Table 1-1: 7Sr242 Ordering Options - Siemens 7SR242 Duobias Technical Manual

Table 1-1: 7SR242 Ordering Options

DUOBIAS-M
Multifunctional 2 winding
transformer differential Protection Product
protection Transformer
Relay Type
Differential (2 winding)
Case I/O and Fascia
E8 case, 6 CT, 2 EF/REF CT, 1 VT, 9 Binary Inputs / 6 Binary Outputs,
16 LEDs
E10 case, 6 CT, 2 EF/REF CT, 1 VT, 19 Binary Inputs / 14 Binary Outputs,
24 LEDs
E12 case, 6 CT, 2 EF/REF CT, 1 VT, 39 Binary Inputs / 14 Binary Outputs,
32 LEDs
Measuring Input
1/5 A, 40 - 160V, 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 RS485 (x1) and IRIG-B
Standard version – plus additional rear RS232 (x1) 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 setting)
IEC 60870-5-103, Modbus RTU and DNP 3.0 (user selectable)
IEC 60870-5-103, Modbus RTU and DNP 3.0 (user selectable) and IEC61850
Protection Function Packages
Option A:
- 81HBL2
- 81HBL5
- 87BD
- 87HS
For each winding/circuit breaker
- 50BF
- 64H
- 74TCS/CCS
Option B:
- 37/37G
- 46BC
- 46NPS
- 49
- 50
- 50G/50N
- 51
- 51G/51N
(continued on following page )
©2015 Siemens Protection Devices Limited
Chapter 1) 7SR242 Duobias Description Of Operation
Standard version – Included in all models
Inrush Detector
Overfluxing detector
Biased current differential
Current differential highest
Programmable logic
Circuit breaker fail
High impedance REF
Trip/close circuit supervision
Standard version – plus
Undercurrent
Open circuit
Negative phase sequence overcurrent
Thermal overload
Instantaneous phase fault overcurrent
Instantaneous earth fault
Time delayed phase fault overcurrent
Time delayed earth fault
7 S R 2 4 2 - 2 A
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Chapter 1 Page 8 of 60
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