发布时间:2025-02-01 19:22:30
变频器供电笼型异步电机应用导则指出:应该两端接地。个人意见,先按照两端接地试验,若地电流较大的话,可考虑改为单端接地!
自家买的房一楼将空调安在二三楼楼梯口铁棚在二楼窗子下一小截二楼有权要求他们拆卸吗
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