Section 2: Hardware Description; General; Table 2.1-1 Summary Of Overcurrent Relay Configurations - Siemens Argus 7SR21 Technical Manual

Section 2: Hardware Description

2.1

General

The structure of the relay is based upon the Multi-function hardware platform. The relays are supplied in either
size E6 or size E8 cases (where 1 x E = width of 26 mm). The hardware design provides commonality between
products and components across the Multi-function range of relays.
Table 2.1-1 Summary of Overcurrent Relay Configurations
Relay Current
Inputs
7SR2102 4
7SR2103 4
7SR2104 4
7SR2105 4
7SR2106 4
7SR2202 5
7SR2203 5
7SR2204 5
7SR2205 5
7SR2206 5
Relays are assembled from the following modules: -
1. Front Fascia with three fixed function LEDs and ordering options of configurable LEDs/Function Keys.
2. Processor module
3. Analogue Input module, either
·
4 x Current + 6 x Binary Inputs + 2 x Binary Outputs (7SR21), or
·
5 x Current + 4 x Voltage (7SR22).
4. Power Supply and 3 x Binary Inputs (BI) and 6 x Binary Outputs (BO).
5. Optional Binary Input/Output Module
·
10 x Binary Inputs + 8 x Binary Outputs
·
20 x Binary Inputs
6. Optional Communications Module (2x rear fibre optic + 1x IRIG-B ports), (1x rear RS485 + 1x IRIG-B
port), (1x rear RS232 + 1x IRIG-B port), (2x Electrical Ethernet for IEC 61850), (2x Optical Ethernet for
IEC 61850).
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Voltage Binary
Inputs Inputs
9
19
19
39
39
4 3
4 13
4 13
4 33
4 33
7SR210 & 7SR220 Description of Operation
Output LEDs
Relays
8 8
16 16
16 8
16 32
16 16
6 8
14 16
14 8
14 32
14 16
Function Case
Keys
E6
E8
6 E8
E12
12 E12
E6
E8
6 E8
E12
12 E12
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