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UL60950-1
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. G: Y& [" z* }, ]. D( Q- AWhen testing three-phase equipment, any components used for EMC purposes and connected
- I" a" v( K1 V5 jbetween line and earth are disconnected one at a time; for this purpose, groups of components5 {# V' V0 p. \; f. J- p
in parallel connected through a single connection are treated as single components. Each time! a( W2 i C& J' M4 K$ Q
a line-to-earth component is disconnected the sequence of switch operations is repeated.: K9 I$ \4 C! m4 A* U
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大家是怎么去断开电容的?9 W2 F& x0 H0 k3 J$ n, ?# E9 d
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?4 {1 o( X0 ^) L+ \, g
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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