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sky072154
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樓主  發(fā)表于: 2010-02-04 22:36
請教0.75KW電機應該接多大的熱繼?  空開(kāi)，繼電器?，應該接多少平方的線(xiàn)啊?
wayu
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1樓  發(fā)表于: 2010-02-05 11:48
是用斷路器（有人叫空開(kāi)），不是用保險絲，保險絲要3-5倍的，
斷路器一般是用電電流的1.0到1.1倍就可以了。

0.75KW電機的熱繼選1.7到2.5A(3相380V)  ,5.2到8A(單相220V)
wayu
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2樓  發(fā)表于: 2010-02-05 11:51
電纜線(xiàn)：
3相380V    4X2.5平方
單相220V  3X2.5平方

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