性及爆炸性尘埃。
3.连续运行电压1.0Un，长期过电压最高值不超过1.1Un。
4.稳态过电流（包括谐波电流）不超过1.43In。
5.最大允许容量不超过1.35Qn。
1.Altitude:less 1000m; Ambicnt Temperature:-40℃~+40℃.
2.No violcnt mcchanical vibration,no harmful gas and vapor,no electric,and cxplosive dust in location.
3.Continuous operation voltage:1.0Un,long-term max,Over-voltage:less 1.1Un.
4.Stable over-current(including ha