Rec15 Al / Rec25 Al Rec Series Automatic Circuit Recloser

REC15_AL / REC25_AL REC SERIES AUTOMATIC CIRCUIT RECLOSER

TECHNICAL MANUAL

ISO 9001:2008 certiﬁcation ISO 14001:2004 certiﬁcation 2 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

This document is copyrighted and is intended for users and distributors of Tavrida Electric products. It contains information that is the intellectual property of Tavrida Electric and this document, or any part there of, should not be copied or reproduced in any form without prior written permission of Tavrida Electric.

is a trademark of Tavrida Electric and should not be reproduced or used in any way without written authorization.

Tavrida Electric applies a policy of ongoing development and reserves the right to change products without prior notice. Tavrida Electric does not accept any responsibility for loss or damage incurred as a result of acting or refraining from acting based on information in this Technical Manual.

Low voltage devices (recloser controller all types) meet the requirements of the EMC Directive 2006/95, the Low Voltage Directive 2004/108 3 TECHNICAL MANUAL

TABLE OF CONTENTS

1. INTRODUCTION ...... 7 1.1 General information ...... 7 1.2 Safety information ...... 7 1.2.1 Personnel competence ...... 7 1.2.2 Hazard statements ...... 7 1.3 Applicability ...... 7 1.4 Abbreviation ...... 8 2. PRESENTATION ...... 9 2.1 Product application ﬁeld ...... 9 2.2 Key beneﬁts ...... 9 2.3 Compliance ...... 9 2.3.1 Quality ...... 9 2.3.2 Reference standards ...... 10 2.3.3 Type test reports ...... 10 3. PRODUCT CLASSIFICATION ...... 11 3.1 General information ...... 11 3.2 Part numbering ...... 11 3.3 Marking ...... 15 3.4 Sealing ...... 16 3.5 Packaging ...... 17 4. TECHNICAL PARAMETERS ...... 19 4.1 Outdoor Switching Module parameters ...... 19 4.2 Sensors parameters ...... 21 4.3 Recloser Control Cubicle basic technical parameters ...... 22 5. DESIGN AND OPERATION...... 26 5.1 Design...... 26 5.1.1 Outdoor Switching Module (OSM) ...... 26 5.1.2 Protective tank ...... 27 5.1.3 Main contacts position indicator ...... 27 5.1.4 Current and voltage sensing ...... 28 5.1.5 Bushing extensions ...... 28 5.1.6 Vacuum circuit breaker ...... 30 5.1.7 Recloser control ...... 31 5.1.8 Recloser Control Cubicle ...... 31 5.1.9 Umbilical control cable...... 36 5.1.10 Control Panel Module (CPM) ...... 37 5.1.11 Recloser Control Module (RCM) ...... 37 5.1.12 Power Supply Filter Module (PSFM) ...... 37 5.1.13 Rechargeable Battery (BAT) ...... 38 5.1.14 Bluetooth Module (BTM) ...... 39 5.1.15 I/O Module (IOM) ...... 41 5.1.16 Provision for Remote Terminal Unit (RTU) ...... 42 5.1.17 Anti-condensation kit ...... 44 5.2 Operation ...... 45 5.2.1 Opening ...... 45 4 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

5.2.2 Closing ...... 45 5.2.3 Indication ...... 46 6. FUNCTIONALITY...... 47 6.1 Protection ...... 47 6.1.1 Overview ...... 47 6.1.2 Protection elements ...... 47 6.1.2.1 Source Detector (SD) ...... 47 6.1.2.2 Phase Overcurrent (OC) ...... 48 6.1.2.3 Earth Fault (EF) ...... 49 6.1.2.4 Phase and Earth Overcurrent Autoreclosing (AR OC) ...... 51 6.1.2.5 Loss of Supply (LS) ...... 55 6.1.2.6 Loss of Supply Autoreclosing (ARLS) ...... 55 6.1.2.7 Hot Line (HL) ...... 57 6.1.2.8 Sensitive Earth Fault (SEF) ...... 58 6.1.2.9 Sensitive Earth Fault Autoreclosing (AR SEF) ...... 59 6.1.2.10 Voltage Unbalance (VU) ...... 60 6.1.2.11 Current Unbalance (CU) ...... 61 6.1.2.12 Voltage Reclosing Control (VRC) ...... 61 6.1.2.13 Undervoltage (UV) ...... 63 6.1.2.14 Undervoltage Autoreclosing (AR UV) ...... 64 6.1.2.15 Overvoltage (OV) ...... 65 6.1.2.16 Overvoltage Autoreclosing (AR OV) ...... 65 6.1.2.17 Underfrequency (UF) ...... 66 6.1.2.18 Underfrequency Autoreclosing (AR UF) ...... 67 6.1.2.19 Overfrequency (OF) ...... 68 6.1.2.20 Overfrequency Autoreclosing (AR OF) ...... 68 6.1.2.21 Automatic Backfeed Restoration (ABR) ...... 69 6.1.2.22 Autoreclosing Timeout (ART) ...... 69 6.1.2.23 Cold Load Pickup (CLP) ...... 70 6.1.2.24 Close Condition Verifier (CCV) ...... 70 6.1.3 Fault locator (FL) ...... 71 6.2 Measurement ...... 73 6.2.1 Overview ...... 73 6.2.2 Inrush filter ...... 74 6.3 Communication ...... 75 6.3.1 Overview ...... 75 6.3.2 Personal Computer Interface (PCI) ...... 75 6.3.3 Telecommunication Interface (TCI) ...... 75 6.3.4 Digital input/output interface (IOI) ...... 75 6.4 TELARM Dispatcher Interface (TDI)...... 75 6.5 Indication ...... 77 6.5.1 Man-Machine Interface (MMI) ...... 77 6.6 Logging ...... 78 6.6.1 Logs ...... 78 6.6.1.1 Event log (EL) ...... 78 6.6.1.2 Malfunction log (ML) ...... 82 6.6.1.3 Load profile (LP) ...... 84

5 TECHNICAL MANUAL

6.6.1.4 Fault proﬁle (FP) ...... 85 6.6.1.5 Change messages (CM) ...... 85 6.6.1.6 Comms log (CL) ...... 87 6.6.2 Counters ...... 88 6.6.2.1 Protection counters ...... 88 6.6.2.2 Lifetime counters ...... 89 6.6.2.3 Log ﬁlling counters ...... 89 7. MOUNTING KIT ...... 90 7.1 Recloser mounting kits...... 90 7.1.1 Selection guide ...... 90 7.1.2 Technical parameters ...... 90 7.1.3 Packaging ...... 91 7.1.4 Mounting kit for installation onto single pole ...... 92 7.1.5 Mounting kit for installation onto A-pole and metal lattice tower ...... 93 7.1.6 Mounting kit for installation onto H-pole ...... 94 7.1.7 Mounting kit for installation of Recloser Control cubicle ...... 94 7.1.8 Installation ...... 94 8. ADDITIONAL EQUIPMENT...... 95 8.1 Voltage transformer (VT)...... 95 8.1.1 Overview ...... 95 8.1.2 Technical parameters ...... 95 8.2 Surge arresters (SA)...... 96 8.2.1 Overview ...... 96 8.2.2 Technical parameters ...... 96 8.3 Interface Test Set (ITS) ...... 97 8.3.1 Overview ...... 97 8.3.2 Technical parameters ...... 99 9. INSTALLATION GUIDE ...... 100 9.1 Unpacking...... 100 9.2 Acceptance and initial inspection ...... 100 9.3 Handling requirements...... 100 9.3.1 OSM handling ...... 100 9.3.2 RC handling ...... 101 9.4 Installation procedure...... 102 9.4.1 Required equipment ...... 102 9.4.2 OSM installation ...... 102 9.4.3 RC installation ...... 103 9.4.4 VT installation ...... 104 9.4.5 SA installation ...... 104 9.4.6 Telecommunications equipment installation ...... 104 9.5 Earthing ...... 105 9.6 Connection of primary circuits ...... 106 9.7 Connecting the RC5_3 to auxiliary supply ...... 107 9.8 Connecting the Umbilical control cable ...... 108 9.9 Dismounting procedure ...... 108 10. COMMISSIONING GUIDE...... 109 10.1 General information ...... 109 6 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

10.1.1 Power supply testing ...... 109 10.1.2 CPM testing ...... 109 10.1.3 Checking measurement coefﬁcients ...... 109 10.1.4 Recloser operation tests ...... 109 10.1.5 Checking phase sequences ...... 110 10.1.6 Main contact resistance test ...... 110 10.1.7 Primary current injection test ...... 110 10.1.8 Primary voltage injection test ...... 110 10.1.9 Secondary injection test with ITS ...... 110 10.1.10 Power frequency voltage test ...... 111 11. MAINTENANCE GUIDE ...... 113 11.1 General information ...... 113 11.2 Transportation ...... 113 11.3 Storage ...... 113 11.4 Disposal ...... 113 11.5 Warranty ...... 113 12. TROUBLESHOOTING GUIDE ...... 114 12.1 General information ...... 114 12.2 Troubleshooting ...... 114 12.3 Component replacement procedures ...... 124 12.3.1 RCM replacement ...... 124 12.3.1.1 Dismounting ...... 124 12.3.1.2 Installation ...... 124 12.3.2 CPM replacement ...... 124 12.3.2.1 Dismounting ...... 124 12.3.2.2 Installation ...... 125 12.3.3 PSFM replacement ...... 125 12.3.3.1 Dismounting ...... 125 12.3.3.2 Installation ...... 125 12.3.4 Battery replacement ...... 125 12.3.4.1 Dismounting ...... 125 12.3.4.2 Installation ...... 126 12.3.5 Battery sensor replacement ...... 126 12.3.5.1 Dismounting ...... 126 12.3.5.2 Installation ...... 126 12.3.6 OSM replacement ...... 126 12.3.7 RC replacement ...... 126 12.3.8 VT replacement ...... 126 12.3.9 SA replacement ...... 126 12.3.10 Telecommunication equipment replacement ...... 126 APPENDIX 1. TYPE TESTS ...... 127 APPENDIX 2. TCC ...... 131 APPENDIX 3. DIMENSIONS ...... 138 APPENDIX 4. WIRING DIAGRAMS ...... 144 7 TECHNICAL MANUAL

1. INTRODUCTION

1.1 General information Thank you for choosing this Tavrida Electric product. The Rec The Rec series automatic circuit recloser has been designed for series automatic circuit reclosers are designed for use on use as a stand-alone device, but can be easily integrated into overhead distribution lines as well as distribution substation distribution automation and remote control schemes using the applications for rated voltages of up to 27kV. built-in communications capability. The built-in user configurable distribution automation function can be used with or without the communication system and will reduce outage time and increase the profitability of your network. 1.2 Safety information The instructions in this manual are not intended as a substitute trained and experienced personnel who are familiar with the for competence in the use of the equipment described. equipment and with electrical safety requirements. Installation, use and servicing should only be carried out by 1.2.1 Personnel competence A competent technician has these qualifications: • Is trained and authorized to energize, de-energize, clear and ground power distribution equipment; • Is thoroughly familiar with the instructions given in this technical manual; • Is trained in the care and use of protective equipment such as flash clothing, safety glasses, face shield, hard hat, • Is trained in industry-accepted medium- and low voltage rubber gloves, hot-stick, etc. safe operating practices and procedures; 1.2.2 Hazard statements This manual may contain three types of hazard statements: WARNING: Indicates a potentially hazardous NOTE: Indicates important items of information situation that, if not avoided, could result in death or throughout the manual serious injury

CAUTION: Indicates a potentially hazardous situation that, if not avoided, could result in personal injury or equipment damage

1.3 Applicability Note that this manual is given as a reference only and cannot installation and operation of the device. For any further or more cover all variations of the equipment and processes being detailed information please contact your nearest TAVRIDA described. Neither can it cover all contingencies connected with ELECTRIC EXPORT Ofﬁce. 8 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

1.4 Abbreviation ABR Automatic Backfeed Restoration LED Light-emitting diode ANSI American National Standards Institute LP Load Profile AR A utoreclosing LS Loss of Supply protection element ART Autoreclosing timeout MCB Miniature circuit breaker BAT Battery ME Measurement element BF B olted Fault ML Malfunction Log BIL Basic Insulation Level MMI Man Machine Interface BS British Standard MPM Main Processor Module BTM Bluetooth Module OC Overcurrent protection element CC C ontrol Cable (Umbilical) OC1 Low set Overcurrent protection element for Delayed CCV Close Condition Verifier trips CLC Close Logic Control OC2 Low set Overcurrent protection element for Instantaneous trips CL C omms log OC3 High set Overcurrent protection element for CLP Cold Load Pickup Instantaneous trips CM C hange Messages OSM Outdoor Switching Module CPM Control Panel Module OF Over Frequency CT C urrent transformer OV Over Voltage CU C urrent unbalance PC Personal computer D Delayed PCI Personal Computer Interface DCE Data Communications Equipment PSFM Power Supply Filter Module DMS Data Management System PSM Power Supply Module DPS Door Position Switch RC Recloser Control Cubicle DTE Data Terminal Equipment RCIS RC Internet Server software EDR Enhanced data rate RCM Recloser Control Module EF Earth Fault protection element RMS Root mean square EF1 Low set Earth Fault protection element for Delayed RTC Real Time Clock trips RTU Remote Telecommunication Unit EF2 Low set Earth Fault protection element for Instantaneous trips SA Surge arrester EF3 High set Earth Fault protection element for SCADA Supervisory Control And Data Acquisition Instantaneous trips SD Source Detector EL Event Log SEF Sensitive Earth Fault FDIR Fault Detection, Isolation and Recovery SI Synchronization Indicator FL Fault Locator SMS Short Message Service GPRS General Packet Radio Service TEL Tavrida Electric GSM Global System for Mobile Communications TELARM Tavrida Electric Automated Relay Manager HL Hot Line protection element TCC Time-current curve I Instantaneous TCI Telecommunications Interface I/O Input/Output TD Time-definite IEC International Electrotechnical Commission TDI Telarm Dispatcher Interface IED Intelligent Electronic Device UF Under Frequency IEEE The Institute of Electrical and Electronics Engineers USB Universal Serial Bus IOI Input/Output Interface UV Under Voltage IOM Input/Output Module VRC Voltage Reclosing Control IP Ingress protection VT Voltage Transformer ISO International Organization for Standardization VU Voltage Unbalance ITS Interface test set ZSC Zone Sequence Coordination KIPTS Koeberg Insulator Pollution Test Station LAN Local Area Network LCD Liquid Crystal Display 9 TECHNICAL MANUAL

2. PRESENTATION

2.1 Product application field Reclosers can be applied in radial or loop overhead distribution The recloser can also be used at outdoor substations feeding lines. The main applications are: overhead distribution lines. It may be used as: • Clearing transient faults by performing autoreclosing; • Substation outgoing feeder with autoreclosing functionality; • Isolating sustained faults in the overhead line network; • Substation busbar coupler breaker with backfeed restoration capability; • Isolating sustained faults in a network where conventional protection coordination is not possible; • Substation switchgear incoming feeder breaker with overcurrent protection for busbar faults, undervoltage • Automatic backfeed restoration. protection for backfeed restoration purposes and interfaces for transformer protection. 2.2 Key benefits Tavrida Electric Rec series reclosers provide the following tap changer operations, network overload and over- or competitive advantages: under-generation. Ÿ Maintenance free Embedded Intelligent Electronic Device (IED), Remote Terminal Unit (RTU) and metering capability ensure that the The lifetime maintenance free Outdoor Switching Module Rec series reclosers are SCADA-ready with no additional (OSM) provides 30 000 rated current and 200 full rated short expenses. circuit CO operations. Ÿ Advanced user software Tavrida Electric Rec series reclosers are designed to keep utility expenses to a minimum over their entire lifespan. TELARM® user software provides exceptional management They are installed to significantly improve a network's tools for power quality, for protection and for fault simulation reliability key performance indicators and their use results along with advanced local and remote communications in a quick return on investment. ability. Ÿ Lightweight Ÿ Perfect solution for Smart Grids Tavrida Electric's light weight vacuum circuit breaker and Complex measurement system combined with IED and RTU robust aluminum tank result in a total weight of 68 kg for makes the Rec series recloser the perfect solution for Smart OSM15 rated 15.5 kV and 72 kg for OSM25 rated 27 kV, Grids. Tavrida Electric reclosers allow utilities to implement making it the most lightweight outdoor switching module on Smart Grid philosophies and deploy advanced self-healing the market. or fault detection, isolation, and restoration (FDIR) systems. As a result, shipment, handling, installation and Ÿ Environmentally friendly commissioning are fast and simple. The Tavrida Electric OSM is an air insulated outdoor circuit Ÿ Sophisticated measurements system breaker with a patented combined insulation that makes it the environmentally friendly - no oil or hazardous SF6 The OSM 15 and OSM25 are equipped with six combined despite its compact size. current and voltage sensors built into the bushings. This makes the Rec series reclosers ideal devices for self- An aluminum tank offers excellent protection against healing loop automation solutions. corrosion. UV resistant silicon rubber bushings are capable of withstanding temperatures ranging from -40 to +55°C and Ÿ Advanced control and protection provide excellent hydrophobicity. Tavrida Electric reclosers provide protection from various Design reliability is proven by the most severe climate and faults, including: short circuits, earth faults, high heavy pollution tests at the Koeberg Insulator Pollution Test impedance earth faults, broken wires, islanding, incorrect Station (KIPTS) in South Africa. 2.3 Compliance 2.3.1 Quality Tavrida Electric is certified to ISO 9001:2008 - The international standard for quality management system and ISO 14001-2004 - The international standard for environmental management system. 10 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

2.3.2 Reference standards Tavrida Electric Rec series reclosers meet all the requirements for outdoor use in accordance with the latest revision of the recloser standards IEEE C37.60 and IEC 62271-111. A complete list of applicable standards is given in Table 1. Table 1. Applicable standards

Description Standard

Automatic circuit reclosers and fault interrupters for alternating current IEEE C37.60 and IEC 62271-111 systems up to 38 kV

Electrical Relays - Part 5: Insulation coordination for measuring relays and IEC 60255-5 protection equipment

Measuring relays and protection equipment - Part 151: Functional IEC 60255-151 requirements for over/under current protection

Environmental testing - Part 2-1: Tests - Test A: Cold IEC 60068-2-1

Environmental testing - Part 2-2: Tests - Test B: Dry heat IEC 60068-2-2

Environmental testing - Part 2: Tests. Test Sa: Simulated solar radiation at IEC 60068-2-5 ground level.

Environmental testing - Part 2-30: Tests - Test Db: Damp heat, cyclic (12h + 12h IEC 60068-2-30 cycle)

Electrical relays - Part 21: Vibration, shock, bump and seismic tests on IEC 60255-21-1 Class 1 - Vibration Endurance measuring relays and protection equipment - Section One: Vibration tests IEC 60255-21-1 Class 2 - Vibration Response (sinusoidal)

Electrical relays - Part 21: Vibration, shock, bump and seismic tests on IEC 60255-21-2 Class 1 - Shock Withstand measuring relays and protection equipment - Section Two: Shock and bump IEC 60255-21-2 Class 2 - Shock Response tests IEC 60255-21-2 Class 1 – Bump

Electrical relays - Part 21: Vibration, shock, bump and seismic tests on IEC 60255-21-3 Class 1 – Seismic measuring relays and protection equipment - Section 3: Seismic tests

Electromagnetic compatibility (EMC) - Part 4-4: Testing and measurement IEC 61000-4-4 techniques - Electrical fast transient/burst immunity test

Instrument transformers – Part 7: Electronic voltage transformers IEC 60044-7

Instrument transformers – Part 8: Electronic current transformers IEC 60044-8

Environmental testing IEC 60068

Telecontrol equipment and systems – Part 5-104: Transmission protocols IEC 60870-5-104

Conduit systems for cable management IEC 61386

2.3.3 Type test reports The Rec series reclosers use technology developed and reﬁned over the last decade by Tavrida Electric and have been extensively type tested by independent and Tavrida Electric laboratories to ensure long life and excellent reliability. The list of test reports is presented in “Appendix 1. Type tests”. 11 TECHNICAL MANUAL

3. PRODUCT CLASSIFICATION

3.1 General information The Rec15_Al and Rec25_Al series automatic circuit reclosers • Umbilical control cable RecUnit_Umbilical_5 connecting consist of the following components: the OSM to the RC. • Outdoor Switching Modules OSM15_Al_1 and OSM25_Al_1 • Recloser mounting kit. are used for switching and reclosing in electrical power • TELARM software allowing: networks with maximum operating voltage up to 15.5 kV and 27 kV respectively. It consists of: 1. Downloading logs, profiles, oscillograms, settings; 1. Outdoor Switching Module; 2. Uploading protection, communication and system settings to the device; 2. Manual-tripping hook; 3. Recording logs (event, malfunction, communication, 3. Bird protection covers; detailed fault profile, etc.); 4. Set of fasteners; 4. Customizing control signal map for customer's SCADA 5. Routine tests certificate. applications. • Recloser Control cubicle RecUnit_RC5_3 is micro- • Technical documentation: processor based controller which provides OSM control, 1. Technical manual; directional overcurrent, earth fault and sensitive earth fault and auto reclosing relay, instantaneous metering, event log, 2. Assembly instructions; demand logger and remote terminal unit for remote control 3. Principal circuit diagram; in a single package. It consists of: 4. Communication protocols user guides; 1. Recloser Control cubicle; 5. TELARM user guide; 2. Bluetooth module, which provides point-to-point wireless connection between the RC and TELARM 6. RC Internet Server user guide. software; • Optional equipment and accessories: 3. USB cable (AM-AF, 0.75 m) for connecting the Bluetooth 1. Telecommunications equipment; module; 2. Outdoor surge arrestors; 4. USB cable (AM-BM, 1.8 m) for connecting the RC to PC; 3. Outdoor voltage transformer; 5. Installation kit; 4. Connecting cables and other accessories. 6. Routine test certificate.

3.2 Part numbering Table 2. Outdoor Switching Module

Part numbering

Group SubGroup Type Parameter Comments

OSM15 Al 1 2 Outdoor Switching Module, 15.5 kV rated voltage.

OSM25 Al 1 2 Outdoor Switching Module, 27 kV rated voltage.

Example code for ordering: OSM15_Al_1(2) 12 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Table 3. Recloser Control cubicle

Part numbering

Group SubGroup Type Parameter Comments

Recloser Control cubicle RC_5 with support of Modbus/DNP3/IEC104 RecUnit RC5 3 - communication protocols, battery unit, Bluetooth module (BTM), set of USB cables for PC and BTM, laptop socket, RC installation kit and technical documentation.

Example code for ordering: RecUnit_RC5_3

Table 4. Umbilical control cable

Part numbering

Group SubGroup Type Parameter Comments

RecUnit Umbilical 5 7 Shielded multicore Umbilical cable for connecting the RC to the OSM, 7 m.

RecUnit Umbilical 5 10 Shielded multicore Umbilical cable for connecting the RC to the OSM, 10 m.

RecUnit Umbilical 5 12 Shielded multicore Umbilical cable for connecting the RC to the OSM, 12 m.

RecUnit Umbilical 01 02 Shielded multicore Umbilical cable for connecting the RC to the ITS, 2 m.

Example code for ordering: RecUnit_Umbilical_5(07)

Note: 1 Should be used with the ITS only Table 5. I/O module1

Part numbering

Group SubGroup Type Parameter Comments

Input/output module with a control voltage 100/250 VDC for discrete EA IntBoard IOM-03 - telecommunication system.

Input/output module with a control voltage 12/60 VDC for discrete EA IntBoard IOM-04 - telecommunication system.

Example code for ordering: EA_IntBoard_IOM-03

Note: 1 I/O module is installed in the RC unless otherwise speciﬁed in the order 13 TECHNICAL MANUAL

Table 6. Telecommunications equipment1

Part numbering

Group SubGroup Type Parameter Comments

3G gateway including power supply unit 12 VDC and antenna. Used for TELARM RecKit RTU 3G iRZ_RUH2b TDI SCADA solution or customer's third party SCADA system.

GSM/GPRS modem including power supply unit 12 VDC and antenna. Used for RecKit RTU GSM iRZ_MC55iT TELARM TDI SCADA solution.

GSM controller including power supply unit 12 VDC and antenna. Used for SMS RecKit RTU GSM M2M_S130 telecommunication system.

Example code for ordering: RecKit_RTU_GSM(iRZ_MC55iT)

Note: 1 Communicaions equipment is installed in the RC unless otherwise speciﬁed in the order Table 7. Recloser mounting kits

Part numbering1

Group SubGroup Type Parameter Comments

OSM15/OSM25 mounting kit for installation onto single cylindrical, trapezoidal RecMount OSM15 1 - and conical poles.

OSM15/OSM25 mounting kit for installation onto A-poles and metal lattice RecMount OSM15 2 - towers.

RecMount OSM15 3 - OSM15/OSM25 mounting kit for installation of Rec15/25 onto H-poles.

RecMount OSM15 Ext - Extension kit for installation of RecMount_OSM15_1 onto plain walls.

VT15/VT25 mounting kit for vertical installation of VT onto cylindrical, trapezoidal RecMount VT 1 - or conical poles.

VT15/VT25 mounting kit for horizontal installation of VT onto cylindrical, RecMount VT 2 - trapezoidal or conical poles.

RecComp Tool Band ENSTO_CT42 Tightening tool, for steel bands COT37 used in mounting kits.

Example code for ordering: RecMount_OSM15_1

Note: 1 Contact your local representative if you cannot ﬁnd a suitable option from the list 14 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Table 8. Interface Test Set (ITS)1

Part numbering

Group SubGroup Type Parameter Comments

EA ITS 1 - Test set ITS_1 for secondary current and voltage injection.

EA ITS OSM-sim01 - OSM simulator.

Example code for ordering: EA_ITS_1

Note: 1 Should be used in combination with the secondary injection test set (e.g. OMICRON or similar). Not included with the delivery. Refer to section “8.3 Interface test set (ITS)” for details Table 9. Voltage transformer

Part numbering

Group SubGroup Type Parameter1 Comments

RecComp VT15 1 Two-phase dry type auxiliary voltage transformer, 12 kV rated voltage.

RecComp VT25 1 Two-phase dry type auxiliary voltage transformer, 24 kV rated voltage.

Example code for ordering: RecComp_VT15_1

Note: 1 Refer to section “8.1.2 VT technical parameters“ to select suitable parameters Table 10. Surge arresters

Part numbering

Group SubGroup Type Parameter1 Comments

Metal oxide type surge arrestors (3 pcs.) encapsulated in a silicone rubber RecComp SA15 SAV housing, 12 kV rated voltage.

Metal oxide type surge arrestors (3 pcs.) encapsulated in a silicone rubber RecComp SA25 SAV housing, 24 kV rated voltage.

Example code for ordering: RecComp_SA25_SAV

Note: 1 Refer to section “8.2.2. SA technical parameters” to select suitable parameters 15 TECHNICAL MANUAL

Table 11. Accessories1

Part numbering

Group SubGroup Type Parameter Comments

Kit consisting of thermostat, hygrostat, heater, MCB and ventilation RecUnit AntiCond 5 - valves for tropical wet climate areas.

RecUnit Umbilical Earthing TEE063.20 Stranded copper earthing conductor 7 m, type HK16/7x1.68.

RecUnit Umbilical Earthing TEE063.21 Stranded copper earthing conductor 10 m, type HK16/7x1.68.

RecUnit Umbilical Earthing TEE063.22 Stranded copper earthing conductor 12 m, type HK16/7x1.68.

Power supply cable for auxiliary voltage transformer 10 m, type MCMK RecUnit Umbilical PowerSupply TEE063.51 2x1,5/1,5.

Power supply cable for auxiliary voltage transformer 24 m, type MCMK RecUnit Umbilical PowerSupply TEE063.52 2x1,5/1,5.

RecKit Umbilical SA - Surge arrester cable kit (6 pcs.), type NYY-O/1x10re.

RecKit Pack Rec25 L1200xW1140xH760 Plywood packaging box for Rec15/Rec25.

RecKit Pack Rec25 L1200xW1140xH960 Plywood packaging box for Rec15/Rec25 with additional OSM extensions.

Example code for ordering: RecUnit_Umbilical_Earthing(TEE063.20)

Note: 1 Contact your local representative for more details about accessories described in this table 3.3 Marking Rec series recloser core components have nameplates located as shown below. OSM Serial number nameplate is made from stainless steel. The symbols are made with laser technology. It is ﬁxed with two rivets. OSM and RC nameplates are made from aluminum. These nameplates are ﬁxed with the aid of glue.

Product Code and Serial Number

Rated Data

Fig.1. OSM nameplate placement Fig.2. Nameplate of OSM 16 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Product code and Rated Data

Fig.3. RC nameplate placement Fig.4. Nameplate of RC

3.4 Sealing The OSM is sealed with two sealing labels (see Figure 5).

Fig.5. OSM seals

Any attempt to peel off or damage the ﬁlm will result in the display of a hidden “OPENED” sign (see Figure 6). Manufacturer warranty does not cover an OSM with either damaged or removed sealing labels.

Fig.6. Damaged seal 17 TECHNICAL MANUAL

Recloser control cubicle and control cable are not sealed when they are shipped. Only the modules installed in the control cubicle are sealed (see Figure 7).

CPM seal

RCM seals

PSFM seal

Fig.7. RC seals 3.5 Packaging Recloser main parts: the OSM and the RC are packed in individual corrugated boxes with the following dimensions (see Table 12). Table 12. Accessories

Rec part L, mm W, mm H, mm Net weight, kg Gross weight, kg

OSM15_Al_1(2) 810 810 890 68 82

OSM25_Al_1(2) 810 810 890 72 86

RecUnit_RC5_3 932 580 450 41 47

RecUnit_Umbilical_5(07)1 - - - - 6.5

RecUnit_Umbilical_5(10)1 - - - - 8.9

RecUnit_Umbilical_5(12)1 - - - - 11.2

Note: 1 Supplied inside the OSM box wrapped in polyethylene package

Handling instructions and crate IDs are given on adhesive labels attached to the box sides. Barcodes have Code 128C format. 18 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Table 13. Package details

Rec part Package Parts that should be found inside ID label

1. Outdoor Switching Module; 2. Manual-tripping hook; OSM15_Al_1(2) 3. Bird protection covers; OSM25_Al_1(2) 4. Set of fasteners; 5. Umbilical control cable; 6. Routine tests certiﬁcate.

1. Recloser Control cubicle; 2. Bluetooth module; 3. USB cable (AM-AF, 0.75 m); 4. USB cable (AM-BM, 1.8 m); RecUnit_RC5_3 5. Installation kit: a. Steel band (4m); b. Steel buckles (2 pcs). 6. Technical Manual; 7. Routine test certiﬁcate.

Pictorial symbols "THIS WAY UP", "FRAGILE", "KEEP AWAY FROM RAIN" and "EXTERNAL LOAD LIMIT" are placed on the two adjoining sides of the crate. Pictorial symbols "THIS WAY UP" and "FRAGILE" are placed on the other two adjoining sides.

Fig.8. Pictorial symbols 19 TECHNICAL MANUAL

4. TECHNICAL PARAMETERS

4.1 Outdoor Switching Module parameters Table 14. Basic operating parameters

Operating Parameter OSM15_Al_1(2) OSM25_Al_1(2)

Outdoor, pole-mounted, combined (solid and air) insulation with arc extinguishing in Class and Type vacuum

OSM tank construction Aluminium alloy

Operating mechanism Magnetic actuator

Current sensing 6x Rogowski current sensors

Voltage sensing 6x Capacitively coupled voltage sensors

OSM Dimension (LxWxH), mm 744x644x649 744x720x730

OSM Weight, kg 68 72

Bushing type Silicon rubber with built-in terminals connectors

Distance between phases, mm 237 274

Distance between Phase and Earth, mm 212 297

Creepage distance, mm 497 868

Degree of protection IP 65

Expected life time, years 30

Ambient temperatures, °C – 40° to +55°

Solar radiation ≤ 1.1kW/m

Humidity 0 – 100%

Altitude, m 30001

Pollution very heavy (as per IEC 60815)

Note: 1 Altitudes above 1000 m should be de-rated in accordance with IEEE C37.60 or IEC 62271-111 20 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Table 15. Rated data

Parameter OSM15_Al_1(2) OSM25_Al_1(2)

Rated maximum voltage, kV 15.5 27

Rated continuous current, A 630

Rated power frequency, Hz 50/60

Rated power-frequency test voltage:

Main circuits, kV, 1 min, dry 50 60

Secondary circuits, kV, 1 min 2

Rated power-frequency withstand voltage, kV, 10 s, wet 45 50

Rated lightning impulse withstand voltage, kV 110 125/1501

Partial discharge decay level, kV, not less than (at 10 pC) 13.2 17.2

Fault make capacity, peak, kA 40 31.5

Fault break capacity, kA 16 12.5

Rated short time current withstand kA 16 (4 s) 12.5 (4 s)

Mechanical life, CO cycles, not less than 30 000

Interrupting life operations, CO cycles, not less than:

at rated current 30 000

at breaking current 200

Closing time, ms 502

Opening time, ms 252

Clearing time, ms 352

Main contacts resistance, µΩ, not more than 85 95

Note: 1 Optional 2 Including control module reaction time 21 TECHNICAL MANUAL

4.2 Sensors parameters Table 16. Phase sensors

Parameter Rated value

Range where accuracy guaranteed, A 1…80001

Operating temperature range (T)2 , °C -40…+55

Rated frequency, Hz 50/60

Coefﬁcient, V/kA 1.955…2.035

Error limits of the coefﬁcient at temperature 20 °C, at rated current, % ± 2

Table 17. Residual current sensors

Parameter Rated value

Range where accuracy guaranteed, A 1…80001

Operating temperature range (T)2 , °C -40…+55

Rated frequency, Hz 50/60

Coefﬁcient, V/kA 1.955…2.035

Error limits of the coefﬁcient at temperature 20 °C, at rated current, % ± 3.5

Table 18. Voltage sensors

Parameter Rated value

Rated frequency, Hz 50/60

Range phase to earth voltage where accuracy guaranteed, kV 0.3…16

Operating temperature range (T), °C -40…+55

Coefﬁcient, V/kA 0.114…0.126

Error limits of the coefﬁcient at temperature 20 °C, % ±0.6

Note: 1 The Rogowski coil can measure current in a wide range but in order to protect the sensors and the control cable against overvoltages, voltage suppressors are ﬁtted in the intermediate unit. These suppressor chop signal from the Rogowski coil if current is greater than 8 kA 22 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

4.3 Recloser Control Cubicle basic technical parameters Table 19. Basic operating parameters

Parameter Value

Rated frequency, Hz 50/60

Operating cubicle (auxiliary) AC supply voltage, V 85÷265

Operating duty cycle O-0.1s-CO-1s-CO-1s-CO-60s-C

Degree of protection IP65

Minimum operating ambient temperature, °C -40

Maximum operating ambient temperature, °C +55

Maximum humidity, % 100

Maximum altitude above sea level, m 2000

Vibration Endurance (Pole mounted) IEC 60255-21-1 Class 1, but test acceleration=1.5g

Vibration Response (Pole mounted) IEC 60255-21-1 Class 2

Shock Response (Pole mounted) IEC 60255-21-2 Class 1

Seismic IEC 60255-21-3 Class 1

RTU power supply:

- voltage range, V 5…15, step 0.5 - max continuous output power, W 15 - max output power at 0.5 duty cycle (range 12-15 V), W 30

Operating time after loss of auxiliary supply , hours: 48

Maximum power consumption of RC from auxiliary supply1 , W 60

Weight2 , kg 41

Dimensions, mm 620x835x409 mm

Note: 1 Without providing power for RTU and USB, without IOM, CPM not active 2 IOM, RTU are not included 23 TECHNICAL MANUAL

Table 20. Electromagnetic compatibility

Parameter Rated value Applicable standard

Rated power frequency test voltage, kV (1 min) 2 IEC 60255-5

Rated Impulse Voltage, kV (1.2 / 50 µs) 5 IEC 60255-5

Electrical Fast Transient/Burst Immunity, kV 4 IEC 61000-4-4 (Level IV)

Surge Immunity (applied to external AC voltage terminals), kV

- common 4 IEC 61000-4-4 (Level IV) - transverse 2

Control elements surge withstand capability (SWC), kV (kA) 100 (7) IEEE C37.60, IEC 62271-111

Table 21. Measurement accuracy1

Measured value Tolerance Guaranteed range

Phase to earth voltages The greater of ±1% or ±0.1 kV 0.3 - 16.0 kV

Line to line voltages The greater of ±1% or ±0.1 kV 0.5 - 27.0 kV

Phase currents The greater of ±1% or ±2A 0 - 630 A

Residual current The greater of ±1% or ±0.5A 0 - 630 A

Frequency

- at dF/dt<0.2Hz/s ±0.025Hz 45 - 55 Hz,

- at dF/dt<0.5Hz/s ±0.05Hz 55 - 65 Hz

Power factor ±0.02 0 - 1

Active, reactive and total power ±2% 40 - 630 A, 4.5 - 27 kV

Active and reactive energy ±2% 40 - 630 A, 4.5 - 27 kV

Note: 1 Applicable for sensor transformation coefﬁcients declared in section 4.2 Table 22. Protection accuracy1

Parameter Tolerance Guaranteed range

Operational pickup current

- for phase overcurrent elements the greater of ±2% or ±2A 10-6000A

- for earth overcurrent elements the greater of ±5% or ±1A 1-1280A

Operational pickup voltage1 the greater of ±1% or ±0.1kV 0.5-30kV 24 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Parameter Tolerance Guaranteed range

45-55Hz for Frated=50Hz Operational pickup frequency ±0.05Hz 55-65 Hz for Frated=60Hz

Phase accuracy ±2° at U1 ≥0.5 kV and I1 ≥40A

Tripping time for time current characteristics: the greater of:

- deﬁnite time at 1.05xIp +1%/-1%; +35ms/-10ms

- deﬁnite time at 2xIp +1%/-1%; +25ms/-10ms

- deﬁnite time at 5xIp +1%/-1%; +15ms/-10ms

- deﬁnite time at 10xIp +1%/-1%; +10ms/-10ms

- ANSI: I/STI/LTI; IEC: I at 2xIp +3%/-3%; +35ms/-10ms

- ANSI: I/STI/LTI; IEC: I at 5xIp +3%/-3%; +35ms/-10ms

- ANSI: I/STI/LTI; IEC: I at 10xIp +3%/-3%; +30ms/-10ms

- ANSI: I/STI/LTI; IEC: I at 20xIp +3%/-3%; +25ms/-10ms 0-120s for all-time current characteristics - IEC: VI/LTI at 2xIp +3%/-3%; +40ms/-10ms

- IEC: VI/LTI at 5xIp +3%/-3%; +35ms/-10ms

- IEC: VI/LTI at 10xIp +3%/-3%; +35ms/-10ms

- IEC: VI/LTI at 20xIp +3%/-3%; +35ms/-10ms

- ANSI: EI/VI/STEI/LTEI/LTVI; IEC: EI at 2xIp +3%/-3%; +50ms/-10ms

- ANSI: EI/VI/STEI/LTEI/LTVI; IEC: EI at 5xIp +3%/-3%; +50ms/-10ms

- ANSI: EI/VI/STEI/LTEI/LTVI; IEC: EI at 10xIp +3%/-3%; +50ms/-10ms

- ANSI: EI/VI/STEI/LTEI/LTVI; IEC: EI at 20xIp +3%/-3%; +40ms/-10ms

Note: 1 Applicable for sensor transformation coefﬁcients declared in section 4.2 Table 23. I/O module parameters

Parameter Value

Rated voltages, V DC - for IOM-04 12/24/30/48/60 - for IOM-03 110/125/220

Pickup voltage, V - for IOM-04 Above 7 - for IOM-03 Above 70

Dropout voltage, V - for IOM-04 Below 3 - for IOM-03 Below 30 25 TECHNICAL MANUAL

Parameter Value

Maximum continuous voltage, V - for IOM-04 75 - for IOM-03 275

Input resistance, not less, kOhm - for IOM-04 3 - for IOM-03 125

Recognition time, ms 20

Reset time, ms 20

Contacts of output relays

Rated voltage AC, V 250

Rated current, A 16

Breaking capacity DC1 (at L/R=1ms): 30/110/220 V, A 16/0.3/0.12

Minimum switching load, mW (V/mA) 500 (10/5)

Table 24. Rechargeable battery parameters

Parameter Value

Type G26EPX EnerSys 0765-2003 sealed lead

Rated voltage, V 12

Rated capacity, Ah 26

Minimum operating temperature, °C -40

Maximum operating temperature, °C +55

Maximum amount of recharging cycles from full discharge state 300

Relative capacity at different temperatures, % - at -40°C 25 - at -20°C 65 - at 0°C 84 - at +25°C 100 - at +40°C 110 - at +55°C 120

Float life, years - at +20°C 16 - at +25°C 10 - at +30°C 6.5 - at +40°C 2.7 26 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

5. DESIGN AND OPERATION

5.1 Design 5.1.1 Outdoor Switching Module (OSM) The Outdoor Switching Module contains three poles (see Figure 9). Each pole contains a vacuum interrupter and an insulated drive rod incorporated into polycarbonate housing. The Switching module contains three magnetic actuators, one per pole. The three poles and the single mechanism enclosure are installed in an IP65 protective tank. The tank and bottom cover are made of corrosion-proof aluminum alloy. All aluminum surfaces are chemically pre-oxidized and powder coated. The OSM has a unique, fully insulated, internal design to avoid the necessity of a completely sealed tank. The drainage ﬁlters are located at the base of the tank to prevent the built-up of condensation. The three magnetic actuators are mechanically interlocked to ensure correct three-phase operation. The mechanism is kept in the open position by the force of the opening spring and in the closed position by the magnetic latch. Each actuator is driven by a single solenoid. A trip operation is achieved by reversing current direction to generate a driving force in the opposite direction. Energy for the operations is provided by capacitors located in the recloser control cubicle. The OSM can be mechanically tripped by using a hook stick to pull the manual tripping hook to the open position. Refer to “Appendix 3. Dimensions” for the OSM dimensional drawings.

1 1. Terminal 2. Six HV silicone bushings 3. Current sensors built into the bushings 2 4. Vacuum circuit breaker 5. Protective tank 6. Mechanical position indicator 7. Harting connector 3 8. Manual trip operation mechanism 9. Support rail 4 5

7 8 9

Fig.9. General arrangement of the OSM15 27 TECHNICAL MANUAL

5.1.2 Protective tank The OSM tank (see Figure 10) is made of a corrosion resistant anodized aluminum alloy. The tank is coated with light gray RAL 7038 powder coating. The OSM has 4 drainage filters installed in the bottom, one per corner. It allows effective OSM dehumidification in case of condensation build up. Threaded holes (M12x30) on each side of the tank allow the application of various kits and the OSM installation on various poles and structures. These threaded holes can also be used to install a set of lifting lugs on the tank. The earthing provision (M12x30 threaded openings) is labelled for identification. Support rails are made from 12 mm aluminum round profile. They are fixed on the tank by two set screws M10x12 holes can also be used to install a set of lifting lugs on the tank.

Lifting lugs provisions

Earthing provision

Mounting provisions

Support rails Drainage ﬁlters

Fig.10. OSM protective tank

5.1.3 Main contacts position indicator The position indicator is located on the base of the tank and is clearly visible from the ground (see Figure 11). When the OSM is closed, the indicator color is RED. The Indicator color changes to GREEN when the OSM is opened. According to IEC standard, the “I” character should indicate that the OSM is closed and the “O” character will show that the OSM is opened. The housing IP65 rating is retained through use of a transparent viewing window sealed with a silicon rubber gasket.

NOTE! Manual closing of the OSM is not possible. Closing can only be carried out through the recloser control cubicle.

Fig.11. Main contact position indicator 28 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

5.1.4 Current and voltage sensing Current sensing is carried out by six Rogowski sensors, one on each HV terminal (see Figure 12). The sensors on the X1 X2 X3 terminals have star-connected secondaries, which monitor phase currents. The sensors on the X4 X5 X6 terminals have delta-connected secondaries, which provide residual current measurement. Rogowski sensors are fundamentally air-cored CTs making them unsusceptible to current saturation when exposed to fault currents. Furthermore, Rogowski sensors, unlike conventional current transformers, do not generate potentially hazardous voltages when the secondary is an open circuit, as the absence of an iron core eliminates circuit loading and saturation concerns. As the iron core of the current transformer becomes saturated, the CT's accuracy declines significantly, which limits the accuracy of its readings. CT's reasonable accuracy is only maintained for currents in the range between 20-120% of rated primary current. This means that conventional transformers are not efficient for identifying low currents where Rogowski sensors provide accurate primary current readings across all ranges and outperform current transformers. Excellent linearity of Rogowski sensors eliminates problems with selection of the CT rating which may need to be specified individually for a certain project. The Rogowski sensor outputs a voltage proportional to the rate of change of the main circuit current. The output signal is digitally integrated to generate a relationship between the output voltage U and the main circuit current I. This relationship could be written as U=kˣI, where k is expressed in V/A.

Voltage sensing is carried out by a conductive rubber sheath that is capacitively coupled to the voltage applied to the HV terminals UHV .

The voltage sensors voltage U is proportional to the voltage applied to the HV terminals. This relationship could be written as U=kˣUHV , where k is expressed in V/kV.

Fig.12. Combined current and voltage sensor 5.1.5 Bushing extensions Bushings provide combined insulation of main circuits of the indoor switching module and protective tank. The external part of the bushing is covered by light grey silicon rubber to protect against atmospheric inﬂuences. The terminals on the nominal (source) side are marked X1, X2 and X3. The terminals furthest from the pole (load) side are correspondingly marked X4, X5 and X6. Bushings consist of cupper rods that are covered with silicone rubber. The silicone rubber bushings provide the required creepage distance 31 mm/kV and a taut string distance for BIL requirements (see Table 25). Table 25. Creepage distance

OSM Rated Voltage Description 15.5 kV 27 kV

Creepage Distance 497 mm 868 mm / 1058 mm1

BIL level 110 kV 125 kV / 150 kV1

Note: 1 Upon special request. For more details contact your local representative 29 TECHNICAL MANUAL

OSM bushing extensions (see Figure 13 and Figure 14) have cylinder endings with milled cable connection surfaces. This surface provides reliable contact area for cable or conductor connection. All parts are made of copper with Sn-Bi (tin-bismuth) coating and allow both aluminum and copper conductor connection.

Fig.13. OSM15 bushing extensions Fig.14. OSM25 bushing extensions

Bushing extensions have threaded inserts on the butt-end made of brass with Sn-Bi coating (see Figure 15). Inserts are covered by plastic plugs (see Figure 16) that shall to be removed before connecting lugs. Plastic plugs

Insert

Fig.15. OSM bushing inserts Fig.16. OSM bushing plastic plugs

Refer to section “9.6. Connection of primary circuits” for more details. 30 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

5.1.6 Vacuum circuit breaker The essence of OSM is Tavrida Electric vacuum circuit breaker (see Figure 17). Tavrida Electric has simpliﬁed the mechanical structure of the vacuum circuit breaker to the greatest possible extent. It uses three single-coil magnetic actuators, one per pole. All switching elements of a pole are assembled along a single axis. All mechanical movements are therefore direct and linear. Three actuators are installed in a steel frame and mechanically linked by a synchronizing shaft. Due to the design, any failure of critical components, such as mechanical latching, gears, chains, bearings and levers, tripping and closing coils, motors to charge springs are completely avoided. Tavrida Electric manufactures vacuum interrupters that combine small dimensions with extremely long mechanical and electrical lifespan. The use of a specially designed axial magnetic ﬁeld distribution provides even current density over the contact surface and consequently substantial improvement of vacuum interrupting performance. Carefully selected contact material, expert contact design and optimized switching result in bounce-free closing. The result is 30 000 C-O operations at rated current or 200 C-O operations at maximum short-circuit breaking current without replacing or adjusting any parts of the circuit breaker. Tavrida Electric vacuum circuit breakers are entirely maintenance free over a total life expectancy of at least 30 years.

1. Upper terminal 2. Vacuum interrupter 3. Lower terminal 4. Movable contact with bellows 5. Flexible junction shunt 6. Drive insulator 7. Opening and contact pressure springs 8. Magnetic actuator (complete module) 2 9. Armature 10. Synchronizing shaft 3 11. Actuator coil 12. Interlocking pins 13. Auxiliary contacts 15 14. Frame 4 15. Support insulator

5 6

7 8 13

12 11 10 9

Fig.17. Vacuum Circuit Breaker 31 TECHNICAL MANUAL

5.1.7 Recloser control Tavrida Electric Recloser Control provides the following Ÿ Change Messages; advantages: Ÿ Protection Counters; Recloser Control Cubicle (RC) Ÿ Lifetime Counters; Ÿ Control panel with 6-lines-40-characters graphical LCD for Ÿ Log filling counters. clear event indication. Communications Measurement Ÿ Advanced communication functionality including support of Ÿ The recloser control allows wide measurement capabilities, different communication protocols and data communication including phase, neutral and sequence currents, phase, equipment including Bluetooth. phase-to-phase and sequence voltages, phase and 3-phase active and reactive power and energy. Logging is provided for Ÿ Exceptional configuration flexibility (ability to apply different key measurement data. sets of local and remote communication interfaces). Protection TELARM User Software Ÿ The recloser control provides sophisticated protection Tavrida Electric Automated Relay Manager (TELARM) is functionality. The protection incorporates unique features designed for the specific needs of electrical distribution that significantly simplify the protection engineering networks based on Tavrida Electric products. It allows: process. Ÿ Downloading logs, profiles, oscillograms, settings, etc; Monitoring Ÿ Uploading protection, communication and system settings to Ÿ Highly comprehensive log files; the device; Ÿ Event Log; Ÿ Recording logs (event, malfunction, communication, etc.), provides detailed fault profile; Ÿ Malfunction Log; Ÿ Customizing control signal map for customer's SCADA Ÿ Communication Log; applications. Ÿ Load Profile; Ÿ Fault Profile;

5.1.8 Recloser Control Cubicle The recloser control cubicle RC5_3 is a new generation control box that is the result of more than 20 years of recloser production and service experience. The RC5_3 is enclosed in a powder coated anodized aluminum and provides IP65 protection housing (see Figure 18 and Figure 19).

1. Three-point locking system 1 2. Rubber seal 3. Fixing rod 4. 2 x IP65 glands for Power supply cable (ø9...17 mm) 7 5. Bluetooth module (BTM) 6. Anti-vandal cover of Control Cable 7. External door 8 8. Control panel module (CPM) 9 9. Internal door 2 10. Overcurrent miniature circuit breakers 11. Dust proof drainage ﬁlter 3 12. IP65 glands: - 2 x ø 4…10 mm; 10 4 - 1 x ø 9…17 mm; - 1 x ø 11...21 mm. 5 13. Earthing stud 11 14. Mounting brackets 6

13 14

Fig.18. RC5_3 with internal door closed 32 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

3 1. RTU mounting plate 2. Input/Output module (IOM) 3. Recloser Control Module (RCM) 4 4. Battery circuit breaker 5. Battery 6. Power supply ﬁlter module (PSFM) 5

Fig.19. RC5_3 with internal door open The external door has a padlock provision that is suitable for a shackle with up to a 12 mm diameter (see Figure 20). The external door can be securely ﬁxed in the open position using the ﬁxing rod. To open the door the handle should be rotated counterclockwise (see Figure 21).

Fig.20. RC5_3 door locked Fig.21. RC5_3 door unlocked The anti-vandal cover is ﬁxed from inside the housing with one captive screw (see Figure 22). It protects the Umbilical cable from unauthorized disconnection. 33 TECHNICAL MANUAL

1. Control cable terminal 4 2. Anti-vandal cover 1 3. Locking stud 3 4. Captive screw 2

Fig.22. Anti-vandal cover The RC5_3 is equipped with different cable glands for: • I/O cable or external RTU connections (ø 11…21 mm); • antenna (ø 4.5…10 mm); • power supply cable (ø 9…17 mm). Cable glands are delivered with plastic caps installed. The housing has provisions for protection against dust and water ingress. Four drainage ﬁlters installed in the bottom, one per corner, allow effective RC dehumidiﬁcation in case of condensation build-up.

1. Dustproof drainage ﬁlter 2 2. Cable inlets 3. Earthing stud

Fig.23. RC5_3 bottom view

The RC5_3 is equipped with a Door Position Switch (DSP) which is used for switching off the CPM display when the RC door is closed, as well as providing a SCADA indication of RC door position (see Figure 24). The door position switch is mounted on the inside of the door and is actuated by the lever mounted opposite to the switch on the inside of the door. 34 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Door position Door position switch lever switch

Fig.24. Door position switch

The RC5_3 is equipped with a DIN-rail socket outlet (CEE 7/3) for a laptop mounted on the internal door (see Figure 25). The socket is protected by an overcurrent miniature circuit breaker against overload and short circuits. Each socket outlet is supplied with an additional BS-1363 plug adapter.

Fig.25. AC socket outlet

Optionally the RC5_3 can be equipped with the anti-condensation kit designed to prevent condensation build-up inside the cubicle in tropical wet climate areas (refer to section “5.1.17 Anti-condensation kit”) and I/O module for control and indication functions via digital inputs/outputs (refer to section “5.1.15 I/O Module (IOM”). The RC5_3 control cubicle has the following components: • Control Panel Module (CPM); • Recloser Control Module (RCM); • Power Supply Filter Module (PSFM); • Input/Output Module (IOM); • Bluetooth Module (BTM); • Battery (BAT); • Anti-condensation kit. 35 TECHNICAL MANUAL

Table 26. Standard and optional components of RC5_3

Module or component Standard Optional

CPM •

RCM •

PSFM •

BAT •

BTM •

IOM •

Anti-condensation kit •

NOTE! All internal modules are installed and wired inside the RC5_3. The only terminations to be wired by customer are terminations of I/O modules (refer to section “5.1.15 I/O Module (IOM)” for more details) and RTU power supply (refer to section “5.1.16 Provision for Remote Terminal Unit (RTU)” for more details). WAGO cage clamps are used to provide customer wired terminations. Wires are connected into the clamps using a screwdriver included with the delivery. The WAGO clamps can accept either solid or stranded wires within the range (0,5 - 1,5) sq. mm. Insulation stripping length shall be (6 - 10) mm.

Fig.26. WAGO cage clamps for wiring terminations

Refer to “Appendix 3. Dimensions” to see the RC5_3 dimensional drawing. Refer to “Appendix 4. Wiring diagrams” to see the RC5_3 main wiring diagrams. 36 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

5.1.9 Umbilical control cable The Umbilical control cable RecUnit_Umbilical_5 (see Figure 27) connects the OSM actuators, metering and auxiliary wiring to the RC. Control cable wires are protected by PVC coated steel armored sleeve. The cable is equipped with a heavy duty 42 pin male connector on the OSM side and heavy duty 32 pin female connector on the RC side. The connection is made using heavy-duty connectors (see Figure 28). These connectors exhibit excellent mechanical properties and prevent rust. Advanced current and voltage measurement system, recloser control module (RCM) and the circuit breaker technology allows unplugging the umbilical cable when the device is in operation. The position of the main contacts will remain the same, as when the umbilical cable is plugged unless there are preprogrammed actions. There are no hazardous voltages from either side of the unplugged umbilical and it will not cause any injury. The umbilical cable can be plugged in when the main line is energized. Standard cable length is 7, 10 or 12 meters.

Fig.27. Umbilical cable Fig.28. Heavy duty connector

The Umbilical control cable RecUnit_Umbilical_0 connects the RC to ITS (refer to section 8.3 ”Interface test set (ITS)” for details). The 2- meter cable is equipped with a heavy duty 32 pin male connector on the ITS side and heavy duty 32 pin female connector on the RC side.

NOTE! RecUnit_Umbilical_0 is used with the ITS only.

Refer to “Appendix 3. Dimensions” to see the Umbilical control cable dimensional drawing. Refer to “Appendix 4. Wiring diagrams” to see the Umbilical control cable wiring diagram. 37 TECHNICAL MANUAL

5.1.10 Control Panel Module (CPM) The CPM provides local control and indication functions to the RC5_3 (see Figure 29 and Figure 30). The CPM has an integrated USB interface for PC connection.

USB interface Connector CPM-RCM

Fig.29. CPM front view Fig.30. CPM back view 5.1.11 Recloser Control Module (RCM) The RCM is the recloser control module. The RCM provides protection, communication, measurement and control functions (see Figure 31 and Figure 32).

Fig.31. RCM connections with other RC modules Fig.32. RCM without connections

5.1.12 Power Supply Filter Module (PSFM) This module provides impulse noise protection for all internal modules of the RC5_3. The PSFM is connected to the RCM via a WAGO plug (see Figure 33). The PSFM is connected with two overcurrent miniature circuit breakers (MCB) on the internal door. These breakers protect auxiliary voltage inputs from overloads and short circuits. The PSFM also provides power to the laptop socket and anti-condensation kit (optional). 38 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Studs for DIN rail installation

Power supply, earthing and socket connectors

Earthing wire WAGO plug XS1

Fig.33. Power Supply Filter Module 5.1.13 Rechargeable Battery (BAT) A GENESIS G26EPX lead sealed battery (see Figure 34) provides the RC5_3 with auxiliary power when the main auxiliary power is not present.

Fig.34. Rechargeable Battery

The power supply system is designed to provide optimum charging and long life of this battery. The life expectancy of a Genesis battery on control cubicle application depends mainly on the ambient temperature. Float life time of the accumulator battery is declared as 10 years at 25°C of the battery ambient temperature. In case of an average ambient temperature is more than 25°C the following equation is used for calculating of ﬂoat life acceleration factor: FloatLife =10 / AF AF = 2(0.125*T −3.125) Where: AF is acceleration factor, T is the battery ambient temperature in °C. Table 27 shows dependency of Battery Float Life Time vs Temperature. 39 TECHNICAL MANUAL

Table 27. Battery ﬂoat life time vs temperature

Temperature, °C AF Float Time, years Temperature, °C AF Float Time, years

-40 0.115 10.00 35 2.378 4.21

0 0.273 10.00 36 2.594 3.86

20 0.648 10.00 37 2.828 3.54

21 0.707 10.00 38 3.084 3.24

22 0.771 10.00 39 3.364 2.97

23 0.841 10.00 40 3.668 2.73

24 0.917 10.00 41 4 2.50

25 1 10.00 42 4.362 2.29

26 1.091 9.17 43 4.757 2.10

27 1.189 8.41 44 5.187 1.93

28 1.297 7.71 45 5.657 1.77

29 1.414 7.07 46 6.169 1.62

30 1.542 6.49 47 6.727 1.49

31 1.682 5.95 48 7.336 1.36

32 1.834 5.45 49 8 1.25

33 2 5.00 50 8.724 1.15

34 2.181 4.59

5.1.14 Bluetooth Module (BTM) The Bluetooth module provides point-to-point wireless connection between the RC and a personal computer. It is connected to the RCM via a USB cable included with the delivery (see Figure 35). USB connectors “3” or “4” are used for connection to Bluetooth.

NOTE! Only TEL Bluetooth modules are supported.

Bluetooth module parameters are represented in Table 28. 40 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Table 28. Bluetooth module data

Parameter Value

Bluetooth version v.2.0 + EDR

Frequency 2402 - 2480 Ghz

Data transfer rate 2.1 Mpbs

Output level (Class 2) +6 dBm

Operating range 300 m (free space)

Receive Sensitivity Better than -84dB

Interface USB

Dimensions 64x20x11 mm

USB cable for Bluetooth module connection

Bluetooth module

Fig.35. Bluetooth Module with its USB cable 41 TECHNICAL MANUAL

5.1.15 I/O Module (IOM) The RC5_3 can be supplied with an IOM (see Figure 36) on request. The IOM provides control and indication functions via digital inputs/outputs. The IOM has twelve digital inputs and twelve digital outputs. The location of connectors (marked „15“…“18“) with these inputs and outputs are shown in Figure 37.

Fig.36. Overall view of IO module

Digital inputs are electrically isolated by means of opto-couplers (see Figure 38).

Fig.37. Location of IOM connectors Fig.38. Digital inputs

Bistable relays with changeover contacts are used for the digital outputs as illustrated in Figure 39.

Fig.39. Digital outputs 42 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

5.1.16 Provision for Remote Terminal Unit (RTU) Available space for placing the RTU (telecommunications equipment) on mounting tray is 280x175x60 mm (see Figure 40).

Captive screws Mounting tray

Plastic Mounting tray mounting plate

Fig.40. RTU mounting tray Control cubicle provides 5÷15 V DC supply voltage for RTU (see Table 29). Table 29. RTU power supply

Сonnector Pin number Signal description

“10” “1” +12V for RTU

“10” “2” GROUND

Two RS-232 ports and one Ethernet port (provided upon request) provided for remote communication. RS-232 port marked as "6" is used for Telecommunication interface (DNP3 serial and Modbus serial communication protocols) and RS-232 port marked as "5" is used for TELARM Dispatcher interface (TDI) or for local communication with PC. One standard DTE-DCE cable (DE-9M / DE-9F) is supplied with the RC5_3 connected to the RS-232 port marked as "6". Pin-outs of each of the RS232 and Ethernet connectors are shown in Table 30 and Table 31.

NOTE! RS232 and Ethernet ports of the RC5_3 are not isolated from communication line. 43 TECHNICAL MANUAL

Table 30. RS232 pin-out table

Contact Signal Designation

1 DCD Data Carrier Detect

2 RX Received Data

3 TX Transmitted Data

4 DTR Data Terminal Ready

5 GND Signal Ground

6 DSR Data Set Ready

7 RTS Request To Send

8 CTS Clear To Send

9 RI Ring Indicator

Table 31. Ethernet pin-out table

Contact Signal Designation

1 TX+ Data Transmit (+)

2 TX- Data Transmit (-)

3 RX+ Data receive (+)

4 - Not connected

5 - Not connected

6 RX- Data receive (-)

7 - Not connected

8 - Not connected

The Ethernet port parameters are represented in Table 32. Table 32. Ethernet port parameters

Parameter Value

Interface 1 x RJ-45 10/100 Mpbs

IEEE 802.3 Standard IEEE 802.3u 44 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

5.1.17 Anti-condensation kit The anti-condensation kit is designed for use in the RC5_3 to prevent condensation build-up inside the cubicle in tropical wet climate areas (see Figure 41 and Figure 42).

NOTE! The anti-condensation kit is recommended for use in case of speciﬁc requirements for the humidity level inside the enclosure.

The kit consists of thermostat, hygrostat, heater, miniature circuit breaker and ventilation valves. When relative humidity inside the control cubicle exceeds a preset level, a relay in hygrostat trips and switches the heater on. The heater increases the air temperature inside the control cubicle and therefore relative humidity decreases. Ventilation valves provide natural convection inside the control cubicle, and therefore ensure the uniformity of temperature and humidity. When the temperature inside the control cubicle exceeds the preset level, relay in the thermostat switches off heater. The hygrostat setting depends on climatic conditions. Manufacturer recommends setting the hygrostat at 70%. Setting of thermostat should not exceed 55°С.

Fig.41. Anti-condensation kit (electrical components)

Fig.42. Anti-condensation kit (ventilation valves) 45 TECHNICAL MANUAL

5.2 Operation 5.2.1 Opening Emergency opening A mechanical trip hook is located at the bottom of the tank (see Figure 43). When the hook is pulled down, the OSM is mechanically tripped, locked in the OPEN position and electrically isolated from the driver. An „OSM Coil Isolated“ warning event is generated by the recloser control to provide indication of a locked state. The OSM remains locked and cannot be operated until the trip hook is pushed back into the operating position.

Fig.43. Mechanical trip hook Opening via MMI To open OSM main circuits, push the green Open pushbutton labeled The Open command is executed in both Local and Remote mode. 5.2.2 Closing Closing via MMI To close OSM main circuits, push the red Close pushbutton labeled The command is only executed if the Control Mode is set to “Local“ and the mechanical trip hook is pushed back into its operating position. If the Control Mode is set to “Remote“ and/or the mechanical trip hook is pulled down, the Close command will not be executed. The message “Pushbutton Closed is disabled in Remote mode“ appears on the screen if Control Mode is “Remote“. If the mechanical trip hook is pulled down the message “Excessive close time“ will appear in the Malfunction log.

Malfunction log Open pushbutton Event log Close pushbutton Local / Remote

Fig.44. RC5_3 Control Panel Module 46 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

5.2.3 Indication The open state of the OSM main contacts is indicated via • LED above button • position window on the OSM

Fig.45. OSM opened

The closed state of the OSM main contacts is indicated via • LED above button • position window on the OSM

Fig.46. OSM closed 47 TECHNICAL MANUAL

6. FUNCTIONALITY

6.1 Protection 6.1.1 Overview The protection functionality is designed for the following key • Low system frequency caused by local undergeneration, applications: islanding or generation system malfunctions; • Radial line recloser; • High system voltage caused by tap changer malfunctioning, overgeneration or islanding. The protection prevents • Normally closed ring recloser; sensitive load from damage; • Normally open ring recloser; • High system frequency caused by islanding. • Rezip recloser (sectionalizer) - provides protection and The ring line recloser provides Loss of Supply, Automatic reconfiguration in radial, ring and meshed networks where Backfeed Restoration and Close Condition Verifier (syncro- conventional protection grading is impossible. check) functionality required for loop automation and self- The radial line recloser provides the protection against the healing schemes. The ring line recloser provides protection following faults: against the same faults as the radial line recloser. The ring line recloser has directional element to determine power flow • Short circuit. Phase-to-phase and three-phase short direction. Ring line recloser has independently configurable circuits, sets of settings for direct and reverse power flow direction. • Earth fault. Single-phase and double-phase earth faults; The Rezip recloser is used to automate various networks where • Bolted fault. Very low impedance fault, typically caused by traditional time and current grading is impossible. Unlike a human factor or accident; conventional recloser, the Rezip recloser can be used in ring and meshed networks and self-healing schemes. Any number of • Low current earth fault caused by high impedance phase to Rezip reclosers can be connected in series. ground short circuit; Protection elements against short circuit, high impedance earth • Upstream broken conductor. Conductor touching ground at fault, low system voltage and low system frequency faults are the source side; provided with independent reclosing elements. • Downstream broken conductor. Conductor touching ground The ring line recloser is provided with a unique setting-free at the load side; source detector. The source detector continuously detects the • Low system voltage caused by incorrect network operation direction the power flows through the recloser main contacts. mode, tap changer malfunction, undergeneration or Reclosing elements as well as the Automatic Backfeed islanding. The protection prevents sensitive load, such as Restoration are controlled by the Voltage Reclosing Control motors, from overload and failure; (VRC). The VRC blocks autoreclosing if power quality doesn't comply with customer requirements. 6.1.2 Protection elements 6.1.2.1 Source Detector (SD) The source detector element has two main functions: The SD element fails to identify the source side (SD = "Source lost") if voltage and current drop below the level of sensitivity or • Provides power flow direction to directional protection when the recloser is “Open“ and both sources are present. elements (ring operation mode); If the “Operating mode” setting is “Disable” then the SD element • Provides source side information for loss of supply always identifies the source side as "Source found" (radial protection element. recloser) and "Source found+" (ring recloser). As a result, the Protection elements: AR OC, HL, AR SEF, VU, CU, AR UV, AR UF, SD element does not influence the protection elements. AR OV, AR OF and ABR operation depends on the source side SD settings are described in Table 33. being identified. If power flows from “Source +“ side, then “Set +“ protection settings are active, if power flows from “Source -“ Bolted Fault (BF) side, then “Set -“ protection settings are active. The BF element provides instantaneous tripping when bolted The SD element identifies the source side (SD = "Source found") fault conditions are detected. As it deals both with the positive when the following conditions are met: sequence voltage and current it provides better sensitivity for bolted faults than conventional highset overcurrent elements. • Recloser state = "Closed"; • Positive sequence voltage U1 > Ust; The operation of the element can be described as follows: It • Positive sequence power P1 > 2,5 kW (cosφ>0,02). initiates an instantaneous trip request to the driver to open the recloser when the phase current exceeds the Pickup current Or value (Ip) and the positive sequence voltage is below 500V. • OSM state = "Open"; The element is blocked when the following signals are activated: • Positive sequence voltage U1 > Ust. Ÿ Protection Off. BF settings are described in Table 34. 48 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Table 33. SD settings

Setting Designation Range Default

Operating mode Mode Enable/Disable Disable

Source threshold voltage Ust1 0.5 – 27.0 kV 0.5 kV

Note: 1 Ust cannot exceed the value of Rated voltage conﬁguration setting.

6.1.2.2 Phase Overcurrent (OC) This element provides protection against overloads, phase-to- Multiplier and a timer is activated for the duration of the current phase and three-phase short circuits. dependent Tripping time (Tt) defined by the time current characteristic TCC curves. When this time expires and the phase OC protection consists of six (6) individual overcurrent elements current still exceeds a dropout value , OC2 initiates a trip request providing three stages of protection for both the Forward to the driver to open the recloser. If the phase current is lower (Source+) and Reverse (Source-) powerflow directions: OC1+, than the dropout value whilst the timer is active, then a reset OC1-, OC2+, OC2-, OC3+, OC3-. timer is activated which expires in accordance to the current OC1 dependent value (Tres) after which this element becomes passive again. Phase overcurrent low set element OC1 is designated to provide time delayed trips. It is enabled in any selected sequence in the The element is blocked when the following signals are activated: Overcurrent Reclosing element. "I" (Instantaneous) stands for Ÿ SD = "Source lost"; accelerated and "D" (Delayed) for delayed step of overcurrent protection in an autoreclosing sequence. Ÿ Hot Line On; The operation of the element can be described as follows: It Ÿ Protection Off. becomes active when the phase current exceeds the Pickup It is also blocked by the AR OC element if it is executing a delayed current value (Ip) multiplied by the Operational Cold Load (D) trip sequence step. Multiplier. A timer is then activated for the duration of the current dependent Tripping time (Tt) defined by the time current Available TCC are presented in Table 35. OC2 settings are characteristic TCC curves. When this time expires and the phase described in Tables 37–41. current still exceeds a dropout value , OC1 initiates a trip request OC3 to the driver to open the recloser. If the phase current is lower than the dropout value whilst the timer is active, then a reset Phase fault high set instantaneous element provides protection timer is activated which expires as set by (Tres) after which this against phase high current faults with a reduced number of trips element becomes passive again. to lockout. If there is no intention to reduce the number of trips to lockout at high current faults, enabling this element is not The element is blocked when the following signals are activated: recommended. OC1 and OC2 allow reduction of tripping time to Ÿ SD = "Source lost"; any desired value at high currents. Ÿ Hot Line On; The operation of the element can be described as follows: It becomes active when the phase current exceeds the Pickup Ÿ Protection Off. current value (Ip) and a timer is activated for the duration of the Available TCC are presented in Table 35. OC1 settings are set Tripping time (Tt). When this time expires and the phase described in Tables 37–41. current still exceeds a dropout value, OC3 initiates a trip request to the driver to open the recloser. OC2 The element is blocked when the following signals are activated: Phase overcurrent low set element OC2 is designated to provide accelerated trips. If a sequence step in the Overcurrent Ÿ SD = "Source lost"; Reclosing Element is set "D" OC2 element is disabled. If a Ÿ Hot Line On; sequence step in the Overcurrent Reclosing element is set "I" OC2 element is enabled. Ÿ Protection Off. The operation of the element can be described as follows: It Oc3 element settings are described in Table 36. Only TD TCC is becomes active when the phase current exceeds the Pickup available for this high set protection element. current value (Ip) multiplied by the Operational Cold Load 49 TECHNICAL MANUAL

Table 34. BF settings

Setting Designation Range Default

Operating mode Mode Enable/Disable Disable

Pickup current Ip 20-6000A 6000A

6.1.2.3 Earth Fault (EF) This element provides protection against single phase and current dependent Tripping time (Tt) defined by the time current double phase earth faults. characteristic TCC curves. When this time expires and the residual current still exceeds a dropout value, EF2 initiates a trip EF protection consist of six (6) individual overcurrent protection request to the driver to open the recloser. If the residual current elements providing three stages of protection for both the Direct is lower than the dropout value whilst the timer is active, then a (Source+) and Reverse power flow (Source-) directions: EF1+, reset timer is activated which expires in accordance to the EF1-, EF2+, EF2-, EF3+, EF3-. current dependent value of (Tres) after which this element EF1 becomes passive again. Earth fault low set element EF1 is designated to provide time The element is blocked when the following signals are activated: delayed trips. It is enabled in any selected sequence in the Ÿ SD = "Source lost"; Overcurrent Reclosing element. "I" (Instantaneous) stands for accelerated and "D" (Delayed) for delayed step of overcurrent Ÿ Hot Line On; protection in an autoreclosing sequence. Ÿ Protection Off; The operation of the element can be described as follows: It Ÿ Earth Fault Off. becomes active when the residual current exceeds the Pickup current value (Ip) and a timer is activated for the duration of the It is also blocked by the AR OC element if it is executing a delayed current dependent Tripping time (Tt) defined by the time current (D) trip sequence step. characteristic TCC curves. When this time expires and the phase Available TCC are presented in Table 35. EF2 settings are current still exceeds a dropout value, EF1 initiates a trip request described in Tables 37–41. to the driver to open the recloser. If the residual current is lower than the dropout value whilst the timer is active, then a reset EF3 timer is activated which expires in accordance to the current Earth fault high set instantaneous element provides protection dependent value (Tres) after which this element becomes against high earth current faults with a reduced number of trips passive again. to lockout. If there is no intention to reduce the number of trips to The element is blocked when the following signals are activated: lockout at high current faults, enabling this element is not recommended. EF1 and EF2 allow reduction of tripping time to Ÿ SD = "Source lost"; any desired value at high currents. Ÿ Hot Line On; The operation of the element can be described as follows: It Ÿ Protection Off; becomes active when the residual current exceeds the Pickup current value (Ip) and a timer is activated for the duration of the Ÿ Earth Fault Off. set Tripping time (Tt). When this time expires and the residual Available TCC are presented in Table 35. EF1 settings are current still exceeds a dropout value, EF3 initiates a trip request described in Tables 37–41. to the driver to open the recloser. EF2 The element is blocked when the following signals are activated: Earth fault low set element EF2 is designated to provide Ÿ SD = "Source lost"; accelerated trips. If a sequence step in the Overcurrent Ÿ Hot Line On; Reclosing Element is set "D" EF2 element is disabled. If the sequence step in the Overcurrent Reclosing element is set "I" Ÿ Protection Off; EF2 element is enabled. Ÿ Earth Fault Off. The operation of the element can be described as follows: It Ef3 element settings are described in Table 36. Only TD TCC is becomes active when the residual current exceeds the Pickup available for this high set protection element. current value (Ip) and a timer is activated for the duration of the 50 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Table 35. TCC types

Setting Designation Range Default

ANSI: Extremely Inverse (EI), Moderately Inverse (MI), Very Inverse (VI)

Type of time IEC: Extremely Inverse (EI), Very Inverse (VI), Inverse (I) current TCC1 TD characteristic Deﬁnite Time (TD)

TEL A, TEL I (custom): custom curves are available on request

Note: 1 Refer to "Appendix 2. TCC" for more detailed information Table 36. High set elements TD TCC settings (OC3/EF3)

Setting Designation Range Resolution Default

Operating mode Mode Enable/Disable n.a. Disable

Pickup current, A Ip 40-6000 1 40

Tripping time, s Tt 0.00-2.00 0.01 0.00

Table 37. Low set elements TD TCC settings (OC1/EF1, OC2/EF2)

Setting Designation Range Step size Default

Tripping time, s Tt 0.00-100.00 0.01 10.00

Pickup current, A Ip 101 -6000 1 100

Note: 1 EF1/EF2 minimum setting 5A Table 38. Available IEC TCC with parameters

TCC type Designation A n

Extremely Inverse IEC EI 80 2.0

Very Inverse IEC VI 13.5 1.0

Inverse IEC I 0.14 0.02 51 TECHNICAL MANUAL

Table 39. Low set elements IEC TCC settings (OC1/EF1, OC2/EF2)

Setting Designation Range Step size Default

Asymptote current, A Ias 101 -1280 1 100

Time multiplier Tm 0.01-15.00 0.01 1.00

Minimum time, s Tmin 0.05-100.00 0.01 0.05

Maximum time, s Tmax 0.05-100.00 0.01 10.00

Pickup current, A Ip 10-6000 1 100

Time adder, s Ta 0.00-2.00 0.01 0.00

Reset time, s Tres 0.00-20.00 0.01 0.00

Note:

1 EF1/EF2 minimum setting 5A Table 40. Available ANSI TCC with parameters

TCC type Designation A B D n

Extremely Inverse ANSI EI 28.2 1.217 29.1 2.0

Very Inverse ANSI VI 19.61 0.114 21.6 2.0

Moderately Inverse ANSI MI 0.0515 0.114 4.85 0.02

Table 41. Low set elements ANSI TCC settings (OC1/EF1, OC2/EF2)

Setting Designation Range Step size Default

Asymptote current, A Ias 101 -1280 1 100

Time multiplier Tm 0.01-15.00 0.01 1.00

Minimum time, s Tmin 0.05-100.00 0.01 0.05

Maximum time, s Tmax 0.05-100.00 0.01 10.00

Pickup current, A Ip 10-6000 1 100

Time adder, s Ta 0.00-2.00 0.01 0.00

Note: 1 EF1/EF2 minimum setting 5A 6.1.2.4 Phase and Earth Overcurrent Autoreclosing (AR OC) The AR OC element provides reclosing initiated by tripping of one of OC1, OC2, EF1, EF2, OC3 or EF3 elements. It also provides Zone Sequence Coordination (ZSC), REZIP functionality and optional suspending the autoreclosing in case line parameters do not correspond to VRC settings. The user set delay between trip and reclose is called Reclose time (Tr) and can be set differently for each trip in a sequence. If the fault still exists the recloser will trip again under protection. This will happen a number of times until the fault is cleared or the AR OC element reaches the end of the user deﬁned reclose sequence. At this point the recloser remains open and will not reclose automatically anymore. This is known as lockout and the recloser can only be closed by local or remote operator command, which clears the lockout 52 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

condition. To control the number of trips to lockout in a reclosing sequence, the number has to be set. It can be selected individually for low set (Nt) and high set (Nhs) protection elements, while Nhs cannot exceed Nt. If the high set elements (OC3, EF3) are enabled they can initiate trip during the whole reclosing sequence deﬁned by Nt. But only for trips 1..Nhs-1 it could be the trip to reclose. Finally the reclosing sequence (Seq) has to be selected. The Seq setting consists of i=1..Nt characters. Seq[i]="I" means that the corresponding trip in sequence is set instantaneous, Seq[i]="D" means that it is set to delayed. Each character enables or disables the operation of instantaneous (OC2, EF2) elements on the corresponding step in sequence (counting characters from the left to the right). Reclosing will be made only if the voltage from source side of reclosers (recloser is open) meets the requirements of VRC element. Otherwise, recloser will not reclose and indicate "Reclosing suspended by VRC" in the Event log. If the voltage did not recover until Autoreclosing timeout is expired, the recloser will go to lockout. Single shot to lockout algorithm is supported by the AR OC element. This function allows to trip to lockout (without autoreclosing) if a fault has been detected during Reset time (Tres) after operator closing into a fault. The element also proceeds to open to lockout without reclosing when the following signals are activated: Ÿ SD = "Source lost"; Ÿ Hot Line On; Ÿ Autoreclosing Off. AR OC settings are described in Tables 42, 43.

Table 42. Radial line recloser AR OC element settings

Setting Designation Range Default

Operating mode Mode Normal/Rezip/ZSC ZSC

Mode = Normal/ZSC 1/2/3/4 4 Number of trips to lockout Nt Mode = Rezip 2/3/4 2

Highset trips to lockout Nhs 1/2/3/41 1

For 4 trips to lockout: IIII/IIID/IIDD/IDDD/DDDD/DDDI/D DII/ DIII/ IIDI/IDII/IDDI Mode = Normal/ZSC For 3 trips to lockout: IIDD III/IID/IDD/DDD/DDI/DII/IDI Reclosing sequence2,3 Seq For 2 trips to lockout: II/ID/DD/DI For 1 trip to lockout: I/D

For 4 trips to lockout: DIII Mode = Rezip n.a. For 3 trips to lockout: DII For 2 trips to lockout: DI

Mode = Normal/ZSC Accelerate, Decelerate, Normal, Normal First closure mode SST mode Unconditional AR4

Mode = Rezip n.a. Accelerate

Mode = Normal/ZSC 0.10-1800.00 1.00 First reclose time, s Tr1 Mode = Rezip 0.20-1800.00 0.20

Second reclose time, s Tr2 1.00-1800.00 10.00

Third reclose time, s Tr3 1.00-1800.00 30.00 53 TECHNICAL MANUAL

Setting Designation Range Default

Mode = Normal/ZSC 1-180 1 Reset time, s3 Tres Mode = Rezip n.a. 0.10

Table 43. Ring line recloser AR OC element settings

Setting Designation Range Default

Operating mode Mode Normal/Rezip/ZSC ZSC

Mode = Normal/ZSC 1/2/3/4 4 Number of trips to lockout+ Nt+ Mode = Rezip 2/3/4 2

Highset trips to lockout+ Nhs+ 1/2/3/41 1

For 4 trips to lockout: IIII/IIID/IIDD/IDDD/DDDD/DDDI/D DII/ DIII/ IIDI/IDII/IDDI Mode = Normal/ZSC For 3 trips to lockout: IIDD III/IID/IDD/DDD/DDI/DII/IDI Reclosing sequence+2,3 Seq+ For 2 trips to lockout: II/ID/DD/DI For 1 trip to lockout: I/D

For 4 trips to lockout: DIII Mode = Rezip n.a. For 3 trips to lockout: DII For 2 trips to lockout: DI

Mode = Normal/ZSC Accelerate, Decelerate, Normal, Normal First closure mode+ SST mode+ Unconditional AR4

Mode = Rezip n.a. Accelerate

Mode = Normal/ZSC 0.10-1800.00 1.00 First reclose time+, s Tr1+ Mode = Rezip 0.20-1800.00 0.20

Second reclose time+, s Tr2+ 1.00-1800.00 10.00

Third reclose time+, s Tr3+ 1.00-1800.00 30.00

Mode = Normal/ZSC 1-180 1 Reset time+, s3 Tres+ Mode = Rezip n.a. 0.10 54 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Setting Designation Range Default

Mode = Normal/ZSC 1/2/3/4 4 Number of trips to lockout- Nt- Mode = Rezip 2/3/4 2

Highset trips to lockout- Nhs- 1/2/3/41 1

For 4 trips to lockout: IIII/IIID/IIDD/IDDD/DDDD/DDDI/D DII/ DIII/ IIDI/IDII/IDDI Mode = Normal/ZSC For 3 trips to lockout: IIDD III/IID/IDD/DDD/DDI/DII/IDI Reclosing sequence-2,3 Seq- For 2 trips to lockout: II/ID/DD/DI For 1 trip to lockout: I/D

For 4 trips to lockout: DIII Mode = Rezip n.a. For 3 trips to lockout: DII For 2 trips to lockout: DI

Mode = Normal/ZSC Accelerate, Decelerate, Normal, Normal First closure mode- SST mode- Unconditional AR4

Mode = Rezip n.a. Accelerate

Mode = Normal/ZSC 0.10-1800.00 1.00 First reclose time-, s Tr1- Mode = Rezip 0.20-1800.00 0.20

Second reclose time-, s Tr2- 1.00-1800.00 10.00

Third reclose time-, s Tr3- 1.00-1800.00 30.00

Mode = Normal/ZSC 1-180 1 Reset time-, s3 Tres- Mode = Rezip n.a. 0.10

Note: 1 Nhs cannot exceed Nt. When enabled, the high set elements (OC3, EF3) can initiate a trip during the reclosing sequence as deﬁned by Nt 2 The Reclosing Sequence Seq setting consists of 1 to Nt characters. Each character enables or disables the operation of instantaneous (OC2, EF2) elements at the corresponding auto-reclosing step in sequence (counting characters from the left to the right). Seq[i]="I" means that the i-th trip in sequence is set to ninstantaneous, Seq[i]="D" means that the i-th trip in sequence is set to delayed 3 If Mode is Rezip, the setting has ﬁxed value and is unavailable (hidden) 4 If SSTMode is Unconditional AR and the Nt is 4, then the RC forbids to set the Tr1, Tr2, Tr3 in sum less than 60 seconds (the sum of Tr1+Tr2+Tr3 must be above 60 seconds to perform full autoreclosing cycle started with Close operation – CO-CO-CO-CO) REZIP The AR OC provides Rezip automation algorithm that enables complex distribution network automation. Rezip can be used in networks where the recloser application is not possible due to protection coordination restrictions. The algorithm is initiated by an upstream recloser trip. Once the loss of supply is detected, all Rezip reclosers will trip during recloser dead-time. When the recloser closes, it restores supply to the closest Rezip recloser(s). It activates the ARLS timer and after a preset time Rezip reclosers will close restoring the power supply to downstream Rezip recloser(s). Immediately after closure Rezip the recloser(s) are operating in Instantaneous protection mode and if any of them detects the fault, it will trip before the upstream protection device will. By the time next Rezip recloser is closer by the ARLS, the upstream Rezip OC/EF protection is disabled, so no grading between Rezip reclosers is needed. 55 TECHNICAL MANUAL

The algorithm provides the set-up simplicity of a traditional sectionalizer and at the same time reducing the fault clearing time and network reconﬁguration time application in far more complex networks and provide an unlimited number of sections to limit the number of customers affected. Rezip is applicable in meshed grid automation schemes together with ABR functionality. Rezip enables the building of self-healing networks where it is not possible with conventional reclosers and sectionalizers. Zone Sequence Coordination (ZSC) The AR OC provides Zone Sequence Coordination (ZSC). ZSC forces the AR OC element to step to the next count in the reclose sequence on reset of all protection elements if it detects a downstream protection device has operated. This functionality is required for applications where a fuse-saving philosophy is used.

6.1.2.5 Loss of Supply (LS) The LS element provides tripping resulted from loss of supply. This functionality is applicable for sectionalizing recloser in order to support automatic backfeed restoration. The operation of the element can be described as follows: It is passive as long as SD reports a source present. It becomes active when the SD cannot ﬁnd a source and a timer is activated for the duration of the set Tripping time (Tt). When this time expires and the source is still not found, LS initiates a trip request to the driver to open the recloser. If the source is found whilst the timer is active, this element becomes passive again and the timer is reset. The element is blocked when the following signals are activated: Ÿ Protection Off. LS settings are described in Table 44. Table 44. LS element settings

Setting Designation Range Resolution Default

Operating mode Mode Enable/Disable n.a. Disable

Tripping time, s Tt 0.10 - 100.00 0.01 10.00

6.1.2.6 Loss of Supply Autoreclosing (ARLS) The ARLS element provides reclosing initiated by the LS element tripping. The user set delay between power supply restoration and reclose is called Reclose time (Tr). If loss of supply occurs again prior to reset time expiration, the recloser will trip again and will not reclose automatically. This is known as "lockout" and the recloser can only be closed by local or remote operator command, which clears the lockout condition. The element also proceeds to open to lockout without reclosing when the following signals are activated: Ÿ Hot Line On; Ÿ Autoreclosing Off. ARLS settings are described in Table 45. Table 45. ARLS element settings

Setting Designation Range Default

Operating mode Mode Normal/Rezip Normal

Mode = Normal 1/2 1 Number of trips to lockout1 Nt Mode = Rezip NA 2

Mode = Normal 0.10 - 180.00 10.00 Reclose time, s Tr Mode = Rezip 0.20 - 180.00 0.20

Note: 1 In Rezip mode this setting has a ﬁxed value and is unavailable (hidden) 56 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

6.1.2.7 Hot Line (HL) The HL element consists of two sub-elements which provide protection against short circuit faults during Hot Line maintenance. It generally has more sensitive settings than corresponding OC/EF settings and it has no reclosing functions. HL consists of two Overcurrent elements, one for Phase Overcurrent (HLOC) and one for Earth Fault (HLEF). Operation of either element results in the trip to lockout. The operation of HLOC can be described as follows: It starts counting the user set Tripping time (Tt), when the phase current exceeds the Pickup current value (Ip). When this time expires and the phase current still exceeds the Pickup current value, HLOC initiates a trip request to the driver to open the recloser. The operation of HLEF can be described as follows: It starts timing the user set Tripping time (Tt), when the residual current In exceeds the Pickup current value (Ip). When this time expires and the residual current still exceeds the Pickup current value, HLEF initiates a trip request to the driver to open the recloser. The elements are blocked when the following signals are activated: Ÿ SD = "Source lost"; Ÿ Hot Line Off; Ÿ Protection Off. HL settings are described in Tables 46-49. Table 46. Radial line recloser HLOC element settings

Setting Designation Range Resolution Default

Pickup current, A Ip 10-1280 1 10

Tripping time, s Tt 0.10 - 100.00 0.01 0.00

Table 47. Ring line recloser HLOC element settings

Setting Designation Range Resolution Default

Pickup current +, A Ip + 10-1280 1 10

Tripping time +, s Tt + 0.00-2.00 0.01 0.00

Pickup current -, A Ip - 10-1280 1 10

Tripping time -, s Tt - 0.00-2.00 0.01 0.00

Table 48. Radial line recloser HLEF element settings

Setting Designation Range Resolution Default

Pickup current, A Ip 4-1280 1 4

Tripping time, s Tt 0.00-2.00 0.01 0.00

Table 49. Ring line recloser HLEF element settings

Setting Designation Range Resolution Default

Pickup current +, A Ip + 4-1280 1 4

Tripping time +, s Tt + 0.00-2.00 0.01 0.00

Pickup current -, A Ip - 4-1280 1 4

Tripping time -, s Tt - 0.00-2.00 0.01 0.00 57 TECHNICAL MANUAL

6.1.2.8 Sensitive Earth Fault (SEF) The SEF element provides protection against high impedance earth faults. SEF detects a fault by using two different algorithms: “Current”; “Current and angle”. If the fault identiﬁcation type is set to the "current" mode, the operation of the element can be described as follows: It starts timing the user set Tripping time (Tt), when the residual current exceeds the Pickup current value (Ip). When this time expires and the residual current still exceeds the Pickup current value, SEF initiates a trip request to the driver to open the recloser. If the fault identiﬁcation type is set to the “current and angle“ mode, the recloser uses voltage and current measurements to calculate the phase angle between the zero sequence voltage and residual current. The user sets a torque angle (At) for sensitive earth fault protection. When a fault occurs, the phase angle between the zero sequence voltage and residual current is calculated. Tripping is subject to the two following conditions: 1) The current is greater than the threshold; 2) The phase angle between the zero sequence voltage and residual current is in the zone within +/- 90 degrees of the torque angle At. SEF operation in the “current and angle“ mode is illustrated in Figure 47.

Tripping zone

Non-tripping zone At An

Fig.47. SEF operation in “current and angle“ mode Where: Un - zero sequence voltage; In - residual current; An - phase angle between zero sequence voltage Un and residual current In; At - preset torque angle. The element is blocked when the following signals are activated: Ÿ SD = "Source lost"; Ÿ OC/EF = "Timing up"; Ÿ Hot Line On; Ÿ Protection Off; Ÿ Earth Fault Off. SEF settings are described in Tables 49-52. 58 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Table 50. Radial line recloser SEF element settings

Setting Designation Range Resolution Default

Operating mode Mode Disable/Alarm/Trip n.a. Trip

Fault identiﬁcation type Type Current/Current and angle n.a. Current

Type = Current TD, TEL I n.a. Time current TCC TD characteristic Type = Current and angle TD n.a.

Type = Current n.a. n.a. n.a. Torque angle, ° At Type = Current and angle 0-359 1 0

Table 51. Radial line recloser SEF element TD settings

Setting Designation Range Resolution Default

Pickup current, A Ip 1-80 1 4

Tripping time, s Tt 0.010-100.00 0.01 10.00

Table 52. Ring line recloser SEF element settings

Setting Designation Range Resolution Default

Operating mode + Mode + Disable/Alarm/Trip n.a. Trip

Fault identiﬁcation type + Type + Current/Current and angle n.a. Current

Type = Current TD, TEL I n.a. Time current TCC + TD characteristic + Type = Current and angle TD n.a.

Type = Current n.a. n.a. n.a. Torque angle +, ° At + Type = Current and angle 0-359 1 0

Operating mode - Mode - Disable/Alarm/Trip n.a. Trip

Fault identiﬁcation type - Type - Current/Current and angle n.a. Current

Type = Current TD, TEL I n.a. Time current TCC - TD characteristic - Type = Current and angle TD n.a.

Type = Current n.a. n.a. n.a. Torque angle -, ° At - Type = Current and angle 0-359 1 0 59 TECHNICAL MANUAL

Table 53. Ring line recloser SEF element TD settings

Setting Designation Range Resolution Default

Pickup current +, A Ip + 1-80 1 4

Tripping time +, s Tt + 0.010-100.00 0.01 10.00

Pickup current -, A Ip - 1-80 1 4

Tripping time -, s Tt - 0.010-100.00 0.01 10.00

6.1.2.9 Sensitive Earth Fault Autoreclosing (AR SEF) The AR SEF element provides reclosing initiated by the SEF element operation. It also supports single shot to lockout functionality. The operation of AR SEF is similar to that of AR OC element. Zone Sequence Coordination (ZSC) and REZIP functionality are not applicable for AR SEF. The element also proceeds to open to lockout without reclosing when the following signals are activated: Ÿ SD = "Source lost"; Ÿ Hot Line On; Ÿ Autoreclosing Off. AR SEF settings are described in Tables 54, 55. Table 54. Radial line recloser AR SEF element

Setting Designation Range Resolution Default

Number of trips to lockout Nt 1/2/3/4 n.a. 3

First reclose time, s Tr1 0.10-180.00 0.01 1.00

Second reclose time, s Tr2 1.00-180.00 0.01 10.00

Third reclose time, s Tr3 1.00-180.00 0.01 30.00

Reset time, s Tres 1-180 1 1

Table 55. Ring line recloser AR SEF element settings

Setting Designation Range Resolution Default

Number of trips to lockout + Nt + 1/2/3/4 n.a. 3

First reclose time +, s Tr1 + 0.10-180.00 0.01 1.00

Second reclose time +, s Tr2 + 1.00-180.00 0.01 10.00

Third reclose time +, s Tr3 + 1.00-180.00 0.01 30.00

Reset time +, s Tres + 1-180 1 1

Number of trips to lockout - Nt - 1/2/3/4 n.a. 3

First reclose time +, s Tr1 - 0.10-180.00 0.01 1.00

Second reclose time -, s Tr2 - 1.00-180.00 0.01 10.00 60 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Setting Designation Range Resolution Default

Third reclose time -, s Tr3 - 1.00-180.00 0.01 30.00

Reset time -, s Tres - 1-180 1 1

6.1.2.10 Voltage Unbalance (VU) The VU element provides protection of sensitive load against an upstream broken wire. It is generally applied when an upstream device cannot provide relevant protection. Otherwise it is generally disabled. The operation of the element can be described as follows: It becomes active when the negative sequence voltage measured from Source + Side (U2+) exceeds the Voltage Unbalance (Uu) multiplied by the positive sequence voltage measured from Source + Side (U1+). Then a timer is activated for the duration of the set Tripping time (Tt). When this time expires and U2 still exceeds a dropout value , VU initiates a trip request to the driver to open the recloser. The element is blocked when the following signals are activated: Ÿ SD = "Source lost"; Ÿ OC/EF = "Timing up"; Ÿ SEF = "Timing up"; Ÿ Protection Off. VU settings are described in Tables 56, 57. Table 56. Radial line recloser VU element settings

Setting Designation Range Resolution Default

Operating mode Mode Enable/Disable n.a. Disable

Voltage unbalance Uu 0.05-1.00 0.01 0.10

Tripping time, s Tt 0.10-100.00 0.01 10.00

Table 57. Ring line recloser VU element settings

Setting Designation Range Resolution Default

Operating mode + Mode + Enable/Disable n.a. Disable

Voltage unbalance + Uu + 0.05-1.00 0.01 0.10

Tripping time +, s Tt + 0.10-100.00 0.01 10.00

Operating mode - Mode - Enable/Disable n.a. Disable

Voltage unbalance - Uu - 0.05-1.00 0.01 0.10

Tripping time -, s Tt - 0.10-100.00 0.01 10.00 61 TECHNICAL MANUAL

6.1.2.11 Current Unbalance (CU) The CU element provides protection against downstream broken wire. It is generally applied for protection of three phase loads sensitive to voltage unbalance, for example, electrical motors. The operation of the element can be described as follows: It becomes active when the negative sequence current (I2) exceeds the positive sequence current multiplied (I1) by the Current Unbalance setting (Iu) and the Minimum I2 setting (I2min) . A timer is activated for the duration of the set Tripping time (Tt). When this time expires and the negative sequence current still exceeds a dropout value , CU initiates a trip request to the driver to open the recloser. The element is blocked when the following signals are activated: Ÿ SD = "Source lost"; Ÿ OC/EF = "Timing up"; Ÿ SEF = "Timing up"; Ÿ VU = "Timing up"; Ÿ Protection Off. CU settings are described in Tables 58, 59. Table 58. Radial line recloser CU element settings

Setting Designation Range Default

Operating mode Mode Enable/Disable Disable

Current unbalance Iu 0.05-1.00 0.2

Minimum I2 I2min 1-80A 10

Tripping time Tt 0.10-300.00s 10.00

Table 59. Ring line recloser CU element

Setting Designation Range Default

Operating mode + Mode + Enable/Disable Disable

Current unbalance + Iu + 0.05-1.00 0.20

Minimum I2 + I2min 1-80A 10

Tripping time + Tt + 0.10-300.00s 10.00

Operating mode - Mode - Enable/Disable Disable

Current unbalance - Iu - 0.05-1.00 0.20

Minimum I2 - I2min 1-80A 10

Tripping time - Tt - 0.10-300.00s 10.00

6.1.2.12 Voltage Reclosing Control (VRC) The VRC element monitors the quality of the high voltage power supply. It blocks reclosing initiated by any AR element when voltage and/or frequency do not meet user set values. The operation of the element can be described as follows: It becomes active (power failure) when either the positive sequence voltage measured from Source "+" side (U1+) is less than the phase voltage multiplied by Pickup voltage multiplier (Up-) or when the Frequency measured from Source "+" side (F+) is less than the Pickup Frequency (Fp). It becomes passive (power good) as soon as both (U1+) and (F+) exceed the above requirements. VRC settings are described in Tables 60, 61. 62 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Table 60. Radial line recloser VRC element settings

Setting Designation Range Default

Voltage unbalance mode VU control mode Enable/Disable Enable

Neutral voltage shift mode NVS control mode Enable/Disable Enable

Over voltage mode OV control mode Enable/Disable Enable

Under voltage mode UV control mode Enable/Disable Enable

Under frequency mode UF control mode Enable/Disable Enable

Over frequency mode OF control mode Enable/Disable Enable

Voltage unbalance VUp 0.05-1.00 0.20

Neutral voltage shift NVSp 0.05-1.00 0.40 (zero sequence voltage)

Pickup overvoltage multiplier OVp 1.00-1.30 1.20

Pickup undervoltage multiplier UVp 0.60-1.00 0.80

45.00 - 49.99 for Frated=50Hz 49.50 for Frated=50Hz Pickup underfrequency, Hz UFp 55.00 - 59.99 for Frated=60Hz 59.50 for Frated=60Hz

50.01 - 55.00 for Frated=50Hz 50.50 for Frated=50Hz Pickup overfrequency, Hz OFp 60.01 - 65.00 for Frated=60Hz 60.50 for Frated=60Hz

Table 61 Ring line recloser VRC element settings

Setting Designation Range Default

Voltage unbalance mode VU control mode Enable/Disable Enable

Neutral voltage shift mode NVS control mode Enable/Disable Enable

Over voltage mode OV control mode Enable/Disable Enable

Under voltage mode UV control mode Enable/Disable Enable

Under frequency mode UF control mode Enable/Disable Enable

Over frequency mode OF control mode Enable/Disable Enable

Voltage unbalance + VUp + 0.05-1.00 0.20

Neutral voltage shift + NVSp + 0.05-1.00 0.40 (zero sequence voltage)

Pickup overvoltage multiplier + OVp + 1.00-1.30 1.20

Pickup undervoltage multiplier + UVp + 0.60-1.00 0.80

45.00 - 49.99 for Frated=50Hz 49.50 for Frated=50Hz Pickup underfrequency +, Hz UFp + 55.00 - 59.99 for Frated=60Hz 59.50 for Frated=60Hz 63 TECHNICAL MANUAL

Setting Designation Range Default

50.01 - 55.00 for Frated=50Hz 50.50 for Frated=50Hz Pickup overfrequency +, Hz OFp + 60.01 - 65.00 for Frated=60Hz 60.50 for Frated=60Hz

Voltage unbalance - VUp - 0.05-1.00 0.20

Neutral voltage shift - NVSp - 0.05-1.00 0.40 (zero sequence voltage)

Pickup overvoltage multiplier - OVp - 1.00-1.30 1.20

Pickup undervoltage multiplier - UVp - 0.60-1.00 0.80

45.00 - 49.99 for Frated=50Hz 49.50 for Frated=50Hz Pickup underfrequency -, Hz UFp - 55.00 - 59.99 for Frated=60Hz 59.50 for Frated=60Hz

50.01 - 55.00 for Frated=50Hz 50.50 for Frated=50Hz Pickup overfrequency -, Hz OFp - 60.01 - 65.00 for Frated=60Hz 60.50 for Frated=60Hz

6.1.2.13 Undervoltage (UV) The UV element provides a trip command when the voltage falls below a set value. The operation of the element can be described as follows: It becomes active when the positive sequence voltage measured from Source "+" side (U1+) is less than the phase rated voltage (Urated/1.732) multiplied by the Pickup voltage multiplier (Up). A timer is activated for the duration of the set Tripping time (Tt). When this time expires and U1+ still exceeds a dropout value , UV initiates a trip request to the driver to open the recloser. The element is blocked when the following signals are activated: Ÿ SD = "Source lost"; Ÿ OC/EF = "Timing up"; Ÿ SEF = "Timing up"; Ÿ VU = "Timing up;" Ÿ Protection Off. UV settings are described in Tables 62, 63. Table 62. Radial line recloser UV element settings

Setting Designation Range Resolution Default

Operating mode Mode Enable/Disable n.a. Disable

Pickup voltage multiplier Up 0.60-1.00 0.01 0.80

Tripping time, s Tt 0.10-100.00 0.01 10.00 6064 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Table 63. Ring line recloser UV element settings

Setting Designation Range Resolution Default

Operating mode + Mode + Enable/Disable n.a. Disable

Pickup voltage multiplier + Up + 0.60-1.00 0.01 0.80

Tripping time +, s Tt + 0.10-100.00 0.01 10.00

Operating mode - Mode - Enable/Disable n.a. Disable

Pickup voltage multiplier - Up - 0.60-1.00 0.01 0.80

Tripping time -, s Tt - 0.10-100.00 0.01 10.00

6.1.2.14 Undervoltage Autoreclosing (AR UV) The AR UV element provides reclosing initiated by the UV element. It also provides single shot to lockout functionality to avoid multiple reclosing in case of incorrect pickup coordination, settings of VRC and UV elements. The element also proceeds to open to lockout without reclosing when the following signals are activated: Ÿ SD = "Source lost"; Ÿ Hot Line On; Ÿ Autoreclosing Off. AR UV settings are described in Tables 64, 65. Table 64. Radial line recloser AR UV element settings

Setting Designation Range Resolution Default

Number of trips to lockout Nt 1/2 n.a. 1

Reclose time, s Tr 0.10-180.00 0.01 10.00

Table 65. Ring line recloser AR UV element settings

Setting Designation Range Resolution Default

Number of trips to lockout + Nt + 1/2 n.a. 1

Reclose time +, s Tr + 0.10-180.00 0.01 10.00

Number of trips to lockout - Nt - 1/2 n.a. 1

Reclose time -, s Tr - 0.10-180.00 0.01 10.00 65 TECHNICAL MANUAL

6.1.2.15 Overvoltage (OV) The OV element provides load protection and detects high source voltage. The operation of the element can be described as follows: It becomes active when the positive sequence voltage measured from the Source "+" side (U1+) is greater than the phase rated voltage (Urated/1.732) multiplied by the Pickup voltage multiplier (Up). A timer is activated for the duration of the set Tripping time (Tt). When this time expires and U1+ still exceeds the dropout value, OV initiates a trip request to the driver to open the recloser. The element is blocked when the following signals are activated: Ÿ SD = "Source lost"; Ÿ OC/EF = "Timing up"; Ÿ SEF = "Timing up"; Ÿ VU = "Timing up"; Ÿ Protection Off. OV settings are described in Tables 66, 67. Table 66. Radial line recloser OV element settings

Setting Designation Range Resolution Default

Operating mode Mode Enable/Disable n.a. Disable

Pickup voltage multiplier Up 1.00-1.40 0.01 1.05

Tripping time, s Tt 0.10-100.00 0.01 10.00

Table 67. Ring line recloser OV element settings

Setting Designation Range Resolution Default

Operating mode + Mode + Enable/Disable n.a. Disable

Pickup voltage multiplier + Up + 1.00-1.40 0.01 1.05

Tripping time +, s Tt + 0.10-100.00 0.01 10.00

Operating mode - Mode - Enable/Disable n.a. Disable

Pickup voltage multiplier - Up - 1.00-1.40 0.01 1.05

Tripping time -, s Tt - 0.10-100.00 0.01 10.00

6.1.2.16 Overvoltage Autoreclosing (AR OV) The AR OV element provides reclosing initiated by the OV element. It also provides single shot to lockout functionality to avoid multiple reclosing in case of incorrect pickup coordination or settings of VRC and OV elements. The element also proceeds to open to lockout without reclosing when the following signals are activated: Ÿ SD = "Source lost"; Ÿ Hot Line On; Ÿ Autoreclosing Off. AR OV settings are described in Tables 68, 69. 66 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Table 68. Radial line recloser AR OV element settings

Setting Designation Range Resolution Default

Number of trips to lockout Nt 1/2 n.a. 1

Reclose time, s Tr 0.10-300.00 0.01 10.00

Table 69. Ring line recloser AR OV element settings

Setting Designation Range Resolution Default

Number of trips to lockout + Nt + 1/2 n.a. 1

Reclose time +, s Tr + 0.10-300.00 0.01 10.00

Number of trips to lockout - Nt - 1/2 n.a. 1

Reclose time -, s Tr - 0.10-300.00 0.01 10.00

6.1.2.17 Underfrequency (UF) The UF element provides load protection and detects low system frequency. The operation of the element can be described as follows: It counts the user set Tripping time (Tt) when the Frequency measured from Source "+" side (F+) is less than the Pickup Frequency (Fp). When this time expires and F+ still exceeds the dropout value (Fp+0.05Hz), UF initiates a trip request to the driver to open the recloser. The element is blocked when the following signals are activated: Ÿ SD = "Source lost"; Ÿ OC/EF = "Timing up"; Ÿ SEF = "Timing up"; Ÿ VU = "Timing up"; Ÿ Protection Off. UF settings are described in Tables 70, 71. Table 70. Radial line recloser UF element settings

Setting Designation Range Resolution Default

Operating mode Mode Enable/Disable n.a. Disable

45.00-50.00 Hz for rated frequency=50 Hz 45.00 Pickup frequency, Hz Fp 0.01 55.00-60.00 Hz for rated frequency=60 Hz 55.00

Tripping time, s Tt 0.10-180.00 0.01 0.10 67 TECHNICAL MANUAL

Table 71. Ring line recloser UF element settings

Setting Designation Range Resolution Default

Operating mode + Mode + Enable/Disable n.a. Disable

45.00-50.00 Hz for rated frequency=50 Hz 45.00 Pickup frequency +, Hz Fp + 0.01 55.00-60.00 Hz for rated frequency=60 Hz 55.00

Tripping time +, s Tt + 0.10-180.00 0.01 0.10

Operating mode - Mode - Enable/Disable n.a. Disable

45.00-50.00 Hz for rated frequency=50 Hz 45.00 Pickup frequency -, Hz Fp - 0.01 55.00-60.00 Hz for rated frequency=60 Hz 55.00

Tripping time -, s Tt - 0.10-180.00 0.01 0.10

6.1.2.18 Underfrequency Autoreclosing (AR UF) The AR UF element provides reclosing initiated by the UF element. It also provides single shot to lockout functionality to avoid multiple reclosing in case of incorrect voltage pickup coordination, settings of VRC and UF elements. The element also proceeds to open to lockout without reclosing when the following signals are activated: Ÿ SD = "Source lost"; Ÿ Hot Line On; Ÿ Autoreclosing Off. AR UF settings are described in Tables 72, 73. Table 72. Radial line recloser AR UF element settings

Setting Designation Range Resolution Default

Number of trips to lockout Nt 1/2 n.a. 1

Reclose time, s Tr 0.10-180.00 0.01 10.00

Table 73. Ring line recloser AR UF element settings

Setting Designation Range Resolution Default

Number of trips to lockout + Nt + 1/2 n.a. 1

Reclose time +, s Tr + 0.10-180.00 0.01 10.00

Number of trips to lockout - Nt - 1/2 n.a. 1

Reclose time -, s Tr - 0.10-180.00 0.01 10.00 68 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

6.1.2.19 Overfrequency (OF) The OF element provides reclosing initiated by the UF element operation. The operation of the element can be described as follows: It counts the user set Tripping time (Tt) when the Frequency measured from Source "+" side (F+) is greater than the Pickup Frequency (Fp). When this time expires and F+ still exceeds the dropout value (Fp+0.05Hz), OF initiates a trip request to the driver to open the recloser. The element is blocked when the following signals are activated: Ÿ SD = "Source lost"; Ÿ OC/EF = "Timing up"; Ÿ SEF = "Timing up"; Ÿ VU = "Timing up"; Ÿ Protection Off. OF settings are described in Tables 74, 75. Table 74. Radial line recloser OF element settings

Setting Designation Range Resolution Default

Operating mode Mode Enable/Disable n.a. Disable

50.00-55.00 for rated frequency=50 Hz 55.00 Pickup frequency, Hz Fp 0.01 60.00-65.00 for rated frequency=60 Hz 65.00

Tripping time, s Tt 0.10-180.00 0.01 1.00

Table 75. Ring line recloser OF element settings

Setting Designation Range Resolution Default

Operating mode + Mode + Enable/Disable n.a. Disable

50.00-55.00 for rated frequency=50 Hz 55.00 Pickup frequency +, Hz Fp + 0.01 60.00-65.00 for rated frequency=60 Hz 65.00

Tripping time +, s Tt + 0.10-180.00 0.01 1.00

Operating mode - Mode - Enable/Disable n.a. Disable

50.00-55.00 for rated frequency=50 Hz 55.00 Pickup frequency -, Hz Fp - 0.01 60.00-65.00 for rated frequency=60 Hz 65.00

Tripping time -, s Tt - 0.10-180.00 0.01 1.00

6.1.2.20 Overfrequency Autoreclosing (AR OF) The AR OF element provides reclosing initiated by the OF element. It also provides single shot to lockout functionality to avoid multiple reclosing in case of incorrect voltage pickup coordination, settings of VRC and OF elements. The element also proceeds to open to lockout without reclosing when the following signals are activated: Ÿ SD = "Source lost"; Ÿ Hot Line On; Ÿ Autoreclosing Off. AR OF settings are described in Tables 76, 77. 69 TECHNICAL MANUAL

Table 76. Radial line recloser AR OF element settings

Setting Designation Range Resolution Default

Number of trips to lockout Nt 1/2 n.a. 1

Reclose time, s Tr 0.10-180.00 0.01 10.00

Table 77. Ring line recloser AR OF element settings

Setting Designation Range Resolution Default

Number of trips to lockout + Nt + 1/2 n.a. 1

Reclose time +, s Tr + 0.10-180.00 0.01 10.00

Number of trips to lockout - Nt - 1/2 n.a. 1

Reclose time -, s Tr - 0.10-180.00 0.01 10.00

6.1.2.21 Automatic Backfeed Restoration (ABR) The ABR element is used to automatically close a normally open recloser if it detects a source (via SD element) on the alternative source side. This allows the recloser to be used as a tie point in an automation system. This element is only applicable for the ring type recloser and provides automatic backfeed restoration when relevant conditions are met. The element is blocked when the following signals are activated: Ÿ Protection Off; Ÿ Hot Line On; Ÿ Autoreclosing Off; Ÿ ABR Off. It can also be blocked by the SD and VRC protection elements. ABR element settings are described in Table 78. Table 78. ABR element settings

Setting Designation Range Default

Operating mode Mode Disable/Both/Only+/Only- Disable

Restoration disarm mode RD mode Enable/Disable Disable

Restoration disarm timeout Trd 00:00:01 – 06:00:00 (Hours:Minutes:Seconds) 00:00:10

Restoration time +, s Tr + 0.10-180.00 60.00

Restoration time -, s Tr - 0.10-180.00 60.00

6.1.2.22 Autoreclosing Timeout (ART) The ART element provides the autoreclosing timeout function used to lock out the recloser after a preset time. ART Timeout (Tt0) starts when the recloser trips to reclose. If the recloser will not close prior to timeout expiration, the recloser will automatically go to lockout. If the recloser will close prior to timeout expiration, ART timer will be reset and recloser will continue its autoreclosing cycle. ART settings are described in Table 79. 70 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Table 79. ART element settings

Setting Designation Range Default

Timeout Tt0 00:00:01 – 06:00:00 (Hours:Minutes:Seconds) 00:01:00

6.1.2.23 Cold Load Pickup (CLP) In some cases, when power supply is restored after prolonged outage, this results in greater than normal power demand. The main cause of this problem is the large number of electric heaters, furnaces, refrigerators, air conditioners and other thermostat-controlled loads. Higher current is often seen by protection as short circuit or overload, that result in circuit breakers automatically tripping to protect the system from overload, and the power goes off again. The CLP element enables temporary increasing current pickup setting to sustain cold load current and avoid tripping without compromising protection sensitivity. This functionality is applicable for the radial type recloser as only in this case the duration of power interruption for a group of customers can be observed. The CLP element caters for loss of load diversity due to an extended outage by increasing the Operational Cold Load Multiplier (OCLM) from 1 to a user set value Cold Load Multiplier (CLM) over a user set period of time (Cold Load recognition time). The CLP element picks up when the positive sequence current I1+ is less than 5A and the positive sequence voltage U1+ is less than 500V. Once supply is restored the OCLM returns to one over a second user set time (Reset time). OCLM is recalculated every cycle and is applicable for OC1, OC2, EF1 and EF2 elements. CLP settings are described in Table 80. Table 80. Radial line recloser CLP element settings

Setting Designation Range Default

Recognition time Trec 0-60min 30

Reset time Tres 1-400min 30

Cold load multiplier CLM 1.0-2.0 1.0

6.1.2.24 Close Condition Veriﬁer (CCV) The CCV element provides a synchro-check function, which compares the voltage of both supply sources. After veriﬁcation of the network synchronism, the synchro-check function releases the close command for the recloser. This functionality is applicable for the ring type recloser. CCV consists of two sub-elements: Synchronization Indicator (SI) and Close Logic Control (CLC). Synchronization Indicator (SI) This element consistently monitors the voltage and phase-angle difference to determine whether all the synchronous conditions are existent: 1) Ratio of the difference between the positive sequence voltage measured from Source + Side (U1+) and the positive sequence voltage measured from Source - Side (U1-) to the positive sequence voltage measured from Source + Side (U1+) does not exceed the Maximum voltage difference (dU); 2) Angle between the positive sequence voltage measured from Source + Side (U1+) and the positive sequence voltage measured from Source - Side (U1-) does not exceed the Maximum phase angle difference (dP); 3) Ratio of the difference between the neutral sequence voltage measured from Source + Side (Un+) and the neutral sequence voltage measured from Source - Side (Un-) to the positive sequence voltage measured from Source + Side (U1+) does not exceed 90%; 4) Ratio of the negative sequence voltage measured from Source + Side (U2+) to the positive sequence voltage measured from Source + Side (U1+) does not exceed 6% during one cycle; 5) Ratio of the negative sequence voltage measured from Source - Side (U2-) to the positive sequence voltage measured from Source - Side (U1-) does not exceed 6% during one cycle. SI settings are described in Table 81. 71 TECHNICAL MANUAL

Table 81. SI element settings

Setting Designation Range Default

Maximum voltage difference dU 0.01 - 0.30 p.u. 0.05 p.u.

Maximum phase angle difference dP 5 - 90 degrees 5 degrees

Close Logic Control (CLC) This element provides a close blocking function. CLC provides a blocking function when all of the following conditions are met: 1) CCV On; 2) Recloser Opened; 3) “Hot+ / Dead- allowed”1 = “Disable” or VRC = “Power fail” or SD ≠ “Source +”; 4) “Hot- / Dead+ allowed”1 = “Disable” or VRC = “Power fail” or SD ≠ “Source –“; 5) “Dead+ / Dead- allowed”1 = “Disable” or VRC = “Power fail” or SD ≠ “Source lost” or U1+/U1- > 500V; 6) “Hot+ / Hot- allowed”1 = “Disable” or VRC = “Power fail” or SD ≠ “Source lost” or synchronous conditions are violated. Note: 1 “Hot” stands for energized source and “Dead” stands for de-energized source CLC settings are described in Table 82. Table 82. CLC element settings

Setting Designation Range Default

Hot+ / Dead- allowed Hot+ / Dead- allowed Enable/Disable Disable

Hot- / Dead+ allowed Hot- / Dead+ allowed Enable/Disable Disable

Dead- / Dead+ allowed Dead- / Dead+ allowed Enable/Disable Disable

Hot+ / Hot- allowed Hot+ / Hot- allowed Enable/Disable Disable

The element is blocked when the following signals are activated: Ÿ Protection Off; Ÿ ABR On. 6.1.3 Fault locator (FL) The fault locator (FL) is an optional feature provided only upon special request. It presents an independent ﬁrmware function which provides impedance-based fault location. It is designed for radial and ring distribution systems. The algorithm is applicable for locating short circuits in all kinds of distribution networks (unearthed, solidly earthed, resistance and reactance earthed neutral systems). Earth fault location can be effectively used in solidly earthed, resistance and reactance earthed networks. The fault distance is calculated based on measured current and voltage phasors. The result from the fault distance calculation is the ohmic impedance value. Calculated impedance values are given in Table 83. Table 83. Calculated impedance values

Impedance value, Ohm Description

X1_fault Estimated positive sequence reactance from the recloser to the fault location

X0_fault Estimated zero sequence reactance from the recloser to the fault location

Fault location algorithm requires accurate setting values for downstream line impedances. Positive sequence impedances are required for locating short circuits and earth faults. FL settings are described in Tables 84, 85. 72 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Table 84. Radial line recloser FL settings

Setting Designation Range Default

Operating mode Mode Enable/Disable Disable

Downstream line X1 , Ohm/km X1 0.00 – 2.00 0.35

Downstream line X0, Ohm/km X0 0.00 – 4.00 1.50

Maximum fault distance, km Lm 0.00-1000.00 1.00

Table 85. Ring line recloser FL settings

Setting Designation Range Default

Operating mode Mode Enable/Disable Disable

Downstream line X1 for source side +, Ohm/km X1+ 0.00 – 2.00 0.35

Downstream line X0 for source side +, Ohm/km X0+ 0.00 – 4.00 1.50

Maximum fault distance for source side +, km Lm+ 0.00-1000.00 1.00

Downstream line X1 for source side -, Ohm/km X1- 0.00 – 2.00 0.35

Downstream line X0 for source side -, Ohm/km X0- 0.00 – 4.00 1.50

Maximum fault distance for source side -, km Lm- 0.00-1000.00 1.00

Calculated impedance values “X1_fault”, “X0_fault” and estimated fault distance are displayed in the Event log of the recloser for OC/EF/SEF protection elements in case of lockout (refer to Table 86). Additionally calculated impedance values “X1_fault” and “X0_fault” can be further processed in SCADA/DMS systems over standard communication protocols supported by the recloser. 73 TECHNICAL MANUAL

6.2 Measurement 6.2.1 Overview The Main Processor gets the analog signals from the OSM current and voltage sensors, converts them into digital format, and ﬁlters it for Harmonic content. The RMS values of the ﬁltered signals are used for protection and indication as shown in the table below. Table 86. Applicability of RMS values of the signals

Applicability Parameter Designation Range Resolution Protection Indication

Phase currents, A Ia, Ib, Ic 0...7000 1A X X

Residual current1) , A In 0...7000 1A X X

Positive sequence current, A I1 0...7000 1A X X

Negative sequence current, A I2 0...7000 1A X X

Positive sequence voltage measured from Source + side, kV U1+ 0...18 0.1kV X X

Positive sequence voltage measured from Source - side, kV U1- 0...18 0.1kV X X

Negative sequence voltage measured from Source + side, kV U2+ 0...18 0.1kV X X

Negative sequence voltage measured from Source - side, kV U2- 0...18 0.1kV X X

Neutral voltage shift measured from Source + side, kV Un+ 0...18 0.1kV X X

Neutral voltage shift measured from Source - side, kV Un- 0...18 0.1kV X X

Angle between Un and In, ° A0 0...+/- 180 1° X X

Angle between +U1 and -U1, ° PhAngDiffU1 0...180 1° X X

Frequency measured from Source + side, Hz F+ 40...65 0.01Hz X X

Frequency measured from Source - side, Hz F- 40...65 0.01Hz X X

Single-phase power factor PFa, PFb, PFc 0...0.01 0.01 X

Three-phase power factor PF3ph 0...0.01 0.01 X

Phase-to-earth voltages measured from Source + side, kV Ua+, Ub+, Uc+ 0…18 0.1kV X

Phase-to-earth voltages measured from Source - side, kV Ua-, Ub-, Uc- 0…18 0.1kV X

Phase-to-phase voltages measured from Source + side, kV Uab+, Ubc+, Uac+ 0…30 0.1kV X

Phase-to-phase voltages measured from Source - side, kV Uab-, Ubc-, Uac- 0…30 0.1kV X

Positive sequence active power, kW P1 0…65535 1kW X

Single-phase active power, kW Pa, Pb, Pc 0…65535 1kW X

Three-phase active power, kW P3ph 0…65535 1kW X

Single-phase reactive power, kVAr Qa, Qb, Qc 0…65535 1kVAr X

Three-phase reactive power, kVAr Q3ph 0…65535 1kVAr X 74 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Applicability Parameter Designation Range Resolution Protection Indication

Single-phase active energy, kWh Wa, Wb, Wc 0…9999999 1kWh X

Three-phase active energy, kWh W3ph 0…9999999 1kWh X

Single-phase reactive energy, kVArh Ea, Eb, Ec 0…9999999 1kVArh X

Three-phase reactive energy, kVArh E3ph 0…9999999 1kVArh X

Note: 1) Residual current In is equal to three times the zero sequence current Io Signal filtering effectively rejects higher harmonics. Phase current measuring channels are additionally equipped with inrush filters. 6.2.2 Inrush filter The Rec series reclosers incorporate a unique inrush filter. This allows filtering of magnetizing currents occurring at energizing transformers or distribution feeders with step-down-transformers. In contrast to the widely used inrush restraint, which blocks the operation of protection for the period of inrush, the filter leaves all protection active and sensitive to faults for the whole period of line energizing. The advantages are: • This feature makes it possible to select the settings of current-based protection elements based on actual load and fault levels, not considering any side effects due to transformer load energizing; • If, after maintenance closing or performing backfeed restoration for a faulty feeder part, the fault clearing time is significantly reduced as all protection elements operate correctly without any delays. Figures 48 and 49 demonstrate the comparison of current measurement results at load energizing captured by the recloser without and with inrush filter enabled.

Fig.48. Basic frequency phase currents RMS. No inrush ﬁlter applied

Fig.49. Basic frequency phase currents RMS. Tavrida Electric inrush ﬁlter applied 75 TECHNICAL MANUAL

6.3 Communication 6.4 TELARM Dispatcher Interface (TDI) 6.3.1 Overview The TDI enables multiple recloser connections to Tavrida Indication and control are provided through the following Electric TELARM Dispatcher® for remote control and interfaces: supervision. TELARM Dispatcher can be installed on one or multiple PCs with full or limited access to all or some of the • Personal Computer Interface (PCI); reclosers. Connection via Internet or Local Area Network (LAN) • Telecommunication Interface (TCI); is available. Physical connection of an RC5_3 to the Internet can be done via wireless connection - GPRS modem (see Figure 50) • Digital Input/Output Interface (IOI); or wired connection - Ethernet port (see Figure 51). • TELARM dispatcher Interface (TDI). Both the RC5_3 recloser control(s) and PC(s) with TELARM In the “Local“ mode, the recloser is controlled via the MMI or the software can connect to RC Internet Server software (RCIS). This Personal Computer Interface (PCI). In the “Remote“ mode the software provides communication between a PC and multiple recloser is controlled via TCI, TDI or IOI. Indication is provided via RC5_3. RCIS itself is a Windows® service. Connection between all interfaces in both modes. TELARM software and RCIS is protected with SSL encryption. Individual certificates are issued for each PC with TELARM 6.3.2 Personal Computer Interface (PCI) which will connect to RCIS. The PCI provides Indication and control via a PC (with installed Benefits of using a TDI are the following: TELARM software). The connection is established via the USB port located on the front the Control Panel Module (CPM), via • Remote control is available even without a SCADA system in RS-232 on the RCM or via a Bluetooth module (BTM). place (or as backup for existing SCADA system); The PCI provides the following functionality: • SCADA is usually available in dispatcher centers only. With TDI regional operators can check protection devices • Data upload/download; remotely without any support request form the Dispatcher • Firmware upload. Center; Uploading/Downloading data • Potential problems can be identified and eliminated faster because all logs from protection device, including Event log, Data can be uploaded/downloaded via the PC when the detailed Fault profile and fault oscillography are available communication link is established. The communication link is remotely and can be analyzed by an operator immediately password protected. The password is configured via the PCI at after protection device has operated. the time of the first communication session and stored in the MPM flash memory. If the control signal ”Erase passwords“ has been activated the password is erased. A new password can be uploaded from the PC during the next communication session. Uploading firmware A PC with installed TELARM is required for firmware uploading.

NOTE! Refer to the TELARM user guide for details on software application.

6.3.3 Telecommunication Interface (TCI) TCI is an embedded RTU interface that can be used for remote indication and control. The RTU is connected to the SCADA via a radio modem, phone modem, GSM/GPRS modem, 3G/4G gateway, RS485-RS232 converter or directly. Available communication protocols are DNP3, Modbus and IEC 60870-5-104

NOTE! Refer to the communication protocols user guides for details

6.3.4 Digital input/output interface (IOI) The IOI provides control and indication via the digital Input- Output Module (IOM). The IOM provides 12 digital inputs and 12 digital outputs for SCADA control and indication. Each input/output function is individually customizable. 76 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

RC Internet server Rcremote.dll

RC-05 GPRS Modem TELARM CommChannels TCP/IP TCP/IP Internet software Internet CommChannels Server driver CommChannels CommChannels GPRS Rcremote.dll Provider RC-05 GPRS Modem TELARM

Fig.50. Structure of the system with wireless connection

RC Internet server Rcremote.dll

RC-05 TELARM CommChannels TCP/IP TCP/IP LAN Internet software Internet CommChannels Server driver CommChannels CommChannels Rcremote.dll

RC-05

TELARM

Fig.51. Structure of the system with wired connection 77 TECHNICAL MANUAL

6.5 Indication 6.5.1 Man-Machine Interface (MMI) The MMI provides control and indication via the Control Panel Module (CPM) if the CPM is enabled (see Figure 52). If the CPM is disabled, no control and indication functions are supported by the MMI. 11 12 4 5 6 1. LCD 2. USB Port General Control Pushbuttons 3. ON / OFF / Test 4. Control Mode 5. Closed 6. Open LCD Control Pushbuttons 1 7. LCD Contrast 8. Navigation 9. Enter 10. Escape 3 10 Fast Key Pushbuttons 8 11. Malfunction Log 7 9 12. Event Log 13. Protection ON/OFF 14. Earth Fault ON/OFF 13 16 15. Sensitive Earth Fault ON/OFF 16. Reclosing ON/OFF 14 17 17. Hot Line ON/OFF 18. Backfeed Restoration ON/OFF 19. Active (Protection) Group 15 18

2 19

Fig.52. Control Panel Module (CPM)

LCD Display 1 2 3 4 5 1. TEL Logo 2. Title string 3. Label of Indication data, Control data or Settings 6 4. Path 5. Context icon 11 6. Title Bar 7 7. Menu Bar 8 8. Status Bar 9. Date and Time 10. Parameter values of Indication data, Control data or Settings 9 10 11. Scroll Bar

Fig.53. Liquid Crystal Display (LCD) The Title bar is shown in all menus and includes the following elements: • TEL logo icon; • Title string deﬁning menu type; • Path to the current menu; • Context icon. 78 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

6.6 Logging 6.6.1 Logs From the control panel the following logs can be read: • Change messages (CM); • Event log (EL); • Comms log (CL). • Malfunction log (ML). 6.6.1.1. Event log (EL) The following logs described in sections 6.5.1.3 to 6.5.1.6 are Pressing the “Event Log” button provides transition to this available only using a PC via the PCI or TDI interfaces: screen from any menu. The latest event is placed at the bottom of the list. Info about the number of the event in the list, time and • Fault proﬁle (FP); date of the event is displayed on the screen. • Load proﬁle (LP);

Event log button Context icon

Current/total number in EL

Date and time of the event

Fig.54. Event log via MMI

The Event log stores up to 1000 events associated with operation of protection and open/close events. Each event is time stamped with accuracy 1ms. For some events additional information is provided. Event log is arranged as a ring buffer. Table 87 presents the entire list of applicable events and relevant additional information. 79 TECHNICAL MANUAL

Table 87. Event log

Event Additional information provided

Bolted fault NA

Short circuit fault Source side (+/-) for Ring recloser

Sensitive earth fault Source side (+/-) for Ring recloser

Voltage unbalance Source side (+/-) for Ring recloser

Current unbalance Source side (+/-) for Ring recloser

Low system voltage Source side (+/-) for Ring recloser

High system voltage Source side (+/-) for Ring recloser

Low system frequency Source side (+/-) for Ring recloser

High system frequency Source side (+/-) for Ring recloser

Loss of supply NA

Maximum values of Ia, Ib, Ic, In, I2, U1+, U2+, minimum values of U1+, F+

Fault dropout since fault appearance; Fault distance, X1 _fault (in case FL Mode =

Enabled), X0 _fault (in case FL Mode = Enabled)

BF open to lockout Maximum value of I1 since fault appearance

OCHLa/OCHLb/OCHLc/EFHL open to lockout Maximum value of Ia, Ib, Ic, In since fault appearance

LS open to lockout/reclose NA

OC1a/OC1b/OC1c/OC2a/OC2b/OC2c/OC3a/OC3b/OC3c Maximum value of Ia, Ib, Ic since fault appearance open to reclose

OC1a/OC1b/OC1c/OC2a/OC2b/OC2c/OC3a/OC3b/OC3c Maximum value of Ia, Ib, Ic since fault appearance; Fault distance, X1 _fault open to lockout (in case FL Mode = Enabled)

EF1/EF2/EF3/ open to reclose Maximum value of In since fault appearance

SEF open to reclose Maximum value of In since fault appearance

Maximum value of In since fault appearance; Fault distance, X _fault (in SEF open to lockout 0 case FL Mode = Enabled)

EF1/EF2/EF3 open to lockout Maximum value of In since fault appearance; Fault distance, X0_fault (in case FL Mode = Enabled)

VU open to lockout Maximum value of U2+ since fault appearance

CU open to lockout Maximum value of I2 since fault appearance

UV open to lockout/reclose Minimum value of U1+ since fault appearance

OV open to lockout/reclose Maximum value of U1+ since fault appearance

UF open to lockout/reclose Minimum value of F+ since fault appearance

OF open to lockout/reclose Maximum value of F+ since fault appearance

First/second/third AR OC/AR SEF reclosure NA

AR UV/OV/UF/OF/LS reclosure NA 80 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Automatic backfeed restoration Source side (+/-)

First/second/third zone sequence coordination NA

Trip request from MMI/PCI/TCI/TDI/IOI NA

Open via MMI/PCI/TCI/TDI//IOI/Manually NA

Close request from MMI/PCI/TCI/TDI/IOI NA

Closed via MMI/PCI/TCI/TDI//IOI/Undeﬁned NA

Maximum and minimum value of U1+, U1-, minimum value of F+, F-, Power quality restoration maximum value of U2+, Un+, U2-, Un- since fault appearance.

Power quality fail NA

Reclosing timeout NA

Reclosing suspended by VRC NA

ABR Disarmed NA

The Event log stores oscillograms of faults that could be later downloaded and viewed on PC. The oscillogram 1 second in length is recorded for each fault. If the fault duration is more than 1 second then only ﬁrst second of the fault is recorded. If the fault duration is less than one second then the fault is recordered completely and the length of oscillogram equals the length of the fault. The sampling rate is adjustable and can be set to 8, 16, 32 or 64. Depending on the sampling rate deﬁned in system settings (see Table 88), the following amount of oscillograms (1 second in length) can be stored in RC memory. If the oscillograms are shorter the amount will vary accordingly. Table 89 gives a reference on the oscilogram storage capacity. Table 88. Oscillography settings

Setting Applicable range Factory default

Oscillography sample rate, Hz 8/16/32/64 32

Table 89. Oscilogramm storage capacity

Sampling Rate, Hz Storage capacity, oscilogramms (1s)

8 64

16 32

32 16

64 8

Oscilograms are exported to TELARM in COMTRADE-IEEE (Common Format for Transient Data Exchange). Each oscillogram contains 2 files: Ÿ DAT File: File with binary data (samples) from analog and digital channels. Its size depends on the number of cycles of the oscillography record (for description of data presented in oscillography log refer to RCE documentation, IDC/Generating standard indication signals); Ÿ CFG File: ASCII file with description of DAT File. Description contains serial number of the recloser, fault name and time of the fault appearance, configuration of the channels sampled, containing among other information, the conversion coefficient of analog/digital converter to voltage and current values, etc. 81 TECHNICAL MANUAL

Table 90 indicates a list of signals (analogue and binary) recordered by oscillography for each fault. Table 90. Oscillography record

Data point Size Data point Size

Ua, X1 voltage sensor 2 bytes Group 4 on 2 bytes

Ub, X2 voltage sensor 2 bytes Ud1. UDSignal 1 on 2 bytes

Uc, X3 voltage sensor 2 bytes Ud2. UDSignal 2 on 2 bytes

Ia, X1 current sensor 2 bytes Ud3. UDSignal 3 on 2 bytes

Ia, X2 current sensor 2 bytes Ud4. UDSignal 4 on 2 bytes

Ia, X3 current sensor 2 bytes Ud5. UDSignal 5 on 2 bytes

Ia, In current sensor 2 bytes Ud6. UDSignal 6 on 2 bytes

Closed 1 Bit Ud7. UDSignal 7 on 1 Bit

Dummy on 1 Bit Ud8. UDSignal 8 on 1 Bit

Remote on 1 Bit Ud9. UDSignal 9 on 1 Bit

Lockout 1 Bit Ud10. UDSignal 10 on 1 Bit

AR initiated 1 Bit Ud11. UDSignal 11 on 1 Bit

Protection active 1 Bit Ud12. UDSignal 12 on 1 Bit

RC door open 1 Bit IOI input 1 on 1 Bit

RCM fault 1 Bit IOI input 2 on 1 Bit

Malfunction 1 Bit IOI input 3 on 1 Bit

Warning 1 Bit IOI input 4 on 1 Bit

Prot on 1 Bit IOI input 5 on 1 Bit

AR on 1 Bit IOI input 6 on 1 Bit

EF on 1 Bit IOI input 7 on 1 Bit

SEF on 1 Bit IOI input 8 on 1 Bit

LL on 1 Bit IOI input 9 on 1 Bit

ABR on 1 Bit IOI input 10 on 1 Bit

Group 1 on 1 Bit IOI input 11 on 1 Bit

Group 2 on 1 Bit IOI input 12 on 1 Bit

Group 3 on 1 Bit 82 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

6.6.1.2. Malfunction log (ML) Pressing the “Malfunctioning log” pushbutton provides transition to this screen from any menu. Some events have characters that classify events: “M” – malfunction or “W” - warning. A character is shown in the beginning of the event description string. LED lights if malfunction or warning is detected

Malfunction log button

M – means malfunction Scroll bar W – means warning Current/total number in the ML

Date and time of the event

Fig.55. Malfunction log via MMI The Malfunction log stores up to 1000 events associated with malfunction or warning signals issued by different elements. Each event is time stamped with accuracy 1ms. Malfunction log is arranged as a ring buffer. Table 91 presents the entire list of applicable events and conditions of their appearance. 83 TECHNICAL MANUAL

Table 91. Malfunction log

Reference element Event Condition of event appearance for related signals

Watchdog restart System watchdog initiated restart of the microcontroller NA

RCM fault¹ Activation of «RCM fault» signal IDC RCM recovery Deactivation of «RCM fault» signal

Shutdown Activation of «Shutdown» signal PSE Power restart Deactivation of «Shutdown» signal

Low battery found Activation of «Battery low» signal PSE Battery restoration Deactivation of «Battery low» signal

Loss of AC supply Activation of «Loss of AC supply» signal PSE Restoration of AC supply Deactivation of «Loss of AC supply» signal

RTU short circuit Activation of «RTU short circuit» signal PSE RTU reconnection Deactivation of «RTU short circuit» signal

TDI modem disconnected Activation of «TDI modem disconnected » signal PSE TDI reconnection Deactivation of « TDI modem disconnected » signal

Battery fault Activation of «Battery fault» signal PSE Battery recovery Deactivation of «Battery fault» signal

Battery sensor fault Activation of «Battery sensor fault» signal PSE Battery sensor recovery Deactivation of «Battery sensor fault» signal

Excessive trip time Activation of «Excessive trip time» signal DRVE Excessive close time Activation of «Excessive close time» signal

Driver fault Activation of «Driver fault» signal DRVE Driver recovery Deactivation of «Driver fault» signal

OSM coil isolated Activation of «OSM coil isolated» signal OSM coil short circuit Activation of «OSM coil short circuit» signal DRVE OSM coil recovery Deactivation of «OSM coil isolated» and «OSM coil short circuit» signals

Driver not ready Activation of «Driver not ready» signal DRVE Driver ready Deactivation of «Driver not ready» signal

IOM fault Activation of «IOM fault» signal IOI IOM recovery Deactivation of «IOM fault» signal

IOM disconnected Activation of «IOM disconnected» signal IOI IOM reconnection Deactivation of «IOM disconnected» signal

BTM disconnected Activation of «BTM disconnected» signal PCI BTM reconnection Deactivation of «BTM disconnected» signal

BTM fault Activation of «BTM fault» signal PCI BTM recovery Deactivation of «BTM fault» signal

BTM initialization error Activation of «BTM initialization error» signal PCI BTM initialized Deactivation of «BTM initialization error» signal

RTU disconnected Activation of «RTU disconnected» signal TCI RTU reconnection Deactivation of «RTU disconnected» signal

RTU fault Activation of «RTU fault» signal TCI RTU recovery Deactivation of «RTU fault» signal 84 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

RTU initialization error Activation of «RTU initialization error» signal TCI RTU initialized Deactivation of «RTU initialization error» signal TDI provider disconnected GPRS connection with GPRS provider and local network connection to server PC is not established or has been interrupted. TDI provider connected GPRS connection with GPRS provider or local network connection to server PC is TDI successfully established TDI disconnected Connection with RC Internet server is not established or has been interrupted TDI TDI connected Connection with RC Internet server is successfully established TDI modem fault GPRS modem fault is detected TDI TDI modem recovery GPRS modem fault is eliminated TDI modem initialization error "TDI modem initialization error" setting value became equal "1" TDI TDI modem initialized “TDI modem initialization error" setting value became equal "0" TDI network adapter “TDI network adapter disconnected” signal value became equal "1" disconnected TDI network adapter “TDI network adapter connected” signal value became equal "0" TDI connected TDI server not responded RC Internet Server does not respond TDI

RTC reset Activation of «RTC reset» signal RTC RTC adjusted Deactivation of «RTC reset» signal

Note: 1 This event is generated when a malfunction of any of MPM, PSM or DRVM modules appears. At recovery of operability of these modules “RCM recovery” message is generated 6.6.1.3. Load profile (LP) The Load profile stores up to 9000 readings of continuously monitored data. Each reading is time stamped with an accuracy of 1ms. The time interval between readings is equal to user configurable «Load profile step». Load profile is arranged as a ring buffer. Table 92 presents the entire list of applicable data. Table 92. Load profile settings

Setting Applicable range Factory default

Load proﬁle step, min 5/10/15/30/60 30

All analogue data in the load profile represent relevant measurement data averaged within the period between two sequential records (equal to load profile step). «Power source side» represents a list of the states of the source detector (refer to description of protection element for details) and OSM open state existing between two sequential load profile records. In general case it has the following format: + / - / ? / O. Conditions of appearance of each symbol are described in Table 93. Table 93. Load profile data

Data point Applicable Range

Phase currents, A 0 to 7000

Phase-to-phase voltages, kV 0.0 to 30.0

Active power in each phase and three phase active power, kW 0 to 65 535

Reactive power in each phase and three phase reactive power, kVAr -65 535 to 65 535

Three-phase power factor 0.00 to 1.00

Power source side NA 85 TECHNICAL MANUAL

For example, «Power source side» record +/O would mean that Ÿ Frequency; within time interval between current and previous records Ÿ Active Protection; Source detector existed in «Source +» state with OSM being closed, and for some time OSM has been open. Ÿ Angle between Un and In; 6.5.1.4. Fault profile (FP) Ÿ Position of the OSM. The Fault profile stores up to 10000 readings of data related to 6.5.1.5. Change messages (CM) protection activity. Each reading is time stamped with an This log records 100 records associated with the control accuracy of 1ms. The time interval between readings equals one instructions issued locally or via telecommunications. Each cycle of the power frequency. The fault profile is arranged as a event is time stamped with an accuracy of 1ms. Change ring buffer. messages are arranged as a ring buffer. The fault profile is filled with relevant data when protection Each message is accompanied with additional information that element activated. always includes control source instruction and (for some The following data are presented in the Fault profile: messages) old and new values of the parameter being subject for change. Ÿ Phase currents; Table 94 represents a list of applicable message types (XXX Ÿ Residual current; means the name of setting or element); several settings of one Ÿ Positive sequence current and voltage; element can be changed, that will result in the appearance of several Change messages, one for each changed setting. Ÿ Negative sequence current and voltage; Table 94. Change messages log

Applicable source of Reference (where to ﬁnd description of relevant data Change Message Control Instructions point)

System settings uploaded PCI, TDI Comms: settings uploaded via PCI

Protection settings uploaded PCI, TDI Comms: settings uploaded via PCI

Comms settings uploaded PCI, TDI Comms: settings uploaded via PCI

Control mode changed MMI/PCI IDC: standard indication signals

MMI: setting XXX changed MMI MMI

TCI: element XXX : setting XXX changed MMI TCI: relevant element

RTC: setting XXX changed MMI RTC

PSE: setting XXX changed MMI PSE

ME: setting XXX changed MMI ME

IOI: setting XXX changed MMI IOI

IDC: setting XXX changed MMI IDC: generating load proﬁle

Prot: element XXX: Group X: setting XXX changed MMI Prot: relevant element

Protection status changed MMI/PCI/TCI/TDI/IOI IDC: protection statuses

Dummy mode changed PCI/TCI/TDI/IOI IDC: protection statuses

Total CO MMI/PCI/TCI/TDI IDC: lifetime counters

Contact wear MMI/PCI/TCI/TDI IDC: lifetime counters

Protection counters erased MMI/PCI/TCI/TDI IDC: protection counters 86 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

TCI counters erased MMI/PCI/TCI/TDI Comms: TCI indication data

TDI counters erased MMI/PCI/TCI/TDI Comms: TDI indication data

Energy meters erased MMI/PCI/TCI/TDI ME

Logs erased MMI/PCI/TCI/TDI IDC

Password erased MMI IDC

Prot password changed MMI/PCI/TDI CII: Password

Comms password changed MMI/PCI/TDI CII: Password

System password changed MMI/PCI/TDI CII: Password

PCI password changed PCI CII: Password

RTU supply switched on/off MMI/PCI/TDI PSE: RTU supply on

Date/Time adjusted MMI/PCI/TCI/TDI/RTC RTC: RTC indication data

Table 95 presents particular examples of change messages presented above. Table 95. Change messages log (example)

Change Message From To Source of control instruction

System settings uploaded NA NA PCI

Protection settings uploaded NA NA TCI

Comms settings uploaded NA NA TCI

Control mode changed Local Remote PCI

MMI: AR pushbutton mode changed Enable Disable MMI

TCI: Modbus : Slave address changed 2 3 MMI

RTC: Date and time format changed, h 12 24 MMI

PSE: DCE shutdown level changed 0.3 0.2 MMI

ME: X1 current sensor coefﬁcient changed , V/kA 2.0000 1.9800 MMI

IOI: Setting of an input for Trip signal changed 1 5 MMI

IDC: load proﬁle step changed , min 5 15 MMI

Prot: OC1+: Group 1: pickup current changed, A 100 120 MMI

Protection status changed AR on AR off PCI

Total CO 0 300 PCI

Contact wear 0 2 MMI 87 TECHNICAL MANUAL

Protection counters erased NA NA MMI

TCI counters erased NA NA MMI

6.6.1.6. Comms log (CL) The Comms log stores 1000 events associated with data transfer via communications element. Each event is time stamped with an accuracy of 1ms. For some events additional information is provided. The Event log is arranged as a ring buffer. Table 96 presents the entire list of applicable events and relevant information. Table 96. Comms log

Event Conditions of appearance Additional information provided

MMI session started Activation of «MMI active» signal NA

MMI session completed Deactivation of «MMI active» signal NA

PCI session started Activation of «PCI active» signal Via USB/BTM/RS-232

Number of transferred/received bytes and frames PCI session completed Deactivation of «PCI active» signal during connection session

TCI session started Activation of «TCI active» signal NA

Number of transferred/received bytes and frames TCI session completed Deactivation of «TCI active» signal during connection session

TDI session started Activation of «TDI active» signal Via GPRS/LAN

Number of transferred/received bytes and frames TDI session completed Deactivation of «TDI active» signal during connection session

IOI session started Activation of «IOI active» signal NA

IOI session completed Deactivation of «IOI active» signal NA

MMI user authenticated Successful authentication of MMI user User rights (Protection, Communication, System)

MMI authentication failed Authentication of MMI user failed NA

PCI user authenticated Successful authentication of PCI user NA

PCI authentication failed Authentication of PCI user failed NA

TCI user authenticated Successful authentication of TCI user User name

TCI authentication failed Authentication of TCI user failed User name/Phone number/IP address

TDI user authenticated Successful authentication of TDI user NA

TDI user authentication failed Authentication of TDI user failed NA

PCI protocol restart PCI protocol is restarted NA

TCI protocol restart TCI protocol is restarted DNP3/Modbus/IEC104

TDI protocol restart TDI protocol is restarted NA 88 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

TCI UR initiated TCI UR transfer is initiated NA

TCI UR conﬁrmed TCI UR is conﬁrmed by Master NA

Attempt to send TCI UR was TCI UR failed unsuccessful (Cancellation failed or NA Protocol error or TCP/IP error)

PCI restart PCI protocol restarted NA

TCI restart TCI protocol restarted NA

MMI refusal of command There are no conditions for execution of Reason, Command name execution MMI command

IOI refusal of command There are no conditions for execution of Reason, Command name execution IOI command

PCI refusal of command There are no conditions for execution of Reason, Command name execution PCI command

TCI refusal of command There are no conditions for execution of Reason, Command name execution TCI command

TDI refusal of command There are no conditions for execution of Reason, Command name execution TDI command

6.6.2 Counters 6.6.2.1. Protection counters Protection counters calculate total number of faults or reclosures related to operation of particular protection elements as described in Table 97 below. Protection counters can be erased with the aid of “Erase protection counters” instruction from MMI, PCI, TDI or TCI. Table 97. Protection counters

Counter Incrementing Conditions

BF trips Tripping initiated by BF element

OC trips Tripping initiated by one of the following elements: OC1a, OC1b, OC1c…

EF trips Tripping initiated by one of the following elements: EF1, EF2, EF3 and EFLL

SEF trips Tripping initiated by SEF element

VU trips Tripping initiated by VU element

CU trips Tripping initiated by CU element

UV trips Tripping initiated by UV element

OV trips Tripping initiated by OV element

UF trips Tripping initiated by UF element

LS trips Tripping initiated by LS element

OF trips Tripping initiated by OF element 89 TECHNICAL MANUAL

AR OC reclosures Reclosing initiated by AR OC element

AR SEF reclosures Reclosing initiated by AR SEF element

AR UV reclosures Reclosing initiated by AR UV element

AR UF reclosures Reclosing initiated by AR UF element

AR OV reclosures Reclosing initiated by AR OV element

AR OF trips Tripping initiated by AR OF element

ABR reclosures Reclosing initiated by ABR element

6.6.2.2. Lifetime counters Lifetime counters calculate total number of close-open operations, mechanical and contact wears of OSM as described in Table 98 below. Lifetime counters can be erased with the aid of “Erase lifetime counters” instruction from MMI, PCI, TDI or TCI. Table 98. Lifetime counters

Data Point Incrementing Conditions

Total CO Open operation increments counter by 1

Contact wear , % Open operation increments counter by the amount ΔW=( I/630)1.8 / 300 where: I - maximum (out of three phases) rms value of phase current ﬁxed two cycles before deactivation of "Closed" signal

Mechanical wear, % Open operation increments counter by 1/300

6.6.2.3. Log filling counters Log filling counters reflect the percentage of log filling (with regard to total number of recorded events). Log filling counters can be erased with the aid of “Erase log filling counters” instruction from MMI, PCI, TDI or TCI. The following counters are presented: Ÿ Load profile filling; Ÿ Event log filling; Ÿ Fault profile filling; Ÿ Malfunction log filling; Ÿ Change messages filling; Ÿ Comms log filling. 90 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

7. MOUNTING KIT

7.1 Recloser mounting kits 7.1.1 Selection guide Tavrida Electric provides standard recloser mounting kits for the following installations: • Installation onto single pole; • Installation onto A-poles and metal lattice towers; • Installation onto H-poles. Table 99. Selection guide

Mounting kit1 Description

RecMount_OSM15_1 OSM15/OSM25 mounting kit for installation onto single cylindrical, trapezoidal and conical poles.

RecMount_OSM15_2 OSM15/OSM25 mounting kit for installation onto A-poles and metal lattice towers.

RecMount_OSM15_3 OSM15/OSM25 mounting kit for installation onto H-poles.

RecMount_VT15_1 VT15/VT25 mounting kit for vertical installation of VT onto cylindrical, trapezoidal or conical poles.

RecMount_VT15_2 VT15/VT25 mounting kit for horizontal installation of VT onto cylindrical, trapezoidal or conical poles.

RecMount_OSM15_Ext Extension kit for installation of RecMount_OSM15_1 onto plain walls.

Note: 1 Contact your local representative if you cannot ﬁnd a suitable option from the list 7.1.2 Technical parameters Table 100. Applicability of material used

Parts Material and thickness Coating

Load bearing parts (supports, holders, channels) Mild steel 3-4 mm Hot-dip galvanized 40 µm

Tightening accessories: steel band Stainless steel 0.75 mm

Tightening accessories: buckle Stainless steel 2 mm

Fittings1 Stainless steel Hot-dip galvanized 40 µm

Note: 1 Fittings durability class – 8.8 Table 101. Selection guide

Mounting kit Weight1 , kg Mounting kit Weight1 , kg

RecMount_OSM15_1 25 RecMount_VT15_1 6

RecMount_OSM15_2 64 RecMount_VT15_2 10

RecMount_OSM15_3 55 RecMount_OSM15_Ext 18

Note: 1 Weight does not include the weight of equipment 91 TECHNICAL MANUAL

Table 102. Climatic conditions

Standard Conditions

IEC 721-2-1 СT1; WDa1

GOST 15150 UHL1; ТВ1

7.1.3 Packaging All mounting kit components except steel channels larger than 1 meter are delivered packed into carton boxes. The packages bear Pictorial symbols "THIS SIDE UP", "PROTECT FROM MOISTURE" and identiﬁcation labels (see Figure 56). Package dimensions are given in Table 99.

RecMount_OSM15_1 □ RecMount_OSM15_2 □ RecMount_OSM15_3 □ RecMount_VT_1 □ RecMount_VT_2 □ Year of manufacture 2016

Fig.56. OSM mounting kit carton box Table 103. Package dimensions

Mounting kit Package dimensions

RecMount_OSM15_1 L800xW370xH410

RecMount_OSM15_2 L650 х W360 х H100 mm

RecMount_OSM15_3 L650 х W360 х H100 mm

RecMount_VT_1 L650 х W360 х H100 mm

RecMount_VT_2 L510 х W500 х H220 mm

RecMount_OSM15_Ext L2000 х W130 х H110 mm1

Note: 1 The RecMount_OSM15_Ext is packed in plastic wrapping 92 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

If the RecMount_VT_1 is ordered together with the RecMount_OSM15_1, the mounting kit for the VT is placed inside the RecMount_OSM15_1 carton box (see Figure 57). The RecMount_VT_2 is supplied separately in its individual box.

RecMount_VT15_1

Fig.57. VT mounting kit carton box 7.1.4 Mounting kit for installation onto single pole The mounting kit RecMount_OSM15_1 (see Figure 58) is applicable for OSM15/25 with surge arresters and allows installation onto cylindrical, trapezoidal or conical single poles. The mounting kit RecMount_VT15_1 is also applicable for OSM15/25 installation onto a substation plain wall using the additional kit RecMount_OSM15_Ext consisting of two extensions as shown in Figure 59 (fasteners not included).

Fig.58. RecMount_OSM15_1 (single pole) Fig.59. RecMount_OSM15_Ext (plain wall) The mounting kit RecMount_VT15_1 (see Figure 60) is applicable for a voltage transformer installation on the same type of pole in vertical position in respect to the ground. The mounting kit RecMount_VT15_2 (see Figure 61) is applicable for a voltage transformer installation on the same type of pole in horizontal position in respect to the ground.

Fig.60. RecMount_VT15_1 (vertical installation) Fig.61. RecMount_VT15_2 (horizontal installation) 93 TECHNICAL MANUAL

These above mentioned kits are designed to be installed using stainless steel band included in the scope of supply. ENSTO_CT42 optional tool is recommended for tightening the band. Alternatively, the kits can be installed using threaded rods or U-shaped metal clamps (not included). 7.1.5 Mounting kit for installation onto A-pole and metal lattice tower The mounting kit RecMount_OSM15_2 (see Figure 62 and 63) is applicable for OSM15/25 with surge arresters and voltage transformer and allows installation onto A-poles or metal lattice towers. The kit is designed to be installed without additional ﬁxing gear such as stainless steel bands or threaded rods.

Fig.62. RecMount_OSM15_2 (metal lattice structure) Fig.63. RecMount_OSM15_2 (A-pole) 94 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

7.1.6 Mounting kit for installation onto H-pole The mounting kit RecMount_OSM15_3 (see Figure 64) is applicable for OSM15/25 with surge arresters and voltage transformer and allows installation onto H-pole. The kit is designed to be installed without additional ﬁxing gear such as stainless steel bands or threaded rods.

Fig.64. RecMount_OSM15_3 (H-pole) 7.1.7 Mounting kit for installation of Recloser Control cubicle Recloser control cubicle supplied with two welded mounting brackets having provisions for steel band installation and openings (Ø 22 mm) for bolted connection. Alternatively, the RC5_3 can be installed using threaded rods (not included). Standard ﬁxing gear (steel band) for installation onto single pole is supplied together with the RC5_3 (see Figure 65). For installation onto a metal lattice structure U-shape metal clamps can be used (see Figure 66). Two clamps are included with the RecMount_OSM15_2 mounting kit.

Fig.65. RC5_3 installation (steel band) Fig.66. RC5_3 installation (U-clamps) 7.1.8 Installation Installation of the recloser is described in section “9. Installation guide”. 95 TECHNICAL MANUAL

8. ADDITIONAL EQUIPMENT

8.1 Voltage transformer (VT) 8.1.1 Overview Voltage transformers can be supplied by Tavrida Electric on request. Two-pole transformers are designed for use on overhead distribution lines for rated voltages of up to 24kV to provide power supply for the recloser control cubicle. The voltage transformer is completely impregnated and sealed with epoxy resin providing high dielectric strength and mechanical durability.

Fig.67. Voltage transformer Refer to Appendix 3 to see the VT dimensional drawings. 8.1.2 Technical parameters Table 104. VT technical parameters

Parameter RecComp_VT15_1 RecComp_VT25_1

Type Outdoor, pole-mounted

Insulation Epoxy resin

Rated maximum voltage, kV 12 24

Nominal primary voltage, kV1 6; 6.6; 10; 10.5; 11 15; 20; 22

Nominal secondary voltage, kV1 0.11; 0.23

Rated power frequency, Hz 50/60

Rated power-frequency test voltage 1.2/50µs, kV 28 50

Rated lightning impulse withstand voltage, kV 75 125

Rated voltage factor 1.2 * Un

Rated power, VA 200VA

Accuracy class 3

Minimum operation temperature, °C -55

Maximum operation temperature, °C +75

Weight, kg 28 34

Dimensions, mm 342 x 370 x 327 373 x 432 x 327

Applicable standard IEC 60044-2

Note: 1 Primary and secondary nominal voltage must be speciﬁed in the order 96 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

8.2 Surge arresters (SA) 8.2.1 Overview Metal oxide surge arresters can be supplied by Tavrida Electric on request. Surge arrestors are designed for use on overhead distribution lines for rated voltages of up to 30kV to protect the primary equipment from overvoltages. The surge arrestor is encapsulated in silicone rubber housing providing high dielectric strength and mechanical durability. Arrester protection is highly recommended on both sides of the recloser. If protection is on one side only, it should be the source side.

Fig.68. Surge arrester Refer to Appendix 3 to see the SA dimensional drawing. 8.2.2 Technical parameters Table 105. SA technical parameters

Parameter RecComp_SA15_SAV RecComp_SA25_SAV

Type Outdoor

Insulation Silicone rubber

Line discharge class 11

Nominal discharge current, kA 10

High current impulse withstand, kA 100

Long duration current impulse withstand, A 300

Speciﬁed long-term load (SLL), N*m 200

Short-circuit withstand, kA/s 20/0.2

Rated power frequency, Hz 50/60

Rated maximum voltage (continuous operating 2 12(10.2) 15(12.7) 18(15.3) 24(20) 27(22.5) 30(25) voltage), kV

Rated lightning impulse withstand voltage, kV 95 110 125 170

Minimum operation temperature, °C -50

Maximum operation temperature, °C +55

Weight, kg 1.7 2.1 2.5 3.1

Connection of primary circuit (interface) M12x35

Applicable standard IEC 60099-4

Note: 1 Class 2 available upon special request 2 Rated voltage must be speciﬁed in the order 97 TECHNICAL MANUAL

8.3 Interface Test Set (ITS) 8.3.1 Overview Interface test set EA_ITS_1 (ITS) is a simulator of combined The ITS is enclosed in a portable, impact resistant plastic case current and voltage sensors of the OSM and intended for providing IP40 protection (see Figure 69, Figure 70 and Figure secondary and primary current and voltage injection. Together 71). with three-phase injection test set (not included with the The ITS has four current channels and six voltage channels for delivery) the ITS is capable to simulate the following types of simulation output signals of the combined current and voltage faults: sensors. Each current channel has a current sensor (Rogowski • Three phase short circuit; coil) and each voltage channel has a step-down voltage transformer. Internal components are protected by thermal • Phase to phase short circuit; circuit breakers and overvoltage suppressors. • Earth fault; For more information on the ITS technical and application • Upstream broken wire; details refer to the relevant ITS technical manual. Refer to Appendix 3 to see the ITS dimensional drawing. • Low source voltage; • Loss of supply; • Loop automation functionality (with two secondary injection test sets).

Fig.69. ITS general view

Input voltage channels

Voltage channel toggle switches OSM connector

Voltage range selector switch Earthing terminal Input current channels

RC connector Current injection selector switch (primary or secondary injection)

Circuit breakers

Fig.70. ITS front panel 98 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Voltage transformers

Rogowski coils

Overvoltage suppressors

Fig.71. ITS inside view

The optional OSM simulator EA_ITS_OSM-sim_01 (Figure 72) is used in conjunction with the ITS to check recloser protection without using the OSM. The plug is connected to the ITS to simulate position of the OSM main contacts.

Fig.72. OSM simulator 99 TECHNICAL MANUAL

8.3.2 Technical parameters Table 106. ITS technical parameters

Parameter Rated value

Frequency, Hz 50/60

Power frequency withstand test voltage (50 or 60 Hz, 1 min) 500

Current channels Number channels of the current simulation Input current (secondary injected 4 current), not more than, A

Input impedance, Ohm 5.8

Short-time thermal current, not more than, A, 1s 2(2.4)

Secondary current transformation ratio, kS , V/A at 50 (60) Hz 6

Voltage channels Number channels of the voltage simulation 6-30; 30 -150

Input voltage rangers, V AC Input impedance, kOhm 24

Voltage transfer ratio, kU, V/V

for voltage range 6 -30V 0.135

for voltage range 30-150V 0.027

Class of climatic conditions in accordance with IEC 721-3 -4 4K5

Minimum operation temperature, °C +5

Maximum operation temperature, °C +40

Maximum relative humidity, % 98

Altitude, not more than, m 1000

Class of mechanical conditions in accordance with IEC 721-3 -4 4M4

Degree of protection IP40

Weight, kg 9.2

Overall dimensions with closed case cover, mm 406x330x174 100 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

9. INSTALLATION GUIDE

9.1. Unpacking The recloser parts are delivered in corrugated boxes. The contents of the crate and box are speciﬁed in section 3.5. Unpacking is described below: 1. Remove polyethylene package and plastic shipping bands from the corrugated box using a cutter; 2. Open the shipping corrugated box by removing the top cover; 3. Remove all relevant shipping and technical documentation and set it aside; 4. Check that you have all the components and ensure that there is no visible damage (refer to section "9.2. Acceptance and Initial Inspection").

9.2. Acceptance and initial inspection Tavrida Electric products are assembled, tested and inspected at the factory before being packaged. Inspect the shipping packaging for any external signs of damage on receipt of the product. If any signs of external damage are found, unpack the product and inspect it thoroughly for signs of transport damage. If transport damage is suspected, ﬁle a claim with the carrier. The inspection process is described in the table below: Table 106. Initial inspection

№ Object Inspection description

1 Plastic details Absence of mechanical damages, scratches, spots

2 Silicon insulation Absence of mechanical damages

Absence of mechanical damages, scratches and corrosion on painted surfaces and 3 Metal parts galvanized terminals.

4 Seals Presence of undamaged seals

5 Nameplate Presence of nameplates in accordance with the technical speciﬁcation

9.3. Handling requirements To avoid equipment damage, follow the handling recommendations listed below: • The Rec15/25 components must be lifted using special lifting provisions located at the RC cubicle and the OSM; • The HV assembly and the RC should be appropriately ﬁxed/lifted to avoid equipment damage; • In case the Rec15/25 components are delivered on a pallet, it can be moved using a properly rated forklift vehicle.

9.3.1. OSM handling To lift the OSM use the lifting provisions of the mounting frame (see Figure 73). The OSM can be also lifted using four M12x25 eye bolts screwed into upper holes of the OSM tank (see Figure 74). M12x25 eye bolts are not included with the delivery. CAUTION! When lifting the OSM to the support structures the lifting facilities should not come into contact with bushings,surge arresters or auxiliary VT bushings. Failure to comply may result in damage to the equipment. 101 TECHNICAL MANUAL

Lifting provisions

Fig.73. OSM handling (lifting provisions)

Lifting eye bolts

Fig.74. OSM handling (eye bolts) 9.3.2. RC handling The RC5_3 has two lifting provisions. The RC can stand in the vertical position without any additional equipment.

Lifting provisions

Fig.75. RC handling 102 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

9.4. Installation procedure WARNING! This guide must be used in conjunction with the utility's own safety procedures. Before installation begins, all necessary precautions should be carried out. All mounting and lifting operations must be performed with caution and by trained personnel. Failure to comply may result in death, severe personal injury or equipment damage. A competent technician has the following qualiﬁcations: · Is thoroughly familiar with these instructions; · Is trained in industry-accepted medium- and low voltage safe operating practices and procedures; · Is trained in the care and use of protective equipment such as ﬂash clothing, safety glasses, face shield, hard hat, rubber gloves, hot stick, etc. 9.4.1. Required equipment 9.4.2. OSM installation • Set of wrenches (8-24mm); Before starting the OSM installation, make sure that: • Set of screw drivers (+ and - ); • The OSM main contacts are open; • Steel band tightening and cutting tool; • The Control cable is disconnected; • Screw driver “-” 2.5x0.4 for WAGO terminals; • The OSM umbilical socket cover is closed; • Diagonal pliers; • The OSM tripping hook is attached. • Power line connection provision: Wires (preferably insulated); Manual tripping hook installation Support insulators (if required); Prior to attaching the manual tripping hook, the M8 nut from the OSM installation kit should be screwed onto the threaded end of Cable lugs applicable for chosen connection wires and the hook. The hook with the nut should be placed at the mounting M12 bolt; seat. Connection clamps (waterproof if insulated connection wires are used).

2 Check the correct orientation of the hook (Figure 76). Then, • Hydraulic cable terminal lug clamping tool up to 240mm ; holding the hook in this position tighten the M8 nut to a torque of • Alcohol for insulation cleaning; 10Nm as shown below. • Crane or other lift for OSM and RC5_3 lifting.

Hook correct orientation

Fig.76. Manual hook installaon 103 TECHNICAL MANUAL

NOTE! Installation of the OSM depends on a mounting kit included with delivery and described separately in the relevant Assembly Instruction (RecDoc_Ai_RecMount-OSM15-VT) provided with each recloser.

9.4.3. RC installation Before starting the RC installation, make sure that: • The RC door is closed; • The Control cable (umbilical) is disconnected; • The RC umbilical socket cover is closed. Table 107 shows the ﬁxing gear supplied together with the RC5_3. Table 107. Recloser Cubicle mounting kit

Item Quantity Figure

Steel stainless strip 4m

Steel Buckle 2

U-shaped metal clamp M16 (U-clamp)1 2

Note: 1 Used for installation onto metal lattice structures. Supplied with the RecMount_OSM15_2 mounting kit only Installation with steel band (see Figure 77): • Attach the steel band to the back bracket of the control cubicle; • Mount the RC on the pole using the stainless steel band and steel buckle; • The steel buckle must be ﬁxed with a tightening tool.

Steel buckles Steel stainless strip

Fig.77. RC5_3 installation (steel band) 104 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Installation with U-clamps (see Figure 78): • Attach the RC to the metal structure; • Fix the RC to the metal structure using two M16 U-clamps and two sets of fasteners included with the delivery (4xM16 hex nuts, 4xA17 washers and 4xA16 spring washers).

U-shaped metal clamps

Fig.78. RC5_3 installation (U-clamps) 9.4.4. VT installation The VT should be installed on a separate mounting bracket providing a reliable and robust ﬁxation of the transformer on the pole. Installation of the VT depends on a mounting kit included with delivery and described separately in the relevant Assembly Instruction (RecDoc_Ai_RecMount-OSM15-VT) provided with each recloser.

9.4.5. SA installation Two brackets for surge arresters installation are included in the mounting kit. Installation of the SA depends on the mounting kit included with delivery and described separately in the relevant Assembly Instruction (RecDoc_Ai_RecMount-OSM15-VT) provided with each recloser.

9.4.6. Telecommunications equipment installation RC5_3 has a specially designed chassis with holes. It is placed above the RCM and can be removed for convenient equipment installation. The chassis allows the installation of modem, converter or other communication equipment. It can be ﬁxed with the aid of plastic ties by using existing holes. It is also possible to install DIN rail for equipment with corresponding installation type. 105 TECHNICAL MANUAL

To remove chassis from RCM follow the steps below:

1. Unscrew two captive screws which fasten 2. Pull the chassis out the chassis to RCM To install equipment follow the steps below:

1. Unscrew ﬁve screws from each corner and 2. Remove the plate the center of the plate Install the equipment and assemble the chassis and ﬁx it on RCM in reverse order.

9.5. Earthing CAUTION! The OSM, RC5_3 and mounting frame should be connected to the same earthing bar by means of an M12 hex head bolt included with delivery. Recommended ﬁxing torque is 30Nm. The cross-section of copper conductors depends upon network and shall satisfy to applicable regulations.

The OSM is earthed by means of an M12 hex head bolt threaded into a captive thread on the back wall of the tank (see Figure 79).

Earthing terminal

Fig.79. OSM earthing 106 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

The RC is earthed by means of an M12 hex head bolt threaded into a captive thread on the base of the cubicle (see Figure 80).

Fig.80. RC5_3 earthing Earthing of the OSM and VT mounting frames must be done with the help of an earth links from the main earthing bar to the nearest available M12 bolt connection of the mounting kit.

WARNING! Make sure, that the system impedance corresponds to the following condition: U=Ik х R where: U - safe to touch voltage (<60V); Ik - earth fault current; R - resistance of the earthing path. System impedance to ground can be measured on site using special equipment or previously measured value for particular grounding bar can be provided by the utility. Failure to comply may result in death, severe personal injury or equipment damage.

9.6. Connection of primary circuits U-bolt connectors U-bolt connectors (Figure 81) provide reliable connection of cable conductors with 35 to 240 mm2 cross section. Each OSM package includes a set of 12 connectors by default. U-bolts and fasteners are made of stainless steel. Clamping plate is made Si-Bn coated brass.

U-bolt

Clamp

Nut Plain washer

2 Spring lock Fig.82. Connection of conductor up to 90 mm washer

Fig.81. U-bolt connector

Fig.83. Connection of conductor up to 240 mm2 107 TECHNICAL MANUAL

One connector is enough to connect conductors up to 90 mm2 (see Figure 82). Two connectors shall be used to connect 120 mm2 and greater cross section conductors (see Figure 83). Tightening torque of connector nuts is 15±1 Nm.

Fig.84. Bird protectors

Fig.85. Connection with lugs Protective covers can be used to protect connections against the environment (see Figure 84). If cable diameter is more than 10 mm, the cone end of each cover shall be cut to the corresponding diameter to fit the cable tightly. Lug connection Lugs can be used to connect cables from 16 to 240 mm2 . Lugs shall have 10.5 mm holes. Lugs are fixed with M10x25 bolts. Tightening torque of 30±2 Nm shall be applied. Protective covers are not installed in this case (see Figure 85). 9.7. Connecting the RC5_3 to auxiliary supply CAUTION! The Earthing in the PSFM module should be arranged depending on the type of external source. In case where the external source has a predefined neutral wire (e.g. substation LV network or a VT with secondary winding earthed inside the terminal box), PSFM jumpers 11(2) and 18(9) should be removed. However, in case where the external source does not have a predefined neutral wire (e.g. VT with ungrounded secondary winding), corresponding jumpers should be installed to provide power source. Failure to comply may result in damage to the equipment.

RC5_3 auxiliary supply is connected to terminals of Power Supply Filter Module (PSFM) placed inside the cubicle. PSFM terminals are shown in Figure 86. It can be ﬁtted with two separate AC supplies. It allows connection of auxiliary voltage in the range 85…265 V AC.

Earthing Connector

AC1 Connector AC2 Connector AC1 Earthing Jumper AC2 Earthing Jumper Pins 1-9

Pins 10-18

L N L N E L N AC1 Outlet AC2 Fig.86. PSFM terminals 108 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

9.8. Connecting the Umbilical control cable To connect the Umbilical control cable follow the steps below:

Captive screw

Mechanical latch

1. Open the RC5_3 internal door and unscrew one latch captive 2. Connect the 32 pin female connector to the RC5_3 and secure screw to remove the protective cover it with the mechanical latch

3. Connect the 42 pin male connector to the OSM and secure it with the mechanical latch 9.9. Dismounting procedure Protection device dismounting should be performed in reverse to the installation procedure order. All safety procedures and precautions should be applied accordingly. The integrity of the line should be restored in case the protection device is removed completely. 109 TECHNICAL MANUAL

10. COMMISSIONING GUIDE

10.1. General information In MMI Test Mode pushbuttons functionality can be checked by pressing it. Name of the pressed pushbutton is displayed on All Tavrida Electric outdoor switching modules meet IEEE CPM display as follows: C37.60 and IEC 60271-111 requirements and are tested before shipment. MMI Test Mode This section provides recommendations for commissioning tests described in sections 10.1.1 to 10.1.5 after installation of PROT pushbutton was pressed the recloser. Press On/Off to exit Test Mode If the main contact resistance test, primary and/or secondary injection tests or power frequency voltage test are required prior Exit the MMI Test Mode by pressing "Hold to Test" (“On/Off”) installation refer to sections 10.1.6 to 10.1.10. pushbutton. 10.1.1. Power supply testing LCD pixels test can be done by pressing and holding "Hold to Switch on the battery switch and AC miniature circuit breakers Test" (“On/Off”) for 5 seconds. In this mode all LCD pixels are taking into account single or double side power supply. activated. Switch on control panel by pressing the CPM “On/Off” Complete the test by pressing “On/Off” pushbutton or switching pushbutton. off CPM. 10.1.3. Checking measurement coefficients NOTE! Up to 60 s might be required for the RC5_3 Check that the current and voltage measurement coefficients in circuits energizing. the RC5_3 settings correspond to the OSM routine test certificate. Check that Umbilical control cable length is correct.

Make sure that local time and date are correct. If date, time or Measurement coefficients and Umbilical control cable both are incorrect connect to the RC via USB, Bluetooth or TDI indication: and synchronize date and time on your computer with the RTC of CPM - > Main menu -> Settings -> System -> Measurement the RC using TELARM. Date and time is visible at the MMI screen. To correct coefficients and Umbilical cable length, connect to the RC via TELARM: Synchronize date and time procedure: TELARM -> On-line -> Rec -> System settings -> System -> ME TELARM->On-line->Synchronize date and time settings Date and time setup via MMI: NOTE! Incorrect measurement coefficients and CPM Main Menu -> Control Data -> Set Date and time incorrect Umbilical cable length may result in performance outside of specified accuracy for voltage Select “PSE Power supply” title in the screen and press “Enter”. and current measurement. “PSE indication” menu shall appear. Check presence of both AC input voltages indication and the residual battery capacity 10.1.4. Recloser operation tests indication. If an abnormal state is indicated connect the proper Test procedure: AC supply or replace the battery accordingly. 1. Connect the Umbilical control cable to the OSM. Make sure that residual battery lifetime is set to 100%. 2. Switch on the control panel by pressing the CPM “On/Off” Residual battery lifetime setup via TELARM: pushbutton and ensure that the position LED corresponds to TELARM->On-line->Set counters->Residual battery lifetime the mechanical position indicator of the OSM. Residual battery lifetime setup via MMI: 3. Perform several Close-Open operations using MMI CPM Main Menu -> Control Data -> Lifetime counters-> pushbuttons. Ensure that reaction on command does not Residual battery lifetime… exceed 2 seconds and OSM position is correctly reflected by 10.1.2. CPM testing “Closed” and “Open” LEDs. 4. Use the manual trip hook to initiate a mechanical trip CPM testing includes pushbutton functionality testing in MMI operation and ensure the mechanism is fully withdrawn. Test mode and LCD pixel testing. 5. View the “Indication data” on the CPM, select the MMI test mode is activated by pressing and holding on 2-5 “Identification data conditioner” and then select seconds of "Hold to Test" (“On/Off”) pushbutton of CPM. In this “Malfunction log” and confirm that an “OSM Coil Isolated” case MMI Test Mode is applied in which all LEDs blink and MMI message indicates that the OSM is unable to be closed. Test Mode menu appears on CPM display: Confirm that pressing the close button does not cause the OSM to close. Press the ESC key to return back to the “Main MMI Test Mode menu” view. 6. Push the manual trip hook back into the operating position and confirm that pressing the close pushbutton causes the Press any pushbutton for test OSM to close. Press On/Off to exit Test Mode 110 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

7. After powering the main line ensure that the OSM is in the 10.1.7. Primary current injection test CLOSED position. Select “Measurement” from the The test should be done with the primary current injection test “Indication data” page. Check that phase current, earth set. currents, phase-to-earth and phase-to-phase voltages are within the accuracy limit specified in the technical data. Test procedure: 10.1.5. Checking phase sequences 1. Connect the primary current injection test set to the OSM. After powering the main line it is recommended to check the 2. Inject rated primary current, one phase at a time. correct phase sequence. The negative sequence voltage (U2) should be less than 1kV. 3. Select “Indication data”, “ME measurements” from the CPM. Check that phase and earth current are correct in each case Negative voltage sequence indication: and within the accuracy limit specified in the technical data. CPM -> Main menu -> Indication data -> Measurement -> U2 WARNING! The OSM main contacts must be in the If the negative sequence voltage is observed, it can be fixed by CLOSED position. Injected primary current must be below changing the software setting. the minimum tripping setting or the overcurrent protection must be disabled prior the test. All electrical Changing phase sequence: equipment must be earthed. Failure to comply may result TELARM -> On-line -> Rec -> System settings -> System -> in death,severe personal injury or equipment damage. Configuration -> Wires to terminal connection 10.1.8. Primary voltage injection test The test should be done with the primary voltage injection test NOTE! Incorrect phase sequence may result in incorrect set. operation of relay protection elements. Test procedure:

10.1.6. Main contact resistance test 1. Connect the primary voltage injection test set to the OSM. The test should be done with the micro-ohm meter. 2. Energize the OSM connectors with phase-to-earth rated voltage. Test procedure: 3. Select “Indication data”, “ME measurements” from the CPM. Apply test current to the OSM terminals. The current during the Check that phase-to-earth and phase-to-phase voltages are measurement shall have any convenient value between 50A and correct and within the accuracy limit specified in the the rated normal current. technical data. Main contact resistance must not exceed the limits specified in WARNING! The OSM main contacts must be in the the technical specification: CLOSED position. Injected primary voltage must be below · ≤ 85µ for 15 kV Rec series automatic circuit recloser; the minimum tripping setting or the voltage protection must be disabled prior the test. All electrical equipment · ≤ 95µ for 27 kV Rec series automatic circuit recloser. must be earthed. Failure to comply may result in death, severe personal injury or equipment damage. Current 10.1.9. Secondary injection test with ITS source The test should be done with the secondary current and voltage injection test set (e.g. Omicron CMC 356 or similar) together with R Auxiliary bar the ITS. The purpose of this test is to check the microprocessor relay and verify protection settings using sequences of secondary current and voltage injection. Principal circuit diagram is shown in Figure 88. Test procedure: 1. Connect the test equipment to the OSM and RC. 2. Connect your PC to the RC via USB, Bluetooth or TDI. 3. Upload protection settings to the RC and enable protection that needs to be tested. 4. Inject secondary current and voltage which are below the Fig.87. Main contact resistance test minimum tripping settings. 5. Select “Indication data”, “ME measurements” from the CPM. Check that phase currents, earth current, phase-to-earth WARNING! The OSM main contacts must be in the and phase-to-phase voltages are correct and within the CLOSED position. The RC must be switched off during the accuracy limit specified in the technical data. test. All electrical equipment must be earthed. Failure to comply may result in death,severe personal injury or 6. Set the current or voltage above the minimum tripping equipment damage. setting and wait until the corresponding protection trips. 111 TECHNICAL MANUAL

7. Check relevant data (tripping time, value of tripping current WARNING! All electrical equipment must be earthed. or voltage) and compare it with the protection settings. Failure to comply may result in death, severe personal injury or equipment damage.

Test ITS RC5_3 equipment VA Ua VB Ub VC Uc VR Ur VS Us RecUnit_Umbilical_0 VT Ut

I1 Ia I2 Ib I3 Ic I4 In

RecUnit_Umbilical_0

OSM

Fig.88. Secondary injection test set principal circuit diagram 10.1.10. Power frequency voltage test Where power frequency testing is required prior to installation, testing to 80% IEEE C37.60 or IEC 60271-111 Power Frequency withstand voltage is recommended to conﬁrm insulation integrity without unduly stressing insulating components (see Table 108). Table 108. Power frequency voltage

Equipment Rating Recommended Test Voltage

15.5 kV 40 kV

27 kV 48 kV

High voltage should be applied to the OSM connectors. The OSM should be connected to the control cubicle with the Umbilical control cable.

WARNING! Inappropriate energization or excessive voltage may result in equipment damage. Inappropriate earthing of the OSM, RC or test equipment will apply hazardous voltages that may result in death, personal injury, or equipment damage. Only personnel trained in HV testing should carry out the tests described in this section.

The test conditions are presented in the below table: 112 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Table 109. Power frequency voltage test sequence

Test condition Switching device state Material and thickness Earth connected to

1 Closed X1-X4 X2;X3;X5;X6;F1

2 Closed X2-X5 X1;X3;X4;X6;F

3 Closed X3-X6 X1;X2;X4;X5;F

4 Open X1 X2;X3;X4;X5;X6;F

5 Open X2 X1;X3;X4;X5;X6;F

6 Open X3 X1;X2;X4;X5;X6;F

7 Open X4 X1;X2;X3;X5;X6;F

8 Open X5 X1;X2;X3;X4;X6;F

9 Open X6 X1;X2;X3;X4;X5;F

Note: 1 F stands for OSM frame (enclosure) The test procedure is divided into two parts. TEST 1. OSM main contacts must be in the CLOSED position (test conditions 1-3 in the table). 1. Rise the AC voltage slowly; 2. Increase the voltage up to the limit speciﬁed in the table above and maintain for 1 min. TEST 2. OSM main contacts must be in the OPEN position (test conditions 4-9 in the table). 1. Rise the AC voltage slowly; 2. Increase the voltage up to the limit speciﬁed in the table above and maintain for 1 min; 3. During this test, self-fading restrikes may appear. In this case reduce the voltage until that effect disappears (for 10…15s) and then increase the voltage back to the required level; 4. If the test set uses long connecting wires, the restrikes may cause switching surges resulting in insulation failure during the test. To avoid this effect, use the shortest possible wires. If the length of the connecting wires cannot be reduced below 3 m, correct the surge impedance of the test set by connecting an R circuit as illustrated below;

Fig.89. Impedance connection diagram 5. Disconnect the Umbilical control cable from the OSM and RC. Test object compliance criterion: The OSM shall be considered to have passed the test if no disruptive discharge occurs. 113 TECHNICAL MANUAL

11. MAINTENANCE GUIDE

11.1. General information The OSM and RC is maintenance free. No regular maintenance operations are required during the entire period of operation. This section provides recommendations for transportation, storage and disposal of the equipment and gives general information about the warranty terms. 11.2 Transportation Rec series recloser should be transported in its standard packaging using any type of transport. During transportation, the packages should be protected against water. In the case where air transport is used, the package should be placed in a heated and pressurized compartment. The goods should be handled in accordance with handling instructions. The package should be handled with care and protected against dropping and physical damage. 11.3 Storage All products should be stored in their original package in a closed dry place. Storage ambient temperature should be in the -40°C to +55°C range. Average humidity measured over 1 year period should not exceed 75% at 50°C. 11.4 Disposal The 12 V DC GENESYS 26EPX control battery has a life expectancy of ten years. It is recommended that the battery is replaced after ten years or if the battery life calculated by the controller is expired - whichever occurs ﬁrst.

NOTE! Battery life decreases at higher temperatures. Dispose of expired batteries in an environmentally responsible manner. Consult local regulations for proper battery disposal.

Other products and their component do not contain any hazardous or dangerous materials which can cause harm to the environment or to humans. No special disposal methods are required. 11.5 Warranty The Warranty period against manufacturing defects of the Rec series automatic circuit recloser is 3 years from date of manufacture. The Company will refund all financial losses related to replacement/repair and transportation of the necessary parts to the customer location. In a case where warranty terms and conditions of the manuals contradict the delivery contract; conditions specified in the delivery contract have priority. Under no circumstances is Tavrida Electric responsible for indirect losses associated with the failure of the product. Generally, the customer has the right to impose claims for material and/or manufacturing defects on Tavrida Electric: • if the Tavrida Electric product has been bought from us or from an authorized Tavrida Electric Export distributor; • if the product has been properly employed by the user with the care of a diligent businessman in accordance with normal usage as stipulated in the product specifications; • if damaging factors in the environment and/or surroundings - such as excessive heat, cold or moisture (going beyond the limits given in the manufacturer's specifications) - can be ruled out, or if the user proves that such factors have had no influence on the product's ability to function properly; • if the product was stored under conditions described in section 11.3 of this manual; • if no force has been exerted due to accident, lightning or excess voltage (going beyond the range tested for the respective product); • if the malfunctioning of our product due to installation errors, operating errors - in particular derogation from the rules laid down in the operating instructions - or other culpable third-party conduct can be ruled out; • if the Tavrida seal is still affixed to the product undamaged. 114 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

12. TROUBLESHOOTING GUIDE

12.1. General information This section provides recommendations for troubleshooting steps. Replacing procedure for components is described in section "12.3. Component replacement procedures". The recloser main wiring diagrams are given in "Appendix 4. Wiring diagrams". NOTE! In case the actions listed below do not help, contact your local representative. WARNING! Replacement of all modules and wiring assemblies must be carried out at disconnected external power supply cables and control cable. All replacement operations of the HV assembly equipment require power line de-energizing. All necessary precautions (visible line gaps, temporary groundings, etc.) should be applied. Failure to comply may result in death, severe personal injury or equipment damage. 12.2. Troubleshooting The recloser control module continuously monitors the health of the circuit breaker and internal modules, providing signal indication through the Malfunction log. Table 110 gives description of recommended actions associated with the appearance of malfunction signals. Table 110. Troubleshooting steps associated with malfunction signals

№ Signal Possible reason Malfunction tracing procedure Recommended action

Internal fault of recloser control 1 RCM fault N/A Replace the RCM module

2 Driver fault Internal fault of driver module N/A Replace the RCM

Internal fault of input output 3 IOM fault N/A Replace the IOM module

IOM mode is enabled but the Verify that the IOM is properly Provide reliable connection of the IOM IOM is not physically installed or installed in the RCM slot Disable the IOM mode if it is not used IOM not properly connected to RCM 4 disconnected If the signal does not disappear the RCM malfunction Replace the RCM problem is in the RCM

Internal fault of Bluetooth N/A Replace the BTM module 5 BTM fault Check if the reading in the RCM malfunction malfunction log “RCM fault” is Replace the RCM present

1) Provide reliable connection of the BTM mode is enabled but the 1) Disconnect the USB cable from Bluetooth module USB cable connecting the the RCM and the Bluetooth module 2) Replace the USB cable Bluetooth module and the RCM 2) Check the cable for any visual NOTE! Disable the BTM mode if the BTM is unplugged or damaged damage 6 Bluetooth is not used disconnected Check if the reading in the RCM malfunction malfunction log “RCM fault” is Replace the RCM present

Internal fault of Bluetooth N/A Replace the BTM module BTM 7 initialization error Check if the reading in the RCM malfunction malfunction log “RCM fault” is Replace the RCM present 115 TECHNICAL MANUAL

№ Signal Possible reason Malfunction tracing procedure Recommended action

1) Disconnect the RTU from the power supply 2) Turn the RTU supply on via the Internal RTU short circuit Replace the RTU CPM If signal disappears short circuit is inside the RTU

RTU short Disconnect the plug “10” 8 circuit Short circuit in the wires If the signal disappears the short Replace the wiring assembly connecting RTU and RCM circuit is in the wiring between the RTU and RCM

Check if the reading in the RCM malfunction malfunction log “RCM fault” is Replace the RCM present

1) Provide reliable connection of the RTU mode is enabled but the 1) Disconnect the cable from the RTU and the RCM, cable connecting the RTU and RTU and the RCM 2) Replace the cable the RCM is unplugged or 2) Check the cable for any visual NOTE! Disable the RTU mode if it is damaged damage RTU not used 9 disconnected Check if the reading in the RCM malfunction malfunction log “RCM fault” is Replace the RCM present

1) Ensure that all settings in the DCE and the RC are consistent. Perform all 1) Check the DCE and RC (TCI) dialing procedures manually, using a RTU Incorrect DCE conﬁguration. settings PC with a standard terminal software 10 initialization DCE did not answer “OK” on 2) Disconnect the DCE-DTE cable recommended by the DCE error init string. 3) Check the DCE-DTE cable for any manufacturer visual damage 2) Provide reliable connection of the DCE-DTE cable 3) Replace the DCE-DTE cable

AC miniature circuit breaker is Check that the AC miniature circuit Switch on the AC miniature circuit switched off breaker is switched on breaker

Check the phase voltages on CPM Distribution line is If the phase voltages on CPM are Contact the responsible maintenance disconnected or damaged from not normal then distribution line is department the source side disconnected or damaged from the source side

Check the voltage at the PSFM Loss of AC 11 power supply input terminals (refer supply to section “9.7. Connecting the RC Check the auxiliary transformer and Auxiliary transformer to auxiliary supply”) its wiring, ﬁx the malfunctioning malfunction If the voltage is less than 85 V it is a component malfunction of the auxiliary transformer

If the voltage is between 85-265 V, check the voltage at the RCM input PSFM malfunction (plug “14”). If the voltage is less Replace the PSFM than 85 V, the malfunction is in the PSFM 116 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

№ Signal Possible reason Malfunction tracing procedure Recommended action

In case the voltage at the RCM Loss of AC 11 RCM malfunction inputs is between 85-265 V it is an Replace the RCM supply RCM malfunction

AC auxiliary power supply was Refer to “Loss of AC supply” section of absent for a long time and the this troubleshooting guide to establish Check if the reading in the Low battery signal was generated when the AC auxiliary power supply 12 malfunction log “Loss of AC supply” found battery residual capacity NOTE! The signal will disappear when dropped below a preset is present the battery capacity is above the shutdown level shutdown level

1) Ensure that battery switch is ON 2) Ensure that the battery is The battery was disconnected properly connected to the RCM: 1) Turn the battery switch to ON manually or by switching off the Plug “13” wires 1(+) and 2(-) 2) Provide reliable connection of the battery switch 3) Check the wiring connection to wiring the battery terminals: “+” terminal = wire with “+” mark “-” terminal = battery sensor

1) Disconnect the wiring from the 13 Battery fault RCM: Plug “13” wires 1(+) and 2(-) 2) Disconnect the wiring from the Wiring malfunction battery: Replace the wiring assembly Wires marked “+” and “-” 3) Check that wiring for any visual damage NOTE! Reconnect the wiring properly after the tests are done

If none of the above described Internal fault of the battery reasons were conﬁrmed it is likely Replace the battery to be an internal battery fault

Check the battery sensor wiring Battery sensor wiring is not Provide reliable connection of the connection to the RCM: properly connected to the RCM battery sensor Battery Plug “13”, wires 3,4,5,6,7,8 14 sensor fault If none of the above described Failure of battery reasons were conﬁrmed it is likely Replace the wiring assembly temperature sensor a battery temperature sensor fault

Check if the record in malfunction Refer to “Driver not ready” section of Excessive trip Driver is not ready 15 log “Driver is not ready” is present this troubleshooting guide time Check if the reading in the Refer to “OSM coil short circuit” OSM coil short circuit malfunction log “OSM coil short section of this troubleshooting guide circuit” is present

Check if the reading in malfunction Refer to “OSM coil open circuit” OSM coil open circuit log “OSM coil open circuit” is section of this troubleshooting guide present 117 TECHNICAL MANUAL

№ Signal Possible reason Malfunction tracing procedure Recommended action

1) Switch off the RC and battery 2) Disconnect plug “8“ from the RCM 3) Disconnect wire 7 and 8 from plug “8” 4) Short circuit inputs 7 and 8 of RCM malfunction plug “8” Replace the RCM 5) Connect plug “8” to the RCM 6) Switch on RC and battery The indication of the main contact position should change to “Open” If the indication doesn't change to “Open” the malfunction is in the RCM

If RCM replacement doesn't help: 1) Switch off the RC and the battery 2) Disconnect “8” plug from the RCM Excessive trip 15 3) Disconnect the control cable time from the RC. 4) Disconnect the control cable from the OSM 5) Short circuit pins 22 and 29 of the heavy duty connector of the Open circuit in Control Cable control Replace the Control cable cable (OSM side) 6) Connect the control cable to the RC 7) Connect plug “8” to the RCM 8) Switch on the RC and battery The indication of the main contacts position should change to “Open” If the indication doesn't change to “Open” the malfunction is in the control cable

If none of the above described OSM malfunction actions helped it is an OSM Replace the OSM malfunction

Check if the record in malfunction Refer to “Driver not ready” section of Driver is not ready log “Driver is not ready” is present this troubleshooting guide

1) Switch off the RC and battery Excessive 2) Disconnect plug “8“ from the 16 close RCM time The indication of main contact RCM malfunction position should change to “Close” Replace the RCM If the indication doesn't change to “Close” the malfunction is in the RCM 118 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

№ Signal Possible reason Malfunction tracing procedure Recommended action

1) Switch off the RC and the battery 2) Disconnect the control cable from the RC. 3) Switch on the RC and battery Short circuit in the wiring The indication of main contact connecting the RCM with position should change to “Close” Replace the RC control cable If the indication doesn't change to “Close” the malfunction is in the wiring connecting the RCM with control cable

1) Switch off the RC and the battery 2) Connect the control cable to the Excessive RC 16 close 3) Disconnect the control cable time from the OSM Open circuit in Control 4) Switch on the RC and the battery Replace the Control cable Cable The indication of the main contact position should change to “Close” If the indication doesn't change to “Close” the malfunction is in the control cable

If none of the above described OSM malfunction actions helped it is an OSM Replace the OSM malfunction

Push the manual trip hook back into The OSM is switched off Check if the OSM is switched off the operating position and conﬁrm manually manually that pressing the close pushbutton causes the OSM to close

Check that the wiring connecting Wiring connecting drivers of the the drivers of the RCM (plug “8”) RCM and control cable is not and control cable is properly Connect the wiring properly properly connected connected

1) Switch off the RC and the OSM coil 17 battery and wait for 2 minutes isolated 2) Short circuit inputs 1 and 2 of plug “8” of the RCM 3) Switch on the RC and the battery The malfunction readings should RCM malfunction change to “OSM coil short circuit” Replace the RCM In case the reading doesn't change the malfunction is in the RCM NOTE! Remove a short circuit jumper after the test. Connect the wiring to the RCM properly 119 TECHNICAL MANUAL

№ Signal Possible reason Malfunction tracing procedure Recommended action

1) Switch off the RC and the battery and wait for 2 minutes 2) Short circuit pins 1 and 3 of the Control cable connector 3) Switch on the RC and the battery The malfunction readings should Wiring assembly in the RC is change to “OSM coil short Replace the wiring assembly open circuited circuited” If the reading doesn't change the malfunction is in wiring assembly between the RCM and control cable NOTE! Remove a short circuit jumper wiring after the test

1) Check that the control cable is connected properly Control cable is not connected 2) Check that pins of the Control 1) Connect the Control cable properly properly cable and HARTING connectors are 2) Replace the Control cable OSM coil visually not damaged from the RC 17 isolated and OSM side 1) Switch off the RC and the battery and wait for 2 minutes 2) Short circuit pins 37 and 39 of the HARTING connector of the control cable (OSM side) 3) Switch on the RC and the battery The malfunction readings should Control cable malfunction Replace the Control cable change to “OSM coil short circuited” If the reading doesn't change the malfunction is in the control cable NOTE! Remove a short circuit jumper wiring after the test

If none of the above described OSM malfunction actions helped it is an OSM Replace the OSM malfunction

1) Switch off the battery and wait for 2 minutes OSM coil 2) Open circuit driver inputs of the 18 short RCM Plug “8” inputs 1 and 2 circuit 3) Switch on the RC and battery The malfunction readings should RCM malfunction Replace the RCM change to “OSM coil open circuited” If the reading doesn't change the malfunction is in the RC NOTE! Connect the wiring to the RCM properly 120 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

№ Signal Possible reason Malfunction tracing procedure Recommended action

1) Switch off the RC and the battery and wait for 2 minutes 2) Disconnect the Control cable from the RC 3) Switch on the battery switch and/or auxiliary supply switch The malfunction readings should Wiring assembly connecting the change to “OSM coil open RCM and Control cable is short circuited” Replace the wiring assembly circuited If the reading doesn't change the malfunction is in the wiring assembly between the RCM and control cable NOTE! Connect the Control cable properly to the RC

1) Check that the Control cable is connected properly Control cable is not connected 2) Check that pins of the Control 1) Connect the Control cable properly OSM coil properly cable and HARTING connectors are 2) Replace the Control cable 18 short visually not damaged from the RC circuit and OSM side

1) Switch off the RC and the battery and wait for 2 minutes 2) Disconnect the Control cable from the OSM 3) Switch on the battery switch Control cable malfunction and/or auxiliary supply switch Replace the Control cable The malfunction readings should change to “OSM coil open circuited” If the reading doesn't change the malfunction is in the Control cable

If none of the above described OSM malfunction actions helped it is an OSM Replace the OSM malfunction

Wait for 60 seconds Switching capacitors are still If the signal disappears this Not required charging warning is not associated with any malfunction

Check if the record in malfunction Refer to “OSM coil short circuit” or Driver not OSM coil short circuit or OSM 19 log “OSM coil short circuit” or “OSM coil isolated“ section of this ready coil isolated “OSM coil isolated” are present troubleshooting guide

Check if the reading in the RCM malfunction malfunction log “RCM fault” is Replace the RCM present

1) Disconnect the cable from the Cable connecting the RCM and 1) Provide reliable connection of the TDI modem RCM and the DCE 20 the DCE is not properly RCM and the DCE fault 2) Check the DCE-DTE cable for connected or damaged 2) Replace the DCE-DTE cable any visual damage 121 TECHNICAL MANUAL

№ Signal Possible reason Malfunction tracing procedure Recommended action

If the above described action did TDI modem 20 not help it is an internal Replace the DCE fault Iinternal fault of the DCE malfunction of the DCE

1) Ensure that all settings in the DCE and the RC are consistent. Perform all 1) Check the DCE and RC (TDI) dialing procedures manually, using a TDI modem Incorrect DCE conﬁguration. settings PC with a standard terminal software 21 initialization DCE did not answer “OK” on 2) Disconnect the DCE-DTE cable recommended by the DCE error init string. 3) Check the DCE-DTE cable for any manufacturer visual damage 2) Provide reliable connection of the DCE-DTE cable 3) Replace the DCE-DTE cable

1) Provide reliable connection of the TDI mode is enabled but the 1) Disconnect the cable from the RTU and the RCM, cable connecting the DCE and DCE and the RCM TDI modem 2) Replace the DCE-DTE cable 22 the RCM is unplugged or 2) Check the DCE-DTE cable for disconnected NOTE! Disable the TDI mode if it is not damaged any visual damage used

The RC does not receive echo- replies from RC Internet Server Wait for 10 minutes before the RC If connection has not been restored, (normally followed by reading in tries to establish connection with make sure that the RC Internet Server malfunction log “TDI provider the RC Internet Server service is running on PC TDI server not 23 disconnected”) responded Check if the reading in malfunction Refer to “TDI provider disconnected” TDI provider disconnected log “TDI provider disconnected” is section of this troubleshooting guide present

DCE is unable to access the Internet due to poor GPRS 1) Check the GPRS network 1) Ensure that GPRS coverage is network coverage or incorrect coverage present Internet Service Provider 2) Check the Internet Service 2) Enter the correct settings settings (for example APN Provider settings name)

Ensure that GPRS service is provided GPRS service is blocked the Contact the Internet Service TDI provider by using a mobile phone ﬁtted with 24 Internet Service Provider Provider for clariﬁcation of status disconnected this SIM card

Check if the reading in malfunction Refer to “TDI modem initialization TDI modem initialization log “TDI modem initialization error” error” section of this troubleshooting is present guide

Check if the reading in malfunction Refer to “TDI modem fault” section of TDI modem fault log “TDI modem fault” is present this troubleshooting guide

1) Check the TDI settings (Internet IP address and port) 1) Enter correct TDI settings Connection with the RC Internet 2) Check that the RC Internet 2) Restart the RC Internet Server server cannot be established or Server is running and connected to TDI 3) Ping the external RC Internet 25 has been temporarily the Internet disconnected Server IP adress to check if it's interrupted 3) Check that the RC Internet Server has a static IP address reachable from the Public Internet which accessible from the Public Internet 122 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

№ Signal Possible reason Malfunction tracing procedure Recommended action

TDI modem initialization Check if the reading in malfunction Refer to “TDI modem initialization“ log “TDI modem initialization error” section of this troubleshooting guide is present

Check if the reading in malfunction Refer to “TDI modem fault“ section of TDI TDI modem fault 25 log “TDI modem fault” is present this troubleshooting guide disconnected Check if the reading in malfunction Refer to “TDI provider disconnected “ TDI provider disconnected log “TDI provider disconnected” is section of this troubleshooting guide present

The TDI network adapter was Verify that the TDI network adapter Provide reliable connection of the TDI TDI network disconnected manually is properly installed in the RCM network adapter 26 adapter disconnected Internal fault of the TDI network Verify that the TDI network adapter Replace the TDI network adapter adapter is working properly with PC

Loss of AC and battery power Synchronize the date and time via 27 RTC resetted N/A supply MMI, TCI, TDI or PCI 123 TECHNICAL MANUAL

Table 108 gives a description of recommended actions for troubleshooting known issues which are not followed by malfunction signals. Table 108. Troubleshooting steps

№ Problem Possible reason Malfunction tracing procedure Recommended action

Check that AC miniature circuit breakers are ON In case the voltage is absent refer to RCM is shutdown Check the voltage on power supply inputs of the RCM section “Loss of AC supply” in Table The voltage shall be in the range 104 85-265 V PC connection 1 problems Improper connection Check cable connection Connect the cable properly to the RC via PCI

Check if the reading in the RCM malfunction malfunction log "RCM fault" is Replace the RCM present

1) Check if LEDs on the CPM are lit 2) Check if the screen lights but no readings are visible MMI is low contrast 3) Push the button “Contrast” Adjust the brightness several times till the readings become clearly visible

1) Download System settings from the RCM 2) Check the CPM mode The CPM mode is disabled via Activate CPM mode via PCI PCI (“Conﬁguration” section) The CPM mode is disabled if the check box is not ticked

Wiring connecting the CPM and Check the connection of the plug Provide reliable connection the RCM is not connected “1” and plug “19” of the plugs “1” and “19” CPM properly 2 malfunction

Check if the reading in the RCM malfunction malfunction log "RCM fault" is Replace the RCM present

If the new CPM with new wiring works properly, replace the new Malfunction of the wiring wiring with the old one Replace the wiring connecting the RCM If the new CPM doesn't work and the CPM properly with the old wiring it is a wiring malfunction

If the new CPM works properly with CPM malfunction the old wiring it is a CPM Replace the CPM malfunction 124 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

12.3. Component replacement procedures 12.3.1. RCM replacement 12.3.1.1. Dismounting 1) Disconnect all wiring assemblies and the earthing wire connected to the RCM; 2) Unscrew four nuts ﬁxing the RCM and remove the washers (see Figure 90); 3) Pull the RCM from the ﬁxing studs and take it out of the housing.

Nuts

Fig.90. RCM with fixing nuts and washers 12.3.1.2. Installation 1) Install the RCM on the fixing studs inside the RC5_3; 2) Tighten four nuts fixing RCM; 3) Connect the wiring to the RCM according to the wiring assembly diagram (see Appendix 4). 12.3.2. CPM replacement 12.3.2.1. Dismounting 1) Disconnect the plug “19” from the CPM; 2) Unscrew six nuts fixing the CPM and remove the washers (see Figure 91); 3) Pull the CPM from the fixing studs and take it out of the housing.

CPM

Fig.91. Nuts holding CPM on RC5_3 internal door 125 TECHNICAL MANUAL

12.3.2.2. Installation 1) Install the CPM on the fixing studs inside the RC5_3; 2) Tighten six nuts fixing the CPM; 3) Connect the plug “19” to the CPM. 12.3.3. PSFM replacement 12.3.3.1. Dismounting 1) Make sure that there is no voltage on any inputs of the PSFM; 2) Disconnect all auxiliary supply wiring from the PSFM; 3) Disconnect the plug "14" from the RCM; 4) Remove cable ties fixing cable "14"; 5) Disconnect the earthing wires connected to the PSFM; 6) Disconnect the earthing wire connected to the anti-condensation kit (if installed); 7) Unscrew three nuts fixing the anti-condensation kit and remove the washers (see Figure 92); 8) Take the anti-condensation out of the housing; 9) Unscrew two nuts fixing the PSFM and remove the washers; 10) Take the PSFM out of the housing.

Nuts

Fig.92. PSFM fixing provision 12.3.3.2. Installation 1) Install the new PSFM on the fixing studs inside the RC5_3; 2) Tighten two bottom nuts with washers fixing the PSFM; 3) Connect the earthing wire from the control cubicle to the stud on the PSFM marked with the grounding sign. 4) Connect the earthing wire from the PSFM connection to the stud on the control cubicle located above the PSFM; 5) Install the anti-condensation kit on the fixing studs inside the RC5_3; 6) Tighten three nuts with washers fixing the anti-condensation kit and PSFM; 7) Connect the earthing wire to the anti-condensation kit marked with the grounding sign. 8) Connect plug "14" to RCM; 9) Install cable ties to fix cable "14"; 10) Connect the auxiliary supply wiring to the inputs of the PSFM. 12.3.4. Battery replacement 12.3.4.1. Dismounting 1) Switch off the battery circuit breaker; 2) Disconnect the plug “13” from the RCM; 3) Disconnect the wires from the battery terminals - the minus terminal should be disconnected first; 4) Unscrew four bolts from the battery fixing plate (see Figure 93); 5) Remove the Battery. 126 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Battery terminals

Bolts

Fig.93. Battery fixing provisions. 12.3.4.2. Installation 1) Place the battery on the mounting frame inside the RC5_3; 2) Install battery fixing plate and fix it with four bolts; 3) Install plus terminal to the battery; 4) Install battery temperature sensor and minus terminal to the battery; 5) Connect the plug “13” to the RCM; 6) Switch on the battery circuit breaker.

12.3.5. Battery sensor replacement 12.3.5.1. Dismounting 1) Turn the battery switch off; 2) Disconnect plug “13” from the RCM; 3) Disconnect the wires from the battery terminals (the minus terminal must be disconnected ﬁrst); 4) Remove cable ties ﬁxing the cable that leads to the battery sensor and to the battery “+”terminal; 5) Disconnect the battery sensor. 12.3.5.2. Installation 1) Turn the battery switch off; 2) Install “+” terminal to the battery “+” terminal; 3) Install battery sensor and minus terminal to the battery; 4) Connect wires that lead to battery sensor and to battery “+”terminal to the plug “13” according their numbering (wire marked 1 is installed in input 1 and so on); 5) Turn the battery switch on. 12.3.6. OSM replacement OSM dismounting should be done in reverse order of installing described in section "9.4.1 OSM installation".

NOTE! Each OSM is supplied with current and voltage sensor (CVCS) coefﬁcients, if the OSM has been replaced, it is necessary to upload new CVCS coefﬁcients into the RC. 12.3.7. RC replacement RC5_3 dismounting should be done in reverse order of installing described in section "9.4.2 RC installation". 12.3.8. VT replacement VT dismounting should be done in reverse order of installing described in section "9.4.3 VT installation". 12.3.9. SA replacement OSM dismounting should be done in reverse order of installing described in section "9.4.4 SA installation". 12.3.10. Telecommunication equipment replacement Communications equipment dismounting should be done in reverse order of installing described in section "9.4.5 Telecommunications equipment installation". 127 TECHNICAL MANUAL

APPENDIX 1. TYPE TESTS

Type tests of Rec15_Al

Standard Chapter Test name Test center name Test report

6.2.6.1 Power-frequency withstand voltage test (dry) KEMA KEMA_1487-15

6.2.6.1 Power-frequency withstand voltage test (wet) KEMA KEMA_1487-15

6.2.6.2 Lightning impulse withstand voltage test KEMA KEMA_1487-15

6.4 Measurement of the resistance of the main circuit KEMA KEMA_1488-15

6.5 Temperature-rise tests KEMA KEMA_1488-15

Short time withstand current and peak withstand 6.6 KEMA KEMA_2268-15 current tests

KEMA_1489-15 6.7 Veriﬁcation of the protection KEMA KEMA_1104-16

X-radiation test procedure for vacuum 6.11 KEMA KEMA_1493-15 IEEE C37.60-2012 interrupters

6.101 Line charging and cable charging current tests KEMA KEMA_ 2422-15

6.102 Making current capability KEMA KEMA_2268-15

6.103 Rated symmetrical interrupting current tests KEMA KEMA_2268-15

6.105 Minimum tripping current tests KEMA KEMA_1474-15

6.106 Partial discharge (corona) tests KEMA KEMA_1487-15

6.108 Time-current tests KEMA KEMA_1474-15

6.109 Mechanical duty test KEMA KEMA_2424-15

Control electronic elements surge withstand 6.111 KEMA KEMA_1475-15 capability (SWC) tests

6.2.1.1 Lightning impulse withstand voltage test KEMA KEMA_03-1087

6.2.1.2 Power-frequency withstand voltage test (dry) KEMA KEMA_03-1087

6.2.1.2 Power-frequency withstand voltage test (wet) KEMA KEMA_03-1087

6.2.1.3 DC withstand test voltage PowerTech PowerTech_18490-27 IEEE C37.60-2003 6.3.2.1 Load switching tests KEMA KEMA_274-03

6.3.2.2.2 Line charging current test KEMA KEMA_274-03

6.3.2.2.3 Cable charging current test KEMA KEMA_274-03

6.3.2.3 Transformer magnetizing current switching tests PowerTech PowerTech_18930-26 128 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Standard Chapter Test name Test center name Test report

6.4 Making current capability KEMA KEMA_109-04

6.5 Rated symmetrical interrupting current tests KEMA KEMA_109-04

6.6 Minimum tripping current tests PowerTech PowerTech_18919-21-REP3

6.7 Partial discharge (corona) tests PowerTech PowerTech_18490-27 IEEE C37.60-2003 6.10 Temperature rise test KEMA KEMA_03-1088

6.11 Time–current tests PowerTech PowerTech_18919-21-REP2

6.12 Mechanical duty test PowerTech PowerTech_18919-21-REP4

Control electronic elements surge withstand 6.13 PowerTech PowerTech_18490-27 capability (SWC) tests

Lightning impulse withstand voltage test on IEC 60255-5 10.5.3 KEMA KEMA_1475-15 auxiliary and control circuits

IEC 60068-2-1 - Cold test - operational KEMA KEMA_1472-15

IEC 60068-2-2 - Dry heat test - operational KEMA KEMA_1472-15

Simulated solar radiation at ground level and IEC 60068-2-5 - KEMA KEMA_1473-15 guidance for solar radiation test

IEC 60068-2-30 - Cyclic temperature with humidity test - operational KEMA KEMA_1472-15

KEMA_1471-12 IEC 60870-5-104 - Communication protocol test KEMA KEMA_12-01304 Ed.2 KEMA_E-16-I-008-AC KEMA_E-16-I-009-AC

EDP Speciﬁcation - Battery test KEMA KEMA_1471-12

ESKOM Light-to-medium and heavy-to-very heavy - KIPTS KIPTS 31-07-2010 Speciﬁcation pollution test cycles 129 TECHNICAL MANUAL

Type tests of Rec25_Al

Standard Chapter Test name Test center name Test report

KEMA KEMA_1490-15 6.2.6.1 Power-frequency withstand voltage test (dry) CESI CESI_B3002266

KEMA KEMA_1490-15 6.2.6.1 Power-frequency withstand voltage test (wet) CESI CESI_B3002266

KEMA KEMA_1490-15 6.2.6.2 Lightning impulse withstand voltage test CESI CESI_B3002266

6.4 Measurement of the resistance of the main circuit KEMA KEMA_1491-15

6.5 Temperature-rise tests KEMA KEMA_1491-15

Short time withstand current and peak withstand 6.6 KEMA KEMA_2269-15 current tests

KEMA_1489-15 IEEE C37.60-2012 6.7 Veriﬁcation of the protection KEMA KEMA_1104-16

X-radiation test procedure for vacuum 6.11 KEMA KEMA_1493-15 interrupters

6.101 Line charging and cable charging current tests KEMA KEMA_2423-15

6.102 Making current capability KEMA KEMA_2269-15

6.103 Rated symmetrical interrupting current tests KEMA KEMA_2269-15

6.105 Minimum tripping current tests KEMA KEMA_1471-15

6.106 Partial discharge (corona) tests KEMA KEMA_1490-15

6.108 Time-current tests KEMA KEMA_1474-15

6.109 Mechanical duty test KEMA KEMA_2425-15

Control electronic elements surge withstand KEMA_1492-15 6.111 KEMA capability (SWC) tests KEMA_1475-15

6.2.1.1 Lightning impulse withstand voltage test CESI CESI_A8026525

6.2.1.2 Power-frequency withstand voltage test (dry) CESI CESI_A8026525

6.2.1.2 Power-frequency withstand voltage test (wet) CESI CESI_A8026525 IEEE C37.60-2003 6.3.2.1 Load switching tests CESI CESI_A9007127

6.3.2.2.2 Line charging current test CESI CESI_A9007127

6.3.2.2.3 Cable charging current test CESI CESI_A9007127 130 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Standard Chapter Test name Test center name Test report

6.4 Making current capability CESI CESI_A9007127

6.5 Rated symmetrical interrupting current tests CESI CESI_A9007127

6.6 Minimum tripping current tests CESI CESI_A8027496

6.7 Partial discharge (corona) tests CESI CESI_A8034569 IEEE C37.60-2003 6.8 Radio inﬂuence voltage tests (RIV) CESI CESI_A8035054

6.10 Temperature rise test CESI CESI_A8027496

6.11 Time–current tests KEMA KEMA_1510-10

6.12 Mechanical duty test CESI CESI_A8034408

Lightning impulse withstand voltage test on IEC 60255-5 10.5.3 KEMA KEMA_1475-15 auxiliary and control circuits

IEC 60068-2-1 - Cold test - operational KEMA KEMA_1472-15

IEC 60068-2-2 - Dry heat test - operational KEMA KEMA_1472-15

Simulated solar radiation at ground level and IEC 60068-2-5 - KEMA KEMA_1473-15 guidance for solar radiation test

IEC 60068-2-30 - Cyclic temperature with humidity test - operational KEMA KEMA_1472-15

KEMA_1471-12 IEC 60870-5-104 - Communication protocol test KEMA KEMA_12-01304 Ed.2 KEMA_E-16-I-008-AC KEMA_E-16-I-009-AC

EDP Speciﬁcation - Battery test KEMA KEMA_1471-12

ESKOM Light-to-medium and heavy-to-very heavy - KIPTS KIPTS 31-07-2010 Speciﬁcation pollution test cycles 131 TECHNICAL MANUAL

APPENDIX 2. TCC

General Time current curves (TCC) are supported by OC and EF protection elements. Available TCC are listed in Table 112. Table 112. TCC types

Setting Designation Range Default

ANSI: Extremely Inverse (EI), Moderately Inverse (MI), Very Inverse (VI)

Type of time IEC: Extremely Inverse (EI), Very Inverse (VI), Inverse (I) TCC TD current characteristic Deﬁnite Time (TD)

TEL A, TEL I (custom): custom curves are available on request.

Time deﬁnite TCC Time deﬁnite (TD) TCC is presented in Figure 94. TCC settings are described by two parameters: pickup current and tripping time. The range of these parameters is described in Table 110. TD TCC is provided with an instantaneous reset timer.

Fig.94. TD TCC Table 113. TD TCC settings

Setting Designation Range Resolution

Pickup current, A Ip 5-6000 1

Tripping time, s Tt 0.00-100.00 0.01 132 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Inverse-time TCC (IEC and ANSI) IEC / ANSI TCC are described by the following general equation:

where: A, B, n – ANSI / IEC TCC constants;

TM – time multiplier;

Iac – asymptote current;

Tadd – time adder. The constants are characterized by the type of current curve that is used. Types of current curves are described in Table 108. All constants correspond to the values described in the IEC 60255-151. Other parameters are variables and selected by the user. The range of these parameters is described in Table 109-110. There are also three additional parameters that characterize the curve:

Ip - pickup current when protection element starts counting its tripping time;

Tmax - maximum tripping time. If the calculated tripping is higher than Tmax, the tripping time is automatically reduced to Tmax;

Tmin - minimum tripping time. If the calculated tripping time is lower than Tmin, the tripping time is automatically increased to Tmin.

IEC / ANSI TCC normally consist of three sections and presented in Figure 95.

1st section

2nd section

3rd section

Fig.95. IEC / ANSI TCC (general view)

If ,than the 1st section is absent and TCC has the following appearance: 133 TECHNICAL MANUAL

2nd section

3rd section

Fig.96. ANSI TCC (1st section absent)

If Tmin < T add than the 3rd section is absent and TCC has the following appearance:

1st section

2nd section

Fig.97. ANSI TCC (3rd section absent)

For IEC TCC, the reset time is constant and equal to Tres selected by the user. If the current value is below the pickup setting, then the protection element counter does not immediately drops to zero, but counts the reset time. For ANSI TCC the reset time is described by the following general equation:

where: D – ANSI TCC constant 134 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Table 114. Available ANSI / IEC TCC

TCC type Designation A B n D

Extremely Inverse ANSI EI 28.2 1.217 2.0 4.85

Very Inverse ANSI VI 19.61 0.114 2.0 21.6

Moderately Inverse ANSI MI 0.0515 0.114 0.02 29.1

Extremely Inverse IEC EI 80 0 2.0 custom

Very Inverse IEC VI 13.5 0 1.0 custom

Inverse IEC I 0.14 0 0.02 custom

Table 115. ANSI TCC settings

Settings Designation Range Resolution Default

Asymptote current, A Ias 5-1280 1 100

Time multiplier Tm 0.01-15.00 0.01 1.00

Minimum time, s Tmin 0.05-100.00 0.01 0.05

Maximum time, s Tmax 0.05-100.00 0.01 10.00

Pickup current, A Ip 5-6000 1 100

Time adder, s Ta 0.00-2.00 0.01 0.00

Table 116. IEC TCC settings

Settings Designation Range Resolution Default

Asymptote current, A Ias 5-1280 1 100

Time multiplier Tm 0.01-15.00 0.01 1.00

Minimum time, s Tmin 0.05-100.00 0.01 0.05

Maximum time, s Tmax 0.05-100.00 0.01 10.00

Pickup current, A Ip 10-6000 1 100

Time adder, s Ta 0.00-2.00 0.01 0.00

Reset time, s Tres 0.00-20.00 0.01 0.00 135 TECHNICAL MANUAL

TEL Inverse TCC (TEL I) TEL I TCC consists in general case of three inverse sections:

Fig.98. TEL I TCC (general view) TEL I TCC parameters are described in Table 111. Each separate section can be described with the following parameters:

Fig.99. TEL I TCC (section description) Where:

Ias - asymptote current;

Ib , T b - current and time corresponding to the beginning of particular section;

Ie , T e - current and time corresponding to the end of particular section. 136 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

When Ias is set to minimum possible value (10 A) the curvature of this section will be minimum. It will increase with I as approaching Ib :

Fig.100. EL I TCC (asymptote current effect on shape of the curve) If the number of TEL I TCC sections is two then the curve has the following appearance:

Fig.101. TEL I TCC (two-section curve example) If the number of TEL I TCC sections is one then the curve has the following appearance:

Fig.102. TEL I TCC (one-section curve example) 137 TECHNICAL MANUAL

Table 117. TEL I TCC settings

Settings Designation Range Resolution Default

Number of sections NA 1/2/3 NA 3

Maximum time Tmax 0.05-100.00 s 0.01 s 10.00 s

First intermediate time T1 0.05-100.00 s 0.01 s 0.05

Second intermediate time T2 0.05-100.00 s 0.01 s 0.25 s

Minimum time Tmin 0.05-100.00 s 0.01 s 0.05 s

Pickup current I p 10-6000 A 1 A 100 A

First intermediate current I1 10-6000 A 1 A 500 A

Second intermediate current I 2 10-6000 A 1 A 1000 A

Maximum current I max 10-6000 A 1 A 3000 A

First section asymptote I as1 1-6000 A 1 A 10 A

Second section asymptote I as2 1-6000 A 1 A 10 A

Third section asymptote I as3 1-6000 A 1 A 10 A

Parameters Tmax, T1, T2, Tmin, I min, I1, I 2, I max can be only set when the following inequalities are valid: I min < I1 < I 2 < I max , Tmax > T2 > T1 > Tmin . When the number of sections is reduced or increased, default values for Tmax, T1, T2, Tmin, I min, I1, I 2, I max, I as1, I as2, I as3 are set. These parameters can be set manually or by using the TELARM software. TEL I is provided with an instantaneous reset timer. 138 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

APPENDIX 3. DIMENSIONS

OSM15_Al_1 dimensions

Fig.103. OSM15_Al_1(2) Dimensions

Dimensions, mm Weight, kg Creepage distance Minimum taut string distance

497 204 68

OSM25_Al_1 dimensions

Fig.104. OSM25_Al_1(2) Dimensions

Dimensions, mm Weight, kg Creepage distance Minimum taut string distance

868 204 72 139 TECHNICAL MANUAL

RC5_3 dimensions

Fig.105. Dimensions of RC5_3 140 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Umbilical cable dimensions

Fig.106. Dimensions of Umbilical cable

Part number L, m Weight, kg

RecUnit_Umbilical_5(7) 7 6

RecUnit_Umbilical_5(10) 10 8

RecUnit_Umbilical_5(12) 12 10

RecUnit_Umbilical_0(02) 2 2.5 141 TECHNICAL MANUAL

ITS dimensions 330

ITS/TEL-01

TAVRIDA ELECTRIC

406 174

Fig.107. ITS overall dimensions with closed case cover

° 110 430

425

Fig.108. ITS overall dimensions with opened case cover 142 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Voltage transformer dimensions

Ø13

Fig.109. RecComp_VT15_1

Fig.110. RecComp_VT25_1 143 TECHNICAL MANUAL

Surge arrester dimensions

Fig.111. SA dimensions

Rated voltage H, mm Ø1, mm Ø2, mm

12 165 76 106

15 205 81 111

18 205 81 111

24 245 81 111

27 325 86 116

30 325 86 116 144 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

APPENDIX 4. WIRING DIAGRAMS

Main wiring circuits

Connector Designation Wiring assembly Description

RCM “1” WA:CPM-MPM – XS2 TER_RecUnit_Harness_2 Control and indication circuits106

RCM “2” - - USB-B – for connection PC with TELARM (additional port)

RCM “3” - - USB-A-1

RCM “4” BTM cable – XP1 RecComp_Cable_USB(0.75) USB-A-2 for Bluetooth module connection111

RCM “5” - - COM2 (RS232) for TDI/PCI116

RCM “6” WA:MPM-RTU – XS1 FS-TR_Unit_Harness_53 COM1 (RS232) for TCI

RCM “7” WA:RCM-CC – XS1 TER_RecUnit_Harness_78 Connections to Control Cable (indication and measuring circuits)

RCM “8” WA:RCM-CC – XS2 Connections to Control Cable (control circuits)

RCM “9” WA:RCM-DPS – XS1 TER_RecUnit_Harness_74 Door Position Switch

RCM “10” XP1 - RTU power supply

RCM “12” - - Not used

RCM “13” WA:PSM-BAT – XS1 FS-TR_Unit_Harness_54 Battery

RCM “14” WA:PSFM-RCM– XS1 FS-TR_Unit_Harness_151 Power supply AC (85…265 V)

PSFM “14” WA:PSFM-MCB TER_RecUnit_Harness_75 Miniature circuit breakers

IOM “15” XS4 XS4 I/O module (Outputs)

IOM “16” XS3 XS3 I/O module (Inputs)

IOM “17” XS2 XS2 I/O module (Outputs)

IOM “18” XS1 XS1 I/O module (Inputs)

CPM “19” WA:CPM-MPM – XS1 WA:CPM-MPM – XS1 Control and indication circuits

RCM “20” WA:RCM-CC – XP1 TER_RecUnit_Harness_78 Control Cable Harthing connector

BTM "21" BTM cable – XS1 BTM cable – XS1 Bluetooth module connection

RTU "23" WA:MPM-RTU - XP1 FS-TR_Unit_Harness_53 RTU (optional) 145 TECHNICAL MANUAL

FS-TR_Unit_Harness_54

TER_RecUnit_Harness_74 TER_RecUnit_Harness_2

RecComp_Cable_USB(0.75)

FS-TR_Unit_Harness_151 TER_RecUnit_Harness_78 TER_RecUnit_Harness_75

Fig.112. RC5_3 wiring diagram 146 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

TEE_RecUnit_Umbilical_5(XX)*

X2 X1 OSM15_Al_1/OSM25_Al_1 TEE_RecUnit_RC5_3

X2 X1

+Ia1 2 10 +Ia1 CTA -Ia1 9 14 -Ia1 +Ib1 5 11 +Ib1 CTB -Ib1 12 15 -Ib1 +Ic1 42 12 +Ic1 CTC -Ic1 35 16 -Ic1 9 C1 +Ua1 4 18 +Ua1 -Ua1 11 22 -Ua1 C2 +Ub1 7 19 +Ub1 -Ub1 14 23 -Ub1 C3 +Uc1 40 20 +Uc1

-Uc1 33 -Uc1 24 -Uc1 13 Q1

+I0 1 -Uc1 17 +I0

CT0A CT0B CT0C -I0 8 21 -I0 25

C4 +Ua2 3 26 +Ua2 -Ua2 10 30 -Ua2 C5 +Ub2 6 27 +Ub2 -Ub2 13 31 -Ub2 C6 +Uc2 41 28 +Uc2 Manual -Uc2 34 32 -Uc2 Trip 29 EM1 39 1 EM1 SW1 1 2 EM2 37 3 EM2 2 Aux2.1 29 5 Aux2.1 1SW2 4 Aux2.2 22 7 Aux2.2 8 Screen Screen 4 4 6 6 LENGHT ACCORDING TO PURCHASE ORDER * GND1

Fig.113. RecUnit_Umbilical_5 wiring diagram 147 TECHNICAL MANUAL

Fig.114. RecUnit_Umbilical_0 wiring diagram 148 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

Fig.115. TER_RecUnit_Harness_78 wiring diagram

Fig.116. TER_RecUnit_Harness_2 wiring diagram 149 TECHNICAL MANUAL

WA:PSFM-MCB

Fig.117. TER_RecUnit_Harness_75 wiring diagram

WA:PSFM-RCM

Fig.118. FS-TR_Unit_Harness_151 wiring diagram

WA:PSM-BAT

Fig.119. FS-TR_Unit_Harness_54 wiring diagram 150 REC SERIES AUTOMATIC CIRCUIT RECLOSERS

WA:RCM-DPS "9" DPS DOOR WAKEUP_DPS C NO RECLOSER CONTROL MODULE 1 GNDDOOR 2

Fig.120. TER_RecUnit_Harness_74 wiring diagram

WA:MPM-RTU "6" "23" COM2_DCD COM2_DCD 1 1 COM2_RX COM2_RX 2 2 COM2_TX COM2_TX 3 3 COM2_DTR COM2_DTR 4 4 COM2_DSR RTU (OPTIONAL) COM2_DSR 6 6 COM2_RTS RECLOSER CONTROL MODULE COM2_RTS 7 7 COM2_CTS COM2_CTS 8 8 COM2_RI COM2_RI 9 9 GND GND 5 5

Fig.121. TER_RecUnit_Harness_74 wiring diagram 151 TECHNICAL MANUAL

Rec series recloser principal diagram

Fig.122. Rec series recloser principal diagram Tavrida Electric worldwide

RUSSIA ESTONIA LITHUANIA AS Tavrida Electric Export AS Tavrida Electric Export AS Tavrida Electric Export 3rd floor, 1A, Grizodubovoy str., 14, Visase str., 222 Ukmerges, 123007 Moscow Russia Tallinn 11415 Estonia Vilnius 07157 Lithuania Tel./Fax: +7 (499) 530-22-05 Tel.: +372 606 47 57 Mobile: +370 614 49015 Fax: +372 606 47 59 Fax: +372 606 47 59 E-mail: [email protected] E-mail: [email protected] E-mail: [email protected] Web: www.tavrida.eu Web: www.tavrida.eu Web: www.tavrida.lt

POLAND ROMANIA EGYPT Tavrida Electric Poland sp. z o.o. SC Energobit Tavrida SRL Tavrida Electric North And East Africa S.A.E Graniczna 44, Romania 400221 Cluj Napoca, Building Number 476, Street Number 9, D area, 43-100 Tychy Poland Industrial Park Tetarom I, Mokattam, 11571, Cairo, Egypt Taietura Turcului str., 47/11 Tel.: +48 (32) 3271986 Tel.: +40 264 207 583 / 584 Tel.: (+202) 25079317 Fax: +48 (32) 3271987 Fax: +40 264 207 555 Fax: (+202) 25079319 E-mail: [email protected] E-mail: [email protected] E-mail: [email protected] Web: www.tavrida.pl Web: www.tavrida.ro Web: www.tavrida.eu

rev. 2. 1.4.2018 This document is copyright and is intended for users and distributors of Tavrida Electric products. It contains information that is the intellectual property of Tavrida Electric and this document, or any part thereof, should not be copied or reproduced in any form without the prior permission of Tavrida Electric Tavrida Electric applies a policy of ongoing development and reserves the right to change products without notice. Tavrida Electric does not accept any responsibility for loss or damage incurred as a result of acting or refraining from action based on information in this Catalogue.