Аппарат высокого напряжения — VS1 Type 12KV High Voltage Indoor Vacuum Circuit Breaker 
General
VS1（ZN63） -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.
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.
Items | Unit | Parameters | ||||
Rated voltage | KV | 12 | ||||
Rated Frequency | Hz | 50 | ||||
1min Power Frequency withstand voltage |
KA | 42/48 To the ground / phase | ||||
Lightning Impulse withstand voltage (peak) | 75/85 To the ground / phase | |||||
Rated short circuit breaking current | KA | 20 | 25 | 31.5 | 40 | |
Rated current | A | 630 1250 | 630 1250 | 1250 1600 2000 2500 | 1250 1600 2000 2500 | |
Rated short time withstand current （value）） | KA | 20 | 25 | 31.5 | 40 | |
Rated peak withstand current (peak) | KA | 50 | 63 | 80 | 100 | |
Rated short-circuit current (peak) | KA | 50 | 63 | 80 | 100 | |
Rated short circuit current duration | S | 4 | ||||
Mechanical Life | times | 20000 | ||||
Secondary circuit 1min frequency withstand voltage | V | 2000 | ||||
Rated operating sequence | Split-t-split-t1-split | |||||
note：20KA、25KA、31.5KA t=0.3s t1=180s； 40KA t=180s t1=180s | ||||||
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