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parameters
ZN63 (VS1) -12 type vacuum circuit breaker is indoor high voltage switchgear, suitable for three-phase power system with rated voltage of 12KV and frequency of 50HZ. It’s used to protect and control electrical appliances, especially suitable for special advantages of vacuum circuit breakers In the frequent operation of the need for rated current, or short-circuit breaking current place.
ZN63 (VS1) -12 type solid sealed (VBM7) vacuum circuit breakers using fixed installation, mainly for fixed switchgear, the circuit breaker can be used alone, but also for the ring network power supply, box substation or Non-standard power supply system.
| No. | Item | Unit | Data | Data | ||||||
| Rated Voltage | 12 | 24 | ||||||||
| 3 | Rated current | A | 1250,1600 2000, 2500 | 630,1250, 1600,2000,3150 | ||||||
| 4 | Rated short circuit breaking current | kA | 31.5 | 40 | 50 | 20 | 25 | 31.5 | ||
| 5 | Rated short circuit breaking dropon current (peak volue) | kA | 80 | 100 | 125 | 50 | 63 | 80 | ||
| 6 | Rated peak value withstand current | kA | 80 | 100 | 125 | 50 | 63 | 80 | ||
| 7 | 4s rated short time withstand current | kA | 31.5 | 40 | 50 | 20 | 25 | 31.5 | ||
| 8 | Rated insulation level | Power frequency withstand voltage | KV | 42(fracture 48) | 65 | |||||
| Impulse withstand voltage | 75(fracture 85) | 125 | ||||||||
| 9 | Rated sequence of operations | O-0.3s-CO-180s-CO | O-0.3s-CO-180s-CO | |||||||
| 10 | Mechanical life | Time | 10000 | 10000 | ||||||
| 11 | Breaking times for rated short circuit dropout current | Time | 50 | 50 | ||||||
| 12 | Operating voltage | V | 110,220(DC or AC) | |||||||
| 13 | Contact distance | mm | 11±1 | 14±1 | ||||||
| 14 | Overtravel (contact spring reduction length) | mm | 3±0.5 | 3.5±1 | ||||||
| 15 | Three-phase opening/closing asynchrunous | ms | <2 | ≤2 | ||||||
| 16 | Contact switch on bounce time | ms | <2 | ≤2 | ||||||
| 17 | Average opening speed | m/s | 1.05±0.15 | 1.0±0.2 | ||||||
| 18 | Average closing speed | m/s | 0.6±0.2 | 1.3±0.2 | ||||||
| 19 | Opening time | with max operation voltage | s | <0.05 | ||||||
| with min operation voltage | <0.08 | |||||||||
| 20 | Closing time | s | <0.1 | |||||||
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