-2017 17:00 1 0 Approved

230 kv palladam to 359 Erode 230 KV THUDIALUR 230 KV 230KV O.K.Mandapam feeder entire Monthly maintenance and annual relay testing 230KV PH4,Karamadai & CBE feeders will be in service postponed Sat, 08-Apr-2017 9:00 Sat, 08-Apr-2017 17:00 1 othakalmandapam Approved feeder lc recommended

ECHUR 230 KV & SP Monthly Maintenance Work and Insulator 360 Chennai 230 KV 230 kv ECHUR - Kalpakkam feeder Pending Sat, 08-Apr-2017 09:00 Sat, 08-Apr-2017 17:00 3 0 Approved Koil lines Replacement work

DURING THE PERIOD OF SHUTDOWN , EXCEPT 100 MVA AUTO TRANSFORMER-II 361 Chennai 230 KV TONDIARPET 230 KV 100 MVA AUTO TRANSFORMER-II FOR ROUTINE MAINTENANCE WORKS Possible Sat, 08-Apr-2017 09:00 Sat, 08-Apr-2017 13:00 1 0 Approved ALL OTHER FEEDERS AND EQUIPMENTS WILL BE IN SERVICE.

During the period of shutdown1)110KV KWWI feeder loads will be transferred to KWWII Subject to CBD 362 Chennai 110 KV KILPAUK 230 KV 110KV Western Bus Routine Maintenance work feeder2)110KV AnnaNagar feeder load will be transferred to 230KV Korattur SS Possible Sat, 08-Apr-2017 09:00 Sat, 08-Apr-2017 16:00 1 Approved concurrence feeding3)100MVA Auto Transformer I will not be inservice

363 Madurai 110 KV KODAIYAR PH2 110 KV S.R.Pudur feeder-2 SF6 breaker A) Monthly maintenance B) Annual relay test Feeder will be radial from other end. Hence no SS will be affected. POSSIBLE Sat, 08-Apr-2017 9:00 Sat, 08-Apr-2017 17:00 1 0 Approved

230 kv kph 2 to OTHAKKAL MANDABAM 230KV OKM-Thudiyalur Feeder Entire 364 Erode 230 KV for monthly maintenance works. During the LC period, the other 230 KV feeders are in service to cater the SS loads. postponed Sat, 08-Apr-2017 9:00 Sat, 08-Apr-2017 17:00 1 kph 3 lc Approved 230 KV (Breaker, CT's, 89M1, 89M2 & 89L Isolators) recommeded

230KV NORTHERN BUS SECTION WEAK 1. 230KV TPT-ETPS & 230KV TPT-NCTPS-I FEEDERS WILL NOT BE IN SERVICE. 2. May be Subject to load 365 Chennai 230 KV TONDIARPET 230 KV 230KV NORTHERN BUS SECTION JUMPERS REPLACEMENT AND CLAMPS 100 MVA AUTO TR-II WILL NOT BE IN SERVICE. 3. 230KV LOAD TO BE RESTRICTED Sun, 09-Apr-2017 06:00 Sun, 09-Apr-2017 17:00 1 Approved possible condition TIGHTNESS CHECK. TO ONE SOURCE FEEDER.

DURING THE PERIOD OF SHUTDOWN 1) 230KV Kalivanthapattu #,230KV KITS 230 Kalivanthapattu # & 230 KV Western Bus Park#,100MVA AUTO TR-II & 230 KV Western Bus will not be in service. 2) The 230KV Possible OCC Subject to Grid 366 Chennai 230 KV SIRUSERI 230 KV Maintenance work Sun, 09-Apr-2017 10:00 Sun, 09-Apr-2017 17:00 1 Approved (129th OCC approved) KITS Park SS load will be fed by 230KV Taramani SS. 3) 110KV Sholinganallur SS load Appd.129/107 condition will be transferred to 230KV KITS PARK SS.

367 Erode 230 KV KUNDAH PH3 230KV PH3 - PH2 FEEDER For monthly maintenance work Both end open condition, MODS are open condition 0 Sun, 09-Apr-2017 8:00 Sun, 09-Apr-2017 17:00 1 0 Approved

230KV KPH2 Feeder to KPH3 Feeder Tower No:13-24 Pre-Monsoon Inspection 368 Erode 230 KV KUNDAH PH3 230KV KPH2 Feeder to KPH3 Feeder 230KV KPH2 Feeder to KPH3 Feeder 0 Sun, 09-Apr-2017 9:00 Sun, 09-Apr-2017 17:00 1 0 Approved work(PMI) and Maintenance work.

369 Chennai 230 KV KORATTUR 230 KV 230 KV Korattur-SPR feeder Jumper Tightness at various Location All other feeder will be in services Possible Sun, 09-Apr-2017 09:00 Sun, 09-Apr-2017 17:00 1 0 Approved

1).NEW STATION BATTERY CHARGER subject to the grid COMMISSIONING WORK..2).110KV PH5 TO PH6 DURING THE LC PERIOD UNITS 1& 2 WILL BE UNDER NOT S/B CONDITION.ALL 370 Erode 110 KV KUNDAH PH5 110KV STRUNG BUS ONLY possible Sun, 09-Apr-2017 10:00 Sun, 09-Apr-2017 13:00 1 and the load Approved FEEDER BUS ISOLATOR R PHASE JUMPER THE FEEDERS WILL BE FEED FROM OTHER END.. condition existing GLOW RECTIFICATION WORK AT BUS SIDE..

371 Chennai 230 KV KOYAMBEDU 230 KV 230 KV GIS FEEDER For SF6 Gas Leak attending work. 230 KV Load may be restricted within 230 KV SPR Feeder. Possible Sun, 09-Apr-2017 10:00 Sun, 09-Apr-2017 17:00 1 0 Approved

DURING THE PERIOD OF SHUTDOWN , EXCEPT 100 MVA AUTO TRANSFORMER-I 372 Chennai 230 KV TONDIARPET 230 KV 100 MVA AUTO TRANSFORMER-I FOR ROUTINE MAINTENANCE WORKS Possible Sun, 09-Apr-2017 09:00 Sun, 09-Apr-2017 13:00 1 0 Approved ALL OTHER FEEDERS AND EQUIPMENTS WILL BE IN SERVICE.

373 Chennai 230 KV KORATTUR 230 KV 230 KV NCTPS-SPR feeder Jumper Tightness at Various location All other feeder will be in services Possible Sun, 09-Apr-2017 09:00 Sun, 09-Apr-2017 17:00 1 0 Approved

Possible OCC 374 Chennai 400 KV Sriperumbudur 400 KV Auto-1,400/230kv,315MVA Monthly maintenance work During the period of shutdown Auto-2 & 3 will be in service Sun, 09-Apr-2017 09:00 Sun, 09-Apr-2017 17:00 1 0 Approved Appd. 129/138 230KV SOUTHERN BUS SECTION WEAK 1. 230KV TPT-BASIN BRIDGE & MANALI FEEDERS WILL NOT BE IN SERVICE.2. 100 375 Chennai 230 KV TONDIARPET 230 KV 230KV SOUTHERN BUS SECTION JUMPERS REPLACEMENT AND CLAMPS MVA AUTO TR-III WILL NOT BE IN SERVICE.3. 230KV LOAD TO BE RESTRICTED TO To be discuss Sun, 09-Apr-2017 06:00 Sun, 09-Apr-2017 17:00 1 0 Postponed TIGHTNESS CHECK. THTEE SOURCE FEEDERS.

GENERATI subject to the grid 376 Erode NG PUSHEP UNIT 2 MONTHLY MAINTENANCE WORK UNIT 2 IN SHUT DOWN CONDITION possible Sun, 09-Apr-2017 9:00 Sun, 09-Apr-2017 17:00 1 Approved condition existing STATIONS

During the above shutdown period 230KV Tharamani # will be feeding the entire KITS SS Possible with 230KV Siruseri # and 110KV Velachery # one 377 Chennai 230 KV KITS 230 KV For Quarterly maintenance work loads except 110KV Velachery # loads which will be transferred to 230KV Tharamani SS CBD Sun, 09-Apr-2017 07:00 Sun, 09-Apr-2017 15:00 1 0 Approved after another and 110KV Veerapuram # which will be in back charged condition concurrence

GUMMIDIPOONDI 230 Monthly maintenance work , CT clamp and bolt nuts During the period of shut down the 110KV Periyapalayam SS availing total shut down 378 Chennai 110 KV 110KV Periyapalayam feeder bay Possible Sun, 09-Apr-2017 10:00 Sun, 09-Apr-2017 17:00 1 0 Approved KV replacement work concurance to be obtained from JR metals EHT .

230KV KPH2 to KPH3 Feeder Tower No:25 to 35. 230 kv kph 3 to 379 Erode 230 KV KUNDAH PH3 230KV KPH2 to KPH3 Feeder Pre-Monsoon Inspection work(PMI) and Bus and Line both end open condition Earth switch closed condition. postponed Sun, 09-Apr-2017 9:00 Sun, 09-Apr-2017 17:00 1 kph 4 lc Approved Maintenance work. recommended

230KV KPH2 to KPH3 Feeder Tower No:13 to 24 110 kv kph 2 to 380 Erode 230 KV KUNDAH PH3 230KV KPH2 to KPH3 Feeder Pre-Monsoon Inspection work(PMI) and Bus and Line both end open condition Earth switch closed condition. postponed Sun, 09-Apr-2017 9:00 Sun, 09-Apr-2017 17:00 1 thudiyalur lc Approved Maintenance work. recommended

During the LC period 1) 110KV Kabilarmalai SS is proposed total shutdown,remaining 110KV Kabilarmalai Radial feeder 110KV Valavanthi SS, Villipalayam SS and 110 KV P.Velur SS load will be fed from sub to total s/d Approved Subject to 381 Madurai 110 KV PUGALUR 230 KV Monthly Maintenance work. POSSIBLE Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 Breaker,CTs line switch only 230KV SS Pudansandai via 110KV Valayapatty feeder. Concurance obtained from and load trnasfer load condition EE/O/Pudansanthai. there is No interruption to any SS. subject to the 382 Erode 230 KV MTPS MTPS-I to Salem 400 KV SS-II Monthly maintenance Programmed LC possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 other feeder Approved loading limit 110KV INGUR feeder breaker,CTs and Line subject to the load 383 Erode 110 KV THINGALUR 230 KV Monthly Maintenance Works The feeder will be back charged possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 Approved Isolators condition existing 230 Alandur # to 1) 230 KV Pasumalai - Alagarkoil # BKR & a)Maintenance Works of BKR & CT,LI b)Tree cutting 384 Madurai 230 KV PASUMALAI 230 KV EE / O / Alagarkoil has also programmed. POSSIBLE Mon, 10-Apr-2017 0:00 Mon, 10-Apr-2017 0:00 1 be in tied Approved CT,LI only. 2).Line Entire. works condition

1)Both end Breakers to be tripped2)Both end Bus and Line isolators to be opened3)Both sub to CKNI ICT 385 Madurai 230 KV TTPS 23KV TTPS-KNMLM FEEDER For maintenance work and MRT testing POSSIBLE Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 Approved end Earth switches to be closed condition loading

FOR ANNUAL RELAY TESTING WORK BT subject to the AUTO TRANSFORMER II HV,LV BREAKER 386 Erode 230 KV GOBI 230 KV P&C/GOBI AND FOR MONTHLY MAINTENANCE AUTO TRANSFORMER I AND III ARE IN SERVICE,IT MAY CATER THE LOAD. possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 other auto trs Approved AND CT'S WORK loading limit During the LO.C period the 230KV SUPPLY WILL BE FED FROM 230KV other feeder , 230 Alandur # to 230kv ALKL-Pasumalai # breaker CT,Line 387 Madurai 230 KV Alagarkoil230kv for monthly maintenance work other end also proposed L.C on the same date,hence there will be no interru8ption of POSSIBLE Mon, 10-Apr-2017 10:00 Mon, 10-Apr-2017 16:00 1 be in tied Approved CVT & Line entire supply please. condition subject to the 230 KV MTPS II # - Its CTs, BREAKER, BUS 388 Erode 230 KV Salem 400 KV Both end Monthly Maintenance Work Both end Monthly Maintenance Work possible Mon, 10-Apr-2017 8:00 Mon, 10-Apr-2017 14:00 1 other feeder Approved & LINE SWITCHES loading limit

230 KV AUTO TRANSFORMER II HV & LV FOR MONTHLY MAINTENANCE WORK.THE STATION LOADS WILL BE MANAGED 389 Madurai 230 KV then I 230 KV FOR MONTHLY MAINTENANCE WORK. POSSIBLE Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 13:00 1 0 Approved BREAKER WITH CT. OTHER TWO AUTO TRANSFORMERS.

CHECKANURANI SW During the LC period, no supply will be affected and all the 230KV Feeders fed through A- 390 Madurai 230 KV 230KV B-Bus Entire For Monthly maintenance works POSSIBLE Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 0 Approved STATION 230 KV Bus

During the LC period evacuation will be done through 230KV Valuthur - Kavanoor and 391 Madurai 230 KV VALUTHUR 230 KV 230KV Valuthur - Karaikudi feeder entire. Tree cutting work. POSSIBLE Mon, 10-Apr-2017 10:00 Mon, 10-Apr-2017 17:00 1 0 Approved Alagarkovil feeders

110 KV KAVANOOR-PARAMAKUDI # SEC. PMDI SS FED BY 110 KV KVNR-PMKDI # AND ILYNGDI & MRVMNGLM TOTAL S/D- 392 Madurai 110 KV KAVANOOR 230 KV BET. PARAMAKUDI TO ILAYANGUDI & LINE MAINTENANCE WORKS POSSIBLE Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 sub to total s/d Approved LOAD RELIEF 6.05 MW ACE/OPN/MDU APPROVAL MARAVAMANGALAM

On 230/110KV Auto Tf- 1 and its allied During the Lc period the Auto tr.f- 1 load will be Contained other Auto. Tr.f- 2 & 3.Hence sub to load 393 Madurai 230 KV KARAIKUDI 230 KV For Monthly Mtc work. POSSIBLE Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 Approved equipments. there will be interruption of supply. condiiton

On 110KV illayankudi # S/B illayangudi & During the Lc period the 110KV illayangudi SS & Maravamangalam SS under TSD. 394 Madurai 110 KV KARAIKUDI 230 KV For Tree Cutting Work. POSSIBLE Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 sub to total s/d Approved Maravamangalam. Hence there will be Interruption of Supply.

sub to CKNI ICT 395 Madurai 230 KV kinnimangalam 230 KV 230KV KNMLM - TTPS # Maintenance works of breaker,CT and Line No supply in the entire feeder POSSIBLE Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 Approved loading

During the LC period, (1) 110KV OKM-Thudiyalur I feeder loads will be transferred to 230 auto tr lc at Subject to OTHAKKAL MANDABAM 230/110 KV Auto Transformer-III (HV & LV For Annual relay testing work by GRT wing and KV TDLR SS (if necessary)(2) Already 110KV OKM-Thudiyalur II feeder fed from 230 KV 396 Erode 230 KV postponed Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 thudiyalur ss EE/SLDC/Erode 230 KV Breakers, CTs & LAS) monthly maintenance works. TDLR SS.(3) The remaining two Auto Transformers will be in service to cater the SS recommended approval loads.

DURING THE PERIOD OF SHUTDOWN , 50 MVA POWER TRANSFORMER-I WILL 50 MVA POWER TRANSFORMER-I &33 KV CBD Subject to SE/O 397 Chennai 230 KV TONDIARPET 230 KV FOR ROUTINE MAINTENANCE WORKS NOT BE IN SERVICE 33 KV TPT-II FEEDER LOAD TO BE TRANFRRED TO Mon, 10-Apr-2017 09:00 Mon, 10-Apr-2017 14:00 1 0 TPT-II FEEDER concurrence concurrence ALTERNATE FEEDING.

230 KV Eachangadu-Neyvely TS I # Breaker During the above shutdown period the 230 KV Eachangadu ss will be Radially fed from sub to Aldr ICT 398 Madurai 230 KV EACHANGADU 230 KV For monthly maintenance works POSSIBLE Mon, 10-Apr-2017 10:00 Mon, 10-Apr-2017 17:00 1 Approved & CT's 230KV Samayapuram ss. loading

During the LC period the feeder will be radial from SBT upto Nilakottai SS and radial from 110KV SBT - Theni II # sec. bet. Nilakottai sub to load 399 Madurai 110 KV SEMBATTY 230 KV Tree cutting work other end upto Eluvanampatti SS. Batlagundu SS will be transferred to Theni I #. Hence POSSIBLE Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 Approved and Eluvanampatti SS condiiton no interruption to any SS.

110Kv Kayathar - Anuppankulam sec b/w During the LC Period ,I.Kovilpatti SS will be radially fed from sub to load 400 Madurai 110 KV KAYATHAR 230 KV For Defective disc replacement work POSSIBLE Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 Approved KOvilpatti & duraisamypuram Anuppankulam,II.duraisamypuram SS wiil be radially fed from Kayathar. condiiton subject to transfer 110KV Thedavoor SS availing Total Shutdown. Goodamalai SS; Thammampatty SS and of loads to 401 Erode 110 KV DEVIAKURICHI 230 KV 110 KV Thammampatty Feeder Breaker, CTs For Monthly Maintenance work Mettala SS availing back feeding Supply from 230KV pudansandhai SS by closing series possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 Approved puthansanthai ss switch at110 KV Namagiripet SS towards Deviyakurichy side. feed 1)ICI- I in OFF condition 2)ICT- II in service for 230kv feeder loads3)230KV Singarapet Possible OCC 402 Chennai 400 KV Thiruvalam 400 KV ICT - I Maintenance work feeder may be hand tripped,if load on ICT-II reached above 280MW4)400kv ALAMATHY - Mon, 10-Apr-2017 09:00 Mon, 10-Apr-2017 16:00 1 0 Approved Appd. 129/140 I feeder in service from its main breaker thro 400KV Bus -I

403 Chennai 110 KV KORATTUR 230 KV 110 KV Avadi-SPR feeder Jumper Tightness at various location All other feeder will be in services Possible Mon, 10-Apr-2017 08:00 Mon, 10-Apr-2017 17:00 1 0 Approved

During the LC period, the 230KV IBPGL Feeder No.I will be in service for their evacuation TUTICORIN -SIPCOT On 230KV IBPGL feeder No.(II)breaker with a) For monthly maintenance work. b) For annual 404 Madurai 230 KV of power and no interruption in evacuation and the amount has been paid by M/s. IBPGL POSSIBLE Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 0 Approved 230 KV CTs only. relay test. and no other SS will be affected.

subject to the AUTO TRANSFORMER III HV III & LV III 405 Erode 230 KV UDUMALPET 230 KV FOR MONTHLY MAINTENANCE WORKS 3 AUTOS ARE IN PARALLEL . LOADS ARE SHARED WITH OTHER TWO AUTOS. possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 other auto trs Approved COMPLETE loading limit subject to the 406 Erode 230 KV THUDIALUR 230 KV 100MVA,Auto Transformer-III,HV-III & LV-III For Monthly Maintenance Work 100MVA Auto Transformer I & II Will be in Service possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 other auto trs Approved loading limit subject to the feeder being kept During LC period there is no SS will be affected since there is inter connected SS fed from 407 Erode 110 KV Udumalpet 110 KV Monthly Maintenance work possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 radial from Approved other end. Gudimangalam ponnapuram ss end subject to the Jubber cone tightness checking at MTPS 1 in 408 Erode 230 KV METTUR AUTO 230 KV 230 KV MTPS 1- K.R.Thoppur II feeder entire Programmed LC at MTPS 1- On 10.04.2017 possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 14:00 1 other feeder Approved K.R.Thoppur II Bay loading limit

110KV Sankaneri-SRputhoor feeder Breaker For monthly maintenance purpose & GRT Annual During the LC Period 110KV SRputhoor Supply Radialy upto 110KV Irrukkandurai SS. 409 Madurai 110 KV SANKANERI 230 KV POSSIBLE Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 14:00 1 0 Approved CTS&Lineswitches. Relay Testing purpose. Hence no SS will be affaected.

subject to tsd being reaized and 110 KV Arasur-Karamadai-I # Breaker and During the Line Clear period,1)110 KV Kaduvettipalayam SS under Total Shut down.2) 410 Erode 110 KV ARASUR 230 KV For Monthly maintenance work. possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 12:00 1 the feeder being Approved CTs. 110 KV Arasur-Karamadai-I feeder will be fed from 230 KV Karamadai SS. kept radial from karamadai ss end a)Preventive Monthly Maintenance work b) a) 110KV Vadugapatty is radial feeder. B) 110KV Vadugapatty,Pakkudy and On 110 KV Alundur - Vadugapatty Feeder 411 Madurai 230 KV ALUNDUR 230 KV Premonsoon inspection work and tree cutting work. Ammachatram SS avail Total shutdown. C) All other 110KV feeders will be in service. d) POSSIBLE Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 sub to total s/d Approved and Breaker. c) Relay Testing work. There will be no interruption of supply to any other feeders and SS. subject to sldc 110 KV Vinnavanur # SF6 Bkr, CTs & LINE During the LC period, 1. At 110KV Chengam SS line isolator towards Singarapet will be 412 Erode 110 KV Singarapet 110 KV Monthly maintenance work possible Mon, 10-Apr-2017 0:00 Mon, 10-Apr-2017 0:00 1 chennai Approved ISOLATOR kept opened by availing blink hence no interruption of supply concurrence

1. 110KV Sankari feeder will be radially fed from other end. 2. 110KV Mallasumathram subject to 413 Erode 110 KV SALEM AUTO 230 KV Monthly Maintenance work SS will be availing total shutdown or fed from 230KV Unjani SS through Paruthipalli possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 mallasamudram Approved Isolator feeder 3. There will be no interruption to any SS or Feeders ss availing tsd

subject to the load 414 Erode 230 KV INGUR 230 KV and Line side Isolator and 230 KV main Bus MONTHLY MAINTENANCE WORKS OTHER END ALSO AVAILED LC ON THAT DAY possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 14:00 1 Approved condition existing & Auxillary Bus switch

110 KV Kayathar - Papanasam # Breaker A) For Monthly Maintenance workB) For GRT Annual sub to ppm pwd 415 Madurai 110 KV KAYATHAR 230 KV During the LC period other end also avails LC hence no ss affected POSSIBLE Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 Approved with CT only Relay testing works demand

By AE/Lines/Thudialur to carry out the follwing works: i)Releasing and restringing 3 nos KUNDAH subject to the load 416 Erode 230 KV karamadai230KV 230KV Karamadai-Ingur feeder. conductor & 1 no of earth wire between Loc.171- LC programmed at other end also. possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 16:00 1 Approved condition existing 172ii)stringing of 3 nos Zebra conductor & 1 no earth wire between Loc.35-36

subject to the 417 Erode 230 KV METTUR AUTO 230 KV 230KV MTPS II FEEDER MONTHLY MAINTENANCE WORK DURING THE LC PERIOD OTHER230KV FEEDERS WILL BE IN SERVICE possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 other feeder Approved loading limit

1) 110KV Salem - Sankagiri feeder breaker kept hand tripped at Salem 230KV SS.2) 110KV Salem - Sankagiri feeder series switch at Veerapandy 110KV SS towards Salem 110KV Salem - Sankagiri feeder section will be kept opened.3) There will be no supply in 110KV Salem - Sankagiri feeder section subject to 418 Erode 110 KV SALEM AUTO 230 KV between Salem 230KV SS and Veerapandy Railway crossing jumpers checking. between Salem 230KV SS and Veerapandy 110KV SS.4) Veerapandy 110KV SS will be possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 mallasamudram Approved 110KV SS. radially fed from Sankagiri 110KV SS.5) Salem 230KV SS is availing breaker and line ss availing tsd switch LC on that day. 6) Mallasamudram 110KV SS will availing total shut down on that day.7) There will be no interruption of supply to any SS.

A)230KV TRANSFER BUS COUPLER A)FOR MONTHLY MAINTENANCE WORK BY BREAKER AND CT's.B)110KV N T KUDI- A)230KV FEEDERS ARE TIED CONDITION AND NO INTERRUPTION TO ANY AEE/MTC/N T KUDI AND ANNUAL RELAY TEST NEMALITHIPIYAKUDI MADUKKUR-THIRUMAKKOTTAI- SS.B)DURING THE LC PERIOD, 110KV MADUKKUR SS AND 110KV 419 Madurai 230 KV BY AEE/P&C/THANJAVUR.B)FOR PREMONSOON POSSIBLE Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 0 Approved 230 KV KOVILKALAPPAL FEEDER (LP: THIRUMAKKOTTAI SS RADIALLY FED FROM 230KV NT KUDI SS. C) NO INSPECTION WORK BY KOVILKALAPPAL TO 110KV INTERRUPTION TO ANY OTHER SS. AE/LINES/PATTUKKOTTAI THIRUMAKKOTTAI SS) 1)110KV Deviakurichi-Thammampatty Feeder breaker & CT's Maintenance availing subject to transfer 110KV Deviakurichi-Thammampatty Deviakurichi SS. 2)110KV Deviakurichi-Thammampatty Feeder series switch at of loads to 420 Erode 110 KV SALEM AUTO 230 KV Feeder(Section Between deviakurichi 230KV Road & Railway crossing jumpers checking. Gudamalai 110KV SS towards Deviakurichi side will be Kept Opened.3)110KV possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 Approved puthansanthai ss SS - Gudamalai 110KV SS) Deviakurichi-Thammampatty feeder will be radially fed upto Gudamalai 110KV SS from feed Pudhanchandai 230KV SS.4)There will be no interruption of supply to any SS.

1) To carry out Monthly maintenance by 110 KV Palladam - SIPCOT II feeder subject to transfer AEE/maintenance/Palladam2) To carryout During LC period 1). 110 KV Alagumalai SS availing Total shut down2) 110 KV 421 Erode 110 KV PALLADAM 230 KV breaker,CT's and Line side isolator with Line possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 15:00 1 of loads to ingur Approved Premonsoon inspection on line by Muthalipalayam SS will be fed from 230 KV Ingur3) No other Sub station will be naffected up to 110 KV Alagumalai SS ss feed AEE/Lines/Palladam

110KV Mettupalayam-madhampalayam PMI works in between Loc.90 and 134 by subject to the load 422 Erode 110 KV KARAMADAI 230 KV LC programmed at both end. possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 Approved feeder AE/Lines/Kattabettu condition existing 110 KV T(K)GTPS - Madukkur- NT Kudi During the LC period suply will be fed radially from 230 KV SS, NT Kudi upto 110 KV 423 Madurai 110 KV KOVILKALAPAL feeder (Line portion between T(K)GTPS and Breaker, CTs and line isolator maintenance works POSSIBLE Mon, 10-Apr-2017 10:00 Mon, 10-Apr-2017 16:00 1 0 Approved Thirumakkottai SS.No interruption to any SS. 110 KV Thirumakkottai SS) GENERATI other units will be 424 Erode NG PYKARA UNIT 1 FOR MONTHLY MAINTENANCE WORK NIL possible Mon, 10-Apr-2017 8:00 Mon, 10-Apr-2017 17:00 1 Approved available STATIONS

110KV ALR-SLR FEEDER NO-1 CB,CT AND Tower replacement work at LOC 33 TO 36 by 1)During the LC period SLR feeder no-II will caters the load2)line LC Programmed by other feeder will 425 Erode 110 KV ALIYAR 230 KV possible Mon, 10-Apr-2017 8:00 Wed, 12-Apr-2017 18:00 3 Approved LINE ENTIRE erecting temporary tower AE/TLC/UDT be in service

i. 110 KV Mosur Sub-station availing TSD work ii. The Railway I&II will be in service and 110 KV Mosur Link-I Feeder Breaker, CT & 426 Chennai 110 KV MOSUR 230 KV For attending monthly Maintanance work avail supply from 110 KV Mosur Link-II Feederiii Hence there will be no interruption of Possible Mon, 10-Apr-2017 09:00 Mon, 10-Apr-2017 14:00 1 0 Approved Line Isolators one by one supply ,

i. 110 KV Mosur Sub-station availing TSD work ii. The Railway I&II will be in service and 110 KV Mosur-LINK II Feeder Breaker, CT & 427 Chennai 110 KV MOSUR 230 KV For attending monthly Maintanance work avail supply from 110 KV Mosur Link-I Feederiii Hence there will be no interruption of Possible Mon, 10-Apr-2017 09:00 Mon, 10-Apr-2017 14:00 1 0 Approved Line Isolators one by one supply ,

During the LC period, (a) 110KV NSPM- KYTR feeder breaker will be kept in tripped a) New Breaker wiring and testing & commissioning ANUPPANKULAM 230 a) 110KV NSPM- KYTR # Breaker b) 110KV condition at NSPM SS. b) N.Subbiahpuram-Kayathar feeder will be radialy fed from other 428 Madurai 110 KV works. b) Swapping of 110 KV NSPM -KYTR line POSSIBLE Mon, 10-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 2 0 Approved KV NSPM- KYTR # Line upto Vijayapuri SS end upto 110 KV Viyajapuri SS. Hence No SS affected.Concurrence obtained from from existing bay to new bay. SE/VREDC/VDR.

1.No SS will be affected during the LC period2. 110KV Elumathur SS & 110KV Sivigiri SS 110KV Elumathur - Pugalur # section subject totsd relief to attend jumper tightness work at tower loc no:110 has programmed total shutdown on 10.04.20173.110KV Kodumudi SS Supply can be fed 429 Erode 110 KV INGUR 230 KV between 110KV Kodumudi SS & 110KV possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 14:00 1 in the Approved near othakadai from Pugalur 230KVSS4.110KV Nadupalayam SS supply can be fed from 110KV Erode Sivagiri SS and 110KV Nadu palayam SS interconnected ss SS

230KV KPH2 Feeder to KPH3 Feeder Tower No:01 subject to the load 430 Erode 230 KV KUNDAH PH3 230KV KPH2 Feeder to KPH3 Feeder to 12 Pre-Monsoon Inspection work(PMI) and Bus and Line both end open condition Earth switch closed condition. possible Mon, 10-Apr-2017 9:00 Mon, 10-Apr-2017 17:00 1 Approved condition existing Maintenance work. 230KV KPH3 Feeder to KPH4 Feeder Tower No 11 431 Erode 230 KV KUNDAH PH3 230KV KPH3 Feeder to KPH4 Feeder to 19 Pre-Monsoon Inspection work(PMI) and Bus and Line both end open condition Earth switch closed condition. 0 Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 0 Approved Maintenance work. 1) The sakthisugars feeder will be kept radial from Alkl end through 110KV Alagarkoil - Karaikudi Feeder feeding Uranganpatty SS, Nattarmanaglam and upto Nelmudikarai SS 2)The feeder will be radial from Sakthisugars feeding upto Arasanoor SS 3) At Nelmudikarai SS the switch towards Arasanoor SS will be kept opened and earthed.4) At 110KV Pasumalai - Sakthi Sugars # Section Approved Subject to 432 Madurai 230 KV PASUMALAI 230 KV Tree cutting Works Arasanoor SSthe switch towards Nelmudikarai SS will be kept opened and earthed. 0 Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 14:00 1 between Nattarmangalam and Arasanoor load condition 5)110KV Sakthisugar -Sivaganga Feeder will be in grid . 6)110KV Alagarkoil - Karaikudi Feeder will be radial from Karaikudi upto Narasingampatti SS. 7) At Narasingampatti SS the switch towards Alagarkoil will be kept open. 8) 110/33-11KV Nelmudikarai SS and Arasanoor SS will be under Shutdown.

Power transformer -II,HVBR-II,LVBR-II & During the lc period there will be no supply in entire power transformer -II & 33kvfeeders 433 Madurai 230 KV VEERANAM 230 KV Quertaly & Monthly maintenance work POSSIBLE Tue, 11-Apr-2017 10:00 Tue, 11-Apr-2017 17:00 1 sub to wind gen Approved 33kv feeders of Ramco, Windfarm, Enercon and concurrence obtained from SE/NCES/TIN.

During the period of shutdown 230/110KV, 100 MVA Auto Transformer II will be in 434 Chennai 230 KV THIRUVERKADU 230 KV 230/110KV, 100 MVA Auto Transformer I For routine monthly maintenance work Possible Tue, 11-Apr-2017 10:00 Tue, 11-Apr-2017 17:00 1 approved Approved service, hence no interruption

On 110KV Kodikurichi WF # breaker with CT 435 Madurai 110 KV kodikurichy230kv For Monthly Maintenance work. 110 Kodikurichi WF SS monthly shudown approved by SE/NCES/Tirunelveli. POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 sub to wind gen Approved and All isolators

On 110KV Kayathar -Arumuganeri feeder For a)Monthly maintenance work b)Tower to tower During the LC period, Palayamkottai SS will be radially fed from 110KV Arumuganeri SS. sub to load 436 Madurai 230 KV KAYATHAR 230 KV breaker Section between kayathar and POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 Approved inspection work Hence no SS affected. condition palayamkottai SS

1) 230 KV Pasumalai - Anupankulam # sub to load 437 Madurai 230 KV PASUMALAI 230 KV a)Maintenance Works of BKR & CT,LI EE / O / ANPKM has also programmed POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 14:00 1 Approved BKR,CT and LI only. condition

subject to the load 438 Erode 230 KV KUNDAH PH3 230 KV PH3 - PH4 FEEDER For monthly maintenance work Both ends open condition, MODS are open condition possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 Approved condition existing

sub to wind gen 1) During the LC period there will be NO supply in 230KV Kodi-1 #,Kodi-2 # and P.Tr- and no blocking of Amuthapuran 230KV Bus section-2 2,3&4. 2) P.Tr-1 fed from 230KV N.M.Patty # and Ckni #. 3) 230KV Kodi-1 #,Kodi-2 # wind gen. and 230 439 Madurai 230 KV AMUTHAPURAM 230 KV consisting of Kodi-1 #,Kodi-2 # and P.Tr- Routine Maintenance Work Radial from other end. 4) All 33KV feeders to be tied with P.Tr-1.Hence NO Wind POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 Approved Ckni-Ampm & 2,3&4 generation affected. 5) Hence NO SS will be affected. 6) Cocurrence obtained from Ckni-Nmpt # to be SE/NCES/TIN. in tied condition

FOR ANNUAL RELAY TESTING WORK BT subject to transfer 110 KV GOBI FEEDER BREAKER AND CT'S SUPPLY TO 110 KV GOBI SS MAY FED FROM 110 KB ANTHIYUR FEEDER BY 440 Erode 230 KV GOBI 230 KV P&C/GOBI AND FOR MONTHLY MAINTENANCE possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 of loads to Approved WITH LINE SWITCH CLOSING SERIES SWITCH IN 110 KV GOBI SS WORK anthiyur feeder

During the LC Period, 110KV Karur SS,is proposed total shutdown. The remaining 110KV 110 KV Pugalur - Karur Radial feeder sub to load 441 Madurai 110 KV PUGALUR 230 KV Monthly maintenance work., Tree cutting work. Manmangalam,110KV Veppampalayam SS load will be fed through 110KV POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 Approved Breaker, CTs and sec pglr and mnglam condition Renganathapuram feeder.Hence there is no supply interruption to any SS.

During the LC period, 110KV Pulilyur SS availing total shutdown and remaining 110KV 110KV Pugalur - Puliyur Feeder Breaker, CTs Thanthonimalai SS, Velliyanai SS Mayanur SS, Kaniyalampatty SS and Panjapatty SS sub to load 442 Madurai 110 KV PUGALUR 230 KV Monthly Maintenance Work POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 Approved and Line switch only load will be fed from 110KV Trichy SS via 110KV Ayyermalai SS.Hence there is no condition interruption to any SS.Concurrence obtained from EE/O/Trichy.

During the L.C period anpother one 100MVA AUTO II will be in serviceAND 2300& 110kv 100MVA AUTO I ,HV&LV breaker CT,LAS FEEDERS WILL BE IN GRID further 110KV INDUSTRIAL ESTATE & URANGANPATTY sub to load 443 Madurai 230 KV Alagarkoil230kv For monthly maintenance work. POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 14:00 1 Approved only SS will be under total shudown. further if necessary 110KV ALKL -SMPTY 2 # TIE WILL condition OPENED AT ALKL end hence there will be no interruption of supply please.

TUTICORIN -AUTO 230 On 110KV TTN-Sipcot-II feeder breaker with 444 Madurai 230 KV For monthly maintenance work . No SS will be affected. POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 0 Approved KV CT bus and line side switches To replace the flash over disc at loc.no.158,159,160 During the LC period , 110 KV Kanadamanur SS Load will be transferred to 110 KV CHECKANURANI SW 110 KV Kinnimangalam-Theni - I feeder 445 Madurai 110 KV and tower to tower inspection,tree cutting work in kinnimangalam - Theni -II feeder, Usilampatty 110 KV SS and Mondikundu 110 KV SS POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 0 Approved STATION 230 KV section between Valanthur to Theni various location. availing total shutdown .Hence there will be no supply interruption at any other SS.

PERIYAKULAM SS AND KODAIKANAL SS FOR LINE MONTHLY MAINTENANCE AND 446 Madurai 230 KV then I 230 KV SPUR LINE IN 110KV THENI-SEMPATTY II PERIYAKULAM SS AND KODAIKANAL SS PROPOSED UNDER TOTAL SHUT DOWN POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 0 Approved PREMONSOON INSPECTION WORK. #

110 KV THENI KINNIMANGALAM I FEEDER DURING THE LC PERIOD THE FEEDER WILL BE RADIAL FROM KINNIMANGALAM FOR LINE MONTHLY MAINTENANCE AND 447 Madurai 110 KV then I 230 KV SECTINO BETWEEN VALANTHUR AND UPTO VALANTHUR SS. 110 KV MONDIKUNDU,USILAMPATTI SS AVAILING TOTAL POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 0 Approved PREMONSOON INSPECTION. THENI. SHUTDOWN.

NALLAPPANAYAKANPA 110 KV KODIKURUCHI FEEDER BREAKER 110 KV KADAYANALLUR SS AND 11O KV ACHANPUDUR SS WILL BE REDIALLY FED 448 Madurai 110 KV For monthly maintenance work POSSIBLE Tue, 11-Apr-2017 10:00 Tue, 11-Apr-2017 14:00 1 0 Approved TTY 230 KV WITH CT ONLY FROM 230 KV KODIKURUCHI SS

MONTHLY MAINTENANCE WORKS AND LINE 449 Madurai 230 KV KAVANOOR 230 KV 230 KV KAVANOOR-VALUTHUR # SINCE BOTH ENDS LC TO BE AVAILED NO SUPPLY IN THE FEEDER POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 0 Approved MAINTENANCE WORKS

230KV Deviakurichy feeder CB, CTs, CVTs, During LC period230KV Bus-A now idly charged through Bus Coupler CB & CTs will be 230 kv taqa to PUDHANCHANTHAI 230 450 Erode 230 KV Wave Traps and 230KV Swithces.230KV Bus- For regular maintenance works. hand Tripped.230KV Unjanai and Pugalur feeders will be kept tied with grid.No supply possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 dvki feeder to be Approved KV A side Switch of Deviakurichy feeder. interruption. in tied condition

On 110KV KKDI - VLDR #'r S/B A.Pudur and During the Lc Period the #'r will be tied with Grid through 110KV DVKT #'r. Hence there 451 Madurai 110 KV KARAIKUDI 230 KV Flashed over Disc replacement work. POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 0 Approved Tvdi. will be No interruption of Supply.

110KV KNMLM - THENI 1 section between The feeder will be radial from KNMLM upto valanthur SS. 110KV Mondikundu,usilampatti 452 Madurai 110 KV kinnimangalam 230 KV Line maintenance work POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 repeat Approved valanthur and theni SS availing total shutdown

110KV Kadalangudy- Mayiladuthurai feeder 1)Line inspection and rectification work No interruption to any SS. 110KV Mayiladuthurai SS proposed to shutdown. All other 453 Madurai 110 KV KADALANGUDI 230 KV POSSIBLE Tue, 11-Apr-2017 10:00 Tue, 11-Apr-2017 16:00 1 0 Approved entire 2)Maintenance work feeders will be in tied condition at KGTPS plant and Kadalangudy SS.

Auto Transformer -II-HV and LV side.Its subject to the PALLAKAPALAYAM 230 Monthly Maintenance and Rectify the defect in Bus I 454 Erode 230 KV entire Transformer ,LAS,CT's,Breakers Auto I Transformer will be manage the load possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 other auto tr Approved KV Isolator &switches and 230KV Bus I loading limit

During the LC period a) other 2 nos. 100MVA Auto Transformer will be in service. b) 100MVA Auto Transformer I, LV I BR, HV & 455 Madurai 230 KV TRICHY 230 KV 0 There will be no interruption of supply to any of the SS and feeders. C) Necessary POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 0 Approved LV LAS, LV CTs and Isolators. concurrence obtained from SE/O/Trichy.

subject to the 456 Erode 110 KV METTUR DPH 110 KV AUTO SS FEEDER 2 MONTHLY MAINTENANCE WORKS THE OTHER END WILL BE IN SERVICE. possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 15:00 1 other feeder Approved loading limit

subject to transfer OTHAKKAL MANDABAM 110 KV OKM-R.S.Puram I Feeder (Breaker, for annual relay testing work by GRT wing and During the LC period, 110 KV OKM-R.S.Puram I feeder loads will be transferred to 110KV 457 Erode 110 KV possible Tue, 11-Apr-2017 0:00 Tue, 11-Apr-2017 0:00 1 of loads to feeder Approved 230 KV CT's & Line Switch) monthly maintenance works. OKM-R.S.Puram II feeder. Hence, No SS will be affected. 2

OTHAKKAL MANDABAM 110 KV OKM-R.S.Puram I Feeder (Breaker, for annual relay testing work by GRT wing and During the LC period, 110 KV OKM-R.S.Puram I feeder loads will be transferred to 110KV 458 Erode 110 KV 0 Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 14:00 1 repeat of 52988 Not considered 230 KV CT's & Line Switch) monthly maintenance works. OKM-R.S.Puram II feeder. Hence, No SS will be affected.

110V SBT - THENI I # Bkr, CTs and sec. bet. During the LC period, the feeder will be radial from other end upto Ayyampalayam SS. 459 Madurai 110 KV SEMBATTY 230 KV 1. Monthly maintenance work2. Tree cutting work POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 0 Approved SBT and Ayyampalayam SS Hence no interruption to any SS.

subject to the 230 KV MYVADI - UDUMALPET LINK - 1 460 Erode 230 KV Udumalpet 400 KV MONTHLY MAINTENANCE WORK BOTH END AVAIL LC possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 other link feeder Approved FEEDER BREAKER, CT AND LINE ENTIRE loading limit 230 kv taqa to 461 Erode 230 KV DEVIAKURICHI 230 KV For Monthly Maintenance work 230 KV Deviakurichy- STCMS & Singapuram Feeders will be in service possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 dvki feeder to be Approved Breaker, CTs, and Line side isolator both end in tied condition

110 KV Arani Kaveripakkam Feeder Breaker, For Monthly Maintenance work, CT Clamp, and Bolt During the Period of Shut down the 110KV Thimiri SS availing Total Shut down.Hence 462 Chennai 110 KV ARNI 230 KV Possible Tue, 11-Apr-2017 09:00 Tue, 11-Apr-2017 14:00 1 approved Approved 110KV CTs, Line Isolator Nuts replacement work. there will be no interruption of Supply.

463 Chennai 110 KV KORATTUR 230 KV 110 KV Avadi-SPR feeder Jumper tightness at various location All other feeder will be in services Pending Tue, 11-Apr-2017 09:00 Tue, 11-Apr-2017 17:00 1 Approved

464 Chennai 230 KV SPKoil 230 KV Kalapakkam feeder 2 Quartely Maintenance Work Pending Tue, 11-Apr-2017 09:00 Tue, 11-Apr-2017 17:00 1 Approved

programmed 230/110KV Auto Transformer I, HV-I; LV-I 1)Monthly maintenance work 2)Transformer No interruption to any SS. The 230KV PPN- Thiruvarur feeder will be in tied condition. NOT 465 Madurai 230 KV KADALANGUDI 230 KV Tue, 11-Apr-2017 10:00 Tue, 11-Apr-2017 16:00 1 along with total Not approved and 230KV & 110KV LAS. Differential Protection relay fixing work. The 110KV Jayankondam and Papakudy SS loads transferred to Neively TS I. POSSIBLE s/d

App in 129 466 Madurai 400 KV kamuthi 400 KV Kanarpatty 400/230 KV ICT -II MONTHLY MAINTENANCE WORK NO FEEDER IS IN SERVICE 230 KV AND NO EQUIPMENT AFFECTED POSSIBLE Tue, 11-Apr-2017 10:00 Tue, 11-Apr-2017 17:00 1 Approved occ/146

subject to the 230KV MYVADI LINK I FEEDER BREAKER DURING THE LC PERIOD 230KV MYVADY LINK II FEEDER WILL CATER THE 230 KV 467 Erode 230 KV UDUMALPET 230 KV FOR MONTHLY MAINTENANCE WORKS possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 other link feeder Approved &LINE ENTIRE MYVADY LINK I FEEDER loading limit subject to During LC period there is no SS will be affected since there is inter connected SS fed from devanurputhuir ss 468 Erode 110 KV Udumalpet 110 KV Monthly Maintenance work possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 Approved line. between Udt and Devanoorputhur SS other end. being fed from aliyar ss subject to transfer 110 KV Ponnapuram # Breaker & CTs & Line 1. THE 110KV PONNAPURAM SS FEEDING WILL BE CHANGED TO 110KV PNPM- of ponnapuram ss 469 Erode 110 KV PONNAPURAM 230 KV FOR MONTHLY MAINTENANCE WORKS possible Tue, 11-Apr-2017 10:00 Tue, 11-Apr-2017 17:00 1 Approved entire INGUR-II #2.HENCE NO SS WILL BE AFFECTED. loads to ingur feeder 2 During the shutdown period,1) 110 KV Ramiyanahalli SS programmed to avail total subject to 110 KV Ramiyanahalli # Breaker, CTs & line To carry monthly maintenance work by shutdown 2) 110 KV Harur SS and 110 KV Pappireddipatti SS loads will be fed from 230 470 Erode 110 KV SINGARAPET 230 KV possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 15:00 1 ramiyanahalli ss Approved isolators AEE/MTC/230 KV SS / SPT KV SS Karimangalam through 110 KV Karimangalam - Ramiyanahalli #hence no availing tsd interruption of supply.

During the period of LC, 1) Auto transformer II and LV II breaker will be in off condition 3) The Auto transformer I and III will be in service,4) 110 KV Ramiyanahally SS total subject to the To carry monthly maintenance work by 471 Erode 230 KV SINGARAPET 230 KV Auto transformer II & LV II Breaker shutdown approved and 110KV Harur SS & Pappireddipatty SS loads will be fed from possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 15:00 1 other auto trs Approved AEE/MTC/230 KV SS / SPT Karimangalam SS.5). The 110KV Tirupattur, Link I and Link II feeders will be in loading limit servicehence no interruption of supply

472 Madurai 230 KV SAMAYAPURAM 230 KV 230KV Bus Coupler Breaker & isolotors (idle) Monthly Maintenance Work No Interruption POSSIBLE Tue, 11-Apr-2017 10:00 Tue, 11-Apr-2017 17:00 1 0 Approved

230/110KV AutoTransformer-I HV&LV For monthly maintenance purpose & GRT Annual During the LC Period AutoTransformer-I willnot beinservice.AutoTransformer-II willbe 473 Madurai 230 KV SANKANERI 230 KV POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 14:00 1 0 Approved Breaker CTS&Lineswitches. Relay Testing purpose. Carriedout the Entire Load. subject to the 230/110 KV Autotransformer - III, HV-III, LV- During the Line Clear period,1)110 KV Somanur SS and 110 KV Ichipatty SS under total 474 Erode 230 KV ARASUR 230 KV For Monthly maintenance work. possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 16:00 1 other auto trs Approved Shut down.2)The remaining loads will be managed by three numbers auto transformers. loading limit

subject to 475 Erode 110 KV ARASUR 230 KV For Monthly maintenance work. During the Line Clear period,110 KV Somanur SS under total Shut down. possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 12:00 1 somanur ss Approved and Its CTs availing tsd

a)Monthly Preventive Maintenance work. 230KV Alundur - Thanjavur-I Feeder Breaker, During the LC period, a)Other end also avail shutdown. b)All other 230 KV feeders will be NOT Along with total 476 Madurai 230 KV ALUNDUR 230 KV b)Premonsoon Inspection and tree cutting work. Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 16:00 1 Not Approved CT's, CVT's and Line Isolators. in service. c)There will be no interruption of supply to any other feeders. POSSIBLE s/d c)Relay Testing Work.

400KV Kamudhi feeder Main Breaker (409- During the LC period there will be no supply in 400KV Kamudhi feeder Main Breaker (409- App in 129 477 Madurai 230 KV kayathar230kv 52), Reactor Breaker (409-52R), Reactor & Monthly Maintenance work POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 Approved 52), Reactor Breaker (409-52R), Reactor & CT only.hence no substation affected. occ/147 CT only

subject to the load 478 Erode 110 KV INGUR 230 KV MONTHLY MAINTENANCE WORKS DEPENDING UPON LOAD CONDITION possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 14:00 1 Approved and earth switch condition existing

SLDC selection 479 Madurai 110 KV kamuthi 400 KV 110 kv Manur # Breaker and ct only monthly maintenance work 110 kv manur ss monthly shutdown alerady proposed on this date no ss affected Possible Tue, 11-Apr-2017 10:00 Tue, 11-Apr-2017 17:00 1 Approved not in order

Can be availed in a.For replacement of damaged fixed jaw contacts in Possible with a.110kv Bus Section-2&3 will be in service and 110kv supply to M/s MPL will not be 1st week so as to 480 Chennai 110 KV MANALI 230 KV 110kvBus Section-1 110kv Bus Coupler-1 switch in 110kv Bus Section- EHT Tue, 11-Apr-2017 10:00 Tue, 11-Apr-2017 17:00 1 Approved available have import in 1b.Routine Maintenance works concurrence ETPS1

1) For monthly maintenance works by the programmed 230 KV Thanjavur - Alundur-1 feeder, During the LC period,1) other end also will avail LC on the same day,2) all other 230 KV NOT Subject to EE/SLDC/ 481 Madurai 230 KV THANJAVUR 230 KV AEE/Mtce/Thanjavur,2) For carrying out premonsoon Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 along with total breaker, CT & LI. feeders will be in tied condition,3) no supply interruption to any SS. POSSIBLE Madurai approval inspection works by the AEE/Lines/Thanjavur. s/d

110KV PATTUKKOTTAI-MADUKKUR FEEDER (VIA: 110/11KV PATTUKKOTTAI NEMALITHIPIYAKUDI FOR PREMONSOON INSPECTION WORK BY 1) 110KV LINE ISOLATOR (NO.2) TOWARDS PATTUKKOTTAI ALREADY OPENED AT 482 Madurai 110 KV URBAN SS), LINE PORTION BETWEEN POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 0 Approved 230 KV AE/LINES/PATTUKKOTTAI. 110 KV MADUKKUR SS.2) NO INTERRUPTION TO ANY SUBSTATION. 110KV PATTUKKOTTAI URBAN SS TO 110KV MADUKKUR SS. 1)230KV Deviakurichi-Pudhanchandai Feeder breaker & CT's Maintenance availing Both 230 kv taqa to 230KV Deviakurichi-Pudhanchandai Entire 483 Erode 230 KV SALEM AUTO 230 KV Road & Railway crossing jumpers checking. SS. 2)230KV Deviakurichi-Pudhanchandai Feeder series switch Both side will be Kept possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 dvki feeder to be Approved Feeder Opened.3)There will be no interruption of supply to any SS. in tied condition 230KV Perambalur-TAQA feeder breaker During the above period of shut down 1) 230KV Perambalur SS will be radially fed from NOT Due Aldr ICT Subject to EE/SLDC/ 484 Madurai 230 KV PERAMBALUR 230 KV For monthly maintenance work Tue, 11-Apr-2017 10:00 Tue, 11-Apr-2017 16:00 1 CT's wave trap & Line Isolater. 230KV Trichy SS POSSIBLE loading Madurai approval

485 Chennai 230 KV ATHIPET 230 KV 230KV Bus-II & Bus coupler switch. Routine Maintenance work 1. Bus-I will be in service2. All other feeders will be in service. Possible Tue, 11-Apr-2017 11:00 Tue, 11-Apr-2017 17:00 1 approved Approved

GENERATI UNIT-III GENERATTOR SF6 BREAKER, SLDC selection 486 Erode NG KUNDAH PH2 POWER TRANSFORMER AND ITS FOR MONTHLY MAINTENANCE WORK SF6 BREAKER OFF IN CONDITION TOP AND BOTTOM BUS OPEN IN CONDITION Possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 Approved not in order STATIONS ACCESSIORIES

other two feeders 487 Erode 110 KV METTUR AUTO 230 KV 110KV Malco II Feeder For Monthly maintenance work During the LC period 110KV Malco I & III Feeder will be in service possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 Approved will be in service During the above LC Period there will be no interruption,since the line has been kept ideal charge condition. The concurrence of the Superintending Engineer/KEDC/Krishnagiri , 488 Erode 110 KV HOSUR 230 KV 110 KV Guruparapalli Breaker&entire line. 1.For monthly maintenance work. possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 14:00 1 idly charged Approved Superintending Engineer/Operation/Thiruvalam , and Chief Engineer/Distribution/Vellore has been obtained. subject to the 230/110KV, 100MVA Auto Transformer III, 489 Erode 230 KV THUDIALUR 230 KV For monthly mtce works Auto Trnaformer I & II will be in service possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 17:00 1 other auto trs Approved HV-III, LV-III loading limit

During the above LC Perid there will be no interruption ,since the line has been kept in 110KV Hosur -Gurubarapally feeder(Both 1For monthly line maintenanance work, 2)Both 490 Erode 110 KV HOSUR 230 KV ideal charge conditon.The concurrence of CE/D/Vellore ,SE/O/TvLM,SE/KEDC/Krishnagiri 0 Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 14:00 1 repeat of 53662 Not considered Circuit I & II) circuit I & II has been obtained

Durind the period of LC The 110 KV Semmankuppam SS,110 KV BMutlur SS,110 KV Chidambaram SS,110 KV Panruti rural SS and chiththarasurSS will be availing total GCC/Trichy wing work KfW fund Augmentation Replacing the Existing Twin Kunda strung bus by 491 Chennai 110 KV CUDDALORE 230 KV 110 KV Main strung Bus section (South side ) opened at cuddalore end. The Chemplast EHT loads only fed from 110 KV Lanco IPP. Possible Tue, 11-Apr-2017 09:00 Tue, 11-Apr-2017 17:00 1 approved Approved Twin MOOSE in 110 KV Main strung Bus section Nallaththur and sornavur load will be transferred to 110 KV Neyveli paruti radial feeder (South side ) Capacitor bank side Auto transformers II will be in service.Hence NO Interruption of SupplyConcurrence obtained from SE/O/Villupuram

The 110 KV Semmankuppam SS,110 KV BMutlur SS,110 KV Chidambaram SS,110 KV Panruti rural SS and chiththarasurSS will be availing total shutdown.( load relief for the

492 Chennai 230 KV CUDDALORE 230 KV For monthly maintenance works Chemplast EHT loads only fed from 110 KV Lanco IPP. Nallaththur and sornavur load will Possible Tue, 11-Apr-2017 09:00 Tue, 11-Apr-2017 17:00 1 0 Approved transformer -III Breaker with CT's one by one. be transferred to 110 KV Neyveli paruti radial feeder Auto transformers II will be in service.Hence NO Interruption of SupplyConcurrence obtained from SE/O/Villupuramuramneer / Shift / Cuddalore During the period of LCi. 110 KV Arani - Kaveripakkam line LC in between from 110 KV For attending arcing horn tightness checking work & 493 Chennai 110 KV THIRUVALAM 230 KV 110 KV Arani - Kaveripakkam feeder entire. Timiri SS to 110 KV Kaveripakam SS.ii. 110 KV Timiri SS is availing total Possible Tue, 11-Apr-2017 09:00 Tue, 11-Apr-2017 14:00 1 0 Approved EHT Line Maintenance Works. Shutdown.Hence there will be no interruption of supply please. 110 KV Mosur-Denny Feeder BREAKER & 494 Chennai 110 KV MOSUR 230 KV For attending monthly maintanance work IDLY Charged feeder Possible Tue, 11-Apr-2017 09:00 Tue, 11-Apr-2017 14:00 1 0 Approved CT,S

a)110 KV APKM - Rajapalayam I feeder section between 110 KV Alangulam SS to During the LC period, a) section between Alangulam to Rajapalayam SS in RJPM-I feeder ANUPPANKULAM 230 110 KV Rajapalayam SS. b) 110 KV APKM - a) & b) Earth wire cut rectification work at Loc. No. 495 Madurai 110 KV will be no supply. B) 110 KV Reddiapatty SS to Rajapalayam SS in RJPM-II feeder will be POSSIBLE Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 15:00 1 0 Approved KV Rajapalayam II feeder section between 110 95 to 98 no supply.Hence No SS affected. KV Reddiapatti SS & 110 KV Rajapalayam SS. 100MVA Auto Transformer I & 110KV 496 Chennai 230 KV VILLUPURAM 230 KV For monthly maintenance works Auto T/R-II will be in service Possible Tue, 11-Apr-2017 09:00 Tue, 11-Apr-2017 17:00 1 0 Approved Southern Bus For replacement of Insulators loc no.210.and for tightening of jumpers between 497 Chennai 110 KV VILLUPURAM 230 KV 110KV VPM-T.V.Nallur # For monthly maintenance work. Possible Tue, 11-Apr-2017 09:00 Tue, 11-Apr-2017 17:00 1 0 Approved Villupuram to T.V.Nallur in the Line.(T.V.Nallur SS availing total shutdown 230KV Shoolagiri and 110KV Hosur feeder breakers will be hand tripped. Bus side & Line 1. occ approved; GURUPARAPALLI 230 230KV Shoolagiri Feeder Breaker, 110KV Monthly maintenance works in 230KV Shoolagiri 498 Erode 230 KV side isolators of 230KV Shoolagiri & 110KV Hosur will be opened as per instruction of 1 & 2 possible Tue, 11-Apr-2017 9:00 Tue, 11-Apr-2017 14:00 1 2. subject to the Possible KV Hosur feeder Breaker feeder breaker and 110KV Hosur feeder breaker CE/D/Vellore with concurrence of SE/O/Thiruvalam & SE/KEDC/Krishnagiri. tsd being realized

499 Chennai 230 KV Orgadam 230 kV 230KV Sriperumbudur# MONTHLY MAINTENANCE WORK Possible Tue, 11-Apr-2017 09:00 Tue, 11-Apr-2017 17:00 1 0 Approved

1)110 KV Pasumalai -( Tirumangalam) - Kinnimangalam 3 # BKR & CT,LI only. 2)Line 1) Feeder will be kept radial from Kinnimangalam upto Kapplur SS Line links feeding 500 Madurai 110 KV PASUMALAI 230 KV 1) Maintenance Works of BKR & CT, LI only. . 0 Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 14:00 1 Approved LC in section between Pasumalai and Tirumangalam and .Kapplur SS 2) Hence No interruption of Supply to any SS Kappalur SS.

(a) During the L.C period Unit - 1 or Unit - 2 any one unit will be inservice, other unit will 110 kv BPH - I to BPH - II Feeder, Line side Monthly maintenance works in Feeder equipment subject to the load 501 Erode 110 KV LOWER METTUR 1 be standby condition.(b) The other end BPH - 2 applied L.C on that day on 12.04.2017(c) possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 16:00 1 Approved isolator and Earth switch and its isolator and Earth switch condition existing 110 kv BPH - 1 to DPH Feeder will be inservice.

1.230 KV Veerapuram - S.P.KOIL Feeder will be in service2.110 KV Veerapuram - 502 Chennai 230 KV VEERAPURAM 230 KV 230 KV Veerapuram Kalivanthapattu feeder Quarterly Maintenance(OCC APPROVED) approved Wed, 12-Apr-2017 09:00 Wed, 12-Apr-2017 14:00 1 0 Approved S.P.KOIL Feeder I&II kept tied condition Possible OCC 503 Chennai 400 KV Alamathy 400 KV 400 KV SVC I & II TIE BREAKER ONLY For Tandelta of CT and isolator allignment work. 400 KV SVC I&II feeders will be in service via main circuit breakers.Hence no interuption. Wed, 12-Apr-2017 10:00 Wed, 12-Apr-2017 17:00 1 0 Approved Appd. 129/153

subject to the load 504 Erode 230 KV MTPS MTPS-I to Salem 230KV Feeder Monthly maintenance work Programmed LC possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 Approved condition existing

On 230KV Kayathar - Abishegapatti feeder a) For monthly maintenance work. b) Tower to tower App in 129 505 Madurai 230 KV KAYATHAR 230 KV During the LC period, there will be no supply in the entire feeder. Hence no SS affected. POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 Approved breaker with CT & entire line. inspection. occ/128

110 KV ADHANAKKOTTAI SS, 110 KV GANDARVAKOTTAI SS, AND 110 KV MALAIYUR SS IN 110 KV ADHANAKKOTTAI FEEDER AVAILING TOTAL SHUT DOWN. AUTO II, HV II, LV II AND 110 KV AUTO II,HV II,LV II,BREAKER, ISOLATORS AND 110 KV ALIYANILAI SS IN 110 KV ALANGUDY EID PARRY FEEDER AVAILING TOTAL 506 Madurai 230 KV PUDUKOTTAI 230 KV ADHANAKKOTTAI FEEDER LINE PORTION EHT LINES MAINTENANCE AND GRT TESTING SHUT DOWN. 110 KV SIPCOT SS AND 110 KV KONNAIYUR SS IN 110 KV SIPCOT POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 Sub to Total s/d Approved BETWEEN 230 KV SS AND MALAIYUR SS WORKS FEEDER ALSO AVAILING TOTAL SHUT DOWN.110 KV SUPPLY FOR VADAKADU SS IS TO BE BACK FED THROUGH 110 KV ALANGUDY EID PARRY FEEDER AND HENCE THERE WILL BE NO INTERUPTION OF SUPPLY TO ANY SS.

Sunguvarchatram 400 During the LC Period 315MVA 400/230KV Auto Transformer-2 in OFF Condition and Auto Possible OCC 507 Chennai 400 KV 315 MVA,400/230KV,Auto Transformer-2 Monthly maintenance work Wed, 12-Apr-2017 09:00 Wed, 12-Apr-2017 17:00 1 0 Approved KV Transformer 1 will cater the load of Auto Transformer -2. Appd. 129/155

subject to 110 KV ERODE - SWTP FEEDER BREAKER MONTHLY MAINTENANCE WORK AND DURING LC PERIOD 110 KV SURIYAMPALAYAM 110/22 KV SS UNDER TOTAL 508 Erode 110 KV Erode 110 KV possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 15:00 1 suriyampalayam Approved ,CT AND LINE SIDE. RELEASING OF HANGING TYPE Wave trap SHUTDOWN. NECESSARY CONCURENCE OBTAINED FROM SE/EEDC/ERODE. ss availing tsd

110KV PRIYAR-K.G.PATTY FEEDER DURING THE LC PERIOD 110 KV PERIYAR-KG PAATY FEEDER RADIAL FROM sub to load 509 Madurai 110 KV PERIYAR BREAKER WITH CT AND LINE SIDE AB ANNUAL MAINTENANCE WORK KAYATHAR END UPTO KG PATTY SS. IN KG PATTY SS 110KV AB SWITCH POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 13:00 1 Approved condition SWITCHES TOWARDS PERIYAR KEPT OPENED. HENCE NO SS WILL BE AFFECTED. On 100 MVA Auto Tr II, LV II, HV II breaker & 510 Madurai 230 KV SRPUDUR 230 KV Monthly Maintenance work. During the LC period Auto Tr I & III will be in service. POSSIBLE Wed, 12-Apr-2017 10:00 Wed, 12-Apr-2017 14:00 1 Sub to wind gen Approved CT only.

1) on 110KV Kodikurichi-Veerasigamani-II # During LC period, i) 110KV Veerasigamani SS and 110 KV Puliangudi SS will be fed from section between Puliyangudi SS- 110KV 1)For replacement of defective insulator at location 110KV -Kodikurichi- Veerasigamani -1 # by closing AB Switch towards Veerasigamani at Narayanapuram SS 2) On 110KV Kodikurichi No:51 .2) For Replacement of defective Insulator at Echantha SS end. ii)110 KV Naranapuram SS and Visvanathaperi SS will be fed from 511 Madurai 110 KV KODIKURICHY 230 KV -Kadayanallur - Nallamanayakan patti (DC POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 Sub to wind gen Approved location no9,22, 23,&46 (NAR-VISW) Location 110 Nallmanaickenpatty SS by closing the isolator at Nallamanaickenpatty SS end . Line) feeder section between 110KV No.25,35,36 &43 (KDNR-PULI) iii)110KV Achanpudur SS and Kadayanallur SS will be radially fed from 230KV Kadayanallur SS - 110 KV Kodikurichi SS. Hence, no SS will be affected. Nallamanayakanpatti SS.

FOR ANNUAL RELAY TESTING WORK BT 230 KV PALLAKAPALAYAM FEEDER 230 KV ARASUR FEEDER,230 KV ANTHIYUR FEEDER AND 230 KV MTPS II FEEDER subject to the load 512 Erode 230 KV GOBI 230 KV P&C/GOBI AND FOR MONTHLY MAINTENANCE possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 Approved BREAKER AND CT'S WITH LINE SWITCH ARE IN SERVICE,IT MAY CATER THE LOAD,OTHER END MAY ALSO AVAIL LC. condition existing WORK

During the LC period,the 110KV Malaikovilur and 110KV Pallapatty are proposed total 110KV Pugalur - Renganathapuram feeder shutdown,the remaining 110KV AC Playam,110KV Thalapatty ss load fed from 230KV 513 Madurai 110 KV PUGALUR 230 KV Breaker, CTs & line switch and entire line Monthly maintenance work POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 0 Approved Rengnathapuram SS. there will be no supply interruption in any 110KV SS. Concurrance only obtained from EE/O/Renganathapuram.

110KV Pugalur-Link feeder Breaker,CTs,Line During the L.C period, 110 KV Pugalur SS proposing total shut down and concurrence 514 Madurai 110 KV PUGALUR 230 KV For Monthly maintenance work . POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 0 Approved switch and line entire only was obtained from EHT consumer M/s. EID Parry/Pugalur

CHECKANURANI SW For Monthly maintenance works and Line 515 Madurai 230 KV 230KV CKNI-Kinnimangalam Feeder Entire During the LC period, there will be no supply in the entire feeder POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 0 Approved STATION 230 KV Maintenance works

230 KV THENI-SEMPATTY # BREAKER CT FOR MONTHLY MAINTENANCE AND 516 Madurai 230 KV then I 230 KV NO SUPPLY CONDITION.(OTHER END LC) POSSIBLE Wed, 12-Apr-2017 0:00 Wed, 12-Apr-2017 0:00 1 0 Approved AND ENTIRE LINE. PREMONSOON INSPECTION WORK.

517 Madurai 230 KV kinnimangalam 230 KV 230kv KNMLM - CKNI I # Maintenance works of Breaker and CT There will be no supply in the entire feeder POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 13:00 1 0 Approved subject to equal PUDHANCHANTHAI 230 During LC period110KV West and East Bus feeders will be fed by Auto-I and Auto-II 518 Erode 110 KV 110KV Bus Coupler CB and CTs. For regular maintenance works. possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 15:00 1 division of loads Approved KV respectively separately.No supply interruption. only PALLAKAPALAYAM 230 230KV Gobi Feeder CT,Breaker and subject to the load 519 Erode 230 KV Monthly Maintenance Both end LC avail on that day possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 Approved KV Switches condition existing 1)110 KV Pasumalai -( Tirumangalam) - 1) Feeder will be kept radial from Kinnimangalam upto Kapplur SS Line links feeding Kinnimangalam 3 # BKR & CT,LI only. 2)Line 1) Maintenance Works of BKR & CT, LI only. 2)Tree 520 Madurai 110 KV PASUMALAI 230 KV Tirumangalam and .Kapplur SS 2) Hence No interruption of Supply to any SS3) Kappalur POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 14:00 1 0 Approved LC in section between Pasumalai and clearance works . SS will be under shut down Kappalur SS.

Sub to load 1)During LC period 230/110KV Auto Transformer I (100MVA)will be in service and cater 1)230/110KV Auto Transformer- condition and RENGANATHAPURAM station load.2)110KV RNPM-SBT II# will be radial from SBT End.Intermediate SS 110KV 521 Madurai 230 KV II(100MVA)HV,LV Br,& CT's2)110KV RNPM - 1) & 2) monthly Maintenance works POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 16:00 1 concurrence for Approved 230 KV vadamadurai SS avail total shutdown.3)110KV RNPM-UDPT # will be radial from UDPT SBT II # Br,CT's UDPT for load end. Intermediate SS 110KV Kallimandhayam SS avail total shutdown. transfer

feeder load 130 UNIT IN SERVICE. ALL 400KV FEEDERS KARAMADAI-I&II ,PALAVADI-I&II AND ICT- Subject to mw and the other 522 Erode 230 KV MTPSII 230KV METTUR AUTO FEEDER GENERAL MAINTENANCE WORKS . I&II ARE IN SERVICE. ALL 230KV FEEDERS GOBI,MTPS-I AND STANDBY postponed Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 EE/SLDC/Erode feeders would TRANSFORMER EXCEPT THINGALUR FEEDER ARE IN SERVICE. approval overload

230KV GIS Koyambedu SS (CMRL)100MVA Auto Transformer - IIon 12.04.2017 between 10.00Hrs and 16.00 HrsAEE/Mtc for monthly maintenance workApproved by 523 Chennai 230 KV CMRL 230 KV Auto Transformer II Monthly maintenance approved Wed, 12-Apr-2017 10:00 Wed, 12-Apr-2017 16:00 1 0 Approved SE/O/North/ChennaiNo load transfer required and no interruption to the consumer.Auto Transformer - I will be in service.

100MVA Auto Transformer II, HV II & LV II During the LC period a) other 2 nos. 100MVA Auto Transformer will be in service. b) Sub to load 524 Madurai 230 KV TRICHY 230 KV BRs, HV II & LV II and their LAS,CTs and 0 There will be no interruption of supply to any of the SS and feeders. C) Necessary POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 Approved condiiton isolators. concurrence obtained from SE/O/Trichy.

230KV Thiruvarur - Nemmeli Thippiyakudy Line Premansoon Inspection and Rectification work, During the LC period all other 230KV feeders are in tied condition. Hence there will be no 525 Madurai 230 KV THIRUVARUR 230 KV POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 0 Approved Feeder Breaker, CT's and Isolator maintenance work interruption of supply to any other Substation.

During the L.C Period the all other 230KV #'rs tied with Grid. Hence there will be No App in 129 526 Madurai 230 KV KARAIKUDI 230 KV On 230KV PGCIL # 1 Bkr & Ct's For Monthly Mtc work. POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 Approved interruption of Supply. occ/132

During the LC period Vadamadurai SS is availing total shutdown, Angunagar SS will be 110KV SBT - RNPM II # Sec. 527 Madurai 110 KV SEMBATTY 230 KV Tree cutting work transferred to Aundur # And the feeder will be radial from SBT upto Gandhigramam SS. POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 0 Approved bet.Gandhigramam SS and 230KV RNPM SS Hence no interruption to any SS.

subject to the 110 KV Capacitor bank I Breaker CTs, 528 Erode 110 KV DEVIAKURICHI 230 KV For Monthly Maintenance work Capacitor Bank II will be in service approved Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 voltage profile in Approved Capacitor side Isolator, LAS the grid

TUTICORIN -SIPCOT On 110 KV Sipcot-TTN # No. II breaker with  During the L.C period,the 110KV Sipcot-TTN-II feeder will be in 'OFF' condition at both 529 Madurai 110 KV For monthly maintenance works. POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 0 Approved 230 KV CTs and line isolators only. ends since there is no intermediate SS and no SS will be affected please.

110KV Coimbatore-Arasur Feeder Section subject to transfer 110KV CBE-Arasur feeder loads(KPR Mill EHT Service, Sulur Traction EHT Service, 530 Erode 110 KV COIMBATORE 230 KV between 230KV Coimbatore SS and 110KV PMI Works by AE/Lines Coimbatore possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 16:00 1 of loads to arasur Approved 110KV Kallimadai SS and 110KV Irugur SS) will be transferred to 230KV Arasur SS. Kallimadai SS ss feed occ approved and 230 KV IDUKKI FEEDER BREAKER & LINE DURING LC PERIOD THE ABOVE FEEDER LOADS WILL BE CATER IN 230KV Myvadi 531 Erode 230 KV UDUMALPET 230 KV FOR MONTHLY MAINTENANCE WORKS possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 srldc to be Approved ENTIRE I&II FEEDERS addressed i)110KV Karamadai Feeder Br & CTs to be availed one 1 2 & 3 532 Erode 110 KV THUDIALUR 230 KV ii)110KV OKM-I feeder Br & CTs iii)110KV For Monthly maintenance Work Feeders Will be radial form other end Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 by one subject to Approved possible OKM-II feeder Br & CTs the load condition subject to the 110 KV Link I # Breaker and CTs & line To carry monthly maintenance work by During the LC period both ends Maintenance work programmed and hence no interruption 533 Erode 110 KV SINGARAPET 230 KV possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 15:00 1 other link feeder Approved isolators AEE/MTC/230 KV SS / SPT of supply loading limit During the above period of shut down a) 110KV Valadi SS avial toal shutdown on the same day. b) 110KV Thennur SS , 110KV Thiruvanaikoil SS will be fed radially from 110KV Trichy Grid SS. c) 110KV Poovalur SS, M/s.Kothari EHT SC will be fed radially 110KV Samayapuram - Trichy Grid feeder from 230KV Samayapuram Auto SS. d). The line Isolator towards 110KV Valadi SS at 534 Madurai 110 KV SAMAYAPURAM 230 KV line portion between 110KV Valadi SS and For premansoon EHT line inspection work. POSSIBLE Wed, 12-Apr-2017 10:00 Wed, 12-Apr-2017 17:00 1 0 Approved 110KV Thirvanaikoil ss will be Kept opend and earth switch closed. e)The line Isolator 110KV Thiruvanaikoil SS towards 110KV Thirvanaikoil ss at 110KV Valadi SS will be Kept opend and earth switch closed. f) Necessary concurrence has been obtained from M/s.Kothari EHT Service for switching operation. g)There will be no interuption to any other SS/EHT consumers.

subject to the During the Line Clear period,remaining two numbers 24 MVAR capacitor bank will be in 535 Erode 110 KV ARASUR 230 KV 110 KV CB-II Breaker,CTs and Cell units. For Monthly maintenance work. approved Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 15:00 1 voltage profile in Approved service. the grid

On 100 MVA Auto Tr II, LV II, HV II breaker & a.Monthly Maintenance work. B.Annual relay testing 536 Madurai 230 KV SRPUDUR 230 KV During the LC period Auto Tr I & III will be in service. POSSIBLE Wed, 12-Apr-2017 10:00 Wed, 12-Apr-2017 15:00 1 0 Approved CT only. work

subject to the 110 KV LINK # I, SF6 Bkr, CTs & Line During the LC period both ends Maintenance work programmed and hence no interruption 537 Erode 110 KV Singarapet 110 KV Monthly maintenance work possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 15:00 1 other link feeder Approved Isolator. of supply loading limit

230KV MTPS feeder LC will be availed at both ends. 3 Nos. 230 KV feeders will be in subject to the load 538 Erode 230 KV SALEM AUTO 230 KV Monthly maintenance work. possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 Approved Isolator. service. There will be no interruption to any sub station or feeders. condition existing

Subject to GUMMIDIPOONDI 230 Monthly maintenance work CT clamp and bolt nuts concurance to be obtained from m/S. Suriyadev during the period of LC, the generated 539 Chennai 230 KV 230KV Suriyadev feeder bay Pending Wed, 12-Apr-2017 10:00 Wed, 12-Apr-2017 17:00 1 Suryadev Approved KV replacement work load of M/s. Suriyadev fed to Sriperambadur 400KV SS through 230KV LILO switch yard concurrence

Carryout Monthly Maintenance works by 1.110 KV Ramiyanahally feeder breaker,CTs, Maintenance wing and Lines wing Neem Tree subject to the KARIAMANGALAM 230 Line switch and Line Between 230 KV Cutting work at Loc 56-57 , Earth Bond Open at Loc feeder being kept 540 Erode 110 KV It is Tie feeder hence there is no interruption of power supply. possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 14:00 1 Approved KV Karimangalam SS - 110 KV Ramiyanahalli No:82, Coconut Tree leaf Cutting work at Loc No: radial from SS 89,113-114 in line between 230 KV Karimangalam singarapet ss end SS - 110 KV Ramiyanahalli SS. Main breakers of bay 401,404,407 & 410 will be in hand tripped condition and 400KV For alignment of Bus earth switch works by L&T 541 Erode 400 KV karamadai230KV 400KV Bus section B1 MTPS I & II and PGCIL I & II feeders fed thro' Tie breakers and also ICT 1,2& 3 will be in possible Wed, 12-Apr-2017 10:00 Wed, 12-Apr-2017 17:00 1 occ approved Approved company. service.

1) 230KV Salem - MTPS feeder breakers kept hand tripped at Salem 230KV SS and Mettur 230KV SS.2) There will be no supply in 230KV Salem - MTPS feeder entire.3) subject to the load 542 Erode 230 KV SALEM AUTO 230 KV 230KV Salem - MTPS feeder entire. Road crossing jumpers checking. possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 Approved Salem 230KV SS and Mettur 230KV SS are availing breaker and line switch LC on that condition existing day.4) There will be no interruption of supply to any SS.

During the LC period,1) This feeder will be radial from NTKudi 230 KV SS upto 110 KV 110 KV Thanjavur - NTKudi feeder breaker, For monthly maintenance works by the Thirukkanurpatti SS, 2) 110 KV Thirukkanurpatti SS will avail shutdown on the same Sub to NT Kudi 543 Madurai 110 KV THANJAVUR 230 KV POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 Approved CT and LI. AEE/Mtce/230 KV SS/Thanjavur. day,3) all other 110 KV feeders will be in tied condition,4) no supply interruption to any Auto Loading SS.

A)230KV NEMMELI THIPPIYAKUDI- A)FOR MONTHLY PREVENTIVE MAINTENANCE THIRUVARUR FEEDER BREAKER, CT's 1)DURING THE LC PERIOD 230/110KV NEMMELI THIPPIYAKUDI SS RADIALLY FED NEMALITHIPIYAKUDI WORK BY AEE/MTC/ NEMMELI 544 Madurai 230 KV AND LINE ISOLATOR. B)230KV NEMMELI FROM 230KV KARAIKUDI SS.2) NO INTERRUPTION TO ANY SS AND ALL OTHER POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 0 Approved 230 KV THIPPIYAKUDI.B)FOR PREMONSOON THIPPIYAKUDI-THIRUVARUR FEEDER FEEDERS ARE TIED CONDITION. INSPECTION BY AE/LINES /PATTUKKOTTAI. ENTIRE

Subject to 110KV KUNDAH FEEDER NO 1 & 2 ,SF6 May be possible 545 Erode 110 KV KUNDAH PH2 FOR MONTHLY MAINTENANCE WORK SF6 BREAKER OFF IN CONDITION TOP AND BOTTOM BUS OPEN IN CONDITION Pending Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 EE/SLDC/Erode BREAKER AND ITS ACCESSIORIES with Erode LDC approval

During the period of L/C time,1. 230 KV T.V.Malai - Villupuram # will be OFF condition at THIRUVANNAMALAI 230 230 KV Tiruvannamalai - Villupuram #, 546 Chennai 230 KV Monthly maintenance work both ends,2. Other 2 Nos 230 KV T.V.Malai - Neyveli & Singarapet feeders will be in approved Wed, 12-Apr-2017 09:00 Wed, 12-Apr-2017 15:00 1 0 Approved KV Breaker, CT's and Line Isolator service. Hence there is no interruption of supply please. 110KV PYKARA - MOYAR 1# (BREAKER feeder 2 will be in 547 Erode 110 KV PYKARA FOR MONTHLY MAINTENANCE WORK NIL possible Wed, 12-Apr-2017 8:00 Wed, 12-Apr-2017 17:00 1 Approved AND CT) service

During the period of LC 110 KV Sethiathopu ss,110 KV vadakuththu SS,110 KV kullanchavadi SS,110 KV Naththapattu SS,110 KV M.T.Kuppam SSWill be availing Total GCC/Trichy wing work for KfW Fund Augmentation shutdown ( load relief for the bus strengthening work)LANCO feeder tie opened at Replace of Existing Twin Kunda strung bus by Twin Already applied on 548 Chennai 110 KV CUDDALORE 230 KV 110 KV Main strung Bus section (South side ) 0 Wed, 12-Apr-2017 09:00 Wed, 12-Apr-2017 17:00 1 Approved MOOSE in 110 KV Main strung Bus section (South 11.4.2017 via kullanchavadi SS(keezhakuppam , , thoppukollai, kornapathu,semmankuppam , side ) Capacitor bank side. B,mutlur ,Chempalst ).110 KV Chidambaram ss will be fed from LANCO IPP Hence NO Interruption of SupplyConcurrence obtained from SE/O/Villupuram

During the period of LC 110 KV Sethiathopu ss,110 KV vadakuththu SS,110 KV kullanchavadi SS,110 KV Naththapattu SS,110 KV M.T.Kuppam SSWill be availing Total 110 KV Cuddalore - Kullanchavadi # breaker shutdown ( load relief for the bus strengthening work)LANCO feeder tie opened at 549 Chennai 110 KV CUDDALORE 230 KV For monthly maintenance works Possible Wed, 12-Apr-2017 09:00 Wed, 12-Apr-2017 17:00 1 approved Approved Transformer-I breaker with Ct'S one by one. via kullanchavadi SS(keezhakuppam , , thoppukollai, kornapathu,semmankuppam , B,mutlur ,Chempalst ).110 KV Chidambaram ss will be fed from LANCO IPP Hence NO Interruption of SupplyConcurrence obtained from SE/O/Villupuram

110 KV Neyvelim - Vadakuthu feeder section During the period of LC 110 KV Sethiathopu ss,110 KV vadakuththu SS,110 KV For strand cut rectification works in the incoming 550 Chennai 110 KV CUDDALORE 230 KV between Vadakuthu SS and 110 KV M.T.Kuppam SSWill be availing Total shutdown Hence NO Interruption of Possible Wed, 12-Apr-2017 09:00 Wed, 12-Apr-2017 17:00 1 approved Approved dropper Jumper at Vadakuthu SS Sethiathoppu SS SupplyConcurrence obtained from SE/O/Villupuram

551 Chennai 110 KV THIRUVALAM 230 KV 110 KV Railway I & II feeder one by one. For EHT Line Maintenance Works. Possible Wed, 12-Apr-2017 09:00 Wed, 12-Apr-2017 14:00 1 approved Approved at both end one by one.Hence there will be no interruption of supply please.

i) On 110KV Railway Feeder-I and 110KV 552 Chennai 110 KV THIRUVALAM 230 KV i)For Monthly Maintenance Works Possible Wed, 12-Apr-2017 09:00 Wed, 12-Apr-2017 15:00 1 approved Approved Condition iii)The 230KV Link-II, 230KV Chittoor interstate feeders,230KV Link-I # and by one 230KV Mosur feeders will be in service and cater the SS Loads. Hence there will be no interruption of supply please.

1). The 110KV Salai SS(12MW)Availing Total shutdown work.2). The 110 KV K.G.Kandigai SS(08MW) Availing Total shutdown work3) 110 KV Itichiputtur SS Availing 553 Chennai 110 KV MOSUR 230 KV For attending Monthly Maintenance work. total shutdown 4) The concurrence of 110 KV EHT Consumer M/S ultra tech and M/s Possible Wed, 12-Apr-2017 09:00 Wed, 12-Apr-2017 14:00 1 approved Approved line Isolators MRF ltd may be obtained by AEE/O&M/Salai Hence there will be no interruption of supply please.

230 KV Mosur - Thiruvalam feeder Breaker, i). 230 KV Athipattu feeder and 230 KV Alamathy feeder are in service. ii) 110 KV Feeders 554 Chennai 230 KV MOSUR 230 KV For attending monthly maintenance works Possible Wed, 12-Apr-2017 09:00 Wed, 12-Apr-2017 17:00 1 approved Approved all are in service. iii). Hence there will no interruption of supply please.

110KV ALR-SKPY FEEDER CB,CT& LINE PMI Work by JE/Lines/Pollachi and Quarterly Mtce sarkarpathy ph 555 Erode 110 KV ALIYAR 230 KV Sarkarpathy PH Under shutdown condition possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 16:00 1 Approved ENTIRE work undershut down

For providing of dropper jumper in 230KV During the LC period,Auto transformer - I,HV-I,LV-I in tripped condition.230KV Anuppankulam - Kayathar feeder Bus Bar to 230KV ANUPPANKULAM 230 Anuppankulam-Kayathar feeder and 230KV Anuppankulam-Madurai feeder will be under 556 Madurai 230 KV 230KV Northern Bus entire. strung Bus and line switch to terminal tower. ( POSSIBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 12:00 1 0 Approved KV total shutdown.Auto Transformer-II & III will be fed from 230KV Anuppankulam-Sterlite Augmentation of 100MVA to 160MVA Auto feeder only. Transformer work)

557 Chennai 230 KV VILLUPURAM 230 KV 230KV Thiruvannamalai # For monthly maintenance works. Both end breaker hand Trip. For tightening of jumpers at various location in the Line Possible Wed, 12-Apr-2017 09:00 Wed, 12-Apr-2017 17:00 1 0 Approved

110 kV LMBPH - 1 feeder equipment linde To carry out monthly maintenance work at 110 kV (i) During the above LC period Unit 1 & 2 stand by condition depending upon the PWD subject to the load 558 Erode 110 KV LOWER METTUR 2 side isolator and earth switch at LMBPH -2 / LMBPH - 1 feeder equipment line side isolator and demand.(ii) LMBPH - 1 end applied LC on the day(iii) LMBPH - 3 and KR Thoppur feeder possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 15:00 1 Approved condition existing Nerinjipettai earth switch at LMBPH -2 / Nerinjipettai will be in service.

110 KV Unjanai,Thiruchencode,BKB- to be scheduled Subject to Zone-1 Bus LC for AOH work , TAN Delta Zone 2 ( BKB-1 & SPB feeders ) will be in service . Unit 1 & 2 NSB. Ponnisugar co- 559 Erode 110 KV BKB - 2 3,PonniSugars , Vendipalayam feeders & Bus postponed Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 with tsd in the EE/SLDC/Erode measurement by P&C wing. generation stop. Section Breakers with isolators individual fed ss approval CBD Subject to SE/O 560 Chennai 230 KV ACHRAPAKKAM 230 KV 16 MVA PR.TR.II FOR MONTHLY MAINTENANCE WORK 1.16 MVA PR.TR.I&III Will be inservice cater the entire 11kv loads Wed, 12-Apr-2017 09:00 Wed, 12-Apr-2017 12:00 1 0 Concurrence concurrence

230KV KPH-3 to Karamadai Feeder Tower No:60-72 subject to the load 561 Erode 230 KV KUNDAH PH3 230KV KPH-3 to Karamadai Feeder Pre-Monsoon Inspection work(PMI) and Bus and Line both end open condition Earth switch closed condition. possible Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 Approved condition existing Maintenance work.

562 Chennai 110 KV THARAMANI 230 KV 110 KV Tidel Park -2 feeder Monthly Mtce. work 110 KV Tidel Park-1 feeder will be in service Possible Wed, 12-Apr-2017 09:00 Wed, 12-Apr-2017 17:00 1 0 Approved

Possible ( 5 - 563 Chennai 230 KV MYLAPORE 230 KV 100 MVA 230/110 KV Auto Tr.-1 Monthly Mtce. work 100 MVA 230/110 KV AUTO TR.-2 Will be in service Wed, 12-Apr-2017 05:00 Wed, 12-Apr-2017 10:00 1 0 Approved 10)

Due to ALDR ICT 230 KV PUDUKKOTTAI - KARAIKKUDY PG FOR MONTHLY MAINTENANCE WORKS OF Loading.This LC PUDUKKOTTAI 230 KV SS LOADS WILL BE MAINTAINED FROM 230 KV ALUNDUR 564 Madurai 230 KV PUDUKOTTAI 230 KV FEEDER BREAKER, CT, CVT, ISOLATORS BREAKER, CT, CVT, ISOLATORS AND 230 KV POSISBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 programmed Approved FEEDER AND HENCE THERE WILL BE NO INTERUPTION OF SUPPLY TO ANY SS. AND 230 KV EHT LINE EHT LINE AND GRT TESTING WORKS along with PDKT AuTO LC Due to ALDR ICT Loading.This LC Approved subject to 565 Madurai 230 KV KARAIKUDI 230 KV On 230KV PGCIL-PDKT #. Tree cutting work. Concerned Obtained from EE/O/PDKT. POSISBLE Wed, 12-Apr-2017 9:00 Wed, 12-Apr-2017 17:00 1 programmed along with PDKT SRLDC approval AuTO LC.App in 129occ /179 566 Chennai 230 KV SPKoil lines 230 kV Kalpakkam - Acharapakkam feeder Insulator Replacement work Possible Thu, 13-Apr-2017 10:00 Thu, 13-Apr-2017 17:00 1 approved Approved

567 Chennai 230 KV SPKoil lines 110 KV Orgadam feeder 1 Quertaly maintenance work Possible Thu, 13-Apr-2017 10:00 Thu, 13-Apr-2017 17:00 1 approved Approved

Auto I H.V and L.V Breaker with C.T. and all SUB TO WIND 568 Madurai 230 KV KODIKURICHY 230 KV Monthly Maintenance Work on Auto Transformer I During the L.C period(i)Auto-I will be out of service,(ii) Auto-II & III will Cater the SS load POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 Approved isolators. GENERATION

110 KV ERODE - THINGALORE II FEEDER DURING LC PERIOD NO SS WILL BE AFFECTED. NECESSARY CONCURRENCE subject to the load 569 Erode 110 KV Erode 110 KV MONTHLY MAINTENANCE WORK possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 14:00 1 Approved BREAKER AND CT OBTAINED FROM SE/EEDC/ERODE. condition existing

1).230 KV Pasumalai - TTPS #, BKR & CT,LI a)Maintenance Works of BKR & CT,LIb)Tree cutting SUB TO TTPS 570 Madurai 230 KV PASUMALAI 230 KV EE / EM - III / TTPS has also programmed POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 14:00 1 Approved only. 2) Line Entire. works and Flash over Disc replacement works GENERATION

During the LC period the 110 KV SR Puthur - KDR I # will be radial from SR Puthur upto 110 KV SR Puthur - Kodayar I # line section Tree clearance work and Tower to Tower inspection. 571 Madurai 110 KV SRPUDUR 230 KV Veyanoor SS(incl) and KDR I feeder will be radial from Kodayar PH to Pechiparai SS POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 14:00 1 0 Approved between Veeyanoor and Pechiparai. . (incl). Hence no ss will be affected.

1)Both end Breakers to be tripped2)Both end Bus and Line Isolators to be opened 3)Both SUB TO TTPS 572 Madurai 230 KV TTPS 230KV TTPS-MADURAI FEEDER For maintenance work and MRT testing POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 Approved end earth switches to be closed condition GENERATION

230 AMPM- CKNI&230KVCKN 230KV Amuthapuram- Nallamanaickenpatty- For rectification of Arching Horn at Location No:375 During LC Period, 1. 230 KV Nallamanayakkan pattiSS will be fed from 230KV 573 Madurai 230 KV KODIKURICHY 230 KV POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 I-NMPT # TO BE Approved Checkanoorani feeder - I (Y Phase)&365 (R&Y Phase) Checkanoorani SS No ss will be affected. TIED AND CKNI ICT LOADING

230 AMPM- CKNI&230KVCKN 230KV Amuthapuram-N.M.Patty Feeder with 1) During the LC period there will be NO supply in this feeder. 2) Other end also avail LC 574 Madurai 230 KV AMUTHAPURAM 230 KV Monthly Maintenance Work POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 I-NMPT # TO BE Approved Breakers,CTs and its isolators on same day. 3) Concurrence obtained from SE/NCES/TIN. TIED AND CKNI ICT LOADING

TUTICORIN -AUTO 230 On 110KV TTN-Sipcot-I feeder breaker with No SS will be affected.During this LC period 110KV vagaikulam SS will be radially fed SUB TO LOAD 575 Madurai 110 KV For monthly maintenence work POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 Approved KV CT bus and line side switches from 230KV meelavitan SS. CODITION

SUB TO TIEING For attending breaker CT's and it's isolators Monthly During the LC period evacuation will be done through 230KV Valuthur - Kavanoor and Approved Subject to 576 Madurai 230 KV VALUTHUR 230 KV 230KV Valuthur - Alagarkovil entire. POSSIBLE Thu, 13-Apr-2017 10:00 Thu, 13-Apr-2017 17:00 1 OF 230 ALKL- maintenance work. Karikudi feeders. load condition ALDR #

ONLY 40 TO 50 TOTAL SHUT DOWN TO BE PROPOSED IN THE FOLLOWING 110 KV SUB 230 KV THENI- CHEKKANURANI # FOR MONTHLY MAINTENANCE AND LINE S/D PROPOSED. Approved Subject to 577 Madurai 230 KV then I 230 KV STATIONS FOR LOAD RELIEF OF 108MW (110/22 KV GANDAMANUR SS,THEVARAM POSISBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 BREAKER WITH CT AND LINE ISOLATER. PREMONSOON INSPECTION WORK. MORE S/D load condition SS, AYYAMPALAYAM SS,BATLAGUNDU SS,VAIGAI SS,&ANDIPATTY SS) NEEDED 230 AMPM-CKNI &230KVCKNI- NALLAPPANAYAKANPA 230KV AMUTHAPURAM FEEDER BREAKER DURING THE L.C PERIOD OTHER END ALSO AVAILING L.C ON THAT DAY.NO SS Approved Subject to 578 Madurai 230 KV FOR MONTHLY MAINTENANCE WORK POSSIBLE Thu, 13-Apr-2017 10:00 Thu, 13-Apr-2017 16:00 1 NMPT # TO BE TTY 230 KV WITH C.T AND LINE ISOLATOR WILL BE AFFECTED load condition TIED AND CKNI ICT LOADING 110 KV KARAIKUDI-VALUTHUR # SEC. MAIN LINE WILL BE KEPT IN TIED CONDITION. THONDI TO BE AVAILED 579 Madurai 110 KV KAVANOOR 230 KV LINE MAINTENANCE WORKS POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 0 Approved BET. THIRUVADANAI TO THONDI SHUTDOWN; L.R. -1.5 MW On 110KV TCP #'r Bkr & CT's and its O/G During the Lc Period No Generation in TCP Consent Obtained from TCP 580 Madurai 110 KV KARAIKUDI 230 KV For Monthly Mtc work. POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 0 Approved isolator. Generator.Hence there will be interruption of Supply. During LC period110KV Elanagar SS now back fed through 110KV PSI- Rasipuram PUDHANCHANTHAI 230 110KV Rasipuram feeder CB, CTs and LIne feeder will be transferred to Unjanai 230KV SS.110KV RAsipuram SS will be back fed subject to transfer 581 Erode 110 KV For regular maintenance works. possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 15:00 1 Approved KV Switch. through 110KV PSI-KN Patty feeder.Otherwise 110KV Rasipuram + Elanagar SSs will be of loads transferred to 110KV Salem-Mallur feeder.No supply interruption.

230kv Bus Coupler Breaker& Transfer Bus 582 Madurai 230 KV UDAYATHUR 230 KV Annual Maintenance work During the LC period NO 230kv feeders,230kv PowerTrs,and Auto Tr.affectd POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 14:00 1 0 Approved Entire.

GENERATI THE PWD DEMAND WILL BE MEET OUT BY OTHER STANDBY MACHINES AT DAM other machines 583 Erode NG METTUR DPH MACHINE 2 MONTHLY MAINTENANCE WORKS possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 15:00 1 Approved POWER House. will be available STATIONS

Line Premansoon inspection and Rectification work, During the LC period there will be no interruption of supply to any other substation, Since 584 Madurai 110 KV THIRUVARUR 230 KV 110KV Thiruvarur - T.R. Pattinam feeder POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 0 Approved Breaker, CT's and Isolator maintenance work. this feeder is idly charged condition. During the LC period,(1) 110KV Madhampatty SS,Anthiyur SS,Devarayapuram SS and 110 KV Western Bus Section Entire (Auto Tr- peedampalli SS will be under Total Shut down.(2) 110KV OKM-Thudiyalur I & II feeder subject to all the OTHAKKAL MANDABAM I, TDLR I & II #'s, Negamam I & II #'s, Sulur # for annual bus maintenance works and defective loads will be transferred to 230 KV TDLR SS. (3) 110KV OKM-Negamam I & II feeder will connected feeders 585 Erode 110 KV possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 Approved 230 KV ( Breaker & CT's, Bus dropper & jumper, PT- switch ( be kept radial from 110KV Negamam SS.(4) 230/110KV Auto Transformer I will be under being kept radial I) Cut OFF condition.(5) The reamining two Auto Transformers will be under service to cater from the other end the SS loads.Hence, No SS will be affected.

During the LC period, (1) 110KV Madhampatty SS, Anthiyur SS,Devarayapuram SS & Peedampally SS will be under Total Shut down.(2) 110KV OKM-Thudiyalur I feeder loads subject to the OTHAKKAL MANDABAM 586 Erode 110 KV 110 KV Bus section Breaker (Breaker & CT's) for monthly maintenance works will be transferred to 230KV TDLR SS.(if necessary)(3) 230/110KV Auto Transformer-I possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 14:00 1 above condition Approved 230 KV will be capable for managing 110KV Western bus loads and Auto Transformer II & III will being fulfilled be capable of managing 110KV Eastern bus loads.Hence, No SS will be affected.

110 kv MCL-1 Feeder BREAKER , CT'S DURING THE ABOVE SHUTDOWN PERIOD THERE WILL BE NO INTERRUPTION TO 587 Madurai 110 KV EACHANGADU 230 KV MONTHLY MAINTENANCE WORK POSSIBLE Thu, 13-Apr-2017 10:00 Thu, 13-Apr-2017 17:00 1 0 Approved ONLY EHT CONSUMER .Since the feeder is in idly charged

Preponed TO 588 Madurai 230 KV SEMBATTY 230 KV 230KV SBT - Theni # Bkr, CTs and line entire 1. Monthly maintenance work2. Tree cutting work During the LC period the other end is also availing LC. 0 Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 Approved 12.4.17

subject to 230 KV MYVADI - KADAMPARAI - 1 utilization of 589 Erode 230 KV Udumalpet 400 KV MONTHLY MAINTENANCE WORK BOTH END AVAIL LC possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 Approved FEEDER BREAKER, CT AND LINE ENTIRE kadamparai machines 110KV Melakallur-Sanganeri Feeder sec b/w During the LC period,I.Melapalayam SS will be radially fed from Sanganeri II.Karisalpatti SUB TO WIND 590 Madurai 110 KV KAYATHAR 230 KV For Defective Disc replacement at Various location. POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 Approved Karisalpatti&melapalayam SS willbe radially fed from Melakallur SS Hence No SS affected GEN subject to the feeder being kept 110 KV Deviakurichy-Singipuram feeder- I 110KV Deviakurichy - Singipuram feeder- I will be kept radial from Singipuram 230KV SS 591 Erode 110 KV DEVIAKURICHI 230 KV For Monthly Maintenance work possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 radial from Approved Breaker, CTs and Line side isolators end. singapuram ss end

TUTICORIN -SIPCOT On 230 /110 KV Auto-II, HV-II and LV-II Â During the L.C period, Auto Transformer I will be in service and no SS will be affected SUB TO LOAD 592 Madurai 230 KV For monthly maintenance work. POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 Approved 230 KV breakers with CTs and LAS only. please. CONDITION

230kv sv chatram-Mambakkam feeder entire 593 Chennai 230 KV Sriperumbudur 400 KV Line patrol and jumper tightness work During the period of shutdown 230kv spr-mambakkam will be in service Possible Thu, 13-Apr-2017 05:00 Thu, 13-Apr-2017 09:00 1 0 Approved line

1.110KV ACK- MURUKKERI FEEDER WILL BE HANDTRIPED CONDITION IN ACK 110KV ACK -MURUKKERI FEEDER 230KV SS END.2.110KV MURUKKERI SS LOAD WILL BE TRANSFERED TO 110KV SP 594 Chennai 230 KV ACHRAPAKKAM 230 KV TO CARRYOUT MONTHLY MAINTENANCE WORK Possible Thu, 13-Apr-2017 09:00 Thu, 13-Apr-2017 16:00 1 0 Approved BREAKERS AND CT'S KOIL II FEEDER THROUGH 110KV ILLEDU SS VIA3.HENCE NO INTERUPTION OF POWER SUPPLY

Subject to During LC period there is no SS will be affected since there is inter connected SS fed from okm bus lc 595 Erode 110 KV Udumalpet 110 KV Monthly Maintenance work postponed Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 EE/SLDC/Erode line. Between UDT and Anthiyur other end. recommended approval

subject to 110KV Kathirnaaiken palayam SS will be under Total Shutdown and Aquasub EHT Will 596 Erode 110 KV THUDIALUR 230 KV 110KV Paykara BR & CTs For Monthly Maintenance & annual relay test Work possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 15:00 1 kathirnaickenpalay Approved be fed from 110KV P N Palayam Feeder am ss tsd

Sunguvarchatram 400 597 Chennai 230 KV 230KV SVC - Mambakkam # entire for monthly maintenance work During the LC period the 230KV SVC - Mambakkam # will be out of service Possible Thu, 13-Apr-2017 09:00 Thu, 13-Apr-2017 17:00 1 0 Approved KV

110 KV Ponnapuram - Thungavi # Breaker & 1. 110KV THUNGAVI FEEDER WILL BE KEPT RADIAL FROM 230KV UDT SS/110KV subject to the 598 Erode 110 KV PONNAPURAM 230 KV CTsAND LINE UPTO S/S OF THUNGAVI FOR MONTHLY MAINTENANCE WORKS. POOLAVADY FEEDER UPTO POOLAVADY S.S. WITH THE ENTIRE LOAD OF possible Thu, 13-Apr-2017 10:00 Thu, 13-Apr-2017 17:00 1 feeder being kept Approved S.S. THUNGAVI S.S.2.HENCE NO SS WILL BE AFFECTED. radial from udpt ss

SPR During the period of shutdown the entire load of 230KV SIPCOT Mambakkam SS 599 Chennai 230 KV SIPCOT(MAMBAKKAM) Breaker, Current Transformers & Line side For monthly maintenance works. [Approximately: 45MW] will be fed from 400KV Sriperumbudur SS through 230KV Possible Thu, 13-Apr-2017 10:00 Thu, 13-Apr-2017 17:00 1 0 Approved 230 KV isolator only. SIPCOT- Sriperumbudur feeder without interruption.

subject to the 110 KV Link II # Breaker and CTs & line To carry monthly maintenance work by During the LC period both ends Maintenance work programmed and hence no interruption 600 Erode 110 KV SINGARAPET 230 KV possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 15:00 1 other link feeder Approved isolators AEE/MTC/230 KV SS / SPT of supply loading limit App in 129 230KV Sankaneri-Abisekapatti feeder 601 Madurai 230 KV SANKANERI 230 KV For monthly maintenance purpose. During the LC Period there willbe no supply in the Entire feeder. POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 14:00 1 occ/134SUB TO Approved Breaker CTS&Lineswitches. WIND GEN 1) For Releasing and restringing of 3 Nos. Kundha conductor and 1 No. earth wire between loc 196 and 197 and 3 Nos. Zebra conductor and 1 No. earth 230 KV Arasur - Gobi feeder Br,CTs and line subject to the load 602 Erode 230 KV ARASUR 230 KV wire between loc 37 and Loc 38 by TLC wing During the Line Clear period,rother five number 230 KV Feeders will be in service. possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 Approved entire. condition existing Mettupalayam wing of GCC/Coimbatore.2)PMI Works by lines wing 3) Annual relay testing works by P & C wing /Thudialur 4) Monthly maintenance work

110 KV SRP - ARMI # I & II will be radial from ARMI SS upto SRP (excl).110 KV SRP- Bus side Isolator No.41 of 110 KV Arumuganeri II SUB TO WIND 603 Madurai 110 KV SRPUDUR 230 KV On 110 KV Bus III Only Kodayar II #.radial from Kodayar upto SRP (excl) and Parasala (Incl). 110 /11KV SRP.SS POSSIBLE Thu, 13-Apr-2017 10:00 Thu, 13-Apr-2017 14:00 1 Approved feeder. Allignment Work. GEN will avail total Shutdown. Approved by SE/KKEDC/NGL.

a)Monthly Preventive Maintenance work. 230KV Alundur - Thanjavur-II Feeder During the LC period, a)Other end also avail shutdown. b)All other 230 KV feeders will be NOT PROGRAMMED Subject to EE/SLDC/ 604 Madurai 230 KV ALUNDUR 230 KV b)Premonsoon Inspection and tree cutting work. Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 Breaker, CT's, CVT's and Line Isolators. in service. c)There will be no interruption of supply to any other feeders. POSSIBLE ALONG WITH S/D Madurai approval c)Relay Testing Work.

sldc madurai 605 Erode 230 KV UNJANAI 230 KV Jumper Tightness Checking work. 0 Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 Approved Valayapatti 110KV # recommendation Villipalayam SS subject to the 110 KV LINK # II OMCB Bkr, CTs & Line During the LC period both ends Maintenance work programmed and hence no interruption 606 Erode 110 KV Singarapet 110 KV Monthly maintenance work possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 15:00 1 other link feeder Approved Isolator. of supply loading limit During the LC period there will be no supply in 110KV Bus Coupler Breaker (104-52) only. 607 Madurai 110 KV kayathar230kv 110KV Bus Coupler Breaker (104-52) only Monthly Maintenance work POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 0 Approved hence no substation affected.

110KV Thiruvachi # Breaker, CTs, ,Isolators subject to the load 608 Erode 230 KV INGUR 230 KV MONTHLY MAINTENANCE WORKS DEPENDING UPON LOAD CONDITION possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 14:00 1 Approved and Line side Isolator condition existing Auto Transformer III and its HV & LV subject to the 609 Erode 230 KV INGUR 230 KV MONTHLY MAINTENANCE WORKS possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 14:00 1 other auto trs Approved Isolator loading limit 110 KV KEELAVERANAM # BREAKER AND 110 KV KEELAVERANAM SS WILL BE FEED FROM 110 KV UTHUMALAI SS ,NO SS 610 Madurai 110 KV kamuthi 400 KV MONTHLY MAINTENANCE WEORK Pending Thu, 13-Apr-2017 10:00 Thu, 13-Apr-2017 17:00 1 Approved CT ONLY AFFECTED

1.For replacement of damaged fixed jaw contacts in a.110kv Panjetty feeder 110 kv Metrowater and 110kv Korattur feeder loads will be Subject to CBD Pending To be 611 Chennai 230 KV MANALI 230 KV 230kv Main Northern Bus Possible Thu, 13-Apr-2017 06:00 Thu, 13-Apr-2017 11:00 1 230kv Bus switch in 230kv GIS SS Bay transferred to other ends Concurrence discuss

110 KV Kayathar - N.Subhiahpuram # SUB TO LOAD 612 Madurai 110 KV KAYATHAR 230 KV For Monthly Maintenance work During the LC Period other end also avails LC. Hence, no SS affected POSISBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 Approved Breaker with CT only CONDITION

1) For monthly maintenance works by the 230 KV Thanjavur - Alundur-2 feeder, During the LC period,1) other end also will avail LC on the same day,2) all other 230 KV NOT PROGRAMMED Subject to EE/SLDC/ 613 Madurai 230 KV THANJAVUR 230 KV AEE/Mtce/Thanjavur,2) For carrying out premonsoon Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 breaker, CT & LI. feeders will be in tied condition,3) no supply interruption to any SS. POSSIBLE ALONG WITH S/D Madurai approval inspection works by the AEE/Lines/Thanjavur.

230 kv arasur to 614 Erode 230 KV karamadai230KV 230KV Karamadai-Pushep feeder. PMI works by AE/Lines/Kattabettu. LC programmed at other end also. postponed Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 gobi feeder lc Approved recommended subject to the 1)230KV Deviakurichi-Singapuram I Feeder breaker & CT's Maintenance availing 110KV Deviakurichi-Singapuram I feeder being kept Deviakurichi SS. 2)110KV Deviakurichi-Singapuram I Feeder series switch at Attur 110KV 615 Erode 110 KV SALEM AUTO 230 KV Feeder(section Between Deviakurichi 230KV Road & Railway crossing jumpers checking. possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 radial from Approved SS towards Deviakurichi side will be Kept Opened.3)There will be no interruption of SS -Attur 110KV SS) singapuram ss supply to any SS. end

A)AUTO TRANSFORMER-II, HV-II, LV-II 1) DURING THE LC PERIOD, 110KV PERAVURANI (LR: 20MW) AND 110KV DUE TO AUTO BREAKERS AND CT's. B)110KV Pattukkottai A) FOR MONTHLY MAINTENANCE WORK BY SETHUBAVACHATHITRAM SS(LR: 8 MW) AND 110KV KEERAMANGALAM (LR: LOAD NEMALITHIPIYAKUDI -Peravurani - Sethubavachitram- AEE/MTC/N T KUDI.B) FOR PREMONSOON NOT Subject to EE/SLDC/ 616 Madurai 230 KV 12MW) WILL AVAIL TOTAL SHUTDOWN.2) AUTO TRANSFORMER-I in service.3) NO Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 CONDITION: 230 KV Keeramangalam Radial feeder. (LP: 110KV INSPECTION WORK BY AE/LINES POSSBLE Madurai approval INTERRUPTION TO ANY OTHER SS.4) IF NECESSARY, 110KV N T KUDI- MORE S/D Peravurani SS to 110KV Sethubavachitram /PATTUKKOTTAI THANJAVUR FEEDER TIE WILL BE OPENED AT 230KV N T KUDI SS. REQUIRED SS ).

110KV Main Bus portion between MBS 1 to subject to the load 617 Erode 110 KV METTUR AUTO 230 KV For Annual Maintenance work During the LC period 110KV Auxiliary Bus portion will be in service possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 Approved western side condition existing

GENERATI other units will be 618 Erode NG PYKARA UNIT 3 FOR MONTHLY MAINTENANCE WORK NIL possible Thu, 13-Apr-2017 8:00 Thu, 13-Apr-2017 17:00 1 Approved available STATIONS

Durind the period of LC 110KV Bus 'A' & 'B' will be independently Hence NO Interruption 619 Chennai 110 KV CUDDALORE 230 KV 110 KV BUS coupler breaker with CT'S For monthly maintenance works Possible Thu, 13-Apr-2017 09:00 Thu, 13-Apr-2017 17:00 1 0 Approved of SupplyConcurrence obtained from SE/O/Villupuram

230 kv arasur to 230 KV PUSHEPH - KARAMADAI FEDDER IN Tripped condition, 230 KV line & Bus 620 Erode 230 KV PUSHEP 230 KV PUSHEPH - KARAMADAI # MONTHLY MAINTENANCE WORKS postponed Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 gobi feeder lc Approved isolators in open condition recommended

The 110 KV Thiruttani SS(20MW) availing Total Shutdown work.2) The 110 KV 621 Chennai 110 KV MOSUR 230 KV For attending Monthly Maintenance work. Poonimangadu SS (08 MW) Availing total shutdown work 3). 110 KV AJPET SS (18 MW) Possible Thu, 13-Apr-2017 09:00 Thu, 13-Apr-2017 14:00 1 0 Approved Availing total shutdown work 5). Hence there will be no interruption of supply please.

AUTO TRANSFORMER NO-III, HV -III , LV- the 110 KV Thiruttani SS availing Total Shutdown work. 2)Auto Transformers I,II,&IV are 622 Chennai 230 KV MOSUR 230 KV For attending Monthly Maintenance work. Possible Thu, 13-Apr-2017 09:00 Thu, 13-Apr-2017 17:00 1 0 Approved III, CT'S AND LAS only in service condition 3) Hence there will be no interruption of supply please.

(a) Monthly Maintenance Works of BKR & CT,LI. ANUPPANKULAM 230 110 KV APKM - Thulukkapatti I feeder Br., During the LC period 110 KV Sattur SS will be availing total shut down. Hence no ss will 623 Madurai 110 KV (b)For replacement of flash over disc at Loc. No.5 & POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 14:00 1 0 Approved KV CT and Line entire. be affected. 14.

ANUPPANKULAM 230 During the LC period The other end also will be availing LC on the same date. Hence No 624 Madurai 230 KV 230 KV TTPS - PSQ feeder Premonsoon inspection works POSSIBLE Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 0 Approved KV SS affected.

110 KV Thulukkapatti - Aruppukkottai fedder (a) Line deviation of line between Loc. 1 to 3 on During the LC period, 110 KV Velayuthapuram SS,110 KV MRPM SS and M/s.SRM EHT ANUPPANKULAM 230 SUB TO LOAD 625 Madurai 110 KV section between 110 KV MRPM SS and DCW basis. (b) For providing GI Metel spike on under total shut down.110KV Aruppukkottai SS load will be transfer to 110KV Kavanoor - POSSIBLE Thu, 13-Apr-2017 7:00 Thu, 13-Apr-2017 17:00 1 Approved KV CONDITION Thullukkapatti SS tower cross arm. Kamuthi feeder. Hence no SS will be affected.

During the LC period,(1) 110KV Madhampatty SS,Anthiyur SS,Devarayapuram SS and peedampalli SS will be under Total Shut down. (2) 110KV OKM-Thudiyalur I & II feeder loads will be transferred to 230 KV TDLR SS.(3) 230/110KV Auto Transformer-I under 110 kv western Subject to OTHAKKAL MANDABAM 230KV TBC Breaker section between 89 MA independent condition and capable to manage 230KV Western Bus loads and 110KV 626 Erode 230 KV To remove the loop jumper provided in postponed Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 bus lc EE/SLDC/Erode 230 KV and 89 MB bus isolators western bus loads (110KV Bus section breaker under cut-OFF condition) with support of recommended approval wind generation.(4) 230/110KV Auto Transformer-II & III under parallel condition and capable to manage 230KV Eastern Bus loads.(5) Already 230KV OKM-Palladam feeder is substituted with TBC Breaker to retain its original condition. subject to the 1.Monthly Maintenance 110KV salem II feeder will be fed radially from salem end. 2.Auto feeder being kept 627 Erode 110 KV SINGAPURAM 230 KV 110KV salem II Feeder (CT,Breaker) Monthly Maintenance possible Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 Approved LC at salem end is on 03.04.2017 & 15.04.2017 & 21.04.2017 Only. radial from salem ss end BASIN 230 KV Mylapore # will not be in service and 230 KV Tondiarpet # , all 110 KV #s , Auto 628 Chennai 230 KV BRIDGE(GMRVASAVI) 230 KV Mylapore # Annual Relay test by GRT / Metro / Chennai Possible Thu, 13-Apr-2017 09:00 Thu, 13-Apr-2017 17:00 1 0 Approved Tr 1,2,3 will be in service. 230 KV FOR ANNUAL RELAY TESTING WORK BT to be rescheduled 230 KV ARASUR FEEDER BREAKER AND 230 KV MTPS II FEEDER,230 KV ANTHIYUR FEEDER AND 230 KV 629 Erode 230 KV GOBI 230 KV P&C/GOBI AND FOR MONTHLY MAINTENANCE postponed Thu, 13-Apr-2017 9:00 Thu, 13-Apr-2017 17:00 1 with the other end Approved CT'S WITH LINE SWITCH PALLAKAPALAYAM FEEDER ARE IN SERVICE,IT MAY CATER THR LOAD. WORK lc

630 Chennai 230 KV Orgadam 230 kV 230 Tie Breaker Quartely Maintenance Work Possible Thu, 13-Apr-2017 09:00 Thu, 13-Apr-2017 17:00 1 0 Approved 631 Chennai 110 KV MANALI 230 KV 110kv Bus Section-2 Routine maintenance works a Pending Fri, 14-Apr-2017 10:00 Fri, 14-Apr-2017 17:00 1 Condition Approved on 19th

632 Chennai 110 KV MANALI 230 KV 110kv Bus Section-2 Routine maintenance works a Pending Fri, 14-Apr-2017 10:00 Fri, 14-Apr-2017 17:00 1 0 Repeat

Postponed to 110 KV Avadi-Manali feeder (Between Puzhal- 110 KV Mathur SS will be supply fed from 230 KV Manali SS & 110 KV Puzhal SS will be 633 Chennai 110 KV KORATTUR 230 KV Jumper Tightness at various location Sunday Fri, 14-Apr-2017 09:00 Fri, 14-Apr-2017 17:00 1 0 Approved Muthur) fed from 110 KV Thirumullaivoyal SS 16.04.17 possible with CBD 634 Chennai 230 KV Sriperumbudur 400 KV 230KV SPR-Kadapperi-1 feeder Quarterly maintenance work During the period of shutdown 230KV-Kadapperi-2 feeder will be in service Possible Fri, 14-Apr-2017 09:00 Fri, 14-Apr-2017 17:00 1 Approved concurrence

possible with CBD 635 Chennai 230 KV Kadapperi 230KV SPR-Kadapperi-1 feeder Quarterly maintenance work Top Phase insulator replacement work at 19 Possible Fri, 14-Apr-2017 09:00 Fri, 14-Apr-2017 17:00 1 Approved concurrence

636 Chennai 230 KV SPKoil230 KV 230 KV Kalpakkam feeder 1 Insulator Replacement work Possible Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 17:00 1 0 Approved

possible with CBD 637 Chennai 230 KV Kadapperi Auto Transformer 2 Monthly Maintenance Work Possible Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 17:00 1 Approved concurrence

638 Chennai 230 KV SPKoil lines Auto Transformer 1 Monthly maintenance work Possible Sat, 15-Apr-2017 10:00 Sat, 15-Apr-2017 17:00 1 approved Approved

During the LC period, a) 110KV Trichy-Srirangam feeder will be radially fed from 230kv samayapuram SS upto 230KV Trichy SS. b) All other 110KV feeders are in tied condition. Due to 110 Smpm- 639 Madurai 110 KV TRICHY 230 KV For Monthly Maintenance works POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 Approved and CTs only c) there will be no interruption of supply to any other feeder and SS. d) Necessary Try # LC at Smpm concurrence obtained from other 230KV Samayapuram SS end.

400 KV MAIN BREAKER FOR ICT-1(406- App in 129 52),TIE BREAKER (405-52),110 KV LV During the LC period there will be no supply in 400 KV MAIN BREAKER FOR ICT-1(406- OCC/154 . sub to BREAKER (101-52),110 KV AYYANARUTHU- 52),TIE BREAKER (405-52),110 KV LV BREAKER (101-52),110 KV AYYANARUTHU- Approved subject to 640 Madurai 400 KV kayathar230kv Monthly Maintenance work POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 providing jumper 1,AYYANARUTHU-2 ,KEELAVEERANAM 1,AYYANARUTHU-2 ,KEELAVEERANAM FEEDER BREAKERS,400/110 KV ICT-1 & SRLDC approval bw Vannikonendal FEEDER BREAKERS,400/110 KV ICT-1 & 110KV Bus-1&2-PT. and uthumalai 110KV Bus-1&2-PT

During the LC period, a) 110KV Trichy-Srirangam feeder will be radially fed from 230kv samayapuram SS upto 230KV Trichy SS. b) All other 110KV feeders are in tied condition. NOT DUE TO 110 641 Madurai 110 KV TRICHY 230 KV For Monthly Maintenance works Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 14:00 1 Approved and CTs only c) there will be no interruption of supply to any other feeder and SS. d) Necessary POSSIBLE SMPM-TRY # LC concurrence obtained from other 230KV Samayapuram SS end. During the above period of shut down a) The 110KV Srirangam SS avail total shutdown on the same date. b)110KV Kambarasampettai SS will be fed radially from 230KV Trichy Auto SS. C) 110KV AIA EHT Service, 110KV Samayapuram SS will be fed radially from 110KV Samayapuram - Srirangam feeder line 230KV Samayapuram Auto SS. d). The line Isolator towards 110KV Srirangam SS at SUB TO LOAD 642 Madurai 110 KV SAMAYAPURAM 230 KV portion between 110KV Samayapuram SS For premansoon EHT line inspection work. POSSIBLE Sat, 15-Apr-2017 10:00 Sat, 15-Apr-2017 17:00 1 Approved 110KV Samayapuram ss will be Kept opend and earth switch closed. e)The line Isolator CONDITION and 110KV Srirangam SS. towards 110KV Samayapuram ss at 110KV Srirangam SS will be Kept opend , Breaker in H/T condition and earth switch closed. f) There will be no interuption to any other SS/EHT consumers.

1)110 KV Veerasigamani# I Breakers with 1 Echantha SS will be FED From Veerasigamani # II by closing of 110KV AB Switch at 643 Madurai 110 KV KODIKURICHY 230 KV 1)Monthly maintenance work POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 0 Approved C.T and All Isolators . echantha SS towards Veerasigamani SS.

On 230KV Kayathar - TTN Auto feeder a) For monthly maintenance work. b) Tower to SUB TO TTPS 644 Madurai 230 KV KAYATHAR 230 KV During the LC period, Other end also availing LC, Hence no SS affected. POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 Approved breaker with CT & entire line Tower inspection work. GENERATION

110 KV ERODE - BKB I FEEDER BREAKER DURING LC PERIOD ERODE 110 KV SS UNDER TOTAL SHUTDOWN. NECESSARY subject to the load 645 Erode 110 KV Erode 110 KV MONTHLY MAINTENANCE WORK possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 15:00 1 Approved AND CT CONCURRENCE OBTAINED FROM SE/EEDC/ERODE. condition existing

subject to the During the LC period 110KV Anthiyur - feeder will be kept in radial condition from 230KV 646 Erode 110 KV ANTHIYUR 230 KV 110KV Gobi feeder Breaker and CT only. For monthly maintenance of Breaker and CT possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 15:00 1 feeder being kept Approved Gobi SS end.Hence no SS will be affected. radial from gobi ss 1)Auto Transformer - 2 will be in Service. 2)110KV Pasumalai - Sembatty feeder will be kept radial from Sembatty end. 3)110KV Pasumalai - Alagarkoil -1 Feeder is kept radial 100 MVA AUTO - I, HVB - I, LVB - I , CT from Pasumalai feeding Avaniyapuram 4)110KV Pasumalai - Sakthisugars Feeders SUB TO LOAD 647 Madurai 230 KV PASUMALAI 230 KV Monthly Maintenance Works POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 14:00 1 Approved only. section between Pasumalai to Uranganpatti will be under LC 5)110/33-11KV Villapuram CONDITION SS and 110/33-11KV Anupanadi SS will be under Shutdown Relief - 65 MW. 6)Hence there is No interruption of Supply to any SS.

1) The sakthisugars feeder will be kept fed from Alkl end through 110KV Alagarkoil - Karaikudi Feeder so as to feed Uranganpatty SS, Nattarmanaglam , Nelmudikarai and Arasanoor SS upto Sakthisugars. 2) At Uranganpatty SS the switch towards Pasumalai 110KV Pasumalai - Sakthi Sugars # Section SS will be kept opened and earthed. 3)110KV Sakthisugar -Sivaganga Feeder will be in SUB TO TOTAL 648 Madurai 110 KV PASUMALAI 230 KV 1) Maintenance Works of BKR & CT, LI only. . POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 14:00 1 Approved between Pasumalai and Uranganpatty grid . 4)110KV Alagarkoil - Karaikudi Feeder will be radial from Karaikudi upto S/D Narasingampatti SS. 5) At Narasingampatti SS the switch towards Alagarkoil will be kept open. 6) 110/33-11KV Villapuram SS will be under Shutdown. 7)Concurrence obtained from SE/Metro / Madurai, SE/Madurai and SE/Sivaganga for the above arrangements

1) For Stringing the Panther Conductors from Loc No 33 to 34 2) Providing the jumpers at Loc.33 1)110/33-11KV Anupanadi SS will be under Shutdown . 2)110KV Pasumalai - Alagarkoil - towards Alagarkoil after replacement of DC Line on 1 feeder will be kept radial from Alagarkoil upto Vandiyur SS 3)110KV Pasumalai - 110KV Pasumalai - Alagarkoil -1 # Section 649 Madurai 230 KV PASUMALAI 230 KV DC Towers with Leopard Conductor into DC Line on Alagarkoil -1 feeder will be kept radial from Pasumalai upto Avaniyapuram SS 4) POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 14:00 1 0 Approved between Avaniyapuram and Vandiyur SS DC Towers with Panther conductor in the section Concurrence obtained from SE/Metro/ Madurai, SE/Madurai and SE/Sivaganga for the between from T.Loc 34 to T.Loc 44 by the TLC wing above arrangements and normalise the Feeder.

1) For Stringing the Panther Conductors from DP Loc No 33/2 to DP Loc No 33/1 2) For replacement 1) The sakthisugars feeder will be kept fed from Alkl end through 110KV Alagarkoil - of the existing Leopard Conductor by Panther Karaikudi Feeder so as to feed Uranganpatty SS, Nattarmanaglam , Nelmudikarai and Conductor from DP Loc No 33/1 to T.Loc 33 3) Arasanoor SS upto Sakthisugars. 2) At Uranganpatty SS the switch towards Pasumalai 110KV Pasumalai - Sakthi Sugars # Section Providing the jumpers towards Sakthi Sugars at DP SS will be kept opened and earthed. 3)110KV Sakthisugar -Sivaganga Feeder will be in 650 Madurai 110 KV PASUMALAI 230 KV POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 14:00 1 0 Approved between Pasumalai and Uranganpatty Loc No 33/1 after the replacement of DC Line on DC grid .4)110KV Alagarkoil - Karaikudi Feeder will be radial from Karaikudi upto Towers with Leopard Conductor into DC Line on DC Narasingampatti SS. 5) At Narasingampatti SS the switch towards Alagarkoil will be kept Towers with Panther conductor in the section from open. 6) 110/33-11KV Villapuram SS will be under Shutdown. 7)Concurrence obtained DP Loc No 33/ 2 to T.Loc 44 by the TLC wing and from SE/Metro / Madurai, SE/Madurai and SE/Sivaganga for the above arrangements normalise the Feeder

1) Replacement of defective insulator at location During the lc period: 1 Echantha SS will be FED From Veerasigamani # II by closing of 651 Madurai 110 KV KODIKURICHY 230 KV 1)110 KV Kodikuruchi-Veerasigamani# I 0 Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 REPEAT Repeat NO.22 and Tree clearance work 110KV AB Switch at echantha SS towards Veerasigamani SS. During the L.C Period HVII and LV II are tripped condition. There is no interruption to any Auto transformer II, HV II and LVII SUB TO LOAD 652 Madurai 230 KV PUGALUR 230 KV For Monthly Maintenance Work SS. 110KV Velliyanai SS and 110KV Manmangalam SS are proposed total shutdown. POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 Approved Breaker,CT's and LAS only. CODITION Load contain with in two auto transformer (I & III)

230 KV Pugalur - Pudansanthai feeder During the LC period, there will be no supply in 230 KV Pugalur - Pudansanthai feeder SUB TO LOAD 653 Madurai 230 KV PUGALUR 230 KV 1. Monthly maintenance work, 2. Line Patrol Work POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 Approved Breaker, CT & line entire since other end also availing L.C on the same period. CONDITION

No SS will be affected . During the above LC period all 110KV radial feeders will be fed a) Arni-I feeder switch No.94 alignment work. b) from 100 MVA Auto Transformer-II. 110KV Arni-I, II, Sipcot-I, II, & III will be kept in Off PROGRAMMED TUTICORIN -AUTO 230 NOT Subject to EE/SLDC/ 654 Madurai 110 KV On 110 KV Northern Bus entire 110KV Arumuganeri -I CT to switch Jumper condition at Auto SS end and are radial from other end. 110KV Manjalneerkayal SS will Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 ALONG WITH KV POSSIBLE Madurai approval changing be radialy fed from 110KV Arni-SS. 110KV Vagaikulam SS, 110KV Kombukaranatham TOTAL S/D SS and 110KV Town SS will be radily fed from 230KV Sipcot SS.

common spell AOH LC Approved for 19 days from 15.04.2017 08:00 hrs to 03.05.2017 17:00 hrs a)For drinking water purpose, pondage storage is kept as it is (present level schedule :172.79m storage:213 mcft ).Total depletion of pondage works will not be carried out GENERATI On Unit I & II complete with their internals approved by during The common spell AOH Period and the work will be carried out accordingly. b) 655 Erode NG LOWER METTUR 3 along with Power Transformers, GC Breakers To carryout Common Spell AOH works. possible Sat, 15-Apr-2017 8:00 Tue, 18-Apr-2017 17:00 4 director operation Approved During Common spell AOH, Both units will be under shutdown and all the 110kv feeders STATIONS and Barrage Gates . and director Will be in service except one day (Common Bus LC). c) Unit - I is under LC from generation 26.03.2017 to 14.04.2017 for independent spell AOH as per Schedule approved by CE/Hydro/Chennai. occ approved and HV & LV SIDE - ITS ENTIRE During 400/230 KV Auto Transformer II LC Period, 400/230 KV Auto Transformer I will be subject to the 656 Erode 400 KV Salem 400 KV Monthly Maintenance Work possible Sat, 15-Apr-2017 8:00 Sat, 15-Apr-2017 14:00 1 Approved in Service Condition. Hence there will be no interruption of supply. other auto tr BREAKERS, JUMPERS & SWITCHES laoding limit

CHECKANURANI SW During the LC period no feeders will be affected,All the 230KV Feeders will be transferred 657 Madurai 230 KV 230KV A-Bus Entire For Monthly maintenance works POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 0 Approved STATION 230 KV to B-Bus which is in standby condition

During the LC period evacuation will be done through 230KV Valuthur - Karaikudi and 658 Madurai 230 KV VALUTHUR 230 KV 230KV Valuthur - Kavanoor feeder entire. Tree cutting work POSSIBLE Sat, 15-Apr-2017 10:00 Sat, 15-Apr-2017 17:00 1 0 Approved Alagarkovil feeders.

A) 110 KV KAVANOOR-KAMUTHI 400 KV SS # BR. & C.T. B) 110 KV KAVANOOR- FEEDER TO BE KEPT RADIAL FROM KAMUTHI 400 KV SS TO KAMUTHI 110 KV SS MONTHLY MAINTENANCE WORKS AND LINE 659 Madurai 230 KV KAVANOOR 230 KV KAMUTHI # SEC. BET. KAVANOOR & INCLUDING KAMUTHI, TAMILPADI. KADALADI TO BE UNDER TOTAL SHUTDOWN; POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 0 Approved MAINTENANCE WORKS KAMUTHI (INCLUDING KADALADI SPUR L.R. 18.6 MW LINE) 110 KV KAVANOOR-KAMUTHI # SEC. BET. FEEDER TO BE KEPT TIED BET. KVNR & KMTHI 400 KV SS. SEC. BET. KMTHI TO 660 Madurai 110 KV KAVANOOR 230 KV KAMUTHI 110 KV SS TO TAMILPADI 110 LINE MAINTENANCE WORKS TMPDI WILL BE UNDER LC. TAMILPADI SS LOADS TO BE TRD. TO ANPKM POSSIBLE Sat, 15-Apr-2017 13:00 Sat, 15-Apr-2017 17:00 1 0 Approved KV SS FEEDING OR TAMILPADI SS TO BE UNDER TOTAL SHUTDOWN; L.R. -8 MW

PUDHANCHANTHAI 230 230KV Pugalur feeder CB, CTs, CVTs, Wave During LC period230KV Unjanai and Deviakurichy feeders will be kept connected to other feeders will 661 Erode 230 KV For regular maintenance works. possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 Approved KV Traps and 230KV Switches. grid.No supply interruption. cater to the loads

On a) 110KV DVKT #'r Bkr & Ct's b) 110KV During the Lc Period 1) Sakkavayal SS Under TSD 2) DVKT SS will be fed from 110KV 662 Madurai 230 KV KARAIKUDI 230 KV 1)For Monthly Mtc Work.2)Line Replacement work. POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 0 Approved DVKT # S/B KKDI - Sakkavayal. KKDI - VLDR Grid #'r. Hence there will be interruption of Supply.

PALLAKAPALAYAM 230 subject to the load 663 Erode 110 KV 110KV BKB-I feeder CT,Breaker Monthly maintenance work Radially from other end possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 Approved KV condition existing 1)TO CARRYOUT OFFLINE WATER WASH GENERATI 64 MW GAS TURBINE GENERATOR AND ACTIVITES IN GAS TURBINE. 2)TO ATTEND GAS There will be no Generation from KGTPS during the above period and there will be no SUB TO GRID 664 Madurai NG KUTTALAM POSSIBLE Sat, 15-Apr-2017 0:00 Mon, 17-Apr-2017 0:00 3 Approved 37 MW STEAM TURBINE GENERATOR TURBINE GENERATOR CURRENT supply interruption to any other SS. CONDITION STATIONS TRANSFORMER OIL LEAK.

During LC period 110KV Kovilur - Trichy # will be radial from Trichy upto Puthanatham RENGANATHAPURAM 110KV Kovilur - Trichy # Section between SUB TO S/D OF Subject to EE/SLDC/ 665 Madurai 110 KV Tree Cutting Works SSIntermediate SS 110KV Eriodu SS and 110KV Palayam SS avail total POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 16:00 1 230 KV Eriodu and Puthanatham SS PUDURPALAYAM Madurai approval shutdown.110KV kovilur - Trichy # radial from kovilur upto 110KV Eriodu SS

1. During the LC period the 110kv Radaapuram SS is proposed to take Total SD on 1)230KVAuto Tr, HV&LV Br.(2)110kv bus. 15.04.2017.from 09.00 to 17.00hrs. (If 110kv Radapuram not taken Lc the ss willbe fed (3)110kv Radhapuram fdr,Br, CT 1.Maintenance work of 110kv Bus& Auto.Tr. from 110kv SR.Pudur-Arumuganeri fdrII.) 2) 110kv Navaladi SS willbe fed from 110kv SUB TO WIND 666 Madurai 230 KV UDAYATHUR 230 KV only(4)110kv sankaneri fdr.Br. Ct (2)Introduction of LBB protection in all 110kv br. by POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 14:00 1 Approved Sankaneri -Udayathoor feeder of Sankaneri ss. 3)There will be no supply to 110kv GEN Only(5)110kv Samugarengapuram fdr. Br. Ct GRT wing /SR.Pudur Samugarengapuram 10 (1) SS suzlon SS. Samugarenagpuram ss proposed to avail SD only. on 15.04.2017 during the LC period

During the LC period the 110KV Ullikkottai SS, 110KV Okkanadu Kelaiyur SS & 110KV 110KV Thiruvarur - Mannargudy Feeder sec Line premansoon inspection and Rectification work, SUB TO LOAD 667 Madurai 110 KV THIRUVARUR 230 KV Mannargudy SS radially fed from T(K)GTPS Generating station. Hence there will be no POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 Approved between Thiruvarur and Manarkudi Beaker, CT's and Isolator maintenance work. CONDITION interruption of supply to any other substation.

During the LC period, (1) 110 KV Peedampally SS loads will be transferred to 230 KV subject to eht OTHAKKAL MANDABAM 110KV OKM-Sulur # section between 230KV for P.M.I works by lines wing and monthly Arasur SS.(2) Supply interruption to L&T EHT Service.(3) 110KV Edayarpalayam SS 668 Erode 110 KV possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 14:00 1 concurrence and Approved 230 KV OKM SS and 110KV Edayarpalayam SS. maintenance works. already fed from 110KV OKM-Negamam II feeder of 230KV OKM SS.Hence, No SS will transfer of loads be affected.

110kv SBT - THENI II # Bkr, CTs and sec. During the LC period the feeder will be radial from other end upto Nilakottai SS. Hence no 669 Madurai 230 KV SEMBATTY 230 KV 1. Monthly maintenance work2. Tree cutting work POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 0 Approved bet. SBT and Nilakkottai SS interruption to any SS.

subject to 230 KV MYVADI - KADAMPARAI - II utilization of 670 Erode 230 KV Udumalpet 400 KV MONTHLY MAINTENANCE WORK BOTH END AVAIL LC possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 Approved FEEDER BREAKER, CT AND LINE ENTIRE kadamparai machines subject to sldc 110 KV TASPL Feeder( Neyveli Feeder- II) 671 Erode 110 KV DEVIAKURICHI 230 KV For Monthly Maintenance work 110 KV Neyveli # II will be kept radial from TS -I end. possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 chennai Approved Breaker and CTs. concurrence

110KV Arani Link Feeder Breaker and Its During the Period of Shut down the 110KV Arani SS availing Total Shut down. Hence 672 Chennai 230 KV ARNI 230 KV For Monthly Maintenance Work. approved Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 14:00 1 0 Approved 110KV CTs and Line Isolator there will be no interruption of Supply. For Monthly maintenance work, HV I Breaker During the period of shutdown,the 110KV Arani SS ( 55 MW)availing Total Shut down. 230/110KV Auto Transformer No I,HV I 673 Chennai 230 KV ARNI 230 KV Monthly Maintenance work, 230 KV CTs and 230KV The Auto Transformer II & III will cater the station Loads. Hence there will be no approved Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 14:00 1 0 Approved Braeker,230KV CTs,110KV LV I Breaker Isolators Bolt Nuts replacement work interruption of Supply During the Period of Shut down the 110KV Vembakkam SS availing Total Shut down. 110 KV Arani-Kancheepuram Feeder, Monthly Maintenance work, CT Clamp, and Bolt 674 Chennai 230 KV ARNI 230 KV 110KV Mangal SS loads will be transferred to 400KV S.V.Chattiram through 110KV approved Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 14:00 1 0 Approved Breaker,110KV CTs Line Isolator Nuts replacement work. Kancheepuram SS. Hence there will be no interruption of Supply. subject to the Auto Transformer II,HV II & LVII Breaker with 675 Erode 230 KV THINGALUR 230 KV Monthly Maintenance. 110KV Erode SS Availing TSD. possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 14:00 1 other auto tr Approved CTS. loading limit

parallel switch to 676 Erode 110 KV THUDIALUR 230 KV 110KV Bus coupler Br & CTs For monthly mtce works Auto Transformer I & II parallel switch will be closed possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 14:00 1 Approved be closed

subject to the 110KV Ponnapuram - Pethapampatty # 1.110KV PETHAPPAMPATTI FEEDER WILL BE KEPT RADIAL FROM 230KV UDT feeder being kept 677 Erode 110 KV PONNAPURAM 230 KV breaker & CTsand Line upto s/s of FOR MONTHLY MAINTENANCE WORKS. S.S./110KV UDT-PNPM FEEDER UPTO KOTTAMANGALAM S.S.2.HENCE NO S.S. possible Sat, 15-Apr-2017 10:00 Sat, 15-Apr-2017 17:00 1 Approved radial from udpt ss Kottamangalam S.S. WILL BE AFFECTED. end

During the LC perioda)230KV Gurubarapally feeder breaker will be in handtrip condition 1. other feeders at both ends since maintenance work programmed at both ends.b)230 KV will cater to the Vinnamangalam # breaker, 230 KV Thiruvalam # breaker & 230KV MTPS # Breaker will loads; 2. north bus be in Handtrip condition at Singarapet end and radial from other end. c) 230 KV BC 230 KV Gurubarapally # Breaker, CTs & line To carry monthly maintenance work by 1. possible 2. lc issue would Approved Subject to 678 Erode 230 KV SINGARAPET 230 KV breaker will be in off condition.d) 230 KV Salem #, 230 KV Tiruvannamalai #, 230 KV Arni Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 isolators and 230KV North Bus AEE/MTC/230 KV SS / SPT postponed overload the 230 EE/SLDC approval # will be in service. (Now the 230KV Arani # is radial condition from Singarapet end, if kv necessary the 230KV Arani # may be tied at Arani SS end to manage the Singarapet SS vinnamangalam to loads)e) 230 KV GC Breaker, 3 nos of Auto transformers and all 110 KV feeders will be in shoolagiri feeder service, hence no interruption of supply. subject to the feeder being kept 679 Erode 110 KV ARASUR 230 KV For Monthly maintenance work. possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 12:00 1 Approved Breaker and Its CTs. Karuvalur SS. radial from karuvalur ss 110KV Puthansanthai-Pugalur feeder line other feeders will 680 Erode 110 KV UNJANAI 230 KV for attending strand cut During the LC period the Pugalur SS avaling total LC on the same feeder possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 Approved entire cater to the loads

subject to the 100MVA Auto Transformer-I, HVI, LVI 2Nos. 100 MVA Auto Transformer-II & III will be in service and adequate to share the 681 Erode 230 KV SALEM AUTO 230 KV Monthly Maintenance work. possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 other auto trs Approved Breakers & their CTs loads. There will be no interruption to any other SS or feeder. loading limit

subject to the wind 110KV Ponnapuram # I Breaker, CTs, 682 Erode 110 KV INGUR 230 KV MONTHLY MAINTENANCE WORKS DEPENDING UPON LOAD CONDITION possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 14:00 1 generation support Approved ,Isolators and Line side Isolator being available subject to the Autotransformer I and its HV & LV I Breakers 683 Erode 230 KV INGUR 230 KV MONTHLY MAINTENANCE WORKS 1.Kangeyam SS Total Shutdown- 40 MW2.DEPENDING UPON LOAD CONDITION possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 14:00 1 other auto trs Approved loading limit

GUMMIDIPOONDI 230 Monthly Maintenance work, CT clamp and bolt nuts 684 Chennai 110 KV 110KV Panjetty feeder bay During the period of shutdown the 110KV Panjetty SS availing total shut down approved Sat, 15-Apr-2017 10:00 Sat, 15-Apr-2017 17:00 1 0 Approved KV replacement work

During the LC period,1) this feeder will be radial from Alundur 230 KV SS upto Thuvakudi 1) For monthly maintenance works by the 110 KV SS,2) all other 110 KV feeders will be in tied condition,3) concurrence has been 110 KV Thanjavur - Alundur feeder, breaker, AEE/Mtce/Thanjavur,2) For carrying out premonsoon SUB TO LOAD 685 Madurai 110 KV THANJAVUR 230 KV obtained from Alundur 230 KV SS for radial feeding,4) 110 KV Thuvakudi & POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 Approved CT & LI. inspection & rectification works by the CONDITION Thiruverambur SS will avail shutdown on the same day,5) no supply interruption to any AEE/Lines/Thanjavur. SS.

1)230KV Deviakurichi-Neveli(TASPL) II Feeder breaker & CT's Maintenance availing 110KV Deviakurichi-Neveli(TASPL) II subject to sldc Deviakurichi SS.2)Chennasalem 110KV SS supply availing Deviakurichi-Neveli I Feeder 686 Erode 110 KV SALEM AUTO 230 KV Feeder(section Between Deviakurichi 230KV Road & Railway crossing jumpers checking. possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 chennai Approved 2)110KV Deviakurichi-Neveli(TASPL) Feeder series switch at Vappur 110KV SS towards SS -Vappur 110KV SS) concurrence Deviakurichi side will be Kept Opened.3)There will be no interruption of supply to any SS.

1) To carryout Maintenance in the equipment's by AEE/Maintenance/Palladam2) To carryout Premonsoon inspection in the line by occ approved and 230 KV Palladam - PGCIL feeder During LC period 1) Other 2 Nos 230 KV feeders will be in service2) OCC approval 687 Erode 230 KV PALLADAM 230 KV AEE/Lines/Palladam3) To make LILO arrangements possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 subject to the load Approved breaker,CT's and Line isolator with entire Line obtained3) No other sub station will be affected to the newly erected line for 230 KV Tiroppur SS by condition existing AEE/TLC/Palladam4) To carryout Relay testing by AEE/P&C/Palladam 1) To carryout Monthly maintenance works on subject to 110 KV palladam - Santhaipettai feeder equipments by AEE/Maintenance/palladam2) To During LC period 1) 110 KV Santhaipettai SS and 110 KV Arulpuram SS availing total santhaipettai ss 688 Erode 110 KV PALLADAM 230 KV breaker,CT's and Line side isolator with entire possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 15:00 1 Approved carryout Premonsoon inspection on line by shut down2) No other sub Station will be affected and arulpuram ss Line AEE/Lines/Palladam availing tsd During the period of L/C time,1. 110 KV Samuthiram SS availing total S/D,2. 110 KV Tiruvannamalai SS will be fed from 110 KV T.V.Malai - Villupuram #,3. 110 KV Kanji 1. Autotransformer - I, Breaker, CT's and THIRUVANNAMALAI 230 feeder loads (Kanji SS, Adamangalam SS & Solar Generation) will be radially fed from 689 Chennai 230 KV LAS2. 110 KV Eastern bus and 3. 110 KV Monthly maintenance work approved Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 17:00 1 0 Approved KV 230 Kv Arni Substation.4. Autotransformer - I will be OFF condition,5. 110 KV Bussection Bus section breaker & CT's only Breaker will be OFF condition6. Autotransformer - II will be in service and cater the station loads. Hence there is no interruption of supply please.

GENERATI other units will be 690 Erode NG PYKARA UNIT 5 FOR MONTHLY MAINTENANCE WORK NIL possible Sat, 15-Apr-2017 8:00 Sat, 15-Apr-2017 17:00 1 Approved available STATIONS

Durind the period of LC The 110 KV Nathapattu SS will be availing total shutdown. And 110 KV Cuddalore - Nathapattu # breaker 691 Chennai 110 KV CUDDALORE 230 KV For monthly maintenance works approved Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 17:00 1 0 Approved Feeder. Hence no interruption of supply. Hence NO Interruption of SupplyConcurrence obtained from SE/O/Villupuram

GCC Wing work - For the existing 230 KV SC line of Durind the period of LC 230 KV Eachangadu SS will be fed from 230 KV Samyapuram Neyveli TS-I to Eachangadu feeder from Loc. No 16 feeder from Trichy end. During the period of LC the loads of 110 KV Vridhachalam Ss and To be finalized 692 Chennai 230 KV CUDDALORE 230 KV to Loc. 134 for replacing the existing balance aged approved Sat, 15-Apr-2017 09:00 Tue, 18-Apr-2017 17:00 4 0 Pennadam SS are to be transferred to the 110 KV Neyveli -deviakurichi II feeder.Hence during April end Kundha conductors by Zebra conductors. Lc period NO Interruption of SupplyConcurrence obtained from SE/O/Villupuram from 15.04.2017 to 28.04.2017(14 days)

230 KV Thiruvalam SS to 110 KV Pakkam SS.ii. 110 KV Vaduganthangal SS of 693 Chennai 110 KV THIRUVALAM 230 KV For EHT Line Maintenance Works approved Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 14:00 1 0 Approved entire. VEDC/Vellore and 110KV Pakkam SS of TEDC/Thirupattur are availing total Shutdown.Hence there will be no interruption of supply please. During the period of LC i) The 110KV Katpadi SS, 110KV Vaduganthangal SS, OF VEDC/Vellore and 110KV Pakkam SS of TEDC/Thirupattur are availing Total Shutdown Breakers and its Cts., for fixing of Differential on 15.04.2017. The Total Shutdown approved and concurrence obtained by Chief i)For fixing of Differential relay in Auto Tr-I AND relay by GRT Wing /Thiruvalam and monthly O/L&E/L Relay in 110KV Gudiyattam Feeder by 694 Chennai 230 KV THIRUVALAM 230 KV maintenance work.ii) On 110KV Gudiyattam approved Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 17:00 1 0 Approved GRT Wing /Thiruvalam and monthly maintenance work. O/L & E/L Relay in 110KV Gudiyattam Feeder and monthly maintenance work Link-I # and 230KV Mosur feeders will be in service and cater the SS Loads. Hence there will be no interruption of supply please.

Ulundurpet 110KV SS Total shutdown maintenance work.It is proposed to to avail line clear and 230 KV TS II(Gen)-Ulundurpet feeder for carrying out the reley test by 695 Chennai 110 KV Ulundurpet 230 KV 110 KV Ulundurpet feeder. Total shutdown maintenance work. 0 Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 17:00 1 possible Approved GRT/Villupuram. So, on this day Ulundurpet auto ss load roughly 50 MW meet out by auto ss Villupuram.

The 110 KV Thiruvallur SS (32 MW) Availing Total shut down works .2). The remaining 110 KV Kadambattur SS (10 MW ) Loads will be transferred to 110 KV Thiruttani feeder 696 Chennai 110 KV MOSUR 230 KV For attending Monthly Maintenance work. approved Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 14:00 1 0 Approved Kakkalur SS Load (18 MW) transferred to 110 KV Avadi Grid SS Hence there will be no interruption of supply please.. 7) Approved by : SE / O / TVLM.

AUTO TRANSFORMER NO-IV, HV -IV , LV- the 110 KV Thiruvallur SS availing Total Shutdown work. 2)Auto Transformers I,II,&III are 697 Chennai 230 KV MOSUR 230 KV For attending Monthly Maintenance work. approved Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 17:00 1 0 Approved IV, CT'S AND LAS only. in service condition 3) Hence there will be no interruption of supply please..

ANUPPANKULAM 230 During the LC Period the 110 KV Anuppankulam SS will be availing total shut down. 698 Madurai 110 KV 110 KV Northern side CT Monthly maintenance work POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 14:00 1 0 Approved KV Hence no SS will be affected.

During the LC period 110 KV Bus coupler isolator 2 - 29 B will be opend. 110 KV PPTY SS, APKM SS, TTL SS, APK SS & VNR SS under total shut down. 110 KV APKM - RJPM For replacement of damaged moving contacts in Y - I feeder load will be transfer to 110 KV NNPT - ALGM feeder. RJPM - II feeder radially SUB TO ANUPPANKULAM 230 and B phases of bus side isolator No. 13 - 29 A ( 699 Madurai 110 KV 110 KV Northern side bus fed from other end. 110 KV T.Kallupatti feeder load will be fed from 110 KV APKM - POSSIBLE Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 PASUMALAI Approved KV Rajapalayam - I feeder) and lubrication and jumper Madurai feeder through 110 KV T. Kallupatti SS. 110 KV Capacitor Bank Br. will be Hand AUTO LOADING tightness of isolator switches work. Tripped Condition. Auto Tr. I, HV I , LV I BR. will be in tripped condition. Hence no SS will be affected. Concurrence from 700 Chennai 110 KV VILLUPURAM 230 KV 110KV Capacitor Bank-I For monthly maintenance works Capacitor bank-II will be in service 0 Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 17:00 1 0 SE/O

701 Chennai 110 KV Villapuram 110 KV 110 KV GC Breaker Breaker & CT maintenance works The Villupuram SS availing total shut down for maint,wroks. approved Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 17:00 1 0 Approved

GURUPARAPALLI 230 Monthly maintenance workin 230KV Singarapet 230KV Singarapet feeder breaker will be hand tripped and Bus side & Line side isolators other feeders will 702 Erode 230 KV 230KV Singarapet Feeder breaker possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 14:00 1 Approved KV feeder breaker & isolators will be opened. Concurrence obtained from SE/O/Thiruvalam & SE/KEDC/Krishnagiri cater to the loads

BASIN Annual Realy test by GRT / Metro / Chennai and 110 KV High court # will not be in serviece, all other 110 KV #s , 230 KV #s, Auto Tr 1,2,3 possible 11;00 to 703 Chennai 110 KV BRIDGE(GMRVASAVI) 110 KV High Court # 0 Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 17:00 1 Not approved Routine maintenance work. will be in service. 15;00hrs 230 KV

1.100 MVA AUTO TR.I & III Will be inservice cater the entire ss loads 2.110 kv s p koil# 704 Chennai 230 KV ACHRAPAKKAM 230 KV 100 MVA AUTO TR.II FOR MONTHLY MAINTENANCE WORK approved Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 12:00 1 0 Approved and Korattur-II # Will be radial from other end

110KV KPH2 to Tudiyalur 1 Feeder Tower No: 01 to Subject to to be scheduled 705 Erode 110 KV KUNDAH PH3 110KV KPH2 to Tudiyalur 1 Feeder 14. Pre-Monsoon Inspection work(PMI) and Bus and Line both end open condition Earth switch closed condition. postponed Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 17:00 1 EE/SLDC/Erode on a sunday Maintenance work. approval

During the above shutdown period ;1.80MVA Auto transformer II will be in OFF condition2.10MVA Power transformer -IV will be in OFF condition3.110KV Perumbakkam 706 Chennai 110 KV KITS 230 KV 110KV Eastern bus For bus maintenance works II # loads will be transferred to Perumbakkam I #4.110KV HCL & WIPRO # will be in OFF approved Sat, 15-Apr-2017 07:00 Sat, 15-Apr-2017 15:00 1 0 Approved condition(HT consumers ) will be asked to go on DG sets110KV Buscoupler I will be in OFF condition

subject to the 1.No SS will be affected during LC period. 2. 110 KV Kaspapettai SS has been TO TIGHTENING THE BOLT & NUTS IN JUMPER feederbeing kept 707 Erode 110 KV INGUR 230 KV 110 KV Erode-Elumathur # entire programmed total shut down on 15.04.2017 3.110 KV Elumathur SS supply can be fed possible Sat, 15-Apr-2017 9:00 Sat, 15-Apr-2017 14:00 1 Approved AT LOCATION NO : 1 at Erode 110 KV SS radial from from Pugalur 230 KV SS pugalur ss end

708 Chennai 230 KV Orgadam 230 kV Auto Transformer I & II MONTHLY MAINTENANCE WORK Total Shutdown Possible Sat, 15-Apr-2017 09:00 Sat, 15-Apr-2017 17:00 1 0 Approved

During the LC period the 110 KV KDR PH I will be avail total shut down as approved by sub to grid 709 Madurai 110 KV SRPUDUR 230 KV KDR PH I and KDR PH II Link feeder Tree clearance work POSSIBLE Sun, 16-Apr-2017 0:00 Sun, 16-Apr-2017 0:00 1 Approved EE/PHS/KDR. Hence no ss will be affected. condiiton subject to load 710 Chennai 230 KV KORATTUR 230 KV 100MVA AUTO TRANSFORMER - III General Maintenance work 100MVA Auto Transfomer - I & II will be inservice Possible Sun, 16-Apr-2017 09:00 Sun, 16-Apr-2017 17:00 1 Approved condition

GENERATI May be 711 Madurai NG KODAIYAR PH1 GENERATOR UNIT I Exciters monthly maintenance Generator I will be shut down. 0 Sun, 16-Apr-2017 9:00 Sun, 16-Apr-2017 17:00 1 programmed on Approved STATIONS sunday

P.H-I&II will be in shut down condition. Feeder will be radial condition. Hence no SS will DUE TO KOD 1 712 Madurai 110 KV KODAIYAR PH2 110 KV Bus New charger comissining POSISBLE Sun, 16-Apr-2017 9:00 Sun, 16-Apr-2017 17:00 1 Approved be affected. GEN

schedule GENERATI On Unit - 2 Generator, Turbine and its Note:From 16.04.2017 to 05.05.2017 (20 Days)For approved by During the L.C period the PWD demand will be met by Unit - 1 and both the 110 kv 713 Erode NG LOWER METTUR 1 internal and auxiliaries with Unit - 2 Power the Independent Spell Annual Overhauling works of possible Sun, 16-Apr-2017 0:00 Tue, 18-Apr-2017 17:00 3 director operation Approved Feeders will be inservice (110 kv MDPH # & 110 kv BPH - 2 #) STATIONS Transformer complete Unit - 2. and director generation

GENERATI subject to the grid 714 Erode NG KUNDAH PH3 Unit II For monthly maintenance work Unit under shutdown condition , SF6 breaker open condition possible Sun, 16-Apr-2017 8:00 Sun, 16-Apr-2017 17:00 1 Approved condition existing STATIONS

715 Chennai 230 KV KORATTUR 230 KV 230 KV Thiruverkadu-CMRL feeder Jumper Tightness at various location All other feeder will be in services To be discuss Sun, 16-Apr-2017 08:00 Sun, 16-Apr-2017 16:00 1 0 Approved

During the period of shutdown 110kv perambakkam ss load will be transferred to 230kv 716 Chennai 110 KV Sriperumbudur 400 KV 110KV SPR-Mosur-1 feeder and entire line Quarterly maintenance and jumper tightness work Possible Sun, 16-Apr-2017 09:00 Sun, 16-Apr-2017 17:00 1 0 Approved mosur ss For new line rerouting work to M/S Synfra EHT service from 230 KV Karuvalur SS feeding by 230 Kv Arasur - PGCIL 1 & 2 feeder releasing and stringing of 6 No. Zebra conductor in During the line clear ,1) Concurrence obtained from 230 KV EHT consumer m/s Synfra occ approval not Approved subject to 717 Erode 230 KV ARASUR 230 KV Breaker,CTs and line side isolator with line postponed Sun, 16-Apr-2017 9:00 Sun, 16-Apr-2017 18:00 1 the existing feederand stringing of 3 Nos. Zebra EHT service.2) remaining four numbers 230 KV Feeders will be in service. available SRLDC approval entire for both Feeders. conductor and 1 No. OPGW cable in new feeder by TLC/Mettupalayam wing of GCC/Coimbatore. occ approval not available for the 230 KV Eastern Bus, 230 Kv PGCIL -I & II During the line clear ,1)230 KV PGCIL -I & II #s,Auto Transformer-I and IV will be under For Annual Maintenance works in 230 KV Eastern pgcil feeders and Approved subject to 718 Erode 230 KV ARASUR 230 KV #s,Auto Transformer-I and IV and its Line clear.2)Concurrence obtained from 230 KV EHT consumer m/s Synfra EHT service postponed Sun, 16-Apr-2017 9:00 Sun, 16-Apr-2017 16:00 1 bus entire. further two auto SRLDC approval equipments AND 230 KV PT-I for supply interruption.2)Remaining four numbers 230 KV Feeders will be in service. trs will be out of service

a.110kv Panjetty feeder 110 kv Metrowater and 110kv Korattur feeder loads will be 1.For jumpering of 230kv OH line and 230kv Cable 719 Chennai 230 KV MANALI 230 KV 230kv Alamathy-1 feeder transferred to other endsAfter the LCa.230kv Alamathy-1 feeder will be in service via GIS To be discuss Sun, 16-Apr-2017 06:00 Sun, 16-Apr-2017 11:00 1 0 To be discuss point in Alamathy-1 feeder @400kv GIS SS end bay No-202 and 230kv line switch in Alamathy-1 feeder will be kept open at AIS SS end

subject to the Auto Transformer III and its HV ,LV side To carryout Monthly maintenance on equipment's by During LC period 1) other 3 Nos Auto Transformer will be in service2) Sun day holiday 720 Erode 230 KV PALLADAM 230 KV possible Sun, 16-Apr-2017 9:00 Sun, 16-Apr-2017 17:00 1 other auto trs Approved breaker ,CT's and LAS AEE/Maintenance/Palladam load relief available3) No other sub station will be affected loading limit

GENERATI UNIT-II GENERATTOR SF6 BREAKER, 721 Erode NG KUNDAH PH2 POWER TRANSFORMER AND ITS FOR MONTHLY MAINTENANCE WORK SF6 BREAKER OFF IN CONDITION TOP AND BOTTOM BUS OPEN IN CONDITION 0 Sun, 16-Apr-2017 9:00 Sun, 16-Apr-2017 17:00 1 Wrong entry Not considered STATIONS ACCESSIORIES

GENERATI subject to the grid 722 Erode NG PUSHEP UNIT 3 MONTHLY MAINTENANCE WORKS UNIT 3 IN SHUTDOWN CONDITION possible Sun, 16-Apr-2017 9:00 Sun, 16-Apr-2017 17:00 1 Approved condition existing STATIONS

723 Chennai 110 KV MOSUR 230 KV 110 KV SPR Feeder BREAKER & CT;s For attending Monthly maintenance work Tie opened at 230 KV MOSUR SS Possible Sun, 16-Apr-2017 09:00 Sun, 16-Apr-2017 14:00 1 0 Approved

GENERATI subject to the grid 724 Erode NG KUNDAH PH1 UNIT NO : 2 FOR MONTHLY MAINTENANCE WORK.. DURING THE LC PERIOD UNIT NO 2 WILL BE UNDER NOT S/B CONDITION.. possible Sun, 16-Apr-2017 8:00 Sun, 16-Apr-2017 17:00 1 Approved condition existing STATIONS BASIN 110 KV Chindadiripet # will not be in service, all other 110 KV #S , 230 KV #s , Auto TR Subject to CBD 725 Chennai 110 KV BRIDGE(GMRVASAVI) 110 KV Chindadiripet # Routine maintenance work 0 Sun, 16-Apr-2017 09:00 Sun, 16-Apr-2017 17:00 1 Approved 1,2,3 will be in service concurrence 230 KV 110KV KPH 2 to Thudiyalur Feeder 1 Tower No:16 subject to the load 726 Erode 110 KV KUNDAH PH3 110KV KPH 2 to Thudiyalur 1 Feeder Bus and Line both end open condition Earth switch closed condition. possible Sun, 16-Apr-2017 9:00 Sun, 16-Apr-2017 17:00 1 Approved to 33 condition existing

May be Monthly maintenance of 110 KV link feeder SF6 727 Madurai 110 KV KODAIYAR PH2 110 KV link feeder SF6 breaker P.H-I will be shut down. POSISBLE Sun, 16-Apr-2017 9:00 Sun, 16-Apr-2017 17:00 1 programmed on Approved breaker sunday A.ELECTRICAL- Monthly maintenance of 1)Gen.Tr.22.2 MVA-4Nos. 2)SF6 unit breaker GENERATI 3)110KV LAS set 4) 110KV CT&PT 5)110KV line May be 728 Madurai NG KODAIYAR PH1 GENERATOR UNIT.I, 110KV BUS switch & 6)Back washing of UGB & LGB oil Generator-I will be shut down. POSISBLE Sun, 16-Apr-2017 9:00 Sun, 16-Apr-2017 17:00 1 programmed on Approved STATIONS coolers.B.MECHANICAL- Monthly maintenance of sunday Governor oil re circulation and Governor oil cooler back washing.

729 Chennai 230 KV SPKoil230 KV 230 KV Kalpakkam feeder 1 Insulator Replacement work Possible Mon, 17-Apr-2017 09:00 Mon, 17-Apr-2017 17:00 1 0 Approved

100 MVA AUTO TRANSFORMER - I&II - One 110 KV Kits park feeder load ( 110 KV Madampakkam SS ) To be transferred to 230 KV 730 Chennai 230 KV VEERAPURAM 230 KV Quarterly Maintenance&OLTC Oil changing Possible Mon, 17-Apr-2017 09:00 Mon, 17-Apr-2017 16:00 1 0 Approved by one SS Kits park

subject to the load 731 Erode 230 KV MTPS MTPS-I to Singarapet Feeder Monthly maintenance works Programmed LC possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 Approved condition existing

On 110KV Kodikurichi - Kadayanallur- 1.110 KV Achanpudur SS,Kadayanllur SS will be radially fed from 230KV 732 Madurai 110 KV KODIKURICHY 230 KV Nalamanaickampatti # breaker with CT and For Monthly Maintenance work. POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 0 Approved Nalamanaickampatti SS.2.Hence No SS Will be affected Line Isolators.

110 kv erode to Subject to 110KV ERODE 2 feeder Breaker,CTs and 733 Erode 110 KV THINGALUR 230 KV Monthly Maintenance Works 110KV GANDHI Nagar SS will be fed from Erode SS. postponed Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 ingur feeder 2 lc EE/SLDC/Erode Line Isolators recommended approval

ANNUAL RELAY TEST WORK BY GRT WING DURING THE LC PERIOD THE FEEDER WILL BE RADIALLY FEED FROM OTHER subject to the load 734 Erode 110 KV KUNDAH PH5 110KV PH5 TO PH1 # 1 possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 Approved KUNDAH. END. condition existing

110 KV ERODE - INGUR II FEEDER DURING LC PERIOD NO SS WILL BE AFFECTED. NECESSARY CONCURRENCE subject to the load 735 Erode 110 KV Erode 110 KV MONTHLY MAINTENANCE WORK possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 14:00 1 Approved BREAKER AND CT OBTAINED FROM SE/EEDC/ERODE. condition existing

After Northern 1) 230 KV Pasumalai - Kayathar # BKR,CT 736 Madurai 230 KV PASUMALAI 230 KV a)Maintenance Works of BKR & CT,LI EE / O / 400 KV KYTR has also programmed POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 14:00 1 BUS LC at Approved and LI only. 2)Line Entire. Anupankulam

DURING THE LC PERIOD 110/22KV CHENNAMPATTI SS WILL AVAIL TOTAL SHUT subject to 110 KV BARRAGE III FEEDER BREAKER 737 Erode 230 KV ANTHIYUR 230 KV MONTHLY MAINTENANCE WORKS DOWN. OTHER END ALSO PROGRAMMED TO AVAIL LC ON THIS FEEDER.NO SS possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 15:00 1 chennampatty ss Approved CT AND LINE SWITCH WILL BE AFFECTED. availing tsd

On 100 MVA Auto Tr III, LV III, HV III breaker 738 Madurai 230 KV SRPUDUR 230 KV OLTC oil changing work. During the LC period Auto Tr I & II will be in service. POSSIBLE Mon, 17-Apr-2017 10:00 Mon, 17-Apr-2017 15:00 1 Sub to wind gen. Approved & CT only. During LC period, i)110 KV Tenkasi SS, 110 KV Shencottah SS,110kv kadayamSS, 110KV Kodikurichi -Tenkasi - Papanasam Rastha SS and Papanasam Power House will be fed from 110KV Kodikurichi -Tenkasi - 1)For replacement of defective Insulator at locations 739 Madurai 110 KV KODIKURICHY 230 KV feeder section between 110 KV Tenkasi SS - Papanasam Feeder. ii)110 KV AB switch towards Keelapavoor wind form at Tenkasi will POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 Sub to wind gen. Approved No.25&28, 110 KV Keelapavoor SS (WF)110/33KV) be kept opened. iii)110 KV Keelapavoor SS (WF)110/33KV) there will be no supply and availing monthly shutdown.

1) During the LC period there will be NO supply in P.Tr-2 and its 33KV feeders. 2) If there 230/33KV Power transformer-2 HV,LV 740 Madurai 230 KV AMUTHAPURAM 230 KV Monthly Maintenance Work is wind generation its 33KV feeders paralleled with other power transformers. 3) No SS POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 Sub to wind gen. Approved Breakers with CT's and its 33KV feeder will be affected. 4) Concurrence obtained from SE/NCES/TIN. 110KV ALKL- Karaikudy # section between During the L.C period the feeder will be radial from kkdi up to thiruppathur and radial up 741 Madurai 110 KV Alagarkoil230kv For tree clearence work POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 16:00 1 0 Approved melur & thiruppathur SS. to melur from ALKL further the 110KV Thaniamangalam SS will be under total shutdown.

Sub to tranferring 110 KV Anuppankulam- T.Kallupatti of ASTRO AND ANUPPANKULAM 230 For Tower to Tower inspection and tree cutting work 742 Madurai 110 KV feeder(spur line) section between During LC period , there will be no supply interruption. POSSIBLE. Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 T.Kallupatty to Approved KV in various locations. Erichanatham to T.Kallupatti SS. 110PSQ-ANPKM #

i) For carrying out AOH works on 110 KV Common a)On the same day, 110 KV Chennampatty SS and Koneripatti SS will be Programmed Bus, earth pit, earth resistance measurement works. subject to the load 743 Erode 110 KV LOWER METTUR 3 for availing total shutdown.b)During the LC period, the Unit I and II at BPH 3 will be in possible Mon, 17-Apr-2017 8:00 Mon, 17-Apr-2017 18:00 1 Approved GC and isolator and all 110 KV Feeders. ii) For carrying out annual relay test in 110 KV condition existing shutdown Condition for AOH Common spell. feeders by AEE / P&C / K.R.THOPPUR.

Sub to CHECKANURANI SW For Monthly maintenance works and Line 744 Madurai 230 KV 230KV CKNI-Indbharath Feeder Entire During the LC Period, there will be no supply in the entire feeder. POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 concurrance from Approved STATION 230 KV Maintenance works IND BHARATH

230 KV AUTO TRANSFORMER I HV & LV Feeder 1 sub to FOR MONTHLY MAINTENANCE WORK AND UTHAMAPALAYAM SS LOAD WILL BE TRANSFERRDE TO PERIYAR-THENI II #.NO 745 Madurai 230 KV then I 230 KV BREAKER WITH CT,AND 110 KV THENI- POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 13:00 1 concurrance from Approved PREMONSOON INSPECTION WORK. SUPPLY TO GAMESA AND REGEN KAMATCHIPURAM WIND SS. PERIYAR I# ENTIRE LINE. wind generator.

PUDHANCHANTHAI 230 230KV Bus-B, its PTs, Bus Coupler CB & During LC periodAll 230KV feeders and HV-I & II will be transferred to 230KV Bus-A.Bus subject to bus A 746 Erode 230 KV For regular maintenance works. possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 Approved KV CTs. Coupler CB will be hand tripped for LC works in 230KV Bus-B.No supply interruption. being in service

On 230/110KV Auto.Tf-2 & its allied During the L.C Period the Auto.Tf-2 Load will be contained other Auto.Tf-1 & 3 hence Sub to load 747 Madurai 230 KV KARAIKUDI 230 KV For Monthly Mtc Work POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 Approved Equipments. there will be No interruption of Supply. condition

During the Lc Period 1) 110KV Madagupatty SS & 110KV Kallal SS Under TSD.2)110KV On 110KV KKDI- SVGA # S/B Kallal & 748 Madurai 110 KV KARAIKUDI 230 KV Line Replacement work. KKDI- SVGA #'r will be radial upto Madagupatty SS. Hence there will be No interruption of POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 Sub to total s/d Approved Madaguppatty SS. Supply.

UNIT IN SERVICE. ALL 400KV FEEDERS KARAMADAI-I&II ,PALAVADI-I&II AND ICT- subject to the load 749 Erode 230 KV MTPSII 230KV MTPS-I FEEDER GENERAL MAINTENANCE WORKS. I&II ARE IN SERVICE. ALL 230KV FEEDERS GOBI,METTUR AUTO SS AND STANDBY possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 Approved condition existing TRANSFORMER EXCEPT THINGALUR FEEDER ARE IN SERVICE.

110KV Thiruvarur - T(K)GTPS Express Line Premansoon inspection and recfication work, 750 Madurai 110 KV THIRUVARUR 230 KV During the LC period there will be no interruption of supply to any other substation. POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 0 Approved feeder Breaker, CT's and Isolator maintenance work.

subject to the OTHAKKAL MANDABAM 110 KV OKM-Negamam I Feeder (Breaker, for annual relay testing work by GRT wing and During the LC period, 110KV OKM-Negamam I feeder will be kept radial from 110KV feeder being kept 751 Erode 110 KV possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 14:00 1 Approved 230 KV CT's & Line Switch) monthly maintenance works. Negamam SS. Hence, No SS will be affected. radial from negamam ss end

During the above shutdown period the 230 KV Eachangadu ss will be Radially fed from 230 KV Eachangadu-samayapuram #, Sub to Alandur 752 Madurai 230 KV EACHANGADU 230 KV FOR MONTHLY MAINTENANCE WORK 230 kv Eachangadu- Neyveli TSI #.Samayapuram SS end is also availing LC On that POSSIBLE Mon, 17-Apr-2017 10:00 Mon, 17-Apr-2017 17:00 1 Approved BREAKER, CT's, &LINE CVT ICT loading Day.

110KV SBT - PAsumalai# Bkr, CTS and sec. During the LC period, Sithargalnatham SS availing total shutdown and the feeder will be 753 Madurai 110 KV SEMBATTY 230 KV 1. Monthly maintenance work2. Tree cutting work POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 0 Approved bet SBT and Achampathu SS radial from other end upto Achampathu SS. Hence no interruption to any SS.

During the CL period S.V.Patti SS is availing total shutdown the feeder will be radial from 110KV SBT - Udumalpet # Bkr, CTs and sec. Sub to UDPT 754 Madurai 110 KV SEMBATTY 230 KV 1. Monthly maintenance work2. Tree cutting work other end upto Pappampatti SS. Concurrence obtained from other end. Hence no POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 Approved bet. SBT and Pappampatti SS.1 concurrance interruption to any SS.

230 KV MYVADI - UDUMALPET.LINK - II MONTHLY MAINTENANCE WORK AND C & R subject to the load 755 Erode 230 KV Udumalpet 400 KV BOTH END AVAIL LC possible Mon, 17-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 4 Approved FEEDER BREAKER, CT AND LINE ENTIRE PANEL REPLACEMENT WORK BY P&C condition existing

110Kv Kayathar-Kodikurchi Feeder Sec b/w During the LC period,I.Therkupatti ss will be radially fed from Kodikuruchi-Kanarpatti Tie 756 Madurai 110 KV KAYATHAR 230 KV for defective disc replacement at various locations POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 Sub to wind gen Approved Kayathar &Therkupatti feeder Hence No SS affected

subject to the feeder being kept 757 Erode 110 KV DEVIAKURICHI 230 KV 110 KV Krishnapuram Feeder Breaker ,CTs For Monthly Maintenance work 110 KV Krishnapuram Feeder radial from 230KV SS Perambalur end possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 Approved radial from perambalur ss For Breaker monthly Maintenance work, Breaker During the period of Shut down the 110KV Santhavasal SS availing Total shut down. Subject to 110KV Arani- Santhavasal Feeder Breaker, 758 Chennai 110 KV ARNI 230 KV Compressor oil replacement work, Line Isolator and Necessary Railway clearance will be obtained.Hence there will be no interruption of Possible Mon, 17-Apr-2017 09:00 Mon, 17-Apr-2017 14:00 1 concurrence of Approved 110KV CTs and Line isolator CT clamp Maintenance work. supply. Railways 759 Chennai 230 KV KORATTUR 230 KV 110 KV Alamathy-Periyappalyam feeder Jumper tightness at various location All other feeder will be in services Possible Mon, 17-Apr-2017 09:00 Mon, 17-Apr-2017 17:00 1 0 Approved subject to transfer 110KV Coimbatore-Arasur Feeder section 1.There will be no supply to KPR EHT Service.2.Sulur Railway EHT Service will be fed of loads to 110 kv 760 Erode 110 KV COIMBATORE 230 KV PMI Works by AE/Lines Coimbatore possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 16:00 1 Approved between 230 Arasur SS and 110KV Irugur SS from 110KV Arasur-Thingalur Feeder. arasur to thingalur feeder

230KV Myvadi- Udt.Link.II Breakers, CTs & Line 230KV MYVADI LINK II FEEDER BREAKER 230KV Myvadi- Udt.Link.II Breakers, CTs & Line entireFor C& R Panel replacement work subject to the load 761 Erode 230 KV UDUMALPET 230 KV entireFor C& R Panel replacement work By P&C possible Mon, 17-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 4 Approved &LINE ENTIRE By P&C wing condition existing wing subject to the 110 KV RANGANATHAPURAM FEEDER feeder being kept SEC BETWEEN RANGANATHAPURAM AND MELKARAI PATTY WILL BE FROM 762 Erode 110 KV UDUMALPET 230 KV BREAKER AND LINE SEC BETWEEN UDT FOR MONTHLY MAINTENANCE WORKS possible Mon, 17-Apr-2017 0:00 Mon, 17-Apr-2017 0:00 1 radial from Approved 230KVSS RANGANATHAPURAM AND MELKARAI PATTY renganathapuram ss end Jumbercone Tightness checking at MTPS 1- in subject to the load 763 Erode 230 KV METTUR AUTO 230 KV 230 KV MTPS 1-Singarapet entire Programmed LC at MTPS 1- on 17.04.2017 possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 14:00 1 Approved Singarapet bay condition existing To carry monthly maintenance work by During the LC period both ends Maintenance work programmed and hence no interruption subject to the load 764 Erode 230 KV SINGARAPET 230 KV 230 KV MTPS # Breaker, CTs & line isolators possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 15:00 1 Approved AEE/MTC/230 KV SS / SPT of supply condition existing

230KV SMPM-EACHANGADU # 1.During the above Shutdown Period 230KV SMPM SS will be radial from 230KV TRICHY Monthly Maintenance work, line Patrol work by Sub to Alandur Subject to EE/SLDC/ 765 Madurai 230 KV SAMAYAPURAM 230 KV Breaker,CT's , Line Isolators and entire line SS . 2.Other end Eachankadu SS also availing LC on that day. 3.Concurrence obtained POSSIBLE Mon, 17-Apr-2017 10:00 Mon, 17-Apr-2017 17:00 1 AE/Lines/Kallakudy. ICT loading Madurai approval portion. from Trichy Auto SS 4. No interruption to any other 110 KV SS.

110KV Sankaneri-Udayathur feeder Breaker For monthly maintenance & GRT Annual Relay During the LC Period 110KV Udayathoor feeder Supply Radially upto NavalladySS.Hence 766 Madurai 110 KV SANKANERI 230 KV POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 14:00 1 Sub to wind gen Approved CTS&Lineswitches. Testing purpose. NO ss will be affected.

110 KV Arasur Local SS GCCB and 110 KV subject to arasur 767 Erode 110 KV ARASUR 230 KV For Total Shutdown works in Arasur local SS. During the line clear , 110 KV CB-III will be out of service. possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 14:00 1 Approved CB-III ss tsd

On 100 MVA Auto Tr III, LV III, HV III breaker a.OLTC oil changing work. b.Annual relay testing 768 Madurai 230 KV SRPUDUR 230 KV During the LC period Auto Tr I & II will be in service. 0 Mon, 17-Apr-2017 10:00 Mon, 17-Apr-2017 15:00 1 Repeat Approved & CT only. work

769 Chennai 230 KV manali230kv 230KV Manali - ETPS Jumper tightness. Tower to Tower inspection. All other feeder in service. Possible Mon, 17-Apr-2017 08:00 Wed, 19-Apr-2017 18:00 3 0 Approved

subject to 110 KV K.R.Thoppur Feeder -II Breaker CT's 110 KV K.R.Thoppur feeder - II will be radially fed from other end. 110KV Kandampatty 770 Erode 110 KV SALEM AUTO 230 KV Monthly Maintenance work. possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 kandampatty ss Approved and line Isolators. SS will be availing total shutdown. There will be no interruption to any SS or feeder. availing tsd

After Northern Subject to 230KV Madurai feeder Main breaker (202- During the LC period there will be no supply in 230KV Madurai feeder Main breaker (202- 771 Madurai 230 KV kayathar230kv Monthly Maintenance work POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 BUS LC at Normalisation of Bus 52), CT and CVT only 52), CT and CVT only. hence no substation affected. Anupankulam LC at Anupankulam

110KV Erode II # Breaker, CTs, Isolators and subject to the load 772 Erode 110 KV INGUR 230 KV MONTHLY MAINTENANCE WORKS DEPENDING UPON LOAD CONDITION possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 14:00 1 Approved Line side Isolator condition existing subject to the Auto Transformer II and its HV & LV Breakers 773 Erode 230 KV INGUR 230 KV MONTHLY MAINTENANCE WORKS 1.Ingur SS Total Shutdown- 30 MW2.DEPENDING UPON LOAD CONDITION possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 14:00 1 other auto trs Approved loading limit

For making T-off arrangement in 110kv cable point, a.110kv ETPS-2 feeder tie will be open at Manali and ETPS endsAfter the LC110kv ETPS- 774 Chennai 110 KV MANALI 230 KV 110kv Manali- ETPS-2 feeder for linking of feeder to 110 kv GIS bus via GIS 2 feeder will be in service via T-off, Bay.No. 114 of GIS SS.Line switch of 110kv ETPS-2 To be discuss Mon, 17-Apr-2017 10:00 Mon, 17-Apr-2017 17:00 1 0 To be discuss Bay.No-114 feeder will be kept normally open at AIS SS end

For making T-off arrangement in 110kv cable point, a.110kv Korattur feeder loads will be transferred to other endAfter the LC:110kv Korattur Subject to CBD 775 Chennai 110 KV MANALI 230 KV 110kv Korattur feeder for linking of feeder to 110 kv GIS bus via GIS feeder will be in service via T-off, Bay.No. 113 of GIS SS.Line switch of 110kv Korattur To be discuss Mon, 17-Apr-2017 10:00 Mon, 17-Apr-2017 17:00 1 To be discuss concurrence Bay.No-113 feeder will be kept normally open at AIS SS end

During the LC period,1) this feeder will be radial from 230 KV Trichy SS upto 110 KV 110 KV Punalkulam - Trichy feeder.(Line Veeramarasanpettai SS, 2) 110 KV Thanjavur-Punalkulam feeder will be radial from 230 For carrying out premonsoon inspection works by 776 Madurai 110 KV Punalkulam 110 KV portion between 110 KV Punalkulam SS and KV Thanjavur SS upto 110 KV Punalkulam SS, 3) concurrence has been obtained from POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 0 Approved the AEE/Lines/Thanjavur. 110 KV Veeramarasanpettai SS) M/s.SICGILSOL Gases/Pudukudi (formerly Seva Gases) for blink operation,4) no supply interruption to any SS.

subject to the other auto trs loading limit; for i) 230/110KV AUTO II HV & LV Breakers and the tan delta CTs. ii) 110KV Karamadai BBPH II feeder For item no.i) 110KV Arasur & Thudialur feeders wiil be fed radially from Arasur & Item no i & ii for monthly mtce works and item no measurements, 777 Erode 230 KV karamadai230KV Bkr&CTs.iii) 230KV Karamadai-Kundah PH 3 Thudialur end. ii) Total shutdown availed by Mettupalayam SS. iii-v Lc one after other possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 Approved iii,iv & v for tandelta measurements by AE/Tandelta the possible feeder.iv) 230KV Karamadai-Arasur feeder. availed for Tandelta measurement. feeders will be v) 230KV Karamadai-Ingur feeder. issued for lc subject to the load condition existing

110kv Karuvalur - Arash I feeder breaker with 110kv paduvamplli SS total shutdown 110kv sellampampalyam and 110kv Karuvalur SS 778 Erode 230 KV KARUVALUR 230 KV For monthly maintenance work 0 Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 invalid lc Not considered line switch and CT's fed from Arash 230kv SS

subject to 110kv paduvamplli SS total shutdown and 110kv sellampampalyam SS fed from 230kv 110kv Karuvalur - Arasur II feeder breaker For monthly maintenance work and for PMI by paduvampalli ss 779 Erode 110 KV KARUVALUR 230 KV Arasur SS and 110kv Karuvalur SS fed from 110kv Karuvalur - Thekkalur feeder from possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 Approved with line switch and CTs palladam lines availing tsd and 230kv Karuvalur SS transfer of loads

Replacement of poor tan delta value CTs with new During the LC period there will be no interruption to any SS. Other end also applied on the 780 Madurai 110 KV KOVILKALAPAL 110 KV Thiruvarur Express feeder POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 0 Approved CTs. same day.

to be availed one 110KV MDPH Feeder I & MDPH II feeder one During the 110KV MDPH Feeder I LC period Feeder II will be in service.During the 110KV 781 Erode 110 KV METTUR AUTO 230 KV For Monthly maintenance work possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 by one subject to Approved by one MDPH Feeder II LC period Feeder I will be in service the load condition

110kv GC BREAKER AND 66KV ENTIRE 66/11KV ATHIPALLI SS, CHERAMBADI SS, GUDALUR SS AND UPPATTI SS WILL subject to tsd 782 Erode 110 KV PYKARA FOR MONTHLY MAINTENANCE WORK possible Mon, 17-Apr-2017 8:00 Mon, 17-Apr-2017 17:00 1 Approved BUS AVAIL TOTAL SHUT DOWN. relief

Durind the period of LC The 110 KV Chitharasur SS will be availing total shutdown. And 783 Chennai 110 KV CUDDALORE 230 KV For monthly maintenance works Possible Mon, 17-Apr-2017 09:00 Mon, 17-Apr-2017 17:00 1 0 Approved Line side isolator. supply.Hence NO Interruption of SupplyConcurrence obtained from SE/O/Villupuram

1)PMI Work by JE/Lines/Pollachi and quarterly mtce 110KV ALR-SLR FEEDER No-I&II CB,CT sph machines are 784 Erode 110 KV ALIYAR 230 KV work2)Tower replacement work at LOC 33 to 36 by During the LC period SLR PH all machine under shutdown condition possible Mon, 17-Apr-2017 8:00 Mon, 17-Apr-2017 16:00 1 Approved and line entire under sd erecting work by AE/TLC/UDT

ANUPPANKULAM 230 110 KV Capacitor Bank - II Br., CT. and line 785 Madurai 110 KV For monthly maintenance work. During the LC period the 110 KV Capacitor Bank - II will be Hand Tripped condition. 0 Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 14:00 1 0 Approved KV switch only. a)For Removal of dropper jumper of 230KV During the LC period, a) Auto Transformer-I, HV-I, LV-I will be under hand tripped ANUPPANKULAM 230 (a) 230KV Northern Bus entire (b) 230KV Anuppankulam - Madurai feeder ( Augmentation of condition and 230KV Anuppankulam - Madurai feeder and 230KV Anuppankulam - Sub to load 786 Madurai 230 KV POSSIBLE Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 12:00 1 Approved KV APKM - MDU feeder entire. 100MVA to 160MVA Auto Transformer work) b) Kayathar feeder hand tripped condition and Auto Transformer-II & III will be fed from condition Replacement of flash over disc at Loc no.255. 230KV Anuppankulam-Sterlite source only. b) The entire feeder will be no supply.

Jumber cone Tightness checking at MTPS -1 in 787 Erode 230 KV METTUR AUTO 230 KV 230 kv MTPS 1- singarapet entire Programmed lc at MTPS 1-on 17.04.17 0 Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 14:00 1 repeat of 53237 Not considered Singarapet bay

Monthly maintenance work at LMBPH - 3 feeder (i) LMBPH - 3 end will be avail common bus LC on the day.(ii) 110 kV LMBPH - 1 and KR LMBPH - 3 feeder equipment and its Isolator subject to load 788 Erode 110 KV LOWER METTUR 2 equipment and its Isolator and earth switch at Thoppur feeder will be in service.(iii) Unit - 1 & 2 stand by condition depending upon the possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 15:00 1 Approved and earth switch at LMBPH - 2 / Nerinjipettai condition existing LMBPH - 2 / Nerinjipettai PWD demand.

subject to the 1.Monthly Maintenance 110 KV Salem -I Feeder will be fed radially from salem feeder being kept 789 Erode 110 KV SINGAPURAM 230 KV 110 KV Salem -I Feeder(CT,Breaker) Monthly Maintenance end.2.Auto LC at salem end is on 03.04.2017 & 15.04.2017 & 21.04.2017 only.3.There possible Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 Approved radial from salem will be no interruption to the intermediate SS. ss end

110KV KPH2 to Thudiyalur 1Feeder Tower No:34 to to be scheduled 790 Erode 110 KV KUNDAH PH3 110KV KPH2 to Thudiyalur 1Feeder Bus and Line both end open condition Earth switch closed condition. postponed Mon, 17-Apr-2017 0:00 Mon, 17-Apr-2017 0:00 1 repeat of 53835 51 on a sunday

to be rescheduled 791 Erode 230 KV MTPS MTPS-I to MTPS-II Feeder Monthly maintenance works Programmed LC postponed Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 with mtps stage 3 Approved on 17.04.2017

to be rescheduled jumbercone Tightness work in MTPS 1 Bay structure 792 Erode 230 KV METTUR AUTO 230 KV MTPS 1 - MTPS II- feeder entire Programmed LC at MTPS 1 - on 19.04.2017 postponed Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 14:00 1 with mtps stage 3 Approved at MTPS II end on 17.04.2017 Subject to other feeders 793 Erode 230 KV MTPS MTPS-I to MTPH Feeder Monthly Maintenance works Programmed LC postponed Mon, 17-Apr-2017 9:00 Mon, 17-Apr-2017 17:00 1 EE/SLDC/Erode would overload approval

794 Chennai 110 KV SPKoil lines 110 KV Acharapakkam feeder 1 Quertaly maintenance work Possible Tue, 18-Apr-2017 10:00 Tue, 18-Apr-2017 17:00 1 approved Approved

230 kv salem to 230KV INGUR feeder breaker,CTs and Line 795 Erode 230 KV THINGALUR 230 KV Monthly Maintenance Works Other end also availing LC postponed Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 mtps feeder lc Approved Isolators recommended

DURING THE L.C PERIOD,1.AUTO TRNO :I LOADS WILL BE FED BY SALEM 400KV Subject to 1. 230KV & 110KV BUS SECTION equal division of 796 Erode 230 KV UNJANAI 230 KV FOR MONTHLY MAINTENANCE WORK 230KV FEEDER AND AUTO TR NO:II WILL BE FED BY P.CHANTHAI FEEDER.2. postponed Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 EE/SLDC/Erode BREAKER ,CT'S ONLY loads not feasible NALLUR AND JEDARPALAYAM 110KVSS LOADS WILL BE BY P.CHANTHAI 230KVSS. approval

230 kv salem to MONTHLY MAINTENANCE WORKS AND ALSO 797 Erode 230 KV INGUR 230 KV and Line side Isolator and 230 KV main Bus OTHER END ALSO LC AVAIL ON THAT DAY postponed Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 14:00 1 mtps feeder lc Approved NEW LAS ERECTION WORK & Auxillary Bus switch recommended

110KV T(K)GTPS - THIRUVARUR FEEDER (VIA: 110KV ULLIKKOTTAI SS, 110KV 1) DURING THE LC PERIOD 110/11KV OKKANADU KEELAIYUR SS, 110KV DUE TO SEC BW OKKANADU KEELAIYUR SS & 110KV FOR PREMONSOON INSPECTION WORK BY ULLIKKOTTAI SS RADIALLY FED FROM T(K)GTPS AND 110KV MANNARGUDI SS 798 Madurai 110 KV THIRUVARUR 230 KV POSISBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 TVR AND Approved MANNARGUDI SS), LINE PORTION AE/LINES/ PATTUKKOTTAI. RADIALLY FED FROM 230KV THIRUVARUR. 2) NO INTERRUPTION TO ANY Mannarkudi LC BETWEEN 110KV OKKANADU KEELAIYUR SUBSTATION. SS TO 110KV MANNARGUDI SS.

Present PWd Demand is 200C/S.During the LC period, the Papanasam-KYTR# (tied with Papanasam-KYTR# (tied with kodikurichi To be tied with 799 Madurai 110 KV ABAN For carry out monthly maintenance work kodikurichi ss) will be radial from other end and 110KV PPM-O.T patti# will be in service. POSSIBLE Tue, 18-Apr-2017 10:00 Tue, 18-Apr-2017 12:00 1 Approved ss)Breaker with CT Kayathar Hence no ss will be affected please.

Power transformer -III,HVBR-III,LVBR-III & During the lc period there will be no supply in entire Power transformer -III & 33kv feeders 800 Madurai 230 KV VEERANAM 230 KV Quarterly & Monthly maintenance work POSSIBLE Tue, 18-Apr-2017 10:00 Tue, 18-Apr-2017 17:00 1 sub to wind gen Approved 33KV Feeders of Micon-I,Micon-II,Micon-VI and concurrence obtained from SE/NCES/TIN.

On 230KV Kayathar - TTPS-I feeder breaker a)For monthly maintenance work. b) Tower to tower 801 Madurai 230 KV KAYATHAR 230 KV During the LC period, there will be no supply in the entire feeder. Hence no SS affected. POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 Sub to TTPS gen Approved with CT & entire line inspection work

On 230KV Kayathar - TTPS-II feeder breaker a) For Monthly Maintenance work b) Tower to tower 802 Madurai 230 KV KAYATHAR 230 KV During the LC period, Other end also availing the LC. Hence no SS affected. POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 Sub to TTPS gen. Approved with CT & entire line inspection work

During the LC Period 1.400KV Bus-2 in OFF condition,2.400KV SPR Feeder breaker and 400KV NCTPS-Stg 2-feeder-1 breaker in trip condition, Supply will feed through Tie-1 and Sunguvarchatram 400 Possible OCC 803 Chennai 400 KV 400KV BUS-2 Entire Monthly maintenance work Tie-2 Breakers Respectively3.Alamathi-2 feeder 1 in OFF condition,5.HV-2 Breaker and Tue, 18-Apr-2017 09:00 Tue, 18-Apr-2017 17:00 1 0 Approved KV Appd. 129/173 HV-4 Breaker in Trip condition,supply will feed through Tie-3 and Tie-4 for Auto Transformers 2&4. subject to the ANNUAL RELAY TEST WORK BY GRT WING DURING THE ABOVE LC PERIOD THE FEEDER WILL BE RADIALLY FEED FROM feeder being kept 804 Erode 110 KV KUNDAH PH5 110KV PH5 TO PH1#2 possible Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 Approved KUNDAH OTHER END.. radial from the other end subject to the 110 KV CAPACITOR BANK II BREAKER,CT DURING LC PERIOD NO SS WILL BE AFFECTED. NECESSARY CONCURRENCE 805 Erode 110 KV Erode 110 KV MONTHLY MAINTENANCE WORK approved Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 14:00 1 voltage profile in Approved AND ITS CELLS OBTAINED FROM SE/EEDC/ERODE. the grid

Subject to 110KV Anthiyur-Barrage PH-III feeder During the LC period 110KV Anthiyur-Barrage PH-III feeder will be kept in radial condition llc already applied 806 Erode 110 KV ANTHIYUR 230 KV For monthly maintenance of Breaker and CT postponed Tue, 18-Apr-2017 0:00 Tue, 18-Apr-2017 0:00 1 EE/SLDC/Erode breaker and CT only. from Barrage PH-III end.Hence no SS will be affected. for 17.04.2017 approval

110 KV Pasumalai - Kinnimangalam (Theni) Sub to Pasumalai 807 Madurai 110 KV PASUMALAI 230 KV Maintenance Works of BKR & CT,LI EE / O / Kinnimangalam has also programmed POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 14:00 1 Approved # - I BKR & CT,LI only. Auto Load

On 110KV Kodikurichi-Alangulam- (i)For Replacement of defective Disc at location Kannarpatty # section between 808 Madurai 110 KV KODIKURICHY 230 KV No:4, and rectification of Jumper Bolt at loc No : 17 During LC period, POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 Sub to wind gen. Approved 110KVKeelapavoor SS - 110 KV A & 20 Keelaveeranam SS- 110KV Alangulam SS subject to the 110 KV KAVUNDAPADI FEEDER BREAKER SUPLY TO 110 KV KAVUNDAPADI SS MAY FED FROM 230 KV THINGALUR SS,NO feeder being kept 809 Erode 110 KV GOBI 230 KV FOR MONTHLY MAINTENANCE WORK possible Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 Approved AND CT'S WITH LINE SWITCH OTHER SS WILL AFFECTED radial from thingalur ss end During the L.C Period HV III and LV III are tripped condition.110KV Veppampalayam SS Auto transformer III, HV III and LV III Sub to load 810 Madurai 230 KV PUGALUR 230 KV For Monthly maintenance Work . and 110KV Thanthonimalai SS are proposed total shutdown.There is no interruption to POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 Approved Breaker,CT's andLAS only. condition any SS.load contain with in two auto transformer(I &II)

1. 110KV UNJANAI -NALLUR 110KV FEEDER BREAKER, CT'S AND LINESIDE FOR MONTHLY MAINTENANCE WORK AND GRT ISOLATOR ONLY.2. 110KV UNJANAI - 1. NALLUR AND T.GODE 110KVSS AVAILING TOTAL SHUTDOWN2. AUTO TR NO :I subject to the tsd 811 Erode 110 KV UNJANAI 230 KV ANNUAL RELAY TESTING WORK IN AUTO TR NO possible Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 Approved T.GODE FEEDER BREAKER, CT'S AND WILL CATER THE STATION LOADS. being realized :II AND IT'S DUE FROM 12/2016 LINESIDE ISOLATOR ONLY.3. AUTTO TR NO :II AND IT'S BREKER & CT'S ONLY.

During the L.C period another one 100MVA AUTO I will be service further 110KV 100MVA AUTO II ,HV,LV BREAKER THIRUPPALAI ,& Samayanallur SS will be under total shutdown, further if necessary the Sub to load 812 Madurai 230 KV Alagarkoil230kv for monthly maintenance work POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 12:00 1 Approved ,CT&LAS only 110KV ALKL-SMPTY 2 # Tie will be opened at ALKL end,hence there will be no condition interruption of supply please.

During the L.C period the feeder will be radial frompasumalai end further thiruppalai SS Sub to Pasumalai 813 Madurai 110 KV ALAGARKOIL 230 KV 110KV ALKL-PSQ 2 # breaker with CT only for monthly maintenance work will be under total shutdown, hENCE THERE WILL BE NO INTERRUPTION OF SUPPLY POSSIBLE Tue, 18-Apr-2017 12:00 Tue, 18-Apr-2017 15:00 1 Approved Auto Loading PLEASE.

110 KV Kinnimangalam- Theni - II feeder During the LC period, The 110 KV Aundipatti SS Load transferred to 110 KV CHECKANURANI SW For tower to tower inspection and Tree cutting work 814 Madurai 110 KV section between Kinnimangalam to Kinnimangalam- Theni - I # and Elumalai 110 KV Ss and Chinnakattalai 110 KV SS POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 0 Approved STATION 230 KV in various location. Kanavillaku SS. availing total shut down. Hence , There is no supply interruption at any other ss.

For attending Auto Transformer III HV,LV breakers, 815 Madurai 230 KV VALUTHUR 230 KV Auto Transformer III. During the LC period Auto Transformer I & II will be in service POSSIBLE Tue, 18-Apr-2017 10:00 Tue, 18-Apr-2017 17:00 1 0 Approved it's CT's and isolators Monthly maintenance work.

230KV/110KV AUTO TRANSFORMER-I,HV-I BREAKER WITH C.T,LV-I BREAKER WITH DURING THE L.C PERIOD 110KV ALANGULAM,110KV RADDIAPATTI AND 110KV NALLAPPANAYAKANPA C.T,110KV ALANGULAM FEEDER 816 Madurai 230 KV FOR MONTHLY MAINTENANCE WORK RAJAPALAYAM SS WILL BE AVAILING TOTAL SHUT-DOWN ON THAT DAY.NO SS POSSIBLE Tue, 18-Apr-2017 10:00 Tue, 18-Apr-2017 17:00 1 Sub to total s/d Approved TTY 230 KV BREAKER WITH C.T & 110KV WILL BE AFFECTED. RAJAPALAYAM FEEDER BREAKER WITH C.T

230 KV AUTO TRANSFORMER III HV& LV MONTHLY MAINTENANCE WORK.THE STATION LOAD WILL BE MANAGED OTHER 817 Madurai 230 KV then I 230 KV FOR MONTHLY MAINTENANCE WORK. POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 13:00 1 0 Approved BREAKER WITH CT. TOW AUTO TRANSFORMERS.

Sub to Pasumalai 818 Madurai 230 KV kinnimangalam 230 KV 110KV KNMLM - PSQ 1 # Monthly maintenance works for breaker and CT There will be no supply in the entire feeder POSSIBLE Tue, 18-Apr-2017 14:00 Tue, 18-Apr-2017 17:00 1 Approved Auto Load

The feeder will be radial from theni SS upto Ganavilakkuu SS. Andipatty SS will change over to Theni I feeder,110KV Chinnakatalai,Elumalai SS availing total shutdown. Line LC 819 Madurai 110 KV kinnimangalam 230 KV 110KV KNMLM -THENI II Monthly maintenance works for Breaker and CT POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 0 Approved also programmed by Lines /Ckni on Theni II # section between kanavilakku SS and KNMLM.

110KV THENI-KINNIMANGALAM II # DURING THE LC PERIOD 110KV K.VILAKKU , CHINNAKATTALAI,ELUMALAI SS WILL LINE MONTHLY MAINTENANCE AND 820 Madurai 110 KV then I 230 KV SECTION BETWEEN K.VILAKKU SS AND BE UNDER SHUTDOWN AND 110KV ANDIPATTY LOADS MAY BE TRANSFER TO POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 0 Approved PREMONSOON INSPECTION WORKS KINNIMANGALAM SS 110KV THENI- KINNIMANGALAM I FEEDER

PALLAKAPALAYAM 230 Auto Transformer-1 will be manage 110KV BKB-1# and Sankar-I# Load and Auto subject to the 821 Erode 110 KV 110KV Bus Coupler CT,Breaker Monthly maintenance work possible Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 Approved KV Transformer -II will be manage The 110KV Sankari-II#,Barrage-IV # and Thevur # load division of loads

RENGANATHAPURAM During LC period the feeder will be radial fed from SBT upto RNPM SSIntermediate SS 822 Madurai 110 KV 110KV RNPM - SBT III # Br,CT's Monthly Maintenance works POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 14:00 1 0 Approved 230 KV 110KV Vedasandur SS Avail total shutdown.

During the LC period , a) 110KV Trichy - Punalkulam feeder will be radially fed from Punalkulam 110 KV Grid SS upto 110KV Mathur SS. b) 110 KV Punalkulam feeder line a) For monthly maintenance works. b) Pre monsoon switch at 110 KV Mathur SS towards 230 KV Trichy SS will be kept open. c) 110KV Sub to Tanjore 823 Madurai 110 KV TRICHY 230 KV CTs , line isolator and line portion between POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 16:00 1 Approved inspection Mathur SS also availing total shutdown. d) Necessary concurrence obtained from other AUTO 230 KV, Trichy SS and 110 KV Mathur SS. end 230KV Tanjore SS. e)All other 110KV feeders will be In tied condition. f) No interruption of supply to any of the SS. subject to the OTHAKKAL MANDABAM 110 KV OKM-Negamam II Feeder (Breaker & For annual relay testing work by GRT wing and During the LC period, 110KV OKM-Negamam II feeder will be kept radial from 110KV feeder being kept 824 Erode 110 KV possible Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 14:00 1 Approved 230 KV CT's) monthly maintenance works. Negamam SS. Hence, No SS will be affected. radial from negamam ss end

DURING THE PERIOD OF SHUTDOWN , 50 MVA POWER TRANSFORMER-II WILL 50 MVA POWER TRANSFORMER-II &33 KV Subject to CBD 825 Chennai 230 KV TONDIARPET 230 KV FOR ROUTINE MAINTENANCE WORKS NOT BE IN SERVICE 33 KV TPT-I FEEDER LOAD TO BE TRANSFRRED TO Possible Tue, 18-Apr-2017 09:00 Tue, 18-Apr-2017 14:00 1 Approved TPT-I FEEDER concurrence ALTERNATE FEEDING.

110KV SBT- Alagarkovil II # sec. bet. During the LC period the # will be radial from SBT upto Kosavapatti and radial from other 826 Madurai 110 KV SEMBATTY 230 KV Tree cutting work POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 0 Approved Kosavapatti and V.K.Patti end upto V.k.Patti. (Concurrence obtained from M/s Ambika cotton mills)

subject to the Auto Transformer I will be in service. 110 KV Deviakurichy-Singipuram feeder I and II will 827 Erode 230 KV DEVIAKURICHI 230 KV For Monthly Maintenance work possible Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 other auto tr Approved Breakers and CTs be kept radial from Singipuram 230kv ss end loading limit 1)ICT- I in off condition 2)ICT- II in service for 230Kv feeder loads 3)230Kv Singarapet ICT - I, 230KV S.P.Koil feeder & 230KV feeder may be hand tripped if load on ICT-II reached above 280 MW4)230kv S.P.KOIL Possible (One 828 Chennai 400 KV Thiruvalam 400 KV Tandelta testing for ICT-I & 2 Nos.230 kv feeder CTs Tue, 18-Apr-2017 09:00 Tue, 18-Apr-2017 17:00 1 0 Approved Thiruvalam Link- I feeder FEEDER & 230kv Thiruvalam Link-I feeder kept in OFF condition after ICT- I put in to by One) service 5)400KV Alamathy -I feeder in service from its main breaker thro 400KV Bus-I

110KV Arani- Kannamangalam Feeder Monthly Maintenance work, CT Clamp, and Bolt During the Period of Shut down the 110KV Kilpallipet SS and 110KV Sathumadurai SS 829 Chennai 110 KV ARNI 230 KV Possible Tue, 18-Apr-2017 09:00 Tue, 18-Apr-2017 14:00 1 0 Approved Breaker,110KV CTs and Line isolator Nuts replacement work. are availing Total Shut down. Hence there will be no interruption of Supply

Already approved 830 Chennai 110 KV KORATTUR 230 KV 110 KV Alamathy-Periyappalyam feeder Jumper tightness at various location 110 KV Periyappalyam SS will be fed from 230 KV Gummidipoondi SS 0 Tue, 18-Apr-2017 08:00 Tue, 18-Apr-2017 16:00 1 Approved in 17th April 2017 Due to Auto Loading: TUTICORIN -SIPCOT On 230/110 KV Auto-I, HV-I and LV-I Â During the LC period, Auto Transformer II will be in service and there will be no NOT 831 Madurai 230 KV For monthly maintenance work. Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 programmed Not approved 230 KV breakers with CTs and LAS only. interruption in supply please. POSSIBLE along with total s/d 1)Line inspection and rectification work 2)Main II 832 Madurai 230 KV KADALANGUDI 230 KV 230KV Kadalangudy- PPN I feeder entire distance protection relay fixing work at Kadalangudy No interruption to any SS. All other feeders will be in tied condition. POSSIBLE Tue, 18-Apr-2017 10:00 Tue, 18-Apr-2017 17:00 1 0 Approved end.

App in 129 833 Madurai 400 KV kamuthi 400 KV Kanarpatty 400/110 KV ICT -III MONTHLY MAINTENANCE WORK NO FEEDER AFFECTED IN 110 KV SIDE POSSIBLE Tue, 18-Apr-2017 10:00 Tue, 18-Apr-2017 17:00 1 Approved occ/172

834 Chennai 230 KV Sriperumbudur 400 KV 230KV SV Chatram-Sipcot feeder entire line Line patrol and jumper tightness work During the period of shutdown 230kv spr-sipcot feeder will be in service Possible Tue, 18-Apr-2017 09:00 Tue, 18-Apr-2017 17:00 1 0 Approved

1.100 MVA AUTOTRANSFORMER-I WILL BE IN SERVICE.2.110KV ACK-VILLUPURAM 230/110,100MVA AUTOTANSFORMER-II I&II FEEDER WILL BE RADIALLY CHARGED FROM OTHER END.3.110KV ACK- 835 Chennai 230 KV ACHRAPAKKAM 230 KV TO CARRYOUT MONTHLY MAINTENANCE WORK Possible Tue, 18-Apr-2017 09:00 Tue, 18-Apr-2017 16:00 1 0 Approved WITH HV AND LV BREAKER AND CT'S VANDAVASI FEEDER WILL BE RADIALLY CHARGED FROM OTHER END.4.110KV ACK-SP KOIL I&II FEEDER WILL BE RADIALLY CHARGED FROM OTHER END.

110 kv okm to Subject to During LC period there is no SS will be affected since there is inter connected SS fed from 836 Erode 110 KV Udumalpet 110 KV Monthly Maintenance work postponed Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 negamam feeder EE/SLDC/Erode Entire line other end. lc recommended approval

i)The 100MVA Auto Transformer-II is feeding load only to the 110KV GC of 230KV SPR 100MVA, 230/110 KV Auto Transformer-II - SIPCOT Mambakkam SS.ii)The 110KV GC load of 230KV SIPCOT Mambakkam SS will 837 Chennai 230 KV SIPCOT(MAMBAKKAM) HV & LV Breakers and Current Transformer For monthly maintenance works. Possible Tue, 18-Apr-2017 09:00 Tue, 18-Apr-2017 17:00 1 0 Approved 230 KV only the entire 11KV and 33KV side, for monthly maintenance works.

subject to sldc 230 KV Tiruvannamalai # Breaker & CTs & To carry monthly maintenance work by During the LC period both ends Maintenance work programmed and hence no interruption 838 Erode 230 KV SINGARAPET 230 KV possible Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 15:00 1 chennai Approved line isolators AEE/MTC/230 KV SS / SPT of supply concurrence

During the LC period 110 Kv Sanganeri # will be radial from Sanganeri upto SRPudur SS SUB TO WIND 839 Madurai 230 KV SRPUDUR 230 KV a) On 110KV SRP - SNRI # breaker & CT . Annual relay testing work POSSIBLE Tue, 18-Apr-2017 10:00 Tue, 18-Apr-2017 14:00 1 Approved exclusive GEN

230/33KV PowerTransformer-I HV&LV For monthly maintenance & GRT Annual Relay During the LC Period PowerTransformer-I will not beinservice.PowerTransformer-II&III SUB TO WIND 840 Madurai 230 KV SANKANERI 230 KV POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 14:00 1 Approved Breakers,CTs only Testing. willbe Carriedout the EntireLoad. GEN

For PMI Works , Annual relay testing works by P & subject to the load 841 Erode 230 KV ARASUR 230 KV 230 KV Arasur - PUSHEP feeder Br,CTs During the LC Period other 5 Nos of 230 KV Feeders will be in service possible Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 Approved C wing /Thudialur and Monthly maintenance work condition existing

230Kv vellapaneri feeder main breaker (210- During the LC period there will be no supply in 230Kv vellapaneri feeder main breaker 842 Madurai 230 KV kayathar230kv Monthly Maintenance work POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 Sub to wind gen Approved 52), CT and CVT (210-52), CT and CVT only. hence no substation affected.

During the period of shut down the 230KV Sulurpet (inter State ) feeder Tie open at GUMMIDIPOONDI 230 Monthly maintenance work , CT cmamp and bolt Possible OCC 843 Chennai 230 KV 230KV Sulurpet feeder bay 230KV Gummidipoondi SS end and concurance to be obtained from OD/230KV SS Tue, 18-Apr-2017 09:00 Tue, 18-Apr-2017 17:00 1 0 Approved KV nuts replacement work Appd. 129/143 Sulurpet

110 KV Pochampally SS, 110 KV Uthangarai SS availing Total Shutdown Total Relief : 35 1.110 KV Samalpatty feeder breaker,CTs, Carryout Monthly SS Maintenance works by subject to the tsd KARIAMANGALAM 230 MW, the Station load will Managed by keeping Auto Transformer II& III and also 230 KV 844 Erode 110 KV Line switch 2.Auto Transformer - I with HV- I maintenance wing and GRT Relay testing Auto possible Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 14:00 1 relief being Approved KV Shoolagiri and Mettur Feeder, 1 No Grid feeder in service and SSREL Supply fed through Breaker and CTs & LV- I Breaker CTs. Transformer - I realized 230 KV Singarapet SS

1. 110KV KUNDADAM & UTHIYUR SS WILL BE AVAIL TOTAL SHUTDOWN ON 110 KV Ponnapuram - Ingur I # Breaker, CTs subject to the tsd For annual relay test by P&C WING / UDT & Monthly 18.04.2017,2. HENCE IT IS EXPECTED THAT THE LOADS WILL BE WITH IN THE 845 Erode 110 KV PONNAPURAM 230 KV and Line up to S/S of 110KV Selampalayam possible Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 13:00 1 relief being Approved Maintenance works. LIMIT TO KEEP 110KV PNPM-INGUR-I # RADIAL FROM 230KV INGUR SS UP TO SS. realized SELAMPAYAM SS,3. HENCE NO SS WILL BE AFFECTED

1. 110KV KULATHUPALAYAM, MUTHUR & RASATHAVALASU SS WILL BE AVAIL 110 KV Ponnapuram - Ingur II # Breaker, TOTAL SHUTDOWN ON 18.04.2017,2. HENCE IT IS EXPECTED THAT THE LOADS subject to the tsd For annual relay test by P&C WING / UDT & Monthly 846 Erode 110 KV PONNAPURAM 230 KV CTs and Line up to S/S of Kulathupalayam WILL BE WITH IN THE LIMIT TO KEEP 110KV PNPM-INGUR-II # RADIAL FROM possible Tue, 18-Apr-2017 13:00 Tue, 18-Apr-2017 17:00 1 relief being Approved Maintenance works. SS 230KV INGUR SS UP TO KULATHUPALAYAM SS,3. HENCE NO SS WILL BE realized AFFECTED 230KV Karamadai-Karuvalur feeder breaker& subject to the load 847 Erode 230 KV karamadai230KV for monthly maintenance works. LC programmed at other end also. possible Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 14:00 1 Approved CTs condition existing 110KV Kallakudy-I(Thuraiyur) feeder Breaker During the above LC period1) 110KV Thuraiyur Feeder Loads will be transfer to 110KV 848 Madurai 110 KV PERAMBALUR 230 KV For monthly maintenance work POSSIBLE Tue, 18-Apr-2017 10:00 Tue, 18-Apr-2017 15:00 1 0 Approved CT's only Perambalur -II Feeder of Kallakudy Grid SS. 230kv Karamadai feeder breaker CTs LAS For monthly maintenance work and for PMI by subject to the load 849 Erode 230 KV karuvalur230kv 230kv PGCIL feeder will be in service possible Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 Approved and it's line switch palladam lines condition existing During the LC period there will be no interruption of supply to any ss,110KV TJR-TVR 110kv TJR-Thiruvarur feeder Br and its line Sub to load 850 Madurai 110 KV Thanjavur 110 KV For monthly maintenance work Feeder will be radially fed from 230KVss Thiruvarur upto 110kv URBAN SS/TJR,110KV POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 13:00 1 Approved isolator condition URBAN SS TOTAL S/D Programmed on the same day

1. 230 KV Tiruvannamalai - Singarapet #, During the period of L/C time,1. 230 KV T.V.Malai - Singarapet # will be OFF condition,2. THIRUVANNAMALAI 230 Breaker, CT's and Line Isolator2. 110 KV Separate entry is 851 Chennai 230 KV Monthly maintenance work Other 2 Nos 230 KV T.V.malai - Neyveli & Villupuram feeders will be in service.3. 110 KV Possible Tue, 18-Apr-2017 09:00 Tue, 18-Apr-2017 17:00 1 Approved KV Tiruvannamalai - Thandrampet #, Breaker, not there Thandrampet SS availing total S/D. Hence there is no interruption of supply please. CT's and Line Isolator.

GCC/Trichy wing work - 2 Feeder Bay extension for Durind the period of LC All the loads will be transferred to 230 KV BUS A . Bus coupler 852 Chennai 230 KV CUDDALORE 230 KV Ulundurpet and Villupuram Dropper and Jumper under tripped condition .Hence NO Interruption of SupplyConcurrence obtained from Possible Tue, 18-Apr-2017 09:00 Wed, 19-Apr-2017 17:00 2 0 Approved & 230KV TAQA # one by one) work.Take off tower conductor deviation work SE/O/Villupuram

230KV Cuddalore- Neyveli TS-1 feeder 853 Chennai 230 KV CUDDALORE 230 KV For monthly maintenance works Possible Tue, 18-Apr-2017 09:00 Tue, 18-Apr-2017 17:00 1 0 Approved Breaker ,CT, with Line isolator Interruption of SupplyConcurrence obtained from SE/O/Villupuram

For checking jumper tightness at railway crossing Durind the period of LC 230 KV Kadalangudy SS will be fed from 230 KV Thiruvarur Subject to grid 854 Chennai 230 KV CUDDALORE 230 KV 230 KV Neyveli TSII-Kadalangudy Possible Tue, 18-Apr-2017 09:00 Tue, 18-Apr-2017 17:00 1 Not approved location.347 -348 SSHence NO Interruption of SupplyConcurrence obtained from SE/O/Villupuram condition

During the period of LCi. 110 KV Arani - Kanamangalam feeder line LC in between from 110 KV Arani - Kanamangalam feeder in 110 KV Kilpalipet and 110 KV Thorapadi SS. ii. The 110KV Kilpalipet SS & 10KV 855 Chennai 230 KV THIRUVALAM 230 KV between 110 KV Kilpalipet and 110 KV For replacement of defective disc at Loc 36. Possible Tue, 18-Apr-2017 09:00 Tue, 18-Apr-2017 14:00 1 0 Approved Sathumadurai SS are availing total shutdown.Hence there will be no interruption of supply Thorapadi SS. please.

230 KV PUSHEPH - ARASUR # IN TRIPPED CONDITION,230 KV LINE & BUS subject to the load 856 Erode 230 KV PUSHEP 230 KV PUSHEPH - ARASUR # MONTHLY MAINTENANCE WORKS possible Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 Approved ISOLATORS IN OPEN CONDITION condition existing

857 Chennai 110 KV Ulundurpet 230 KV 110KV Ko-Poovanur feeder. Total shutdown maintenance work. 110KV Ko-Poovanur SS Total shudown maintenance work. Possible Tue, 18-Apr-2017 09:00 Tue, 18-Apr-2017 17:00 1 0 Approved

subject to pollachi 110KV ALR-NGM FEEDER CB,CT&LINE 1)PMI Work by JE/Lines/Pollachi and Monthly mtce ss tsd and the 858 Erode 110 KV ALIYAR 230 KV During the LC period pollachi ss under shutdown condition possible Tue, 18-Apr-2017 8:00 Tue, 18-Apr-2017 16:00 1 Approved AND POY-NGM FEDER LINE ENTIRE work2)Muthur LILO tower Erection work load condition existing after that

i. 230 KV Athipattu and Thiruvalam Feeder in service ii. All 110 KV Feeders in Service iii. 859 Chennai 230 KV MOSUR 230 KV For attending Monthly Maintenance work Possible Tue, 18-Apr-2017 09:00 Tue, 18-Apr-2017 14:00 1 0 Approved Hence there will be no interruption please

a) For monthly maintenance work. b) earth wire cut ANUPPANKULAM 230 110 KV APKM- Rajapalayam - II feeder Br., During the LC period the 110 KV Reddiapatti, Rajapalayam, Alangulam SS under total 860 Madurai 110 KV rectification work at Loc. No. 2 to 10 of 110 KV POSSIBLE Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 14:00 1 0 Approved KV CT. and line switch only. shut down. Hence no SS will be affected. Reddiapatti LILO.

Reason for For loop jumper will be provided at Loc. No. 5 of ANUPPANKULAM 230 110 KV Nallamanaicken patti - Rajapalayam During the LC period the 110 KV Rajapalayam SS under total shut down. Hence no SS NOT looping at loc.5 Subject to Deviation 861 Madurai 110 KV Rajapalayam spur line (work will be executed by TLC Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 14:00 1 KV feeder entire. will be affected. POSSBLE not mentioned. Approval wing) Approval copy. 110KV KPH2 to Thudiyalur 2 Feeder Tower No:01 to Subject to to be scheduled 862 Erode 110 KV KUNDAH PH3 110KV KPH2 to Thudiyalur 2 Feeder 12 Pre-Monsoon Inspection work(PMI) and Bus and Line both end open condition Earth switch closed condition. postponed Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 EE/SLDC/Erode on a sunday Maintenance work. approval 110 KV APKM-KYTR # section between Dismantling of existing loc: 296 T - Off arrangement During the LC period 110 KV APKM - KYTR feeder will be radially fed from other end upto ANUPPANKULAM 230 APKM-KOVILPATTI & NSPM -KYTR feeder 863 Madurai 110 KV and stringing permanent connectivity to the Kovilpatti SS. 110 KV NSPM - KYTR feeder will be radially fed from NSPM SS upto POSSIBLE Tue, 18-Apr-2017 8:00 Tue, 18-Apr-2017 17:00 1 0 Approved KV section between Vijayapuri ss to Kayathar Kovilpatti Railway traction SS. Vijayapuri SS, and KYTR end will be Hand Tripped condition. Hence no SS affected. SS.

864 Chennai 230 KV Orgadam 230 kV 230 KV Bus B MONTHLY MAINTENANCE WORK Possible Tue, 18-Apr-2017 09:00 Tue, 18-Apr-2017 17:00 1 0 Approved

230 kv kph 4 to 230kv Karamadai feeder breaker CTs LAS For monthly maintenance work and for PMI by 865 Erode 230 KV KARUVALUR 230 KV 230kv PGCIL feeder will be in service postponed Tue, 18-Apr-2017 9:00 Tue, 18-Apr-2017 17:00 1 thudiyalur lc Approved and it's line switch palladam lines recommended Due to 110 KYR- 110 KV Kayathar - Thalaiyuthu Express # 866 Madurai 110 KV KAYATHAR 230 KV For Monthly Maintenance work During the LC period Other end also avails LC Hence No SS affected POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Gangaikondan- Approved Breaker with CT only Thlaiyuthu # lc

867 Chennai 230 KV SPKoil lines 230 Veerapuram Feeder Quertaly maintenance work Possible Wed, 19-Apr-2017 10:00 Wed, 19-Apr-2017 17:00 1 approved Approved

868 Chennai 230 KV SPKoil 230 KV Kalapakkam feeder 2 Quartely Maintenance Work Pending Wed, 19-Apr-2017 09:00 Wed, 19-Apr-2017 17:00 1 Approved

Sub to 230 CKNI- AMPM#&230CKNI- 230kv veeranam - kodikurichi # HVBR,CT & During the lc period there will be no supply in entire 230kv kodikurichi feeder and Approved Subject to 869 Madurai 230 KV VEERANAM 230 KV Quarterly & Monthly maintenance work POSSIBLE Wed, 19-Apr-2017 10:00 Wed, 19-Apr-2017 17:00 1 NLMPT# in tied Line switch concurrence obtained from SE/NCES/TIN. wind Generation condition.Sub to wind gen

Sub to 230 CKNI- AMPM#&230CKNI- 230KV Veeranam # breaker with HV breaker , 1EE/O /Veeranam has also applied LC on 230kv veeranam breaker on the same 870 Madurai 230 KV KODIKURICHY 230 KV Monthly Maintenance work POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 NLMPT# in tied Approved CT and all Isolators . day(12.04.2017)2Hence No SS Will be affected condition.sub to wind gen

(a) during the above L.C period Unit - 2 Individual spell and Unit - 1 will be standby 110 kv BPH - 1 to DPH Feeder, Line side Monthly maintenance works in Feeder equipment subject to the load 871 Erode 110 KV LOWER METTUR 1 condition.(b) The other end DPH applied L.C on that day on 19.04.2017(c) 110 kv BPH - possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 16:00 1 Approved isolator and Earth switch and its isolator and Earth switch condition existing 1 to BPH - 2 Feeder will be inservice.

872 Chennai 230 KV VEERAPURAM 230 KV 230KV S.P KOIL # Quarterly Maintenance 110 KV S.P.Koil Feeder I & II kept tied condition Possible Wed, 19-Apr-2017 10:00 Wed, 19-Apr-2017 14:00 1 0 Approved

230KV Veeranam - Abishegapatty Feeder During the lc period there will be no supply in entire 230KV Veeranam - Abishegapatty App in 129 873 Madurai 230 KV VEERANAM 230 KV Quarterly & Monthly maintenance work POSSIBLE Wed, 19-Apr-2017 10:00 Wed, 19-Apr-2017 17:00 1 Approved HVBR, CT and line switch feeder and concurrence obtained from SE/NCES/TIN. occ/152 400/110 KV ICT#2 HV Tie Breaker only For CT Tandelta testing and isolator allignment 400/110 KV ICT#2 (200 MVA) will be in service via HV Main Circuit breaker.Hence No Possible OCC 874 Chennai 400 KV Alamathy 400 KV Wed, 19-Apr-2017 10:00 Wed, 19-Apr-2017 17:00 1 0 Approved 1(1)52 work. interuption. Appd. 129/

110KV Kayathar feeder breaker with CT and 1 110kv Keelapavoor SS,Keelaveeranam ss will be Radially fed from 110kv kayathar 875 Madurai 110 KV KODIKURICHY 230 KV For monthly maintenanace work POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 sub to wind gen Approved Line Isolators SS.2 Hence, No SS will be affected.

subject to 110KV KAVUNDAPADI feeder Breaker,CTs kavunthapady ss 876 Erode 110 KV THINGALUR 230 KV Monthly Maintenance Works No SS will be affected possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Approved and Line Isolators being fed from gobi ss

Sunguvarchatram 400 200MVA,400/110KV AUTO TRANSFORMER- During the LC Period Auto Transformer-3 in OFF condition and Auto Transformer -4 will Possible OCC 877 Chennai 400 KV Monthly maintenance work Wed, 19-Apr-2017 09:00 Wed, 19-Apr-2017 17:00 1 0 Approved KV 3 cater the load of Auto Transformer-3 without interruption. Appd. 129/

ANNUAL RELAY TESTING WORK BY GRT WING DURING THE ABOVE LC PERIOD THE FEEDER WILL BE RADIALLY FEED FROM subject to the load 878 Erode 110 KV KUNDAH PH5 110KV PH5 TO SANDINALLAH # possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Approved KUNDAH OTHER END. condition existing

110 KV Pasumalai - Kinnimangalam (Theni) Sub to Pasumalai 879 Madurai 110 KV PASUMALAI 230 KV Maintenance Works of BKR & CT,LI EE / O / Kinnimangalam has also programmed POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 14:00 1 Approved # - 2 BKR & CT,LI only. Auto Load

110 KV SR Pudur - Arumuganeri I feeder Tree clearance work and Tower to Tower inspection. During the LC period, 110KV SRP- ARMI I # will be radial from ARMI upto Panagudy 880 Madurai 110 KV SRPUDUR 230 KV POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 14:00 1 Sub to wind gen. Approved section between SRP to Panagudy. . (Incl).Hence no SS will be affected.

1) During the LC period there will be NO supply in P.Tr-3 and its 33KV feeders. 2) If there 230/33KV Power transformer-3 HV,LV 881 Madurai 230 KV AMUTHAPURAM 230 KV Monthly Maintenance Work is wind generation its 33KV feeders paralleled with other power transformers. 3) No SS POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Sub to wind gen. Approved Breakers with CT's and its 33KV feeder will be affected. 4) Concurrence obtained from SE/NCES/TIN.

230 KV BUS COUPLER BREAKER AND ALL 230 KV FEEDERS AND AUTO TRANSFORMER I,II AND III ARE CONNECTED bus 1 to be in 882 Erode 230 KV GOBI 230 KV FOR MONTHLY MAINTENANCE WORK possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Approved CT'S WITH BUS II WITH BUS I,BUS II IDLY CHARGED THROUGH 230 KV BUS COUPLER BREAKER. service

During the LC period, there will be no supply in 230 KV Pugalur - Paramathy II feeder. App in 230 KV Pugalur - Paramathy II feeder Replacement of existing 230KV C&Rj panel by new 883 Madurai 230 KV PUGALUR 230 KV Necessary Concurrence obtained from PGCIL Paramathy. Hence There is no interruption POSSIBLE Wed, 19-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 2 129occ/148.Sub to Approved Breaker, CT & line switch and line entire only one and Monthly Mtce work. to any SS,Already Lc approved in 129th OCC meeting. load condition

TUTICORIN -AUTO 230 On 230 KV TTN - TTPS -I feeder Breaker 884 Madurai 230 KV For monthly Maintenance work No SS will be affected. POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Sub TTPS gen. Approved KV with CT bus & line side switches.

110KV ALKL-Karaikudy feeder breakler with For monthly maintenance work and tree clearence During the L.C period the feeder will be radial up to narasingampatty SS from KKDI end, Sub to karaiakudi 885 Madurai 110 KV ALAGARKOIL 230 KV CT and Line section between ALKL-NSPTY POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 16:00 1 Approved work. hence there will be no interruption of supply please. Auto Load SS.

For cleaning and tightness checking of bus PTs, During the LC period,1.Both unit in non standby condition.2.Erode,Pallakapalayam,BKB-2 Subject to insulators, AB switches, jumbers,measuring the to be scheduled 886 Erode 110 KV BKB - 1 11O KV BUS feeder breakers are tripped condition at BKB-1 end.3.The PWD drinking water demand of postponed Wed, 19-Apr-2017 8:00 Wed, 19-Apr-2017 17:00 1 EE/SLDC/Erode Capacitance and Dielectric loss angle values on PTs during erode tsd 500c/s will be met out through barrage gate. approval and CTs.

110 KV Alagarkoil -Sempatty -I # section For tower to tower inspection and tree cutting in During the LC period , The 110 KV Sholavanthan SS availing total shut down , Hence 887 Madurai 110 KV ALAGARKOIL 230 KV POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Sub to total s/d Approved beween samayanallur to Amaynaickanur SS. various location. there is no supply interruption at any other ss.

110 KV Salem I &II feeder will be fed from 230 KV SS salem. 110 KV Vembadithalam SS not feasible as HV & LV SIDE - ITS ENTIRE 888 Erode 400 KV Salem 400 KV Monthly Maintenance Work # fed from sangakiri Grid SS, 110 KV Barrage II # will back charged condition from postponed Wed, 19-Apr-2017 8:00 Wed, 19-Apr-2017 14:00 1 auto tr 4 is under Not approved Barrage - II 110 KV Thumbipady and Nangavalli # will be fed from Mettur 230 KV SS outage BREAKERS, JUMPERS & SWITCHES llines lc Subject to 110 KV Barrage II # - Its CT, BREAKER, BUS 889 Erode 110 KV Salem 400 KV Monthly Maintenance Work During LC Period, Ettikuttaimedu SS will be fed from Barrage - II. postponed Wed, 19-Apr-2017 8:00 Wed, 19-Apr-2017 14:00 1 recommended for EE/SLDC/Erode & LINE SWITCHES bph 2 end approval

subject to 110 KV Vembadithalam # - Its CT, 890 Erode 110 KV Salem 400 KV Both end monthly Maintenance Work During LC Period, 110 KV Vembadithalam SS will be avail total shut down . possible Wed, 19-Apr-2017 8:00 Wed, 19-Apr-2017 14:00 1 vembadithalam ss Approved BREAKER, BUS & LINE SWITCHES availing tsd

MONTHLY MAINTENANCE WORKS AND LINE 891 Madurai 230 KV KAVANOOR 230 KV 230 KV KAVANOOR-KARAIKUDI # 2 SINCE BOTH ENDS LC TO BE AVAILED NO SUPPLY IN THE FEEDER POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 0 Approved MAINTENANCE WORKS

110 KV THENI- RASINGAPURAM # 1. Concurrance FOR MONTHLY MAINTENANCE WORK AND LINE BREEKER WITH CT ONLY.110 KV THENI- NO INTERRUPTION TO ANY SS. KAMATCHIPURAM SS RADIAL FROM THENI SS from wind 892 Madurai 110 KV then I 230 KV MAINTENANCE PREMONSOON INSPECTION POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Approved PERIYAR II #(SECTION BETWEEN AND THEVARAM SS WILL BE RADIAL FROM PERIYAR PH. genertor at WORK. KAMATCHIPURAM AND THEVARAM SS) Rasingapuram

During LC period110KV Rasipuram SS availing Total Shut down.110KV Elanagar SS now back fed through 110KV PSI-Rasipuram feeder will be transferred to 230KV Unjanai subject to PUDHANCHANTHAI 230 Auto-II, HV and LV-II CBs, CTs, LASs and 893 Erode 230 KV For regular maintenance works. SS.110KV Namagiripet SS will be transferred to 110KV DVK-Thammampatty feeder.If possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 rasipuram ss Approved KV 230KV Switches. necessary 110KV Erumapatty SS will be transferred to 230KV Perambalur/Samayapuram availing tsd SS.No supply interruption.

Sub to pasumalai 894 Madurai 110 KV kinnimangalam 230 KV 110KV KNMLM PSQ II # Monthly maintenance works for breaker and CT EE/O/PSQ has also programmed.There will be no supply in the entire feeder POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Approved Auto Load

On 1)230KV KKDI - KVNR- 2 # Bkr & Ct's. During the L.C Period all other 230KV #'r will be tied with Grid. Hence there will be No 895 Madurai 230 KV KARAIKUDI 230 KV 1) For Monthly Mtc work2) Tree Cutting work. POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 0 Approved 2)230KV KKDI - KVNR- 2 #'r Entire interruption of Supply.

RENGANATHAPURAM 1)230KV RNPM - CKNI # Br,CT & line Sub to load 896 Madurai 230 KV 1)Monthly Maintenance works2)Tree Cutting works During LC period other end also programmed for availing LC in this feeder. POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 16:00 1 Approved 230 KV switch2)230KV RNPM-CKNI # Entire line condition UNIT IN SERVICE. ALL 400KV KARAMADAI-I&II ,PALAVADI-I&II AND ICT-I&II ARE IN subject to the load 897 Erode 230 KV MTPSII 230KV GOBI FEEDER GENERAL MAINTENANCE WORKS. SERVICE. ALL 230KV MTPS-I ,METTUR AUTO SS AND STANDBY TRANSFORMER possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Approved condition existing EXCEPT THINGALUR FEEDER ARE IN SERVICE.

During the LC period a) other 2 nos. 100MVA Auto Transformer will be in service. b) 100MVA Auto Transformer III, LV III 898 Madurai 230 KV TRICHY 230 KV a) For monthly maintenance works. There will be no interruption of supply to any of the SS and feeders. C) Necessary POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 16:00 1 0 Approved BREAKER, LAS, CTs and ,LV III I/C Isolator. concurrence obtained from SE/O/Trichy.

THE OTHER END WILL ALSO PROPOSE TO AVAIL LINE CLEAR FOR MONTHLY subject to the load 899 Erode 110 KV METTUR DPH 110KV BARRAGE PH 1 FEEDER ENTIRE. MONTHLY MAINTENANCE WORKS possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 15:00 1 Approved MAINTENANCE WORKS ON THAT DAY. condition existing

OTHAKKAL MANDABAM During the LC period, 110KV OKM-Sulur feeder loads will be transferred to 110KV OKM- subject to transfer 900 Erode 110 KV 110 KV OKM-Sulur Feeder (Breaker & CT's) for annual relay testing works by GRT wing. possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 14:00 1 Approved 230 KV Negamam II feeder. Hence, No SS will be affected. of loads

110KV SBT - Algarkovil I # Bkr, CTs and sec. During the LC period, AMNR SS is availing total shutdown and the feeder will be radial 901 Madurai 110 KV SEMBATTY 230 KV 1. Monthly maintenance work2. Tree cutting work POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Sub to toal s/d Approved bet SBT and Solavandan SS from other end upto Solavandan SS.Hence no interruption to any SS.

1)ICT-II in off condition 2)ICT-I in service for 230 KV loads3)230KV Singarapet feeder ICT-II , 230KV Thiruvalam Link-II & 230 KV may be hand tripped if load on ICT-I reached above 280MW4)230KV Thiruvalam Link-II & Possible OCC 902 Chennai 400 KV Thiruvalam 400 KV Tandelta testing for ICT-II & 2 Nos.230KV feeders Wed, 19-Apr-2017 09:00 Wed, 19-Apr-2017 17:00 1 One by One Approved Singarapet feeder 230 KV Singarapet feeder kept in OFF condition after ICT-II put in to service5)400KV Appd.129/ Alamathy -II feeder in service from its main breaker thro 400KV Bus-I

110KV Arani- Thazhanoor Feeder Breaker, Monthly Maintenance work, CT Clamp, and Bolt The 110KV Thazhanoor Feeder is at present idly charged condition up to 110KV Chetpet 903 Chennai 110 KV ARNI 230 KV Possible Wed, 19-Apr-2017 09:00 Wed, 19-Apr-2017 14:00 1 0 Approved 110KV CTs,Line Isolator Nuts replacement work. SS Line side. Hence there will be no interruption of Supply.

During the LC period,the other end has also proposed LC on the same date. M/S. Sterlite- STERILITE SW On 230 KV Sterlite -Annuppankulam feeder 904 Madurai 230 KV For monthly maintenance works. CPP generation (if available) will be exported to 230KV TTPS end and no other SS will be POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 0 Approved STATION 230 KV breaker with CTs and line isolators only. affected please.

subject to the 110KV Coimbatore-Arasur Feeder section 1.110KV Kallimadai SS fed from 230KV Coimbatore SS.2.110KV Irugur SS, KPR EHT feeder being kept 905 Erode 110 KV COIMBATORE 230 KV between 110KV Kallimadai SS and 110KV PMI Works By AE/Lines Coimbatore possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 16:00 1 Approved Service and Sulur Traction EHT Service will be fed from 230KV Arasur SS radial from arasur Irugur SS ss

to be availed one 110KV Thudiyalur I & II Feeder Breaker and by one subject to 906 Erode 110 KV COIMBATORE 230 KV For Monthly Maintenance Works Scheduled Shutdown at 110/22/11KV Kavundampalyam SS possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 16:00 1 Approved CTs only one by one kavundampalaya m ss availing tsd

1)Line inspection and rectification work 2)Main II 907 Madurai 230 KV KADALANGUDI 230 KV 230KV Kadalangudy- PPN II feeder entire distance protection relay fixing work at Kadalangudy No interruption to any SS. All other feeders will be in tied condition. POSSIBLE Wed, 19-Apr-2017 10:00 Wed, 19-Apr-2017 17:00 1 0 Approved end.

Possible OCC 908 Chennai 400 KV Sriperumbudur 400 KV 400KV HV-4 Breaker Quarterly maintenance work Auto-4 will be fed by 400kv tie breaker 0352 Wed, 19-Apr-2017 09:00 Wed, 19-Apr-2017 17:00 1 0 Approved Appd. 129/

Jumbercone tightness checking at cut point tower subject to the load 909 Erode 230 KV METTUR AUTO 230 KV 230 kv MTPS II-Gobi feeder entire Programmed LC at MTPS 2. possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Approved LOC NO: 27. 230 KV MTPS 2-Gobi feeder condition existing

to be availed one 110KV Coimbatore I & II feeders entire one by one subject to 910 Erode 110 KV THUDIALUR 230 KV For monthly mtce works 110KV Kavundampalayam SS will be under total shut down. possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 16:00 1 Approved by one kavundampalaya m ss availing tsd

subject to the 110 KV K.R.Thoppur - Barrage II-feeder (1) Edapady 110 KV SS has Programmed for total shutdown on that day(2) For checking of Jumpercone Tightness at River feeder being kept 911 Erode 110 KV METTUR AUTO 230 KV section between Barrage II & poolampatty Ettikudaimadu 110 KVSS,Jalagandapuram 110 KVSS & Poolampatty 110 kvss loads will possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Approved crossing Towers LOC NO: 1 & 2 radial from kr 110 KV SS only be fed radially from K.R.Thoppur 400 kvss thoppur ss end

Stringing of 230 KV SC line from PGCIL -Arasur between 230 KV Arasur SS and 110 KV 400/230 KV SS to 230 KV Ingur SS for crossing subject to avinasi Avinasi SS) and 110 KV Arasur -Thingalur # location 8 & 9 of 110 KV Vangipalayam SS DC line ss and 912 Erode 110 KV ARASUR 230 KV During the LC Period 110 KV Avinnasi SS & Vanjipalayam SS total Shutdown possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Approved (line section between 230 KV Arasur SS and by TLC/Perundurai wing of GCC/Coimbatore and vanjipalayam ss 110 KV Velampalayam SS) including Feeder monthly maintenance works in Breakers and CTs at availing tsd Breakers and CTs 230 KV Arasur SS

110KV Alundur - Sempatty feeder During the LC period, a) 110KV Alundur - Sempatty feeder radially fed from 230 KV SS a) Monthly maintenance work. b)premonsoon Breaker's,CT'S and Line section between 230 sempatty SS up to vaiyampatty 110 KV SS. b) 110 KV vaiyampatty SS availing total 913 Madurai 110 KV ALUNDUR 230 KV inspection and tree cutting work. c)Relay testing POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 0 Approved KV SS Alundur up to vaiyamppatty 110 KV shutdown. c)All other 110 KV feeder's will be in service. d)There will be no interruption of work. SS. supply to any other feeder's and ss.

110KV Rasipuram Breaker, CTs & Line 110KV Mallur SS will be availing Total shutdown or fed from 230KV Pudansandai SS. subject to mallur 914 Erode 110 KV SALEM AUTO 230 KV Monthly maintenance work. possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Approved Isolators There will be no interruption to any SS or feeder. ss availing tsd

subject to the 915 Erode 110 KV INGUR 230 KV 110KV Capacitor Bank II entire MONTHLY MAINTENANCE WORKS DEPENDING UPON LOAD CONDITION approved Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 14:00 1 voltage profile in Approved the grid subject to 1.110KV Vellichandai feeder breaker, Carryout Monthly SS Maintenance works by 110 KV Vellichandai SS,110 KV Pennagaram SS availing Total Shutdown Total Relief : KARIAMANGALAM 230 vellichandai ss 916 Erode 110 KV CTs,Line switch2.Auto Transformer -II with maintenance wing and GRT Relay testing Auto 25 MW, the Station load will Managed by keeping Auto Transformer I & III and 230 KV possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 14:00 1 Approved KV and pennagaram HV-II Breaker and CTs & LV-II Breaker CTs. Transformer - II Shoolagiri and Mettur Feeder, 1 No Grid feeder in service. ss availing tsd a.For replacement of damaged fixed jaw contacts in 110kv Bus Coupler-1 switch in 110kv Bus Section-2 a.110kv supply to M/s CPCL/TPL-1 will not be availableAfter the LC110kv CPCL feeder and removing hotline jumper in 110kv TPL-1 917 Chennai 110 KV MANALI 230 KV 110kvBusSection-2 and 110kv CPCL will be in service via T-off, Bay.No. 109 of GIS SS.110kvBus Section-1 will be normalized To be discuss Wed, 19-Apr-2017 10:00 Wed, 19-Apr-2017 17:00 1 0 Approved bayb.For making T-off arrangement in 110kv cable from AIS SS point, for linking of feeder to 110 kv GIS bus via GIS Bay.No-109 1,Total shutdown has been approved by CE/D/Vellore vide Memo. VINNAMANGALAM 230 No.:CE/D/VLR/EE/AEE/Gl/ F. Shut down/ D. 142 /2017, Dt:21.03.2017 and 918 Erode 230 KV For Attending Monthly Maintenance works only Possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 14:00 1 0 Approved KV SE/D/Tirupatture vide Memo.No:SE/TEDC/TPR/ Gen / AE / F.Shutdown/D.3287/17, isolators. dt:21.03.2017.

For carrying out premonsoon inspection works by During the LC period,1) all other 110 KV feeders will be in tied condition,2) no supply 919 Madurai 110 KV Punalkulam 110 KV 110 KV Punalkulam - Kurungulam feeder. POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 0 Approved the AEE/Lines/Thanjavur. interruption to any SS.

subject to the 110KV Karamadai-Arasur 1 feeder breaker& feeder being kept 920 Erode 110 KV karamadai230KV for monthly maintenance works. Radially fed from Arasur end. possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 14:00 1 Approved CTs radial from arsur ss end

A)110 KV NEMMELI THIPPIYAKUDI- A) FOR MONTHLY MAINTENANCE WORK BY 1)DURING THE LC PERIOD, 110KV THIRUKKANURPATTY SS, 110KV ECHANKOTTAI THANJAVUR FEEDER BREAKER,CT's & AEE/MTC/NEMMELI THIPPIYAKUDI.B) AND 110KV ORATHANADU SS RADIALLY FED FROM 230KV THANJAVUR SS.2) ALL 921 Madurai 110 KV THIRUVARUR 230 KV LINE ISOLATOR. B)110 KV NEMMELI POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 0 Approved PREMONSOON INSPECTION WORK BY OTHER FEEDERS ARE TIED CONDITION AND NO INTERRUPTION TO ANY SS.3) IN THIPPIYAKUDI-THANJAVUR FEEDER (LP: AE/LINES/PATTUKKOTTAI. 110 /33-11 KV ORATHANADU SS 33 KV ALONE WILL BE IN SHUTDOWN. 230KV NT KUDI SS TO 11

subject to 230 kv hosur to shoolagiri 922 Erode 230 KV METTUR AUTO 230 KV 230KV Hosur Feeder For Monthly Maintenance work During the LC period other 230KV feeders will be in service possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Approved feeder loading limit

subject to the tsd 1.230/110 Auto Transformer - 3 2. 230 KV During the above line clear period there will be no supply to the 110 KV Kempatty SS , being realized and Mettur feeder breaker & Entire line .3. 110 KV 110 KV Uddanapalli SS the above SS also availing shutdown on the same day. The subject to 230 kv 923 Erode 230 KV HOSUR 230 KV For Monthly Maintenance Work. possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 14:00 1 Approved Kempatty feeder breaker & Entire line4. 110 230KV SS loads will be maintained with in two Auto transformer capacity . The hosur to shoolagiri KV Uddanapalli feeder & entire line. concurrence of the SE/KEDC , SE/O/TVLM and CE/D/Vellore , has been obtained . feeder loading limit

During the above line clear period there will be no supply to the 110KV Uddanapally 110KV Uddanapally feeder & 110KV Hosur- For monthly Line maintenance work by Lines wing SS,110KV Kempatty SS.The above SS also availing Shut down on the same day .The 924 Erode 110 KV HOSUR 230 KV Kempatty feeder &230KV Hosur -Mettur 0 Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 14:00 1 repeat of 53664 Not considered Hosur 230KV SS Load will be fed from 230KV Shollogari-Hosur feeder.The concurrence of feeder CE/D/Vellore,SE/O/TVLm,SE/KEDC/Krishnagiri has been obtained.

GENERATI other units will be 925 Erode NG PYKARA UNIT 6 FOR MONTHLY MAINTENANCE WORK NIL possible Wed, 19-Apr-2017 8:00 Wed, 19-Apr-2017 17:00 1 Approved available STATIONS ANUPPANKULAM 230 110 KV APKM - RJPM - I feeder Br., CT., During the LC period the 110 KV Vembakkottai SS loads will be transfer to 110KV 926 Madurai 110 KV Monthly maintenance work POSSIBLE Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 13:00 1 0 repeat of 53835 KV only. NNPTY - ALGM #. Hence no SS will be affected.

110KV Thirukoilur-Deviyakurichi # between 927 Chennai 110 KV VILLUPURAM 230 KV For monthly maintenance wroks For tightening of jumpers in Manalurpet LILO Possible Wed, 19-Apr-2017 09:00 Wed, 19-Apr-2017 17:00 1 0 Approved Thirukoilur to Ariyalur SS

For annual relay testing works by GRT wing,P.M.I subject to OTHAKKAL MANDABAM 110KV OKM-Irugur feeder section between During the LC period,(1) 110KV Podanur SS will be under Total shut down.(2) 110KV 928 Erode 110 KV works by lines wing and monthly maintenance possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 pothanur ss Approved 230 KV 230KV OKM SS and 110KV Irugur SS. Irugur SS will be fed from 230KV CBE SS.Hence, No SS will be affected. works. availing tsd

Zone 1 Bus ( 110 KV Unjanai , Thiruchencode , BKB 3 , Ponni Sugars & Vendipalayam 110 KV SPB , BKB PH - 1 and Bus section Zone - 2 Bus LC for AOH work and TAN Delta subject to the load 929 Erode 110 KV BKB - 2 Feeders ) will be in service. Unit 1 & 2 Non standby necessary concurrence obtained from possible Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 Approved Breakers and Isolators . measurement by P&C wing. condition existing SPB.

BASIN Auto Tr 2 will not be in service, all other 110 KV #S , 230 KV #s , Auto TR 1 & 3 will be in 930 Chennai 230 KV BRIDGE(GMRVASAVI) Auto Transformer 2 Routine mainteance work Possible Wed, 19-Apr-2017 09:00 Wed, 19-Apr-2017 17:00 1 0 Approved service 230 KV

Concurrence from Concurrence from 931 Chennai 230 KV ACHRAPAKKAM 230 KV 16 MVA PR.TR.I FOR MONTHLY MAINTENANCE WORK 1.16 MVA PR.TR.II & III Will be inservice cater the entire 11kv lods 0 Wed, 19-Apr-2017 09:00 Wed, 19-Apr-2017 12:00 1 SE/O SE/O

110KV KPH2 to Thudiyalur 2 Feeder Tower No:16 to Subject to to be scheduled 932 Erode 110 KV KUNDAH PH3 110KV KPH2 to Thudiyalur 2 Feeder 33. Pre-Monsoon Inspection work(PMI) and Bus and Line both end open condition Earth switch closed condition. postponed Wed, 19-Apr-2017 9:00 Wed, 19-Apr-2017 17:00 1 EE/SLDC/Erode on a sunday Maintenance work. approval

933 Chennai 110 KV THARAMANI 230 KV 110 KV Velachery UG # Qtrly. Mtce. work Ideal feeder Possible Wed, 19-Apr-2017 09:00 Wed, 19-Apr-2017 17:00 1 0 Approved

Subject to CBD 934 Chennai 230 KV MYLAPORE 230 KV 100 MVA 230/33 KV Power Tr-1 Monthly Mtce. work 100 MVA 230/33 KV Power Tr.-2 will be in service Possible Wed, 19-Apr-2017 09:00 Wed, 19-Apr-2017 17:00 1 Approved concurrence

230 kv mtps to For monthly maintenance of Breaker,CT and Line Gobi 230KVSS end also programmed to avail LC on 230 Anthiyur-Gobi feeder on the 935 Erode 230 KV ANTHIYUR 230 KV 230KV Anthiyur-Gobi entire feeder. postponed Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 15:00 1 ingur feeder lc Approved switch. same day recommended

FOR ANNUAL RELAY TESTING WORK BY 230 kv mtps to 230 KV ANTHIYUR FEEDER 230 KV ARASUR FEEDER,230 KV PALLAKAPALAYAM FEEDER AND 230 KV MTPS II 936 Erode 230 KV GOBI 230 KV P&C/GOBI AND FOR MONTHLY MAINTENANCE postponed Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 ingur feeder lc Approved BREAKER,CT'S WITH LINE SWITCH FEEDER ARE IN SERVICE,IT MAY CATER THE LOAD WORK recommended

937 Chennai 110 KV SPKoil lines 110 KV Orgadam feeder 2 Quertaly maintenance work Possible Thu, 20-Apr-2017 10:00 Thu, 20-Apr-2017 17:00 1 approved Approved

230/110KV Auto III<, HV III, LV III Bkr, CTs 1. Monthly maintenance work2. Annual relay testing Due to 110Alandur- 938 Madurai 230 KV SEMBATTY 230 KV During the LC period Auto I and II will be in service. POSISBLE Thu, 20-Apr-2017 10:00 Thu, 20-Apr-2017 17:00 1 Approved and relays work Sembatty # lc

i) 100 MVA Auto-II HV, LV breakers with CTs During the L.C, Auto-II will be out of service. Auto-III, Auto-I will cater the SS load; Hence SUB TO WIND 939 Madurai 230 KV KODIKURICHY 230 KV For Monthly maintenance works POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 Approved and all Isolators. no SS will be affected. GENERATION

On 230KV Kayathar - Udayathur feeder a) For monthly maintenance work. . b) Tower to 940 Madurai 230 KV KAYATHAR 230 KV During the LC period, Other end also availing Lc. Hence no SS affected. POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 sub to wind gen Approved breaker with CT & entire line Tower inspection work. 230 KV PUDUKKOTTAI- ALUNDUR FEEDER FOR MONTHLY MAINTENANCE OF BREAKER, PUDUKKOTTAI 230 KV SS LOAD WILL BE MAINTAINED FROM 230 KV KARAIKKUDY 941 Madurai 230 KV PUDUKOTTAI 230 KV BREAKER, CT,CVT, ISOLATOTRS AND 230 CT, CVT, ISOLATORS AND 230 KV EHT LINE AND PG FEEDER AND HENCE THERE WILL BE NO INTERUPTION OF SUPPLY TO ANY POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 0 Approved KV EHT LINE GRT TESTING WORKS SS. OTHER END ALSO AVAILING SHUT DOWN.

ANNUAL RELAY TESTING WQRK BY GRT WING DURING THE ABOVE LC PERIOD THE FEEDER WILL BE RADIALLY FEED FROM subject to the load 942 Erode 110 KV KUNDAH PH5 110KV PH5 TO PH6 # possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 Approved KUNDAH OTHER END. condition existing feeder cannot be Subject to 110 KV ERODE - ELUMATHUR FEEDER DURING LC PERIOD 110 KV KASPAPETTAI SS TO BE FED FROM PUGALUR 230 KV 943 Erode 110 KV Erode 110 KV MONTHLY MAINTENANCE WORK. postponed Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 15:00 1 kept entirely radial EE/SLDC/Erode BREAKER AND CT SS without tsd approval 1).110 KV Pasumalai - Thullukkapatty # 1) Feeder will be kept radial from Thullukapatty upto Soolakarai SS. 2) Hence there is No sub to load 944 Madurai 110 KV PASUMALAI 230 KV Breaker & CT, LI only. 2) Line LC in Section 1) Monthly Maintenance Works of BKR & CT,LI POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 14:00 1 Approved interruption of Supply to any SS condition between Pasumalai - Soolakarai SS. During the LC period the 110 KV SR Puthur - KDR I feeder will be radial from SR Puthur upto Nagercoil (Incl).110 KV SR Puthur - KDR I feeder will be radial from KDR PH II upto Sub to On 110 KV SR Puthur - Kodayar I # line Tree clearance work and Tower to Tower inspection. Subject to Railway 945 Madurai 110 KV SRPUDUR 230 KV Thuckalay SS (incl).The 110/11 KV Chembonvilai, Cheramangalam and Karungal SS will POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 14:00 1 concurrance from section between Nagercoil and Thuckalay. . concurrence avail total Shutdown as approved by SE/KKEDC/NGL and SE/O/TIN. Hence no SS will be Traction Eraniyal affected. on 110KV O Thulukkapatti-Papanasam # For Replacement of defective insulators at Loc:No (i)110KV Ambasamuthiram SS & 110 Kv V.K.Puram SS will be Radillay Fed from sub to ppm pwd 946 Madurai 110 KV KODIKURICHY 230 KV section between 110KV O Thulukkapatti ss & POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 Approved 11 Papanasam Power House . (iii) Hence No SS will be affected. demand Ambasamuthiram-SS 1.110KV UNJANAI - ELANAGAR FEEDER subject to DURING THE ML.C PERIOD ELANAGAR 110KVSS ALSO AVAILING TOTAL 947 Erode 110 KV UNJANAI 230 KV BREAKER , CT'S AND LINESIDE ISOLATOR FOR MONTHLY MAINTENANCE WORK possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 elanagar ss Approved SHUTDOWN ONLY availing tsd

CHECKANURANI SW For Monthly Maintenance work and Line Sub to load 948 Madurai 230 KV 230KV CKNI-Meelavittan Feeder Entire During LC Period there will be no supply in the entire feeder POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 Approved STATION 230 KV Maintenance Work condition

110 KV THENI-PERIYAR # III BREAKER 949 Madurai 110 KV then I 230 KV FOR MONTHLY MAINTENANCE WORK. MONTHLY MAINTENANCE WORK ( R/F PERIYAR) POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 13:00 1 0 Approved WITH CT ONLY.

subject to transfer PUDHANCHANTHAI 230 110KV Namakkal Feeder CB, CTs and Line During LC period110KV Namakkal SS will be back fed through 110KV PSI-Valayapatty of namakkal ss 950 Erode 110 KV For regular maintenance works. possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 15:00 1 Approved KV Switch. feeder.No supply interruption. loads to valayapatty feeder

On 1)110KV SVGA #'r Bkr & its Ct's. During the L.C Period the 110KV Kalayarkoil SS under TSD. 110KV KKDI - SVGA #'r will SUB TO LOAD 951 Madurai 110 KV KARAIKUDI 230 KV 2)110KV KKDI - SVGA #'r S/B KKDI - Kallal 1) For Monthly Mtc work2) For tree cutting work. POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 Approved be radial upto Kallal SS. Hence there will be No interruption of Supply. CONDITION SS. PALLAKAPALAYAM 230 subject to equal 952 Erode 230 KV 230KV BusCoupler CT,Breakers Monthly maintenance work Both Auto Transformer and 230KV Feeders load Transfer to 230KV Bus I possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 Approved KV division of loads UNIT IN SERVICE. 400KV FEEDER KARAMADAI-I ,PALAVADI-I&II AND ICT-I&II ARE IN occ approved and MONTHLY MAINTENANCE WORKS AS 953 Erode 400 KV MTPSII 400KV KARAMADAI-II FEEDER SERVICE. ALL 230KV FEEDER MTPS-I,GOBI,METTUR AUTO AND STANDBY possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 subject to load Approved APPROVED BY OCC TRANSFORMER EXCEPT THINGALUR FEEDER ARE IN SERVICE. condition existing

A) 110 KV KAVANOOR-VALINOKKAM- ARKAY # BR. & C.T. B) 110 KV KAVANOOR- FEEDER TO BE KEPT RADIAL FROM ARKAY UPTO KEELAKARAI & FROM Sub to Araky 954 Madurai 110 KV KAVANOOR 230 KV LINE MAINTENANCE WORKS POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 Approved VALINOKKAM-ARKAY # SEC. BET. KAVANOOR UPTO VALINOKKAM generaton KAVANOOR & VALINOKKAM

230KV UDAYTHOOR-KAYATHAR DURING THE LC PERIOD THERE WILL BE NO SUPPLY TO ENTIRE FEEDER. OTHER 955 Madurai 230 KV UDAYATHUR 230 KV MONTHLY MAINTENANCE WORK POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 14:00 1 sub to wind gen Approved FDR.BREAKER, CT,CVT&LINE SW END ALSO LC APPLIED

GENERATI THE PWD DEMAND WILL BE MEET OUT BY OTHER STANDBY MACHINES ART DAM other machines 956 Erode NG METTUR DPH MACHINE 3 MONTHLY MAINTENANCE WORKS possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 15:00 1 Approved POWER House,METTUR. will be available STATIONS

During the LC period 230KV Main Bus - I will be in service . Hence there will be no 957 Madurai 230 KV THIRUVARUR 230 KV 230KV Main Bus - II 230KV Main Bus - II maintenance work POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 0 Approved interruption of supply to any other Substation.

DURING THE PERIOD OF SHUTDOWN , EXCEPT 110 KV ETPS FEEDER ALL OTHER 958 Chennai 110 KV TONDIARPET 230 KV 110 KV ETPS FEEDER FOR ROUTINE MAINTENANCE WORKS. Possible Thu, 20-Apr-2017 09:00 Thu, 20-Apr-2017 13:00 1 0 Approved FEEDERS AND EQUIPMENTS WILL BE IN SERVICE.

subject to transfer OTHAKKAL MANDABAM for annual relay testing works by GRT wing and During the LC period, 110KV OKM-Irugur feeder loads will be transferred to 230KV CBE 959 Erode 110 KV 110 KV OKM-Irugur Feeder (Breaker & CT's) possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 14:00 1 of loads to Approved 230 KV monthly maintenance works. SS. Hence, No SS will be affected. coimbatore ss During the LC period,(1) 110KV Madukkarai SS,Kinathukadavu SS & Sidco SS will be subject to the OTHAKKAL MANDABAM 230/110 KV Auto Transformer-II (HV & LV under Total Shut down.(2) 110KV OKM-Thudiyalur I feeder loads will be transferred to other auto trs 960 Erode 230 KV for monthly maintenance works. possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 Approved 230 KV Breakers, CTs & LAS) 230 KV TDLR SS.(if necessary)(3) The remaining two Auto Transformers will be in loading limit after service to cater the SS loads.Hence, No SS will be affected. the tsd relief

110KV ICL-I & ICL-II feeder Breaker and CT's During the shutdown period, there will be No interruption to the EHT Consumer . 961 Madurai 230 KV EACHANGADU 230 KV For Monthly Maintenance work POSSIBLE Thu, 20-Apr-2017 10:00 Thu, 20-Apr-2017 17:00 1 0 Approved only One by one. Concurence also obtained from the concerned.

subject to sldc 962 Erode 110 KV DEVIAKURICHI 230 KV For Monthly Maintenance work 110 KV Neyveli # I will be kept Radial from TS-I end possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 chennai Approved concurrence subject to 110KV Erode II feeder Breaker, CTs & Line 963 Erode 110 KV THINGALUR 230 KV Monthly Maintenance. 110KV Gandhi Nagar SS availing total Shutdown. possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 14:00 1 gandhinagar ss Approved Isolator. availing tsd

1)400KV MTPS - I kept in OFF condition at both end & MTPS -II feeder in service during LILO at Palavadi 964 Chennai 400 KV Thiruvalam 400 KV 400KV MTPS feeder I and II Tandelta testing the period of MTPS- I feeder testing.2)400KV MTPS - II kept in OFF condition at both end To be discuss Thu, 20-Apr-2017 09:00 Thu, 20-Apr-2017 17:00 1 Approved on 12.03.2017 & MTPS -I feeder in service during the period of MTPS- II feeder testing.

On 230 KV Sipcot- Chekkanoorani feeder TUTICORIN -SIPCOT During the LC period, the other end has also proposed LC on the same date and no other sub to load 965 Madurai 230 KV breaker with CTs and line isolators only. For monthly maintenance work. POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 Approved 230 KV SS will be affected. condition (Through Bus Transfer Breaker) App in 129 occ/189sub to Approved (One 966 Madurai 400 KV kamuthi 400 KV 400/110 KV ICT- IV MONTHLY MAINTENANCE WORK NO FEEDER AFFECTED IN 110 KV SIDE POSSIBLE Thu, 20-Apr-2017 10:00 Thu, 20-Apr-2017 17:00 1 solar gen. iv and v byOne) one by one App in 129 occ/190sub to Approved (One 967 Madurai 400 KV kamuthi 400 KV 400/110 KV ICT-V MONTHLY MAINTENANCE WORK ICT -III OR ICT -IV WII BE PUT IN TO SERVICE NO 110KV FEEDER AFFECTED POSSIBLE Thu, 20-Apr-2017 10:00 Thu, 20-Apr-2017 17:00 1 solar gen. iv and v byOne) one by one LC programmed 230/110KV Auto Transformer II, HV-II, LV-II NOT 968 Madurai 230 KV KADALANGUDI 230 KV Maintenance work No interruption to any SS. Auto II load will be managed by Auto I. Thu, 20-Apr-2017 10:00 Thu, 20-Apr-2017 16:00 1 along with Total Not approved and 230KV & 110KV LAS POSSIBLE s/d

110 KV PONNAPURAM FEEDER BREAKER 110 KV PONNAPURAM FEEDER BREAKER UPTO subject to the load 969 Erode 110 KV UDUMALPET 230 KV 110 KV PONNAPURAM FEEDER BREAKER UPTO PATSPIN EHT possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 Approved UPTO PATSPIN EHT PATSPIN EHT condition existing

970 Chennai 230 KV Sriperumbudur 400 KV 230KV SV Chatram- Nokia feeder entire line Line patrol and jumper tightness work During the period of shutdown 230kv spr-nokia feeder will be in service Possible Thu, 20-Apr-2017 09:00 Thu, 20-Apr-2017 17:00 1 0 Approved

110KV ACHARAPAKKAM FEEDER 1.110KV ACHARAPAKKAM SS AND TRACTION LOADS WILL BE TRANSFERED TO 971 Chennai 110 KV ACHRAPAKKAM 230 KV BREAKERS AND CT'S WITH LINE SIDE TO CARRYOUT MONTHLY MAINTENANCE WORK Possible Thu, 20-Apr-2017 09:00 Thu, 20-Apr-2017 16:00 1 0 Approved 110KV ACK- SP KOIL -I FEEDER ISOLATOR

Sunguvarchatram 400 972 Chennai 230 KV 230KV SVC - Nokia # entire for monthly maintenance work During the LC period the 230KV SVC - Nokia # will be out of service Possible Thu, 20-Apr-2017 09:00 Thu, 20-Apr-2017 17:00 1 0 Approved KV

973 Chennai 230 KV Nokia 230 KV 230KV Sunguvarchatram # Quartely Maintenance Work During the LC period the 230KV SVC - Nokia # will be out of service Possible Thu, 20-Apr-2017 09:00 Thu, 20-Apr-2017 17:00 1 0 Approved

974 Chennai 230 KV Orgadam 230 kV 230 KV Bus A MONTHLY MAINTENANCE WORK Possible Thu, 20-Apr-2017 09:00 Thu, 20-Apr-2017 17:00 1 0 Approved

subject to the 110 KV Capacitor bank II Breaker, CTs and To carry monthly maintenance work by 975 Erode 110 KV SINGARAPET 230 KV During the LC period the 110KV Capacitor bank II breaker will be in handtrip condition approved Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 15:00 1 voltage profile in Approved Capacitor units AEE/MTC/230 KV SS / SPT the grd

subject to the load 976 Erode 230 KV THUDIALUR 230 KV 230KV PH4 feeder Br & CTs For monthly mtce works 230KV OKM,Coimbatore & Karamadai feeders will be in service possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 14:00 1 Approved condition existing

During the above period of shut down a) 110KV T.V.Koil SS avial toal shutdown on the same day. b) 110KV Thennur SS will be fed radially from 110KV Trichy Grid SS. c) 110KV Poovalur SS, M/s.Kothari EHT SC,110KV Valadi SS will be fed radially from 110KV Samayapuram - Trichy Grid feeder 230KV Samayapuram Auto SS. d). The line Isolator towards 110KV Thennur SS at 977 Madurai 110 KV SAMAYAPURAM 230 KV line portion between 110KV Thiruvanaikoil SS For premansoon EHT line inspection work. POSSIBLE Thu, 20-Apr-2017 10:00 Thu, 20-Apr-2017 17:00 1 0 Approved 110KV Thirvanaikoil ss will be Kept opend and earth switch closed. e)The line Isolator and 110KV Thennur SS. towards 110KV Thirvanaikoil ss at 110KV Thennur SS will be Kept opend and earth switch closed. f) Necessary concurrence has been obtained from M/s.Kothari EHT Service for switching operation. g)There will be no interuption to any other SS/EHT consumers.

subject to the feeder being kept 978 Erode 110 KV ARASUR 230 KV For Monthly maintenance work possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 Approved Breaker and Its CTs. radial from karamadai ss end

a)For monthly preventive maintenance works by the 230KV Alundur - Pudukkottai Feeder breaker, During the LC period, a) Other end also avail shutdown. b) All other 230 KV feeders will 979 Madurai 230 KV ALUNDUR 230 KV AEE/Mtce/Alundur. b)premonsoon inspection and POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 0 Approved CT'S, CVT'S and Line Isolators. be in service. c) There will be no interruption of supply to any other feeders. tree cutting work. c) Relay Testing Work

a)For monthly preventive maintenance works by the 230KV Alundur - Pudukkottai Feeder breaker, During the LC period, a) Other end also avail shutdown. b) All other 230 KV feeders will 980 Madurai 230 KV ALUNDUR 230 KV AEE/Mtce/Alundur. b)premonsoon inspection and POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 0 Approved CT'S, CVT'S and Line Isolators. be in service. c) There will be no interruption of supply to any other feeders. tree cutting work. c) Relay Testing Work

1). 3Nos. Auto transformers will be in Hand trip condition. 2). 230KV Link-I & II will be Subject to 230KV Southern Bus form bus coupler switch to be scheduled 981 Erode 230 KV SALEM AUTO 230 KV To check the alignment of Link-II feeder Bus switch. radially fed from other end. 3). 230KV Sangarapet and MTPS feeders will be in service.4). postponed Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 EE/SLDC/Erode no.489 with tsd There will be no Interruption to any other SS or Feeders. discussion

230KV Anuppankulam feeder breaker (201- During the LC period there will be no supply in 230KV Anuppankulam feeder breaker (201- 982 Madurai 230 KV kayathar230kv Monthly Maintenance work POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 0 Approved 52), CT,CVT and LAS 52), CT,CVT and LAS. Hence no substation affected.

110KV Erode III # Breaker, CTs,Isolators and subject to the load 983 Erode 110 KV INGUR 230 KV MONTHLY MAINTENANCE WORKS DPENDING UPON LOAD CONDITION possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 14:00 1 Approved Line side Isolator condition existing

Possible with Subject to GUMMIDIPOONDI 230 Monthly maintenance work, CT clamp and bolt nuts 984 Chennai 110 KV 110KV SRF feeder Concurance to be obtained from M/s. SRF CBD Thu, 20-Apr-2017 10:00 Thu, 20-Apr-2017 17:00 1 Concurance from Approved KV replacement work concurrence M/s. SRF

1. 110KV PETHAPPAMPATTY # WILL BE KEPT RADIAL FROM 230KV UDT SS UP TO subject to the THIS END2. 110KV THUNGAVY # WILL BE KEPT RADIAL FROM 230KV UDT SS UP 985 Erode 230 KV PONNAPURAM 230 KV AUTO-I ,HV-I,LV-I Breaker and Its CTs Monthly Maintenance works. possible Thu, 20-Apr-2017 10:00 Thu, 20-Apr-2017 17:00 1 other auto trs Approved TO THIS END 3. HENCE, IT IS EXPECTED THAT THE LOADS WILL BE WITH IN THE loading limit LIMITS OF OTHER TWO AUTO TR's 4. HENCE NO SS WILL BE AFFECTED.

a) For monthly Maintenance Workb) for GRT Relay 986 Madurai 110 KV KAYATHAR 230 KV 110 KV Kayathar GC and LV breaker CT During that particular day total shutdown will be availed. Hence, no ss affected POSSIBLE Thu, 20-Apr-2017 0:00 Thu, 20-Apr-2017 0:00 1 0 Approved testing work

occ approved and 400KV MTPS stage III feeder II main & Tie 987 Erode 400 KV karamadai230KV For maintenance works. Other 400KV feeders and ICT 1,2 & 3 will be in service. possible Thu, 20-Apr-2017 10:00 Thu, 20-Apr-2017 17:00 1 subject to load Approved breaker, CTs & CVTs. condition existing 1) Monthly maintenance works by the During the LC period,1) Thanjavur 110 KV Grid SS will avail shutdown in 11 KV AEE/Mtce/Thanjavur,2) Relay replacement works Sub to load 100 MVA Auto Transformers-1 & 2, HV- 1 & feeders,2) further only if required, 110 KV Thanjavur-NTKudi feeder's tie may be kept 988 Madurai 230 KV THANJAVUR 230 KV (i.e. Transformer differential relay from static to POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 condition and NT Approved 2, LV- 1 & 2 Breakers & CTs. (one by one) opened at Thanjavur 230 KV SS for containing auto transformer's load,3) all 230 KV & numerical) in Auto Transformer-2 by the Kudi Auto Loading other 110 KV feeders will be in tied condition,4) no supply interruption to any SS. AEE/P&C/Thanjavur.

1)Thumbal 110KV SS will be availing total shutdown on that day.2)Singapuram 110KV subject to thumbal 110KV Deviakurichi-Singapuram I Entire SS supply availing Deviakurichi-Singapuram II Feeder. 2)110KV Deviakurichi- ss tsd and supply 989 Erode 110 KV SALEM AUTO 230 KV Road & Railway crossing jumpers checking. possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 Approved Feeder Singapuram I Feeder series switch Both 230KV SS will be Kept Opened.3)There will be of singapuram ss no interruption of supply to any SS. loads to feeder 2

subject to regular 990 Erode 230 KV KARUVALUR 230 KV 230kv TBC/BC breaker and CTs For monthly maintenance work All feeders will be in service possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 15:00 1 breakers being in Approved service

1. 230KV Mosur feeder source alone will be in service.2. All 110KV feeders , Auto 991 Chennai 230 KV ATHIPET 230 KV 230KV NCTPS feeder Routine Maintenance work Possible Thu, 20-Apr-2017 11:00 Thu, 20-Apr-2017 17:00 1 0 Approved Transformer & Power Transformer will be in service

subject to the During the LC period 110KV RC plant Feeder will be in service and 110KV Thumbipady feeder being kept 992 Erode 110 KV METTUR AUTO 230 KV 110KV Singarapet I Feeder For Monthly Maintenance work possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 Approved SS total shutdown programed radial from singarapet ss end

GCC/Trichy wing work - 2 Feeder Bay extension for Durind the period of LC All the loads will be transferred to 230 KV BUS B . Bus coupler 993 Chennai 230 KV CUDDALORE 230 KV Ulundurpet and Villupuram Dropper and Jumper under tripped condition .Hence no interruption of supply.Hence NO Interruption of 0 Thu, 20-Apr-2017 09:00 Fri, 21-Apr-2017 17:00 2 Approved & 230KV TAQA # one by one. work.Take off tower conductor deviation work. SupplyConcurrence obtained from SE/O/Villupuram

230KV Cuddalore- TAQA # Breaker ,CT, with 994 Chennai 230 KV CUDDALORE 230 KV For monthly maintenance works 0 Thu, 20-Apr-2017 09:00 Thu, 20-Apr-2017 17:00 1 Approved Line isolator supply.Hence NO Interruption of SupplyConcurrence obtained from SE/O/Villupuram

110 KV Kanchipuram - Kaveripakkam feeder( 995 Chennai 110 KV THIRUVALAM 230 KV in between 110 KV Pallur -110 KV For replacement of defective disc at Loc 93. Possible Thu, 20-Apr-2017 09:00 Thu, 20-Apr-2017 14:00 1 0 Approved Damal SS).ii. The 110KV Damal SS is availing total shutdown.Hence there will be no Kanchipuram and 110 KV Damal SS). interruption of supply please.

ANUPPANKULAM 230 100 MVA AUTO TR. I, HV I, LV I, Br. and CT. During the LC period,the Auto Transformer I already proposed to be availed LC from Sub to load 996 Madurai 230 KV For Monthly Maintenance Works. POSSIBLE Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 Approved KV only 17.04.2017 to 28.04.2017. Hence no SS Will be affected. condition

During the LC period, (1) 110KV Madhampatty SS,Anthiyur SS,Devarayapuram SS and Peedampalli SS will be under Total Shut down.(2) 110KV OKM-Thudiyalur I & II feeder 110 KV Western Bus Section Entire (Auto Tr- loads will be transferred to 230 KV TDLR SS. (3) 110KV OKM-Negamam I & II feeder will this lc has been Subject to OTHAKKAL MANDABAM I, TDLR I & II #'s, Negamam I & II #'s, Sulur # for annual bus maintenance works and defective 997 Erode 110 KV be kept radial from 110KV Negamam SS.(4) 110KV Sulur SS will be fed from 230KV postponed Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 scheduled on EE/SLDC/Erode 230 KV ( Breaker & CT's, Bus dropper & jumper, PT- switch ( Arasur SS.(5) Supply interruption to L&T EHT Service.(4) 230/110KV Auto Transformer-I 13.04.2017 approval I) will be under Cut OFF condition.(5) The remaining two Auto Transformers will be under service to cater the SS loads. Hence, No SS will be affected.

bus lc will be 110 kV LAS 2nos and 2nos 110 kV Isolaters To carry out maintenance at 110 kV LAS 2nos and issued subject to 998 Erode 110 KV LOWER METTUR 2 to Power Transformer at switch yard LMBPH - 2nos 110 kV Isolaters to Power Transformer at (i) Unit - 1 & 2 Generator are shut down condition possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 15:00 1 Approved the load condition 2 / Nerinjipettai switch yard LMBPH - 2 / Nerinjipettai existing only

subject to thumbal 1.Monthly Maintenance 110 KV Deviyakurichi -I Feeder will be fed radially from ss tsd and supply 999 Erode 110 KV SINGAPURAM 230 KV 110 KV Deviyakurichi I Feeder(CT,Breaker) Monthly Maintenance Deviyakurichi end and 110/22KV Thumbal SS is availing TSD on 20.04.2017.2.There will possible Thu, 20-Apr-2017 9:00 Thu, 20-Apr-2017 17:00 1 Approved of singapuram ss be no interruption to the intermediate SS. loads to feeder 2 110KV KPH2 to Thudiyalur Feeder Tower No:34 to Subject to to be scheduled 1000 Erode 110 KV KUNDAH PH3 110KV KPH2 to Thudiyalur Feeder 51 Pre-Monsoon Inspection work(PMI) and Bus and Line both end open condition Earth switch closed condition. postponed Thu, 20-Apr-2017 8:00 Thu, 20-Apr-2017 17:00 1 EE/SLDC/Erode on a sunday Maintenance work. approval 230 kv mtps to 230 KV Pallakapalayam # - Its CTs, Approved Subject to 1001 Erode 230 KV Salem 400 KV Both end Monthly Maintenance Work Both end Monthly Maintenance Work postponed Fri, 21-Apr-2017 8:00 Fri, 21-Apr-2017 14:00 1 anthiyur feeder lc BREAKER, BUS & LINE SWITCHES load condition recommended

230 kv mtps to PALLAKAPALAYAM 230 230KV K.R.Thoppur Feeder CT,Breaker,Bus Monthly Maintenance and Rectify the defect in Bus-II Approved Subject to 1002 Erode 230 KV Both end LC avail on that day postponed Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 anthiyur feeder lc KV &Line Switches and 230KV Bus II Isolators load condition recommended

1) 230KV KR Thoppur - Pallakkapalayamn feeder breakers kept hand tripped at KR Thoppur 400KV SS and Pallakapalayam 230KV SS.2) There will be no supply in 230KV 230 kv mtps to 230KV KR THOPPUR-PALLAKKAPALAYAM Approved Subject to 1003 Erode 230 KV SALEM AUTO 230 KV Railway crossing jumpers checking. KR THOPPUR-PALLAKKAPALAYAM feeder entire,3) KR Thoppur 400KV SS and postponed Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 anthiyur feeder lc feeder entire load condition Pallakapalayam 230KV SS are availing breaker and line switches LC on that day.4) There recommended will be no interruption of supply to any SS.

LC may be programmed with On 1)230KV NT.KUDI #'r Bkr & Ct's 2)230KV During the Lc Period all other 230KV #'r will be tied with grid. Hence there will be No total s/d in NTkudi Approved Subject to 1004 Madurai 230 KV KARAIKUDI 230 KV 1) For Monthly Mtc work.2) Tree Cutting Work. 0 Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 NT.KUDI #'r Entire. interruption of Supply. area. Since load condition Kadalangudi- neyveli # ol

LC may be A)230KV NEMMELI THIPPIYAKUDI- A) MONTHLY PREVENTIVE MAINTENANCE 1) DURING THE LC PERIOD 230/110KV NEMMELI THIPPIYAKUDI SS RADIALLY FED programmed with NEMALITHIPIYAKUDI KARAIKUDI FEEDER BREAKER, CT's AND WORK BY AEE/MTC/ NEMMELI THIPPIYAKUDI.B) FROM 230KV THIRUVARUR SS.2) NO INTERRUPTION TO ANY SS AND ALL OTHER total s/d in NTkudi 1005 Madurai 230 KV POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 Approved 230 KV LINE ISOLATOR. B)230KV NEMMELI PREMONSOON INSPECTION WORK BY FEEDERS ARE TIED CONDITION.3) IF NECESSARY, 110KV N T KUDI-THANJAVUR area. Since THIPPIYAKUDI-KARAIKUDI FEEDER AE/LINES/PATTUKKOTTAI. FEEDER TIE WILL BE OPENED AT 230KV N T KUDI SS. Kadalangudi- neyveli # ol

110 KV Northen Bus ( Kadapperi, Spkoil-I&II, 1006 Chennai 230 KV Orgadam 230 kV MONTHLY MAINTENANCE WORK Possible Fri, 21-Apr-2017 09:00 Fri, 21-Apr-2017 17:00 1 0 Approved Palayaseeevaram) Auto-III HV & LV breakers with CTs and all During the L.C period , i)Auto-III will be out of service. ii)Auto-II, Auto-I will cater the SS SUB TO WIND 1007 Madurai 230 KV KODIKURICHY 230 KV Monthly maintenance work POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 Approved Isolators. load; iii)Hence no SS will be affected. GENERATION

On 230KV Kayathar - Checkannurani-I feeder For a) Monthly Maintenance Work b) Tower to Tower 1008 Madurai 230 KV KAYATHAR 230 KV During the LC period, other end also availing LC. Hence no SS affected. POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 0 Approved breaker with CT & entire line Inspection Work

On 110KV SR Puthur - Nagercoil # section During the LC period,110/11 KV NGL SS will avail total shut down as approved by 1009 Madurai 110 KV SRPUDUR 230 KV Tree clearance and Tower to Tower inspection POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 14:00 1 0 Approved between MPM and Nagercoil. SE/KKEDC/NGL. Hence no SS will be affected.

1) During the LC period there will be NO supply in P.Tr-4 and its 33KV feeders. 2) If there Sub to wind gen 230/33KV Power transformer-4 HV,LV 1010 Madurai 230 KV AMUTHAPURAM 230 KV Monthly Maintenance Work is wind generation its 33KV feeders paralleled with other power transformers. 3) No SS POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 and no blocking of Approved Breakers with CT's and its 33KV feeder will be affected. 4) Concurrence obtained from SE/NCES/TIN. wind gen

subject to 110 KV THINGALUR FEEDER BREAKER SUPPLY TO 110 KV GETTICHEVIYUR SS MAY FED FROM 230 KV THINGALUR getticheviyur ss 1011 Erode 110 KV GOBI 230 KV FOR MONTHLY MAINTENANCE WORK possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 Approved AND CT'S WITH LINE SWITCH FEEDER,NO OTHER SS WILL AFFECTED being fed from thingalur ss end During the L.C period the feeder will be radial from PSQ end further the 10e 110KV sub to load 1012 Madurai 110 KV ALAGARKOIL 230 KV 110KV ALKL-PSQ 1 # breaker with CT ONLY For monthly maintenance work Vandiyur & IT Park SS will be under total shutdown ,hence there will be no intrruption of POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 14:00 1 Approved condition supply please.

subject to 110 KV Thumbipadi # - Its CT, BREAKER, 1013 Erode 110 KV Salem 400 KV Monthly Maintenance Work During LC Period, 110 KV Thumbipady SS will be avail total shut down. possible Fri, 21-Apr-2017 8:00 Fri, 21-Apr-2017 14:00 1 thumbipadi ss Approved BUS & LINE SWITCHES availing tsd

CHECKANURANI SW For Monthly Maintenance work and Line 1014 Madurai 230 KV 230KV CKNI-Kayathar-I feeder Entire During LC Period there will be no supply in the entire feeder POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 0 Approved STATION 230 KV Maintenance Work

110KV Arkay - Keelakarai - Valinokkam - During the LC period evacuation will be done through 110KV Valuthur - Arkay I &II and 1015 Madurai 110 KV VALUTHUR 230 KV Kavanoor section between Arkay and Tree cutting work. POSSIBLE Fri, 21-Apr-2017 10:00 Fri, 21-Apr-2017 17:00 1 sub to Arkay gen Approved Arkay - Mandapam- Perungulam feeders. Keelakarai line. During LC period110KV KN Patty SS availing Total Shut down.110KV Rasipuram SS will 1. subject to kn 110KV Kalappanaickenpatty feeder CB, CTs Subject to PUDHANCHANTHAI 230 be transferred to 110KV Salem-Malllur feeder.110KV Namagiripet SS will be transferred 1. possible 2. patty ss availing 1016 Erode 110 KV & Line Switch.110KV East BUs, its PTs and For regular maintenance works. Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 EE/SLDC/Erode KV to 110KV DVK-Thammampatty feeder.Other 110KV feeders will be catered by Auto-I in postponed tsd; 2. to be Bus Side Switches-5 Nos. approval service.No supply interruption. availed with tsd

RENGANATHAPURAM During LC period the feeder will be radially fed from SBT end upto RNPM SSIntermediate 1017 Madurai 110 KV 110KV RNPM - SBT-I # Br,CT's Monthly Maintenance works POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 14:00 1 0 Approved 230 KV SS 110KV Minukkampatty SS avail total shutdown.

230KV UDAYATHOOR-SANKANERI DURING THE LCPERIOD THEREWILLBE NO SUPPLY TO ENTIRE FEDER. OTHER 1018 Madurai 230 KV UDAYATHUR 230 KV MONTHLY MAINTENANCE WORK POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 14:00 1 Sub to wind gen Approved FDR,BR., CT., CVT., L.SW END ALSO LC APPLIED

During the LC period a) Trichy 110 KV Grid SS availing total shut down for monthly maintenance works. b) 110 KV Iyyarmalai SS and 110 KV Pettavaithalai SS loads will be 110 KV Trichy Link I & II feeder breaker , CTs a) For monthly maintenance works. b) Pre monsoon 1019 Madurai 110 KV TRICHY 230 KV managed through 110KV Pugalur - Puliyur - Trichy feeder and M/s Welspun Solar power. POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 16:00 1 sub to wind gen Approved & Line Isolator and line entire one by one. inspection c) All other 110 KV feeders will be in service. d) there will be no interruption of supply to any of the SS.

subject to the OTHAKKAL MANDABAM 110 KV OKM-Irugur # section between During the LC period, 110KV Podanur SS will be fed from 230KV OKM SS and 110KV 1020 Erode 110 KV for P.M.I works by lines/TDLR wing. possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 14:00 1 loads being fed Approved 230 KV 110KV Podanur SS and 110KV Irugur SS. Irugur SS will be fed from 230KV CBE SS. Hence, No SS will be affected. from either end

subject to the OTHAKKAL MANDABAM 110KV OKM-Udumalpet II Feeder (Breaker, During the LC period, 110KV OKM-Udumalpet II feeder will be kept radial from 110KV feeder being kept 1021 Erode 110 KV for monthly maintenance works. possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 14:00 1 Approved 230 KV CT's & Line Switch) Udumalpet SS. Hence, No SS will be affected. radial from udpt ss end DURING THE ABOVE SHUTDOWN PERIOD THERE WILL BE NO IMPORT RECEIVED 110 kv MCL-II Feeder entire, BREAKERS , 1022 Madurai 110 KV EACHANGADU 230 KV For Monthly maintenance works. FROM EHT CONSUMER & Concurrence also obtained from the consumer for the POSSIBLE Fri, 21-Apr-2017 10:00 Fri, 21-Apr-2017 17:00 1 0 Approved CT'S interruption.

230KV SBT - MYVADI # Bkr, CTs and line 1023 Madurai 230 KV SEMBATTY 230 KV 1. Monthly maintenance work2. Tree cutting work During the LC period the other end is also availing LC. POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 0 Approved entire

During the above Lc period 230KV MTPH-AUTO SS Feeder will be in Service and Subject to 230KV MTPH-MTPS FEEDER other feeders 1024 Erode 230 KV METTUR TPH For monthly maintenance works machine 1,2,3 & 4 in common spell AOH work and machine 4 in individual spell AOH postponed Fri, 21-Apr-2017 7:00 Fri, 21-Apr-2017 17:00 1 EE/SLDC/Erode BREAKER,CTS AND ISOLATORS would overload work and PWD demand meet out by Dam power house units. approval

230 KV MYVADI - SEMPATTY FEEDER subject to the load 1025 Erode 230 KV Udumalpet 400 KV MONTHLY MAINTENANCE WORK BOTH END AVAIL LC possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 Approved BREAKER, CT AND LINE ENTIRE condition existing subject to the feeder being kept 110 KV Deviakurichy-Singipuram feeder- II 110KV Deviakurichy - Singipuram feeder- II will be kept radial from Singipuram 230KV 1026 Erode 110 KV DEVIAKURICHI 230 KV For Monthly Maintenance work possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 radial from Approved Breaker, CTs and Line side isolator SS end. singapuram ss end subject to getticheviyur ss 110Kv Gobi Feeder Breaker, CTs and Line 1027 Erode 110 KV THINGALUR 230 KV Monthly Maintenance. 110KV Getticheviyur SS will be availing total Shutdown. possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 14:00 1 availing tsd as lc Approved Isolator. recommended for the other end

1)400KV Alamathy - I feeder kept in OFF condition at both end & Alamathy -II feeder in service during the period of Alamathy- I feeder testing.2)400KV Alamathy - II feeder kept Possible OCC 1028 Chennai 400 KV Thiruvalam 400 KV 400KV Alamathy feeder - I & II Tandelta Testing Fri, 21-Apr-2017 09:00 Fri, 21-Apr-2017 17:00 1 0 Approved in OFF condition at both end & Alamathy -I feeder in service during the period of Appd. 129/158 Alamathy- II feeder testing. TUTICORIN -SIPCOT On 110KV Sipcot-TTN-I feeder breaker with  During the L.C period, 110 KV Sipcot SS will be under shut down &110 KV Vagaikulam 1029 Madurai 110 KV For monthly maintenance works. POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 0 Approved 230 KV CTs only. SS will be radially fed from 230KV Auto SS/TTN end and no other SS will be affected.

ACHRAPAKKAM 230 KV 230KV ACHARAPAKKAM -KALPAKKAM TO CARRYOUT MONTHLY MAINTENANCE 1.230KV VILLUPURAM FEEDER WILL BE IN SERVICE CONDITION2.HENCE NO 1030 Chennai 230 KV Possible Fri, 21-Apr-2017 09:00 Fri, 21-Apr-2017 16:00 1 0 Approved & SPKoil lines FEEDER ENTIRE WORK,Insulator Replacement work INTERUPTION POWER SUPPLY.

subject to 110 KV K.R.Thoppur -Thumbipady feeder For checking of Jumbercone Tightness at Railway Thumbipady 110 KVSS Programmed for shutdown on that day.and K.R.Thoppur SS has 1031 Erode 110 KV METTUR AUTO 230 KV possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 thumbipadi ss Approved entire. crossing Tower LOC NO:41 & 42 and 66 & 67 Programmed for Mtce work in this feeder on that day availing tsd

to be scheduled 230KV BUS, Feeders, Breakers, CT's, PT's, Four Machines at Tunnel Power House is common spell AOH LC and PWD demand meet Subject to after 230 kv mtps 1032 Erode 230 KV METTUR TPH LAS, Earth pits Maintenance (TOTAL BUS Annual Maintenance and Testing. out by Dam Power House units.(Total BUS LC required for seven working days from postponed Fri, 21-Apr-2017 7:00 Fri, 21-Apr-2017 17:00 1 EE/SLDC/Erode 3 to thingalur is LC) 21.04.2017 to 28.04.2017 on Daily basis) approval back in service subject to the feeder being kept 1033 Erode 230 KV THUDIALUR 230 KV 110KV Arasur feeder Br & CTs For monthly mtce works & Annual relay testing The feeder will be radial from other end possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 15:00 1 Approved radial from arasur ss end

230KV Sankaneri-Udayathoor feeder For monthly maintenance & GRT Annual Relay During the LC Period There willbe no supply inthe Entire feeder, Other end also LC 1034 Madurai 230 KV SANKANERI 230 KV POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 14:00 1 Sub to wind gen Approved Breaker,CTs&Lineswitches. Testing. applied.

230 KV Arasur - Karamadai feeder Br,CTs subject to the load 1035 Erode 230 KV ARASUR 230 KV For Monthly maintenance workBoth ends) During the LC Period other 5 Nos of 230 KV Feeders will be in service. possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 15:00 1 Approved and line side Isolator condition existing

110KV puthansanthai-Kalappanaikenpatty subject to kn patty 1036 Erode 110 KV UNJANAI 230 KV Jumper tightness checking During the LC period the KN Patty SS total shutdown possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 Approved feeder line entire ss availing tsd

subject to the 100MVA Auto Transformer-II, HVII, LVII 2Nos. 100MVA Auto Transformer-I & III will be in service and adequate to share the 1037 Erode 230 KV SALEM AUTO 230 KV Monthly Maintenance work possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 other auto trs Approved Breakers & their CTs loads. There will be no interruption to any SS or feeder. loading limit

400 KV HV Breaker for ICT2(410-52) 400KV During the LC period there will be no supply in 400 KV Main Breaker for ICT2(410-52) Tie Breaker for ICT2 & ICT3 (411-52),230KV App in 129 occ 1038 Madurai 400 KV kayathar230kv Monthly maintenance work 400KV Tie Breaker for ICT2 & ICT3 (411-52),230KV LV Breaker for ICT 2 (206-52) & POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 Approved LV Breaker for ICT 2 (206-52) & 400/230KV /194 400/230KV ICT2. hence no substation affected. ICT2 railway traction 1039 Erode 110 KV INGUR 230 KV MONTHLY MAINTENANCE WORKS DEPENDING UPON LOAD CONDITION possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 14:00 1 feeder 2 to be in Approved ,Isolators and Line side Isolator service

A) Electrical- Monthly maintenance of 1) Exciters GENERATI cleaning 2) 55MVA Generator power Transformer 3) After s/d of Kod 1040 Madurai NG KODAIYAR PH2 Generator unit-II PH-II Machine will be shut down condition. POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 Approved SF6 110KV unit breakerB) mechanical- Monthly Ph2 STATIONS maintenance of TGB oil re circulation

subject to the tsd Carryout Monthly SS Maintenance works by relief being 1.110 KV Bargur feeder breaker, CTs & Line maintenance wing and Lines wing Programmed Tree realized and 110 KV Bargur and 110/33 KV Penneswaramadam and 110 KV Adhiyamankottai are switch 2.Auto Transformer -III with HV- III cutting work in 230 KV Karimangalam SS - 110 KV subject to the 230 KARIAMANGALAM 230 availing total shut down. Expected load relief : 60 MW. The station loads will be managed 1041 Erode 110 KV Breaker and CTs & LV- III Breaker CTs. Bargur SS at Loc No : 86-87 and Loc No: 32-33 and possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 14:00 1 kv mettur to Approved KV by keeping Auto Transformer - I & II and 230 KV Mettur feeder in service and also 1 No 3.Shoolagiri 230KV feeder breaker and CT`s Neelgiri tree to be remove in Link Line Between 110 karimangalam Grid feeder in service. and Line switch Adhiyamankottai SS to Pennagaram SS at Loc No: feeder loading 69-70 limit; occ approved

110 KV Thevur #,110 KV BKB-I# ,110 KV Bus Coupler, LV-I,LV-II,HV-I,HV-II, 230 KV 1042 Erode 110 KV Pallakapalayam230kv Tan Delta Value Measurement in CTs. One after another. 0 Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 repeat of 53835 Not considered Gobi #,230 KV K.R.Thoppur # & 230 KV Bus Coupler.

1.110 KV UNJAANI - SANKARI FEEDER other ends have BREAKER,CT AND LINE ISOLATOR Subject to 110 KV SANKARI FEEDER AVAILING LC ON THAT DAYBOTH ENDS AVAILING LC ON not appiled for lc 1043 Erode 110 KV UNJANAI 230 KV ONLY2.230 KV UNJANAI - KR THOPPUR MONTHLY MAINTENANCE WORK postponed Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 EE/SLDC/Erode THAT DAY FOR 230 KV KR THOPPUR FEEDER and to be FEEDER BREAKER,CT AND LINE approval scheduled with tsd ISOLATOR ONLY 1. 230KV S.D.PALAYAM # will cut off,2. 230KV O.K.M # will cut off,3. 110KV PETHAPPAMPATTY # WILL BE KEPT RADIAL FROM 230KV UDT SS UP TO THIS For tightness checking of all clamps and Alignment subject to the load 1044 Erode 230 KV PONNAPURAM 230 KV 230 KV Northern Bus Entire END4. 110KV THUNGAVY # WILL BE KEPT RADIAL FROM 230KV UDT SS UP TO possible Fri, 21-Apr-2017 10:00 Fri, 21-Apr-2017 17:00 1 Approved of M-I Isolater Switches. condition existing THIS END 5. Auto Tr II Will be cut off, as the Loads will be with in the limit of other Two Auto Trs.6. Hence no SS will be affected.

230KV Karamadai-Arasur feeder breaker, subject to the load 1045 Erode 230 KV karamadai230KV For maintenance works and P&C testing works. LC programmed at other end also. possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 14:00 1 Approved CTs & CVTs. condition existing

subject to 1)110KV Deviakurichi - singapuram II Feeder breaker & CT's maintenance work availing mallikarai ss Deviakurichi SS. 2)Malleikarai 110KV SS will be availing total shutdown on that availing tsd and 110KV Deviakurichi-Singapuram II Feeder day.3)110KV Deviakurichi-Singapuram II Feeder series switch at attur 110KV SS towards subject to the 1046 Erode 110 KV SALEM AUTO 230 KV (Section between Deviakurichi 230KV SS - Road & Railway crossing jumpers checking. possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 Approved Deiakurichi Side SS will be Kept Opened.4)110KV Deviakurichi-Singapuram II feeder will feeder being kept Attur 110KV SS) be radially upto attur 110KV SS from singapuram 230KV SS.3)There will be no radial from interruption of supply to any SS. singapuram ss end after that A)AUTO TRANSFORMER-I, HV-I, LV-I BREAKERS AND CT's.B) 110KV NEMMELI THIPPIYAKUDI-PUDUKKOTTAI FEEDER BREAKER, CT's AND LINE A) FOR MONTHLY MAINTENANCE WORK BY 1) DURING THE LC PERIOD, 110/11KV URANIPURAM SS, 110KV KARAMBAKUDI SS ISOLATOR.(NOW RADIAL FROM 230KV AEE/MTC/N T KUDI.B) FOR MONTHLY WILL AVAIL SHUTDOWN2) AUTO TRANSFORMER-II IN SERVICE. 3) IF NECESSARY Sub to load 1047 Madurai 230 KV THIRUVARUR 230 KV NEMMELI THIPPIYAKUDI SS TO 110KV MAINTENANCE WORK BY AEE/MTC/N T KUDI.C) 110KV N T KUDI-THANJAVUR FEEDER TIE WILL BE OPENED AT 230KV NT KUDI POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 Approved condition KARAMBAKUDI SS) ONE AFTER FOR PREMONSOON INSPECTION WORK BY SS.4) NO INTERRUPTION TO ANY SS AND ALL OTHER FEEDERS ARE TIED ANOTHER. C) 110KV N.T.KUDI - AE/LINES /PATTUKKOTTAI CONDITION. KAMBAKUDI FEEDER (LINE PORTION BETWEEN 230KV N.T KUDI SS TO 110 KV URANIPURAM SS) subject to the tsd 230/110kv Autotransformer I HV/LV breaker 110kv Annur SS and 110kv sellampampalyam SS total shutdown and 110kv Arasur II 1048 Erode 230 KV KARUVALUR 230 KV For monthly maintenance work possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 relief being Approved CTs and LAS feeder fed from 230kv Arasur SS realized

110kv Annur feeder breaker CTs and line For monthly maintenance work and PMI by palladam subject to annur 1049 Erode 110 KV KARUVALUR 230 KV 110kv Annur SS total shutdown possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 Approved switch lines ss availing tsd

1.110KV UNJANAI - PARYTHIPALLY subject to DURING THE L.C PERIOD, PARUTHIPALLY 110KVSS ALSO AVAILING TOTAL 1050 Erode 110 KV UNJANAI 230 KV FEEDER BREAKER, T'S ANDLINESIDE FOR MONTHLY MAINTENANCE WORK possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 paruthipalli ss Approved SHUTDOWN ISOLATOR ONLY availing tsd

subject to main 230KV Auxiliary Bus with 230KV Bus coupler 1051 Erode 230 KV METTUR AUTO 230 KV For Annual Maintenance work During the LC period 230KV Main Bus will be in service possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 bus being in Approved Breaker service

For replacement of flash over insulators at Loc No.42,44,72 and maintenance of 110 KV Nainar Durind the period of LCThe 110 KV Chinnasalem SS will be availing Total Subject to load 1052 Chennai 110 KV CUDDALORE 230 KV palayam ABS and checking of jumper tightness in Possible Fri, 21-Apr-2017 09:00 Fri, 21-Apr-2017 17:00 1 Approved shutdown.Hence NO Interruption of SupplyConcurrence obtained from SE/O/Villupuram condition Railway crossing in Chinna salem spur line Loc 30- 31

FOR ATTENDING MONTHLY MAINTENANCE 1053 Chennai 230 KV MOSUR 230 KV 230 KV TIE BREAKER IDLY CHARGED CONDITION Possible Fri, 21-Apr-2017 09:00 Fri, 21-Apr-2017 14:00 1 0 Approved WORK

110 kv okm to 110kv COIMBATORE-ARASUR FEEDER 1. 110KV KALLIMADAI SS WILL BE FED FROM 230KV COIMBATORE SS.2. 110KV Subject to irugur feeder 1054 Erode 110 KV COIMBATORE 230 KV SECTION BETWEEN 110KV KALLIMADAI PMI WORKS BY AE / LINES / COIMBATORE IRUGUR SS, KPR EHT SERVICE AND SULUR RAILWAY TRACTION EHT SERVICE postponed Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 16:00 1 EE/SLDC/Erode section lc SS AND 110KV IRUGUR SS WILL BE FED FROM 230KV ARASUR SS. approval recommended

ANUPPANKULAM 230 110 KV APKM - PPTY # Br., CT., and line During the LC period the 110 KV Paraipatty SS loads will be transferred to 110KV APKM - 1055 Madurai 110 KV For Monthly Maintenance Works. POSSIBLE Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 13:00 1 0 Approved KV switch only. T.Kallupatti feeder. Hence no SS will be affected.

LC to be availed one by one 1.Thevur 110 kc ss proposed TSD,2.Radilally fed from other 1.110kv Thevur#,2.110kv BKB-I#,3.110 kv end 3.Auto Transformer-I will be mange 110 kv BKB-I # and sankari-I# Load and Auto will be issued one Bus Coupler,4.Auto Transformer-I HV &LV PALLAKAPALAYAM 230 Transformer-II will be mange the 110 kv Sankari-II#,Barrage3 IV # and thevur # load by one subject to 1056 Erode 110 KV side,5.AutoTransformer-II HV &LV Tan Delta Value measurement in CTs possible Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 Approved KV 4.Auto II Transformer will be manage the load 5.Auto I Transformer will be manage the the load condition side6.6.230 kv Gobi #7.K.R.Thoppur #8.230 load 6.Radially fed from other end 7.Radially fed from other end 8.Both Auto existing only kv Bus coupler CTs,Breaker. Transformers load Transfer to 230 kv Bus I

LC to be availed one by one 1.Thevur 110 kc ss proposed TSD,2.Radilally fed from other 1.110kv Thevur#,2.110kv BKB-I#,3.110 kv end 3.Auto Transformer-I will be mange 110 kv BKB-I # and sankari-I# Load and Auto Bus Coupler,4.Auto Transformer-I HV &LV PALLAKAPALAYAM 230 Transformer-II will be mange the 110 kv Sankari-II#,Barrage3 IV # and thevur # load 1057 Erode 110 KV side,5.AutoTransformer-II HV &LV Tan Delta Value measurement in CTs 0 Fri, 21-Apr-2017 9:00 Fri, 21-Apr-2017 17:00 1 repeat of 53835 Not considered KV 4.Auto II Transformer will be manage the load 5.Auto I Transformer will be manage the side6.6.230 kv Gobi #7.K.R.Thoppur #8.230 load 6.Radially fed from other end 7.Radially fed from other end 8.Both Auto kv Bus coupler CTs,Breaker. Transformers load Transfer to 230 kv Bus I

230 kv unjanai to 230 KV Unjanai# - Its CTs, BREAKER, BUS puthansanthai 1058 Erode 230 KV Salem 400 KV Both end Monthly Maintenance Work Both end Monthly Maintenance Work postponed Fri, 21-Apr-2017 8:00 Fri, 21-Apr-2017 14:00 1 Approved & LINE SWITCHES feeder lc recommended

possible with CBD 1059 Chennai 230 KV Kadapperi Auto Transformer 3 Monthly Maintenance Work Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 17:00 1 Approved concurrence

sub to nadikavau During the LC period the 110 KV SRP-KDR II # radial from SRP upto Thuckalay.110/11 total s/d.App in KV Marthandam, Kuzhithurai and Munchirai SS will avail total shut down as approved by 110 KV SR Pudur - Kodayar II feeder section Tree clearance work and Tower to Tower inspection. 129 occ/163 on 1060 Madurai 110 KV SRPUDUR 230 KV SE/O/TIN and SE/KKEDC/Ngl. Parasalai SS will avail Back feeding from KSEB. POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 14:00 1 Approved between Thuckalay and Kodayar PH II. . 22.4.17. SRLDC Necessary concurrence may be obtained from SRLDC/ Bangaluru. Hence no SS will be addressed for affected. revised date

1061 Chennai 230 KV SPKoil lines Auto Transformer 2 Monthly Maintenance Work Possible Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 17:00 1 approved Approved

1062 Chennai 230 KV SPKoil lines 230 KV Kalpakkam-Echur feeder Insulator Replacement work Possible Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 17:00 1 approved Approved

to be scheduled 230 KV Vinnamangalam # Breaker, CTs & To carry monthly maintenance work by During the LC period both ends Maintenance work programmed and hence no interruption with tsd in 1063 Erode 230 KV SINGARAPET 230 KV postponed Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 15:00 1 Approved line isolators AEE/MTC/230 KV SS / SPT of supply vinnamangalam ss fed areas

1064 Chennai 230 KV Nokia 230 KV Auto Transformer MONTHLY MAINTENANCE WORK Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 17:00 1 0 Approved

tan delta measurements lc DURING THE LC PERIOD 230/110KV AUTO TRANSFORMER II WILL BE IN SERVICE. 1065 Erode 230 KV ANTHIYUR 230 KV 100 MVA, AUTO TRANSFORMER I MONTHLY MAINTENANCE WORKS postponed Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 15:00 1 recommended for Approved HENCE NO SS WILL BE AFFECTED. pallakkapalayam ss

110 KV KAVANOOR-VALINOKKAM-ARKAY FEEDER TO BE KEPT RADIAL FROM ARKAY UPTO KEELAKARAI & FROM Due to Arkay and 1066 Madurai 110 KV KAVANOOR 230 KV LINE MAINTENANCE WORKS POSISBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 Approved # SEC. BET. VALINOKKAM & KEELAKARAI KAVANOOR UPTO VALINOKKAM Keelakari LC 110KV Papanasam-Servalar#1 Breaker with Present PWd Demand is 200C/S.During the LC period, the servalar machine is in under After s/d of SVLR 1067 Madurai 110 KV ABAN For carry out Monthly Maintenance work POSSIBLE Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 12:00 1 Approved CT stand by condition. Hence no ss will be affected please. m/c

110KV BUS Section -II(Including, bus coupler- Subject to load 1068 Chennai 110 KV VEERAPURAM 230 KV Quarterly Maintenance - Annual Relay Test No supply to M/S.Infosys (Concurrence obtained from M/S Infosys) Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 16:00 1 Approved II,110 KV S.P.Koil #-II&110 KV M/S Infosys) condition

During the LC period 110KV PPM-SVLR feeders 1& 2 earth switches are to be closed at After s/d of SVLR 1069 Madurai 110 KV SERVALAR Servalar PH 110KV switch yard entire. For carrying out monthly maintenance work. both end.The present PWD demand is 200 CUSECS. The work will be carried out during POSSIBLE Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 16:00 1 Approved m/c Servalar machine is under stand by condition.Hence there will be no loss of generation.

1110kv Tenkasi SS, Kadayam,Shenkottai SS will be under monthly shudown 2110KV 110KV Tenkasi - Papanasam feeder breaker Keelapavoor wind farm SS will be fed from 110KVPapanasam-Kayathar# 3Papanasam 1070 Madurai 110 KV KODIKURICHY 230 KV For Monthly Maintenance work POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 0 Approved with CT and Line Isolators PH will be tied with 110 KV Kayathar - Papanasam # by closing of Bus coupler switch at rastha SS End.

On 230KV Kayathar - Checkannurani-II a) For monthly maintenance work. b) Tower to 1071 Madurai 230 KV KAYATHAR 230 KV During the LC period, there will be no supply in the entire feeder. Hence no SS affected. POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 0 Approved feeder breaker with CT & entire line Tower inspection work.

subject to the Auto Transformer II,HV 2 & LV 2's Breakers 1072 Erode 230 KV THINGALUR 230 KV Monthly Maintenance Works 110KV Erode SS availing Total Shutdown. possible Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 other auto tr Approved with CTs loading limit

110KV AVADI-I & 110KV AVADI-II FEEDER DURING THE ABOVE SHUTDOWN PERIOD 110KV AVADI-I & 110KV AVADI-II 1073 Chennai 110 KV Alamathy 400 KV ANNUAL RELAY TESTING BY GRT WING. Possible Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 17:00 1 Already applied Already approved (ONE BY ONE) FEEDER (ONE BY ONE) WILL NOT BE IN SERVICE.

110 KV Pasumalai - Anupankulam # BKR & 1) Feeder will be kept radial from Anupankulam feeding Virudhunagar. Aviyur and 1074 Madurai 230 KV PASUMALAI 230 KV Maintenance Works of BKr & CT,LI 0 Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 14:00 1 Wrong entry Wrong entry CT only. Railway Traction loads 2) Hence No interruption of Supply to any SS

110 KV ANTHIYUR FEEDER BREAKER CT DURING THE LC PERIOD 110/22KV ANTHIYUR SS WILL AVAIL TOTAL SHUT DOWN. subject to anthiyur 1075 Erode 110 KV ANTHIYUR 230 KV MONTHLY MAINTENANCE WORKS possible Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 15:00 1 Approved & LINE SWITCH. NO SS WILL BE AFFECTED. ss availing tsd

On 110KV Papanasam-Servalar I feeder For tree cleareance work and jumper bolt During the LC period, Servalar powerhouse generation will be shutdown condition. 2) After s/d of SVLR 1076 Madurai 110 KV KODIKURICHY 230 KV POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 Approved entire line. rectification work at loc no: 13 R phase EE/O Papanasam also applied for monthly Maintenance work. m/c

230KV Pugalur - Renganathapuram feeder Subject to During the LC period there will be no supply in 230 KV Pugalur - Renganathapuram Due to CKNI ICT 1077 Madurai 230 KV PUGALUR 230 KV Breaker, CTs & line switch and entire line Monthly maintenance work. POSISBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 EE/SLDC/ Madurai feeder since other end also availing L.C on the same period Loading only approval

1. 230KV UNJANAI - P.CHANTHAI FEEDER DURING THE L.C PERIOD ,P.CHANTHAI 230KVSS ALSO PROGRAMMED TO AVAIL subject to the load 1078 Erode 230 KV UNJANAI 230 KV BREAKER , CT'S AND LINESIDEISOLATOR FOR MONTHLY MAINTENANCE WORK possible Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 Approved L.C ON THE SAME FEEDER ON THAT DAY condition existing ONLY.

TUTICORIN -AUTO 230 On 230 KV TTN - TTPS -II # breaker with CT 1079 Madurai 230 KV For Monthly Maintenance Work No SS will be affected. POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 Sub to TTPS gen Approved KV bus and line side switches

110KV ALKL-SMPTY 1 # breaker with During the L.C period the feeder will be radial from other end,Hence there will be no SUB TO LOAD 1080 Madurai 110 KV ALAGARKOIL 230 KV for monthly maintenance work . POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 14:00 1 Approved C.T.only. interruption of supply please. CONDITION

subject to the 110 KV Salem I # - Its CT, BREAKER, BUS & 1081 Erode 110 KV Salem 400 KV Monthly Maintenance Work Both end avail LC, Salem Traction will fed from Salem II #. possible Sat, 22-Apr-2017 8:00 Sat, 22-Apr-2017 14:00 1 feeder 2 loading Approved LINE SWITCHES condition

CHECKANURANI SW For Monthly Maintenance work and Line 1082 Madurai 230 KV 230KV CKNI-Kayathar-II feeder Entire During LC Period there will be no supply in the entire feeder POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 0 Approved STATION 230 KV Maintenance Work

110 KV THENI-PERIYAR II # (SECTION FOR MONTHLY MAINTENANCE AND NO INTERRUPTION TO ANY SS THEVARAM SS WILL BE RADIAL FROM THENI SS & Sub to load 1083 Madurai 110 KV then I 230 KV BETWEEN THEVARAM SS AND CUMBUM POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 Approved PREMONSOON INSPECTION WORK. CUMBUM SS WILL BE RADIAL FROM PERIYAR POWER HOUSE. condition SS)

110KV Kadalangudy- Aduthurai- Neyveli TS I 1)Line inspection and rectification work No interruption to any SS. 110KV Thirupanandal and Thirupurambium SS proposed to sub to Ney 1084 Madurai 110 KV KADALANGUDI 230 KV feeder (Portion between Kadalangudy, POSSIBLE Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 16:00 1 Approved 2)Maintenance work shutdown. 110KV Jayankondam and Papakudy SS supply fed from Neyveli TS I. Loading Aduthurai and Thirupanandal SS)

110KV KNMLM - Thirumangalam - Then feeder will be radially fed from 230kv SS PSQ. Thirumangalam SS availing total 1085 Madurai 110 KV kinnimangalam 230 KV Monthly maintenance works for Breaker and CT POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 13:00 1 0 Approved Pasumalai # shutdown

During LC period230KV Pugalur and Deviakurichy feeders will be kept tied with PUDHANCHANTHAI 230 230KV Unjanai feeder CB, CTs, CVTs, Wave subject to the load 1086 Erode 230 KV For regular maintenance works. grid.230KV Unjanai end also availing LC in the same feeder at opposite end.No supply possible Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 Approved KV Traps and 230KV Switches. condition existing interruption.

During the L.C Period 1) 110KV KKDI- Alakarkoil #'r will be radial from other On 110KV KKDI- Alkarkoil #'r S/B KKDI - 1087 Madurai 110 KV KARAIKUDI 230 KV For Tree Cutting Work. End.2)110KV Tirupathur & A.Thekkur SS under TSD. Hence there will be No interruption POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 0 Approved TPR. of Supply.

RENGANATHAPURAM 1)230KV RNPM-Pugalur # Br,CT's & line Sub to CKNI ICT 1088 Madurai 230 KV 1)Monthly Maintenance works2)Tree cutting works During LC period other end also programmed for availing LC in this feeder. POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 16:00 1 Approved 230 KV switch2)230KV RNPM - Pugalur # Entire line Loading A) 110 KV KAVANOOR-R.S.MADAI-VGTPS # BR. & C.T. B) 110 KV KAVANOOR- MONTHLY MAINTENANCE WORKS AND LINE 1089 Madurai 110 KV KAVANOOR 230 KV FEEDER TO BE KEPT RADIAL FROM VGTPS POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 0 Approved R.S.MADAI-VGTPS # SEC. BET. MAINTENANCE WORKS KAVANOOR AND R.S.MADAI

230kv Main Bus Section Beyond 230kv SW 1.Annual Maintenance of 230kv Bus section beyond 1.During the LC period the Auto Tr., Will be Fed from Transfer BusCoupler Breaker. Sub to wind gen 1090 Madurai 230 KV UDAYATHUR 230 KV 89MC & 230kv PoWerTr 3 & 4,HV & Bus couplr Sw 89MC and Main Bus side sw of Auto 2)There willbe nosupply to Power Tr3 &4. Powr Tr3 & 4 loads willbe fed from other Power POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 14:00 1 and no blocking of Approved LVBreaker Tr, Power Tr 3 &4 Trs wind gen

During LC period, 1) 110KV Kovilur feeder Line switch towards Trichy 230KV SS will be kept opened at 110KV Puthanatham SS. 2) 110KV Kovilur feeder Line switch towards 1. 110KV Trichy - Kovilur feeder breaker, Puthanatham SS will be kept opened at Trichy 230KV SS. 3)110KV Manapparai SS and CTs, line isolator and Line portion between a) For monthly maintenance works. b) Pre monsoon Kavalkaranpatty 110KV SS availing total shut down for monthly maintenance works. 4) 1091 Madurai 110 KV TRICHY 230 KV POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 16:00 1 0 Approved 230KV SS Trichy and 110KV Puthanatham inspection 110KV Trichy - Kovilur feeder will be radial from 230KV Renganathapuram SS up to SS. 110KV SS Puthanatham SS. 5) All other 110KV feeders will be in tied condition. 6) There will be no interruption of supply to any of the intermediate SS. 7) Necessary concurrence to be obtained from 230 KV Renganathapuram SS.

1. All 110KV bus isolator maintenance work, 2. 1) 110KV BUS ENTIRE 1) 110KV BUS NOT Feeder condition 1092 Madurai 110 KV TRICHY 230 KV 110KV bus coupler alignment checking and 0 Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 16:00 1 Not considered ENTIRE POSSIBLE not mentioned maintenance work.

During the LC period the following SS has programmed total shutdown on the same day. Hence there will be no interruption of supply to (1) 110 KV Nagappattinam SS (2) 110 KV Thiruthuraipoondi SS (3)110 KV Thirukuvalai SS (4)110 KV Voimedu SS.(5) 110KV Surakudi SS - Karaikkal (6)110 KV Kovilvenni SS (7)110KV Vaduvur SS (8) 110 KV Kodavasal (9) 110KV Thiruvarur SS.(10) 110 KV Thiruvarur - Thanjavur feeder breaker tie will be opened at Thiruvarur end.110 KV Thanjavur urban SS,110KV Manimandapam SS, Erection of Bus sectionalizing arrangement work, 110 KV Mariamman kovil SS, 110 KV Ayyampettai SS, 110 KV Poondi SS and loads will erection of 110KV Bus Coupler Breaker -II Work, 1093 Madurai 110 KV THIRUVARUR 230 KV 110KV BUS LC Entire be fed radially from 110KV Grid SS/Thanjavur. (11) 110 KV Mannargudi SS load will be POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 sub to Total s/d Approved Shifting, Erection of 1No. 110KV Bus PT & 110KV fed radially from T(K)GTPS, 110KV Mannargudi feeder tie opened at Thiruvarur end. (12) Bus Maintenance works. 110 KV Peralam SS load will be fed radially from 110KV Grid SS Mayiladuthurai, 110KV Mayiladuthurai feeder tie opened at Thiruvarur end. (13) 110KV KGTPP feeder tie opened at Thiruvarur end. (14) 110 KV T(K)GTPS express feeder tie will be opened at Thiruvarur end. (15) 110 KV Narimanam I and II feeders will be hand tripped at Thiruvarur end. (16) 110 KV T.R.Pattinam feeder will be hand tripped at Thiruvarur end. (18) Auto Transformer I , II & III will be kept isolated. (19) All the 230 KV feeders will be in tied condition. (20) 110 KV Suruliyar - Kayathar feeder breaker During the LC period, the feeder will be radially fed from other end upto Suruliyar PH. No 1094 Madurai 110 KV SURULIYAR For monthly maintenance work. POSSIBLE Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 14:00 1 0 Approved with CT only ss will be affected. During the LC period 110KV Thiruthuraipoondi SS, 110KV Thirukuvalai SS & 110KV Line premansoon Inspection and rectification work, 1095 Madurai 110 KV THIRUVARUR 230 KV 110KV Thiruvarur - Thiruthuraipoondi feeder Voimedu SS availed shunt down on the same day. Hence there will be no interruption of POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 0 Approved Breaker, CT's and Isolator maintenance work. supply to any other substation. DURING THE PERIOD OF SHUTDOWN , EXCEPT 110 KV SEMBIUM FEEDER ALL 1096 Chennai 110 KV TONDIARPET 230 KV 110 KV SEMBIUM FEEDER FOR ROUTINE MAINTENANCE WORKS. Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 13:00 1 0 Approved OTHER FEEDERS AND EQUIPMENTS WILL BE IN SERVICE. 110KV Capacitor bank I and II Bkr, CTs and SE/O/MDU 1097 Madurai 110 KV SEMBATTY 230 KV Monthly maintenance work During the LC period the capacitor bank willbe in switched off condition. 0 Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 17:00 1 Approved cells Approval 230 KV MYVADI - PUGALUR FEEDER subject to the load 1098 Erode 230 KV Udumalpet 400 KV MONTHLY MAINTENANCE WORK BOTH END AVAIL LC possible Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 Approved BREAKER, CT AND LINE ENTIRE condition existing Monthly Maintenance work, Breaker clamp tightening During the Period of Shut down the 110KV Polur SS is availing Total Shut down. 110KV 110KV Arani -Singarapet Feeder I 1099 Chennai 110 KV ARNI 230 KV work, 110KV CT Clamp replacement, and Line Adamangalam SS loads already fed from 230KV T.V Malai SS. Hence there will be no Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 14:00 1 0 Approved Breaker,110KV CTs and line isolator Isolator Bolt Nuts replacement work interruption of Supply. 110KV Arani - Singarapet II Feeder, 110KV For 110KV Breaker Monthly Maintenance work, CT At present the 110KV Arani- Singarapet II feeder is in Hand tripped condition. Hence there 1100 Chennai 110 KV ARNI 230 KV Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 14:00 1 0 Repeat CTs and Line isolator Clamp, and Bolt Nuts replacement work. will be no Interruption of supply. Subject to load 1101 Chennai 230 KV Thiruvalam 400 KV 230Kv Thiruvalam Link -I feeder Maintenance & GRT periodical relay testing 1)230Kv Thiruvalam Link -I feeder kept in OFF condition at both end. Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 17:00 1 Approved condition 1.110KV Coimbatore Feeder Breaker and subject to 1102 Erode 110 KV COIMBATORE 230 KV CTs2.Auto Transformer I(HV, LV breakers, For Monthly Maintenance Works Scheduled Shutdown at 110/11KV Coimbatore SS possible Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 16:00 1 coimbatore ss Approved CTs and LAS) availing tsd 230KV Kadalangudy- Neively TS II feeder 1)Maintenance work 2)Relay testing work at Sub to load 1103 Madurai 230 KV KADALANGUDI 230 KV No interruption to any SS. All other feeders will be in tied condition. POSSIBLE Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 17:00 1 Approved entire Kadalangudy end. condition Sub to wind gen 110 KV ALANGULAM # BREAKER & CT 110 KV ALANGULAM SS WILL BE BED FEOM 230/110 KV KODIKURICHI SS .HENCE 1104 Madurai 110 KV kamuthi 400 KV MONTHLY MAINTENANCE WORK POSSIBLE Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 17:00 1 and no blocking of Approved ONLY NO SUPPLY AFFECTED wind gen 110KV ACHARAPAKKAM - VANDAVASI 1105 Chennai 110 KV ACHRAPAKKAM 230 KV TO CARRYOUT MONTHLY MAINTENANCE WORK 1.110KV VANDAVASI FEEDER WILL BE RADIALLY CHARGED FROM OTHER END. Possible Sat, 22-Apr-2017 00:00 Sat, 22-Apr-2017 00:00 1 0 Approved FEEDER BREAKERS AND CT'S subject to thiruppathur ss During the period of LC 1.110 KV Tirupattur SS end Total shutdown programmed,2.110 availing tsd and 110 KV Tirupattur # Breaker, CTs & line To carry monthly maintenance work by 1106 Erode 110 KV SINGARAPET 230 KV KV Tirupattur Railway traction SS load will be fed to 230 KV SS Vinnamangalam through possible Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 15:00 1 traction supply Approved isolators AEE/MTC/230 KV SS / SPT being transferred to vinnamangalam ss

During the LC period1. Auto Transformer I and LV I breaker will be in off condition2. Auto Transformer II and III will be in service3. 110KV Tirupattur SS total shutdown approved subject to the To carry monthly maintenance work by 1107 Erode 230 KV SINGARAPET 230 KV Auto transformer I, LV I Breaker & CTs (42MW)and 110KV Tirupattur # Breaker will be in hand trip condition at Singarapet end4. possible Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 15:00 1 other auto trs Approved AEE/MTC/230 KV SS / SPT 110KV Tirupattur Railway traction SS loads will be fed from Vinnamangalam 230KV SS loading limit 5. The 110KV Link I, Link II and Ramiyanahally feeders will be in service 100 MVA Auto Transformer-II, HV-II, LV-II, During the above Shutdown Period 100 MVA Auto Transformer I will be in service. No 1108 Madurai 230 KV SAMAYAPURAM 230 KV Monthly Maintenance Work POSISBLE Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 17:00 1 0 Approved Breakers , CT's, and isolators interruption to any other SS subject to the 1109 Erode 110 KV THUDIALUR 230 KV 110KV Capacitor Bank I & II one by one For monthly mtce works During the LC period, other Capacitor Bank will be in service approved Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 voltage level in the Approved grid

a) On 230 KV SR Puthur - Sankaneri feeder a) Tower toTower Inspection.Checking of During the LC period 230 KV SR Puthur -Koodankulam feeder will be in service. Hence 1110 Madurai 230 KV SRPUDUR 230 KV POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 14:00 1 sub to wind gen Approved Entire Healthyness of Jumper b. Annual relay testing work No SS will be affected.

230KV Sankaneri-SRputhoor feeder For monthly maintenance & GRT Annual Relay During the LC Period There willbe no supply inthe Entire feeder, Other end also LC 1111 Madurai 230 KV SANKANERI 230 KV POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 14:00 1 sub to wind gen Approved Breaker,CTs&Lineswitches. Testing. applied.

subject to the 110 KV Capacitor Banik -III Br,CTs and 1112 Erode 110 KV ARASUR 230 KV For Monthly maintenance work During the LC Period other 2 Nos of Capacitor bank will be in service. approved Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 12:00 1 voltage level in the Approved Cellunits. grid subject to 110 KV SIPCOT # SF6 Bkr,CTS & Line During the LC period 110KV Pochampally SIPCOT SS availing total shutdown, hence no 1113 Erode 110 KV Singarapet 110 KV Monthly maintenance work possible Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 15:00 1 pochampalli sipcot Approved Isolator interruption of supply ss availing tsd During LC period, 1) 110KV Kovilur feeder Line switch towards Trichy 230KV SS will be kept opened at 110KV Puthanatham SS. 2) 110KV Kovilur feeder Line switch towards 1. 110KV Trichy - Kovilur feeder breaker, Puthanatham SS will be kept opened at Trichy 230KV SS. 3)110KV Manapparai SS and For over head crossing the proposed LILO of CTs, line isolator and Line portion between Kavalkaranpatty 110KV SS availing total shut down for monthly maintenance works. 4) 1114 Madurai 110 KV TRICHY 230 KV Alandur-Alagarkoil 230kv line at Mondipatty 230kvss 0 Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 repeat Repeat 230KV SS Trichy and 110KV Puthanatham 110KV Trichy - Kovilur feeder will be radial from 230KV Renganathapuram SS up to (section between Manaparai & Alandur) SS. 110KV SS Puthanatham SS. 5) All other 110KV feeders will be in tied condition. 6) There will be no interruption of supply to any of the intermediate SS. 7) Necessary concurrence to be obtained from 230 KV Renganathapuram SS.

subject to the feeder being kept 110KV Singapuram Feeder-II Breakers, and 1. 110KV Singapuram feeder-II feeder will be radially fed from other ends. 2. There will be 1115 Erode 230 KV SALEM AUTO 230 KV Monthly Maintenance work. possible Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 radial from Approved CT's. no interruption to any SS or feeder. singapuram ss end ponnapuram ss 1116 Erode 230 KV INGUR 230 KV MONTHLY MAINTENANCE WORKS DEPENDING UPON LOAD CONDITION postponed Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 14:00 1 end auto tr lc Approved recommended ponnapuram ss Subject to 110KV Ponnapuram # II Breaker, CTs, 1117 Erode 110 KV INGUR 230 KV MONTHLY MAINTENANCE WORKS DEPENDING UPON LOAD CONDITION postponed Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 14:00 1 end auto tr lc EE/SLDC/Erode ,Isolators and Line side Isolator recommended approval 110 KV UTHUMALAI # BREAKER AND CT 110 KV UTHUMALAI SS ALSO PROGRAMMED SHUTDOWN ON SAME DATE ,NO SS SUB TO WIND Approved Subject to 1118 Madurai 110 KV kamuthi 400 KV MONTHLY MAINTENANCE WORK POSISBLE Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 14:00 1 ONLY AFFECTED GEN. wind Generation

GUMMIDIPOONDI 230 Monthly Maintenance work,CT clamp and bolt, nuts 1119 Chennai 110 KV 110KV Durainallur feeder during the period of shutdown the 110KV Durainallur SS availing total shut down Possible Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 17:00 1 0 Approved KV replacement work

1. 110KV PETHAPPAMPATTY # WILL BE KEPT RADIAL FROM 230KV UDT SS UP TO subject to the load THIS END2. 110KV THUNGAVY # WILL BE KEPT RADIAL FROM 230KV UDT SS UP condition existing 1120 Erode 230 KV PONNAPURAM 230 KV AUTO-II ,HV-II,LV-II Breaker and Its CTs Monthly Maintenance works. TO THIS END 3. 110KV DHARAPURAM SS WILL BE AVAIL TOTAL SHUTDOWN ON possible Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 17:00 1 Approved and the other auto 22.04.20173. HENCE, IT IS EXPECTED THAT THE LOADS WILL BE WITH IN THE trs loading limit LIMITS OF OTHER TWO AUTO TR's 4. HENCE NO SS WILL BE AFFECTED.

110 KV Kayathar - Kodayar # breaker with 1121 Madurai 110 KV KAYATHAR 230 KV For Monthly Maintenanace work During the LC period other end also avails LC. Hence, No ss affected POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 0 Approved CT only.

1,Total shutdown has been approved by CE/D/Vellore vide Memo. No.:CE/D/VLR/EE/AEE/Gl/ F. Shut down/ D. 142 /2017, Dt:21.03.2017 and 22.04.2017 ---Auto Transformers No.II & For replacing the defective surge monitors in VINNAMANGALAM 230 SE/D/Tirupatture vide Memo.No:SE/TEDC/TPR/ Gen / AE / F.Shutdown/D.3287/17, 1122 Erode 230 KV 110KV V.patty #, Tirupattur # breakers, 230/110 KV LAS, for carrying out routine monthly Possible Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 14:00 1 0 Approved KV dt:21.03.2017.2,2,During the totalshutdown on 22.04.2017 , there will be no supply to maintenance works. following 110/11 KV sub station,1) Chinnavarikkam SS, 2) Pernambut SS,3) Paravakkal SS,4) Vaniyambadi SS,5) Alangayam SS. During the LC period,1) Vaduvur 110 KV SS will avail shutdown on the same day,2) no 1123 Erode 110 KV Krishnagiri 110 KV 110 KV Kovilvenni - Vaduvur feeder. For carrying out premonsoon inspection works. POSSIBLE Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 17:00 1 0 Approved supply interruption to any SS. During the LC period,1) all 110 KV & 230 KV feeders will be in tied condition,2) 230 KV 110 KV and 230 KV Bus-Coupler breakers For monthly maintenance works by the 1124 Madurai 110 KV THANJAVUR 230 KV Bus-Coupler breaker is already kept in standby condition,3) no supply interruption to any POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 0 Approved (one by one) AEE/Mtce/Thanjavur. SS.

1) DURING THE LC PERIOD 110KV PATTUKKOTTAI, PATTUKKOTTAI URBAN SS WILL AVAIL TOTAL SHUTDOWN.2) DURING THE LC PERIOD 110KV PERAVURANI, A) 110KV NEMMELI THIPPIYAKUDI - A) FOR MONTHLY MAINTENANCE WORK BY SETHUBAVACHITRAM AND KEERAMANGALAM SS WILL BE FED FROM 110KV PATTUKKOTTAI-I FEEDER BREAKER, CT's AEE/MTC/NEMMELI THIPPIYAKUDI.B) NEMMELI THIPPIYAKUDI - PATTUKKOTTAI-II FEEDER.3) NO INTERRUPTION TO Sub to load 1125 Madurai 110 KV THIRUVARUR 230 KV AND LINE ISOLATOR. B) 110KV NEMMELI POSSIBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 Approved PREMONSOON INSPECTION WORK BY ANY OTHER SUBSTATIONS AND ALL OTHER 110KV FEEDERS ARE TIED condition THIPPIYAKUDI - PATTUKKOTTAI-I FEEDER AE/LINES/PATTUKKOTTAI. CONDITION. 4) If necessary, 110KV Kovilkalappal-Madukkur-Pattukkottai tie will be ENTIRE. created (by closing the 110KV Line Isolator (switch No.2) at 110KV Madukkur SS and 110KV Madukkur feeder Breaker hand tripped condition at 230KV N T Kudi SS.

During above period of shut down1)110KV Kallakudy -I feeder and 110KV DSSL 1)230/110KV Auto-III,HV-III,LV-III Breakers For monthly maintenance works and annual 1126 Madurai 230 KV PERAMBALUR 230 KV (Krishnapuram)feeder tie will be opened at Perambalur SS. 2)The remaining loads will be POSSIBLE Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 16:00 1 0 Approved CT'S & Isolaters only. maintenance ralay test by wing /GRT/Trichy fed Through Auto Transfermer III(100MVA) of Perambalur Auto SS.

subject to the tsd 230 /110kv Autotransformer - II HV/LV 110kv Avinashi SS total shutdown and 110kv Karuvalur - Arasur II feeder kept radial from 1127 Erode 230 KV KARUVALUR 230 KV For monthly maintenance work possible Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 relief being Approved breaker CTs and LAS 230kv Arasur and 110kv Earipalayam SS fed from 230kv Arasur SS realized

110kv Karuvalur - Arasur I feeder breaker For monthly maintenance work and for PMI by 110kv AVINASHI SS TOTAL SHUTDOWN AND 110kv Earipalayam SS fed from 230kv subject to avinashi 1128 Erode 110 KV KARUVALUR 230 KV possible Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 Approved CTs and line switch palladam lines Arasur SS radially ss availing tsd

GENERATI UNIT-I GENERATTOR SF6 BREAKER, 1129 Erode NG KUNDAH PH2 POWER TRANSFORMER AND ITS FOR MONTHLY MAINTENANCE WORK SF6 BREAKER OFF IN CONDITION TOP AND BOTTOM BUS OPEN IN CONDITION 0 Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 SLDCErode Approved STATIONS ACCESSIORIES

subject to jagathala ss availing tsd and the supply being 110KV Jagathala spurline on 110KV PMI works in between Loc.01 and 21 by At Kattabettu switching station, the Switch 'S2'& ;S3' (Bottom)Switches will be opened extended to 1130 Erode 110 KV KARAMADAI 230 KV possible Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 Approved Thudiyalur-Sandinallah Main Line. AE/Lines/Kattabettu and switch 'S3 kothagiri and kattabettu ss from 110 kv mtplm to mathampalayam feeder 1. Autotransformer - II, Breaker, CT's and LAS,2. 110 KV Tiruvannamalai Link #, During the period of L/C time,1. 110 KV Tiruvannamalai SS & 110 KV Vinnavanur SS THIRUVANNAMALAI 230 Subject to load 1131 Chennai 230 KV Breaker, CT's and Line Isolator,3. 110 KV Monthly maintenance work availing total S/D,2. Autotransformer-II will be OFF condition,3. Autotransformer - I will be Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 17:00 1 Approved KV condition Tiruvannamalai - Vinnavanur #, Breaker, in service and cater the station loads. Hence there is no interruption of supply please. CT'and Line Isolator. 110KV PYKARA - MOYAR 2 # (BREAKER feeder 1 will be in 1132 Erode 110 KV PYKARA FOR MONTHLY MAINTENANCE WORK NIL possible Sat, 22-Apr-2017 8:00 Sat, 22-Apr-2017 17:00 1 Approved AND CT) service

For checking jumper tightness at railway crossing Durind the period of LCHence NO Interruption of SupplyConcurrence obtained from Concurrence from 1133 Chennai 110 KV CUDDALORE 230 KV Section between SASL Co Gen to Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 17:00 1 Approved locations. Loc.Nos. 3 - 4 SE/O/Villupuram SLDC/Madurai Eachangadu SS 110 KV Neyveli- villupuram IISection between During the period of LCHence NO Interruption of SupplyConcurrence obtained from Subject to load 1134 Chennai 110 KV CUDDALORE 230 KV For checking jumper tightness at railway crossing Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 17:00 1 Approved Arasur SS to 110 KV Villupuram SS SE/O/Villupuram condition

1135 Chennai 110 KV THIRUVALAM 230 KV between 110KV Katpadi SS to110KV Vellore For replacement of aged disc at loc: 90. Vellore SS-110KV Katpadi SS.ii. The 110KV Thorapadi SS, 110KV Vellore SS are Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 14:00 1 0 Approved SS). availing total Shutdown. Hence there will be no interruption of supply please.

For Jumper tightness checking at Loc: 17 and EHT Subject to load 1136 Chennai 230 KV THIRUVALAM 230 KV 230KV Thiruvalam - Link I feeder. Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 14:00 1 Approved Line Maintenance Works. feeders 230KV Link II, Singarapet, S.P.Koil feeders are in service.Hence there will be no condition interruption of supply please.

During the period of LC i) The 110KV Vellore SS, 110KV Thorapadi SS, of VEDC/Vellore are availing Total shutdown on 22.04.2017.The Total shutdown approved and concurrence obtained by Chief Engineer/Distribution / Vellore ii) Auto-Tr-I ,HV-I,LV-I, Auto beakers and its Ctsii) On 110KV Vellore-II i)For fixing of O/L&E/L Relay in 110KV Velore-II 1137 Chennai 230 KV THIRUVALAM 230 KV Feeder by GRT Wing /Thiruvalam and monthly Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 17:00 1 0 Approved O/L & E/L Relay in 110KV Vellore-II Feeder maintenance work. and monthly maintenance workiii)On 230KV 230KV Mosur feeders will be in service and cater the SS Loads. Hence there will be no interruption of supply please.

1138 Chennai 230 KV VILLUPURAM 230 KV 230KV Ulundurpet-Villupuram -# For monthly maintenance works Other 230KV feeders will be in service (For tightening of jumpers 0 Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 17:00 1 Approved

1139 Chennai 110 KV Villapuram 110 KV 110 KV VPM- Acharapakkam-I# Breaker & CT maintenance works Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 17:00 1 0 Approved jumpers tightening works in the line between Villupuram

1140 Chennai 110 KV Villapuram 110 KV 110KV VPM-T.V.Malai-# Breaker & CT maintenance works Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 17:00 1 0 Approved jumpers tightening works in the line between Villupuram

1.Monthly Maintenance 110KV Deviyakurichi II Feeder will be fed radially from subject to athur ss 1141 Erode 110 KV SINGAPURAM 230 KV 110KV Deviyakurichi- II Feeder(CT,Breaker) Monthly Maintenance Deviyakurichi end and 110/22KV Athur SS is availing TSD on 22.04.2017.2.There will be possible Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 Approved availing tsd no interrupted to the intermediate SS.

DURING THE PERIOD OF SHUTDOWN 1)110KV EASTERN BUS,100MVA Auto Transformer-I ,110KV Siruseri-I# & 110KV TCS # will not be inservice.2)110KV Siruseri-I# 1142 Chennai 110 KV SIRUSERI 230 KV 110 KV Eastern Bus & 110 KV Siruseri -I # Maintenance work Possible Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 17:00 1 0 Approved load will be fed by 110KV Siruseri-II# of 230KV Siruseri SS. 3)110KV TCS # load will be fed from 110KV Siruseri SS DURING THE PERIOD OF SHUTDOWN 1)110KV EASTERN BUS,100MVA Auto Transformer-I ,110KV Siruseri-I# & 110KV TCS # will not be inservice.2)110KV Siruseri-I# 1143 Chennai 230 KV SIRUSERI 230 KV 110 KV Eastern Bus & 110 KV Siruseri -I # Maintenance work Repeat Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 17:00 1 0 Repeat load will be fed by 110KV Siruseri-II# of 230KV Siruseri SS. 3)110KV TCS # load will be fed from 110KV Siruseri SS 1.100 MVA AUTO TR.I & II Will be inservice cater the entire ss loads,2.110 kv s p koil# 1144 Chennai 230 KV ACHRAPAKKAM 230 KV 100 MVA AUTO TR.III FOR MONTHLY MAINTENANCE WORK Possible Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 12:00 1 0 Approved and Korattur-II # Will be radial from other end 230KV KPH2 to KPH3 Feeder Pre-Monsoon subject to the load 1145 Erode 230 KV KUNDAH PH3 230KV KPH2 to KPH3 Feeder Bus and Line both end open condition Earth switch closed condition. possible Sat, 22-Apr-2017 8:00 Sat, 22-Apr-2017 17:00 1 Approved Inspection work(PMI) and Maintenance work. condition existing Possible OCC 1146 Chennai 230 KV THARAMANI 230 KV 230 KV Kalivanthapattu feeder Qtrly. Mtce. work other 230 KV Feeders will be in service Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 17:00 1 0 Approved Appd.159 LC approved on 230KV Kadalangudy- Neively TS II feeder 1)Line inspection and rectification work 22.04.17 and 1147 Madurai 230 KV KADALANGUDI 230 KV No interruption to any SS. All other feeders will be in tied condition. POSISBLE Sat, 22-Apr-2017 9:00 Sat, 22-Apr-2017 17:00 1 Approved entire 2)Maintenance work programmed accordingly Possible with 1148 Chennai 110 KV Kadaperi 230kv 110 KV KITS- Madampakkam # Insulator Replacement at loc.2 CBD Sat, 22-Apr-2017 09:00 Sat, 22-Apr-2017 12:00 1 0 Not approved Concurrence LC approved on 230KV Kadalangudy- Neively TS II feeder 1)Monthly maintenance work 2)Relay testing work at 22.4.17 and LC 1149 Madurai 230 KV KADALANGUDI 230 KV No interruption to any SS. All other feeders will be in tied condition. POSISBLE Sat, 22-Apr-2017 10:00 Sat, 22-Apr-2017 17:00 1 Approved entire Kadalangudy end. programmed accordingly ONLY 70MW CHECKANURANI SW For Monthly Maintenance work and Line During the LC Period, there will be no supply in the entire feeder and About 100MW NOT TOTAL S/D. Approved Subject to 1150 Madurai 230 KV 230KV CKNI-Sembatty Feeder Sun, 23-Apr-2017 9:00 Sun, 23-Apr-2017 17:00 1 STATION 230 KV Maintenance work Shutdown has been proposed in sembatty area. POSSIBLE MORE S/D load condition NEEDED ONLY 70MW During the LC period the other end is also availing LC. Load relief: Thadicombu SS - 230KV SBT - CKNI # Bkr, CTs, relays and 1. Monthly maintenance work2. Tree cutting work3. NOT TOTAL S/D. Approved Subject to 1151 Madurai 230 KV SEMBATTY 230 KV 30MW, Thamaraipadi SS - 16 MW, Dindigul SS - 16 MW, V.K.Patti SS - 8 MW, total - 70 Sun, 23-Apr-2017 9:00 Sun, 23-Apr-2017 17:00 1 line entire Annual relay testing work POSSIBLE MORE S/D load condition MW NEEDED Breaker Isolator rectification work and monthly GUMMIDIPOONDI 230 1152 Chennai 230 KV 230KV NCTPS feeder bay maintenance work , CT cmanp and bolt nuts Concurance may be obtained from OD/NCTPS To be discuss Sun, 23-Apr-2017 10:00 Sun, 23-Apr-2017 17:00 1 0 Approved KV replacement work 230KV MIDDLE BUS SECTION WEAK JUMPERS 1.230KV TPT-NCTPS-II FEEDER WILL NOT BE IN SERVICE.2. 100 MVA AUTO TR-I 1153 Chennai 230 KV TONDIARPET 230 KV 230KV MIDDLE BUS SECTION REPLACEMENT AND CLAMPS TIGHTNESS WILL NOT BE IN SERVICE.3. 230KV LOAD TO BE RESTRICTED TO TWO SOURCE To be discuss Sun, 23-Apr-2017 06:00 Sun, 23-Apr-2017 17:00 1 0 Approved CHECK. FEEDERS. a.110kv Panjetty feeder 110 kv Metrowater and 110kv Korattur feeder loads will be 1.For jumpering of 230kv OH line and 230kv Cable transferred to other endsAfter the LCa.230kv Alamathy-2 feeder will be in service via GIS 230kv Alamathy-2 and 230kv Mylapore point in Alamathy-2 feeder2.For looping of 230kv 1154 Chennai 230 KV MANALI 230 KV bay No-207and 230kv line switch in Alamathy-2 feeder will be kept open at AIS SS end b. To be discuss Sun, 23-Apr-2017 06:00 Sun, 23-Apr-2017 11:00 1 0 Pending feeders feeder at LOC-1 tower. feeder jumper towards will be kept open at LOC-1 tower.

For replacement of flashed over insulators at loc 59 During the period of LC 230 KV Deviakurichi SS will be fed from Budansandai 1155 Chennai 230 KV CUDDALORE 230 KV 230 KV Taqa-Deviakurichi # and for checking jumper tightness at railway &K.R.thoppu EndHence NO Interruption of SupplyConcurrence obtained from Possible Sun, 23-Apr-2017 09:00 Sun, 23-Apr-2017 17:00 1 Possible Approved crossing location. Loc.Nos.62-63 & 103-104. SE/O/Villupuram

230KV KPH3 to Karamadai feeder Tower No:73-82 230 kv arasur to 1156 Erode 230 KV KUNDAH PH3 230KV KPH3 to Karamadai feeder Pre-Monsoon Inspection work(PMI) and Bus and Line both end open condition Earth switch closed condition. postponed Sun, 23-Apr-2017 9:00 Sun, 23-Apr-2017 17:00 1 gobi feeder lc Approved Maintenance work. recommended

Monthly maintenance of 110KV Kayathar feeder SF6 1157 Madurai 110 KV KODAIYAR PH2 110KV KAYATHAR FEEDER SF6 BREAKER Feeder will be radial from other end. Hence no SS will be affected. POSISBLE Sun, 23-Apr-2017 9:00 Sun, 23-Apr-2017 17:00 1 Approved breaker

3 days lc subject GENERATI to the grid NEW ABB DIFFERENTIAL PROTECTION RELAY DURING THE ABOVE LC PERIOD THE UNIT NO 2 WILL BE UNDER NOT S/B 1158 Erode NG KUNDAH PH5 UNIT NO:02 possible Sun, 23-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 3 condition and the Approved COMMISSIONING WORK BY GRT WING KUNDAH CONDITION. STATIONS other unit being available GENERATI subject to the grid 1159 Erode NG KUNDAH PH3 Unit III For monthly maintenance Unit under shutdown condition, SF6 breaker open condition possible Sun, 23-Apr-2017 8:00 Sun, 23-Apr-2017 17:00 1 Approved condition existing STATIONS

Subject to load 1160 Chennai 230 KV KORATTUR 230 KV 100MVA AUTO TRANSFORMER - II General Maintenance work 100MVA Auto TRANSFORMER - I & III will be inservice Possible Sun, 23-Apr-2017 09:00 Sun, 23-Apr-2017 17:00 1 Approved condition

For attending alignment problem of 230 KV SPR 230 KV SPR Feeder & 100 MVA Auto Transformer-I not in service. Load may be 1161 Chennai 230 KV KOYAMBEDU 230 KV 230 KV Southern Bus Possible Sun, 23-Apr-2017 10:00 Sun, 23-Apr-2017 17:00 1 0 Approved Feeder- Bus side Isolator restricted within 230 Kv GIS Feeder and 100 MVA Auto Transfomer II & III

DURING THE PERIOD OF SHUTDOWN , EXCEPT 230 KV ETPS FEEDER ALL OTHER 1162 Chennai 230 KV TONDIARPET 230 KV 230 KV ETPS FEEDER FOR ROUTINE MAINTENANCE WORKS. Possible Sun, 23-Apr-2017 09:00 Sun, 23-Apr-2017 13:00 1 0 Approved FEEDERS AND EQUIPMENTS WILL BE IN SERVICE.

Already approved 1163 Chennai 230 KV KORATTUR 230 KV 230 KV Gumidipoondi - Sulurpet feeder Jumper Tightness at various location All other feeder will be in services To be discuss Sun, 23-Apr-2017 08:00 Sun, 23-Apr-2017 18:00 1 Approved on 18th April 2017

Auto-4,400/110kv,200MVA & 110KV Western Monthly maintenace and Half yearly Bus mainteance Possible OCC 1164 Chennai 400 KV Sriperumbudur 400 KV During the period of shutdown Auto-5 will be in service Sun, 23-Apr-2017 09:00 Sun, 23-Apr-2017 17:00 1 0 Approved Bus enitre work Appd 129/199

subject to the load 1165 Erode 110 KV THUDIALUR 230 KV 110KV Geddai I & II feeders one by one For monthly mtce works Being Sunday load will be minimum. During the LC period other feeder will be in service possible Sun, 23-Apr-2017 9:00 Sun, 23-Apr-2017 15:00 1 Approved condition existing

110KV THUDIYALUR FEEDER NO 1&2 SF6 1166 Erode 110 KV KUNDAH PH2 FOR MONTHLY MAINTENANCE WORK SF6 BREAKER OFF IN CONDITION TOP AND BOTTOM BUS OPEN IN CONDITION 0 Sun, 23-Apr-2017 9:00 Sun, 23-Apr-2017 17:00 1 SLDC/Erode Approved BREAKER AND ITS ACCESSIORIES

GENERATI 3 days lc subject 1167 Erode NG PUSHEP UNIT 1 NEED BASE MAINTENANCE WORK UNIT 1 IN SHUTDOWN CONDITION possible Sun, 23-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 3 to the grid Approved STATIONS condition existing

For EHT Line Maintenance Works(Jumper tightness 1168 Chennai 110 KV THIRUVALAM 230 KV Possible Sun, 23-Apr-2017 09:00 Sun, 23-Apr-2017 14:00 1 0 Approved checking work). Kaveripakam SS and Sipcot SS are availing total Shutdown. Hence there will be no Kaveripakkam SS). interruption of supply please. During the period of LC i)The 110KV Kaveripakkam SS are transferred to 230KV Arni SS and 110KV Sipcot SS are availing Total Shutdown on 23.04.2017 ii)Auto-Tr-I ,HV-I,LV-I, i)On 110KV Kaveripakkam Feeder Breaker i)For fixing of O/L & E/L Relay in 110KV and its CTs , for fixing of O/L & E/L Relay in 1169 Chennai 110 KV THIRUVALAM 230 KV Kaveripakkam Feeder and monthly maintenance be in service and cater the SS Loads. iii)The 110KV Kaveripakkam Feeder will be in Possible Sun, 23-Apr-2017 09:00 Sun, 23-Apr-2017 17:00 1 0 Approved 110KV Kaveripakkam Feeder and monthly work maintenance work Link-I # and 230KV Mosur feeders will be in service and cater the SS Loads. Hence there will be no interruption of supply please.

GENERATI subject to the grid 1170 Erode NG KUNDAH PH1 UNIT NO : 3 FOR MONTHLY MAINTENANCE WORK.. DURING THE LC PERIOD UNIT NO 3 WILL BE UNDER NOT S/B CONDITION.. possible Sun, 23-Apr-2017 8:00 Sun, 23-Apr-2017 17:00 1 Approved condition existing STATIONS BASIN Possible with 230 KV Tondiarpet # will not be in service, 230 KV Mylapore #, all 110 KV #s, Auto 1,2,3 Subject to Grid 1171 Chennai 230 KV BRIDGE(GMRVASAVI) 230 KV Tondiarpet # Rutine maintenace work CBD Sun, 23-Apr-2017 06:00 Sun, 23-Apr-2017 09:00 1 Approved will be in service . The load may be restricted to 70 MW. condition 230 KV concurrence DURING THE PERIOD OF SHUTDOWN 1) 230KV BHAVINI-I&II #'s,100MVA AUTO 230 KV Eastern Bus & 230 KV Bhavini-I & II TRANSFORMER-I & 230KV EASTERN BUS will not be in service . 2) 110KV Bus coupler Possible OCC 1172 Chennai 230 KV SIRUSERI 230 KV Monthly maintenance work Sun, 23-Apr-2017 10:00 Sun, 23-Apr-2017 17:00 1 0 Approved # (129th OCC approved) breaker will be in closed condition. 3) 110KV Sholinganallur SS load will be transferred to Appd 129/166 230KV KITS PARK SS.

110 KV Kits park feeder load ( 110 KV Madampakkam SS ) To be transferred to 230 KV 1173 Chennai 110 KV VEERAPURAM 230 KV 110 KV Kits park Feeder Quarterly Maintenance Possible Sun, 23-Apr-2017 10:00 Sun, 23-Apr-2017 14:00 1 0 Approved SS Kits park

1174 Chennai 230 KV SPKoil 230 KV Kalapakkam feeder 2 Quartely Maintenance Work Pending Mon, 24-Apr-2017 09:00 Mon, 24-Apr-2017 17:00 1 Approved

No supply to all 110 KV SS fed off through 110 KV Thirupporur feeder and M/S.Orchid 1175 Chennai 110 KV VEERAPURAM 230 KV 110KV Thirupporur # Quarterly Maintenance and Annual Relay Test To be discuss Mon, 24-Apr-2017 10:00 Mon, 24-Apr-2017 14:00 1 0 Approved chemicals. Concurrence to be obtained from SE/CEDC/Chengalpattu

subject to the 110KV Gobi feeder Breaker,CTs and Line feeder being kept 1176 Erode 110 KV THINGALUR 230 KV Monthly Maintenance Works 110KV Getticheviyur SS will be fed from Gobi 230KV SS possible Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 Approved Isolators radial from gobi ss end subject to 110KV Thalavaipettai feeder feeder breaker During the LC period 110KV Thalavaipettai SS will be fed through 110KV 110KV Anthiyur thalavaipettai ss 1177 Erode 110 KV ANTHIYUR 230 KV For monthly maintenance of Breaker and CT possible Mon, 24-Apr-2017 0:00 Mon, 24-Apr-2017 0:00 1 Approved and CT only. feeder. being fed by 110 kv anthiyur feeder

DURING THE LC PERIOD 110KV ANTHIYUR GOBI FEEDER WILL BE RADIAL FROM subject to t n 110 KV GOBI FEEDER BREAKER CT AND 1178 Erode 110 KV ANTHIYUR 230 KV MONTHLY MAINTENANCE WORK OTHER END UP TO T.N PALAYAM SS EXCLUSIVE.110/11KV T.N.PALAYAM SS WILL possible Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 15:00 1 palayam ss Approved LINE SWITCH AVAIL TOTAL SHUT DOWN AS ALREADY APPROVED. NO SS WILL BE AFFECTED. availing tsd

Feeder Breaker with CT and Line side AB Switch for During the LC period both end Breaker Hand Trip & Line side AB Switch kept open 1179 Madurai 110 KV PERIYAR 110 KV PERIYAR - SURULIYAR FEEDER POSSIBLE Mon, 24-Apr-2017 10:00 Mon, 24-Apr-2017 14:00 1 0 Approved Annual Maintenance work. condition. NO SS will be effected.

During LC period,i) AEE/M/OT Patti availing LC for monthly maintenance work.ii) 110KV On 110KV O.T.patti-Kayathar # section For Replacement of defective disc at loc no: 91-92 & sub to PPM pwd 1180 Madurai 110 KV KODIKURICHY 230 KV OTPatti - Kayathar # radial from other end upto Serthapanallur SS.iii) Hence no SS will POSSIBLE Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 Approved between O.T.patti SS - Setharpanallur SS retringing of Earth wire at Loc No:83-85 demand be affected. 110 KV T.N PALAYAM SS MAY AVAIL TOTAL SHUTDOWN,110 KV GOBI FEEDER IN FOR ANNUAL RELAY TESTING WORK BT subject to the load 110 KV BUS COUPLER BREAKER AND 110 KV EASTER BUS WILL TIED WITH 110 KV ANTHIYUR FEEDER IN 110 KV 1181 Erode 110 KV GOBI 230 KV P&C/GOBI AND FOR MONTHLY MAINTENANCE possible Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 condition and the Approved CT'S WESTERN BUS BY CLOSING SERIES SWITCH AT 110 KV GOBI SS AND SUBJECT WORK division of loads TO THE LOAD CONDITION . During the L.C Period, 110KV Sivagiri and 110KV Ellumathur SS are proposed total 110 KV Pugalur - Elumathur feeder Breaker, sub to concurance 1182 Madurai 110 KV PUGALUR 230 KV Monthly maintenance works. shutdown and the remaining 110KV Kodumudi SS,110KV New Nadupalayam SS load fed POSSIBLE Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 Approved CTs and line switch only from Erode from 110KV Erode SS through 110KV Elumathur SS. subject to the feeder being kept 110 KV Salem II # - Its CT, BREAKER, BUS radial from salem 1183 Erode 110 KV Salem 400 KV Monthly Maintenance Work Hasthampatty SS will be fed from Salem 230 KV SS possible Mon, 24-Apr-2017 8:00 Mon, 24-Apr-2017 14:00 1 Approved & LINE SWITCHES ss end and the other feeder loading limit

During the LC period 110KV Penna - Valuthur feeder will be in service . Hence, there is Sub to laod 1184 Madurai 110 KV VALUTHUR 230 KV 110KV Penna - Kavanoor feeder. Tree cutting work. POSSIBLE Mon, 24-Apr-2017 10:00 Mon, 24-Apr-2017 17:00 1 Approved 'no' interruption in power evacuation. condition During the L.C period all other 230KV #'rs will be tied with Grid. Hence there will be 1185 Madurai 230 KV KARAIKUDI 230 KV On 230KV KKDI-VLDR #'r Entire. For Tower to Tower inspection work. POSSIBLE Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 0 Approved Interruption of Supply.

MONTHLY MAINTENANCE WORKS AND LINE Sub to load 1186 Madurai 110 KV KAVANOOR 230 KV 110 KV KAVANOOR-PIONEER (PENNA) PENNA-VALUTHUR TO BE IN SERVICE POSSIBLE Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 Approved MAINTENANCE WORKS condition

110 KV SURULIYAR - PERIYAR breaker with During the above period, no SS will be affected since there is no intermediate SS. Also 1187 Madurai 110 KV SURULIYAR For attending monthly maintenance work. POSSIBLE Mon, 24-Apr-2017 10:00 Mon, 24-Apr-2017 14:00 1 0 Approved CT and line side switch during the above period, LC will be availed at the other end.

During the LC period 110KV Kodavasal SS will be fed from 230KV Thiruvarur SS. The 110KV Thiruvarur - Kovilvenni feeder (Line 110KV Kovilvenni SS & 110KV Vaduvoor SS will be fed from 110KV TVR-TNJ feeder by Sub to load 1188 Madurai 110 KV THIRUVARUR 230 KV portion between 110KV Kodavasal SS to Line premonsoon Inspection and Rectification works. POSSIBLE Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 Approved closing back feeding switch no.1 at Kovilvenni SS. 110KV Thiruvarur - Thanjavur feeder condition 110KV Kovilvenni SS) supply extended upto 110KV Poondi SS radially from Thanjavur Grid SS subject to the OTHAKKAL MANDABAM 110 KV OKM-Irugur # section between During the LC period, 110KV Podanur SS will be fed from 230KV OKM SS and 110KV feeder being kept 1189 Erode 110 KV For P.M.I works by lines/TDLR wing. possible Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 14:00 1 Approved 230 KV 110KV Podanur SS and 110KV Irugur SS. Irugur SS will be fed from 230KV CBE SS. Hence, No SS will be affected. radial from either end DURING THE ABOVE SHUTDOWN PERIOD M/S SASL CO- GENARATION WILL BE EVACUATED THROUGH THE 110 KV PENNADAM # BY CLOSING THE BUSCOUPLER 110 KV VIRUTHACHALAM FEEDER 1190 Madurai 110 KV EACHANGADU 230 KV For MONTHLY MAINTENANCE WORK SWITCH NO 44 AT 110 KV PENNADAM SS AND THERE WILL BE NO INTERRUPTION POSSIBLE Mon, 24-Apr-2017 10:00 Mon, 24-Apr-2017 14:00 1 0 Approved BREAKER,CT's TO EHT CONSUMER. Vridhachalam 110KV SS is alredy in Deviyakurichi - Neyveli 110KV feeder.

subject to transfer OTHAKKAL MANDABAM 110 KV OKM-R.S.Puram II Feeder (Breaker, During the LC period, 110KV OKM-R.S.Puram II feeder loads will be transferred to 110KV 1191 Erode 110 KV for monthly maintenance works. possible Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 14:00 1 of loads to feeder Approved 230 KV CT's & Line Switch) OKM-R.S.Puram I feeder. Hence, No SS will be affected. 1

110KV LTPCL- Vaitheeswarankoil feeder 1)Line inspection and rectification work No interruption to any SS. 110KV Manalmedu SS supply fed from 110KV Kadalangudy- 1192 Madurai 110 KV KADALANGUDI 230 KV POSSIBLE Mon, 24-Apr-2017 8:00 Mon, 24-Apr-2017 17:00 1 0 Approved portion between LTPCL- Manalmedu SS. 2)Maintenance of CT's and isolators at Plant end. V.Koil- Manalmedu feeder. LTPCL plant will be in shutdown condition.

110Kv Kayathar-O.T.Patti Feeder Sec b/w During the LC period,Seethaparpanallur SS will be radially fed from Kythr Hence no SS 1193 Madurai 110 KV KAYATHAR 230 KV For defective disc replacement at various location POSSIBLE Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 0 Approved seethaparpanallur & o.t.Patti affected.

subject to the load 1194 Erode 230 KV DEVIAKURICHI 230 KV For Monthly Maintenance work 230 KV STCMS & Pudanchandai Feeders will be in service. possible Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 Approved Breaker, CTs and Line side isolator both end. condition existing

DURING THE L.C PERIOD,1. T.GODE 110KV FEEDER TIE WILL BE KEPT OPENED to be rescheduled 1.110KV UNJANAI - T.GODE FEEDER Subject to CONTROL AND REALY PANELS REPLACING AT UNJANAI END.2. T.GODE 110KVSS LOADS WILL BE RADIALLY FED FROM BKB-II with 1195 Erode 110 KV UNJANAI 230 KV BREAKER, CT'S AND LINESIDE ISOLATOR postponed Mon, 24-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 4 EE/SLDC/Erode WITH UPGRADED C & R PANELS. END. IF NECESSARY UNJANAI - SANKARI 110KV FEEDER ISOLATOR AT T.GODE thiruchengode ss ONLY. approval END WILL BE CLOSED. tsd on 18.04.2017

1196 Chennai 110 KV KORATTUR 230 KV 110 KV Gumidipoondi-Periyapalayam feeder Jumper Tightness at various location 110 KV Periyapalyam SS will be fed from 400 KV ALamath SS Possible Mon, 24-Apr-2017 09:00 Mon, 24-Apr-2017 18:00 1 0 Approved

subject to poolavadi ss tsd 110 KV POOLAVADY FEEDER BREAKER 1)POOLAVADY SS WILL BE ON TOTAL SHUTDOWN 2)THUNGAVI SS LOADS WILL and the feeder 1197 Erode 110 KV UDUMALPET 230 KV AND LINE ENTIRE SEC BETWEEN FOR MONTHLY MAINTENANCE WORKS possible Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 Approved BE FED FROM PONNAPURAM 230KV SS being kept radial UDUMALPET & THUNGAVI from ponnapuram ss During the above Shutdown Period, 1) 110 KV Musiri # will be fed thro'110 KV perambalur 2 # of 110KV KKDY SS by closing ABS.2 &3 at 110 KV Thathaingarpet SS and by closing Musiri Breaker at 110 KV T.Pet SS. (Note: already in 110 KV Thuraiyur SS 1198 Madurai 110 KV SAMAYAPURAM 230 KV 110 KV MUSIRI # Breaker & CTs only Monthly Maintenance Work & GRT test ABS 1&6 are in closed condition) 2) 110 KV Musiri # Breaker at 230 KV SMPM SS will be POSSIBLE Mon, 24-Apr-2017 10:00 Mon, 24-Apr-2017 17:00 1 0 Approved in H/T condition. 3) 110KV Vengaimandalam SS is also availing total shutdown on that same day. 4)Informed & necessary concurence obtained from Welpsun Solar Plant & EHT consumer (Arise) 5)There is no interruption to any other 110 KV SS a ) 110 KV SRP-KKY # line section between a) Tower to Tower Inspection and Checking During the LC period Kannanallur SS will avail back feeding supply from 110 KV 1199 Madurai 110 KV SRPUDUR 230 KV SRP and Kannanallur. B)110 KV SRP-KKY # POSSIBLE Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 14:00 1 Sub to wind gen Approved healthness of Jumper . B.Annual relay testing work Muppandal #. Hence no SS will be affected Br CT & Line switch.

230/33KV PowerTransformer-II,HV&LV During the LC Period PowerTransformer-II willnot beinservice. PowerTransformer-I&III 1200 Madurai 230 KV SANKANERI 230 KV For monthly maintenance purpose. POSSIBLE Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 14:00 1 Sub to wind gen Approved Breakers. will be carriedout the EntireLoad.

1)During the LC Period 110 KV Arasur- Kaniyur feeder load transfer to 110 KV Arasur- subject to transfer For Monthly maintenance work and Annual relay 1201 Erode 110 KV ARASUR 230 KV Palladam feeder (By closing Bus Coupler switch at Kaniyur SS).2) During the LC Period possible Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 12:00 1 of loads to Approved and Its CTs. testing works by P & C wing /Thudialur 110 KV Kalivelampatty load transfer to 230 KV Palladam SS palladam feeder

subject to the 1202 Erode 230 KV INGUR 230 KV MONTHLY MAINTENANCE WORKS DEPENDING UPON LOAD CONDITION possible Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 14:00 1 Approved division of loads

Monthly maintenance of 110KV Melakallor# SF6 1203 Madurai 110 KV KODAIYAR PH2 110KV Melalallor feeder SF6 breaker Feeder will be radial from other end. Hence no SS will be affected. POSSIBLE Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 0 Approved breaker

Subject to GUMMIDIPOONDI 230 Monthly Maintenance work, CT clamp and bolt nuts Concurance to be obtained from M/s. TCPL During the period of LC TCPL I loads fed 1204 Chennai 110 KV 110KV TCPL I feeder Possible Mon, 24-Apr-2017 09:00 Mon, 24-Apr-2017 17:00 1 concurrence from Approved KV replacement work through TCPL II feeder M/s. TCPL

110 KV Kayathar - Anupankulam # breaker 1205 Madurai 110 KV KAYATHAR 230 KV For Monthly Maintenance work During the LC period other end also avails LC. Hence, No ss affected POSSIBLE Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 0 Approved with CT Only

1)230KV Deviakurichi - singapuram Feeder breaker & CT's maintenance work availing 230KV Deviakurichi-Singapuram Entire subject to the load 1206 Erode 230 KV SALEM AUTO 230 KV Road & Railway crossing jumpers checking. Both SS. 3)230KV Deviakurichi-Singapuram Feeder series switch Both SS will be Kept possible Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 Approved Feeder. condition existing Opened.3)There will be no interruption of supply to any SS. 110KV T(K)GTPS - THIRUVARUR FEEDER (VIA: 110KV ULLIKKOTTAI SS, 110KV 1) DURING THE LC PERIOD, 110KV ULLIKKOTTAI SS, 110KV OKKANADU OKKANADU KEELAIYUR SS & 110KV FOR PREMONSOON INSPECTION BY AE/LINES/ Sub to load 1207 Madurai 110 KV THIRUVARUR 230 KV KEELAIYUR SS AND 110KV MANNARGUDI SS RADIALLY FED FROM 230KV POSSIBLE Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 Approved MANNARGUDI SS), LINE PORTION PATTUKKOTTAI. condition THIRUVARUR SS. 2) NO INTERRUPTION TO ANY SUBSTATIONS. BETWEEN T(K)GTPS TO 110KV ULLIKKOTTAI SS.

other two feeders 1208 Erode 110 KV METTUR AUTO 230 KV 110KV Malco III Feeder For Monthly Maintenance work During the LC period 110KV Malco I & II Feeder will be in service possible Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 Approved will be in service

GENERATI other units wil be 1209 Erode NG PYKARA UNIT 7 FOR MONTHLY MAINTENANCE WORK NIL possible Mon, 24-Apr-2017 8:00 Mon, 24-Apr-2017 17:00 1 Approved in service STATIONS

For replacement of flashed over insulators at loc no. Already approved During the period of LCThe 110 KV Pennadam SS will be availing Total shutdown.Hence 1210 Chennai 110 KV CUDDALORE 230 KV Section between SASL Co Gen to pennadam 76, 94 and for checking jumper tightness at railway To be discuss Mon, 24-Apr-2017 09:00 Mon, 24-Apr-2017 17:00 1 on 22nd April Approved NO Interruption of SupplyConcurrence obtained from SE/O/Villupuram SS crossing location. Loc.Nos.3 - 4. 2017

llong lc for 21 days to be 230/110KV AUTO TRANSFORMER-I WITH OLTC Overhauling and y-phase Ttransformer oil scheduled with 1211 Erode 230 KV ALIYAR 230 KV During the LC period 230/110kv Auto Transfomer-II will caters the load possible Mon, 24-Apr-2017 10:00 Wed, 26-Apr-2017 16:00 3 Approved HV AND LV CB,CTs leakage aresting&Overhauling work note approval and to be approved by se ld go chennai

230 KV Deviyakurichi subject to the load 1212 Erode 230 KV SINGAPURAM 230 KV Monthly Maintenance 1.Monthly Maintenance at both ends. possible Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 Approved Feeder(CT,Breaker&Isolator) condition existing

230KV KPH2 to KPH3 Feeder Tower No:25 to 35. subject to the load 1213 Erode 230 KV KUNDAH PH3 230KV KPH2 to KPH3 Feeder Pre monsoon inspection work and maintenance Bus and line both end open condition earth switch closed condition. possible Mon, 24-Apr-2017 9:00 Mon, 24-Apr-2017 17:00 1 Approved condition existing work.

Due 110KKDI- ALKL# is radial During the Lc Period 3x50MVA Auto.Tr's will not be out of Service. To Manage 110KV from both ends for Bus by itself, 110KV Alakarkoil #'r will be radial from 230KV Alkarkoil SS End. NOT 1214 Madurai 230 KV KARAIKUDI 230 KV On 230KV GC Bkr, its CT's O/G isolator. For Monthly Mtc Work. Tue, 25-Apr-2017 10:00 Tue, 25-Apr-2017 13:00 1 110PSQ- Approved Singampunari, S.Pudur & Narasingampatty under TSD. Hence there will no interruption of POSSIBLE ALKL#1&Sahtisug Supply. ars# LC upto 15.4.17 Replacement of flashed over insulators at loc. No Durind the period of LC 230 KV Perambalur SS will be fed from 230 KV Trichy SSHence 1215 Chennai 230 KV CUDDALORE 230 KV 230 KV Taqa-Perambalur 76,92,153,171 and for checking jumper tightness at Possible Tue, 25-Apr-2017 09:00 Tue, 25-Apr-2017 17:00 1 0 Approved NO Interruption of SupplyConcurrence obtained from SE/O/Villupuram railway crossing locations. Loc.Nos. 82-83 & 30-31

1216 Chennai 110 KV SPKoil lines 110 KV Chengapattu feeder Quertaly maintenance work Possible Tue, 25-Apr-2017 10:00 Tue, 25-Apr-2017 17:00 1 approved Approved

CHECKANURANI SW 230KV CKNI-Renganathapuram Feeder For Monthly Maintenance work and Line Due to 230Pugalur- 1217 Madurai 230 KV During LC Period, there will be no supply in the entire feeder POSISBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 Approved STATION 230 KV Entire Maintenance Work Parmathi # 2 LC

Power transformer -IV HVBR -IV LVBR -IV During the lc period there will be no supply in entire Power transformer -IV &33kv feeders 1218 Madurai 230 KV VEERANAM 230 KV Quarterly & Monthly maintenance work POSSIBLE Tue, 25-Apr-2017 10:00 Tue, 25-Apr-2017 17:00 1 Sub to wind gen Approved 33Kvfeeders of Micon-7,Vestas-1,Vestas-2 and concurrence obtained from SE/NCES/TIN.

400/230 KV ICT#4 & 5 HV Tie breaker 8(1)52 For CT Tan delta testing and isolator allignment 400/230 KV ICT#4 & 5 will be in service via HV main circuit breakers.Hence No Possible OCC 1219 Chennai 400 KV Alamathy 400 KV Tue, 25-Apr-2017 10:00 Tue, 25-Apr-2017 17:00 1 0 Approved only work. interuption. Appd. 129/206

During the lc period: 1Auto I, II & III will be out of service.2110 KV Kadayanllur SS and 110 KV Achanpudhur SS will be radially fed from 230KV Nalamanaickampatti SS.3110 KV Kodikurichi- Tenkasi- Papanasam # Will be radial from other end. 110 KV Kodikurichih WF SS load will be transferred through this #.4110kv Keelapavoor SS,110kv On 110KV Bus Section I & II (Entire Bus 1For Monthly Maintenance work and 2between 110 Alangulam SS will be Radillay fed from 110kv kayathar SS .5110 KV Echantha SS load Sub to wind gen Approved Subject to 1220 Madurai 110 KV KODIKURICHY 230 KV Section)with Auto LV I, II & III Breakers, CT's KV Bus isolatror to 110 KV Kayathar #main Bus POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 will be transferred through 110 KV veerasigamani II to Nalamanaickanpatty # by closing and load condition Wind Generation and All Isolators. Conducter R and B Phase replacement work AB Switch towards veerasigamani at Echantha SS.6110 KV Kodikurichi- Veerasigamani II # will Be tied with 110kv Nalamanaickanpatty # by closiing of AB Switch at Nalamanaickanpatty SS towards 230 kvNalamanaickanpatty SS7Hence No SS will affected.

On 230/110KV Kayathar - Auto Transformer-I During the LC period, Auto Transformer-II & Auto Transformer-III will cater all the loads of sub to load 1221 Madurai 230 KV KAYATHAR 230 KV For Monthly Maintenance Work POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 12:00 1 Approved HV-I & LV-I breaker with CT only. Auto Tranformer-I Hence no SS affected condition

230KV Amuthapuram- Checkanoorani feeder - For rectification of Arching Horn at Location No:353 During LC Period, 1.AE/Maintenance/Amuthapuram& Chekkaroorani aviling monthly 1222 Madurai 230 KV KODIKURICHY 230 KV POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 Sub to wind gen Approved I I (Y Phase) shutdown

230KV Amuthapuram-checkanoorani Feeder 1) During the LC period there will be NO supply in this feeder. 2) Other end also avail LC 1223 Madurai 230 KV AMUTHAPURAM 230 KV Monthly Maintenance Work POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 Sub to wind gen Approved with Breakers,CTs and its isolators on same day. 3) Concurrence obtained from SE/NCES/TIN.

subject to the 110 KV KUGALUR SS MAY AVAIL TOTAL SHUTDOWN,SUPPLY TO 110 KV TN 110 KV ANTHITUR FEEDER BREAKER AND feeder being kept 1224 Erode 110 KV GOBI 230 KV FOR MONTHLY MAINTENANCE WORK PALAYAM SS MAY FED FROM 230 KV ANTHIYUR SS,NO OTHER SS WILL possible Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 Approved CT'S WITH LINE SWITCH radial from AFFECTED anthiyur ss end

110 KV TNPL feeder breaker, CT & Line Monthly Maintenance work ,Annual Relay test by During the LC period, there will be no supply on the above feeder. Concurrence to be 1225 Madurai 110 KV PUGALUR 230 KV POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 0 Approved switch only P&C wing,Erode. obtained from EHT consumer M/s TNPL Ltd.

CHECKANURANI SW For Monthly Maintenance work and Line 1226 Madurai 230 KV 230KV CKNI-Amuthapuram Feeder Entire During LC Period there will be no supply in the entire feeder POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 0 Approved STATION 230 KV Maintenance Work subject to the 230 KV Link I # - Its CTs, BREAKER, BUS & 1227 Erode 230 KV Salem 400 KV Both end Monthly Maintenance Work Both end Monthly Maintenance Work possible Tue, 25-Apr-2017 8:00 Tue, 25-Apr-2017 14:00 1 other feeder Approved LINE SWITCHES loading limit

No interruption to any SS. 110KV Palaiyur SS supply fed from 110KV Kadalangudy- sub to load 1228 Madurai 110 KV KADALANGUDI 230 KV 110KV Palaiyur- KGTPS feeder entire Line inspection and rectification work. POSSIBLE Tue, 25-Apr-2017 10:00 Tue, 25-Apr-2017 16:00 1 Approved Aduthurai- Palaiyur feeder. All other feeders will be in tied condition at KGTPS plant. condition

During LC period230KV Bus-B idly charged through Bus Coupler CB & CTs will be hand tripped for 30 minutes for Tan Delta testing of MEHRU PTs.230KV Deviakurichy feeder 230KV Bus-B MEHRU Makr PTs-3 will be kept radially charged from Dvk end for 30 minutes for Tan Delta testing of SCT the lc will be Nos.230KV Deviakurichy feeder SCT make make CTs.110KV Namagiripet SS will be transferred to 110KV DVK-Thammampatty issued one by one CTs-3 Nos.110KV Namakkal, Rasipuram, For Tan Delta Testing of 110KV LAMCO make, feeder.110KV Pudhansandai SS will be back fed through 110KV PSI-Rasipuram feeder subject to the load PUDHANCHANTHAI 230 Pudhansandai, Namagiripet, KN Patty, 230KV & 110KV SCT make CTs. and 230KV for 30 minutes.110KV KN Patty SS will be back fed through 110KV PSI-Rasipuram feeder 1229 Erode 230 KV possible Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 condition existing Approved KV Valayapatty #s LAMCO make CTs-18 MEHRU make PTs.Wherein the last Tan Delta test for 30 minutes and then,110KV Rasipuram SS will be transferred to 110KV Salem-Malllur and subject to Nos.110KV LV-I and LV-II LAMCO make CTs- Values were noticed in rising trend. feeder.110KV Namakkal and Valayapatty feeder loads will be fed vice-versa for Tan Delta transfer of loads 6 Nos.110KV Bus Coupler LAMCO make CTs- testing of LAMCO make CTs in both these feeder.110KV East and West Buses fed by only 3 Nos. Auto-II & I, will be separated for 30 minutes for LAMCO Bus Coupler CTs Tan Delta testing.110KV LV-I and LV-II LAMCO make CTs will be tested for TAN Delta values one after other for 30 minutes.No supply interruption.

During the LC period the Auto Tr. 2 & 3 out of service, 230KV sempatty radial from other Monthly Br,ct maintenance,Line monthly end, 230KV MZR # both end LC, Auto Tr. I in service ( expected load relief 108 Mw ) Total App in 230KV TNI-MZR # Breaker ,CT,entire line maintenance,premonsoon inspection and 1230 Madurai 230 KV then I 230 KV shut down to be proposed in the following 110KV SS for load relief of 108 MW ( Theni, POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 129occ/172Sub to Approved with 230KV Bus LC in Northern Bus only replacement of defective CVT in 230 KV northern Nilakottai, Eluvanampatty , Madurapuri , Kadamalai Kundu, Cumbum, UPM, Bodi, load and toal s/d bus C.O.Puram,MGKottai, KPM SS) 110 KV KGTPS-PALAIYUR FEEDER ANNUAL 110 KV KGTPS-PALAIYUR FEEDER RELAY TESTING WORKS BY 1231 Madurai 110 KV KUTTALAM BREAKER WITH ENTIRE LINE AT BOTH AEE/P&C/THIRUVARUR AT BOTH END.BREAKER During the LC period there is no interruption of supply to any ss. POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 0 Approved END. TESTING WORKS AND OTHER MAINTENANCE WORKS IN ISOALTORS AT KGTPS END.

230/110 KV AUTO TRANSFORMER 2 - 80 AUTO TR. 2 WILL NOT BE IN SERVICE. LOADS TO BE CATERED BY THE OTHER 1232 Madurai 230 KV KAVANOOR 230 KV MONTHLY MAINTENANCE WORKS POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 0 Approved MVA, HV BR., LV BR. AUTO TR.

subject to transfer THE 110 KV METTUR TOWN SS AND 33 KV KOLTAHUR SS LOADS WILL BE of mettur ss loads 110 KV METTUR TOWN SS FEEDER 1233 Erode 110 KV METTUR DPH MONTHLY MAINTENANCE WORKS. CHANGED TO 110 KV METTUR-ANTHIYUR FEEDER FOR THE ABOVE LINE CLEAR possible Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 15:00 1 and kolathur ss Approved ENTIRE. PERIOD. loads to anthiyur feeder

During the LC period, a) other end also availing LC on the same feeder. b) all other a) For monthly maintenance works. b) Pre monsoon 1234 Madurai 230 KV TRICHY 230 KV 230KV feeders will be in tied condition. c) there will be no interruption of supply to any of POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 16:00 1 0 Approved Breaker,CTs , Line Isolator and line entire. inspection the feeders and SS.

Line Premansoon inspection and rectification work, During the LC period all other 230Kv feeders are in tied. Hence there will be no sub to 230 KDGDI- 1235 Madurai 230 KV THIRUVARUR 230 KV 230KV Thiruvarur - Thanajvur Feeder POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 Approved Breaker, CT's and Isolator maintenance work interruption of supply to any other substation. NEY # loading

subject to the OTHAKKAL MANDABAM 110 KV OKM-Thudiyalur II Feeder (Breaker, During the LC period, 110 KV OKM-Thudiyalur II Feeder loads will be transferred to 230 feeder being kept 1236 Erode 110 KV for monthly maintenance works. possible Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 14:00 1 Approved 230 KV CT's & Line switch) KV TDLR SS. Hence, No SS will be affected. radial from thudiyalur ss end

1)Line inspection and rectification work No interruption to any SS. All other feeders will be in tied condition. LTPCL plant will be in Subject to Load 1237 Madurai 110 KV KADALANGUDI 230 KV 110KV Kadalangudy- LTCPL feeder entire 2)Maintenance work 3)Maintenance of CT's and POSSIBLE Tue, 25-Apr-2017 8:00 Tue, 25-Apr-2017 17:00 1 0 shutdown condition. condition isolators at Plant end.

110KV Kayathar-Arumuganeri Feeder sec During the LC period,I.PalayamKottai SS will be radially fed from 1238 Madurai 110 KV KAYATHAR 230 KV For Defective Disc replacement at Various locations POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 0 Approved b/w Palayamkottai&Srimoolagarai. Kayathar.II.Srimoolakarai SS will be radially fed from arumuganeri Hence No SS affected

During the LC period Thalaiyuthu SS is availing total shutdown. Feeder will be radial from Sub to wind gen 110KV SBT- Udumalpet # sec bet 1239 Madurai 110 KV SEMBATTY 230 KV Tree cutting work SBT upto Pappampatti and radial from other end upto M.N.Patti. Hence no interruption to POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 and concurrance Approved Pappampatti and M.N.Patti SS any SS. from UDPT

110 KV Gumidipoondi-Periyappalayam Already approved 1240 Chennai 110 KV KORATTUR 230 KV Jumper Tightness at various location 110 KV Periyapalyam SS will be fed from 400 KV Alamathy SS To be discuss Tue, 25-Apr-2017 08:00 Tue, 25-Apr-2017 16:00 1 Repeat feeder on 24th April 2017

subject to the AUTO TRANSFORMER I,HV I & LV I 1241 Erode 230 KV UDUMALPET 230 KV FOR MONTHLY MAINTENANCE WORKS 3 AUTOS ARE IN PARALLEL . LOADS ARE SHARED WITH OTHER TWO AUTOS. possible Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 other auto trs Approved COMPLETE loading limit 1.100 MVA 100 MVA AUTOTRANSFORMER -II WILL BE SEVICE CONDITION2.110KV ACK- VILLUPRAM I & II FEEDER WILL BE RADILLY CHARGED FROM OTHER 230/110KV, 100 MVA AUTOTRANSFORMER 1242 Chennai 230 KV ACHRAPAKKAM 230 KV TO CARRYOUT MONTHLY MAINTENANCE WORK END.3.110KV ACK- SP KOIL I & II FEEDER WILL BE RADILLY CHARGED FROM Possible Tue, 25-Apr-2017 09:00 Tue, 25-Apr-2017 16:00 1 0 Approved -I WITH HV AND LV BREAKERS AND CT'S OTHER END.4.110KV ACK- VANDAVASI FEEDER WILL BE RADILLY CHARGED FROM OTHER END.

SADAYAMPALAYAM 230 230 KV Sadayapalayam-Ponnapuram # subject to the load 1243 Erode 230 KV Annual relay testing work by P&C Palladam. 230 KV Sadayapalayam-Palladam # in service. possible Tue, 25-Apr-2017 10:00 Tue, 25-Apr-2017 17:00 1 Approved KV breaker,CT's & Isolators. condition existing

1) During the period of shutdown of 110KV KWW I feeder, loads of KWW I feeder will be Possible with 110KV Kilpauk Water works feeder I & II one Tan Delta Test by GRT wing & Routine Maintenance 1244 Chennai 110 KV KILPAUK 230 KV transferred to KWW II feeder2) During the period of shutdown of 110KV KWW II feeder, CBD Tue, 25-Apr-2017 09:00 Tue, 25-Apr-2017 16:00 1 0 Approved by one work loads of KWW II feeder will be transferred to KWW I feeder concurrence

1. During the shutdown period 230 KV SMPM SS will be radially fed from 230 KV SS 230KV SMPM-TRICHY # Breaker & CT's , Monthly Maintenance work, line Patrol work by 1245 Madurai 230 KV SAMAYAPURAM 230 KV Eachangadu. 2.The other end 230 KV SS Trichy also availing LC on the same date & POSSIBLE Tue, 25-Apr-2017 10:00 Tue, 25-Apr-2017 17:00 1 0 Approved Line isolators and entire line portion. AE/Lines/kallakudy. time. 3.No interruption to any other 110 KV SS. On 110 KV SR Puthur - Palavoor feeder a.Tower to tower inspection, Checking of During the LC period 110/11 KV Palavoor SS will avail Total shut down. Hence no ss will 1246 Madurai 110 KV SRPUDUR 230 KV POSSIBLE Tue, 25-Apr-2017 10:00 Tue, 25-Apr-2017 14:00 1 Sub to wind gen Approved entire healthyness of Jumper b. Annual relay testing work be affected.

230/110KV AutoTransformer-II,HV&LV For monthly maintenance & GRT Annual Relay During the LC Period Auto Transformer-II willnot beinservice. AutoTransformer-I will be 1247 Madurai 230 KV SANKANERI 230 KV POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 14:00 1 Sub to wind gen Approved Breakers. Testing purpose. carriedout the EntireLoad.

During the LC Period 110KV Vijayapathy SS supply Radially fed from SRPuthoor- 110KV Sankaner- koodankulam feeder For monthly maintenance & GRT Annual Relay 1248 Madurai 110 KV SANKANERI 230 KV Arumuganeri feeder-II, By Closing Buscoupler-II at 110KV Koodankulam SS.Hence no SS 0 Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 14:00 1 wrong entry Approved Breaker CTs & Lineswitches. Testing purpose. will be affected.

230KV Alundur - Paramathy Feeder Breaker, a)Monthly Preventive Maintenance work. b)Relay During the LC period, a)Alundur End Only LC work. b)All other 230 KV feeders will be in 1249 Madurai 230 KV ALUNDUR 230 KV CT's, CVT's and Line Isolators.(Alundur End POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 App in occ/168 Approved TestingWork. service. c)There will be no interruption of supply to any other feeders. Only)

110 KV Samalpatty RLY # I, SF6 Bkr, CTs & During the LC period 110KV Samalpatty Railway Traction will be transferred to 110KV feeder 2 will be in 1250 Erode 110 KV Singarapet 110 KV Monthly maintenance work possible Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 15:00 1 Approved Line Isolator. Samalpatty II feeder, hence no interruption of supply service

subject to the 230KV Link Feeders I Breakers, CTs & Line 230KV Link-I feeder LC will be availed at both ends. 3Nos 230KV feeder will be in service 1251 Erode 230 KV SALEM AUTO 230 KV Monthly Maintenance work. possible Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 other feeder Approved Isolators and there will be no interruption to any SS or feeder. loading limit

230KV Sankaraperi 1 feeder main breaker Monthly Maintenance work and Annual Relay test by During the LC period there will be no supply in 230KV Sankaraperi 1 feeder main breaker 1252 Madurai 230 KV kayathar230kv POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 Sub to wind gen Approved (211-52) & CT,CVT AEE/P&C-2/kayathar (211-52) & CT,CVT. hence no substation affected.

GENERATI A) Electrical- Monthly maintenance of Thrust cooler After s/d of Kod 1253 Madurai NG KODAIYAR PH2 Generator machine unit-II cleaningB) Mechanical- Monthly maintenance of P.H-II will be in shut down condition POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 Approved Ph2 STATIONS Governor oil coller cleaning

subject to Carryout Monthly SS Maintenance works by karimangalam ss 1.110KV Karimangalam feeder breaker, 110 KV Karimangalm SS availing Total Shutdown Total Relief : 50 MW, the Station load KARIAMANGALAM 230 maintenance and GRT Relay testing in availing tsd and 1254 Erode 110 KV CTs,Line switch 2. Mettur 230KV feeder will Managed by keeping Auto Transformer I, II & III and 230 KV Shoolagiri Feeder , 1 No possible Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 14:00 1 Approved KV Karimangalam # and Differential Relay Fixing at the shoolagiri breaker and CT`s Grid feeder in service. 230KV Mettur # feeder loading limit after that

For annual relay test by P&C WING / UDT & Monthly subject to the load 1255 Erode 230 KV PONNAPURAM 230 KV 1. 230KV GRID #, HENCE NO SS WILL BE AFFECTED possible Tue, 25-Apr-2017 10:00 Tue, 25-Apr-2017 17:00 1 Approved Breaker, CTs And entire line Maintenance works. condition existing

110 KV Kayathar - OTPatty # Breaker with Sub to ppm pwd 1256 Madurai 110 KV KAYATHAR 230 KV For Monthly Maintenance work During the LC period other end also avails LC. Hence, No ss affected POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 Approved CT only demand

1,Total shutdown has been approved by CE/D/Vellore vide Memo. 25.04.2017---230 KV Vinnamangalam - VINNAMANGALAM 230 No.:CE/D/VLR/EE/AEE/Gl/ F. Shut down/ D. 142 /2017, Dt:21.03.2017 and Possible OCC 1257 Erode 230 KV For attending monthly maintenance works only Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 14:00 1 0 Approved KV SE/D/Tirupatture vide Memo.No:SE/TEDC/TPR/ Gen / AE / F.Shutdown/D.3287/17, Appd. 129/169 isolators dt:21.03.2017. 1) For monthly maintenance works by the 230 KV Thanjavur - Thiruvarur feeder, AEE/Mtce/Thanjavur, 2) For carrying out During the LC period, 1) other end also will avail LC on the same day,2) all other 230 KV sub to 230 KDGDI- 1258 Madurai 230 KV THANJAVUR 230 KV POSISBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 Approved Breaker, CT & Line Isolator. premonsoon inspection works by the feeders will be in tied condition,3) no supply interruption to any SS. NEY # loading AEE/Lines/Thanjavur. 1) 110KV Salem - Singapuram -II feeder breakers kept hand tripped at Salem 230KV SS and Singapuram 230KV SS.2) There will be no supply in 110KV Salem - Singapuram -II subject to 1259 Erode 110 KV SALEM AUTO 230 KV 110KV Salem - Singapuram -II feeder entire. Road crossing jumpers checking. possible Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 Approved feeder entire.3) Mettupatty 110KV SS will be availing total shutdown on that day.4) There mettupatty ss tsd will be no interruption of supply to any SS.

230KV Karamadai-Thudialur feeder breaker, subject to the load 1260 Erode 230 KV karamadai230KV For maintenance works. LC programmed at other end also. possible Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 14:00 1 Approved CTs & CVTs. condition existing

A)110KV NEMMELI THIPPIYAKUDI - 1) During the LC period, 110KV Nemmeli Thippiyakudi-Pattukkottai-I Feeder in service. 2) PATTUKKOTTAI-II FEEDER BREAKER, CT' A) MONTHLY MAINTENANCE WORK BY During the LC period, 110KV KARAMBAIYAM SS WILL AVAIL TOTAL SHUTDOWN3) NEMALITHIPIYAKUDI 1261 Madurai 230 KV s AND LINE ISOLATER.B) 110KV NEMMELI AEE/MTC/ N T KUDI. B) PREMONSOON 110KV Kovilkalappal-Madukkur-Pattukkottai tie will be created (by closing the 110KV Line POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 0 Approved 230 KV THIPPIYAKUDI - PATTUKKOTTAI-II INSPECTION BY AE/LINES/PATTUKKOTTAI. Isolator (switch No.2) at 110KV Madukkur SS) and 110KV Madukkur feeder Breaker hand FEEDER ENTIRE tripped condition at 230/110KV N T Kudi SS.4) No interruption to any Substation.

1262 Madurai 230 KV PERAMBALUR 230 KV 230KV Bus coupler Breaker only For monthly maintenance works. Idle Breaker.There will be no interuptionConsumer POSSIBLE Tue, 25-Apr-2017 10:00 Tue, 25-Apr-2017 12:00 1 0 Approved

1. No supply to M/s Zuari & M/s L&T shipbuilding, 2. 33KV athipattu feeder and 33KV Concurrence from 1263 Chennai 230 KV ATHIPET 230 KV 25MVA Power Transformer Routine maintenance work 0 Tue, 25-Apr-2017 11:00 Tue, 25-Apr-2017 17:00 1 Approved NCTPS feeder will be back fed from Melur 110KVSS SE/O subject to thekkalur ss For monthly maintenance work and for PMI by 110kv Karuvalur - Thekkalur (paduvamplli) 110kv Thekkalur SS total shutdown and 110kv KPR (EHT) fed from 110kv Karuvalur - availing tsd and 1264 Erode 110 KV KARUVALUR 230 KV palladam lines in section between 230kv Karuvalur - possible Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 Approved feeder breaker and it's CTs Arasur II feeder the load transfer 110kv Thekkalur SS to arasur 2 feeder after that subject to the tsd 110 KV Palladam - Tiruppur feeder breaker To carryout Monthly maintenance on equipment's by During LC period 1) 110 KV Mudalipalayam SS and 110 KV Tiruppur SS availing total 1265 Erode 110 KV PALLADAM 230 KV possible Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 15:00 1 relief being Approved and CT's and line side isolator AEE/Maintenance/Palladam shut down2) 110 Kumarnagar SS will be fed through 110 KV Sipcot II feeder realized

During LC period 1) Other 3 Nos Auto transformers will be in service2) 110 KV subject to the Auto transformer II and its HV , LV side To carryout Monthly maintenance on equipment's of 1266 Erode 230 KV PALLADAM 230 KV Mudalipalayam SS and 110 KV Tiruppur SS availing Total shut down3) No other Sub possible Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 other auto trs Approved breaker CT's and LAS Auto transformer II by AEE/Maintenance/Palladam Station will be affected loading limit

THIRUVANNAMALAI 230 230 KV Buscoupler Breaker and Transfer Bus During the period of L/c time 230 KV Transfer Bus will be OFF condition. There is no 1267 Chennai 230 KV Monthly maintenance work Possible Tue, 25-Apr-2017 09:00 Tue, 25-Apr-2017 14:00 1 0 Approved KV CVT interruption of supply to any of the substation please. subject to the 230 kv akrimangalam 1268 Erode 230 KV METTUR AUTO 230 KV 230KV Karimangalam Feeder both end For Monthly Maintenance work During the LC period other 230KV feeders will be in service possible Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 to shoolagiri Approved feeder loading limit

subject to the load 1269 Erode 230 KV THUDIALUR 230 KV 230KV Thudiyalur-Karamadai feeder entire For monthly mtce works 230KV OKM, CBE & PH4 feeders will be in service possible Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 14:00 1 Approved condition existing During the period of LCThe 110 KV Panruti Rural and panruti urban ss load will be For replacement of flash over insulators at (loc no Subject to load 1270 Chennai 110 KV CUDDALORE 230 KV Possible Tue, 25-Apr-2017 09:00 Tue, 25-Apr-2017 17:00 1 Approved 74) B phase condition SupplyConcurrence obtained from SE/O/Villupuram 110 KV Cuddalore - Spic Pharma # breaker, During the period of LCSpic Pharma - Under D.C. from 21.11.2011Hence NO Interruption 1271 Chennai 110 KV CUDDALORE 230 KV For monthly maintenance works Possible Tue, 25-Apr-2017 09:00 Tue, 25-Apr-2017 17:00 1 0 Approved of SupplyConcurrence obtained from SE/O/Villupuram

230 KV Thiruvalam SS to 110 KV Sholinghur SS.ii. The 110KV M.V.Puram SS, 110KV 1272 Chennai 110 KV THIRUVALAM 230 KV For EHT Line Maintenance Works. Possible Tue, 25-Apr-2017 09:00 Tue, 25-Apr-2017 14:00 1 0 Approved entire. Mukundrayapuram SS, 110KV Sholinghur SS(11kv loads), are availing Total Shutdown Hence there will be no interruption of supply please.

1273 Chennai 230 KV THIRUVALAM 230 KV For EHT Line maintenance work. Possible Tue, 25-Apr-2017 09:00 Tue, 25-Apr-2017 14:00 1 0 Approved 230KV Link I, Link II, Chittoor feeders are in service.Hence there will be no interruption of supply please.

During the period of LC i) The 110KV M.V.Puram SS, 110KV Mukundrayapuram SS, 110KV Sholinghur SS, are availing Total Shutdown on 25.04.2017. The Totalshutdown approved and concurrence obtained by Chief Engineer/ Distribution / Vellore ii) Auto-Tr-II Breakers and its Cts. for fixing of Differential i)For fixing of Differential relay in Auto Tr-III by GRT relay by GRT Wing /Thiruvalam and monthly Wing /Thiruvalam and monthly maintenance work 1274 Chennai 230 KV THIRUVALAM 230 KV Possible Tue, 25-Apr-2017 09:00 Tue, 25-Apr-2017 17:00 1 0 Approved maintenance work.ii) On 110KV M.V.Puram ii)For monthly maintenance work in 110KV M.V.Puram feeder and 230KV Mosur Feeder will be in 'OFF' Condition vi)The 230KV Link-II, 230KV Link-I, 230KV Chittoor interstate feeders, and will be in service and cater the SS Loads. Hence there will be no interruption of supply please.

ANUPPANKULAM 230 During the LC period,110KV Padikasuvaithanpatti feeder,Breaker and line will be no 1275 Madurai 110 KV 110KV Padikasuvaithanpatti feeder Br. CT. For monthly maintenance work. POSSIBLE Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 13:00 1 0 Approved KV supply. Hence no SS will be affected. 110KV KPH2 to Thudiyalur Feeder Tower No:01 to Subject to to be scheduled 1276 Erode 110 KV KUNDAH PH3 110KV KPH2 to Thudiyalur Feeder 14. Pre monsoon inspection work and maintenance Bus and line both end open condition earth switch closed condition. postponed Tue, 25-Apr-2017 9:00 Tue, 25-Apr-2017 17:00 1 EE/SLDC/Erode on a sunday work. approval

1277 Chennai 230 KV SPKoil lines 230 KV Spkoil-Kalpakkam feeder 1 Insulator Replacement work Possible Wed, 26-Apr-2017 10:00 Wed, 26-Apr-2017 17:00 1 approved Approved

230/110KV AUTO TRANSFORMER-II,HV-II DURING THE L.C PERIOD 110KV THOTTIAPATTI,110KV PADIKASUVAITHANPATTI NALLAPPANAYAKANPA BREAKER WITH C.T,LV-II BREAKER WITH Due to Kodikurichi 1278 Madurai 230 KV FOR MONTHLY MAINTENANCE WORK. AND 110KV SRIVILLIPUTTUR SS WILL BE AVAILING TOTAL SHUT-DOWN ON THAT POSISBLE Wed, 26-Apr-2017 10:00 Wed, 26-Apr-2017 17:00 1 Approved TTY 230 KV C.T AND 110KV THOTTIAPATTI FEEDER Bus LC DAY.NO SS WILL BE AFFECTED. BREAKER WITH C.T

230 kv ponnapuram to 230 KV MYVADI - ANIKADAVU FEEDER Approved Subject to 1279 Erode 230 KV Udumalpet 400 KV MONTHLY MAINTENANCE WORK BOTH END AVAIL LC postponed Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 sadayapalayam BREAKER, CT AND LINE ENTIRE wind Generation feeder lc recommended

1280 Madurai 230 KV KODIKURICHY 230 KV 230KV Transfer Bus Section For Monthly Maintenance work 0 POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 0 Approved

On 230/110KV Kayathar - Auto Transformer- During the LC period, Auto Transformer-II & Auto Transformer-I will cater all the loads of Sub to wind gen 1281 Madurai 230 KV KAYATHAR 230 KV for Monthly Maintenance work POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 Approved III HV-III & LV-III breaker with CT only. Auto Tranformer-III Hence no SS affected and load condition

to be scheduled after the 230 kv mtps 3 to thingalur 230KV KR THOPPUR feeder Breaker,CTs feeder is back in 1282 Erode 230 KV THINGALUR 230 KV Monthly Maintenance Works Other end also availing LC postponed Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 Not approved and Line Isolators service or with a tsd of 120 mw in ingur / thingalur ss fed areas

Sunguvarchatram 400 200MVA,400/110KV AUTO TRANSFORMER- During the LC Period Auto Transformer-4 in OFF condition and Auto Transformer -3 will Possible OCC 1283 Chennai 400 KV Monthly maintenance work Wed, 26-Apr-2017 09:00 Wed, 26-Apr-2017 17:00 1 0 Approved KV 4 cater the load of Auto Transformer-4 without interruption. Appd. 129/211

110KV METTUR FEEDER BREAKER CT DURING LC PERIOD OTHER END ALSO PROGRAMMED TO AVAIL MONTHLY subject to the load 1284 Erode 110 KV ANTHIYUR 230 KV MONTHLY MAINTENANCE WORKS possible Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 15:00 1 Approved AND LINE SWITCH MAINTENANCE ON THIS FEEDER .NO SS WILL BE AFFECTED. condition existing

subject to the load 1285 Erode 230 KV KUNDAH PH3 230 KV PH3 - KARAMADAI FEEDER For monthly maintenance work Both ends are open condition, MODS are open condition possible Wed, 26-Apr-2017 8:00 Wed, 26-Apr-2017 17:00 1 Approved condition existing

During LC period, i)110KV Tenkasi ,Shenkottai, Keelapavoor & 110 KV Kadayam SS will 110KV Kodikurichi -Tenkasi - Papanasam be fed from 110 KV Papanasam - Kayathar feeder by closing of AB switch towards 1286 Madurai 110 KV KODIKURICHY 230 KV feeder section between 110 KV Kodikurichi For replacement of defective insulator at loc no: 16 Kadayam at Rastha SS end ii) 110Kv AB switch Towards Tenkasi will be kept opened at POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 Sub to wind gen Approved SS -Tenkasi SS kodikurichy ss and 110Kv AB switch Towards Kodikurichy will be kept opened at Tenkasi ssiii).Hence no SS will be affected. Sub to 230 KV Paruthiyur feeder breaker, CT & Line During the LC period, there will be no supply on the above feeder. Concurrence to be 1287 Madurai 230 KV PUGALUR 230 KV Monthly Maintenance work POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 concurrance from Approved switch only obtained from M/s Regen power Tech.Paruthiyur. Paruthiyur

1. 110KV UNJANAI - BKB-II FEEDER 1. subject to load Subject to BREAKER ,CT'S AND LINESIDE ISOLATOR 1. 110KV PALLIPALAYAM SS ALSO AVAILING TOTAL SHUTDOWN ON THE SAME 1. possible 2. condition existing; 1288 Erode 110 KV UNJANAI 230 KV FOR MONTHLY MAINTENCE WORK. Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 EE/SLDC/Erode ONLY.2. AUTO TR NO :I AND IT'S DAY postponed 2. tsd relief approval BREAKERS & CT'S ONLY insuffiicient

1.110KV UNJANAI - SANKARI FEEDER BREAKER , CT'S AND LINESIDE ISOLATOR sankagiri ss tsd Subject to 1. 110KV SANKARI SS ALSO AVAILING TOTAL SHUTDOWN ON THE SAME DAY.2. 1289 Erode 110 KV UNJANAI 230 KV ONLY.2. 230KV UNJANAI - SALEM FOR MONTHLY MAINTENANCE WORK postponed Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 scheduled for EE/SLDC/Erode SALEM 400KVSS ALSO PRAMMED TO AVAIL L.C ON THE SAME DAY ON THAT DAY 400KVSS FEEDER BREAKER, CT'S AND 21.04.2017 approval LINESIDE ISOLATOR ONLY. TUTICORIN -AUTO 230 On 230 KV TTN -Kayathar feeder breaker Possible sub to 1290 Madurai 230 KV For monthly maintenance work During the Lc period No SS will be affected. POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 Approved KV with CT bus and line side switches TTPS gen

to be scheduled after the 230 kv mtps 3 to thingalur 230 KV Thingalur # - Its CTs, BREAKER, feeder is back in 1291 Erode 230 KV Salem 400 KV Both end Monthly Maintenance Work Both end Monthly Maintenance Work postponed Wed, 26-Apr-2017 8:00 Wed, 26-Apr-2017 14:00 1 Not approved BUS & LINE SWITCHES service or with a tsd of 120 mw in ingur / thingalur ss fed areas CHECKANURANI SW 1292 Madurai 230 KV 230KV Buscoupler Breaker For Monthly maintenance works During the LC period, no supply will be affected POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 0 Approved STATION 230 KV During the LC period 110KV Valuthur - Perungulam and 110KV Arkay - Mandapam - 1293 Madurai 110 KV VALUTHUR 230 KV 110KV VGTPS - Perungulam feeder entire. Tree cutting work. POSSIBLE Wed, 26-Apr-2017 10:00 Wed, 26-Apr-2017 17:00 1 0 Approved Perungulam feeders will be in service. Hence, there is ''NO' interruption to Perungulam SS No interruption to any SS. 110KV Manalmedu SS proposed to shutdown. The 110KV 110KV Vaitheeswarankoil- LTPCL feeder 1294 Madurai 110 KV KADALANGUDI 230 KV Line inspection and rectification work. V.Koil, Poraiyar and Thiruvengadu SS supply fed from 110KV Kadalangudy- V.Koil POSSIBLE Wed, 26-Apr-2017 10:00 Wed, 26-Apr-2017 16:00 1 0 Approved entire feeder. On 230/110KV Auto.Tf- 3 & its allied During the LC Period the Auto.Tf-3 Load will be Contained other Auto.Tf- 1 & 2. Hence Sub to load 1295 Madurai 230 KV KARAIKUDI 230 KV For Monthly Mtc Work POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 Approved Equipments. there will be No interruption of Supply. condition On 110KV Devakottai # S/B Sakkavayal & During the LC Period the Devakottai SS will be under TSD. Sakkavayal will be fed radially 1296 Madurai 110 KV KARAIKUDI 230 KV For Disc Replacement Work. POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 0 Approved Devakottai. from 230KV KKDI SS.Hence there will be No interruption of Supply. 110 kv salem to Subject to PALLAKAPALAYAM 230 110KV Sankari -I# CT,Breaker and 110KV 1.Veppadai 110KV SS Avail Total Shud down on that day and Radially from other 1297 Erode 110 KV Monthly Maintenance work postponed Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 sankagiri section EE/SLDC/Erode KV Sankari II # CT,Breaker end.2.Radially from other end and LC taken one by one. lc recommended approval

MONTHLY MAINTENANCE WORKS AND LINE 1298 Madurai 230 KV KAVANOOR 230 KV 230 KV KAVANOOR-SIPCOT # NO SUPPLY IN THE FEEDER POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 0 Approved MAINTENANCE WORKS

110 KV KGTPS-THIRUVARUR FEEDER BREAKER TESTING AND OTHER MAINTENANCE 1299 Madurai 110 KV KUTTALAM BREAKER WITH ENTIRE LINE AT BOTH During the LC period there is no interruption of supply to any ss POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 0 Approved WORKS IN ISOLATORS AT KGTPS END END.

OTHAKKAL MANDABAM 230 KV OKM-Ponnapuram Feeder Entire for annual relay testing work by GRT wing and subject to the load 1300 Erode 230 KV During the LC period, the other 230 KV feeders are in service to cater the SS loads. possible Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 Approved 230 KV (Breaker, CT's, 89M1, 89M2 & 89L Isolators) monthly maintenance works. condition existing

subject to the Auto Transformer II will be in service. 110 KV Deviakurichy-Singipuram feeder I and II will 1301 Erode 230 KV DEVIAKURICHI 230 KV For Monthly Maintenance work possible Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 other auto tr Approved Breakers and CTs be kept radial from Singipuram 230kV SS end loading limit At present the 230KV Arani- Singarapet Feeder Breaker is in Hand Tripped condition. 230KV Arani- Singarapet Feeder Breaker, 1302 Chennai 230 KV ARNI 230 KV For monthly maintenance work Also on 26.04.2017 LC scheduled in 230KV Arani Singarapet 230KV Feeder by both Sub Possible Wed, 26-Apr-2017 09:00 Wed, 26-Apr-2017 14:00 1 0 Approved 230KV CTs and Line Isolator stations ( Arani and Singarapet SS) for Monthly Maintenance work.Hence there will be no interruption of supply. 110KV KAYATHAR -SURULIYAR FEEDER DURING THE LC PERIOD,SANKARAN KOVIL SS WILL BE RADIALLY FED FROM 1303 Madurai 110 KV KAYATHAR 230 KV SECTION B/W KAYATHAR & 1)Line inspection and rectification work POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 0 Approved SURULIYAR POWERHOUSE HENCE NO SS AFFECTED SANKARANKOVIL

110KV KGTPS-Thiruvarur express feeder No interruption to any SS. All other feeders will be in tied condition. AEE/Lines/Thiruvarur 1304 Madurai 110 KV KADALANGUDI 230 KV Line inspection and rectification work POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 16:00 1 0 Approved entire also applied LC on the same.

TUTICORIN -SIPCOT On 230 KV Sipcot-Kavanoor feeder breaker a) For monthly maintenance works. B) For Main-II 1305 Madurai 230 KV POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 0 Approved 230 KV with CTs and line isolators only. Distance relay changing work.

Possible OCC 1306 Chennai 400 KV Sriperumbudur 400 KV 400KV HV-1 Breaker Quarterly maintenance work During the period of shutdown Auto-1 will be fed by 400kv tie breaker 352 Wed, 26-Apr-2017 09:00 Wed, 26-Apr-2017 17:00 1 0 Approved Appd. 129/212

to be scheduled after the 230 kv mtps 3 to thingalur fOR Checking Of Jumbercone Tightness at River feeder is back in 1307 Erode 230 KV METTUR AUTO 230 KV 230 KVSS - Thingalaur feeder entire Both K.R.Thoppur SS and Thingalur SS have Programmed for Mtc work on that day. postponed Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 Not approved crossing Towers LOC NO: 198 & 199 service or with a tsd of 120 mw in ingur / thingalur ss fed areas

230 KV Arani # Breaker and CTs& line To carry monthly maintenance work by During the LC period both ends Maintenance work programmed and hence no interruption other feeders will 1308 Erode 230 KV SINGARAPET 230 KV possible Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 15:00 1 Approved isolators AEE/MTC/230 KV SS / SPT of supply cater to the loads

May programmed NOT along with Total Subject to Total 1309 Madurai 110 KV SRPUDUR 230 KV On 110 KV Bus II & III Only B Phase damaged conductor replacement work. Wed, 26-Apr-2017 10:00 Wed, 26-Apr-2017 17:00 1 POSSBLE s/d in Ko1&2 shutdown feeders Subject to 1310 Chennai 110 KV manali230kv 110KV Athipet - L&T Jumper tightness. Tower to Tower inspection. All other feeder in service. Possible Wed, 26-Apr-2017 08:00 Fri, 28-Apr-2017 18:00 3 concurrence from Approved L&T subject to the For Monthly maintenance work( 110 KV Kallimadai During the LC Period 110 KV Arasur- Coimbatore feeder radial from 230 KV Coimbatore feeder being kept 1311 Erode 110 KV ARASUR 230 KV possible Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 12:00 1 Approved Breaker and Its CTs. SS total Shut down) SS. radial from coimbatore ss

During the LC period, a)An Other 100 MVA Auto Transformer -II will be in service. b) All 100 MVA Auto Transformer - I ,HV-I,LV-I 1312 Madurai 230 KV ALUNDUR 230 KV a)Monthly maintenance work. b)Relay Testing work. other 110 KV feeders will be in service. c)There will be no interruption of supply to any POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 0 Approved Breaker's, CT's and Isolators. other feeders.

110 KV Samalpatty # II, SF6 Bkr, CTs & Line During the LC period 110KV Samalpatty Railway Traction will be transferred to 110KV feeder 1 will be in 1313 Erode 110 KV Singarapet 110 KV Monthly maintenance work possible Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 15:00 1 Approved Isolator. Samalpatty I feeder, hence no interruption of supply service

400kv Main Breaker for ICT3(412-52),230kv During the LC period there will be no supply in 400kv Main Breaker for ICT3(412- sub to wind gen 1314 Madurai 400 KV kayathar230kv LV Breaker for ICT3(203-52), Tie Breaker for Monthly Maintenance work 52),230kv LV Breaker for ICT3(203-52), Tie Breaker for ICT-2 & ICT-3 (411-52) and POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 and App 129 Approved ICT-2 & ICT-3 (411-52) and 400/230kv ICT3 400/230kv ICT3. Hence no substation affected. occ/210 Subject to GUMMIDIPOONDI 230 Monthly maintenance work , CT clamp and bolt nuts 1315 Chennai 110 KV 110KV Sanmar feeder concurance to be obtained from M/s. Sanmar 0 Wed, 26-Apr-2017 10:00 Wed, 26-Apr-2017 17:00 1 concurrence from Approved KV replacement M/s. Sanmar

230 KV Ponnapuram - OKM# Breaker, CT& For annual relay test by P&C WING / UDT & Monthly subject to the load 1316 Erode 230 KV PONNAPURAM 230 KV 1. 230KV GRID #, HENCE NO SS WILL BE AFFECTED possible Wed, 26-Apr-2017 10:00 Wed, 26-Apr-2017 17:00 1 Approved Line entire Maintenance works. condition existing

110 KV Kayathar - Suruliyar # Breaker with a) For Monthly Maintenance Workb) For GRT annual 1317 Madurai 110 KV KAYATHAR 230 KV During the LC period other end also avails LC hence No ss affected POSSIBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 0 Approved CT only relay testing work

1) 110KV Salem - Sankagiri feeder breaker kept hand tripped at Sankagiri 110KV SS.2) 110KV Salem - Sankagiri feeder series switch at Veerpandy 110KV SS towards Salem 110KV Salem - Sankagiri feeder section will be kept opened.3) There will be no supply in 110KV Salem - Sankagiri feeder section subject to the load 1318 Erode 110 KV SALEM AUTO 230 KV between Veerapandy 110KV SS and Railway crossing jumpers checking. possible Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 Approved between Veerapandy 110KV SS and Sankagiri 110KV SS.4) Mallasamudram 110KV SS condition existing Sankagiri 110KV SS. will be radially fed from Salem 230KV SS.5) Veerapandy 110KV SS is availing total shutdown on that day.6) There will be no interruption of supply to any SS. FOR(tlc Work) stringing between tower loc 63 to 64 1.110KV KYTHR-K.G.PATTI FEEDER SEC in the newly erected 230kv dc line from PYR-KGPTY-KYR DURING THE LC PERIOD,1.KALUGUMALAI SS WILL BE RADIALLY FED FROM B/W KYTHR &KALUGUMALAI;2.110KV Kayathar400KVSSto tuticorin autoSS Cross Over NOT # programmed 1319 Madurai 110 KV KAYATHAR 230 KV K.G.PATTI 2.SANKARAN KOVIL ss WILL BE RADIALLY FED FROM SURULIYAR Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 Not approved KYTHR-SURULIYAR FEEDER SEC B/W the1.110KV KYTHR-K.G.PATTI FEEDER ;2.110KV POSSBLE along with Total HENCE NO SS AFFECTED KYTHR&SANKARAN KOVIL KYTHR-SURULIYAR FEEDER (L0C 355&356) (For s/d Safety Purpose) A) 110KV NEMMELI THIPPIYAKUDI- KOVILKALAPPAL (VIA:VADASERI) FEEDER A) FOR MONTHLY PREVENTIVE MAINTENANCE 1) DURING THE LC PERIOD 110/33-11KV VADASERI SS WILL AVAIL TOTAL NEMALITHIPIYAKUDI BREAKER, CT's, AND LINE ISOLATOR. B) WORK BY AEE/MTC/ N.T.KUDI.B) FOR Due to 110KKPL- Approved subject to 1320 Madurai 110 KV SHUTDOWN2) NO INTERRUPTION TO ANY SUBSTATIONS AND ALL OTHER 110KV POSISBLE Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 230 KV 110KV NEMMELI THIPPIYAKUDI- PREMONSOON INSPECTION WORK BY TVR(Exp)# LC Load FEEDERS ARE TIED CONDITION. KOVILKALAPPAL (VIA:VADASERI) FEEDER AE/LINES/ PATTUKKOTTAI. ENTIRE subject to the load 1321 Erode 110 KV METTUR AUTO 230 KV 110KV Anthiyur Feeder entire For Monthly Maintenance work During the LC period other 110KV feeders will be in service possible Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 17:00 1 Approved condition existing

110KV PYKARA - SANDYNALLAH # subject to the load 1322 Erode 110 KV PYKARA FOR MONTHLY MAINTENANCE WORK NIL possible Wed, 26-Apr-2017 8:00 Wed, 26-Apr-2017 17:00 1 Approved (BREAKER AND CT) condition existing

110 KV Cuddalore - J.K. Pharma # breaker, During the period of LCJ.K. Pharma - Under D.C. from 25.06.2004Hence NO Interruption 1323 Chennai 110 KV CUDDALORE 230 KV For monthly maintenance works Possible Wed, 26-Apr-2017 09:00 Wed, 26-Apr-2017 17:00 1 0 Approved of SupplyConcurrence obtained from SE/O/Villupuram

110KV ALR-AKY FEEDER CB,CTs AND subject to the tsd 1324 Erode 110 KV ALIYAR 230 KV Quarterly mtce work During the LC period AKY SS under shutdown condition possible Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 14:00 1 Approved LINE SECTION BETWEEN ALR SS&AKY SS being realized

1. 110KV MALAYADIPALAYAM SS WILL AVAIL TOTAL SHUTDOWN ON 26.04.2017 2. 110KV MARUTHUR # WILL KEPT RADIAL UP TO 110KV SALAIPUTHUR SS3. 110KV 110KV MARUTHUR # S/B 110KV subject to the load 1325 Erode 110 KV PONNAPURAM 230 KV For providing of Adjustable arching horns KETHANUR SS WILL FEED FROM 230KV ARASUR / 110KV KANIUR#4. 110KV possible Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 14:00 1 Approved SALAIPUTHUR & KETHANUR SS condition existing KARADIBAVI SS WILL BE FEED FROM FROM 230KV OKM SS/110KV NEGAMAM-II#5. HENCE NO SS WILL AFFECTED no tsd scheduled (i) During the LC period Unit 1 & 2 will be in shut down condition.(ii)110 Kv KRT feeder and auto tr 3 at kr 110 kV Commom Bus and its associated To carry out the erection (Replacement) of 3 nos will be fed radial from KRT SS up to Poolampatty SS end & series switch towards LMBPH Subject to thoppur ss would 1326 Erode 110 KV LOWER METTUR 2 equipment at 110 kV switch yard LMBPH- 2 / new PTs in the existing structure at LMBPH -2 / - 2 / Nerinjipettai at Poolampatty SS will be kept opened.(iii) 110kV LMBPH - 1 Feeder will postponed Wed, 26-Apr-2017 9:00 Wed, 26-Apr-2017 15:00 1 EE/SLDC/Erode overload; to be Nerinjipettai Nerinjipettai be kept cut off at LMBPH - 1 end.(iv) 110 kV LMBPH -3 feeder will be kept cut off at approval scheduled on a LMBPH - 3 end. sunday

BASIN 1327 Chennai 230 KV BRIDGE(GMRVASAVI) Auto Transformer 1 Routine maintenance work Auto TR 1 will not be in service, Auto Tr 2,3 , all 230 KV #s & 110 KV #s will be in service. Possible Wed, 26-Apr-2017 09:00 Wed, 26-Apr-2017 17:00 1 0 Approved 230 KV Possible with 1328 Chennai 110 KV Kadaperi 230kv 110 KV PALLAVARAM FEEDER QUARTERLY MAINTENANCE WORK 1.110 KV Pallavaram # will be off condition CBD Wed, 26-Apr-2017 09:00 Wed, 26-Apr-2017 12:00 1 0 Not approved Concurrence

1329 Chennai 110 KV THARAMANI 230 KV 110 KV Bus Coupler Qtrly. Mtce. work 110 KV BUS will be in service seperaly Possible Wed, 26-Apr-2017 09:00 Wed, 26-Apr-2017 17:00 1 0 To be discuss

1330 Chennai 230 KV SPKoil lines Auto Transformer 4 Monthly Maintenance Work Possible Thu, 27-Apr-2017 10:00 Thu, 27-Apr-2017 17:00 1 approved Approved

ONLY 40 TO 50 During LC Period there will be no supply in the entire feeder.Also, Thevaram CHECKANURANI SW For Monthly maintenance works and Line S/D PROPOSED. Approved Subject to 1331 Madurai 230 KV 230KV CKNI-Theni Feeder Entire SS,Ayyampalayam SS,Batlagundu SS,Vaigai Dam SS & Aundipatty SS are availing POSISBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 STATION 230 KV Maintenance works MORE S/D load condition shutdown NEEDED

Line premansoon inspection and rectification work, 1332 Madurai 230 KV THIRUVARUR 230 KV 110KV Thiruvarur - KGTPS Express feeder During the LC period there will be no interruption of supply to any other substation. POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 0 Approved Breaker, CT's and Isolator maintenance work.

230 kv kph 3 to 1333 Erode 230 KV THUDIALUR 230 KV 230KV Karamadai feeder entire For monthly mtce works During the LC period, other 230KV feeders will be in service postponed Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 14:00 1 karamadai feeder Approved lc recommended

1334 Madurai 230 KV KODIKURICHY 230 KV 230 KV Tie breaker For Monthly Maintenance work The Tie breaker already kept in idle condition. POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 0 Approved

On 230KV Kayathar - (400KVSS)Kayathar I a) For monthly maintenance work. b) Tower to 1335 Madurai 230 KV KAYATHAR 230 KV During the LC period, Other end also availing LC. Hence no SS affected. POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 0 Approved feeder breaker with CT & entire line Tower inspection work. FOR ANNUAL RELAY TESTING WORK BT subject to the AUTO TRANSFORMER III HV,LV BREAKER 1336 Erode 230 KV GOBI 230 KV P&C/GOBI AND FOR MONTHLY MAINTENANCE AUTO TRANSFORMER I AND II ARE IN SERVICE,IT MAY CATER THE LOAD possible Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 other auto trs Approved AND CT'S WORK loading limit

CHECKANURANI SW 230KV CKNI-Nallamanayakkanpatty Feeder For Monthly Maintenance work and Line 1337 Madurai 230 KV During LC Period there will be no supply in the entire feeder POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 0 Approved STATION 230 KV Entire Maintenance Work

HV Breaker I & II will be in service condition,Hence there will be no interruption of supply 1338 Erode 400 KV Salem 400 KV Monthly Maintenance Work possible Thu, 27-Apr-2017 8:00 Thu, 27-Apr-2017 14:00 1 occ approved Approved BREAKER, & Its SWITCHES to 400 / 230 KV Auto transformers I & II.

NALLAPPANAYAKANPA 230KV CHEKKANURANI FEEDER DURING THE L.C PERIOD OTHER END ALSO AVAILING L.C ON THAT DAY.NO SS 1339 Madurai 230 KV FOR MONTHLY MAINTENANCE WORK. POSSIBLE Thu, 27-Apr-2017 10:00 Thu, 27-Apr-2017 16:00 1 0 Approved TTY 230 KV BREAKER WITH C.T AND LINE ISOLATOR. WILL BE AFFECTED. Due to load condition. LC May 110KV PYR- KYR # ( sec between LINE MONTHLY MTCE AND PREMONSOON NO INTERRUPTION TO ANY SS.( K.G.PATTY SS RADIAL FROM PYR PH AND NOT 1340 Madurai 110 KV then I 230 KV Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 be programmed Not approved K.G.PATTY SS AND MUDANGIAR SS) INSPECTON WORKS MUDANGIAR SS RADIAL FROM KYR SS) POSSIBLE along with Total s/d

RENGANATHAPURAM 1341 Madurai 110 KV 110KV RNPM - Pugalur # Br,CT's Monthly Maintenance works During LC period the feeder will be radially fed from Pugalur end upto RNPM SS POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 14:00 1 0 Approved 230 KV

230/110 KV AUTO TRANSFORMER 1 - 50 AUTO TR. 1 WILL NOT BE IN SERVICE. LOADS TO BE CATERED BY THE OTHER 1342 Madurai 230 KV KAVANOOR 230 KV MONTHLY MAINTENANCE WORKS POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 0 Approved MVA, HV BR., LV BR. AUTO TR.

110KV UDAYATHOOR- RADAHAPURAM During the LC period the 110kvRadhapuram ss will be fed from 110kv SR.Pudur - 1343 Madurai 230 KV UDAYATHUR 230 KV MONTHLY MAINTENANCE WORK POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 14:00 1 Sub to wind gen Approved FDR. BR.,CT &LINESW Arumuganeri feeder2

GENERATI THE PWD DEMAND WILL BE MEET OUT BY OTHER STANDBY MACHINES AT DAM other machines 1344 Erode NG METTUR DPH MACHINE 4 MONTHLY MAINTENANCE WORKS possible Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 15:00 1 Approved POWER HOUSE,METTUR. will be in service STATIONS

During the LC period, a) other end also availing shutdown for monthly maintenance work 110KV TRICHY - ALUNDUR II breaker,CTs & a) For monthly maintenance works. b) Pre monsoon b) Intermediate 110 KV Manikandam SS also availing Total shutdown c) All other 110 KV 1345 Madurai 110 KV TRICHY 230 KV POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 16:00 1 0 Approved Line Isolator and line entire. inspection feeders will be in service d) There will be no interruption of supply to any other feeders & SS.

Line premansoon inspection and rectification During the LC period all other 230KV feeders are in tied condition. Hence there will be no 1346 Madurai 230 KV THIRUVARUR 230 KV 230KV Thiruvarur - Kadalangudy feeder POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 0 Approved work,Breaker, CT's and Isolator maintenance work. interruption of supply to any other substation.

DURING THE ABOVE SHUTDOWN PERIOD 110 KV PENNADAM SS IS ALSO 110 kv Pennadam (Radial) Feeder BREAKER 1347 Madurai 110 KV EACHANGADU 230 KV FOR MONTHLY MAINTENANCE WORK. AVAILING TOTAL SHUT DOWN and normaly the feeder is radial from Eachangadu 230 POSSIBLE Thu, 27-Apr-2017 10:00 Thu, 27-Apr-2017 14:00 1 0 Approved , CT'S. KV SS. During the above work, Eachangadu 230 KV SS loads will be fed from the other Auto 50 MVA ,Auto Transformer II &HV II, LV II For Monthly maintenance works & Annual Relay test 1348 Madurai 230 KV EACHANGADU 230 KV Transformer -I.Loads will be with in one transformer capacity since 110 KV Vridhachalam POSSIBLE Thu, 27-Apr-2017 10:00 Thu, 27-Apr-2017 17:00 1 0 Approved Breaker,CT's & their related Equipments by GRT/VPM. SS Loads are already transferred to 110 KV Neyveli - Deviakurichi feeder

subject to the load OTHAKKAL MANDABAM 230 KV OKM-Palladam Feeder Entire condition existing 1349 Erode 230 KV Polluted disc replacement work by lines wing. During the LC period, the other 230 KV feeders are in service to cater the SS loads. possible Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 Approved 230 KV (Breaker, CT's, 89M1, 89M2 & 89L Isolators) and both ends availing the lc

1350 Chennai 400 KV Thiruvalam 400 KV 230KV Singarapet feeder Maintenance & GRT Periodical Relay testing 1)230KV Singarapet feeder kept in OFF condition at both end. Possible Thu, 27-Apr-2017 09:00 Thu, 27-Apr-2017 17:00 1 0 Approved

No interruption to any SS. All other feeders will be in tied condition. Other end also 1351 Madurai 230 KV KADALANGUDI 230 KV 230KV Kadalangudy- Thiruvarur feeder entire For monthly Maintenance work POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 0 Approved applied LC on the same.

1.110KV ACK- VILLUPURAM I FEEDER WILL BE RADILLY CHARGED FROM 110KV VILLUPURAM SS UPTO 110KV THIDIVANAM SS AND 110KV LINE SIDE ISOLATOR 110KV VILLUPURAM I &II FEEDER OPEND CONDITION IN TOWARDS 230KV ACHARAPAKKAM SS SIDE AT 110KV 1352 Chennai 110 KV ACHRAPAKKAM 230 KV BREAKERS AND CT'S WITH LINE SIDE TO CARRYOUT MONTHLY MAINTENANCE WORK THIDIVANAM SS.2.110KV ACK- VILLUPURAM II FEEDER WILL BE RADILLY Possible Thu, 27-Apr-2017 09:00 Thu, 27-Apr-2017 16:00 1 0 Approved ISOLATOR CHARGED FROM 230KV VILLUPURAM SS UPTO 110KV ELAMANGALAM SS AND 110KV LINE SIDE ISOLATOR OPEND CONDITION IN TOWARDS 230KV ACHARAPAKKAM SS SIDE AT 110KV ELAMANGALAM SS.

230 KV Thiruvalam # Breaker, CTs & line To carry monthly maintenance work by During the LC period both ends Maintenance work programmed and hence no interruption other feeders will 1353 Erode 230 KV SINGARAPET 230 KV possible Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 15:00 1 Approved isolators AEE/MTC/230 KV SS / SPT of supply cater to the loads

subject to the 230/110KV, 100MVA Auto Transformer I, HV- For monthly mtce works & new differential relay 1354 Erode 230 KV THUDIALUR 230 KV During the LC period, Auto Transformer II & III will be in service. possible Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 other auto trs Approved I & LV-I commissioning loading limit

During the LC Period 110KV Vijayapathy SS supply Radially fed from SRPuthoor- 110KV Sankaner- koodankulam feeder For monthly maintenance & GRT Annual Relay 1355 Madurai 110 KV SANKANERI 230 KV Arumuganeri feeder-II, By Closing Buscoupler-II at 110KV Koodankulam SS.Hence no SS POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 14:00 1 Sub to wind gen Approved Breaker CTs & Lineswitches. Testing purpose. will be affected.

During the LC period, a)other end also aviling shut down. and Intermediate 110KV 110KV Alundur - Trichy-II Feeder 1356 Madurai 110 KV ALUNDUR 230 KV a)Monthly maintenance work. B)Relay testing work. Manikandam SS Also avail total shut down. b) All other 110 KV feeders will be in service POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 0 Approved breaker,CT's, and Line Isolators. c)There will be no interruption of supply to any other feeder's and ss.

subject to 110KV Singapuram Feeder-I Breakers, CT's 1.110KV Singapuram feeder-I will be fed radially from other end. 110KV Udayapatty SS 1357 Erode 110 KV SALEM AUTO 230 KV Monthly Maintenance work. possible Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 udayapatty ss Approved and Line Isolators. will be availing total shutdown. There will be no interruption to any SS or feeder. availing tsd

230KV Kayathar-1 feeder Main breaker (204- During the LC period there will be no supply in 230KV Kayathar-1 feeder Main breaker 1358 Madurai 230 KV kayathar400kv Monthly Maintenance work POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 0 Approved 52), CT,CVT and LAS (204-52), CT,CVT and LAS, Hence no substation affected.

Monthly maintenance of 110KV SR.Pudur #-1 SF6 1359 Madurai 110 KV KODAIYAR PH2 S.R Pudur 110KV feeder-I SF6 breaker Feeder will be radial from other end. Hence no SS will be affected. POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 0 Approved breaker & Annual relay test

110 KV Kayathar - Periyar # Breaker with CT LC programed a) For Monthly Maintenance workB) New C&R panel NOT 1360 Madurai 110 KV KAYATHAR 230 KV and New C&R panel replacement work by During the LC period other end also avails LC. Hence, no ss affected. Thu, 27-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 2 before 15th Apr Not approved replacement work by GRT POSSBLE GRT and along with s/d

For carrying out premonsoon inspection works by During the LC period,1) all other 230 KV feeders will be in tied condition,2) no supply 1361 Madurai 230 KV KADALANGUDI 230 KV 230 KV Kadalangudi -Thiruvarur feeder POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 0 Approved the AEE/Lines/Thanjavur. interruption to any SS.

subject to 110KV Karamadai-Irumborai feeder breaker, 1362 Erode 110 KV karamadai230KV For maintenance works. Total shutdown availed by Irumborai SS. possible Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 14:00 1 irumborai ss Approved CTs & CVTs. availing tsd 1) 110KV Salem - KR Thoppur II feeder breaker kept hand tripped at KR Thoppur 400KV SS.2) 110KV Salem - KR Thoppur II feeder series switch at Karuppur 110KV SS towards 110KV Salem - KR Thoppur II feeder section KR Thoppur will be kept opened.3) There will be no supply in 110KV Salem -KR Thoppur subject to 1363 Erode 110 KV SALEM AUTO 230 KV between Karuppur 110KV SS and KR Railway crossing jumpers checking. II feeder section between Karuppur 110KV SS and KR Thoppur 400KV SS.4) 110KV possible Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 karuppur ss Approved Thoppur 400KV SS. Salem - KR Thoppur II feeder will be radially fed upto Hastampatty 110KV SS from Salem availing tsd 230KV SS.5) Karuppur 110KV SS will be availing total shutdown on that day.5) There will be no interruption of supply to any SS.

1)230/110KV Auto Transformer I (100MVA), HV I Breaker & LV I breaker, CT's, Isolators. 1)For monthly maintenance work and to attend Oil During above period of shut down 1)110KV Kallakudy -I feeder and 110KV DSSL 2)110KV DSSL (Krishnapuram) Feeder 1364 Madurai 230 KV PERAMBALUR 230 KV Leakege in 110KV Line P.T of DSSL Feeder 2)For (Krishnapuram)feeder tie will be opened at Perambalur SS. 2)The remaining loads will be POSSIBLE Thu, 27-Apr-2017 10:00 Thu, 27-Apr-2017 16:00 1 0 Approved breaker,CT's and Wave trap,Line PT. 3) annual relay test by wing GRT/Trichy. fed Through Auto Transfermer III(100MVA) of Perambalur Auto SS. 110KV DSSL Feeder Line section between Perambalur SS and Esanai SS. 1) DURING THE LC PERIOD 110/33-11KV PERAVURANI SS, 110/33KV 110KV Pattukkottai -Peravurani - SETHUBAVACHATHIRAM SS FED FROM 110 KV PATTUKKOTTAI SS RADIALLY.2) NEMALITHIPIYAKUDI Sethubavachitram-Keeramangalam Radial For Premonsoon Inspection Work by Sub to load 1365 Madurai 110 KV 110KV KEERAMANGALAM SS LOAD WILL BE TRANSFERRED TO 230 KV POSSIBLE Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 Approved 230 KV feeder. (LP: 110KV Sethubavachitram SS to AE/Lines/pattukkottai. condition PUDUKKOTTAI SS3) NO INTERRUPTION TO ANY OTHER SS. 4) LC APPROVAL TO 110KV Keeramangalam SS ). BE OBTAINED FROM SE/O/TRICHY. a) 110 kV additional bus PTs' com missing works by During the L.C perioda)Unit-1 in standby condition and unit -2 will be under independent subject to the AEE/P&C/Metturb) To carry out annual relay test in spell AOH worksb)The PWD demand will be met out by unit-1 after completion of import at erode ss 1366 Erode 110 KV LOWER METTUR 1 110kV common bus L.C possible Thu, 27-Apr-2017 8:00 Thu, 27-Apr-2017 17:00 1 Approved 110 kV BPH-1 to MDPH feeder and 110 kV BPH-1 to common bus L.C works.c)As present the LMBPH-1/chekkanur bondage HRL (190.70) is bus and the load BPH-2 feeder by AEE/P&C/Mettur lower then the FRL. condition existing 110 KV Capacitor Bank II with Breaker & During the period of LC110 KV Capacitor Bank I will be in serviceHence NO Interruption Concurrence from Concurrence from 1367 Chennai 110 KV CUDDALORE 230 KV For monthly maintenance works 0 Thu, 27-Apr-2017 09:00 Thu, 27-Apr-2017 17:00 1 of SupplyConcurrence obtained from SE/O/Villupuram SE/O SE/O

1368 Chennai 230 KV THIRUVALAM 230 KV For replacement of damaged disc at Loc 334 & 335. Possible Thu, 27-Apr-2017 09:00 Thu, 27-Apr-2017 14:00 1 0 Approved entire. feeders 230KV Link I, Link II, S. P.Koil feeders are in service.Hence there will be no interruption of supply please. 1.Monthly Maintenance only one Auto Transformer is available and Auto Transformer will both the 230 kv not be in service and intermediate SS loads will be fed radially from other ends,230KV 1369 Erode 230 KV SINGAPURAM 230 KV Auto Transformer (Auto Transformer-II) Monthly Maintenance possible Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 and 110 kv bus to Approved feeders will be fed radially.(No LC Proposed at DVKY.End & at salem end)and 110KV be in service Udyapatty SS is availing TSD on 27.04.2017. to be scheduled 230KV KPH3 to Karamadai Feeder Tower No:60 to on 26.04.2017 1370 Erode 230 KV KUNDAH PH3 230KV KPH3 to Karamadai Feeder 72. Pre monsoon inspection work and maintenance Bus and line both end open condition earth switch closed condition. postponed Thu, 27-Apr-2017 9:00 Thu, 27-Apr-2017 17:00 1 along with Already approved work. maintenance works

1371 Chennai 230 KV SPKoil230 KV 230 KV Kalpakkam feeder 1 Insulator Replacement work Possible Fri, 28-Apr-2017 09:00 Fri, 28-Apr-2017 17:00 1 0 Approved

1) Virudhunagar. Aviyur and Railway Traction loads will be Transferred to 110KV Dub to ANPM 1)110 KV Pasumalai - Anupankulam # BKR 1)Maintenance Works of BKr & CT,LI 2)Flash over 1372 Madurai 110 KV PASUMALAI 230 KV Pasumalai Thullukkapatty Feeder. 2) If necessary the above feeder can be kept radial POSISBLE Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 14:00 1 AUTO 1 LC for Approved & CT, LI only. 2) Line entire Disc replacement works in Aviyur Spur Line from any one end .3) Hence No interruption of Supply to any SS 10Days During the LC period 110 KV Virudhunagar SS,110 KV Aviyoor SS & Railway Traction SS Due to ANPM ANUPPANKULAM 230 110 KV APKM - MADURAI # Br., CT., and a) For Monthly Maintenance Works. b) For flash over NOT 1373 Madurai 110 KV load will be transferred to 110 KV PSQ - Thulukkapatti # Already AE/L/PSQ programed Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 AUTO 1 LC for Approved KV line entire disc replacement work at Loc No. 5 & 14 POSSIBLE lines LC. Other end also availing LC on the same date and time. Hence no ss affected 10Days

For CT tan delta testing and isolator allignment Possible OCC 1374 Chennai 400 KV Alamathy 400 KV 400 KV SVC-I feeder 1. 400 KV SVC-I feeder will not be in service.2. 400 KV SVC-II feeder will be in service. Fri, 28-Apr-2017 10:00 Fri, 28-Apr-2017 17:00 1 0 Approved work. Appd. 129/181

During the lc period: 1Auto I Will be Out of Service AutoII & III Will Cater the Present SS Load, 389 mB will be kept at open condition.2 230 KV Veeranam # or Auto I load will be transferred to main bus through Tie breaker by closing of transferred bus isolators3Auto I 1375 Madurai 230 KV KODIKURICHY 230 KV On 230KV Bus Section I # For Monthly Maintenance work POSSIBLE Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 Sub to wind gen Approved load will be transferred through Tie breaker that condition 230kv Veeranam # Will be radial from Other End.4230kv Veeranam # load will be transferred through Tie breaker that condition Auto I Out of service.

sub to Approved subject to On 230KV Kayathar - (400KVSS)Kayathar II a) For monthly maintenance work. b) Tower to 1376 Madurai 230 KV KAYATHAR 230 KV During the LC period, Other end also availing LC. Hence no SS affected. POSSIBLE Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 normalizaiton of Normalisation of feeder breaker with CT & entire line Tower inspection work. KYR #1 feeder 1

Subject to For monthly maintenance of Breaker,CT and Line During the LC period Mettur end also programmed to avail LV on 110KV Anthiyur-Mettur already scheduled 1377 Erode 110 KV ANTHIYUR 230 KV 110KV Anthiyur - Mettur entire feeder. postponed Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 15:00 1 EE/SLDC/Erode switch. feeder.No SS will be affected. on 26.04.2017 approval

subject to 110KV THALAVAIPET FEEDER BREAKER DURING LC PERIOD 110/22KV THALAVAIPET SS WILL AVAIL TOTAL SHUT DOWN 1378 Erode 110 KV ANTHIYUR 230 KV MONTHLY MAINTENANCE WORKS possible Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 15:00 1 thalavaipettai ss Approved CT AND LINE SWITCH AS APPROVED. NO SS WILL BE AFFECTED. availing tsd

1. 110KV UNJANAI - SANKARI FEEDER BREAKER , T'S AND LINESIDE ISOLATOR DURING L.C PERIOD, 1. SNAKARI 110KVSS ALSO AVAILING TOTAL SHUTDOWN ON sankagiri ss tsd Subject to 1379 Erode 110 KV UNJANAI 230 KV ONLY.2. 230KV UNJANAI - SALEM FOR MONTHLY MAINTENANCE WORK THAT DAY.SALEM 400KVSS ALSO AVILAING L.C ON THAT FEEDER ON THE SAME postponed Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 16:00 1 scheduled for EE/SLDC/Erode 400KVSS FEEDER BREAKER, CT'S AND DAY 21.04.2017 approval LINESIDE ISOLATOR ONLY

TUTICORIN -AUTO 230 On 110 KV TTN - ARNI - II # Breaker with CT No ss will be affected. During this Lc period 110KV Manjalneerkayal SS will be radialy fed 1380 Madurai 110 KV for monthly maintenance work POSSIBLE Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 0 Approved KV bus & line side switches from 110KV Arni-SS

subject to the 230 KV LinkII # - Its CTs, BREAKER, BUS & 1381 Erode 230 KV Salem 400 KV Both end Monthly Maintenance Work Both end Monthly Maintenance Work. possible Fri, 28-Apr-2017 8:00 Fri, 28-Apr-2017 14:00 1 other link feeder Approved LINE SWITCHES loading condition

For attending breaker, CT's and isolators Monthly During the LC period 110KV VGTPS Phase I Line 4 and VGTPS Phase I line 3 feeders 1382 Madurai 110 KV VALUTHUR 230 KV 110KV VGTPS - Phase II line 3 POSSIBLE Fri, 28-Apr-2017 10:00 Fri, 28-Apr-2017 17:00 1 0 Approved maintance work. will be in service.

LC to be availed one by one1.Thevur 110KV SS proposed tsd2.Radi1ally fed from other 1.110KV Thevur #,2.110KV BKB-I#,3.110KV end3.Auto Transformer-1 will be manage 110KV BKB-1# and Sankar-I# Load and Auto Bus coupler,4.Auto Transformer-I-HV &LV Subject to PALLAKAPALAYAM 230 Transformer -II will be manage the 110KV Sankari- II#,Barrage-IV # and Thevur# already scheduled 1383 Erode 110 KV Side,5.Auto Transformer-II-HV &LV Tan Delta value measurement in CTs postponed Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 EE/SLDC/Erode KV load4.Auto II Transformer will be manage the load5.Auto I Transformer will be manage on 21.04.2017 Side,6.230 KV Gobi #,7.230KV K.R.Thoppur# approval the load6.Radially fed from other end7.Radially fed from other end8.Both Auto 8.230KV Bus coupler CTs,Breaker Transformer and 230KV Feeders load Transfer to 230KV Bus I

230KV UDAYATHOOR- DURING THE LC PERIOD THERE WILL BE NO SUPPLY TO ENTIRE FEEDER. OTHER 1384 Madurai 230 KV UDAYATHUR 230 KV ABISEKAPATTI(PGCIL)FEEDER, MONTHLY MAINTENANCE WORK POSSIBLE Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 14:00 1 App 129 occ/183 Approved END WILL BE INFORMED. BR.,CT.CVT&L.SW 110KV Narimanam - CPCL - Nagapattinam During the LC period the 110KV Narimanam - Nagapattinam feeder will be in service. 1385 Madurai 110 KV THIRUVARUR 230 KV Line premansoon inspection and rectification work POSSIBLE Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 0 Approved feeder Hence there will be no interruption of supply to any other substation.

OTHAKKAL MANDABAM 230 KV OKM-Coimbatore Feeder Entire for annual relay testing work by GRT wing and other feeders will 1386 Erode 230 KV During the LC period, the other 230 KV feeders are in service to cater the SS loads. possible Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 Approved 230 KV (Breaker, CT's, 89M1, 89M2 & 89L Isolators) monthly maintenance works. cater to the loads

230 KV STCMS # Breaker, CTs and line side other feeders will 1387 Erode 230 KV DEVIAKURICHI 230 KV For Monthly Maintenance work 230 KV Deviakurichy- Pudanchandai & Singapuram Feeders will be in service possible Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 Approved isolator cater to the loads

230KV CBE-Othakalmandapam Feeder other feeders will 1388 Erode 230 KV COIMBATORE 230 KV For Monthly Maintenance Works LC Proposed on 230KV OKM-CBE Feeder at 230KV OKM SS possible Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 15:00 1 Approved Breaker, CTs and 89L Isolator cater to the loads

subject to the 1389 Erode 110 KV UDUMALPET 230 KV 110KV CAPACITOR BANK I ENTIRE FOR MONTHLY MAINTENANCE WORKS NO FEEDERS WILL BE AFFECTED DURING THE LC PERIOD approved Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 voltage profile in Approved the grid

1390 Chennai 230 KV Sriperumbudur 400 KV 230KV SPR-NCTPS Feeder and entire line Quarterly maintenance and jumper tightness work All other 230kv feeders will be in service Possible Fri, 28-Apr-2017 09:00 Fri, 28-Apr-2017 17:00 1 0 Approved

subject to the tsd relief at palladam SADAYAMPALAYAM 230 230 KV Sadayapalayam-Palladam # breaker 1391 Erode 230 KV Annual relay testing work by P&C Palladam. 230 KV Sadayapalayam-Ponnapuram # in service. possible Fri, 28-Apr-2017 10:00 Fri, 28-Apr-2017 17:00 1 ss after the issue Approved KV CT's & Isolators. of 230 kv okm to cbe feeder

1. During the above LC Period, 110Kv Kallakudy II # Breaker is in H/T condition at 230KV Tahtchankurichy SS . 2.110Kv Thatchankurichy II# Breaker is in H/T condition at 110KV kallakudy Grid SS. 3.Bus and Line Isolator towards 110KV Kallakudy Grid SS will be kept 110 KV SMPM-Kallakudi -II # CT's , Breakers in open condition at 230KV Thatchankurichy SS. 4.Line Isolator towards 230KV 1392 Madurai 110 KV SAMAYAPURAM 230 KV Monthly Maintenance Works and Line Patrol Work. POSSIBLE Fri, 28-Apr-2017 10:00 Fri, 28-Apr-2017 17:00 1 0 Approved and entire line portion (tied feeder) . Thatchankurichy SS will be kept in open condition at 110KV Kallakudy Grid SS. 5. Earth switch will be kept in closed condition at 110Kv Kallakudy grid ss and 230KV Thatchankurichy SS. 6.110 KV Kallakudi-I # will be in tied condition. 7.There will be no interruption to any other SS.

For Monthly maintenance work and Annual relay subject to the 230/110 KV Autotransformer - IV, HV-VI, LV- During the LC Period other 3 Nos of Auto transformer will be in service.During the LC 1393 Erode 230 KV ARASUR 230 KV testing works by P & C wing /Thudialur(110 KV possible Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 other auto trs Approved Period 110 KV Kaniyur SS total Shutdown Kaniyur SS under total Shut down) loading limit

During the LC period, a)An Other 100 MVA Auto Transformer -I will be in service. b) All 100 MVA Auto Transformer - II ,HV-II,LV-II 1394 Madurai 230 KV ALUNDUR 230 KV a) Monthly maintenance work. b)Relay Testingwork. other 110 KV feeders will be in service. c) There will be no interruption of supply to any POSSIBLE Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 0 Approved Breaker's, CT's and Isolators. other feeders.

subject to the 230KV Link Feeders II feeder Breakers, CTs 230KV Link-II feeder will be radially fed from other ends. 3Nos 230KV feeder will be in 1395 Erode 230 KV SALEM AUTO 230 KV Monthly Maintenance work. possible Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 other link feeder Approved and Line isolators. service and there will be no interruption to any SS or feeder. loading condition

sub to 230Kv Kayathar-2 feeder Main Breaker (205- During the LC period there will be no supply in 230Kv Kayathar-2 feeder Main Breaker 1396 Madurai 230 KV kayathar230kv Monthly Maintenance work POSSIBLE Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 normalizaiton of Approved 52),CT and CVT (205-52),CT and CVT. hence no substation affected KYR #1

Subject to GUMMIDIPOONDI 230 Monthly maintenance work, CT clamp, and bolt nuts Concurance to be obtained from M/s. Kamatchi during the period of Shut down the 230KV 1397 Chennai 230 KV 230kv Kamatchi feeder Possible Fri, 28-Apr-2017 10:00 Fri, 28-Apr-2017 17:00 1 concurrence from Approved KV replacement work Kamatchi private generation may be floating there is no intrupption grid M/s. Kamatchi

1. 110KV PETHAPPAMPATTY # WILL BE KEPT RADIAL FROM 230KV UDT SS UP TO subject to the AUTO TR-III, HV-III, LV-III Breaker and Its THIS END2. 110KV THUNGAVY # WILL BE KEPT RADIAL FROM 230KV UDT SS UP 1398 Erode 230 KV PONNAPURAM 230 KV For Monthly Maintenance works. possible Fri, 28-Apr-2017 10:00 Fri, 28-Apr-2017 17:00 1 other auto trs Approved CTs TO THIS END 3. HENCE, IT IS EXPECTED THAT THE LOADS WILL BE WITH IN THE loading limit LIMITS OF OTHER TWO AUTO TR's 4. HENCE NO SS WILL BE AFFECTED. During LC period110KV KN Patty SS availing Total Shut down.110KV Rasipuram SS will 1. subject to kn 110KV Kalappanaickenpatty feeder CB, CTs For regular maintenance works. Originally scheduled Subject to PUDHANCHANTHAI 230 be transferred to 110KV Salem-Mallur feeder.110KV Namagiripet SS will be transferred to 1. possible 2. patty ss tsd; 1399 Erode 110 KV and Line Switch.110KV East Bus, its Pts and on 21.04.2017 is now revised due to change of Total Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 EE/SLDC/Erode KV 110KV DVk-Thammampatty feeder.Other 110KV Feeders will be catered by Auto-I in postponed 2.load transfers Bus side Switches-5 Nos. Shut down by KN Patty SS-approved. approval servive.No supply interruption. not feasible During the LC period,1) 110 KV Punalkulam - Trichy feeder will be radial from Trichy 230 110 KV Thanjavur - Punalkulam feeder For monthly maintenance works by the KV SS upto Punalkulam 110 KV SS,2) the other end also (i.e. Punalkulam 110 KV SS) 1400 Madurai 110 KV THANJAVUR 230 KV POSSIBLE Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 0 Approved Breaker, CT & Line Isolator. AEE/Mtce/Thanjavur. will avail LC on the same day,3) Punalkulam 110 KV Grid SS will avail shutdown on the same day,4) no supply interruption to any SS. 110KV T(K)GTPS - THIRUVARUR FEEDER (VIA: 110KV ULLIKKOTTAI SS, 110KV 1) DURING THE LC PERIOD, 110KV MANNARGUDI SS AND 110KV OKKANADU OKKANADU KEELAIYUR SS & 110KV FOR PREMONSOON INSPECTION WORK BY KEELAIYUR SS RADIALLY FED FROM 230KV THIRUVARUR SS.2) 110KV 1401 Madurai 110 KV THIRUVARUR 230 KV POSSIBLE Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 0 Approved MANNARGUDI SS), LINE PORTION JE/LINES/ PATTUKKOTTAI. ULLIKKOTTAI SS RADIALLY FED FROM T(K)GTPS . 3) NO INTERRUPTION TO ANY BETWEEN 110KV ULLIKKOTTAI SS TO SUBSTATIONS. 110KV OKKANADU KEELAIYUR SS . 1) To carryout Monthly maintenance on equipment's 110 KV Palladam feeder breaker,CT's and subject to by AEE/Maintenance/Palladam2) To carryout During LC period 1) 110 KV Palladam SS availing Total shut down2) No other sub station 1402 Erode 110 KV PALLADAM 230 KV Line side isolator with Line up to 110 KV possible Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 palladam ss Approved Premonsoon inspection on Lines by will be affected Palladam SS availing tsd AEE/Lines/palladam 1) To carryout Monthly maintenance work on subject to 110 KV Palladam - Elavanthy feeder equipments by AEE/maintenance/Palladam2) To During LC period 1) 110 KV Elavanthy SS and 110 KV Pongalur SS availing Total shut pongalur and 1403 Erode 110 KV PALLADAM 230 KV breaker,TCT's and Line side isolator with line possible Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 15:00 1 Approved carryout Premonsoon Inspection on Line by down2) No other SS will be affected elavanthy ss up to 110 KV Pongalur SS AEE/Lines/Palladam availing tsd subject to the tsd 1) To carryout Monthly maintenance works on 230 KV Palladam - Sadayapalayam feeder relief at palladam equipment's by AEE/Maintenance/Palladam2) To During LC period 1) other 2 Nos 230 KV feeders will be in service2) 110 KV Pongalur SS 1404 Erode 230 KV PALLADAM 230 KV breaker,CT's and line side isolator with entire possible Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 17:00 1 ss after the issue Approved carryout premonsoon inspection on Line by and 110 KV Elavanthy SS availing Total shut down line of 230 kv okm to AEE/Lines/palladam cbe feede During the period of LC110 KV Capacitor Bank II will be in serviceHence NO Interruption Concurrence from Concurrence from 1405 Chennai 110 KV CUDDALORE 230 KV For monthly maintenance works 0 Fri, 28-Apr-2017 09:00 Fri, 28-Apr-2017 17:00 1 of SupplyConcurrence obtained from SE/O/Villupuram SE/O SE/O Possible OCC 1406 Chennai 230 KV THIRUVALAM 230 KV 230KV Thiruvalam - Chittoor feeder entire. For EHT Line Maintenance Works Fri, 28-Apr-2017 09:00 Fri, 28-Apr-2017 14:00 1 0 Approved feeders 230KV Link II, Mosur, Link I feeders are in service.Hence there will be no Appd. 129/180 interruption of supply please.

i)On 230KV Chittoor interstate feeder Possible OCC 1407 Chennai 230 KV THIRUVALAM 230 KV i)For Monthly Maintenance Works Fri, 28-Apr-2017 09:00 Fri, 28-Apr-2017 15:00 1 0 Approved Appd. 129/180 230KV Link-I # and 230KV Mosur feeders will be in service and cater the SS Loads. Hence there will be no interruption of supply please. subject to 110KV ALR-UDT-II FEEDER CB,CTs AND PMI work by JE/Lines/Pollachi and Half-yearly MTtce devanurputhur ss 1408 Erode 110 KV ALIYAR 230 KV LINE SECTION BETWEEN ALR SS&DEV- During the LC period UDT-1 feeder will caters the load possible Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 14:00 1 Approved work being fed from PUDUR SS udpt ss For providing of dropper jumper in 230KV During the LC period,Auto transformer - I, HV-I, LV-I in tripped condition.230KV Anuppankulam - Madurai feeder Bus Bar to 230KV ANUPPANKULAM 230 Anuppankulam-Kayathar feeder and 230KV Anuppankulam-Madurai feeder will be under 1409 Madurai 230 KV 230KV Northern Bus entire. strung Bus, line switch to terminal tower and HV-I POSISBLE Fri, 28-Apr-2017 9:00 Fri, 28-Apr-2017 12:00 1 0 Approved KV total shutdown.Auto Transformer-II & III will be fed from 230KV Anuppankulam-Sterlite isolator.( Augmentation of 100MVA to 160MVA Auto feeder only. Transformer work) 110KV Valavanur SS availing Total shutdown and 110KV supply to the 1410 Chennai 110 KV Villapuram 110 KV 110 KV VPM- Kandamangalam Breaker & CT maintenance works 110KVKandamangalam SS will be fed from Villupuram 230KV SS. by closing the Possible Fri, 28-Apr-2017 09:00 Fri, 28-Apr-2017 17:00 1 0 Approved

1411 Chennai 230 KV SPKoil lines Auto Transformer 3 Monthly Maintenance Work Possible Sat, 29-Apr-2017 10:00 Sat, 29-Apr-2017 17:00 1 approved Approved

1412 Chennai 230 KV SPKoil lines 230 KV Kalpakkam-Echur feeder Insulator Replacement work Possible Sat, 29-Apr-2017 10:00 Sat, 29-Apr-2017 17:00 1 approved Approved

Due to Kayathar TUTICORIN -SIPCOT On 110 KV Sipcot- Eppodumvendran Feeder  During the L.C period No SS will be affected, 110KV loads will be radially fed from 1413 Madurai 110 KV For monthly maintenance works. POSISBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 Auto LC and Approved 230 KV breaker with CT's only. other end.      KDKRI Bus LC 110KV Papanasam-Servalar#2 Breaker with Present PWd Demand is 200C/S.During the LC period, the servalar Machine is under After s/d of SVLR 1414 Madurai 110 KV ABAN For carry out Monthly Maintenance work POSSIBLE Sat, 29-Apr-2017 10:00 Sat, 29-Apr-2017 12:00 1 Approved CT stand by condition. Hence no ss will be affected please. m/c 1auto II&III Will be Out of Service Auto I Will Cater the Present SS Load, 389 mA, 389 Approved Subject to 1415 Madurai 230 KV KODIKURICHY 230 KV On 230KV Bus Section II Monthly maintenance work mB will be kept at open condition.2230kvAmuthapuram I & II # Will be radial fed from POSSIBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 sub to wind gen. load condition Other End.otherwise the Auto II load TRANSFERRED to the tie breaker. subject to transfer For monthly maintenance of Breaker,CT and Line During the LC period 110KV Anthiyur feeder will be fed through 110KV Thalavaipettai 1416 Erode 110 KV ANTHIYUR 230 KV 110KV Anthiyur feeder breaker and CT only. possible Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 15:00 1 to thalavaipettai Approved switch. feeder.Hence no SS will be affected. feeder

Feeder Breaker with CT and Line side AB Switch During the LC period feeder Radial from Theni SS up to Markayankottai SS. 110 KV AB 1417 Madurai 110 KV PERIYAR 110 KV PERIYAR - THENI -III FEEDER POSSIBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 13:00 1 Sub to wind gen Approved Annual Maintenance work. Switch towards Periyar kept open at Markayankottai SS. NO SS will be effected.

On 110KV Papanasam-Servalar II feeder For tree cleareance work and jumper bolt During the LC period,I) Servalar powerhouse generation will be shutdown condition. ii) After s/d of SVLR 1418 Madurai 110 KV KODIKURICHY 230 KV POSSIBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 Approved entire line. rectification work at location No. 9 R phase EE/O Papanasam has also applied for monthly maintenance work. m/c

HV Breaker III will be in service condition, Hence there will be no interruption of supply to 1419 Erode 400 KV Salem 400 KV Monthly Maintenance Work possible Sat, 29-Apr-2017 8:00 Sat, 29-Apr-2017 14:00 1 occ approved Approved BREAKER, & Its SWITCHES 400 / 110 KV Auto transformers III.

During the LC period 110KV Penna - Kavanoor feeder will be in service . Hence, there is 1420 Madurai 110 KV VALUTHUR 230 KV 110KV Valuthur Penna feeder entire. Tree cutting work POSSIBLE Sat, 29-Apr-2017 10:00 Sat, 29-Apr-2017 17:00 1 0 Approved 'no' interruption in power evacuation.

NALLAPPANAYAKANPA 110KV NALLAMANAICKENPATTI FEEDER DURING THE L.C PERIOD 110KV NALLAMANAICKENPATTI SS WILL BE AVAILING 1421 Madurai 110 KV FOR MONTHLY MAINTENANCE WORK. POSSIBLE Sat, 29-Apr-2017 10:00 Sat, 29-Apr-2017 14:00 1 0 Approved TTY 230 KV BREAKER WITH C.T AND LINE ISOLATOR. TOTAL SHUT-DOWN ON THAT DAY.NO SS WILL BE AFFECTED.

No interruption to any SS. All other feeders at KGTPS plant and Kadalangudy SS will be 1422 Madurai 110 KV KADALANGUDI 230 KV 110KV Kadalangudy- KGTPS feeder entire Line inspection and rectification work. POSSIBLE Sat, 29-Apr-2017 10:00 Sat, 29-Apr-2017 16:00 1 0 Approved in tied condition.

No interruption to any SS. 110KV Sakkotai and Urban SS proposed to shutdown. All other 1423 Madurai 110 KV KADALANGUDI 230 KV 110KV KGTPS- Kumbakonam feeder entire For Line inspection and rectification work POSSIBLE Sat, 29-Apr-2017 10:00 Sat, 29-Apr-2017 16:00 1 0 Approved feeders will be in tied condition at KGTPS plant.

On 1)110KV KKDI # Bkr & Ct's 2) 110KV During the L.C Period the 110KV KKDI SS under TSD. Hence there will be No interruption 1424 Madurai 110 KV KARAIKUDI 230 KV 1)For Monthly Mtc work.2)For Tree Cutting work. POSSIBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 0 Approved KKDI # Entire. of Supply.

subject to the PALLAKAPALAYAM 230 feeder being kept 1425 Erode 230 KV 110KV Barrage IV Feeder CT,Breaker Monthly maintenance work Urachikotai 110KV SS Total shutdown on that day and Radially fed from another end possible Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 Approved KV radial from bph 4 end

110KV TNI-PYR III # ( SEC BETWEEN LINE MONTHLY MTCE AND PREMONSOON NO INTERRUPTION TO ANY SS .LINE UPTO MGKOTTAI SS WILL BE RADIAL FROM 1426 Madurai 230 KV then I 230 KV POSSIBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 Sub to wind gen Approved M.G.KOTTAI AND PYR PH) INSPECTION WORKS THENI SS

110 KV KGTPS-KADALANGUDI FEEDER ANNUAL 110 KV KGTPS-KADALANGUDI FEEDER RELAY TESTING WORKS BY During the LC period there is no interruption of supply to any ss since110KV Sakkottai SS 1427 Madurai 110 KV KUTTALAM BREAKER WITH ENTIRE LINE AT BOTH AEE/P&C/THIRUVARUR AT BOTH END.BREAKER POSSIBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 0 Approved and 110KV Urban SS Kumbakonam are availing total shutdown. END. TESTING WORKS AND OTHER MAINTENANCE WORKS IN ISOALTORS AT KGTPS END. 110 KV KGTPS-KUMBAKONAM RADIAL BREAKER TESTING WORKS AND OTHER During the LC period there is no interruption of supply to any ss since110KV Sakkottai SS 1428 Madurai 110 KV KUTTALAM FEEDER BREAKER WITH ENTIRE LINE AT MAINTENANCE WORKS IN ISOALTORS AT and 110KV Urban SS Kumbakonam are availing total shutdown.110 KV KGTPS- POSSIBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 0 Approved BOTH END. KGTPS END. Kadalangudi feeder is availing LC at both ends on the same day.

RENGANATHAPURAM 1429 Madurai 230 KV 230KV TBC breaker Monthly Maintenance works Already TBC Breaker is in standby condition POSSIBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 14:00 1 0 Approved 230 KV

A) 110 KV KAVANOOR-PARAMAKUDI # BR. ILYNGDI AND MRVMNGLM LOADS TO BE TRD. TO 110 KVNR-MMDU # AND KEPT IN & C.T. B) 110 KV KAVANOOR- MONTHLY MAINTENANCE WORKS AND LINE 1430 Madurai 110 KV KAVANOOR 230 KV TIED CONDN. PARAMAKUDI SS UNDER TOTAL SHUTDOWN; L.R. -13.5 MW; POSSIBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 0 Approved PARAMAKUDI # SEC. BET. KAVANOOR MAINTENANCE WORKS ACE/OPN/MDU APPROVAL AND PARAMAKUDI DURING THE LC PERIOD THE POWER TR4 LOADS WILL BE FED FROM OTHER 1431 Madurai 230 KV UDAYATHUR 230 KV 230KV POWER TR4,HV&LV BREAKER. MONTHLY MAINTENANCE WORK POSSIBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 14:00 1 Sub to wind gen Approved POWER TRS

During the LC period, (1) 110KV OKM-TDLR I or II feeder loads will be transferred to 230 subject to the OTHAKKAL MANDABAM 230/110 KV Auto Transformer-I (HV & LV for annual relay testing work by GRT wing and 1432 Erode 230 KV KV TDLR SS.(2) The remaining two Auto Transformers are in service to cater the SS possible Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 other auto trs Approved 230 KV Breakers, CTs & LAS) monthly maintenance works. loads.Hence, No SS will be affected. loading limit During the LC period,(1) 110KV Peedampally SS loads will be transferred to 230KV OTHAKKAL MANDABAM 110 KV OKM-Sulur # section between 230KV subject to the 1433 Erode 110 KV for P.M.I works by lines/TDLR wing. Arasur SS.(2) Supply interruption to L&T EHT Service.(3) 110KV Edayarpalayam SS fed possible Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 14:00 1 Approved 230 KV OKM SS and 110KV Edayarpalayam SS. transfer of loads from 110KV OKM-Negamam II feeder of 230KV OKM SS.Hence, No SS will be affected. all the feeders are 230 KV MYVADI - 230 KV BUS COUPLER 1434 Erode 230 KV Udumalpet 400 KV MONTHLY MAINTENANCE WORK MYVADI END ONLY possible Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 connected with Approved BREAKER both the bus During the Period of Shut down the 110KV Sirungattur SS (30 MW)and 110KV 110KV Arani - Sirungattur Feeder Breaker For monthly maintenance work,CT and Isolator Bolt 1435 Chennai 110 KV ARNI 230 KV Mambakkam SS (12 MW) are availing total shut down. Hence there will be no interruption Possible Sat, 29-Apr-2017 09:00 Sat, 29-Apr-2017 14:00 1 0 Approved and 110KV CT's with Isolators. nut Replacement work. of Supply. 110KV KAYATHAR-K.G.PATTI FEEDER DURING THE LC PERIOD,I.PERUMALPATTI ss WILL BE RADIALLY FED FROM sub to load 1436 Madurai 110 KV KAYATHAR 230 KV SECTION B/W PERUMALPATTI & 1)Line inspection and rectification work K.G.PATTI,II.KARIVALAMVANTHANALLUR SS WILL BE RADIALLY FED FROM POSSIBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 condition and wind Approved KARIVLAMVANTHANALLUR KAYATHAR HENCE NO SS AFFECTED gen During the period of LC 1)The 110KV Sirungattur SS (30 MW) availing Total SD2)The Monthly Maintenance work, HV II Breaker Monthly 230/110KV Auto Transformer No II,HV II 110KV Mambakkam SS (12 MW) availing Total SD3)230/110KV Auto-Transformer-II off 1437 Chennai 230 KV ARNI 230 KV Maintenance work, 230 KV CTs and 230KV Isolators Possible Sat, 29-Apr-2017 09:00 Sat, 29-Apr-2017 14:00 1 0 Approved Braeker,230KV CTs,110KV LV II Breaker condition4)230/110KV Auto-Tansformer-I & III will be in service and Catering the station Bolt Nuts replacement work loads.Hence there will be no interruption of supply subject to the 1438 Erode 110 KV UDUMALPET 230 KV 110KV CAPACITOR BANK II ENTIRE FOR MONTHLY MAINTENANCE WORKS NO FEEDERS WILL BE AFFECTED DURING THE LC PERIOD approved Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 voltage profile in Approved the grid

Sunguvarchatram 400 1439 Chennai 110 KV 110KV SVC - Palayaseevaram # entire for monthly maintenance work During the LC period the 110KV SVC - Palayaseevaram # will be out of service To be discuss Sat, 29-Apr-2017 09:00 Sat, 29-Apr-2017 17:00 1 0 Approved KV

1. During the LC period , 110 KV SMPM- Srirangam # tie opened at 230 KV SMPM SS and radially fed from230KV Trichy Auto SS. 2. 110 KV SMPM-Trichy Grid # tie opened and radial from 110KV Trichy Grid SS. 3. 110 KV SMPM-KKDY # 2 tie opened at 230 KV SMPM SS and radial from110KV KKDY SS 4. 110 KV Musiri # will be back fed thro'110 KV KKDY -Perambalur II # fed from KKDY 110KV SS by closing ABS.2, 3 & Musiri Monthly Maintenance Work & to check the tightness sub to load 1440 Madurai 110 KV SAMAYAPURAM 230 KV 110KV SOUTHERN BUS ONLY Breaker at 110 KV T.Pet SS. 5. 110 KV Musiri # Breaker at 230 KV SMPM SS will be in POSSIBLE Sat, 29-Apr-2017 10:00 Sat, 29-Apr-2017 17:00 1 Approved of bolts and nuts. condition H/T condition and bus & Line Isolator kept opened & Locked. 6. 110 KV Bus isolator No. 29 BS at 230 KV SMPM SS will be kept opened. 7. Auto Tr. I HV/LV Breaker in H/T condition & Isolators in open condition. 8.Auto Tr. II 100 MVA, 110 KV Siruganur #, 110 KV KKDY # 1 in 110 KV Northern Bus will be in service. 9. No interruption to any 110 KV SS. Necessary concurence obtained from EHT consumer in 110 KV Musiri # (Arise)

sub to wind gen 230/33KV PowerTransformer-III,HV&LV For monthly maintenance & GRT Annual Relay During the LC Period PowerTransformer-III willnot beinservice.PowerTransfomer-I&II 1441 Madurai 230 KV SANKANERI 230 KV POSSIBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 14:00 1 and no blocking of Approved Breaker,CTs only. Testing purpose. willbe Carried out the EntireLoad. wind gen

karuppur ss tsd Subject to 110 KV K.R.Thoppur Feeder - I Breaker CT's 110 KV K.R.Thoppur feeder - I will be radially fed from other end. 110KV Karappur SS will 1442 Erode 110 KV SALEM AUTO 230 KV Monthly Maintenance work. postponed Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 scheduled for EE/SLDC/Erode and line Isolators. be availing total shutdown. There will be no interruption to any SS or feeder. 27.04.2017 approval

During the LC period there will be no supply in 230KV Bus Coupler only. hence no 1443 Madurai 230 KV kayathar230kv 230KV Bus Coupler only Monthly Maintenance work POSSIBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 0 Approved substation affected.

110 KV Dharmapuri SS Availing total Shutdown Expected Load Relief : 24 MW hence KARIAMANGALAM 230 1.110 KV Dharmapuri feeder breaker, CTs Carryout Monthly SS Maintenance works by subject to 1444 Erode 110 KV there is no interruption of power supply and 110 KV Adhiyamankottai SS Feed through possible Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 14:00 1 Approved KV and Line Switch maintenance dharmapuri ss tsd 110 KV Ramiyanahalli feeder from 230 KV Karimangalam SS.

the lc will be 1. IT IS EXPECTED THAT THE WIND GENERATION WILL BE IN MODERATE LEVEL2. issued on priority HENCE, 230KV MYVADI- I & II # will cut off,3. 110KV PETHAPPAMPATTY # WILL BE if the condition Subject to For tightness checking of all clamps and Alignment 1445 Erode 230 KV PONNAPURAM 230 KV 230 KV Northern Bus Entire KEPT RADIAL FROM 230KV UDT SS UP TO THIS END4. 110KV THUNGAVY # WILL postponed Sat, 29-Apr-2017 10:00 Sat, 29-Apr-2017 17:00 1 permits on that EE/SLDC/Erode of M-I Isolater Switches. BE KEPT RADIAL FROM 230KV UDT SS UP TO THIS END 5. Auto Tr I&III Will be cut day or on any day approval off, as the Loads will be with in the limit of other Auto Tr.6. Hence no SS will be affected. when the wind generation is adequate 1,Total shutdown has been approved by CE/D/Vellore vide Memo. No.:CE/D/VLR/EE/AEE/Gl/ F. Shut down/ D. 142 /2017, Dt:21.03.2017 and 29.04.2017 ---Auto Transformers No. I & For replacing the defective surge monitors in 230 SE/D/Tirupatture vide Memo.No:SE/TEDC/TPR/ Gen / AE / F.Shutdown/D.3287/17, VINNAMANGALAM 230 1446 Erode 230 KV 110KV Ambur # & 110KV VNM SS (GC ) /110 KV LAS and for carrying out routine monthly dt:21.03.2017.2,3,During the totalshutdown on 29.04.2017 ,there will be no supply to Possible Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 14:00 1 0 Approved KV maintenance works. following 110/11 KV sub station,1) Anaicut SS,2) Pakkam SS, 3)Vinnamangalam (GC) SS ,4)Ambur SS, 5)Somalapuram SS,6) Vadakathipatty SS and the Valathur Railway Traction loads will be tranfered 230 KV Thiruvalam SS.

1) For monthly maintenance works by the 230 KV Thanjavur - PPN feeder, Breaker, CT, During the LC period,1) all other 230 KV feeders will be in tied condition,2) no supply 1447 Madurai 230 KV THANJAVUR 230 KV AEE/Mtce/Thanjavur,2) For carrying out premonsoon POSSIBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 0 Approved CVT. interruption to any SS. inspection works by the AEE/Lines/Thanjavur. 230 KV TBC breaker and 230 KV Transfer To carryout Monthly maintenance on equipment by During LC period 1) All 230 KV feeders and Auto transformers will be in service2) No 1448 Erode 230 KV PALLADAM 230 KV possible Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 idle breaker Approved Bus entire AEE/maintenance/palladam other Sub Station will be affected

230KV AUTO TRANSFORMER 1,2,3 AND 1449 Erode 230 KV KUNDAH PH2 FOR MONTHLY MAINTENANCE WORK SF6 BREAKER OFF IN CONDITION TOP AND BOTTOM BUS OPEN IN CONDITION 0 Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 SLDC /Erode Approved ITS ACCESSIORIES

1450 Chennai 110 KV THIRUVALAM 230 KV For EHT Line Maintenance Works. Anicut SS to 110 KV V.Patty SS.ii. The 110KV Anicut SS, 110KV V.Patty are availing Possible Sat, 29-Apr-2017 09:00 Sat, 29-Apr-2017 14:00 1 0 Approved Total Shutdown Hence there will be no interruption of supply please. (a) 110 KV K.G. Patti - Kayathar feeder (a) During the LC Period 110 KV Perumal Patti SS will be radially fed from 110 KV section between 110 KV Perumal patti SS ANUPPANKULAM 230 (a) For replacement of flash over disc at Loc. No. 6, Kayathar SS and 110 KV Mudangiar SS & Seithur SS will be under Total shut down (b) 1451 Madurai 110 KV and 110 KV Mudangiar SS. (b) 110 KV POSSIBLE Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 0 Approved KV 7 & 21. (b) Tree cutting works. During the LC period 110 KV Sangarankoil SS will be radially fed from 110 KV Kayathar Suruliyar - Kayathar feeder section between SS. Hence no ss will be affected. 110 KV Sangarankoil SS and Suruliyar PH

1452 Chennai 230 KV VILLUPURAM 230 KV 230KV Acharapakkam # For monthly maintenance works Other 230KV feeders will be in service (For tightening of jumpers between Loc 210-189. Possible Sat, 29-Apr-2017 09:00 Sat, 29-Apr-2017 17:00 1 already Approved DURING THE PERIOD OF SHUTDOWN 1)110KV WESTERN BUS,100MVA AUTO TRANSFORMER-II ,110KV Siruseri-II#,110KV Sholinganallur#,110KV Mambakkam# will Subject to CBD Combined with GCC 1453 Chennai 110 KV SIRUSERI 230 KV 110 KV Western Bus & 110KV Siruseri II # Maintenance work To be discuss Sat, 29-Apr-2017 10:00 Sat, 29-Apr-2017 17:00 1 not be inservice. 2)The 2) Idley charged 110KV Siruseri-II#,110KV Mambakkam# will not concurrence work be inservice.3)110KV Sholinganallur # load will be transferred to 230KV KITS PARK SS.

Subject to CBD 1454 Chennai 110 KV Kadaperi 230kv 110 kv korattur-II Feeder FOR QUARTERLY MAINTENANCE WORK 1.110 kv Korattur-II # Will be radial from korattur ss end Possible Sat, 29-Apr-2017 09:00 Sat, 29-Apr-2017 12:00 1 Approved concurrence

230KV KPH3 to Karamadai Feeder Tower No:73 to subject to the load 1455 Erode 230 KV KUNDAH PH3 230KV KPH3 to Karamadai Feeder 82. Pre monsoon inspection work and maintenance Bus and line both end open condition earth switch closed condition. possible Sat, 29-Apr-2017 9:00 Sat, 29-Apr-2017 17:00 1 Approved condition existing work.

During the above shutdown period 100MVA Auto transformer I and 80MVA auto Subject to CBD 1456 Chennai 230 KV KITS 230 KV 100MVA Auto transformer III For monthly maintenance works transformer -II will be in service feeding the entire SS loads except 110KV Veerapuram # Possible Sat, 29-Apr-2017 10:00 Sat, 29-Apr-2017 17:00 1 Approved concurrence which will be in back charged condition from 230KV Veerapuram SS

Programmed on 1457 Madurai 110 KV KODAIYAR PH2 110KV bus LC LBB commissioning work P.H-I & II machine will be shut down.No SS will be affected. POSISBLE Sun, 30-Apr-2017 9:00 Sun, 30-Apr-2017 17:00 1 Approved sunday

Possible with Subject to load 1458 Chennai 230 KV KORATTUR 230 KV 100MVA Auto Transformer - I general Maintenance work 100MVA Auto Transformer - II & III CBD Sun, 30-Apr-2017 09:00 Sun, 30-Apr-2017 17:00 1 Approved condition concurrence

1459 Chennai 230 KV KORATTUR 230 KV 230 KV Athipet- Mosur feeder Jumper Tightness at Various location All other feeder will be in services Possible Sun, 30-Apr-2017 08:00 Sun, 30-Apr-2017 17:00 1 0 Approved

Sunguvarchatram 400 1460 Chennai 110 KV 110KV SVC - Vallam vadakal # entire for monthly maintenance work During the LC period the 110KV SVC - Vallam vadakal # will be out of service To be discuss Sun, 30-Apr-2017 09:00 Sun, 30-Apr-2017 17:00 1 0 To be discuss KV

During the period of shutdown1) 100 MVA Auto Transformer II will be inservice2) 100KV Possible with AnnaNagar feeder loads to be transferred to 230KV Korattur SS feeding3) 110KV Cooks 1461 Chennai 230 KV KILPAUK 230 KV 100MVA Auto Transformer I Routine Maintenance work CBD Sun, 30-Apr-2017 09:00 Sun, 30-Apr-2017 16:00 1 0 Approved Road feeder tie to be opened at kilpauk SS end & 110KV Cooks Road SS will be radially concurrence fed by BBGTPS

110 KV Kayathar - Kodikurichy # breaker with Approved subject to 1462 Madurai 110 KV KAYATHAR 230 KV For Monthly maintenance work During the LC period other end also avails LC. Hence, No ss affected. POSSIBLE Sun, 30-Apr-2017 9:00 Sun, 30-Apr-2017 17:00 1 sub to wind gen CT only wind Generation

GENERATI UNIT-V GENERATTOR SF6 BREAKER, 1463 Erode NG KUNDAH PH2 POWER TRANSFORMER AND ITS FOR MONTHLY MAINTENANCE WORK SF6 BREAKER OFF IN CONDITION TOP AND BOTTOM BUS OPEN IN CONDITION 0 Sun, 30-Apr-2017 9:00 Sun, 30-Apr-2017 17:00 1 SLDC/Erode Approved STATIONS ACCESSIORIES

110KV PH2 to Thudiyalur Feeder Tower No:34 to 51. subject to the load 1464 Erode 110 KV KUNDAH PH3 110KV PH2 to Thudiyalur Feeder Pre monsoon inspection work and maintenance Bus and line both end open condition earth switch closed condition. possible Sun, 30-Apr-2017 9:00 Sun, 30-Apr-2017 17:00 1 Approved condition existing work. Possible with 1) Auto Tr.-1 LC - Auto 2&3 will be in service 2) Auto Tr.-2 LC - Auto 1&3 will be in Subject to load 1465 Chennai 230 KV THARAMANI 230 KV 100 MVA Auto Tr. 1,2 & 3 ( one by one) Qtrly. Mtce. work CBD Sun, 30-Apr-2017 09:00 Sun, 30-Apr-2017 17:00 1 Approved service 3) Auto Tr.-3 LC - Auto 1&2 will be in service condition concurrence