Siemens Solkor 7PG2113 User manual

Answers for energy
7PG2113/4/5/6 Solkor
Feeder Protection
Reyrolle
Protection
Devices

7PG2113/4/5/6 Solkor Contents
The copyright and other intellectual property rights in this document, and in any model or article produced from it
(and including any registered or unregistered design rights) are the property of Siemens Protection Devices
Limited. No part of this document shall be reproduced or modified or stored in another form, in any data retrieval
system, without the permission of Siemens Protection Devices Limited, nor shall any model or article be
reproduced from this document unless Siemens Protection Devices Limited consent.
While the information and guidance given in this document is believed to be correct, no liability shall be accepted
for any loss or damage caused by any error or omission, whether such error or omission is the result of
negligence or any other cause. Any and all such liability is disclaimed.
©2010 Siemens Protection Devices Limited
Contents
Technical Manual Chapters
1. Description of Operation
2. Settings
3. Performance Specification
4. Communications
5. Installation
6. Commissioning and Maintenance
7. Applications Guide

7PG2113/4/5/6 Solkor Description of Operation
The copyright and other intellectual property rights in this document, and in any model or article produced from it
(and including any registered or unregistered design rights) are the property of Siemens Protection Devices
Limited. No part of this document shall be reproduced or modified or stored in another form, in any data retrieval
system, without the permission of Siemens Protection Devices Limited, nor shall any model or article be
reproduced from this document unless Siemens Protection Devices Limited consent.
While the information and guidance given in this document is believed to be correct, no liability shall be accepted
for any loss or damage caused by any error or omission, whether such error or omission is the result of
negligence or any other cause. Any and all such liability is disclaimed.
©2010 Siemens Protection Devices Limited
7PG2113/4/5/6
Feeder Protection
Document Release History
This document is issue 2010/08. The list of revisions up to and including this issue is:
2010/08 First Issue
Software Revision History
2009/04 2436H80003R1g-1c 7PG2113/5
2436H80004R1g-1c 7PG2114/6
First Release

7PG2113/4/5/6 Solkor Description of Operation
Contents
Section 1: Introduction ............................................................................................................................................. 6
1.1 General Safety Precautions .................................................................................................................... 6
1.1.1 Current Transformer Circuits..................................................................................................... 6
1.1.2 External Resistors..................................................................................................................... 6
1.1.3 Front Cover ............................................................................................................................... 6
Section 2: Hardware Description............................................................................................................................ 15
2.1 General ................................................................................................................................................. 15
2.2 Case...................................................................................................................................................... 16
2.3 Front Cover ........................................................................................................................................... 17
2.4 Power Supply Unit (PSU)...................................................................................................................... 17
2.5 Operator Interface/ Fascia .................................................................................................................... 17
2.6 Current Inputs ....................................................................................................................................... 21
2.7 Voltage Inputs ....................................................................................................................................... 21
2.8 Binary Inputs ......................................................................................................................................... 22
2.9 Binary Outputs (Output Relays) ............................................................................................................ 22
2.10 Virtual Input/Outputs ............................................................................................................................. 24
2.11 Self Monitoring ...................................................................................................................................... 24
2.11.1 Protection Healthy/Defective................................................................................................... 24
Section 3: Current Differential Protection Function ................................................................................................ 25
3.1 Description ............................................................................................................................................ 25
3.2 Operation .............................................................................................................................................. 27
3.3 Theory of Summation Transformer ....................................................................................................... 34
Section 4: Numeric Protection Module Functions .................................................................................................. 35
4.1 Current Protection: Phase Overcurrent (67, 51, 50).............................................................................. 35
4.1.1 Directional Control of Overcurrent Protection (67) – 7PG2114/6 ............................................ 35
4.1.2 Instantaneous Overcurrent Protection (50) ............................................................................. 37
4.1.3 Time Delayed Overcurrent Protection (51).............................................................................. 38
4.1.4 Current Protection: Voltage Controlled Overcurrent (51V) – 7PG2114/6................................ 40
4.2 Current Protection: Derived Earth Fault (67N, 51N, 50N) ..................................................................... 41
4.2.1 Directional Control of Derived Earth Fault Protection (67N) – 7PG2114/6.............................. 41
4.2.2 Instantaneous Derived Earth Fault Protection (50N)............................................................... 42
4.2.3 Time Delayed Derived Earth Fault Protection (51N) ............................................................... 43
4.3 Current Protection: Measured Earth Fault (67G, 51G, 50G)................................................................. 45
4.3.1 Directional Control of Measured Earth Fault Protection (67G) – 7PG2114/6 .......................... 45
4.3.2 Instantaneous Measured Earth Fault Protection (50G)........................................................... 46
4.3.3 Time Delayed Measured Earth Fault Protection (51G) ........................................................... 47
4.4 Current Protection: High Impedance Restricted Earth Fault - (64H) ..................................................... 49
4.5 Current Protection: Cold Load (51c) ..................................................................................................... 50
4.6 Current Protection: Negative Phase Sequence Overcurrent - (46NPS) ................................................ 51
4.7 Current Protection: Under-Current (37)................................................................................................. 52
4.7.1 Current Protection: Thermal Overload (49) ............................................................................. 53
4.8 Voltage Protection: Phase Under/Over Voltage (27/59) – 7PG2114/6.................................................. 55
4.9 Voltage Protection: Negative Phase Sequence Overvoltage (47) – 7PG2114/6................................... 56
4.10 Voltage Protection: Neutral Overvoltage (59N) – 7PG2114/6 ............................................................... 57
Section 5: Control & Logic Functions ..................................................................................................................... 58
5.1 Auto-Reclose (79) Optional Function .................................................................................................... 58
5.1.1 Overview ................................................................................................................................. 58
5.1.2 Auto Reclose sequences ........................................................................................................ 60
5.1.3 Autoreclose Prot’n Menu......................................................................................................... 61
5.1.4 Autoreclose Config Menu........................................................................................................ 61
5.1.5 P/F Shots sub-menu ............................................................................................................... 63
5.1.6 E/F Shots sub-menu ............................................................................................................... 63
5.1.7 SEF Shots sub-menu.............................................................................................................. 63
5.1.8 Extern Shots sub-menu........................................................................................................... 64
©2010 Siemens Protection Devices Limited Chapter 1 Page 2 of 80

7PG2113/4/5/6 Solkor Description of Operation
5.2 Manual Close ........................................................................................................................................ 66
5.3 Circuit Breaker (CB) .............................................................................................................................. 66
5.4 Quick Logic ........................................................................................................................................... 68
Section 6: Supervision Functions........................................................................................................................... 70
6.1 Circuit Breaker Failure (50BF) .............................................................................................................. 70
6.2 VT Supervision (60VTS) – 7PG2114/6 ................................................................................................. 71
6.3 CT Supervision (60CTS) ....................................................................................................................... 73
6.3.1 60CTS – 7PG2113/5............................................................................................................... 73
6.3.2 60CTS – 7PG2114/6............................................................................................................... 73
6.4 Broken Conductor (46BC)..................................................................................................................... 74
6.5 Trip/ Close Circuit Supervision (74TCS & 74CCS) ............................................................................... 75
6.6 2nd Harmonic Block/Inrush Restraint (81HBL2) phase elements only.................................................. 76
6.7 Demand ................................................................................................................................................ 76
Section 7: Other Features...................................................................................................................................... 77
7.1 Data Communications........................................................................................................................... 77
7.2 CB Maintenance ................................................................................................................................... 77
7.2.1 Output Matrix Test .................................................................................................................. 77
7.2.2 CB Counters ........................................................................................................................... 77
7.2.3 I2t CB Wear ............................................................................................................................. 77
7.3 Data Storage......................................................................................................................................... 78
7.3.1 General ................................................................................................................................... 78
7.3.2 Event Records ........................................................................................................................ 78
7.3.3 Waveform Records. ................................................................................................................ 78
7.3.4 Fault Records.......................................................................................................................... 78
7.4 Metering ................................................................................................................................................ 79
7.5 Operating Mode .................................................................................................................................... 79
7.6 Control Mode ........................................................................................................................................ 79
7.7 Real Time Clock.................................................................................................................................... 80
7.7.1 Time Synchronisation – Data Communication Interface ......................................................... 80
7.7.2 Time Synchronisation – Binary Input ...................................................................................... 80
7.8 Settings Groups .................................................................................................................................... 80
7.9 Password Feature................................................................................................................................. 80
©2010 Siemens Protection Devices Limited Chapter 1 Page 3 of 80

7PG2113/4/5/6 Solkor Description of Operation
List of Figures
Figure 1.1-1 Functional Diagram of 7PG2113/5 Relay with Autoreclose ................................................................. 8
Figure 1.1-2 Connections Diagram for 7PG2113 Relay........................................................................................... 9
Figure 1.1-3 Connections Diagram for 7PG2115 Relay......................................................................................... 10
Figure 1.1-4 Functional Diagram of 7PG2114/6 Relay with Autoreclose ............................................................... 12
Figure 1.1-5 Connections Diagram for 7PG2114 Relay......................................................................................... 13
Figure 1.1-6 Connections Diagram for 7PG2116 Relay......................................................................................... 14
Figure 2.2-1 Relay shown withdrawn ..................................................................................................................... 16
Figure 2.2-2 Rear view of 7PG2113/4/5/6 Relay................................................................................................... 16
Figure 2.2-3 Earth Symbol ..................................................................................................................................... 16
Figure 2.3-1 Relay with standard transparent cover .............................................................................................. 17
Figure 2.5-1 Relay with Transparent cover removed ............................................................................................. 17
Figure 2.5-2 Close up of typical relay labels .......................................................................................................... 18
Figure 2.5-3 Close up of Relay Identifier................................................................................................................ 19
Figure 2.5-4 LED Indication Label.......................................................................................................................... 21
Figure 2.8-1 Binary Input Logic .............................................................................................................................. 22
Figure 2.9-1 Binary Output Logic ........................................................................................................................... 23
Figure 3.1-1 Solkor Rf schematic........................................................................................................................... 25
Figure 3.1-2 Solkor R schematic............................................................................................................................ 25
Figure 3.1-3 Solkor Rf 15kV schematic.................................................................................................................. 26
Figure 3.2-1 Through Fault, zero ohm pilots, Positive half cycle............................................................................ 28
Figure 3.2-2 Through Fault, zero ohm pilots, Negative half cycle. ......................................................................... 28
Figure 3.2-3 Through Fault, 1000 ohm pilots, Positive half cycle........................................................................... 29
Figure 3.2-4 Through Fault, 1000 ohm pilots, Negative half cycle. ........................................................................ 29
Figure 3.2-5 Through fault Rf mode, positive half cycle ......................................................................................... 30
Figure 3.2-6 Through fault Rf mode, negative half cycle........................................................................................ 30
Figure 3.2-7 Through fault Rf mode, positive half cycle ......................................................................................... 31
Figure 3.2-8 Through fault Rf mode, negative half cycle........................................................................................ 31
Figure 3.2-9 Internal fault Rf mode, positive half cycle .......................................................................................... 32
Figure 3.2-10 Internal fault Rf mode, negative half cycle ....................................................................................... 32
Figure 3.2-11 Single End Fed fault Rf mode, positive half cycle ............................................................................ 33
Figure 3.2-12 Single End Fed fault Rf mode, negative half cycle .......................................................................... 33
Figure 4.1-1 Logic Diagram: Directional Overcurrent Element (67) ....................................................................... 36
Figure 4.1-2 Logic Diagram: Instantaneous Over-current Element ........................................................................ 37
Figure 4.1-3 Logic Diagram: Time Delayed Overcurrent Element.......................................................................... 39
Figure 4.1-4 Logic Diagram: Voltage Controlled Overcurrent Protection ............................................................... 40
Figure 4.2-1 Logic Diagram: Derived Directional Earth Fault Element................................................................... 42
Figure 4.2-2 Logic Diagram: Derived Instantaneous Earth Fault Element ............................................................. 43
Figure 4.2-3 Logic Diagram: Derived Time Delayed Earth Fault Protection........................................................... 44
Figure 4.3-1 Logic Diagram: Measured Directional Earth Fault Protection ............................................................ 45
Figure 4.3-2 Logic Diagram: Measured Instantaneous Earth-fault Element........................................................... 46
Figure 4.3-3 Logic Diagram: Measured Time Delayed Earth Fault Element (51G) ................................................ 48
Figure 4.4-1 Logic Diagram: High Impedance REF (64H) ..................................................................................... 49
Figure 4.5-1 Logic Diagram: Cold Load Settings (51c) .......................................................................................... 50
Figure 4.6-1 Logic Diagram: Negative Phase Sequence Overcurrent (46NPS)..................................................... 51
Figure 4.7-1 Logic Diagram: Relays with 4 Current Inputs Undercurrent Detector (37) ......................................... 52
Figure 4.7-2 Logic Diagram: Relays with 1 Current Inputs Undercurrent Detector (37) ......................................... 52
Figure 4.7-3 Logic Diagram: Thermal Overload Protection (49S) .......................................................................... 54
Figure 4.8-1 Logic Diagram: Under/Over Voltage Elements (27/59)...................................................................... 55
Figure 4.9-1 Logic Diagram: NPS Overvoltage Protection (47).............................................................................. 56
Figure 4.10-1 Logic Diagram: Neutral Overvoltage Element (59N)........................................................................ 57
©2010 Siemens Protection Devices Limited Chapter 1 Page 4 of 80

7PG2113/4/5/6 Solkor Description of Operation
©2010 Siemens Protection Devices Limited Chapter 1 Page 5 of 80
Figure 5.1-1 Typical AR Sequence with 3 Inst and 1 Delayed trip ......................................................................... 60
Figure 5.1-2 Basic Auto-Reclose Sequence Diagram............................................................................................ 65
Figure 5.3-1 Logic Diagram: Circuit Breaker Status............................................................................................... 67
Figure 5.4-1 Sequence Diagram: Quick Logic PU/DO Timers (Counter Reset Mode Off) ..................................... 69
Figure 6.1-1 Logic Diagram: Circuit Breaker Fail Protection (50BF) ...................................................................... 70
Figure 6.2-1 Logic Diagram: VT Supervision Function (60VTS) ............................................................................ 72
Figure 6.3-1 Logic Diagram: CT Supervision Function (60CTS) – 7PG2113/5 ...................................................... 73
Figure 6.3-2 Logic Diagram: CT Supervision Function (60CTS) – 7PG2114/6 ...................................................... 74
Figure 6.4-1 Logic Diagram: Broken Conductor Function (46BC).......................................................................... 74
Figure 6.5-1 Logic Diagram: Trip Circuit Supervision Feature (74TCS)................................................................. 75
Figure 6.5-2 Logic Diagram: Close Circuit Supervision Feature (74CCS) ............................................................. 75
Figure 6.6-1 Functional Diagram for Harmonic Block Feature (81HBL2)............................................................... 76
List of Tables
Table 1-1 7PG2113/5 Ordering Options .................................................................................................................. 7
Table 1-2 7PG2114/6 Ordering Options ................................................................................................................ 11
Table 1-3 Summary of Compact Relay Configurations .......................................................................................... 15
Table 3-1 Summation Transformer Output ............................................................................................................ 34
Table 7-1 CB Counters .......................................................................................................................................... 77
Table 7-2 Operating Modes ................................................................................................................................... 79
Symbols and Nomenclature
The following notational and formatting conventions are used within the remainder of this document:
•Setting Menu Location MAIN MENU>SUB-MENU
•Setting: Elem name -Setting
•Setting value: value
•Alternatives: [1st] [2nd] [3rd]

7PG2113/4/5/6 Solkor Description of Operation
Section 1: Introduction
This manual is applicable to the following relays:
•7PG2113/5 Pilot Wire Differential Relay with Overcurrent and Earth Fault Relay
•7PG2114/6 Pilot Wire Differential Relay with Directional Overcurrent and Directional Earth Fault Relay
The ‘Ordering Option’ Tables summarise the features available in each model
1.1 General Safety Precautions
1.1.1 Current Transformer Circuits
! The secondary circuit of a live CT must not be open circuited. Non-observance of this precaution can
result in injury to personnel or damage to equipment.
1.1.2 External Resistors
Where external resistors are connected to the relay circuitry, these may present a danger of electric
shock or burns, if touched.
!
1.1.3 Front Cover
! The front cover provides additional securing of the relay element within the case. The relay cover
should be in place during normal operating conditions.
©2010 Siemens Protection Devices Limited Chapter 1 Page 6 of 80

7PG2113/4/5/6 Solkor Description of Operation
Table 1-1 7PG2113/5 Ordering Options
1234567 89101112 13141516
ORDER-No.: 7PG211 - A12 -1 0
||| ||||| ||||
Protection Product Famil
y
5
|
|
|
|
|
|
|
|
|
|
|
Solkor R/Rf Scheme 1
|
|
|
|
|
|
|
|
|
|
|
|| ||||| ||||
Rela
y
T
yp
e6
|
|
|
|
|
|
|
|
|
|
Solkor R/Rf 1
|
|
|
|
|
|
|
|
|
|
| ||||| ||||
Case
,
I/O and Fascia 7
|
|
|
|
|
|
|
|
|
Non Directional OC, E10 case, 4 CT, 3 Binary Inputs / 5 Binary Outputs, 10 LEDs
3
|
|
|
|
|
|
C
|
|
Non Directional OC, E10 case, 4 CT, 6 Binary Inputs / 8 Binary Outputs, 10 LEDs
5
|
|
|
|
|
|
|
|
|
||||| ||||
Measurin
g
in
p
ut 8
|
|
|
|
|
|
|
|
1A, 50/60Hz 1
|
|
|
|
|
|
|
|
5A, 50/60Hz 2
|
|
|
|
|
|
|
|
|||| ||||
Auxiliar
y
volta
g
e9
|
|
|
|
|
|
|
80-250V DC, binary input threshold 19V DC G||| ||||
80-250V DC, binary input threshold 88V DC H||| ||||
24-60V DC, binary input threshold 19V DC J||| ||||
||| ||||
S
p
are 10 || ||||
A
|
|
|
|
|
|
|| ||||
Communication Interface 11
|
|
|
|
|
Standard version - included in all models, USB front port, RS485 rear port 1
|
|
|
|
|
| ||||
Protocol 12
|
|
|
|
IEC 60870-5-103, Modbus RTU and DNP3(user selectable setting) 2||||
||||
S
p
are 13
|
|
|
1
|
|
|
|||
Protection Function Packa
g
es 14
|
|
For future development
A
|
|
For future development B||
Standard version - included in all models C
|
|
37 Undercurrent ||
46BC Broken conductor/load unbalance ||
46NPS Negative phase sequence overcurrent ||
49 Thermal overload ||
50BF Circuit breaker fail ||
50G/50N Instantaneous earth fault ||
50 Instantaneous phase fault overcurrent ||
51 Time delayed phase fault overcurrent ||
51G/51N Time delayed earth fault ||
60CTS CT Supervision ||
64H High impedance REF ||
74TCS Trip circuit supervision ||
51c Cold load pickup ||
81HBL2 Inrush Restraint ||
Programmable logic ||
Standard version - plus D
|
|
79 Autoreclose
|
|
||
Solkor Mode 1) 15
|
Solkor Rf
A
|
Solkor R B|
|
S
p
are 16
0
1)Default mode when supplied, relay mode is easily changed later my internal links
©2010 Siemens Protection Devices Limited Chapter 1 Page 7 of 80

7PG2113/4/5/6 Solkor Description of Operation
Figure 1.1-1 Functional Diagram of 7PG2113/5 Relay with Autoreclose
©2010 Siemens Protection Devices Limited Chapter 1 Page 8 of 80

7PG2113/4/5/6 Solkor Description of Operation
Figure 1.1-2 Connections Diagram for 7PG2113 Relay
©2010 Siemens Protection Devices Limited Chapter 1 Page 9 of 80

7PG2113/4/5/6 Solkor Description of Operation
Figure 1.1-3 Connections Diagram for 7PG2115 Relay
©2010 Siemens Protection Devices Limited Chapter 1 Page 10 of 80

7PG2113/4/5/6 Solkor Description of Operation
Table 1-2 7PG2114/6 Ordering Options
1234567 89101112 13141516
ORDER-No.: 7 P G 2 1 1 - A 1 2 - 1 0
||| ||||| ||||
Protection Product Famil
y
5
|
|
|
|
|
|
|
|
|
|
|
Solkor R/Rf Scheme 1
|
|
|
|
|
|
|
|
|
|
|
|| ||||| ||||
Rela
y
T
y
pe
6
|
|
|
|
|
|
|
|
|
|
Solkor R/Rf 1| ||||| ||||
| ||||| ||||
Case, I/O and Fascia
7
|
|
|
|
|
|
|
|
|
Directional OC, E10 case, 4 CT, 3 VT, 3 Binary Inputs / 5 Binary Outputs, 10 LEDs
4
|
|
|
|
|
|
C
|
|
Directional OC, E10 case, 4 CT, 3VT, 6 Binary Inputs / 8 Binary Outputs, 10 LEDs
6
|
|
|
|
|
|
|
|
|
||||| ||||
Measurin
g
input
8
|
|
|
|
|
|
|
|
1A, 50/60Hz 1
|
|
|
|
|
|
|
|
5A, 50/60Hz 2|||| ||||
|||| ||||
Auxiliar
y
volta
g
e
9
||| ||||
80-250V DC, binary input threshold 19V DC G
||| ||||
80-250V DC, binary input threshold 88V DC H
||| ||||
24-60V DC, binary input threshold 19V DC J
||| ||||
||| ||||
Spare
10
|
|
|
|
|
|
A
|| ||||
|| ||||
Communication Interface
11
| ||||
Standard version - included in all models, USB front port, RS485 rear port 1
|
|
|
|
|
| ||||
Protocol
12
|
|
|
|
IEC 60870-5-103, Modbus RTU and DNP3(user selectable setting) 2
|
|
|
|
||||
Spare
13
|
|
|
1|||
|||
Protection Function Packa
g
es
14
|
|
For future development
A
|
|
For future development B
|
|
Standard version - included in all models
C
|
|
27/59 Under/Over Voltage
||
37 Undercurrent
||
46BC Broken conductor/load unbalance
||
46NPS Negative phase sequence overcurrent
||
47 Negative phase sequence voltage
||
49 Thermal overload
||
50BF Circuit breaker fail
||
51V Voltage Controlled Overcurrent
||
59N Neutral voltage displacement
||
60CTS CT Supervision
||
60VTS VT Supervision
||
64H High impedance REF
||
67/50 Directional instantaneous phase fault overcurrent
||
67/50G 67/50N Directional instantaneous earth fault
||
67/51 Directional time delayed phase fault overcurrent
||
67/51G 67/51N Directional time delayed earth fault
||
74TCS Trip circuit supervision
||
51c Cold load pickup
||
81HBL2 Inrush Restraint
||
Programmable logic
||
Standard version - plus D||
79 Autoreclose
|
|
||
Solkor Mode
1)
15
|
Solkor Rf
A
|
Solkor R B
|
|
Spare
16
0
1)
Default mode when supplied, relay mode is easily changed later by internal links
©2010 Siemens Protection Devices Limited Chapter 1 Page 11 of 80

7PG2113/4/5/6 Solkor Description of Operation
7PG2114-__A12-1D_0
IL1
IL2
IL3
1
2
3
N
7PG2116-__A12-1D_0
87L
A
B
C
N
46
BC
46
NPS
(x2)
37
(x2) 49 50 BF
VL1
VL2
VL3
IL1
37
(x2) 49 50 BF
IL2
37
(x2) 49 50 BF
IL3
60
CTS
60
VTS
I4
NOTE:
The use of some functions
are mutually exclusive
67/
50
(x4)
67/
51
(x4)
67/
50N
(x4)
67/
50
(x4)
67/
50
(x4)
67/
51
(x4)
67/
51
(x4)
67/
51N
(x4)
67/
50G
(x4)
67/
51G
(x4)
27
59
(x4)
27
59
(x4)
27
59
(x4)
59N
(x2)
50
BF
47
51V
51V
51V
79
74
CCS
(x3)
74
TCS
(x3)
64H
51c
86
81H
BL2
81H
BL2
37
Figure 1.1-4 Functional Diagram of 7PG2114/6 Relay with Autoreclose
©2010 Siemens Protection Devices Limited Chapter 1 Page 12 of 80

7PG2113/4/5/6 Solkor Description of Operation
©2010 Siemens Protection Devices Limited Chapter 1 Page 13 of 80
Figure 1.1-5 Connections Diagram for 7PG2114 Relay

7PG2113/4/5/6 Solkor Description of Operation
Figure 1.1-6 Connections Diagram for 7PG2116 Relay
©2010 Siemens Protection Devices Limited Chapter 1 Page 14 of 80

7PG2113/4/5/6 Solkor Description of Operation
Section 2: Hardware Description
2.1 General
The relay combines the Current Differential function of a Solkor R/Rf relay with the functions and flexibility of a
modern numeric protection device.
Solkor R & Rf are well established Pilot Wire Current Differential Protection for use with privately owned 2 core
pilots with relatively high core resistance.
Solkor R/Rf protection benefits from the following main features:
•High transient stability
•High speed operation (<60ms)
•Little or no variation of settings with pilot length
•Up to 20% of rated load can be tapped off from inside of the protection zone.
•Easy to install, commission and maintain
•15kV pilot isolation option
•Easily reconnected as either Solkor Rf or Solkor R
•Pilot wire supervision schemes available
•Remote end injection intertripping via pilot cores available
The structure of the numeric guard module is based upon the Reyrolle Compact hardware platform. The
combined relay is supplied in a size E10 case (where 1 x E = width of approx. 26mm). The hardware design
provides commonality between products and components across the Reyrolle Compact range of relays.
Table 1-3 Summary of Compact Relay Configurations
Relay Current
Inputs Voltage Inputs Binary Inputs Programmable Binary Outputs Fixed 87L Binary outputs LEDs
7PG2113 4 0 3 5 3 10
7PG2115 4 0 6 8 3 10
7PG2114 4 3 3 5 3 10
7PG2116 4 3 6 8 3 10
Numeric modules are assembled from the following printed circuit boards:
1) Front Fascia with 9 configurable LEDs and 1 Relay Healthy LED.
2) Processor module.
3) Current Analogue / Output module
4 x Current + 5 x Binary Outputs (BO)
4) Voltage Analogue / Input / output module
3 x Voltage (7PG2114)
3 x Voltage + 3 x Binary Input and 3 x Binary Output Module. (7PG2116)
5) Power Supply and 3 x Binary Input (BI) and RS485.
©2010 Siemens Protection Devices Limited Chapter 1 Page 15 of 80

7PG2113/4/5/6 Solkor Description of Operation
2.2 Case
The relays are housed in cases designed to fit directly into standard panel racks. The case has a width of 260mm
and a height of 177 mm (4U). The required panel depth (with wiring clearance) is 242 mm.
The relay modules are withdrawable from the front of the case. Contacts in the case ensure that the CT circuits
and normally closed contacts remain short-circuited when the relay is removed. To withdraw the relay modules
remove the front cover by rotating the six securing pins and withdraw using the module handles. The relay
modules should not be carried using these handles..
Figure 2.2-1 Relay shown withdrawn
The rear terminal blocks comprise M4 female terminals for wire connections. Each terminal can accept two 4mm
crimps.
Figure 2.2-2 Rear view of 7PG2113/4/5/6 Relay
Located at the top rear of the case is a screw clamp earthing point, this must be connected to terminal B28 and
directly to the main panel earth. This connection point is indicated by the following symbol.
Figure 2.2-3 Earth Symbol
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7PG2113/4/5/6 Solkor Description of Operation
2.3 Front Cover
As standard the relay is supplied with a transparent front cover. The front cover is used to secure the relay
modules in the case.
Figure 2.3-1 Relay with standard transparent cover
2.4 Power Supply Unit (PSU)
The relay can be ordered with two different nominal power supply ranges, 24V to 60V and 80V to 320V dc. The
Solkor R/Rf module does not require an auxiliary supply and is universal for all DC ratings.
In the event of the supply voltage level falling below the relay minimum operate level the PSU will automatically
switch itself off and latch out – this prevents any PSU overload conditions occurring. The PSU is reset by
switching the auxiliary supply off and on.
2.5 Operator Interface/ Fascia
The operator interface is designed to provide a user-friendly method of controlling, entering settings and retrieving
data from the relay. Links are provided to allow setting of pilot padding resistance and test points are provided to
allow operating spill current to be measured.
Figure 2.5-1 Relay with Transparent cover removed
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7PG2113/4/5/6 Solkor Description of Operation
The fascia is an integral part of the relay modules. Handles are located on the modules which allow them to be
withdrawn from the relay case. The relay should not be carried by these handles.
Relay Information
Above the LCD two labels are provided, these provide the following information:
1) Product Information & Rating Label, containing
MLFB ordering code
Nominal current rating
Rated frequency
Voltage rating
Auxiliary supply rating
Binary input supply rating
Serial number
2) Purpose inscription label marked ‘Solkor’.
Figure 2.5-2 Close up of typical relay labels
A ‘template’ is available in Reydisp Software to allow users to create and print customised purpose inscription
labels.
©2010 Siemens Protection Devices Limited Chapter 1 Page 18 of 80