Table 1-2 Ordering Information - 7Sr22 Directional Overcurrent - Siemens 7SR21 Manual

Table 1-2 Ordering Information – 7SR22 Directional Overcurrent
Product description Variants
Directional O/C Relay
Multi function overcurrent
and earth fault protection
relay Protection Product
Overcurrent – Directional
Case I/O and Fascia
E6 case, 5 CT, 4 VT, 3 Binary Inputs / 6 Binary Outputs, 8 LEDs 2
E8 case, 5 CT, 4 VT, 13 Binary Inputs / 14 Binary Outputs, 16
LEDs
E8 case, 5 CT, 4 VT, 13 Binary Inputs / 14 Binary Outputs, 8
LEDs + 6 Keys
Measuring Input
1/5 A, 63.5/110V, 50/60Hz
Auxiliary voltage
30 to 220V DC, binary input threshold 19V DC
30 to 220V DC, binary input threshold 88V DC
Communication Interface
Standard version – included in all models, USB front port, RS485 rear port
Standard version – plus additional rear F/O ST connectors (x2) and IRIG-B
Standard version – plus additional rear 1x RS485 and IRIG-B
Standard version – plus additional rear 1x RS232 and IRIG-B
Protocol
IEC 60870-5-103 and Modbus RTU (user selectable setting)
IEC 60870-5-103, Modbus RTU and DNP3.0 (user selectable setting)
©2010 Siemens Protection Devices Limited
7SR21 & 7SR22 Argus Description of Operation
Order No.
1)
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7 S R 2 2 0 - 2 A
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A
B
Continued on next page
Chapter 1 Page 10 of 71
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- 0 A 0
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C
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