7SR11 & 7SR12 Installation Guide
7SR11 and 7SR12
Installation Guide
Document Release History
This document is issue 2012/01. The list of revisions up to and including this issue is:
2012/01
Software Maintenance
2011/06
Software Maintenance
2011/06
Added CT and VT connection information
2010/04
Amendments following PLM review
2010/02
Document reformat due to rebrand
2009/09
Revised format
2009/04
First issue
Software Revision History
2012/01
7SR11 2436H80003 R2a-2a
Software Maintenance
7SR12 2436H80004 R2a-2a
2011/06
7SR11 2436H80003 R2-2
Software Maintenance
7SR12 2436H80004 R2-2
2009/04
2436H80003R1g-1c 7SR11
First Release
3436H80004R1g-1c 7SR12
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.
©2012 Siemens Protection Devices Limited
7SR11 & 7SR12 Installation Guide
Contents
Section 1: Installation............................................................................................................................................... 3
1.1 Packaging ............................................................................................................................................... 3
1.2 Unpacking, Storage and Handling .......................................................................................................... 3
1.3 Recommended Mounting Position .......................................................................................................... 3
1.4 Wiring...................................................................................................................................................... 3
1.5 Earthing................................................................................................................................................... 3
1.6 Ancillary Equipment ................................................................................................................................ 4
1.7 Disposal .................................................................................................................................................. 4
Section 2: Equipment Operating Conditions ............................................................................................................ 5
2.1 Current Transformer Circuits................................................................................................................... 5
2.2 External Resistors ................................................................................................................................... 5
2.3 Front Cover ............................................................................................................................................. 5
Section 3: Dimensions and Panel Fixings ................................................................................................................ 6
3.1 Relay Dimensions and Weight ................................................................................................................ 6
3.2 Fixings..................................................................................................................................................... 7
3.2.1
Crimps....................................................................................................................................... 7
3.2.2
Panel Fixings ............................................................................................................................ 7
Section 4: Rear Terminal Drawings ......................................................................................................................... 8
4.1 E4 Case .................................................................................................................................................. 8
Section 5: Connection/Wiring/Diagrams ................................................................................................................ 10
5.1 Wiring Diagram: 7SR1101 EF Relay with 3BI & 5BO............................................................................ 10
5.2 Wiring Diagram: 7SR1102 OC/EF Relay with 3BI & 5BO ..................................................................... 11
5.3 Wiring Diagram: 7SR1103 OC/EF Relay with 6 BI & 8BO .................................................................... 12
5.4 Wiring Diagram: 7SR1204 Directional EF Relay with 3BI & 5BO.......................................................... 13
5.5 Wiring Diagram: 7SR1205 Directional OC/EF Relay with 3BI & 5BO ................................................... 14
5.6 Wiring Diagram: 7SR1206 Directional OC/EF Relay with 6BI & 8BO ................................................... 15
5.7 Current Transformer Configurations...................................................................................................... 16
5.8 Voltage Transformer Configurations ..................................................................................................... 21
Section 6: Data Comms Connections .................................................................................................................... 22
6.1 RS485 Connection ................................................................................................................................ 22
List of Figures
Figure 3.1-1
Figure 4.1-1
Figure 4.1-2
Figure 5.1-1
Figure 5.2-1
Figure 5.3-1
Figure 5.4-1
Figure 5.5-1
Figure 5.6-1
Figure 6.1-1
Overall Dimensions and Panel Drilling for Size E4 Epsilon Case...................................................... 6
E4 Case viewed from rear ................................................................................................................. 8
E4 Case Terminal Arrangement viewed from rear ............................................................................ 9
7SR1101 Connection Diagram........................................................................................................ 10
7SR1102 Connection Diagram........................................................................................................ 11
7SR1103 Connection Diagram........................................................................................................ 12
7SR1204 Connection Diagram........................................................................................................ 13
7SR1205 Connection Diagram........................................................................................................ 14
7SR1206 Connection Diagram ......................................................................................................... 15
RS485 Data Comms Connections Between Relays ........................................................................ 22
©2012 Siemens Protection Devices Limited
Chapter 5 Page 2 of 22
7SR11 & 7SR12 Installation Guide
Section 1: Installation
1.1
Packaging
Relays are supplied in packaging designed to mechanically protect them while in both transit and
storage.
This packaging should be recycled where systems exist, or disposed of in a manner which does
not provide a threat to health or the environment. All laws and regulations specific to the country
of disposal should be adhered to.
1.2
Unpacking, Storage and Handling
On receipt remove the relay from the container in which it was received and inspect it for obvious damage. It
is recommended that the relay not be removed from its case.
If damage has been sustained a claim should be immediately be made against the carrier, also inform
Siemens Protection Devices Limited, and the nearest Siemens agent.
When not required for immediate use, Relays should be stored in their original packaging. The place of
storage should be dry and free from dust. It should also not exceed the storage temperature and
humidity limits of the Relay; given in the Performance Specification of this manual.
The relay contains static sensitive devices, which are susceptible to damage due to static discharge. The
relay’s electronic circuits are protected from damage by static discharge when the relay is housed in its
case.
There can be no requirement to disassemble any relay, since there are no user serviceable parts in the
relay. If any modules have been tampered with, then the guarantee will be invalidated. Siemens Protection
Devices Limited reserves the right to charge for any subsequent repairs.
1.3
Recommended Mounting Position
The relay uses a liquid crystal display (LCD) for programming and operation. The LCD has a vertical
viewing angle of ± 30˚ and is back–lit. However, the best viewing position is at eye level, and this is
particularly important given its control features.
The relay should be mounted on the circuit breaker (or protection panel) to allow the operator the best
access to the relay functions
1.4
Wiring
The product should be wired according to the scheme requirements, with reference to the appropriate wiring
diagram.
1.5
Earthing
Terminal 28 of the PSU (Power Supply Unit) should be solidly earthed by a direct connection to the panel
earth. The Relay case earth stud connection should be connected to terminal 28 of the PSU.
It is normal practice to additionally 'daisy chain' together the case (safety) earths of all the Relays installed in
a panel to prevent earth current loops posing a risk to personnel.
©2012 Siemens Protection Devices Limited
Chapter 5 Page 3 of 22
7SR11 & 7SR12 Installation Guide
1.6
Ancillary Equipment
The relay can be interrogated locally or remotely. For local interrogation a portable PC with suitable version
of MS Windows (2000 SP4 or XP SP2)and Reydisp Evolution™ s/w (Latest Version available 32 bit) using
USB port situated on front of the relay.
1.7
Disposal
The Relay should be disposed of in a manner which does not provide a threat to health or the
environment. All laws and regulations specific to the country of disposal should be adhered to.
The relays and protection systems manufactured under the Reyrolle brand currently do not come
within the scope of either the European WEEE or RoHS directives as they are equipment making
up a fixed installation.
©2012 Siemens Protection Devices Limited
Chapter 5 Page 4 of 22
7SR11 & 7SR12 Installation Guide
Section 2: Equipment Operating Conditions
2.1
!
2.2
!
2.3
!
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.
©2012 Siemens Protection Devices Limited
Chapter 5 Page 5 of 22
7SR11 & 7SR12 Installation Guide
Section 3: Dimensions and Panel Fixings
3.1
Relay Dimensions and Weight
Relays are supplied in the modular size E4
The following drawing which is available from the website gives panel cut-out and mounting details.
Figure 3.1-1 Overall Dimensions and Panel Drilling for Size E4 Epsilon Case
Hardware Model
7SR1101
7SR1102
7SR1103
7SR1204
7SR1205
7SR1206
©2012 Siemens Protection Devices Limited
Net Weight Kg
2.7
3.2
3.2
2.7
3.2
3.2
Chapter 5 Page 6 of 22
7SR11 & 7SR12 Installation Guide
3.2
Fixings
3.2.1 Crimps
Ring tongued crimps with 90˚ bend are recommended.
3.2.2 Panel Fixings
Typical mounting screw kit per Relay
Consists of 4 off M4x10mm Screws
4 off M4 Nuts
4 off M4 Lock Washer
Typical rear terminal block fixing kit (1kit per terminal block fitted to relay) Consists of:
28 off M4, 8mm Screws
28 off M4 Lock Washer
©2012 Siemens Protection Devices Limited
Chapter 5 Page 7 of 22
7SR11 & 7SR12 Installation Guide
Section 4: Rear Terminal Drawings
4.1
E4 Case
Figure 4.1-1 E4 Case viewed from rear
Notes
1) Recommended terminations are pre-insulated and must be crimped using approved tooling.
2) RS485 (Block ”B” Terms 14, 16, 18, 20) connection to this communication facility is by screened, twisted
pair cable. On site when wiring other facilities ensure that these terminals are not obscured by other wiring
runs. Cable should be RS485 compliant.
©2012 Siemens Protection Devices Limited
Chapter 5 Page 8 of 22
7SR11 & 7SR12 Installation Guide
Figure 4.1-2 E4 Case Terminal Arrangement viewed from rear
©2012 Siemens Protection Devices Limited
Chapter 5 Page 9 of 22
7SR11 & 7SR12 Installation Guide
Section 5: Connection/Wiring/Diagrams
5.1
Wiring Diagram: 7SR1101 EF Relay with 3BI & 5BO
2
4
6
8
10
12
+ve
BI 1
-ve
+ve
BI 2
-ve
+ve
14
A
16
GND
18
B
20
Term.
22
24
1
BI 3
-ve
2
2
B
A
PSU
Analogue
27
+ve
1
28
27
28
Rear View
Arrangement of terminals and modules
-ve
28
GND.
B
NOTES
3
BO 1
1
BI =
BO =
Binary Input
Binary Output
2
4
BO 2
6
5
BO 3
BO 4
25
1A
26
27
28
5A
BO 5
Shows contacts internal to relay case
assembly.
Contacts close when the relay chassis is
withdrawn from case
8
7
10
9
12
11
IL4
A
Figure 5.1-1 7SR1101 Connection Diagram
©2012 Siemens Protection Devices Limited
Chapter 5 Page 10 of 22
7SR11 & 7SR12 Installation Guide
Wiring Diagram: 7SR1102 OC/EF Relay with 3BI & 5BO
2
4
6
8
10
12
+ve
BI 1
-ve
+ve
BI 2
-ve
+ve
14
A
16
GND
18
B
20
Term.
22
24
1
BI 3
-ve
2
RS485
5.2
2
B
A
PSU
Analogue
27
+ve
1
28
27
28
Rear View
Arrangement of terminals and modules
-ve
28
GND.
13
NOTES
1A
14
15
B
5A
3
BO 1
IL1
5A
BO 2
23
BO 3
1A
22
5A
IL3
BO 4
24
25
1A
26
27
28
5A
6
5
IL2
20
21
Binary Input
Binary Output
4
1A
18
19
BI =
BO =
2
16
17
1
BO 5
Shows contacts internal to relay case
assembly.
Contacts close when the relay chassis is
withdrawn from case
8
7
10
9
12
11
IL4
A
Figure 5.2-1 7SR1102 Connection Diagram
©2012 Siemens Protection Devices Limited
Chapter 5 Page 11 of 22
7SR11 & 7SR12 Installation Guide
5.3
Wiring Diagram: 7SR1103 OC/EF Relay with 6 BI &
8BO
2
4
6
8
10
12
+ve
+ve
-ve
BI 2
BI 5
BI 3
BI 6
-ve
+ve
+ve
-ve
GND
18
B
3
1
5
7
1
2
9
A
20
-ve
+ve
16
24
BI 4
+ve
14
22
BI 1
Term.
BO 6
11
BO 7
13
BO 8
15
2
B
A
PSU
Analogue
27
+ve
1
28
27
28
Rear View
Arrangement of terminals and modules
-ve
28
GND.
13
NOTES
1A
14
15
B
5A
3
BO 1
IL1
5A
BO 2
23
BO 3
1A
22
5A
IL3
BO 4
24
25
1A
26
27
28
5A
6
5
IL2
20
21
Binary Input
Binary Output
4
1A
18
19
BI =
BO =
2
16
17
1
BO 5
Shows contacts internal to relay case
assembly.
Contacts close when the relay chassis is
withdrawn from case
8
7
10
9
12
11
IL4
A
Figure 5.3-1 7SR1103 Connection Diagram
©2012 Siemens Protection Devices Limited
Chapter 5 Page 12 of 22
7SR11 & 7SR12 Installation Guide
5.4
Wiring Diagram: 7SR1204 Directional EF Relay with
3BI & 5BO
Figure 5.4-1 7SR1204 Connection Diagram
©2012 Siemens Protection Devices Limited
Chapter 5 Page 13 of 22
7SR11 & 7SR12 Installation Guide
5.5
Wiring Diagram: 7SR1205 Directional OC/EF Relay
with 3BI & 5BO
Figure 5.5-1 7SR1205 Connection Diagram
©2012 Siemens Protection Devices Limited
Chapter 5 Page 14 of 22
7SR11 & 7SR12 Installation Guide
5.6
Wiring Diagram: 7SR1206 Directional OC/EF Relay
with 6BI & 8BO
Figure 5.6-1 7SR1206 Connection Diagram
©2012 Siemens Protection Devices Limited
Chapter 5 Page 15 of 22
7SR11 & 7SR12 Installation Guide
Current Transformer Configurations
©2012 Siemens Protection Devices Limited
S2
S1
P1
P2
S2
S1
P1
P2
S2
S1
P1
S1
S2
64H – Measured
Restricted E/F
P2
IREF
P1
50SEF/51SEF Measured
Sensitive E/F
P2
ISEF
Direction of power flow
In the forward direction
50G/51G Measured E/F
Connection
Direction of power flow
In the forward direction
Description
Direction of power flow
In the forward direction
Relay Current
Configuration
Setting
In
Direction of power flow
In the forward direction
5.7
Chapter 5 Page 16 of 22
Selects 1 or 5A
CT ratio for
primary meters
S1
P1
A13
S2
CT/VT CONFIG:
Phase Current
Input
Phase CT Ratio
50/51 - Phase
Overcurrent
50N/51N Derived E/F
1A
A14
A15
5A
Ia
A16
P2
Ia, Ib, Ic
In
Direction of power flow
In the forward direction
7SR11 & 7SR12 Installation Guide
A
A17
B
C
1A
A18
A19
5A
Ib
A20
A21
1A
A22
A23
5A
Ic
A24
A25
1A
A26
A27
5A
Ig
A28
©2012 Siemens Protection Devices Limited
Chapter 5 Page 17 of 22
S1
P1
A13
S2
CT/VT CONFIG:
Phase Current
Input
Phase CT Ratio
Earth Current
Input
Earth CT Ratio
50/51 - Phase
Overcurrent
50N/51N Derived E/F
50G/51G Measured E/F
1A
A14
A15
5A
Ia
A16
P2
Ia, Ib, Ic
In
Ig
Direction of power flow
In the forward direction
7SR11 & 7SR12 Installation Guide
A
A17
B
C
A18
A19
Selects 1 or 5A
CT ratio for
primary meters
1A
5A
Ib
A20
A21
1A
A22
A23
5A
Ic
A24
A25
1A
A26
A27
5A
Ig
A28
A13
1A
A14
A15
5A
Ia
A16
A17
1A
A18
A19
5A
Ib
A20
A21
1A
A22
A23
5A
Ic
A24
A25
1A
A26
A27
5A
Ig
A28
A
©2012 Siemens Protection Devices Limited
B
C
Chapter 5 Page 18 of 22
7SR11 & 7SR12 Installation Guide
Ia, Ib, Ic
In
ISEF
CT/VT CONFIG:
Phase Current
Input
Phase CT Ratio
Phase
Overcurrent
Derived E/F
Measured SEF
A13
1A
A14
A15
5A
Ia
A16
Selects 1 or 5A
CT ratio for
primary meters
A17
A
B
C
1A
A18
A19
5A
Ib
A20
A21
1A
A22
A23
5A
Ic
A24
A25
1A
A26
A27
5A
ISEF
A28
A13
1A
A14
A15
5A
Ia
A16
A17
1A
A18
A19
5A
Ib
A20
A21
1A
A22
A23
5A
Ic
A24
A25
1A
A26
A27
5A
ISEF
A28
A
©2012 Siemens Protection Devices Limited
B
C
Chapter 5 Page 19 of 22
7SR11 & 7SR12 Installation Guide
©2012 Siemens Protection Devices Limited
S2
S1
P1
Selects 1 or 5A
CT ratio for
primary meters
P2
CT/VT CONFIG:
Phase Current
Input
Phase CT Ratio
Phase
Overcurrent
Derived E/F
Measured
Standby E/F
Direction of power flow
In the forward direction
Ia, Ib, Ic
In
Ig
Chapter 5 Page 20 of 22
7SR11 & 7SR12 Installation Guide
5.8
Voltage Transformer Configurations
Relay Voltage
Configuration Setting
Van, Vbn, Vcn
Description
Connection
67 & 67N & 67G
47, 59N, 27/59 & 81
Phase – Neutral
Phase – Phase
Calculated
NPS
ZPS
Va
B17
B19
Vb
B21
B23
A
B
C
Vc
B25
B27
Va, Vb, Vc
67 & 67N & 67G
47,27/59 & 81
Phase – Neutral
Phase – Phase
Calculated
NPS
No ZPS available
Va
B17
B19
Vb
B21
B23
A
B
C
Vc
B25
B27
Vab, Vbc, 3Vo
67 & 67N & 67G
47, 59N, 27/59 & 81
Phase – Neutral
Calculated
Phase – Phase
Phase Vca
Calculated
NPS
ZPS
©2012 Siemens Protection Devices Limited
Chapter 5 Page 21 of 22
7SR11 & 7SR12 Installation Guide
Section 6: Data Comms Connections
6.1
RS485 Connection
The RS485 communication port is located on the rear of the relay and can be connected using a suitable RS485
120Ω screened twisted pair cable.
The RS485 electrical connection can be used in a single or multi-drop configuration. The RS485 master must
support and use the Auto Device Enable (ADE) feature.
The last device in the connection must be terminated correctly in accordance with the master driving the
connection. A terminating resistor is fitted in each relay, when required this is connected in circuit using an
external wire loop between terminals 18 and 20 of the power supply module.
Up to 64 relays can be connected to the RS485 bus.
The RS485 data communications link with a particular relay will be broken if the relay element is withdrawn from
the case, all other relays will still communicate.
16
14
B
GND
A
Term.
18
A
20
14
B
Term.
GND
20
A
16
14
B
GND
18
16
Term.
18
20
Figure 6.1-1 RS485 Data Comms Connections Between Relays
©2012 Siemens Protection Devices Limited
Chapter 5 Page 22 of 22