Introduction of 7SR11
Siemens Reyrolle 7SR11 Overcurrent Relay functionality helps highly flexible configurations for current plus time grading to ensure it is suitable with each and every one sorts of overcurrent security. The exchange efficiency allows extremely versatile settings for current and time grading rendering it compatible with all types related with overcurrent security.
Siemens 7SR11 overcurrent relays usually are available within single and four-pole variations housed in E4 cases with the IEC 61850 protocol option located within an E6 situation. Integrated reasoning will be offered to allow the perfect configuration of relay functionality along with the relays analog inputs plus binary input/output circuits.
Functions of Siemens 7sr11
Safety, instrumentation, plus metering functionality is usually available via information comms channel(s). The front UNIVERSAL SERIAL BUS port regarding local PC link or rear electrical RS485 port regarding remote connection is usually provided.
- Cold fill configurations
- Four configurations groups
- Password protection – 2 runs
- User-programmable logic
- Self-monitoring
- Circuit breaker vacation countertop and timer
- Mistake, event, and waveform records
Security Functions of Siemens 7sr11
- Security Functions of Siemens 7sr11
- Undercurrent (37)
- Damaged Conductor (46BC)
- Bad Phase Series Overcurrent (46NPS)
- Heat Overburden (49)
- Overcurrent (50, 51)
- World Fault (50G, 50N, 50SEF, 51G, 51N, 51SEF)
- Directional Manage over Overcurrent and Earth Problem (67)
- High Impedance REF (64H)
- Under/Over Volt quality (27/59)
- Bad Phase Sequence Volt quality (47)
- Voltage Managed Overcurrent (51V)
- Fairly neutral Voltage Displacement (59N)
Siemens Reyrolle 7SR11 Guidance Functions
- CT Assistance (60CTS)
- Trip and Close Circuit Guidance (74T/CCS)
- VT Guidance (60VTS)
- Inrush Detector (81HBL2)
- Circuit Breaker Fail (50BF)
Siemens 7sr11 relay also provides primary/secondary current stages and earth path, historical demand record.
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