Requirement:
* Attitude: ≤1000-3000m
* Temperature: ≤40 degree
* Wind speed: ≤35m/s
* The place must be no burn, explode and shock
* Environment pollution: Grade IV

Technical Parameter:
* Rateds voltage(KV): 12
* Rated current(A): 100-200
* Rated switch-off current(KA): 6.3-12.5
* Minmun switch-off current(5A fusing filament)
* Power frequency dry resisting voltage(KV): 42
* Impulse resisting voltage (KV): 90