4OO KV GIS SUBSTATION Circuit Breaker Specification required for procurement
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- CB Used to control a transmission Line Bays (400 kV GIS substation)
- Single pole type,3-phase,GIS Type SF6,400kV,3150A continuous current rating, 63kA for 1 Second, 157.5 kA(peak), with operation counter, synch check and , re-strike-free, indoor installation, SPAR& TPAR, 0-0.3sec.-CO-3min-CO, first pole-to-clear factor=1.3,duplicate trip coils, minimum number of auxiliary contacts NO=18, NC=18,10A pneumatic / spring / hydraulic operated mechanism or combination of these , control voltage – 220VDC, Duty-C2/M1Type as per IEC 62271-200, IEC 62271-100
- CB Used to control a Transformer/ Reactor Bays (400 kV GIS substation)
- Single pole type , 3-phase , GIS Type SF6, 400kV, 63kA for 1 Second, 157.5 kA(peak), 3150A continuous current rating, with operation counter, synch check and “Point- On-Wave” switching module, re-strike-free, indoor installation, O-0.3s-CO-3m-CO, first pole-to-clear factor=1.3, duplicate trip coils, (minimum number of auxiliary contacts NO=18, NC=18,), pneumatic / spring / hydraulic operated mechanism or combination of these, control voltage – 220VDC, Duty-C2/M1 Type as per IEC 62271-200, IEC 62271-10