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- NR Electric
NR Electric differential protection relays
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... The PCS-931 relay provides full-scheme current differential and distance protection solutions for transmission lines with high- speed sub-cycle distance element. As well, the pilot scheme of distance ...
NR Electric
... rate-of-change protection (81R) • Two stages reverse power protection (32R) • Two stages thermal overload protection (49P) • One stage undercurrent protection (37) • Breaker failure ...
NR Electric
... feeders. It provides fast and secure low impedance busbar protection with sub-cycle tripping time. Check zone and discrimination zone of differential protection are equipped in the relay ...
NR Electric
... 20 bays; cascading of three devices can protect up to 32 bays). • Busbar current differential protection (87B) • Bus coupler/section protection • Feeder protection • Voltage and ...
NR Electric
... commissioning and maintenance. Busbar current differential protection (87B) Phase current differential protection Percentage restraint DPFC differential protection DPFC ...
NR Electric
... biased current differential protection (87T) • Transformer unrestrained instantaneous current differential protection (87T) • Transformer biased DPFC current differential ...
NR Electric
... Winding differential protection (87W) • Overexcitation protection (24) • Mechanical protection (MR) • Phase overcurrent protection (67P, 50/51P) • ...
NR Electric
... saturation detection • Phase overcurrent protection (50/51P) • Zero sequence overcurrent protection (50/51G) • Negative sequence overcurrent protection ...
NR Electric
... modes. • Current differential protection of generator-transformer unit (87GT) • Current differential protection of generator (87G) • Current differential protection ...
NR Electric
... high performance numerical generator protection device, which integrates main and backup protection into one device. It provides complete protection of a generator in power plant, and it also provides ...
NR Electric
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