China Outdoor Sf6 Gas Circuit Breaker (66kV/132kV), Find details about China Circuit Breaker, Breaker from Outdoor Sf6 Gas Circuit Breaker (66kV/132kV)
Name | Unit | parameter | ||||
reted voltage | kv | 40.5 | 72.5 | 126 | 145 | |
rated frequency | Hz | 50/60 | ||||
rated current | A | 1250,......4000 | ||||
1min power frequency withstand voltage | KV | 95/118 | 140 | 230 | 265 | |
lightning impulse withstand voltage | KV | 215 | 325 | 550 | 650 | |
5min power frequency voltage at zero gas pressure | KV | 40.5 | 55 | 95 | 109 | |
rated short circuit breaking current | KV | 63,.80 | 80,..100 | 80,..100 | 80,..100 | |
rated short breaking current | KV | 21,...31.5 | 31.5,...40 | 31.5,...40 | 31.5,...40 | |
rated out-of-phase breaking current | KV | 8/10 | 10 | 10 | 10 | |
rated cable(line) charging breaking current | A | 31.5 | 10 | 31.5 | 50 | |
rated gas pressure | Mpa | 0.4/0.15 | 0.4 | 0.5 | 0.5 | |
main loop resistance | μΩ | ≤80 | ≤40 | ≤45 | ≤45 | |
operation sequence | O-0.3s-CO-180s-CO | |||||
SF6 gas leakage rate (per year) | % | ≤1 | ||||
moisture content(v/v) | ppm | ≤150 | ||||
creepage distance | across the open contacts | mm | 1256 | 2300 | 3950 | ≥3950 |
to earth | 1256 | 2300 | 3950 | ≥3950 | ||
mechanical life | times | 10,000 |