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abc2002831
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12樓  發(fā)表于: 2018-12-24 16:02
有PLC 變頻 和伺服這些電路，一般都是用24V。
如果只是正反轉或星三角這些電路就直接380V了，復雜電路還是24V控制安全性高
xuhaiguo
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13樓  發(fā)表于: 2018-12-24 16:53
家里控制燈的按鈕是220V的，插座也是220V的（有漏電）。
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