REC15_AL / REC25_AL
REC SERIES AUTOMATIC CIRCUIT RECLOSER
TECHNICAL MANUAL
ISO 9001:2008 certification
ISO 14001:2004 certification
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
2
Copyright © Tavrida Electric,
All Rights Reserved
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
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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
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
4
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
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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
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
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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
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TECHNICAL MANUAL
1. INTRODUCTION
1.1 General information
Thank you for choosing this Tavrida Electric product. The Rec
series automatic circuit reclosers are designed for use on
overhead distribution lines as well as distribution substation
applications for rated voltages of up to 27kV.
The Rec series automatic circuit recloser has been designed for
use as a stand-alone device, but can be easily integrated into
distribution automation and remote control schemes using the
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
for competence in the use of the equipment described.
Installation, use and servicing should only be carried out by
1.2.1 Personnel competence
A competent technician has these qualifications:
•
•
Is thoroughly familiar with the instructions given in this
technical manual;
Is trained in industry-accepted medium- and low voltage
safe operating practices and procedures;
trained and experienced personnel who are familiar with the
equipment and with electrical safety requirements.
•
Is trained and authorized to energize, de-energize, clear and
ground power distribution equipment;
•
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.
1.2.2 Hazard statements
This manual may contain three types of hazard statements:
WARNING: Indicates a potentially hazardous
situation that, if not avoided, could result in death or
serious injury
NOTE: Indicates important items of information
throughout the manual
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
cover all variations of the equipment and processes being
described. Neither can it cover all contingencies connected with
installation and operation of the device. For any further or more
detailed information please contact your nearest TAVRIDA
ELECTRIC EXPORT Office.
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REC SERIES AUTOMATIC CIRCUIT RECLOSERS
1.4 Abbreviation
ABR
ANSI
AR
ART
BAT
BF
BIL
BS
BTM
CC
CCV
CLC
CL
CLP
CM
CPM
CT
CU
D
DCE
DMS
DPS
DTE
EDR
EF
EF1
EF2
EF3
EL
FDIR
FL
GPRS
GSM
HL
I
I/O
IEC
IED
IEEE
IOI
IOM
IP
ISO
ITS
KIPTS
LAN
LCD
Automatic Backfeed Restoration
American National Standards Institute
Autoreclosing
Autoreclosing timeout
Battery
Bolted Fault
Basic Insulation Level
British Standard
Bluetooth Module
Control Cable (Umbilical)
Close Condition Verifier
Close Logic Control
Comms log
Cold Load Pickup
Change Messages
Control Panel Module
Current transformer
Current unbalance
Delayed
Data Communications Equipment
Data Management System
Door Position Switch
Data Terminal Equipment
Enhanced data rate
Earth Fault protection element
Low set Earth Fault protection element for Delayed
trips
Low set Earth Fault protection element for
Instantaneous trips
High set Earth Fault protection element for
Instantaneous trips
Event Log
Fault Detection, Isolation and Recovery
Fault Locator
General Packet Radio Service
Global System for Mobile Communications
Hot Line protection element
Instantaneous
Input/Output
International Electrotechnical Commission
Intelligent Electronic Device
The Institute of Electrical and Electronics Engineers
Input/Output Interface
Input/Output Module
Ingress protection
International Organization for Standardization
Interface test set
Koeberg Insulator Pollution Test Station
Local Area Network
Liquid Crystal Display
LED
LP
LS
MCB
ME
ML
MMI
MPM
OC
OC1
Light-emitting diode
Load Profile
Loss of Supply protection element
Miniature circuit breaker
Measurement element
Malfunction Log
Man Machine Interface
Main Processor Module
Overcurrent protection element
Low set Overcurrent protection element for Delayed
trips
OC2
Low set Overcurrent protection element for
Instantaneous trips
OC3
High set Overcurrent protection element for
Instantaneous trips
OSM
Outdoor Switching Module
OF
Over Frequency
OV
Over Voltage
PC
Personal computer
PCI
Personal Computer Interface
PSFM
Power Supply Filter Module
PSM
Power Supply Module
RC
Recloser Control Cubicle
RCIS
RC Internet Server software
RCM
Recloser Control Module
RMS
Root mean square
RTC
Real Time Clock
RTU
Remote Telecommunication Unit
SA
Surge arrester
SCADA
Supervisory Control And Data Acquisition
SD
Source Detector
SEF
Sensitive Earth Fault
SI
Synchronization Indicator
SMS
Short Message Service
TEL
Tavrida Electric
TELARM Tavrida Electric Automated Relay Manager
TCC
Time-current curve
TCI
Telecommunications Interface
TD
Time-definite
TDI
Telarm Dispatcher Interface
UF
Under Frequency
USB
Universal Serial Bus
UV
Under Voltage
VRC
Voltage Reclosing Control
VT
Voltage Transformer
VU
Voltage Unbalance
ZSC
Zone Sequence Coordination
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TECHNICAL MANUAL
2. PRESENTATION
2.1 Product application field
Reclosers can be applied in radial or loop overhead distribution
lines. The main applications are:
The recloser can also be used at outdoor substations feeding
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;
•
•
Isolating sustained faults in a network where conventional
protection coordination is not possible;
Substation busbar coupler breaker with backfeed
restoration capability;
•
Substation switchgear incoming feeder breaker with
overcurrent protection for busbar faults, undervoltage
protection for backfeed restoration purposes and interfaces
for transformer protection.
•
Automatic backfeed restoration.
2.2 Key benefits
Tavrida Electric Rec series reclosers provide the following
competitive advantages:
Ÿ
tap changer operations, network overload and over- or
under-generation.
Maintenance free
Embedded Intelligent Electronic Device (IED), Remote
Terminal Unit (RTU) and metering capability ensure that the
Rec series reclosers are SCADA-ready with no additional
expenses.
The lifetime maintenance free Outdoor Switching Module
(OSM) provides 30 000 rated current and 200 full rated short
circuit CO operations.
Tavrida Electric Rec series reclosers are designed to keep
utility expenses to a minimum over their entire lifespan.
They are installed to significantly improve a network's
reliability key performance indicators and their use results
in a quick return on investment.
Ÿ
Lightweight
Ÿ
TELARM® user software provides exceptional management
tools for power quality, for protection and for fault simulation
along with advanced local and remote communications
ability.
Ÿ
Tavrida Electric's light weight vacuum circuit breaker and
robust aluminum tank result in a total weight of 68 kg for
OSM15 rated 15.5 kV and 72 kg for OSM25 rated 27 kV,
making it the most lightweight outdoor switching module on
the market.
As a result, shipment, handling, installation and
commissioning are fast and simple.
Ÿ
Sophisticated measurements system
The OSM 15 and OSM25 are equipped with six combined
current and voltage sensors built into the bushings. This
makes the Rec series reclosers ideal devices for selfhealing loop automation solutions.
Ÿ
Advanced control and protection
Tavrida Electric reclosers provide protection from various
faults, including: short circuits, earth faults, high
impedance earth faults, broken wires, islanding, incorrect
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.
Advanced user software
Perfect solution for Smart Grids
Complex measurement system combined with IED and RTU
makes the Rec series recloser the perfect solution for Smart
Grids. Tavrida Electric reclosers allow utilities to implement
Smart Grid philosophies and deploy advanced self-healing
or fault detection, isolation, and restoration (FDIR) systems.
Ÿ
Environmentally friendly
The Tavrida Electric OSM is an air insulated outdoor circuit
breaker with a patented combined insulation that makes it
the environmentally friendly - no oil or hazardous SF6
despite its compact size.
An aluminum tank offers excellent protection against
corrosion. UV resistant silicon rubber bushings are capable
of withstanding temperatures ranging from -40 to +55°C and
provide excellent hydrophobicity.
Design reliability is proven by the most severe climate and
heavy pollution tests at the Koeberg Insulator Pollution Test
Station (KIPTS) in South Africa.
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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
systems up to 38 kV
IEEE C37.60 and IEC 62271-111
Electrical Relays - Part 5: Insulation coordination for measuring relays and
protection equipment
IEC 60255-5
Measuring relays and protection equipment - Part 151: Functional
requirements for over/under current protection
IEC 60255-151
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
ground level.
IEC 60068-2-5
Environmental testing - Part 2-30: Tests - Test Db: Damp heat, cyclic (12h + 12h
cycle)
IEC 60068-2-30
Electrical relays - Part 21: Vibration, shock, bump and seismic tests on
measuring relays and protection equipment - Section One: Vibration tests
(sinusoidal)
IEC 60255-21-1 Class 1 - Vibration Endurance
IEC 60255-21-1 Class 2 - Vibration Response
Electrical relays - Part 21: Vibration, shock, bump and seismic tests on
measuring relays and protection equipment - Section Two: Shock and bump
tests
IEC 60255-21-2 Class 1 - Shock Withstand
IEC 60255-21-2 Class 2 - Shock Response
IEC 60255-21-2 Class 1 – Bump
Electrical relays - Part 21: Vibration, shock, bump and seismic tests on
measuring relays and protection equipment - Section 3: Seismic tests
IEC 60255-21-3 Class 1 – Seismic
Electromagnetic compatibility (EMC) - Part 4-4: Testing and measurement
techniques - Electrical fast transient/burst immunity test
IEC 61000-4-4
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”.
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TECHNICAL MANUAL
3. PRODUCT CLASSIFICATION
3.1 General information
The Rec15_Al and Rec25_Al series automatic circuit reclosers
consist of the following components:
•
Umbilical control cable RecUnit_Umbilical_5 connecting
the OSM to the RC.
•
•
Recloser mounting kit.
•
TELARM software allowing:
Outdoor Switching Modules OSM15_Al_1 and OSM25_Al_1
are used for switching and reclosing in electrical power
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,
detailed fault profile, etc.);
3. Bird protection covers;
4. Set of fasteners;
4. Customizing control signal map for customer's SCADA
applications.
5. Routine tests certificate.
•
Recloser Control cubicle RecUnit_RC5_3 is microprocessor based controller which provides OSM control,
directional overcurrent, earth fault and sensitive earth fault
and auto reclosing relay, instantaneous metering, event log,
demand logger and remote terminal unit for remote control
in a single package. It consists of:
•
Technical documentation:
1. Technical manual;
2. Assembly instructions;
3. Principal circuit diagram;
4. Communication protocols user guides;
1. Recloser Control cubicle;
2. Bluetooth module, which provides point-to-point
wireless connection between the RC and TELARM
software;
3. USB cable (AM-AF, 0.75 m) for connecting the Bluetooth
module;
4. USB cable (AM-BM, 1.8 m) for connecting the RC to PC;
5. TELARM user guide;
6. RC Internet Server user guide.
•
Optional equipment and accessories:
1. Telecommunications equipment;
2. Outdoor surge arrestors;
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)
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REC SERIES AUTOMATIC CIRCUIT RECLOSERS
Table 3. Recloser Control cubicle
Part numbering
Group
RecUnit
SubGroup
RC5
Type
3
Parameter
Comments
-
Recloser Control cubicle RC_5 with support of Modbus/DNP3/IEC104
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
EA
IntBoard
IOM-03
-
Input/output module with a control voltage 100/250 VDC for discrete
telecommunication system.
EA
IntBoard
IOM-04
-
Input/output module with a control voltage 12/60 VDC for discrete
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
RecKit
RTU
3G
iRZ_RUH2b
3G gateway including power supply unit 12 VDC and antenna. Used for TELARM
TDI SCADA solution or customer's third party SCADA system.
RecKit
RTU
GSM
iRZ_MC55iT
GSM/GPRS modem including power supply unit 12 VDC and antenna. Used for
TELARM TDI SCADA solution.
RecKit
RTU
GSM
M2M_S130
GSM controller including power supply unit 12 VDC and antenna. Used for SMS
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
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 of Rec15/25 onto H-poles.
RecMount
OSM15
Ext
-
Extension kit for installation of RecMount_OSM15_1 onto plain walls.
RecMount
VT
1
-
VT15/VT25 mounting kit for vertical installation of VT onto cylindrical, trapezoidal
or conical poles.
RecMount
VT
2
-
VT15/VT25 mounting kit for horizontal installation of VT onto cylindrical,
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
Parameter1
Group
SubGroup
Type
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
Parameter1
Group
SubGroup
Type
Comments
RecComp
SA15
SAV
Metal oxide type surge arrestors (3 pcs.) encapsulated in a silicone rubber
housing, 12 kV rated voltage.
RecComp
SA25
SAV
Metal oxide type surge arrestors (3 pcs.) encapsulated in a silicone rubber
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
RecUnit AntiCond
5
-
Kit consisting of thermostat, hygrostat, heater, MCB and ventilation
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.
RecUnit Umbilical
PowerSupply TEE063.51
Power supply cable for auxiliary voltage transformer 10 m, type MCMK
2x1,5/1,5.
RecUnit Umbilical
PowerSupply TEE063.52
Power supply cable for auxiliary voltage transformer 24 m, type MCMK
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
OSM15_Al_1(2)
OSM25_Al_1(2)
1. Outdoor Switching Module;
2. Manual-tripping hook;
3. Bird protection covers;
4. Set of fasteners;
5. Umbilical control cable;
6. Routine tests certificate.
RecUnit_RC5_3
1. Recloser Control cubicle;
2. Bluetooth module;
3. USB cable (AM-AF, 0.75 m);
4. USB cable (AM-BM, 1.8 m);
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
Class and Type
OSM15_Al_1(2)
Outdoor, pole-mounted, combined (solid and air) insulation with arc extinguishing in
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
OSM Weight, kg
Bushing type
744x644x649
744x720x730
68
72
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%
30001
Altitude, m
Pollution
very heavy (as per IEC 60815)
Note:
1
OSM25_Al_1(2)
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
Rated maximum voltage, kV
OSM15_Al_1(2)
OSM25_Al_1(2)
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
Secondary circuits, kV, 1 min
60
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
16 (4 s)
12.5 (4 s)
Rated short time current withstand kA
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
Note:
1
Optional
2
Including control module reaction time
85
95
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
Coefficient, V/kA
Error limits of the coefficient at temperature 20 °C, at rated current, %
50/60
1.955…2.035
±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
Coefficient, V/kA
Error limits of the coefficient at temperature 20 °C, at rated current, %
50/60
1.955…2.035
± 3.5
Table 18. Voltage sensors
Parameter
Rated frequency, Hz
Range phase to earth voltage where accuracy guaranteed, kV
Operating temperature range (T), °C
Coefficient, V/kA
Error limits of the coefficient at temperature 20 °C, %
Rated value
50/60
0.3…16
-40…+55
0.114…0.126
±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
- max continuous output power, W
- max output power at 0.5 duty cycle (range 12-15 V), W
5…15, step 0.5
15
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
Note:
1
Without providing power for RTU and USB, without IOM, CPM not active
2
IOM, RTU are not included
620x835x409 mm
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)
4
2
IEC 61000-4-4 (Level IV)
100 (7)
IEEE C37.60, IEC 62271-111
Surge Immunity (applied to external AC voltage terminals), kV
- common
- transverse
Control elements surge withstand capability (SWC), kV (kA)
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
The greater of ±1% or ±2A
0 - 630 A
The greater of ±1% or ±0.5A
0 - 630 A
- 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
Phase currents
Residual current
Frequency
Note:
1
Applicable for sensor transformation coefficients declared in section 4.2
Table 22. Protection accuracy1
Parameter
Tolerance
Guaranteed range
- for phase overcurrent elements
the greater of ±2% or ±2A
10-6000A
- for earth overcurrent elements
the greater of ±5% or ±1A
1-1280A
the greater of ±1% or ±0.1kV
0.5-30kV
Operational pickup current
Operational pickup voltage1
24
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
Parameter
Operational pickup frequency
Phase accuracy
Tripping time for time current characteristics:
Tolerance
Guaranteed range
±0.05Hz
45-55Hz for Frated=50Hz
55-65 Hz for Frated=60Hz
±2°
at U1 ≥0.5 kV and I1 ≥40A
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
- 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
0-120s for all-time current
characteristics
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
- for IOM-03
12/24/30/48/60
110/125/220
Pickup voltage, V
- for IOM-04
- for IOM-03
Above 7
Above 70
Dropout voltage, V
- for IOM-04
- for IOM-03
Below 3
Below 30
25
Parameter
TECHNICAL MANUAL
Value
Maximum continuous voltage, V
- for IOM-04
- for IOM-03
75
275
Input resistance, not less, kOhm
- for IOM-04
- for IOM-03
3
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
Type
Value
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
- at -20°C
- at 0°C
- at +25°C
- at +40°C
- at +55°C
25
65
84
100
110
120
Float life, years
- at +20°C
- at +25°C
- at +30°C
- at +40°C
16
10
6.5
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
2
3
4
5
6
7
8
9
Fig.9. General arrangement of the OSM15
1.
2.
3.
4.
5.
6.
7.
8.
9.
Terminal
Six HV silicone bushings
Current sensors built into the bushings
Vacuum circuit breaker
Protective tank
Mechanical position indicator
Harting connector
Manual trip operation mechanism
Support rail
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
Creepage Distance
BIL level
Note:
1
Upon special request. For more details contact your local representative
15.5 kV
27 kV
497 mm
868 mm / 1058 mm1
110 kV
125 kV / 150 kV1
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
Refer to section “9.6. Connection of primary circuits” for more details.
Fig.16. OSM bushing plastic plugs
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
2
3
15
4
5
6
14
7
8
13
12
11
10
9
Fig.17. Vacuum Circuit Breaker
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)
9. Armature
10. Synchronizing shaft
11. Actuator coil
12. Interlocking pins
13. Auxiliary contacts
14. Frame
15. Support insulator
31
TECHNICAL MANUAL
5.1.7 Recloser control
Tavrida Electric Recloser Control provides the following
advantages:
Recloser Control Cubicle (RC)
Control panel with 6-lines-40-characters graphical LCD for
clear event indication.
Ÿ
The recloser control allows wide measurement capabilities,
including phase, neutral and sequence currents, phase,
phase-to-phase and sequence voltages, phase and 3-phase
active and reactive power and energy. Logging is provided for
key measurement data.
The recloser control provides sophisticated protection
functionality. The protection incorporates unique features
that significantly simplify the protection engineering
process.
Monitoring
Ÿ
Highly comprehensive log files;
Ÿ
Event Log;
Ÿ
Malfunction Log;
Ÿ
Communication Log;
Ÿ
Load Profile;
Ÿ
Fault Profile;
Ÿ
Protection Counters;
Ÿ
Lifetime Counters;
Ÿ
Log filling counters.
Ÿ
Advanced communication functionality including support of
different communication protocols and data communication
equipment including Bluetooth.
Ÿ
Exceptional configuration flexibility (ability to apply different
sets of local and remote communication interfaces).
TELARM User Software
Protection
Ÿ
Change Messages;
Communications
Measurement
Ÿ
Ÿ
Tavrida Electric Automated Relay Manager (TELARM) is
designed for the specific needs of electrical distribution
networks based on Tavrida Electric products. It allows:
Ÿ
Downloading logs, profiles, oscillograms, settings, etc;
Ÿ
Uploading protection, communication and system settings to
the device;
Ÿ
Recording logs (event, malfunction, communication, etc.),
provides detailed fault profile;
Ÿ
Customizing control signal map for customer's SCADA
applications.
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
7
8
9
2
3
4
10
5
11
1. Three-point locking system
2. Rubber seal
3. Fixing rod
4. 2 x IP65 glands for Power supply cable (ø9...17 mm)
5. Bluetooth module (BTM)
6. Anti-vandal cover of Control Cable
7. External door
8. Control panel module (CPM)
9. Internal door
10. Overcurrent miniature circuit breakers
11. Dust proof drainage filter
12. IP65 glands:
- 2 x ø 4…10 mm;
- 1 x ø 9…17 mm;
- 1 x ø 11...21 mm.
13. Earthing stud
14. Mounting brackets
6
12
13
14
Fig.18. RC5_3 with internal door closed
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REC SERIES AUTOMATIC CIRCUIT RECLOSERS
1
2
1.
2.
3.
4.
5.
6.
3
RTU mounting plate
Input/Output module (IOM)
Recloser Control Module (RCM)
Battery circuit breaker
Battery
Power supply filter module (PSFM)
4
5
6
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
1.
2.
3.
4.
Control cable terminal
Anti-vandal cover
Locking stud
Captive screw
TECHNICAL MANUAL
4
1
3
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
2
1. Dustproof drainage filter
2. Cable inlets
3. Earthing stud
1
3
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.
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REC SERIES AUTOMATIC CIRCUIT RECLOSERS
Door position
switch lever
Door position
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.
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TECHNICAL MANUAL
Table 26. Standard and optional components of RC5_3
Module or component
Standard
CPM
•
RCM
•
PSFM
•
BAT
•
BTM
•
Optional
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.
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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 2meter 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).
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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
-40
0.115
10.00
0
0.273
20
Temperature, °C
AF
Float Time, years
35
2.378
4.21
10.00
36
2.594
3.86
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.
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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
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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 plate
Mounting tray
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
Standard
IEEE 802.3
IEEE 802.3u
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
44
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
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REC SERIES AUTOMATIC CIRCUIT RECLOSERS
5.2.3 Indication
The open state of the OSM main contacts is indicated via
•
LED above
•
position window on the OSM
button
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
applications:
•
Low system frequency caused by local undergeneration,
islanding or generation system malfunctions;
•
Radial line recloser;
•
•
Normally closed ring recloser;
High system voltage caused by tap changer malfunctioning,
overgeneration or islanding. The protection prevents
sensitive load from damage;
•
Normally open ring recloser;
•
High system frequency caused by islanding.
•
Rezip recloser (sectionalizer) - provides protection and
reconfiguration in radial, ring and meshed networks where
conventional protection grading is impossible.
The radial line recloser provides the protection against the
following faults:
•
Short circuit. Phase-to-phase and three-phase short
circuits,
•
Earth fault. Single-phase and double-phase earth faults;
•
Bolted fault. Very low impedance fault, typically caused by
human factor or accident;
•
Low current earth fault caused by high impedance phase to
ground short circuit;
•
Upstream broken conductor. Conductor touching ground at
the source side;
•
Downstream broken conductor. Conductor touching ground
at the load side;
•
Low system voltage caused by incorrect network operation
mode, tap changer malfunction, undergeneration or
islanding. The protection prevents sensitive load, such as
motors, from overload and failure;
6.1.2 Protection elements
The ring line recloser provides Loss of Supply, Automatic
Backfeed Restoration and Close Condition Verifier (syncrocheck) functionality required for loop automation and selfhealing schemes. The ring line recloser provides protection
against the same faults as the radial line recloser. The ring line
recloser has directional element to determine power flow
direction. Ring line recloser has independently configurable
sets of settings for direct and reverse power flow direction.
The Rezip recloser is used to automate various networks where
traditional time and current grading is impossible. Unlike a
conventional recloser, the Rezip recloser can be used in ring and
meshed networks and self-healing schemes. Any number of
Rezip reclosers can be connected in series.
Protection elements against short circuit, high impedance earth
fault, low system voltage and low system frequency faults are
provided with independent reclosing elements.
The ring line recloser is provided with a unique setting-free
source detector. The source detector continuously detects the
direction the power flows through the recloser main contacts.
Reclosing elements as well as the Automatic Backfeed
Restoration are controlled by the Voltage Reclosing Control
(VRC). The VRC blocks autoreclosing if power quality doesn't
comply with customer requirements.
6.1.2.1 Source Detector (SD)
The source detector element has two main functions:
•
Provides power flow direction to directional protection
elements (ring operation mode);
•
Provides source side information for loss of supply
protection element.
Protection elements: AR OC, HL, AR SEF, VU, CU, AR UV, AR UF,
AR OV, AR OF and ABR operation depends on the source side
being identified. If power flows from “Source +“ side, then “Set
+“ protection settings are active, if power flows from “Source -“
side, then “Set -“ protection settings are active.
The SD element identifies the source side (SD = "Source found")
when the following conditions are met:
•
•
•
Recloser state = "Closed";
Positive sequence voltage U1 > Ust;
Positive sequence power P1 > 2,5 kW (cosφ>0,02).
Or
•
•
OSM state = "Open";
Positive sequence voltage U1 > Ust.
The SD element fails to identify the source side (SD = "Source
lost") if voltage and current drop below the level of sensitivity or
when the recloser is “Open“ and both sources are present.
If the “Operating mode” setting is “Disable” then the SD element
always identifies the source side as "Source found" (radial
recloser) and "Source found+" (ring recloser). As a result, the
SD element does not influence the protection elements.
SD settings are described in Table 33.
Bolted Fault (BF)
The BF element provides instantaneous tripping when bolted
fault conditions are detected. As it deals both with the positive
sequence voltage and current it provides better sensitivity for
bolted faults than conventional highset overcurrent elements.
The operation of the element can be described as follows: It
initiates an instantaneous trip request to the driver to open the
recloser when the phase current exceeds the Pickup current
value (Ip) and the positive sequence voltage is below 500V.
The element is blocked when the following signals are activated:
Ÿ
Protection Off.
BF settings are described in Table 34.
48
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
Table 33. SD settings
Setting
Operating mode
Source threshold voltage
Designation
Range
Default
Mode
Enable/Disable
Disable
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-tophase and three-phase short circuits.
OC protection consists of six (6) individual overcurrent elements
providing three stages of protection for both the Forward
(Source+) and Reverse (Source-) powerflow directions: OC1+,
OC1-, OC2+, OC2-, OC3+, OC3-.
OC1
Phase overcurrent low set element OC1 is designated to provide
time delayed trips. It is enabled in any selected sequence in the
Overcurrent Reclosing element. "I" (Instantaneous) stands for
accelerated and "D" (Delayed) for delayed step of overcurrent
protection in an autoreclosing sequence.
The operation of the element can be described as follows: It
becomes active when the phase current exceeds the Pickup
current value (Ip) multiplied by the Operational Cold Load
Multiplier. A timer is then activated for the duration of the
current dependent Tripping time (Tt) defined by the time current
characteristic TCC curves. When this time expires and the phase
current still exceeds a dropout value , OC1 initiates a trip request
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
timer is activated which expires as set by (Tres) after which this
element becomes passive again.
The element is blocked when the following signals are activated:
Ÿ
SD = "Source lost";
Ÿ
Hot Line On;
Ÿ
Protection Off.
Available TCC are presented in Table 35. OC1 settings are
described in Tables 37–41.
OC2
Phase overcurrent low set element OC2 is designated to provide
accelerated trips. If a sequence step in the Overcurrent
Reclosing Element is set "D" OC2 element is disabled. If a
sequence step in the Overcurrent Reclosing element is set "I"
OC2 element is enabled.
The operation of the element can be described as follows: It
becomes active when the phase current exceeds the Pickup
current value (Ip) multiplied by the Operational Cold Load
Multiplier and a timer is activated for the duration of the current
dependent Tripping time (Tt) defined by the time current
characteristic TCC curves. When this time expires and the phase
current still exceeds a dropout value , OC2 initiates a trip request
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
timer is activated which expires in accordance to the current
dependent value (Tres) after which this element becomes
passive again.
The element is blocked when the following signals are activated:
Ÿ
SD = "Source lost";
Ÿ
Hot Line On;
Ÿ
Protection Off.
It is also blocked by the AR OC element if it is executing a delayed
(D) trip sequence step.
Available TCC are presented in Table 35. OC2 settings are
described in Tables 37–41.
OC3
Phase fault high set instantaneous element provides protection
against phase high current faults with a reduced number of trips
to lockout. If there is no intention to reduce the number of trips to
lockout at high current faults, enabling this element is not
recommended. OC1 and OC2 allow reduction of tripping time to
any desired value at high currents.
The operation of the element can be described as follows: It
becomes active when the phase current exceeds the Pickup
current value (Ip) and a timer is activated for the duration of the
set Tripping time (Tt). When this time expires and the phase
current still exceeds a dropout value, OC3 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
Hot Line On;
Ÿ
Protection Off.
Oc3 element settings are described in Table 36. Only TD TCC is
available for this high set protection element.
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
double phase earth faults.
EF protection consist of six (6) individual overcurrent protection
elements providing three stages of protection for both the Direct
(Source+) and Reverse power flow (Source-) directions: EF1+,
EF1-, EF2+, EF2-, EF3+, EF3-.
EF1
Earth fault low set element EF1 is designated to provide time
delayed trips. It is enabled in any selected sequence in the
Overcurrent Reclosing element. "I" (Instantaneous) stands for
accelerated and "D" (Delayed) for delayed step of overcurrent
protection in an autoreclosing sequence.
The operation of the element can be described as follows: It
becomes active when the residual current exceeds the Pickup
current value (Ip) and a timer is activated for the duration of the
current dependent Tripping time (Tt) defined by the time current
characteristic TCC curves. When this time expires and the phase
current still exceeds a dropout value, EF1 initiates a trip request
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
timer is activated which expires in accordance to the current
dependent value (Tres) after which this element becomes
passive again.
The element is blocked when the following signals are activated:
Ÿ
SD = "Source lost";
Ÿ
Hot Line On;
Ÿ
Protection Off;
Ÿ
Earth Fault Off.
current dependent Tripping time (Tt) defined by the time current
characteristic TCC curves. When this time expires and the
residual current still exceeds a dropout value, EF2 initiates a trip
request 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 timer is activated which expires in accordance to the
current dependent value of (Tres) after which this element
becomes passive again.
The element is blocked when the following signals are activated:
Ÿ
SD = "Source lost";
Ÿ
Hot Line On;
Ÿ
Protection Off;
Ÿ
Earth Fault Off.
It is also blocked by the AR OC element if it is executing a delayed
(D) trip sequence step.
Available TCC are presented in Table 35. EF2 settings are
described in Tables 37–41.
EF3
Earth fault high set instantaneous element provides protection
against high earth current faults with a reduced number of trips
to lockout. If there is no intention to reduce the number of trips to
lockout at high current faults, enabling this element is not
recommended. EF1 and EF2 allow reduction of tripping time to
any desired value at high currents.
Available TCC are presented in Table 35. EF1 settings are
described in Tables 37–41.
The operation of the element can be described as follows: It
becomes active when the residual current exceeds the Pickup
current value (Ip) and a timer is activated for the duration of the
set Tripping time (Tt). When this time expires and the residual
current still exceeds a dropout value, EF3 initiates a trip request
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
accelerated trips. If a sequence step in the Overcurrent
Reclosing Element is set "D" EF2 element is disabled. If the
sequence step in the Overcurrent Reclosing element is set "I"
EF2 element is enabled.
Ÿ
SD = "Source lost";
Ÿ
Hot Line On;
Ÿ
Protection Off;
Ÿ
Earth Fault Off.
The operation of the element can be described as follows: It
becomes active when the residual current exceeds the Pickup
current value (Ip) and a timer is activated for the duration of the
Ef3 element settings are described in Table 36. Only TD TCC is
available for this high set protection element.
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
current
characteristic
IEC: Extremely Inverse (EI), Very Inverse (VI), Inverse (I)
TCC1
TD
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
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
Operating mode
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
Ÿ
Ÿ
SD = "Source lost";
Hot Line On;
Autoreclosing Off.
AR OC settings are described in Tables 42, 43.
Table 42. Radial line recloser AR OC element settings
Setting
Operating mode
Number of trips to lockout
Highset trips to lockout
Designation
Range
Default
Mode
Normal/Rezip/ZSC
ZSC
Mode = Normal/ZSC
1/2/3/4
4
Mode = Rezip
2/3/4
2
Nt
1/2/3/41
Nhs
Mode = Normal/ZSC
Reclosing sequence2,3
First closure mode
First reclose time, s
Seq
1
For 4 trips to lockout:
IIII/IIID/IIDD/IDDD/DDDD/DDDI/D
DII/
DIII/ IIDI/IDII/IDDI
For 3 trips to lockout:
III/IID/IDD/DDD/DDI/DII/IDI
For 2 trips to lockout:
II/ID/DD/DI
For 1 trip to lockout:
I/D
IIDD
For 4 trips to lockout: DIII
For 3 trips to lockout: DII
For 2 trips to lockout: DI
Mode = Rezip
n.a.
Mode = Normal/ZSC
Accelerate, Decelerate, Normal,
Unconditional AR4
Normal
Mode = Rezip
n.a.
Accelerate
Mode = Normal/ZSC
0.10-1800.00
1.00
Mode = Rezip
0.20-1800.00
0.20
SST mode
Tr1
Second reclose time, s
Tr2
1.00-1800.00
10.00
Third reclose time, s
Tr3
1.00-1800.00
30.00
53
Setting
Reset time, s3
TECHNICAL MANUAL
Designation
Range
Default
Mode = Normal/ZSC
1-180
1
Mode = Rezip
n.a.
0.10
Tres
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)
Table 43. Ring line recloser AR OC element settings
Setting
Operating mode
Number of trips to lockout+
Highset trips to lockout+
Designation
Range
Default
Mode
Normal/Rezip/ZSC
ZSC
Mode = Normal/ZSC
1/2/3/4
4
Mode = Rezip
2/3/4
2
Nt+
1/2/3/41
Nhs+
Mode = Normal/ZSC
Reclosing sequence+2,3
First closure mode+
First reclose time+, s
Seq+
1
For 4 trips to lockout:
IIII/IIID/IIDD/IDDD/DDDD/DDDI/D
DII/
DIII/ IIDI/IDII/IDDI
For 3 trips to lockout:
III/IID/IDD/DDD/DDI/DII/IDI
For 2 trips to lockout:
II/ID/DD/DI
For 1 trip to lockout:
I/D
IIDD
For 4 trips to lockout: DIII
For 3 trips to lockout: DII
For 2 trips to lockout: DI
Mode = Rezip
n.a.
Mode = Normal/ZSC
Accelerate, Decelerate, Normal,
Unconditional AR4
Normal
Mode = Rezip
n.a.
Accelerate
Mode = Normal/ZSC
0.10-1800.00
1.00
Mode = Rezip
0.20-1800.00
0.20
SST mode+
Tr1+
Second reclose time+, s
Tr2+
1.00-1800.00
10.00
Third reclose time+, s
Tr3+
1.00-1800.00
30.00
Reset time+, s3
Tres+
Mode = Normal/ZSC
1-180
1
Mode = Rezip
n.a.
0.10
54
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
Setting
Number of trips to lockout-
Highset trips to lockout-
Designation
Range
Mode = Normal/ZSC
1/2/3/4
4
Mode = Rezip
2/3/4
2
Nt-
1/2/3/41
Nhs-
Mode = Normal/ZSC
Reclosing sequence-2,3
First closure mode-
First reclose time-, s
Default
Seq-
1
For 4 trips to lockout:
IIII/IIID/IIDD/IDDD/DDDD/DDDI/D
DII/
DIII/ IIDI/IDII/IDDI
For 3 trips to lockout:
III/IID/IDD/DDD/DDI/DII/IDI
For 2 trips to lockout:
II/ID/DD/DI
For 1 trip to lockout:
I/D
IIDD
For 4 trips to lockout: DIII
For 3 trips to lockout: DII
For 2 trips to lockout: DI
Mode = Rezip
n.a.
Mode = Normal/ZSC
Accelerate, Decelerate, Normal,
Unconditional AR4
Normal
Mode = Rezip
n.a.
Accelerate
Mode = Normal/ZSC
0.10-1800.00
1.00
Mode = Rezip
0.20-1800.00
0.20
SST mode-
Tr1-
Second reclose time-, s
Tr2-
1.00-1800.00
10.00
Third reclose time-, s
Tr3-
1.00-1800.00
30.00
Reset time-, s3
Tres-
Mode = Normal/ZSC
1-180
1
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
Operating mode
Number of trips to lockout1
Reclose time, s
Designation
Range
Default
Mode
Normal/Rezip
Normal
Mode = Normal
1/2
1
Mode = Rezip
NA
2
Mode = Normal
0.10 - 180.00
10.00
Mode = Rezip
0.20 - 180.00
0.20
Nt
Tr
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:
SD = "Source lost";
Ÿ Hot Line Off;
Ÿ Protection Off.
Ÿ
HL settings are described in Tables 46-49.
Setting
Table 46. Radial line recloser HLOC element settings
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
Un
Non-tripping zone
At
An
ln
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
Time current
characteristic
TCC
Torque angle, °
Type = Current
TD, TEL I
n.a.
Type = Current and angle
TD
n.a.
Type = Current
n.a.
n.a.
n.a.
Type = Current and angle
0-359
1
0
TD
At
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
Time current
characteristic +
TCC +
Torque angle +, °
Type = Current
TD, TEL I
n.a.
Type = Current and angle
TD
n.a.
Type = Current
n.a.
n.a.
n.a.
Type = Current and angle
0-359
1
0
TD
At +
Operating mode -
Mode -
Disable/Alarm/Trip
n.a.
Trip
Fault identification type -
Type -
Current/Current and angle
n.a.
Current
Time current
characteristic -
TCC -
Torque angle -, °
Type = Current
TD, TEL I
n.a.
Type = Current and angle
TD
n.a.
Type = Current
n.a.
n.a.
n.a.
Type = Current and angle
0-359
1
0
TD
At -
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
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
Table 57. Ring line recloser VU element settings
Setting
Designation
Range
Resolution
Default
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
Operating mode +
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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:
SD = "Source lost";
OC/EF = "Timing up";
Ÿ SEF = "Timing up";
Ÿ VU = "Timing up";
Ÿ Protection Off.
CU settings are described in Tables 58, 59.
Ÿ
Ÿ
Table 58. Radial line recloser CU element settings
Setting
Designation
Range
Default
Mode
Enable/Disable
Disable
Iu
0.05-1.00
0.2
Minimum I2
I2min
1-80A
10
Tripping time
Tt
0.10-300.00s
10.00
Operating mode
Current unbalance
Table 59. Ring line recloser CU element
Setting
Designation
Range
Default
Mode +
Enable/Disable
Disable
Iu +
0.05-1.00
0.20
Minimum I2 +
I2min
1-80A
10
Tripping time +
Tt +
0.10-300.00s
10.00
Mode -
Enable/Disable
Disable
Iu -
0.05-1.00
0.20
Minimum I2 -
I2min
1-80A
10
Tripping time -
Tt -
0.10-300.00s
10.00
Operating mode +
Current unbalance +
Operating mode Current unbalance -
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.
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REC SERIES AUTOMATIC CIRCUIT RECLOSERS
Table 60. Radial line recloser VRC element settings
Setting
Designation
Range
Default
VU control mode
Enable/Disable
Enable
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
VUp
0.05-1.00
0.20
NVSp
0.05-1.00
0.40
Pickup overvoltage multiplier
OVp
1.00-1.30
1.20
Pickup undervoltage multiplier
UVp
0.60-1.00
0.80
Pickup underfrequency, Hz
UFp
45.00 - 49.99 for Frated=50Hz
55.00 - 59.99 for Frated=60Hz
49.50 for Frated=50Hz
59.50 for Frated=60Hz
Pickup overfrequency, Hz
OFp
50.01 - 55.00 for Frated=50Hz
60.01 - 65.00 for Frated=60Hz
50.50 for Frated=50Hz
60.50 for Frated=60Hz
Voltage unbalance mode
Neutral voltage shift mode
Voltage unbalance
Neutral voltage shift
(zero sequence voltage)
Table 61 Ring line recloser VRC element settings
Setting
Designation
Range
Default
VU control mode
Enable/Disable
Enable
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
NVSp +
0.05-1.00
0.40
Pickup overvoltage multiplier +
OVp +
1.00-1.30
1.20
Pickup undervoltage multiplier +
UVp +
0.60-1.00
0.80
Pickup underfrequency +, Hz
UFp +
45.00 - 49.99 for Frated=50Hz
55.00 - 59.99 for Frated=60Hz
49.50 for Frated=50Hz
59.50 for Frated=60Hz
Voltage unbalance mode
Neutral voltage shift mode
Neutral voltage shift +
(zero sequence voltage)
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TECHNICAL MANUAL
Setting
Designation
Range
Default
Pickup overfrequency +, Hz
OFp +
50.01 - 55.00 for Frated=50Hz
60.01 - 65.00 for Frated=60Hz
50.50 for Frated=50Hz
60.50 for Frated=60Hz
Voltage unbalance -
VUp -
0.05-1.00
0.20
NVSp -
0.05-1.00
0.40
Pickup overvoltage multiplier -
OVp -
1.00-1.30
1.20
Pickup undervoltage multiplier -
UVp -
0.60-1.00
0.80
Pickup underfrequency -, Hz
UFp -
45.00 - 49.99 for Frated=50Hz
55.00 - 59.99 for Frated=60Hz
49.50 for Frated=50Hz
59.50 for Frated=60Hz
Pickup overfrequency -, Hz
OFp -
50.01 - 55.00 for Frated=50Hz
60.01 - 65.00 for Frated=60Hz
50.50 for Frated=50Hz
60.50 for Frated=60Hz
Neutral voltage shift (zero sequence voltage)
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.
Setting
Table 62. Radial line recloser UV element settings
Designation
Range
Resolution
Default
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
60
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REC SERIES AUTOMATIC CIRCUIT RECLOSERS
Table 63. Ring line recloser UV element settings
Setting
Designation
Range
Resolution
Default
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
Operating mode +
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.
Setting
Table 64. Radial line recloser AR UV element settings
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
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
Table 67. Ring line recloser OV element settings
Setting
Designation
Range
Resolution
Default
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
Operating mode +
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.
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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
Mode
Enable/Disable
n.a.
Disable
Pickup frequency, Hz
Fp
45.00-50.00 Hz for rated frequency=50 Hz
55.00-60.00 Hz for rated frequency=60 Hz
0.01
45.00
55.00
Tripping time, s
Tt
0.10-180.00
0.01
0.10
Operating mode
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TECHNICAL MANUAL
Table 71. Ring line recloser UF element settings
Setting
Designation
Range
Resolution
Default
Mode +
Enable/Disable
n.a.
Disable
Pickup frequency +, Hz
Fp +
45.00-50.00 Hz for rated frequency=50 Hz
55.00-60.00 Hz for rated frequency=60 Hz
0.01
45.00
55.00
Tripping time +, s
Tt +
0.10-180.00
0.01
0.10
Operating mode -
Mode -
Enable/Disable
n.a.
Disable
Pickup frequency -, Hz
Fp -
45.00-50.00 Hz for rated frequency=50 Hz
55.00-60.00 Hz for rated frequency=60 Hz
0.01
45.00
55.00
Tripping time -, s
Tt -
0.10-180.00
0.01
0.10
Operating mode +
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
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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
Mode
Enable/Disable
n.a.
Disable
Pickup frequency, Hz
Fp
50.00-55.00 for rated frequency=50 Hz
60.00-65.00 for rated frequency=60 Hz
0.01
55.00
65.00
Tripping time, s
Tt
0.10-180.00
0.01
1.00
Operating mode
Table 75. Ring line recloser OF element settings
Setting
Designation
Range
Resolution
Default
Mode +
Enable/Disable
n.a.
Disable
Pickup frequency +, Hz
Fp +
50.00-55.00 for rated frequency=50 Hz
60.00-65.00 for rated frequency=60 Hz
0.01
55.00
65.00
Tripping time +, s
Tt +
0.10-180.00
0.01
1.00
Operating mode -
Mode -
Enable/Disable
n.a.
Disable
Pickup frequency -, Hz
Fp -
50.00-55.00 for rated frequency=50 Hz
60.00-65.00 for rated frequency=60 Hz
0.01
55.00
65.00
Tripping time -, s
Tt -
0.10-180.00
0.01
1.00
Operating mode +
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.
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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
Mode
Disable/Both/Only+/Only-
Disable
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
Operating mode
Restoration disarm mode
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.
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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.
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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
Enable/Disable
Disable
Hot+ / Hot- allowed
Enable/Disable
Disable
Dead- / Dead+ allowed
Hot+ / Hot- allowed
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.
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REC SERIES AUTOMATIC CIRCUIT RECLOSERS
Table 84. Radial line recloser FL settings
Setting
Designation
Range
Default
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
Operating mode
Table 85. Ring line recloser FL settings
Setting
Designation
Range
Default
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
Operating mode
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.
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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
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
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
Angle between +U1 and -U1, °
Positive sequence active power, kW
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
Electric TELARM Dispatcher® for remote control and
supervision. TELARM Dispatcher can be installed on one or
multiple PCs with full or limited access to all or some of the
reclosers. Connection via Internet or Local Area Network (LAN)
is available. Physical connection of an RC5_3 to the Internet can
be done via wireless connection - GPRS modem (see Figure 50)
or wired connection - Ethernet port (see Figure 51).
Indication and control are provided through the following
interfaces:
•
Personal Computer Interface (PCI);
•
Telecommunication Interface (TCI);
•
Digital Input/Output Interface (IOI);
•
TELARM dispatcher Interface (TDI).
In the “Local“ mode, the recloser is controlled via the MMI or the
Personal Computer Interface (PCI). In the “Remote“ mode the
recloser is controlled via TCI, TDI or IOI. Indication is provided via
all interfaces in both modes.
6.3.2 Personal Computer Interface (PCI)
The PCI provides Indication and control via a PC (with installed
TELARM software). The connection is established via the USB
port located on the front the Control Panel Module (CPM), via
RS-232 on the RCM or via a Bluetooth module (BTM).
The PCI provides the following functionality:
•
Data upload/download;
•
Firmware upload.
Uploading/Downloading data
Data can be uploaded/downloaded via the PC when the
communication link is established. The communication link is
password protected. The password is configured via the PCI at
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 InputOutput Module (IOM). The IOM provides 12 digital inputs and 12
digital outputs for SCADA control and indication. Each
input/output function is individually customizable.
Both the RC5_3 recloser control(s) and PC(s) with TELARM
software can connect to RC Internet Server software (RCIS). This
software provides communication between a PC and multiple
RC5_3. RCIS itself is a Windows® service. Connection between
TELARM software and RCIS is protected with SSL encryption.
Individual certificates are issued for each PC with TELARM
which will connect to RCIS.
Benefits of using a TDI are the following:
•
Remote control is available even without a SCADA system in
place (or as backup for existing SCADA system);
•
SCADA is usually available in dispatcher centers only. With
TDI regional operators can check protection devices
remotely without any support request form the Dispatcher
Center;
•
Potential problems can be identified and eliminated faster
because all logs from protection device, including Event log,
detailed Fault profile and fault oscillography are available
remotely and can be analyzed by an operator immediately
after protection device has operated.
76
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
RC Internet server
RC-05
GPRS
Modem
Internet
TCP/IP
software
driver
Rcremote.dll
TELARM
CommChannels
CommChannels
CommChannels
CommChannels
TCP/IP
Server
Internet
GPRS
Provider
RC-05
Rcremote.dll
GPRS
Modem
TELARM
Fig.50. Structure of the system with wireless connection
RC Internet server
Rcremote.dll
RC-05
LAN
Internet
TCP/IP
software
driver
TELARM
CommChannels
CommChannels
CommChannels
CommChannels
TCP/IP
Server
Internet
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
7. LCD Contrast
1
8. Navigation
9. Enter
10. Escape
10
3
Fast Key Pushbuttons
11. Malfunction Log
8
12.
Event Log
9
7
13. Protection ON/OFF
14. Earth Fault ON/OFF
16
13
15. Sensitive Earth Fault ON/OFF
16. Reclosing ON/OFF
17. Hot Line ON/OFF
17
14
18. Backfeed Restoration ON/OFF
19. Active (Protection) Group
18
15
2
19
Fig.52. Control Panel Module (CPM)
1
2
3
4
5
6
11
7
8
9
10
LCD Display
1. TEL Logo
2. Title string
3. Label of Indication data, Control data or Settings
4. Path
5. Context icon
6. Title Bar
7. Menu Bar
8. Status Bar
9. Date and Time
10. Parameter values of Indication data, Control data or
Settings
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.
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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
available only using a PC via the PCI or TDI interfaces:
•
Fault profile (FP);
•
Load profile (LP);
Pressing the “Event Log” button provides transition to this
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
date of the event is displayed on the screen.
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
Fault dropout
Maximum values of Ia, Ib, Ic, In, I2, U1+, U2+, minimum values of U1+, F+
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
open to reclose
Maximum value of Ia, Ib, Ic since fault appearance
OC1a/OC1b/OC1c/OC2a/OC2b/OC2c/OC3a/OC3b/OC3c
open to lockout
Maximum value of Ia, Ib, Ic since fault appearance; Fault distance, X1_fault
(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
SEF open to lockout
Maximum value of In since fault appearance; Fault distance, X0_fault (in
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
Power quality restoration
Maximum and minimum value of U1+, U1-, minimum value of F+, F-,
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
Oscillography sample rate, Hz
Applicable range
Factory default
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
Scroll bar
M – means malfunction
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
Event
Condition of event appearance
Reference element
for related signals
Watchdog restart
System watchdog initiated restart of the microcontroller
NA
RCM fault¹
RCM recovery
Activation of «RCM fault» signal
Deactivation of «RCM fault» signal
IDC
Shutdown
Power restart
Activation of «Shutdown» signal
Deactivation of «Shutdown» signal
PSE
Low battery found
Battery restoration
Activation of «Battery low» signal
Deactivation of «Battery low» signal
PSE
Loss of AC supply
Restoration of AC supply
Activation of «Loss of AC supply» signal
Deactivation of «Loss of AC supply» signal
PSE
RTU short circuit
RTU reconnection
Activation of «RTU short circuit» signal
Deactivation of «RTU short circuit» signal
PSE
TDI modem disconnected
TDI reconnection
Activation of «TDI modem disconnected » signal
Deactivation of « TDI modem disconnected » signal
PSE
Battery fault
Battery recovery
Activation of «Battery fault» signal
Deactivation of «Battery fault» signal
PSE
Battery sensor fault
Battery sensor recovery
Activation of «Battery sensor fault» signal
Deactivation of «Battery sensor fault» signal
PSE
Excessive trip time
Excessive close time
Activation of «Excessive trip time» signal
Activation of «Excessive close time» signal
DRVE
Driver fault
Driver recovery
Activation of «Driver fault» signal
Deactivation of «Driver fault» signal
DRVE
OSM coil isolated
OSM coil short circuit
OSM coil recovery
Activation of «OSM coil isolated» signal
Activation of «OSM coil short circuit» signal
Deactivation of «OSM coil isolated» and «OSM coil short circuit» signals
DRVE
Driver not ready
Driver ready
Activation of «Driver not ready» signal
Deactivation of «Driver not ready» signal
DRVE
IOM fault
IOM recovery
Activation of «IOM fault» signal
Deactivation of «IOM fault» signal
IOI
IOM disconnected
IOM reconnection
Activation of «IOM disconnected» signal
Deactivation of «IOM disconnected» signal
IOI
BTM disconnected
BTM reconnection
Activation of «BTM disconnected» signal
Deactivation of «BTM disconnected» signal
PCI
BTM fault
BTM recovery
Activation of «BTM fault» signal
Deactivation of «BTM fault» signal
PCI
BTM initialization error
BTM initialized
Activation of «BTM initialization error» signal
Deactivation of «BTM initialization error» signal
PCI
RTU disconnected
RTU reconnection
Activation of «RTU disconnected» signal
Deactivation of «RTU disconnected» signal
TCI
RTU fault
RTU recovery
Activation of «RTU fault» signal
Deactivation of «RTU fault» signal
TCI
84
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
RTU initialization error
RTU initialized
Activation of «RTU initialization error» signal
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.
GPRS connection with GPRS provider or local network connection to server PC is TDI
successfully established
TDI provider connected
TCI
TDI disconnected
TDI connected
Connection with RC Internet server is not established or has been interrupted
Connection with RC Internet server is successfully established
TDI
TDI modem fault
TDI modem recovery
GPRS modem fault is detected
GPRS modem fault is eliminated
TDI
TDI modem initialization error "TDI modem initialization error" setting value became equal "1"
TDI modem initialized
“TDI modem initialization error" setting value became equal "0"
TDI
TDI network adapter
disconnected
TDI network adapter
connected
“TDI network adapter disconnected” signal value became equal "1"
“TDI network adapter connected” signal value became equal "0"
TDI
TDI server not responded
RC Internet Server does not respond
TDI
RTC reset
RTC adjusted
Activation of «RTC reset» signal
Deactivation of «RTC reset» signal
RTC
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
within time interval between current and previous records
Source detector existed in «Source +» state with OSM being
closed, and for some time OSM has been open.
6.5.1.4. Fault profile (FP)
Ÿ
Position of the OSM.
The Fault profile stores up to 10000 readings of data related to
protection activity. Each reading is time stamped with an
accuracy of 1ms. The time interval between readings equals one
cycle of the power frequency. The fault profile is arranged as a
ring buffer.
6.5.1.5. Change messages (CM)
The fault profile is filled with relevant data when protection
element activated.
The following data are presented in the Fault profile:
Ÿ
Phase currents;
Ÿ
Residual current;
Ÿ
Positive sequence current and voltage;
Ÿ
Negative sequence current and voltage;
Ÿ
Frequency;
Ÿ
Active Protection;
Ÿ
Angle between Un and In;
This log records 100 records associated with the control
instructions issued locally or via telecommunications. Each
event is time stamped with an accuracy of 1ms. Change
messages are arranged as a ring buffer.
Each message is accompanied with additional information that
always includes control source instruction and (for some
messages) old and new values of the parameter being subject
for change.
Table 94 represents a list of applicable message types (XXX
means the name of setting or element); several settings of one
element can be changed, that will result in the appearance of
several Change messages, one for each changed setting.
Table 94. Change messages log
Change Message
Applicable source of
Control Instructions
Reference (where to find description of relevant data
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
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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
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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
PCI session completed
Deactivation of «PCI active» signal
Number of transferred/received bytes and frames
during connection session
TCI session started
Activation of «TCI active» signal
NA
TCI session completed
Deactivation of «TCI active» signal
Number of transferred/received bytes and frames
during connection session
TDI session started
Activation of «TDI active» signal
Via GPRS/LAN
TDI session completed
Deactivation of «TDI active» signal
Number of transferred/received bytes and frames
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
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TCI UR initiated
TCI UR transfer is initiated
NA
TCI UR confirmed
TCI UR is confirmed by Master
NA
TCI UR failed
Attempt to send TCI UR was
unsuccessful (Cancellation failed or
Protocol error or TCP/IP error)
NA
PCI restart
PCI protocol restarted
NA
TCI restart
TCI protocol restarted
NA
MMI refusal of command
execution
There are no conditions for execution of
MMI command
Reason, Command name
IOI refusal of command
execution
There are no conditions for execution of
IOI command
Reason, Command name
PCI refusal of command
execution
There are no conditions for execution of
PCI command
Reason, Command name
TCI refusal of command
execution
There are no conditions for execution of
TCI command
Reason, Command name
TDI refusal of command
execution
There are no conditions for execution of
TDI command
Reason, Command name
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
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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.
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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
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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
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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)
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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)
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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)
7.1.8 Installation
Installation of the recloser is described in section “9. Installation guide”.
Fig.66. RC5_3 installation (U-clamps)
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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
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
Dimensions, mm
Applicable standard
Note:
1
RecComp_VT25_1
Primary and secondary nominal voltage must be specified in the order
28
34
342 x 370 x 327
373 x 432 x 327
IEC 60044-2
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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
Type
RecComp_SA25_SAV
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
voltage), kV2
12(10.2)
Rated lightning impulse withstand voltage, kV
95
15(12.7)
18(15.3)
24(20)
110
Minimum operation temperature, °C
-50
Maximum operation temperature, °C
+55
Weight, kg
Connection of primary circuit (interface)
Applicable standard
Note:
1
Class 2 available upon special request
2
Rated voltage must be specified in the order
1.7
2.1
27(22.5)
30(25)
125
170
2.5
3.1
M12x35
IEC 60099-4
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TECHNICAL MANUAL
8.3 Interface Test Set (ITS)
8.3.1 Overview
Interface test set EA_ITS_1 (ITS) is a simulator of combined
current and voltage sensors of the OSM and intended for
secondary and primary current and voltage injection. Together
with three-phase injection test set (not included with the
delivery) the ITS is capable to simulate the following types of
faults:
•
Three phase short circuit;
•
Phase to phase short circuit;
•
Earth fault;
•
Upstream broken wire;
•
Low source voltage;
•
Loss of supply;
•
Loop automation functionality (with two secondary injection
test sets).
The ITS is enclosed in a portable, impact resistant plastic case
providing IP40 protection (see Figure 69, Figure 70 and Figure
71).
The ITS has four current channels and six voltage channels for
simulation output signals of the combined current and voltage
sensors. Each current channel has a current sensor (Rogowski
coil) and each voltage channel has a step-down voltage
transformer. Internal components are protected by thermal
circuit breakers and overvoltage suppressors.
For more information on the ITS technical and application
details refer to the relevant ITS technical manual. Refer to
Appendix 3 to see the ITS dimensional drawing.
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
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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
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TECHNICAL MANUAL
8.3.2 Technical parameters
Table 106. ITS technical parameters
Parameter
Frequency, Hz
Power frequency withstand test voltage (50 or 60 Hz, 1 min)
Current channels Number channels of the current simulation Input current (secondary injected
current), not more than, A
Input impedance, Ohm
Short-time thermal current, not more than, A, 1s
Rated value
50/60
500
4
5.8
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
Overall dimensions with closed case cover, mm
9.2
406x330x174
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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
3
Metal parts
Absence of mechanical damages, scratches and corrosion on painted surfaces and
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.
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TECHNICAL MANUAL
Lifting provisions
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
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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
the hook. The hook with the nut should be placed at the mounting
seat.
Cable lugs applicable for chosen connection wires and
M12 bolt;
Connection clamps (waterproof if insulated connection
wires are used).
•
Hydraulic cable terminal lug clamping tool up to 240mm2;
•
Alcohol for insulation cleaning;
•
Crane or other lift for OSM and RC5_3 lifting.
Check the correct orientation of the hook (Figure 76). Then,
holding the hook in this position tighten the M8 nut to a torque of
10Nm as shown below.
Hook correct orientation
Fig.76. Manual hook installa on
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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
Steel stainless strip
Figure
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)
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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).
d
³µ̈
©
¯§
?µ
¥
®­
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
Fig.82. Connection of conductor up to 90 mm2
Spring lock
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
AC2 Connector
AC1 Connector
AC1 Earthing Jumper
AC2 Earthing Jumper
Pins 1-9
Pins 10-18
L
N
AC1
L
N
E
Outlet
Fig.86. PSFM terminals
L
N
AC2
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
screw to remove the protective cover
2. Connect the 32 pin female connector to the RC5_3 and secure
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.
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TECHNICAL MANUAL
10. COMMISSIONING GUIDE
10.1. General information
All Tavrida Electric outdoor switching modules meet IEEE
C37.60 and IEC 60271-111 requirements and are tested before
shipment.
This section provides recommendations for commissioning
tests described in sections 10.1.1 to 10.1.5 after installation of
the recloser.
If the main contact resistance test, primary and/or secondary
injection tests or power frequency voltage test are required prior
installation refer to sections 10.1.6 to 10.1.10.
10.1.1. Power supply testing
Switch on the battery switch and AC miniature circuit breakers
taking into account single or double side power supply.
In MMI Test Mode pushbuttons functionality can be checked by
pressing it. Name of the pressed pushbutton is displayed on
CPM display as follows:
MMI Test Mode
PROT pushbutton was pressed
Press On/Off to exit Test Mode
Exit the MMI Test Mode by pressing "Hold to Test" (“On/Off”)
pushbutton.
LCD pixels test can be done by pressing and holding "Hold to
Test" (“On/Off”) for 5 seconds. In this mode all LCD pixels are
activated.
Switch on control panel by pressing the CPM “On/Off”
pushbutton.
Complete the test by pressing “On/Off” pushbutton or switching
off CPM.
10.1.3. Checking measurement coefficients
NOTE! Up to 60 s might be required for the RC5_3
circuits energizing.
Check that the current and voltage measurement coefficients in
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
both are incorrect connect to the RC via USB, Bluetooth or TDI
and synchronize date and time on your computer with the RTC of
the RC using TELARM. Date and time is visible at the MMI
screen.
Measurement coefficients and Umbilical control cable
indication:
Synchronize date and time procedure:
TELARM->On-line->Synchronize date and time
Date and time setup via MMI:
CPM Main Menu -> Control Data -> Set Date and time
Select “PSE Power supply” title in the screen and press “Enter”.
“PSE indication” menu shall appear. Check presence of both AC
input voltages indication and the residual battery capacity
indication. If an abnormal state is indicated connect the proper
AC supply or replace the battery accordingly.
Make sure that residual battery lifetime is set to 100%.
Residual battery lifetime setup via TELARM:
TELARM->On-line->Set counters->Residual battery lifetime
Residual battery lifetime setup via MMI:
CPM Main Menu -> Control Data -> Lifetime counters->
Residual battery lifetime…
10.1.2. CPM testing
CPM testing includes pushbutton functionality testing in MMI
Test mode and LCD pixel testing.
MMI test mode is activated by pressing and holding on 2-5
seconds of "Hold to Test" (“On/Off”) pushbutton of CPM. In this
case MMI Test Mode is applied in which all LEDs blink and MMI
Test Mode menu appears on CPM display:
MMI Test Mode
Press any pushbutton for test
Press On/Off to exit Test Mode
CPM - > Main menu -> Settings -> System -> Measurement
To correct coefficients and Umbilical cable length, connect to
the RC via TELARM:
TELARM -> On-line -> Rec -> System settings -> System -> ME
settings
NOTE!
Incorrect measurement coefficients and
incorrect Umbilical cable length may result in
performance outside of specified accuracy for voltage
and current measurement.
10.1.4. Recloser operation tests
Test procedure:
1. Connect the Umbilical control cable to the OSM.
2. Switch on the control panel by pressing the CPM “On/Off”
pushbutton and ensure that the position LED corresponds to
the mechanical position indicator of the OSM.
3. Perform several Close-Open operations using MMI
pushbuttons. Ensure that reaction on command does not
exceed 2 seconds and OSM position is correctly reflected by
“Closed” and “Open” LEDs.
4. Use the manual trip hook to initiate a mechanical trip
operation and ensure the mechanism is fully withdrawn.
5. View the “Indication data” on the CPM, select the
“Identification data conditioner” and then select
“Malfunction log” and confirm that an “OSM Coil Isolated”
message indicates that the OSM is unable to be closed.
Confirm that pressing the close button does not cause the
OSM to close. Press the ESC key to return back to the “Main
menu” view.
6. Push the manual trip hook back into the operating position
and confirm that pressing the close pushbutton causes the
OSM to close.
110
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
7. After powering the main line ensure that the OSM is in the
CLOSED position. Select “Measurement” from the
“Indication data” page. Check that phase current, earth
currents, phase-to-earth and phase-to-phase voltages are
within the accuracy limit specified in the technical data.
10.1.5. Checking phase sequences
10.1.7. Primary current injection test
After powering the main line it is recommended to check the
correct phase sequence. The negative sequence voltage (U2)
should be less than 1kV.
2. Inject rated primary current, one phase at a time.
Negative voltage sequence indication:
CPM -> Main menu -> Indication data -> Measurement -> U2
If the negative sequence voltage is observed, it can be fixed by
changing the software setting.
Changing phase sequence:
TELARM -> On-line -> Rec -> System settings -> System ->
Configuration -> Wires to terminal connection
NOTE! Incorrect phase sequence may result in incorrect
operation of relay protection elements.
The test should be done with the primary current injection test
set.
Test procedure:
1. Connect the primary current injection test set to the OSM.
3. Select “Indication data”, “ME measurements” from the CPM.
Check that phase and earth current are correct in each case
and within the accuracy limit specified in the technical data.
WARNING! The OSM main contacts must be in the
CLOSED position. Injected primary current must be below
the minimum tripping setting or the overcurrent
protection must be disabled prior the test. All electrical
equipment must be earthed. Failure to comply may result
in death,severe personal injury or equipment damage.
10.1.8. Primary voltage injection test
The test should be done with the primary voltage injection test
set.
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:
Apply test current to the OSM terminals. The current during the
measurement shall have any convenient value between 50A and
the rated normal current.
Main contact resistance must not exceed the limits specified in
the technical specification:
·
≤ 85µ
for 15 kV Rec series automatic circuit recloser;
·
≤ 95µ
for 27 kV Rec series automatic circuit recloser.
Current
source
R
3. Select “Indication data”, “ME measurements” from the CPM.
Check that phase-to-earth and phase-to-phase voltages are
correct and within the accuracy limit specified in the
technical data.
WARNING! The OSM main contacts must be in the
CLOSED position. Injected primary voltage must be below
the minimum tripping setting or the voltage protection
must be disabled prior the test. All electrical equipment
must be earthed. Failure to comply may result in death,
severe personal injury or equipment damage.
10.1.9. Secondary injection test with ITS
Auxiliary bar
The test should be done with the secondary current and voltage
injection test set (e.g. Omicron CMC 356 or similar) together with
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.
Fig.87. Main contact resistance test
WARNING! The OSM main contacts must be in the
CLOSED position. The RC must be switched off during the
test. All electrical equipment must be earthed. Failure to
comply may result in death,severe personal injury or
equipment damage.
4. Inject secondary current and voltage which are below the
minimum tripping settings.
5. Select “Indication data”, “ME measurements” from the CPM.
Check that phase currents, earth current, phase-to-earth
and phase-to-phase voltages are correct and within the
accuracy limit specified in the technical data.
6. Set the current or voltage above the minimum tripping
setting and wait until the corresponding protection trips.
111
TECHNICAL MANUAL
7. Check relevant data (tripping time, value of tripping current
or voltage) and compare it with the protection settings.
WARNING! All electrical equipment must be earthed.
Failure to comply may result in death, severe personal
injury or equipment damage.
ITS
Test
equipment VA
Ua
Ub
Uc
Ur
Us
Ut
VB
VC
VR
VS
VT
I1
I2
I3
I4
RC5_3
RecUnit_Umbilical_0
Ia
Ib
Ic
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.
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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
1
RCM fault
Internal fault of recloser control
N/A
module
Replace the RCM
2
Driver fault
Internal fault of driver module
N/A
Replace the RCM
3
IOM fault
Internal fault of input output
module
N/A
Replace the IOM
4
5
6
7
IOM
disconnected
IOM mode is enabled but the
Verify that the IOM is properly
IOM is not physically installed or
installed in the RCM slot
not properly connected to RCM
BTM
initialization
error
Recommended action
Provide reliable connection of the IOM
Disable the IOM mode if it is not used
RCM malfunction
If the signal does not disappear the
Replace the RCM
problem is in the RCM
Internal fault of Bluetooth
module
N/A
Replace the BTM
RCM malfunction
Check if the reading in the
malfunction log “RCM fault” is
present
Replace the RCM
BTM mode is enabled but the
USB cable connecting the
Bluetooth module and the RCM
is unplugged or damaged
1) Provide reliable connection of the
1) Disconnect the USB cable from
Bluetooth module
the RCM and the Bluetooth module
2) Replace the USB cable
2) Check the cable for any visual
NOTE! Disable the BTM mode if the
damage
Bluetooth is not used
RCM malfunction
Check if the reading in the
malfunction log “RCM fault” is
present
Replace the RCM
Internal fault of Bluetooth
module
N/A
Replace the BTM
RCM malfunction
Check if the reading in the
malfunction log “RCM fault” is
present
Replace the RCM
BTM fault
BTM
disconnected
Malfunction tracing procedure
115
№
8
9
10
11
Signal
RTU short
circuit
TECHNICAL MANUAL
Possible reason
Malfunction tracing procedure
Recommended action
Internal RTU short circuit
1) Disconnect the RTU from the
power supply
2) Turn the RTU supply on via the
CPM
If signal disappears short circuit is
inside the RTU
Replace the RTU
Short circuit in the wires
connecting RTU and RCM
Disconnect the plug “10”
If the signal disappears the short
circuit is in the wiring between the
RTU and RCM
Replace the wiring assembly
RCM malfunction
Check if the reading in the
malfunction log “RCM fault” is
present
Replace the RCM
RTU mode is enabled but the
cable connecting the RTU and
the RCM is unplugged or
damaged
1) Disconnect the cable from the
RTU and the RCM
2) Check the cable for any visual
damage
1) Provide reliable connection of the
RTU and the RCM,
2) Replace the cable
NOTE! Disable the RTU mode if it is
not used
RCM malfunction
Check if the reading in the
malfunction log “RCM fault” is
present
Replace the RCM
Incorrect DCE configuration.
DCE did not answer “OK” on
init string.
1) Ensure that all settings in the DCE
and the RC are consistent. Perform all
dialing procedures manually, using a
1) Check the DCE and RC (TCI)
PC with a standard terminal software
settings
recommended by the DCE
2) Disconnect the DCE-DTE cable
3) Check the DCE-DTE cable for any manufacturer
2) Provide reliable connection of the
visual damage
DCE-DTE cable
3) Replace the DCE-DTE cable
AC miniature circuit breaker is
switched off
Check that the AC miniature circuit
breaker is switched on
Switch on the AC miniature circuit
breaker
Distribution line is
disconnected or damaged from
the source side
Check the phase voltages on CPM
If the phase voltages on CPM are
not normal then distribution line is
disconnected or damaged from the
source side
Contact the responsible maintenance
department
Auxiliary transformer
malfunction
Check the voltage at the PSFM
power supply input terminals (refer
to section “9.7. Connecting the RC Check the auxiliary transformer and
to auxiliary supply”)
its wiring, fix the malfunctioning
If the voltage is less than 85 V it is a component
malfunction of the auxiliary
transformer
PSFM malfunction
If the voltage is between 85-265 V,
check the voltage at the RCM input
(plug “14”). If the voltage is less
than 85 V, the
malfunction is in the PSFM
RTU
disconnected
RTU
initialization
error
Loss of AC
supply
Replace the PSFM
116
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
№
Signal
Possible reason
Malfunction tracing procedure
Recommended action
11
Loss of AC
supply
RCM malfunction
In case the voltage at the RCM
inputs is between 85-265 V it is an
RCM malfunction
Replace the RCM
Low battery
found
AC auxiliary power supply was
absent for a long time and the
signal was generated when the
battery residual capacity
dropped below a preset
shutdown level
Refer to “Loss of AC supply” section of
this troubleshooting guide to establish
Check if the reading in the
AC auxiliary power supply
malfunction log “Loss of AC supply” NOTE! The signal will disappear when
is present
the battery capacity is above the
shutdown level
The battery was disconnected
manually or by switching off the
battery switch
1) Ensure that battery switch is ON
2) Ensure that the battery is
properly connected to the RCM:
Plug “13” wires 1(+) and 2(-)
3) Check the wiring connection to
the battery terminals:
“+” terminal = wire with “+” mark
“-” terminal = battery sensor
1) Turn the battery switch to ON
2) Provide reliable connection of the
wiring
Wiring malfunction
1) Disconnect the wiring from the
RCM:
Plug “13” wires 1(+) and 2(-)
2) Disconnect the wiring from the
battery:
Wires marked “+” and “-”
3) Check that wiring for any visual
damage
NOTE! Reconnect the wiring
properly after the tests are done
Replace the wiring assembly
Internal fault of the battery
If none of the above described
reasons were confirmed it is likely
to be an internal battery fault
Replace the battery
Battery sensor wiring is not
properly connected to the RCM
Check the battery sensor wiring
connection to the RCM:
Plug “13”, wires 3,4,5,6,7,8
Provide reliable connection of the
battery sensor
Failure of battery
temperature sensor
If none of the above described
reasons were confirmed it is likely
a battery temperature sensor fault
Replace the wiring assembly
Check if the record in malfunction
log “Driver is not ready” is present
Refer to “Driver not ready” section of
this troubleshooting guide
OSM coil short circuit
Check if the reading in the
malfunction log “OSM coil short
circuit” is present
Refer to “OSM coil short circuit”
section of this troubleshooting guide
OSM coil open circuit
Check if the reading in malfunction
log “OSM coil open circuit” is
present
Refer to “OSM coil open circuit”
section of this troubleshooting guide
12
13
14
15
Battery fault
Battery
sensor
fault
Excessive trip Driver is not ready
time
117
№
15
16
Signal
TECHNICAL MANUAL
Possible reason
Malfunction tracing procedure
Recommended action
RCM malfunction
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
plug “8”
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
Replace the RCM
Open circuit in Control Cable
If RCM replacement doesn't help:
1) Switch off the RC and the battery
2) Disconnect “8” plug from the
RCM
3) Disconnect the control cable
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
Replace the Control cable
control
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
OSM malfunction
If none of the above described
actions helped it is an OSM
malfunction
Replace the OSM
Driver is not ready
Check if the record in malfunction
log “Driver is not ready” is present
Refer to “Driver not ready” section of
this troubleshooting guide
RCM malfunction
1) Switch off the RC and battery
2) Disconnect plug “8“ from the
RCM
The indication of main contact
position should change to “Close”
If the indication doesn't change to
“Close” the malfunction is in the
RCM
Replace the RCM
Excessive trip
time
Excessive
close
time
118
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
№
16
17
Signal
Excessive
close
time
Possible reason
Malfunction tracing procedure
Short circuit in the wiring
connecting the RCM with
control cable
1) Switch off the RC and the battery
2) Disconnect the control cable
from the RC.
3) Switch on the RC and battery
The indication of main contact
Replace the RC
position should change to “Close”
If the indication doesn't change to
“Close” the malfunction is in the
wiring connecting the RCM with
control cable
Open circuit in Control
Cable
1) Switch off the RC and the battery
2) Connect the control cable to the
RC
3) Disconnect the control cable
from the OSM
4) Switch on the RC and the battery
Replace the Control 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
OSM malfunction
If none of the above described
actions helped it is an OSM
malfunction
Replace the OSM
The OSM is switched off
manually
Check if the OSM is switched off
manually
Push the manual trip hook back into
the operating position and confirm
that pressing the close pushbutton
causes the OSM to close
Wiring connecting drivers of the
RCM and control cable is not
properly connected
Check that the wiring connecting
the drivers of the RCM (plug “8”)
and control cable is properly
connected
Connect the wiring properly
RCM malfunction
1) Switch off the RC and the
battery and wait for 2 minutes
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
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
OSM coil
isolated
Recommended action
119
№
Signal
TECHNICAL MANUAL
Possible reason
Wiring assembly in the RC is
open circuited
Control cable is not connected
properly
17
OSM coil
isolated
Control cable malfunction
18
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
change to “OSM coil short
Replace the wiring assembly
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
1) Connect the Control cable properly
2) Check that pins of the Control
cable and HARTING connectors are 2) Replace the Control cable
visually not damaged from the RC
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
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
OSM malfunction
If none of the above described
actions helped it is an OSM
malfunction
Replace the OSM
Wiring connecting drivers of the
RCM and control cable is not
properly connected
Check that the wiring connecting
the drivers of the RCM (plug “8”)
and control cable is properly
connected
Connect the wiring properly
RCM malfunction
1) Switch off the battery and wait
for 2 minutes
2) Open circuit driver inputs of the
RCM Plug “8” inputs 1 and 2
3) Switch on the RC and battery
The malfunction readings should
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
Replace the RCM
OSM coil
short
circuit
120
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
№
Signal
Possible reason
Wiring assembly connecting the
RCM and Control cable is short
circuited
18
19
20
OSM coil
short
circuit
Driver not
ready
TDI modem
fault
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
change to “OSM coil open
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
Control cable is not connected
properly
1) Check that the Control cable is
connected properly
2) Check that pins of the Control
1) Connect the Control cable properly
cable and HARTING connectors are 2) Replace the Control cable
visually not damaged from the RC
and OSM side
Control cable malfunction
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
Replace the Control cable
and/or auxiliary supply switch
The malfunction readings should
change to “OSM coil open
circuited”
If the reading doesn't change the
malfunction is in the Control cable
OSM malfunction
If none of the above described
actions helped it is an OSM
malfunction
Replace the OSM
Switching capacitors are still
charging
Wait for 60 seconds
If the signal disappears this
warning is not associated with any
malfunction
Not required
OSM coil short circuit or OSM
coil isolated
Check if the record in malfunction
log “OSM coil short circuit” or
“OSM coil isolated” are present
Refer to “OSM coil short circuit” or
“OSM coil isolated“ section of this
troubleshooting guide
RCM malfunction
Check if the reading in the
malfunction log “RCM fault” is
present
Replace the RCM
Cable connecting the RCM and
the DCE is not properly
connected or damaged
1) Disconnect the cable from the
RCM and the DCE
2) Check the DCE-DTE cable for
any visual damage
1) Provide reliable connection of the
RCM and the DCE
2) Replace the DCE-DTE cable
121
TECHNICAL MANUAL
№
Signal
Possible reason
Malfunction tracing procedure
Recommended action
20
TDI modem
fault
Iinternal fault of the DCE
If the above described action did
not help it is an internal
malfunction of the DCE
Replace the DCE
TDI modem
initialization
error
Incorrect DCE configuration.
DCE did not answer “OK” on
init string.
1) Ensure that all settings in the DCE
and the RC are consistent. Perform all
dialing procedures manually, using a
1) Check the DCE and RC (TDI)
PC with a standard terminal software
settings
recommended by the DCE
2) Disconnect the DCE-DTE cable
3) Check the DCE-DTE cable for any manufacturer
2) Provide reliable connection of the
visual damage
DCE-DTE cable
3) Replace the DCE-DTE cable
22
TDI modem
disconnected
TDI mode is enabled but the
cable connecting the DCE and
the RCM is unplugged or
damaged
1) Disconnect the cable from the
DCE and the RCM
2) Check the DCE-DTE cable for
any visual damage
23
The RC does not receive echoreplies from RC Internet Server Wait for 10 minutes before the RC
(normally followed by reading in tries to establish connection with
malfunction log “TDI provider
the RC Internet Server
TDI server not disconnected”)
responded
Check if the reading in malfunction
log “TDI provider disconnected” is
TDI provider disconnected
present
21
24
25
TDI provider
disconnected
TDI
disconnected
1) Provide reliable connection of the
RTU and the RCM,
2) Replace the DCE-DTE cable
NOTE! Disable the TDI mode if it is not
used
If connection has not been restored,
make sure that the RC Internet Server
service is running on PC
Refer to “TDI provider disconnected”
section of this troubleshooting guide
DCE is unable to access the
Internet due to poor GPRS
network coverage or incorrect
Internet Service Provider
settings (for example APN
name)
1) Check the GPRS network
coverage
2) Check the Internet Service
Provider settings
1) Ensure that GPRS coverage is
present
2) Enter the correct settings
GPRS service is blocked the
Internet Service Provider
Contact the Internet Service
Provider for clarification of status
Ensure that GPRS service is provided
by using a mobile phone fitted with
this SIM card
TDI modem initialization
Check if the reading in malfunction Refer to “TDI modem initialization
log “TDI modem initialization error” error” section of this troubleshooting
is present
guide
TDI modem fault
Check if the reading in malfunction
log “TDI modem fault” is present
Refer to “TDI modem fault” section of
this troubleshooting guide
Connection with the RC Internet
server cannot be established or
has been temporarily
interrupted
1) Check the TDI settings (Internet
IP address and port)
2) Check that the RC Internet
Server is running and connected to
the Internet
3) Check that the RC Internet
Server has a static IP address
which accessible from the Public
Internet
1) Enter correct TDI settings
2) Restart the RC Internet Server
3) Ping the external RC Internet
Server IP adress to check if it's
reachable from the Public Internet
122
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
№
25
26
27
Signal
TDI
disconnected
TDI network
adapter
disconnected
RTC resetted
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
TDI modem fault
Check if the reading in malfunction
log “TDI modem fault” is present
Refer to “TDI modem fault“ section of
this troubleshooting guide
TDI provider disconnected
Check if the reading in malfunction
log “TDI provider disconnected” is
present
Refer to “TDI provider disconnected “
section of this troubleshooting guide
The TDI network adapter was
disconnected manually
Verify that the TDI network adapter Provide reliable connection of the TDI
is properly installed in the RCM
network adapter
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
supply
N/A
Synchronize the date and time via
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
№
1
2
Problem
PC connection
problems
CPM
malfunction
Possible reason
Malfunction tracing procedure
Recommended action
RCM is shutdown
Check that AC miniature circuit
breakers are ON
Check the voltage on power supply
inputs of the RCM
The voltage shall be in the range
85-265 V
In case the voltage is absent refer to
section “Loss of AC supply” in Table
104
Improper connection
to the RC via PCI
Check cable connection
Connect the cable properly
RCM malfunction
Check if the reading in the
malfunction log "RCM fault" is
present
Replace the RCM
MMI is low contrast
1) Check if LEDs on the CPM are lit
2) Check if the screen lights but no
readings are visible
3) Push the button “Contrast”
several times till the readings
become clearly visible
Adjust the brightness
The CPM mode is disabled via
PCI
1) Download System settings from
the RCM
2) Check the CPM mode
(“Configuration” section)
The CPM mode is disabled if the
check box is not ticked
Activate CPM mode via PCI
Wiring connecting the CPM and
the RCM is not connected
properly
Check the connection of the plug
“1” and plug “19”
Provide reliable connection
of the plugs “1” and “19”
RCM malfunction
Check if the reading in the
malfunction log "RCM fault" is
present
Replace the RCM
Malfunction of the wiring
connecting the RCM
and the CPM
If the new CPM with new wiring
works properly, replace the new
wiring with the old one
If the new CPM doesn't work
properly with the old wiring it is a
wiring malfunction
Replace the wiring
CPM malfunction
If the new CPM works properly with
the old wiring it is a CPM
Replace the CPM
malfunction
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
124
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)
2)
3)
4)
5)
Switch off the battery circuit breaker;
Disconnect the plug “13” from the RCM;
Disconnect the wires from the battery terminals - the minus terminal should be disconnected first;
Unscrew four bolts from the battery fixing plate (see Figure 93);
Remove the Battery.
126
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
Battery terminals
Bolts
Fig.93. Battery fixing provisions.
12.3.4.2. Installation
1)
2)
3)
4)
5)
6)
Place the battery on the mounting frame inside the RC5_3;
Install battery fixing plate and fix it with four bolts;
Install plus terminal to the battery;
Install battery temperature sensor and minus terminal to the battery;
Connect the plug “13” to the RCM;
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)
2)
3)
4)
Turn the battery switch off;
Install “+” terminal to the battery “+” terminal;
Install battery sensor and minus terminal to the battery;
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
IEEE C37.60-2012
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
6.6
Short time withstand current and peak withstand
current tests
KEMA
KEMA_2268-15
6.7
Verification of the protection
KEMA
KEMA_1489-15
KEMA_1104-16
6.11
X-radiation test procedure for vacuum
interrupters
KEMA
KEMA_1493-15
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
6.111
Control electronic elements surge withstand
capability (SWC) tests
KEMA
KEMA_1475-15
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
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
PowerTech
PowerTech_18930-26
IEEE C37.60-2003
Transformer magnetizing current switching tests
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
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
6.13
Control electronic elements surge withstand
capability (SWC) tests
PowerTech
PowerTech_18490-27
IEC 60255-5
10.5.3
Lightning impulse withstand voltage test on
auxiliary and control circuits
KEMA
KEMA_1475-15
IEC 60068-2-1
-
Cold test - operational
KEMA
KEMA_1472-15
IEC 60068-2-2
-
Dry heat test - operational
KEMA
KEMA_1472-15
IEC 60068-2-5
-
Simulated solar radiation at ground level and
guidance for solar radiation test
KEMA
KEMA_1473-15
IEC 60068-2-30
-
Cyclic temperature with humidity test - operational KEMA
KEMA_1472-15
IEEE C37.60-2003
IEC 60870-5-104
Ed.2
-
Communication protocol test
KEMA
KEMA_1471-12
KEMA_12-01304
KEMA_E-16-I-008-AC
KEMA_E-16-I-009-AC
EDP Specification
-
Battery test
KEMA
KEMA_1471-12
ESKOM
Specification
-
Light-to-medium and heavy-to-very heavy
pollution test cycles
KIPTS
KIPTS 31-07-2010
129
TECHNICAL MANUAL
Type tests of Rec25_Al
Standard
Chapter Test name
6.2.6.1
6.2.6.1
6.2.6.2
Test center name Test report
KEMA
KEMA_1490-15
CESI
CESI_B3002266
KEMA
KEMA_1490-15
CESI
CESI_B3002266
KEMA
KEMA_1490-15
CESI
CESI_B3002266
Power-frequency withstand voltage test (dry)
Power-frequency withstand voltage test (wet)
Lightning impulse withstand voltage test
6.4
Measurement of the resistance of the main circuit
KEMA
KEMA_1491-15
6.5
Temperature-rise tests
KEMA
KEMA_1491-15
6.6
Short time withstand current and peak withstand
current tests
KEMA
KEMA_2269-15
Verification of the protection
KEMA
KEMA_1489-15
KEMA_1104-16
6.11
X-radiation test procedure for vacuum
interrupters
KEMA
KEMA_1493-15
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
6.111
Control electronic elements surge withstand
capability (SWC) tests
KEMA
KEMA_1492-15
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
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
IEEE C37.60-2012 6.7
IEEE C37.60-2003
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
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
IEC 60255-5
10.5.3
Lightning impulse withstand voltage test on
auxiliary and control circuits
KEMA
KEMA_1475-15
IEC 60068-2-1
-
Cold test - operational
KEMA
KEMA_1472-15
IEC 60068-2-2
-
Dry heat test - operational
KEMA
KEMA_1472-15
IEC 60068-2-5
-
Simulated solar radiation at ground level and
guidance for solar radiation test
KEMA
KEMA_1473-15
IEC 60068-2-30
-
Cyclic temperature with humidity test - operational KEMA
KEMA_1472-15
IEC 60870-5-104
Ed.2
-
Communication protocol test
KEMA
KEMA_1471-12
KEMA_12-01304
KEMA_E-16-I-008-AC
KEMA_E-16-I-009-AC
EDP Specification
-
Battery test
KEMA
KEMA_1471-12
ESKOM
Specification
-
Light-to-medium and heavy-to-very heavy
pollution test cycles
KIPTS
KIPTS 31-07-2010
IEEE C37.60-2003
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
current
characteristic
TCC
IEC: Extremely Inverse (EI), Very Inverse (VI), Inverse (I)
TD
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
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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:
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TECHNICAL MANUAL
2nd section
3rd section
Fig.96. ANSI TCC (1st section absent)
If Tmin < Tadd 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
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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, Tb - current and time corresponding to the beginning of particular section;
Ie, Te - current and time corresponding to the end of particular section.
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
136
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)
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TECHNICAL MANUAL
Table 117. TEL I TCC settings
Settings
Designation
Range
Resolution
Default
NA
1/2/3
NA
3
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
Ip
10-6000 A
1A
100 A
First intermediate current
I1
10-6000 A
1A
500 A
Second intermediate current
I2
10-6000 A
1A
1000 A
Maximum current
I max
10-6000 A
1A
3000 A
First section asymptote
I as1
1-6000 A
1A
10 A
Second section asymptote
I as2
1-6000 A
1A
10 A
Third section asymptote
I as3
1-6000 A
1A
10 A
Number of sections
Maximum time
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
330
ITS dimensions
ITS/TEL-01
TAVRIDA ELECTRIC
406
174
Fig.107. ITS overall dimensions with closed case cover
0°
430
11
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
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
Connections to Control Cable (control circuits)
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)
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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)
X1
X2
OSM15_Al_1/OSM25_Al_1
TEE_RecUnit_RC5_3
X2
X1
+Ia1 2
10
+Ia1
-Ia1
9
14
-Ia1
+Ib1 5
11
+Ib1
-Ib1 12
15
-Ib1
+Ic1 42
12
+Ic1
-Ic1 35
16
-Ic1
CTA
CTB
CTC
9
C1
C2
C3
+Ua1 4
18
+Ua1
-Ua1 11
22
-Ua1
+Ub1 7
19
+Ub1
-Ub1 14
23
-Ub1
+Uc1 40
20
+Uc1
24
-Uc1
-Uc1 33
-Uc1
13
Q1
CT0A
CT0B
CT0C
+I0
1
-I0
8
-Uc1
17 +I0
21
-I0
25
C4
C5
C6
Manual
Trip
+Ua2 3
26
-Ua2 10
30
+Ua2
-Ua2
+Ub2 6
27
+Ub2
-Ub2 13
31 -Ub2
+Uc2 41
28
+Uc2
-Uc2 34
32
-Uc2
29
SW1
1
2
EM1 39
1
EM1
EM2 37
3
EM2
2
1SW2
4
Aux2.1 29
5
Aux2.1
Aux2.2 22
7
Aux2.2
8
4
Screen
6
*
LENGHT ACCORDING TO PURCHASE ORDER
Screen
4
6
GND1
Fig.113. RecUnit_Umbilical_5 wiring diagram
147
TECHNICAL MANUAL
Fig.114. RecUnit_Umbilical_0 wiring diagram
REC SERIES AUTOMATIC CIRCUIT RECLOSERS
Fig.115. TER_RecUnit_Harness_78 wiring diagram
Fig.116. TER_RecUnit_Harness_2 wiring diagram
148
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
"9"
WA:RCM-DPS
RECLOSER CONTROL MODULE
DOOR
DPS
WAKEUP_DPS
C
1
GNDDOOR
2
NO
Fig.120. TER_RecUnit_Harness_74 wiring diagram
"23"
COM2_DCD
COM2_RX
COM2_TX
COM2_DTR
RTU (OPTIONAL)
COM2_DSR
COM2_RTS
COM2_CTS
COM2_RI
GND
WA:MPM-RTU
"6"
1
1
2
2
3
3
4
4
6
6
7
7
8
8
9
9
5
5
Fig.121. TER_RecUnit_Harness_74 wiring diagram
COM2_DCD
COM2_RX
COM2_TX
COM2_DTR
COM2_DSR
COM2_RTS
COM2_CTS
COM2_RI
GND
RECLOSER CONTROL MODULE
151
TECHNICAL MANUAL
Rec series recloser principal diagram
Fig.122. Rec series recloser principal diagram
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rev. 2. 1.4.2018
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