| Customization: | Available |
|---|---|
| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Electric Type |
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| Technical Specification | |||||
| Rated voltage | KV | 12 | 24 | ||
| Rated current | A | 630,1250,1600,2500,3150 | |||
| Rated frequency | HZ | 50 | 50 | ||
| Rated insulation level | |||||
| 1min power frequency witchstand voltage | KV | 42/48 | 65 | ||
| Lightning impulse withstand voltage | KV | 75/85 | 125 | ||
| Rated short circuit breaking current | KA | 20/25 | 31.5 | 31.5 | |
| 4S rated short circuit withstand current | KA | 20/25 | 31.5 | 31.5 | |
| Rated peak tolerable current | KA | 50/63 | 80 | 80 | |
| Rated short circuit switching current (peak value) | KA | 50/63 | 80 | 80 | |
| Operation sequence of automatic reclosure | O-0.3s-CO-180s-CO score-0.3s-score-180s-score | ||||
| Arcing time | ms | ≤15 | |||
| Rated short circuit breaking current | times | 100 | 50 | 100 | |
| Mechanical life | times | 20000 | 20000 | ||
| Contact opening (according to vacuum tube) | mm | 11±1(9±1) | 13±1 | ||
| Contact overrun | mm | 3.5±0.5 | 3±1 | ||
| Contact closing bounce time | ms | ≤3 | ≤2 | ||
| Different periods of Three-phase closing | ms | ≤2 | ≤2 | ||
| Opening speed | m/s | 0.9~1.5 | 0.9~1.7 | ||
| Closing speed | m/s | 0.5~0.9 | 0.6~1.0 | ||
| Opening time | ms | ≤50 | 20~50 | ||
| Closing time | ms | ≤100 | 35~70 | ||
| Main circuit resistance | |||||
| Rated current:630A | μΩ | ≤50 | ≤45 | ||
| Rated current:1250A | ≤40 | ≤35 | |||
| Interphase centre distance | mm | 210±2 | 210,270,275 | ||
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