1) Requirements:

* Temperature: ±40℃

* Attitude: ≤3000meters

* Wind speed: 34m/s

* Earthquake strength: 8

2) Technical parameter:

* Rated voltage(KV): 12

* Rated current(A) : 630

* Rated short-time resisting current(KA): 20

* Rated peak resisting current (KA): 40

* Power frequency resisting voltage(Distance)(KV): 48

* Power frequency resisting voltage(Relatively)(KV): 42

* Lighting impulse resisting voltage(Distance)(KV): 85

* Lighting impulse resisting voltage(Relatively)(KV): 75

* Machine life: 2000 times