1. Ambient temperature: -5?~+40?, average temperature≤+35? in 24h
2. Altitude≤2000m
3. Air condition: when temperature up to 40?, the humidity should be ≤ 50%, temperature lower, the humidity higher, for example, humidity would be 90% when temperature is +20?. Occasionally, due to temperature changes resulting condensation, special measures should be taken.
4. Pollution degree :
5. Mounting type: Type II
6. No significant shake, shock and vibration
7. In the absence of explosive medium, the medium does not enough to corrode metal and damage the insulation.