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标题: 请问UL1574第69章的Mechanical Means of Polarity Test 怎样测试? [打印本页]

作者: xiaoning    时间: 2015-3-24 17:20
标题: 请问UL1574第69章的Mechanical Means of Polarity Test 怎样测试?
Mechanical Means of Polarity Test 里提到要将一个bus bar 的一端连接到一个欧姆表上,1:请问可以用万用表代替吗?万用表有2个表笔,bus bar 的一端连接到一个表笔上么?为什么要将bus bar 的一端连接到一个欧姆表上?, _" x8 t: r" P, R/ \' e
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2:69.2的意思是说这个测试还要通电测试吗?
+ K8 u: g6 k8 R8 @6 b69.2  One end ofeach bus bar is to be connected to a lead on an ohmmeter; theresulting circuit is to be an open circuit that would be completed ifelectrical contact were to be made during the test.* s* W' e8 m5 d: R$ q: l
谢谢!
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