Siemens 7SR18 Solkor - Section 2: Hardware Description; General; Table 2.1-1 Summary of 7 SR18 Relay Configuration

7SR18 Description Of Operation
Unrestricted Page 16 of 78 ©2018 Siemens Protection Devices Limited
Section 2: Hardware Description
2.1 General
The structure of the relays is based upon the Reyrolle Compact (RC) hardware platform. They are supplied in a
size E6 case (where 1 x E = width of approx. 26 mm). The hardware design provides commonality between
products and components across the Reyrolle Compact range of relays.
Table 2.1-1 Summary of 7SR18 Relay Configuration
Relay
Current
Inputs
Voltage
Inputs
Binary
Inputs
Binary
Outputs
LEDs
(Individual)
Function
Keys (each
with LED)
7SR1811-1 4 - 3 5 18 0
7SR1812-1 4 - 3 5 10 6
7SR1813-1 4 - 6 8 18 0
7SR1814-1 4 - 6 8 10 6
7SR1811-2 4 3 3 5 18 0
7SR1812-2 4 3 3 5 10 6
7SR1813-2 4 3 6 8 18 0
7SR1814-2 4 3 6 8 10 6
Relays are assembled from the following PCBs:
1) Front Fascia (order option)
CPU
9 configurable LEDs + 1 Relay Healthy LED plus 8 configurable LEDs (Option)
9 configurable LEDs + 1 Relay Healthy LED plus 6 Function Keys each with LED (Option)
2) Current Analogue / Output module
4 x Current + 5 x Binary Output (BO)
3) Voltage Analogue / Input / output module
3 x Voltage Transformer (VT) (Option)
3 x Binary Input (BI) + 3 x Binary Output (BO) (Option)
3 x Voltage Transformer (VT) + 3 x Binary Input (BI) + 3 x Binary Output (BO) (Option)
4) Power Supply
3 x Binary Input (BI) + RS485
5) Protection Signalling module
6) Communications Module (2x Electrical Ethernet for IEC 61850) or (2x Optical Ethernet for IEC 61850) (Option)