Siemens Argus 7SR12 User manual

Energy Management
7SR11 & 7SR12 Argus
Overcurrent Relay
Reyrolle
Protection
Devices

7SR11 & 7SR12 Argus 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.
©2014 Siemens Protection Devices Limited
Contents
Technical Manual Chapters
1. Description of Operation
2. Settings, Configuration & Instruments
3. Performance Specification
4. Data Communications
5. Installation
6. Commissioning and Maintenance
7. Applications Guide

7SR11 & 7SR12 Argus Contents
©2015 Siemens Protection Devices Limited Page 2 of 2

7SR11 & 7SR12 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.
©2017 Siemens Protection Devices Limited
7SR11 and 7SR12
Description of Operation
Document Release History
This document is issue 2017/05. The list of revisions up to and including this issue is:
2017/05 Universal PSU introduced. Clauses added to suit IEC 60255-27
2017/04 Universal PSU introduced and Software maintenance
2017/02 Minor mods. General pickup added, Fibre Optic safety note added
2015/12 Minor error corrected, 50LC diagram showed directional inputs
2015/08 Additional software features added.
2015/06 Software Version added. No changes to document
2014/12 Minor modifications and corrections
2014/10 Addition of optional IEC 61850 communication protocol.
2013/09 Software Maintenance
2013/01 Software Maintenance
2012/02 AC auxiliary power supply added
2012/01 Software Maintenance
2011/06 Software Maintenance
2010/04 Amendments following technical review
2010/02 Document reformat due to rebrand
2009/09 Format and relay fascia revised.
2009/04 First Issue

7SR11 & 7SR12 Description Of Operation
Chapter 1 Page 2 of 88 ©2017 Siemens Protection Devices Limited
Software Revision History
2017/04 7SR11 2436H80003 R4g-3c
7SR12 2436H80004 R4g-3c
PTRC Trip time upgrade.
RFLT Logical node change to add fault currents.
Operating system upgrade.
2015/08 7SR11 2436H80003 R4b-3b
7SR12 2436H80004 R4b-3b
Addition of 50AFD Arc Detection and
32, 32S and 55 Power Protection elements.
ACB Phase Rotation added.
2015/06 7SR11 2436H80003 R3b-3a
7SR12 2436H80004 R3b-3a
Minor changes to IEC 61850 implementation prior to release
of E6 models.
2014/10 7SR11 2436H80003 R3a-3a
7SR12 2436H80004 R3a-3a
Addition of optional IEC 61850 communication protocol.
IDMTL Time multiplier resolution increased.
UV Guard added to 47NPS
27/59 elements phase segregated output added.
2013/09 7SR11 2436H80003 R2c-2b
7SR12 2436H80004 R2c-2b
Further improvement to startup routines.
2013/01 7SR11 2436H80003 R2b-2b
7SR12 2436H80004 R2b-2b
Frequency(Hz) added to Fault Record & minor Fault Record
corrections.
Default Control password added.
Improvement to startup routines to prevent loss of data
2012/01 7SR11 2436H80003 R2a-2a
7SR12 2436H80004 R2a-2a
Power-on counter added.
Data Comms improvements
2011/06 7SR11 2436H80003 R2-2
7SR12 2436H80004 R2-2
First Maintenance,
IEC reset curves added
37G Undercurrent added, UV Guard added to 37 elements.
Line Check added to non-AR variants.
Minor changes to suit customer requests.
2009/04 2436H80003R1g-1c 7SR11
2436H80004R1g-1c 7SR12
First Release
Hardware Revision History
2015/08 FF Segregated Outputs variant introduced
NXP4337 microprocessor support added
2015/06 EE E6 hardware variants with IEC 61850 functionality introduced.
No changes to non-IEC61850 E4 hardware.
2014/01
DD
Circuit changes to improve startup
2012/04
CC
Support for AC PSU
2009/05
BB
First Release

7SR11 & 7SR12 Description Of Operation
©2017 Siemens Protection Devices Limited Chapter 1 Page 3 of 88
Contents
Section 1: Introduction............................................................................................................................................. 8
Section 2: Hardware Description............................................................................................................................ 18
2.1 General................................................................................................................................................. 18
2.2 Case...................................................................................................................................................... 19
2.3 Front Cover........................................................................................................................................... 20
2.4 Power Supply Unit (PSU)...................................................................................................................... 21
2.5 Operator Interface/ Fascia .................................................................................................................... 22
2.6 Current Inputs....................................................................................................................................... 25
2.7 Voltage Inputs....................................................................................................................................... 25
2.8 Binary Inputs......................................................................................................................................... 25
2.9 Binary Outputs (Output Relays)............................................................................................................ 26
2.10 Virtual Input/Outputs............................................................................................................................. 27
2.11 Self Monitoring...................................................................................................................................... 28
2.11.1 Protection Healthy/Defective................................................................................................... 30
Section 3: Protection Functions ............................................................................................................................. 31
3.1 Current Protection: Phase Overcurrent (67, 51, 50).............................................................................. 31
3.1.1 Directional Control of Overcurrent Protection (67) – 7SR12................................................... 31
3.1.2 Instantaneous Overcurrent Protection (50)............................................................................. 32
3.1.3 Time Delayed Overcurrent Protection (51).............................................................................. 33
3.1.4 Current Protection: Voltage Controlled Overcurrent (51V) - 7SR12........................................ 35
3.2 Current Protection: Derived Earth Fault (67N, 51N, 50N)..................................................................... 36
3.2.1 Directional Control of Derived Earth Fault Protection (67N) – 7SR12..................................... 36
3.2.2 Instantaneous Derived Earth Fault Protection (50N)............................................................... 37
3.2.3 Time Delayed Derived Earth Fault Protection (51N)............................................................... 37
3.3 Current Protection: Measured Earth Fault (67G, 51G, 50G)................................................................. 39
3.3.1 Directional Control of Measured Earth Fault Protection (67G) – 7SR12................................. 39
3.3.2 Instantaneous Measured Earth Fault Protection (50G)........................................................... 40
3.3.3 Time Delayed Measured Earth Fault Protection (51G)........................................................... 41
3.4 Current Protection: Sensitive Earth Fault (67SEF, 51SEF, 50SEF)...................................................... 42
3.4.1 Directional Control of Sensitive Earth Fault Protection (67SEF) – 7SR12.............................. 42
3.4.2 Instantaneous Sensitive Earth Fault Protection (50SEF)........................................................ 43
3.4.3 Time Delayed Sensitive Earth Fault Protection (51SEF) ........................................................ 45
3.5 Current Protection: High Impedance Restricted Earth Fault - (64H)..................................................... 47
3.6 Current Protection: Cold Load (51c) ..................................................................................................... 47
3.7 Current Protection: Negative Phase Sequence Overcurrent - (46NPS)................................................ 48
3.8 Current Protection: Under-Current (37)................................................................................................. 49
3.9 Current Protection: Thermal Overload (49)........................................................................................... 50
3.10 Current Protection: Line Check 50LC, 50G LC and 50SEF LC – Only software option ‘C’................... 51
3.11 Current Protection: Arc Flash Detector (50 AFD).................................................................................. 53
3.12 Voltage Protection: Phase Under/Over Voltage (27/59) – 7SR12......................................................... 54
3.13 Voltage Protection: Negative Phase Sequence Overvoltage (47) – 7SR12.......................................... 55
3.14 Voltage Protection: Neutral Overvoltage (59N) – 7SR12...................................................................... 55
3.15 Voltage Protection: Under/Over Frequency (81) – 7SR12.................................................................... 57
3.16 Power Protection: Power (32) – 7SR12 ................................................................................................ 58
3.17 Power Protection: Sensitive Power (32S) – 7SR12 .............................................................................. 59
3.18 Power Protection: Power Factor (55) – 7SR12..................................................................................... 60
Section 4: Control & Logic Functions..................................................................................................................... 61
4.1 Auto-Reclose (79) Optional Function.................................................................................................... 61
4.1.1 Overview................................................................................................................................. 61
4.1.2 Auto Reclose sequences........................................................................................................ 62
4.1.3 Autoreclose Prot’n Menu......................................................................................................... 63
4.1.4 Autoreclose Config Menu........................................................................................................ 63
4.1.5 P/F Shots sub-menu............................................................................................................... 65
4.1.6 E/F Shots sub-menu............................................................................................................... 65

7SR11 & 7SR12 Description Of Operation
Chapter 1 Page 4 of 88 ©2017 Siemens Protection Devices Limited
4.1.7 SEF Shots sub-menu ..............................................................................................................65
4.1.8 Extern Shots sub-menu...........................................................................................................66
4.2 Manual CB Control ................................................................................................................................68
4.3 Circuit Breaker.......................................................................................................................................69
4.4 Quick Logic............................................................................................................................................71
Section 5: Supervision Functions ...........................................................................................................................73
5.1 Circuit Breaker Failure (50BF)...............................................................................................................73
5.2 VT Supervision (60VTS) – 7SR1205 & 7SR1206..................................................................................74
5.3 CT Supervision (60CTS)........................................................................................................................76
5.3.1 60CTS for 7SR11 (60CTS-I for 7SR12)...................................................................................76
5.3.2 60CTS for 7SR12....................................................................................................................76
5.4 Broken Conductor (46BC) .....................................................................................................................77
5.5 Trip/ Close Circuit Supervision (74TCS & 74CCS)................................................................................78
5.6 2nd Harmonic Block/Inrush Restraint (81HBL2) phase elements only..................................................79
Section 6: Other Features ......................................................................................................................................80
6.1 Data Communications ...........................................................................................................................80
6.2 IEC 61850 Communications..................................................................................................................80
6.3 Maintenance..........................................................................................................................................80
6.3.1 Output Matrix Test...................................................................................................................80
6.3.2 CB Counters............................................................................................................................81
6.3.3 I2t CB Wear..............................................................................................................................81
6.4 General Pickup......................................................................................................................................81
6.5 Data Storage .........................................................................................................................................81
6.5.1 General....................................................................................................................................81
6.5.2 Demand...................................................................................................................................81
6.5.3 Event Records.........................................................................................................................82
6.5.4 Waveform Records..................................................................................................................82
6.5.5 Fault Records..........................................................................................................................82
6.5.6 Energy Storage - 7SR12..........................................................................................................83
6.5.7 Disk Activity Warning...............................................................................................................84
6.6 Metering.................................................................................................................................................84
6.7 Operating Mode.....................................................................................................................................85
6.8 Control Mode.........................................................................................................................................85
6.9 Real Time Clock....................................................................................................................................86
6.9.1 Time Synchronisation – Data Communication Interface..........................................................86
6.9.2 Time Synchronisation – Binary Input.......................................................................................86
6.10 Settings Groups.....................................................................................................................................86
6.11 Password Feature .................................................................................................................................87

7SR11 & 7SR12 Description Of Operation
©2017 Siemens Protection Devices Limited Chapter 1 Page 5 of 88
List of Figures
Figure 1-1 Functional Diagram of 7SR1101-1_A12-_CA0 Relay........................................................................... 11
Figure 1-2 Functional Diagram of 7SR1101-3_A12-_CA0 Relay........................................................................... 11
Figure 1-3 Functional Diagram of 7SR1103-1_A_ _-_DA0 Relay.......................................................................... 11
Figure 1-4 Functional Diagram of 7SR1103-3_A_ _-_DA0 Relay.......................................................................... 12
Figure 1-5 Connections Diagram for 7SR11 Relay................................................................................................ 13
Figure 1-6 Functional Diagram of 7SR1204-2_A12-_CA0 Relay........................................................................... 15
Figure 1-7 Functional Diagram of 7SR1204-4_A12-_CA0 Relay........................................................................... 15
Figure 1-8 Functional Diagram of 7SR1205-2_A_ _-_DA0 Relay.......................................................................... 15
Figure 1-9 Functional Diagram of 7SR1205-4_A_ _-_DA0 Relay.......................................................................... 16
Figure 1-10 Connections Diagram for 7SR12 Relay.............................................................................................. 17
Figure 2-1 E4 relay shown withdrawn.................................................................................................................... 19
Figure 2-2 Rear view of Relay (E6 Case with optional IEC61850 module)............................................................ 20
Figure 2-3 Earth connection Symbol...................................................................................................................... 20
Figure 2-4 Relay with standard transparent cover (E6 Case with optional IEC61850 module).............................. 20
Figure 2-5 Relay with transparent cover and push buttons.................................................................................... 21
Figure 2-6 Relay with Transparent cover removed (E6 Case with optional IEC61850 module)............................. 22
Figure 2-7 Close up of Relay Label........................................................................................................................ 22
Figure 2-8 Close up of Relay Identifier................................................................................................................... 23
Figure 2-9 LED Indication Label............................................................................................................................. 25
Figure 2-10 Binary Input Logic............................................................................................................................... 26
Figure 2-11 Binary Output Logic............................................................................................................................ 27
Figure 2-12 Start-up Counter Meter....................................................................................................................... 28
Figure 2-13 Unexpected Restarts Lockout Text..................................................................................................... 28
Figure 2-14 Start-up Events................................................................................................................................... 29
Figure 3-1 Logic Diagram: Directional Overcurrent Element (67) .......................................................................... 32
Figure 3-2 Logic Diagram: Instantaneous Over-current Element........................................................................... 33
Figure 3-3 Logic Diagram: Time Delayed Overcurrent Element ............................................................................ 34
Figure 3-4 Logic Diagram: Voltage Controlled Overcurrent Protection.................................................................. 35
Figure 3-5 Logic Diagram: Derived Directional Earth Fault Element...................................................................... 36
Figure 3-6 Logic Diagram: Derived Instantaneous Earth Fault Element................................................................ 37
Figure 3-7 Logic Diagram: Derived Time Delayed Earth Fault Protection.............................................................. 38
Figure 3-8 Logic Diagram: Measured Directional Earth Fault Protection............................................................... 39
Figure 3-9 Logic Diagram: Measured Instantaneous Earth-fault Element.............................................................. 40
Figure 3-10 Logic Diagram: Measured Time Delayed Earth Fault Element (51G)................................................. 41
Figure 3-11 Logic Diagram: SEF Directional Element (67SEF)............................................................................. 43
Figure 3-12 Logic Diagram: 7SR11 SEF Instantaneous Element.......................................................................... 43
Figure 3-13 Logic Diagram: 7SR12 SEF Instantaneous Element.......................................................................... 44
Figure 3-14 Logic Diagram: 7SR11 SEF Time Delayed Element (51SEF)............................................................ 45
Figure 3-15 Logic Diagram: 7SR12 SEF Time Delayed Element (51SEF)............................................................ 46
Figure 3-16 Logic Diagram: High Impedance REF (64H) ...................................................................................... 47
Figure 3-17 Logic Diagram: Cold Load Settings (51c)........................................................................................... 48
Figure 3-18 Logic Diagram: Negative Phase Sequence Overcurrent (46NPS)...................................................... 49
Figure 3-19 Logic Diagram: Phase Current Inputs Undercurrent Detector (37)..................................................... 50
Figure 3-20 Logic Diagram: Earth Current Inputs Undercurrent Detector (37G).................................................... 50
Figure 3-21 Logic Diagram: Sensitive Earth Current Inputs Undercurrent Detector (37SEF)................................ 50
Figure 3-22 Logic Diagram: Thermal Overload Protection (49) ............................................................................. 51
Figure 3-23 Logic Diagram: 50G Line Check Elements (50G LC)......................................................................... 52
Figure 3-24 Logic Diagram: 50SEF Line Check Elements (50SEF LC)................................................................. 52
Figure 3-25 Logic Diagram: 50 Line Check Elements (50LC)................................................................................ 52
Figure 3-26 Logic Diagram: Arc Flash Detector (50 AFD) ..................................................................................... 53

7SR11 & 7SR12 Description Of Operation
Chapter 1 Page 6 of 88 ©2017 Siemens Protection Devices Limited
Figure 3-27 Logic Diagram: Under/Over Voltage Elements (27/59).......................................................................54
Figure 3-28 Logic Diagram: NPS Overvoltage Protection (47)...............................................................................55
Figure 3-29 Logic Diagram: Neutral Overvoltage Element (59N) ...........................................................................56
Figure 3-30 Logic Diagram: Under/Over Frequency Detector (81)......................................................................57
Figure 3-31 Logic Diagram: Power Protection (32).............................................................................................58
Figure 3-32 Logic Diagram: Sensitive Power Protection (32S)............................................................................59
Figure 3-33 Logic Diagram: Power Factor Protection (55)..................................................................................60
Figure 4-1 Typical AR Sequence with 3 Inst and 1 Delayed trip.............................................................................63
Figure 4-2 Basic Auto-Reclose Sequence Diagram...............................................................................................67
Figure 4-3 Logic Diagram: Circuit Breaker Status ..................................................................................................70
Figure 4-4 Sequence Diagram: Quick Logic PU/DO Timers (Counter Reset Mode Off).........................................72
Figure 5-1 Logic Diagram: Circuit Breaker Fail Protection (50BF)..........................................................................73
Figure 5-2 Logic Diagram: VT Supervision Function (60VTS)................................................................................75
Figure 5-3 Logic Diagram: CT Supervision Function (60CTS) – 7SR11.................................................................76
Figure 5-4 Logic Diagram: CT Supervision Function (60CTS) – 7SR12.................................................................77
Figure 5-5 Logic Diagram: Broken Conductor Function (46BC) .............................................................................77
Figure 5-6 Logic Diagram: Trip Circuit Supervision Feature (74TCS) ....................................................................78
Figure 5-7 Logic Diagram: Close Circuit Supervision Feature (74CCS).................................................................78
Figure 5-8 Functional Diagram for Harmonic Block Feature (81HBL2) ..................................................................79
Figure 6-1 Energy Direction Convention.................................................................................................................83
List of Tables
Table 1-1 7SR11 Ordering Options....................................................................................................................9
Table 1-2 7SR12 Ordering Options..................................................................................................................14
Table 2-1 Summary of 7SR1 Relay Configurations..........................................................................................18
Table 2-2 Power Supply Unit (PSU) options....................................................................................................21
Table 6-1 Operating Mode ...............................................................................................................................85
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]

7SR11 & 7SR12 Description Of Operation
©2017 Siemens Protection Devices Limited Chapter 1 Page 7 of 88
c
start
trip
Elem Starter
Elem Inhibit
Elem Reset Delay
c
Forward
Reverse
Elem Char Dir
Non-Dir
L1 Dir Blk
PhaseAFwd
Binary input signal
visible to user
Binary Output visible to user
Digital signal not visible to
user, to/from another element
List of settings associated with a specific
function
Appropriate list is TRUE when setting
selected.
Digital signal not visible to
user, internal to this element
IL1
Analogue signal with signal
description
Common setting for multiple functions
c
start
trip
Function.
Individual functions are enabled when
associated control input (c) is TRUE.
Common control input (c) for multiple
functions. All functions are enabled
when control input is TRUE.
&
And Gate
(2 inputs shown)
≥1
Or Gate
(3 inputs shown)INST.
EVENT
EVENT: IEC, Modbus or DNP
Where applicable
Relay instrument
=1
Exclusive Or (XOR) Gate
(3 inputs shown)

7SR11 & 7SR12 Description Of Operation
Chapter 1 Page 8 of 88 ©2017 Siemens Protection Devices Limited
Section 1: Introduction
This manual is applicable to the following relays:
•7SR11 Overcurrent and Earth Fault Relay
•7SR12 Directional Overcurrent and Directional Earth Fault Relay
The ‘Ordering Option’ Tables summarise the features available in each model
General Safety Precautions
It is the responsibility of the user to ensure that the equipment is installed, operated and used for its intended
function in the manner specified by the manufacturer. If this is not the case, then any safety protection provided
by the equipment may be impaired.
The equipment shall be isolated or disconnected from hazardous live voltage before access to potentially
hazardous live parts is affected.
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.
External Resistors
Where external resistors are connected to the relay circuitry, these may present a danger of electric
shock or burns, if touched.
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.
Fibre Optic Communication
Where fibre optic communication ports are fitted, the lasers are Class 1 devices but recommend they
should not be viewed directly.
!
!
!
!

7SR11 & 7SR12 Description Of Operation
©2017 Siemens Protection Devices Limited Chapter 1 Page 9 of 88
Table 1-1 7SR11 Ordering Options
Product description
Variants
OrderNo.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Nondirectional O/C Relay (Argus)
7
S
R
1
1
0
□
-
□
□
A
□
□
-
□
□
A
0
Overcurrentand earth fault
Protection relay
Protection Product
Overcurrent –Non Directional
1
Housing I/O and Fascia
1 CT,3BinaryInputs/5BinaryOutputs,10LEDs
1
1
C
4 CT,3BinaryInputs/5BinaryOutputs,10LEDs
2
A/C/D
4 CT,6BinaryInputs/8BinaryOutputs, 10 LEDs
3
C/D
4 CT,4Binary Inputs/ 8Binary Outputs,10 LEDs
8)
7
C/D
Measuring Input
1/5 A,50/60Hz
1)
1
A/C/D
1/5 A,50/60Hz with SEF Input
2)
3
C/D
Auxiliary voltage
PSU Rated: 80-250VDC / 115V AC
6)
. Binary input threshold 19V DC (Rated: 24-250V DC / 115V AC)
G
PSU Rated: 80-250V DC. Binary input threshold 88VDC (Rated: 110-250V DC)
H
PSU Rated: 24-60V DC. Binary input threshold 19V DC (Rated: 24-250VDC)
J
PSU Rated: 24-250V DC / 100-230V AC. BI threshold 19V DC (Rated: 24-250V DC / 100-120V AC)
M
PSU Rated: 24-250V DC / 100-230V AC. BI threshold 88V DC (Rated: 110-250V DC)
N
Communication Interface
Standard version – included inall models, USBfrontport,RS485 rear port (E4 Case)
1
2
Standard version – plus additional rear electrical Ethernet RJ45 (x2), E6 Case
7)
7
7
C/D
Standard version – plus additional rear optical Ethernet duplex (x2), E6 Case
7 )
8
7
C/D
Protocol
IEC 60870-5-103 Modbus RTU and DNP3 (user selectable)
2
IEC 60870-5-103 ModbusRTU, DNP3 and IEC 61850 (user selectable settings)
7)
7
RelayCover
Standard Version – No Push Buttons
1
PushButtons– Down and Right Arrows
2
Protection Function Packages
Basic version
5)
A
46BC
3)
Broken conductor/load unbalance
50
3)
Instantaneous phase fault overcurrent
50BF
3)
Circuit breaker fail
50G/50N Instantaneousearth fault
51
3)
Time delayedphase fault overcurrent
51G/51N Time delayed earth fault
60CTS
3)
CT Supervision
64H High impedance REF
74T&C Trip & Close circuit supervision
86 Hand reset contacts
Standard version
C
37 Undercurrent
46BC
3)
Broken conductor/load unbalance
46NPS
3)
Negativephasesequence overcurrent
49
3)
Thermal overload
50
3)
Instantaneousphasefaultovercurrent
50AFD Arc Flash Detection
50BF
3)
Circuit breaker fail
50G/50N Instantaneousearth fault
50SEF
2)
Instantaneous sensitive earth fault
51
3)
Timedelayedphasefaultovercurrent
51G/51N Time delayed earth fault
51SEF
2)
Time delayed sensitive earth fault
60CT
3)
CT Supervision
64H High Impedance REF
74T/CC Trip andClose circuitsupervision
81HBL2
4)
2
nd
harmonic block/inrush restraint
51C
3)
Cold load pickup
86 Hand reset contacts
Programmable logic
(continued on next page)

7SR11 & 7SR12 Description Of Operation
Chapter 1 Page 10 of 88 ©2017 Siemens Protection Devices Limited
Product description
Variants
Order No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Nondirectional O/C Relay (Argus)
7
S
R
1
1
0
-
A
-
A
0
continued from previous page
Standard version – plus
D
79 Autoreclose
Additional Functionality
No Additional Functionality
A
1) 4CT is configured as 3PF + EF
2) 4CT is configured as 3PF + SEF/REF.
3) Functions only available in 4CT relay
4) Not available on SEF input
5) Protection function package ordering option Ais only available on hardware variant 7SR1102-1XA12-XAA0- 4CT 3BI 5BO
6) AC 115 V supported by devices with hardware version CC or later
7) E4 case is standard, E6 case is required if IEC61850 model ordered
8) 4 Binary Input variant provides segregated Binary Outputs without a common terminal

7SR11 & 7SR12 Description Of Operation
©2017 Siemens Protection Devices Limited Chapter 1 Page 11 of 88
7SR1101-1_A12-_CA0
37
(x2)
I(EF)
74
CCS
(x3)
50G
(x2)
51G
(x2) 64H 81H
BL2
74
TCS
(x3)
86
Figure 1-1 Functional Diagram of 7SR1101-1_A12-_CA0 Relay
37
(x2)
I(SEF)
50
SEF
(x4)
51
SEF
(x4) 64H
7SR1101-3_A12-_CA0
74
CCS
(x3)
74
TCS
(x3)
86
Figure 1-2 Functional Diagram of 7SR1101-3_A12-_CA0 Relay
7SR1103-1_A12-_DA0
46
BC
46
NPS
(x2)
37
(x2)49 50 BF
IL1
37
(x2) 49 50 BF
IL2
37
(x2) 49 50 BF
IL3
60
CTS
I4
50
(x2)
50
AFD
(x2)
50N
(x2)
50
(x2)
50
(x2)
50
AFD
(x2)
50
AFD
(50)
51N
(x2)
50G
(x2)
51G
(x2)
50
BF
79
NOTE:
The use of some functions
are mutually exclusive
64H 81H
BL2
51c
74
CCS
(x3)
74
TCS
(x3)
37
86
46
BC
46
NPS
(x2)
60
CTS
51
(x2)
51
(x2)
51
(x2)
51N
(x2)
81H
BL2
Figure 1-3 Functional Diagram of 7SR1103-1_A_ _-_DA0 Relay

7SR11 & 7SR12 Description Of Operation
Chapter 1 Page 12 of 88 ©2017 Siemens Protection Devices Limited
7SR1103-3_A12-_DA0
46
BC
46
NPS
(x2)
37
(x2) 49 50
BF
IL1
37
(x2) 49 50 BF
IL2
37
(x2) 49 50 BF
IL3
60
CTS
I4
50
(x2)
50
AFD
(x2)
50N
(x2)
50
(x2)
50
(x2)
50
AFD
(x2)
50
AFD
(50)
51N
(x2)
50
SEF
(x2)
51
SEF
(x2)
50
BF
79
NOTE:
The use of some functions
are mutually exclusive
64H 81H
BL2
51c
74
CCS
(x3)
74
TCS
(x3)
37
86
46
BC
46
NPS
(x2)
60
CTS
51
(x2)
51
(x2)
51
(x2)
51N
(x2)
81H
BL2
Figure 1-4 Functional Diagram of 7SR1103-3_A_ _-_DA0 Relay

7SR11 & 7SR12 Description Of Operation
©2017 Siemens Protection Devices Limited Chapter 1 Page 13 of 88
BO 1
GND.
BI 1
A
RS485
Screen
B
Term.
+ve
-ve
+ve
-ve
IL1
22
24
28
2
4
BI 2
+ve
-ve
6
8
BI 3
+ve
-ve
10
12
14
16
18
20
IL2
IL3
IL4
25
26
27
28
BO 2
6
5
4
1
2
3
BO 3
8
7
BO 4
10
9
BO 5
12
11
1A
5A
13
14
15
16
1A
5A
17
18
19
20
1A
5A
21
22
23
24
1A
5A
AB
12
27 28
1 2
27 28
A
B
Shows contacts internal to relay case
assembly.
Contacts close when the relay chassis is
withdrawn from case
NOTES
BI = Binary Input
BO = Binary Output
Items shown in BOLD are ordering options
Rear View
Arrangement of terminals and modules
BI 4
+ve 3
BI 5
+ve 5
BI 6
+ve
-ve
7
1
BO 7
11
13
BO 8
15
9
BO 6
Data
Comms
(optional)
BI 4
+ve 3
-ve 1
15
13
BO 8
11
9
BO 7
7
5
BO 6
Alternative 4BI 8BO Segregated BO
option without common connection
Figure 1-5 Connections Diagram for 7SR11 Relay

7SR11 & 7SR12 Description Of Operation
Chapter 1 Page 14 of 88 ©2017 Siemens Protection Devices Limited
Table 1-2 7SR12 Ordering Options
Product description
Variants
OrderNo.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Directional O/C
Relay (Argus)
7
S
R
1
2
0
-
A
-
A
0
Directional
overcurrent
and earth fault
protection relay
Protection Product
Overcurrent – Directional
2
Housing I/O and Fascia
1CT,3VT,3BinaryInputs/5BinaryOutputs,10LEDs
4
1
C
4CT,3VT,3BinaryInputs/5BinaryOutputs,10LEDs
5
4CT,3VT,6BinaryInputs/8BinaryOutputs,10LEDs
6
4CT,3VT,4BinaryInputs/8 Binary Outputs,10LEDs
7)
8
Measuring Input
1/5 A,40 to160 V,50/60Hz
1)
2
1/5 A, 40 to 160 V, 50/60Hz with SEF Input
2)
4
Auxiliary voltage
PSU Rated: 80-250VDC / 115V AC
6)
. Binary input threshold 19V DC (Rated: 24-250V DC / 115V AC)
G
PSU Rated: 80-250V DC. Binary input threshold 88V DC (Rated: 110-250V DC)
H
PSU Rated: 24-60V DC. Binary input threshold 19V DC (Rated: 24-250VDC)
J
PSU Rated: 24-250V DC / 100-230V AC. BI threshold 19V DC (Rated: 24-250V DC / 100-120VAC)
M
PSU Rated: 24-250V DC / 100-230V AC. BI threshold 88V DC (Rated: 110-250V DC)
N
Communication Interface
Standard version – included in all models, USB front port, RS485 rear port (E4 Case)
1
2
Standard version – plus additional rear electrical Ethernet RJ45 (x2), E6Case
6)
7
7
Standard version – plus additional rear optical Ethernet duplex (x2), E6 Case
6 )
8
7
Protocol
IEC 60870-5-103,Modbus RTU and DNP3 (user selectable)
2
IEC 60870-5-103 Modbus RTU,DNP3 and IEC61850 (user selectable settings)
7)
7
RelayCover
Standard Version – No Push Buttons
1
PushButtons – Down and Right Arrows
2
Protection Function Packages
Standard version – Included in all models
C
27/59 Under/overvoltage
32
3)
Power
32S
8)
Sensitive Power
37 Undercurrent
46BC
3)
Broken conductor/load unbalance
46NPS
3)
Negative phase sequence overcurrent
47 Negative phase sequence voltage
49
3)
Thermal overload
50AFD Arc Flash Detection
50BF
3)
Circuit breaker fail
51V
3)
Voltage controlled overcurrent
55
3)
Power Factor
59N Neutral voltage displacement
60CTS
3)
CT supervision
60VTS
3)
VT supervision
64H High Impedance REF
67/50 Directional instantaneous phase fault overcurrent
67/50G 67/50N Directional instantaneous earth fault
67/50SEF
2)
Instantaneous sensitive earth fault
67/51 Directional time delayed phase faultovercurrent
67/51G 67/51N Directional time delayed earth fault
67/51/SEF
2)
Time delayed sensitive earth fault
81HBL2
4)
2nd harmonic block/inrush restraint
74T/CC Trip & Close circuit supervision
51C
3)
Cold load pickup
81U/0 Under/Over Frequency
86 Hand reset contacts
Programmable logic
Standard version – plus
D
79 Autoreclose
Additional Functionality
No Additional Functionality
A
1) 4CT is configured as 3PF + EF
2) 4CT is configured as 3PF + SEF/REF
3) Functions only available in 4CT relay
4) Not available on SEF input
5) AC 115 V supported by devices with hardware version CC or later
6) E4 case is standard, E6 case is required if IEC61850 model ordered
7) 4 Binary Input variant provides segregated Binary Outputs without a common terminal
8) Functions only available in 4CT SEF relay

7SR11 & 7SR12 Description Of Operation
©2017 Siemens Protection Devices Limited Chapter 1 Page 15 of 88
7SR1204-2_A12-_CA0
VL1
VL2
VL3
37
(x2)
I1
67/
50G
(x4)
67/
51G
(x4)
27
59
(x4)
27
59
(x4)
27
59
(x4)
59N
(x2)
74
CCS
(x3)
74
TCS
(x3)
64H
86
81
(x4)
81H
BL2
Figure 1-6 Functional Diagram of 7SR1204-2_A12-_CA0 Relay
7SR1204-4_A12-_CA0
VL1
VL2
VL3
37
(x2)
I1
67/50
SEF
(x4)
67/51
SEF
(x4)
27
59
(x4)
27
59
(x4)
27
59
(x4)
59N
(x2)
74
CCS
(x3)
74
TCS
(x3)
64H
86
81
(x4)
Figure 1-7 Functional Diagram of 7SR1204-4_A12-_CA0 Relay
7SR1205-2_A12-_DA0
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
81
(x4)
50
AFD
(x2)
50
AFD
(x2)
50
AFD
(x2)
32
(x2)
32
(x2)
32
(x2)
55
(x2)
55
(x2)
55
(x2)
Figure 1-8 Functional Diagram of 7SR1205-2_A_ _-_DA0 Relay

7SR11 & 7SR12 Description Of Operation
Chapter 1 Page 16 of 88 ©2017 Siemens Protection Devices Limited
7SR1205-4_A12-_DA0
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)
67/50
SEF
(x4)
67/51
SEF
(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
81
(x4)
50
AFD
(x2)
50
AFD
(x2)
50
AFD
(x2)
32
(x2)
32
(x2)
32
(x2)
55
(x2)
55
(x2)
55
(x2)
32S
(x2)
Figure 1-9 Functional Diagram of 7SR1205-4_A_ _-_DA0 Relay