7SR18 Installation Guide
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Contents
Document Release History ................................................................................................................................. 2
Software Revision History .................................................................................................................................. 2
Section 1: Introduction ....................................................................................................................................... 5
1.1 Packaging ......................................................................................................................................... 5
1.2 Unpacking, Storage and Handling ...................................................................................................... 5
1.3 Recommended Mounting Position ...................................................................................................... 5
1.4 Wiring................................................................................................................................................ 5
1.5 Earthing ............................................................................................................................................ 5
1.6 Ancillary Equipment ........................................................................................................................... 6
1.7 Disposal ............................................................................................................................................ 6
1.7 .1 Environmental Protection Hints ............................................................................................. 6
Section 2: Equipment Operating Conditions ........................................................................................................ 7
2.1 Current Transformer Circuits .............................................................................................................. 7
2.2 External Resistors.............................................................................................................................. 7
2.3 Fibre Optic Communication ................................................................................................................ 7
2.4 Front Cover ....................................................................................................................................... 7
Section 3: Dimensions and Panel Fixings ........................................................................................................... 8
3.1 Relay Dimensions and Weight............................................................................................................ 8
3.2 Fixings .............................................................................................................................................. 9
3.2 .1 Crimps ................................................................................................................................. 9
3.2.2 Panel Fixings ....................................................................................................................... 9
Section 4: Rear Terminal Drawings .................................................................................................................. 10
4.1 E6 Case .......................................................................................................................................... 10
Section 5: Connection/Wiring/Diagrams ............................................................................................................ 12
5.1 Wiring Diagram: 7SR18 Relay with 3BI & 5BO .................................................................................. 12
5.2 Wiring Diagram: 7SR18 Relay with 6BI & 8BO .................................................................................. 13
5.3 Wiring Diagram: 7SR18 Relay with 3BI & 5BO .................................................................................. 14
5.4 Wiring Diagram: 7SR18 Relay with 6BI & 8BO .................................................................................. 15
5.5 Typical Current Transformer Configurations ...................................................................................... 16
5.6 Voltage Transformer Configurations ................................................................................................. 19
Section 6: Data Comms Connections ............................................................................................................... 20
6.1 RS485 Connection........................................................................................................................... 20
6.2 Protection Signalling Communication Connection ............................................................................. 21
6.3 Additional (Optional) Ethernet Connection for IEC 61850 .................................................................. 21
6.4 Ethernet Network Redundancy IEC 61850 ........................................................................................ 22
6.4.1 RSTP – Rapid Spanning Tree Protocol ............................................................................... 22
6.4.2 PRP – Parallel Redundancy Protocol .................................................................................. 23
6.4.3 HSR – High Availability Seamless Redundancy Protocol ..................................................... 24
List of Figures
Figure 3.1-1 Overall Dimensions and Panel Drilling for Size E6 Epsilon Case .................................................... 8
Figure 4.1-1 E6 Case viewed from rear (Typical) ............................................................................................ 10
Figure 4.1-2 E6 Case Terminal Arrangement viewed from rear (Typical).......................................................... 11
Figure 5.1-1 Connection Diagram for Non-Directional Relay (3BI 5BO) ............................................................ 12
Figure 5.2-1 Connection Diagram for Non-Directional Relay (6BI 8BO) ............................................................ 13
Figure 5.3-1 Connection Diagram for Directional Relay (3BI 5BO) ................................................................... 14
Figure 5.4-1 Connection Diagram for Directional Relay (6BI 8BO) ................................................................... 15
Figure 6.1-1 RS485 Data Comms Connections Between Relays ..................................................................... 20
Figure 6.3-1 Ethernet connection for IEC 61850 (star connection) ................................................................... 21
Figure 6.3-2 Ethernet connection for IEC 61850 (ring connection) ................................................................... 21
Figure 6.4.1-1RSTP Ethernet Network Ring configuration ................................................................................. 22
Figure 6.4.2-1PRP Ethernet Network Configuration .......................................................................................... 23
Figure 6.4.3-1HSR Ethernet Network Ring Configuration .................................................................................. 24
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