329485466 发表于 2011-10-31 20:38

关于三相设备的漏电流测试的疑问

UL60950-1
5.1.5

When testing three-phase equipment, any components used for EMC purposes and connected
between line and earth are disconnected one at a time; for this purpose, groups of components
in parallel connected through a single connection are treated as single components. Each time
a line-to-earth component is disconnected the sequence of switch operations is repeated.


大家是怎么去断开电容的?
通常一般人的习惯操作是直接缺相来实现,当三相平衡时,断任何一相都一样,当不平衡是怎么处理,该段哪一相?
自己的理解是断相线和地之间Y电容最少的一相。

329485466 发表于 2011-11-6 10:55

大家都是这样操作的?

xadzkjdxhj 发表于 2011-11-19 18:36

同问,有经验的秀秀呀

ok_hmh 发表于 2011-11-21 15:49

我做过三相的设备,但是不是按照这个标准做的,我说下我的做法:三相都做,取最大值。
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