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天語(yǔ)愿
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樓主  發(fā)表于: 2016-08-18 13:20
大家都知道，在一般的電氣控制柜中都有噪聲濾波器；近期發(fā)現工作崗位中的配電柜中，有刺耳異響，求助是供電線(xiàn)的問(wèn)題，還是阻抗，電容的原因
whwanghu
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1樓  發(fā)表于: 2016-08-18 17:03
變頻器，驅動(dòng)器，接觸器，變壓器共振了吧

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