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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.
u4 B% @9 L0 n5 I- [) `3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.
8 G9 X/ k1 m% ^4 DPlugs 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
' B! j8 q: S! u/ o0 D4.3.31 以及5.2.14 都有描述.
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