Table 1.5-1 Ordering Information - 7Sr21 Non-Directional Overcurrent - Siemens Argus 7SR21 Technical Manual
Overcurrent relay
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Also See for Argus 7SR21:
- Manual (71 pages) ,
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- Manual (39 pages)
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Table 1.5-1
Ordering Information – 7SR21 Non-Directional Overcurrent
Product description
Protection Product Family
Overcurrent - Non Directional
Relay Type
1)
Case, I/O and Fascia
E6 case, 4 CT, 9 Binary Inputs, 8 Binary Outputs, 8 LEDs
E8 case, 4 CT, 19 Binary Inputs, 16 Binary Outputs, 16 LEDs
E8 case, 4 CT, 19 Binary Inputs, 16 Binary Outputs, 8 LEDs + 6 keys
E12 case, 4 CT, 39 Binary Inputs / 16 Binary Outputs, 32 LEDs
E12 case, 4 CT, 39 Binary Inputs / 16 Binary Outputs, 16 LEDs, 12 keys
Measuring input
1 A or 5 A, 50 Hz or 60 Hz
Auxiliary voltage
PSU Rated: 30 to 220V DC. Binary Input threshold 19V DC (Rated: 24-250V DC)
PSU Rated: 30 to 220V DC. Binary Input threshold 88V DC (Rated: 110-250V DC)
PSU Rated: 24-250V DC / 100-230V AC. Binary Input threshold 19V DC (Rated: 24-250V DC)
PSU Rated: 24-250V DC / 100-230V AC. Binary Input threshold 88V DC (Rated: 110-250V DC)
Spare
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 RS485 and IRIG-B
Standard version - plus additional rear RS232 and IRIG-B
Standard version - plus additional rear Electrical Ethernet RJ45 (x2)
Standard version - plus additional rear Optical Ethernet Duplex (x2)
Protocol
IEC 60870-5-103 and Modbus RTU (user selectable)
IEC 60870-5-103 and Modbus RTU and DNP 3.0 (user selectable)
IEC 60870-5-103 and Modbus RTU and DNP 3.0 (user selectable) and IEC61850
Spare
Protection Function Packages
Standard version - included in all models
37
Undercurrent
46BC
Broken conductor/load unbalance
46NPS
Negative phase sequence overcurrent
49
Thermal overload
50
Instantaneous phase fault overcurrent
50BF
Circuit breaker fail
50G/50N
Instantaneous earth fault/SEF
50 AFD
Arc Flash Detector
51
Time delayed phase fault overcurrent
51G/51N
Time delayed earth fault/SEF
60CTS-I
CT supervision
64H
High impedance REF
74TC/CCS Trip & close circuit supervision
81HBL2
Inrush Detector
81HBL5
Overfluxing Detector
86
Lockout
Cold load pickup
Programmable logic
CB Control
Standard version - plus
79
Autoreclose
Additional Functionality
No additional functionality
Spare
Export Data
HS: 8536900
ECCN: N
AL: N
Unrestricted ©2018 Siemens Protection Devices Limited
Variants
7
7SR210 & 7SR220 Description of Operation
Order No.
S
R
2
1
0
-
1
1
0
2
3
4
5
6
1
A
-
0
A
A
B
M
N
A
1
2
3
4
7
7
8
7
1
2
7-8
7
0
C
D
A
Page 9 of 94
0
0
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