| Customization: | Available |
|---|---|
| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Electric Type |
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Project | Unit | Data | |
Rated voltage | kV | 12 | |
Rated current | A | 630 1250 | |
Rated frequency | Hz | 50 | |
Rated insulation level | 1-minute power frequency withstand voltage | Dry test kA | 42/48 (fracture surface) |
Wet test kA | 34 | ||
Secondary circuit to ground | 2 | ||
Lightning impulse withstand voltage (peak value) | 75/85 (fracture surface) | ||
Rated short-circuit closing current (peak) | kA | 50 63 | |
Rated short-time withstand current | kA | 20 25 | |
Rated peak withstand current | kA | 50 63 | |
Rated short-circuit breaking current breaking times | order | 30 | |
Rated short-circuit duration | s | 4 | |
Rated operating voltage and rated voltage of auxiliary circuit | V | DC220 AC220 AC/DC220 | |
Rated operating sequence | Min-0.3s HeFen-180s HeFen | ||
Rated current for overcurrent trip | A | 5 | |
Mechanical lifespan | order | 10000 | |
Allowable cumulative thickness of wear for dynamic and static contacts | mm | 3 | |
Rated current of overcurrent release device | A | 5 | |
Current ratio of current transformer | 200/5 400/5 600/5 | ||
Contact opening distance | mm | 9±1 | |
Contact overtravel | mm | 2±0.5 | |
Average opening speed | m/s | 1.2±0.3 | |
Average closing speed | m/s | 0.6±0.2 | |
Opening time | ms | 20 - 40 | |
Closing time | ms | 30 - 60 | |
Closing bounce time | ms | ≤ 2 | |
Three pole asynchronous closing and opening | ≤ 2 | ||
Three phase circuit DC resistance | μΩ | ≤ 80 (with isolation ≤ 150) | |
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