- Electricity - Electronics >
- Switch and Relay >
- Current protection relay >
- NR Electric
NR Electric current protection relays
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Protection and Control
- Transformer biased current differential protection (87T)
- Transformer unrestrained instantaneous current differential protection
NR Electric
... shutdown protection (StShut)
NR Electric
... li>Generator reverse power protection (32R)
NR Electric
... COMTRADE)
Protection and Control
- Six-stage overcurrent protection (67P, 50P/51P) and six-stage neutral/ground overcurrent (67G, 50/51G)
- Four-stage
NR Electric
... br>
Protection and Control
- Multi-stage overcurrent protection (50P/51P) and RMS overcurrent (51RMS).
- Six-stage zero-sequence overcurrent (50/51G),
NR Electric
... temperature protection (RTD)
NR Electric
... phase-to-ground distance protection (21L)
NR Electric
... section protection
NR Electric
... handles
protection calculations and
relay coordination; each BU acquires analog and binary signals and executes trip/close commands from the CU.
Protection and control features
- Low-impedance
NR Electric
... phase-to-ground distance protection (21T)
NR Electric
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