发布时间:2025-02-01 19:27:00
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!
在外贸服装中生产前给客户寄样品让其确认后生产不就可以了吗为什么生产完后还要寄大货样呢很是疑惑
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