Page 1 of 12 NTPC Limited ( A Government of Enterprise ) SSC - ER-I(Barh) Project P.O. BARH BARH PATNA Bihar- 803213, India Telephone No. : 06132-240011/12/13 Fax No. : 06132-240014

LST No : 10020385084 CST No : 10020385181 TIN No : 10020385084

ENQUIRY TO VENDORS AS PER ATTACHED ANNEXURE

NIT Number : 9900195917/035/1028 NIT Date : 22.02.2020 EMD Amount in INR : Not Applicable EMD Amount in US$ : Not Applicable Bid Opening Date : As published at GepNIC Site.

Subject: Supply & installation of roof top solar system for computer room of Vananchal college NTPC NKSTPP.

Dear Sir, Tender is being invited on behalf of NTPC Limited for the subject work. Thanking You,

For & behalf of NTPC Limited

K S PRATAP Sr. Manager(SSC-C&M)

Registered Office: NTPC Bhawan, Core-7, Scope Complex, Institutional Area, Lodhi Road, New -110003 Phone No. -(011)24360100, Fax No. -(011)24361018. Website: www.ntpc.co.in

Page 2 of 12 NTPC Limited ( A Government of India Enterprise ) NIT No.: 9900195917/035/1028

(Contracts Services) (Bid Proposal Sheet) Name of Work: Supply & installation of roof top solar system for computer room of Vananchal college NTPC NKSTPP.

Delivery Address: North Karanpura Super ThermalPower Project POST-TANDWA DISTRICT-CHATRA Jharkhand 825321 India 06132-240011/12/13 06132-240014 SI No. Code Description Unit Quantity Rate Amount Long Text 10 supply of material associated with work ####### ####### #########

10.10 10 KW Solar PV Panels W Yes 10,000 10.10 Rate In Words :

10.20 Roof top support structures (per watt) W Yes 10,000 10.20 Rate In Words :

10.30 Battery(including battery rack) NO 24 Yes 10.30 Rate In Words :

10.40 10 KW Solar Inverter with rack NO 1 Yes 10.40 Rate In Words :

10.50 Solar DC cables of 1C 1.5 sqmm M 100 Yes 10.50 Rate In Words :

10.60 Solar DC cables of 1C 4sqmm M 50 Yes 10.60 Rate In Words :

10.70 Solar DC cable of 1C 50 sqmm M 25 Yes 10.70 Rate In Words :

10.80 Cable 4Cx10SqMM M 10 Yes 10.80 Rate In Words :

10.90 Cable 3C*10 sqmm M 40 Yes 10.90 Rate In Words :

10.100 cable 3C2.5 sqmm M 120 Yes 10.100 Rate In Words :

10.110 Array Junction Box (IP65) NO 5 Yes 10.110 Rate In Words :

10.120 Main Junction Box (IP65) NO 1 Yes

Page 3 of 12 NTPC Limited ( A Government of India Enterprise ) NIT No.: 9900195917/035/1028

10.120 Rate In Words :

10.130 Lightning Arrester NO 2 Yes 10.130 Rate In Words :

10.140 Earth strip M 50 Yes 10.140 Rate In Words :

10.150 3m GI pipe M 12 Yes 10.150 Rate In Words :

10.160 TPN MCB (40A) NO 1 Yes 10.160 Rate In Words :

10.170 RCCB (40A, 30mA sensitivity) NO 1 Yes 10.170 Rate In Words :

10.180 SP MCB (10-25A) NO 12 Yes 10.180 Rate In Words :

10.190 Panel Board 4+4+3 way, 3-Ph NO 1 Yes 10.190 Rate In Words :

UOM Legends:- AU - Activity unit W - Watt NO - Number M - Meter

(Signature of Buyer's Representative) ( Signature of Supplier/Contractor)

Page 4 of 12 NTPC Limited ( A Government of India Enterprise ) NIT No.: 9900195917/035/1028

SI No. Code Description Unit Quantity Rate Amount Long Text 20 INSTALLATION AND COMMISSIONING ####### ####### ######### 20.10 Installation and commissioning W 10,000 20.10 Rate In Words :

UOM Legends:- AU - Activity unit W - Watt GRAND TOTAL in Figure:

GRAND TOTAL in Words:

(Signature of Buyer's Representative) ( Signature of Supplier/Contractor)

Page 5 of 12 NTPC Limited ( A Government of India Enterprise ) NIT No.: 9900195917/035/1028

S COPE OF WORK

00010:supply of material associated with work Installation of Solar PV panel on Rooftop of Vananchal college to give uninterrupted power supply to computer room .

Total Estimated Solar PV Capacity: 10KW

SCOPE OF WORK & TERMS CONDITIONS :

The Solar Photo Voltaic (PV) installation on Rooftop of Vananchal college building shall be carried out preferably on a shadow free area in such a way that the generation is maximized & suitable for installation of Solar PV power plants. However, the bidder is advised to visit the plant to ascertain site conditions prior to bidding in order to avoid any uncertainty or ambiguity later.

Material handling / lifting equipment shall be arranged by agency and there should be no any dependency on NTPC.

1. SCOPE OF WORK

Supply, installation, material handling, coverage of insurance, testing and commissioning of the system

All materials, manpower, scaffolding materials, machinery tools and tackles, transportation & loading/unloading, packaging and unpacking, safe storage etc. shall be provided by Contractor. Scope shall cover all type of transportation of materials inside the working site and man power etc. required to execute and complete the work. The contractor shall also provide all required safety PPEs to all its workers that would be mobilized for installation purpose and has to adhere to all safety regulations strictly. Moreover, the area at which the work is executed shall be cleaned properly and cleared off all debris to the satisfaction of NTPC representative post completion of erection activities. Bidder to provide defect liability period of the full system shall be one year from the date of successful completion of system. Take suitable action to prevent modules getting defaced. Bidder to dispose of the packing material, surplus items, unused materials, waste etc. generated during EPC at location(s) identified by NTPC.

2. TECHNICAL SPECIFICATIONS : Solar PV system shall consist of following equipment/components. I. Solar PV crystalline modules II. Module Mounting Structures (MMS) and Civil Structures III. PCU / String Inverter IV. Cables V. Earthing and lightning protections VI. Conduits, pipes and accessories wherever required VII. Suitable JBs, Panel DB, TPN MCB, RCCB and SP MCBs. VIII. All hardwares, nut, bolts, plain/spring washers and clamps required for completion of work shall be supplied free of cost.

3. Solar PV modules

The Solar PV modules must conform to the latest edition of IEC 61215 / IS14286 for Crystalline Silicon Terrestrial PV Modules design qualification and type approval and from MNRE approved source. The capacity of each of the solar module shall not be less than 200 Wp and no negative tolerance from quoted power rating on solar module shall be allowed.

4. MODULE MOUNTING STRUCTURE (MMS)

The Module Mounting Structure support and fixation arrangement shall be designed in such a way that it does not damage or deteriorate the strength, durability and performance of the roof including water proofing carried out on the roof. MS type frames and the complete leg assemblies of the array structures and fasterners shall be Hot Dip Galvanized.

Page 6 of 12 NTPC Limited ( A Government of India Enterprise ) NIT No.: 9900195917/035/1028

5. CABLES AND CONNECTIONS

The cables used in the system should be ISI marked PVC or XLPE insulated FRLS Copper conductor. Cables of various sizes as per load requirement for connecting all the modules / arrays to Array and Main Junction Boxes and from Main Junction Boxes to inverter. Cables for use at the DC-side of PV system shall meet the requirements of TUV standard 2 PfG 1190/5.18 or EN-50618 or other equivalent standard. Suitable rigid conduits shall be provided for cables connecting Solar PV array with Inverter. All cable entry to and from Inverter must be able to prevent access of rodents, termites and other insects into the Inverter. All electronic connections of inverter should be properly terminated, soldered and/or sealed from outdoor and indoor elements. 5.7 Conduits,insulating tapes nut-bolts,connector,clips,fastener and all other accessories to be provided by bidder.

6. PCU / STRING INVERTOR PCU / String Inverter should be 3-phase inverters providing 415V at 50Hz frequency.

7.PROTECTION

The system should be provided with all necessary protections like Earthing & Lightning. Metallic frame of all electrical equipment shall be earthed by two separate and distinct connections to earthing system, each of 100% capacity.

8. BALANCE OF SYSTEM (BOS) ITEMS/ COMPONENTS

The contractor shall construct four nos of earth pits with 3m long GI pipe treated with salt and charcol and with masonary enclosure. Two pits shall be for LA and two pits for earthing of equipment.

Battery racks and inverter rack shall be painted with one coat of red primer and one coat of GI/Al paint

All cables shall be properly dressed, tagged and tied with self interlocking type nylon tie wherever required.

9. COMMISSIONING OF ROOFTOP SOLAR PV

Individual solar rooftop location is deemed to be commissioned after the completion of all the facilities (COF) pertaining to scope of work of that rooftop location.

10. WARRANTY OF ROOFTOP SOLAR PV (A) Solar PV modules used in plant(s)/ system(s) must be warranted by manufacturer for their output peak watt capacity, which should not be less than 90% at the end of 10 years and 80% at the end of 25years. All the mechanical mounting system and structures along with PCU / String Inverters of the Solar PV plant must be warranted against any manufacturing, design and installation defects for a minimum period of one year from COF of plant. (B) Security against Solar PV Modules Warranty as per GCC.

TERMS AND CONDITIONS :

A) Schedule of Activities: The bidder has to complete the work within 3 months from the date of award of purchase order

B) Payment Terms:

1) Supply Cost a) 60% of payment against supply of main equipment shall be made after receipt of material at site and on submission of relevant documents including Installation All Risk Insurance policy. b) 30% of payment against supply shall be made after commissioning of the entire system and its certification by the EIC. c) Further 10% of payment against supply shall be made post completion of facilities (COF) and certification of same by the EIC.

Page 7 of 12 NTPC Limited ( A Government of India Enterprise ) NIT No.: 9900195917/035/1028

2) E&C Cost (a) 90% of the E&C cost component shall be paid on pro-rata basis on completion of installation and commissioning of equipments; and on certification by the EIC for the quantum of work completed. (b) 10% on successful COF of the plant and certification of same by the Project Manager.

C) LD (Liquidated Damage): LD @ 0.5% of the contract price per week of delay subject to a maximum of 5% of total cost of contract.

D) The contractor has to maintain Installation All Risk Insurance during the contract period of the work and submit it to NTPC before start of work for acceptance.

E) SD shall be as per GCC of the contract.

F) Since the work is to be executed outside the Boundarywall of NTPC, the contract has to maintain sufficient watch and ward till handing over of the system.

Brand of materials to be supplied by bidder- Material : manufacturer 1. Solar Panels : Vikram Solar,Waree solar, Solar ,Luminous or equivalent MNRE approved source 2. Inverter : Delta,SMA,Good We,Luminous, ABB, Microtek, 3. Battery : Exide,Amaron,Luminous. 4. Cables,Wires : polycab,finolex,Havells.

5. TPN/MCB - C&S, Standard, Havells, L&T, Schneider 6. Panel DB - C&S, Standard, Havells, L&T, Schneider 7. Earth flats, GI pipe - ISI make

Page 8 of 12 NTPC Limited ( A Government of India Enterprise ) NIT No.: 9900195917/035/1028

SERVICE SPECIFICATION ------

S.No. Service Code Service Text Service Long Text

10.10 10 KW Solar PV Panels it consist toal 40 no of panels each having capacity of 250w or equivalent arrangement so that total capacity is 10KW.The arrangement of panel will be as per enclosed drawing.

10.20 Roof top support structures (per watt) Roof top support structures shall be hot dip galvanised MS type

10.30 Battery(including battery rack) For Two Hrs backup for 10KW load Tubular Gel#-VRLA 2V -250AH battery will be required. Batteries should be mounted on a rake

10.40 10 KW Solar Inverter with rack Solar# off grid hybrid inverter with MPPT: Process:DSP based PWM technology using IGBT. PV Input 48V, Annunciation: Multifunction LCD display for status /fault, Protection:Overload / Short circuit, Output over voltage, Battery low voltage. Voltage regulation: +/#- 1%. OUTPUT OF INVERTER- 3Ph# 50Hz, 415V with MPPT Mounting Rake of the inverter should be included

10.50 Solar DC cables of 1C 1.5 sqmm PVC Cu, Working voltage#]1KV DC, XLPE insulation sheathed with UV stabilised PVC ST2 compound#]Standard#]TUV 2pfg1169/ 08.2007. These cables will be used to connect Array to AJB

10.60 Solar DC cables of 1C 4sqmm PVC Cu, Working voltage#-1KV DC, XLPE insulation sheathed with UV stabilised PVC ST2 compound#-Standard#-TUV 2pfg1169/ 08.2007. Cable will be used to connect AJB-MJB

10.70 Solar DC cable of 1C 50 sqmm PVC Cu, Working voltage#-1KV DC, XLPE insulation sheathed with UV stabilised PVC ST2 compound#-Standard#-TUV 2pfg1169/ 08.2007. Cable to connect MJB to Inverter.

10.80 Cable 4Cx10SqMM PVC, 1.1KV# Armoured, Cu,Type:2XWY/2XFY.

10.90 Cable 3C*10 sqmm PVC, Stranded, Cu#1.1KV, unarmoured

10.100 cable 3C2.5 sqmm PVC, Stranded, Cu#1.1KV, unarmoured

Page 9 of 12 NTPC Limited ( A Government of India Enterprise ) NIT No.: 9900195917/035/1028

10.110 Array Junction Box (IP65) 5+5(IN), 1+1(OUT)50A With SPD IP 65 PROTECTION

10.120 Main Junction Box (IP65) 5+5(IN), 1+1(OUT)50A/250A With SPD Having IP65 protection

10.130 Lightning Arrester Copper Rod

10.140 Earth strip GI-25mm x 3mm

10.150 3m GI pipe GI#-40nb

10.160 TPN MCB (40A) 40A TPN MCB

10.170 RCCB (40A, 30mA sensitivity) RCCB (40A, sensitivity 30mA )

10.180 SP MCB (10-25A) Single pole MCB (10-25A) with breaking current capacity min. 9kA

10.190 Panel Board 4+4+3 way, 3-Ph pre-wired type panel DB with two nos earthing provisions, should be 4+3way type, (4 MCBs incomer,3 MCBs outgoing with neutral link)

Page 10 of 12 NTPC Limited ( A Government of India Enterprise ) NIT No.: 9900195917/035/1028 Bid Opening Date: 03.03.2020

S COPE OF WORK

00020:INSTALLATION AND COMMISSIONING Installation of Solar PV panel on Rooftop of Vananchal college to give uninterrupted power to computer room . Total Estimated Solar PV Capacity: 10KW

Installation and commissioning works include erection of module mounting structure, module interconnection, installation of all equipment, formation of string and arrays, DC and AC cable laying & termination, testing & commissioning of entire system and all associated works required to complete the work. Installation and Commissioning of Earthing and lightening system which includes earth pits, earth strip laying & lightening arrestor. Earth pit should be filled with mixture of charcoal and salt.GI pipe of earth pit should be bolted to earth strip with GI bolt. Solar panels should be oriented in such a direction to get the maximum insolation.

Page 11 of 12 NTPC Limited ( A Government of India Enterprise ) NIT No.: 9900195917/035/1028 Bid Opening Date: 03.03.2020

SERVICE SPECIFICATION ------

S.No. Service Code Service Text Service Long Text

20.10 Installation and commissioning

Page 12 of 12 NTPC Limited ( A Government of India Enterprise ) NIT No.: 9900195917/035/1028 Bid Opening Date: 03.03.2020

A NNEXURE

V ENDORS LIST

S.No. Collective No. / Vendor Details RFQ No.