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UL60950-1$ Y1 W! A5 X; X' D3 j
5.1.56 d+ p; v4 Z( b8 U5 h' ~
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When testing three-phase equipment, any components used for EMC purposes and connected7 @9 l, k$ K+ b4 N: m' e
between line and earth are disconnected one at a time; for this purpose, groups of components
' f, T8 I9 [* p, uin parallel connected through a single connection are treated as single components. Each time+ m% k' z$ @/ ]# j$ v6 f U
a line-to-earth component is disconnected the sequence of switch operations is repeated.
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, e2 O" Q% A$ ~2 `大家是怎么去断开电容的?; o: x1 k$ \" d8 P4 ]* `5 ?$ n" r. w
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?* e) S$ K$ S1 d6 c
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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