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UL60950-1. I( c, f G0 H. `/ I a/ d& C
5.1.5
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When testing three-phase equipment, any components used for EMC purposes and connected% y* i z6 d9 B) d3 y
between line and earth are disconnected one at a time; for this purpose, groups of components
- g b' o# g4 a3 B* V5 ^) y( O Bin parallel connected through a single connection are treated as single components. Each time+ T* ^, V3 n0 \1 u8 Z+ x
a line-to-earth component is disconnected the sequence of switch operations is repeated.4 ?1 W$ h9 W2 ?: Z. k
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; a$ Q8 ?- X& ^大家是怎么去断开电容的?
6 X: m! r7 y# X: t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?
+ C$ Y$ [( Y( p3 v/ C) W& D0 y自己的理解是断相线和地之间Y电容最少的一相。 |
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