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汗, 下了一堆原来是这个问题, 图片太误导了,这个没办法现在标准要求这样.
+ W# ]% ~" m8 u) @* B3类的plug 不能跟高压的混用, 是因为3类的pin脚有可能插入到标准的2类母差里面.
; s8 k5 f& {' T5 ?0 wPlugs and socket-outlets in SELV systems shall comply with the following requirements: – plugs shall not be able to enter socket-outlets of other voltage systems; – socket-outlets shall not admit plugs of other voltage systems; – plugs and socket-outlets in SELV systems shall not have a protective conductor contact; M5 F* T% i, ^2 [: \. `- c
4.3.31 以及5.2.14 都有描述.' b. w: t$ E. \4 E
2 U# z/ g& { ^3 z
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