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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.
1 g7 t3 z, X& C* e0 x" t4 g' v/ k$ p3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." S9 P9 J$ G2 D- J0 B
Plugs 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 contact5 q5 p' g! {4 L/ c0 O% t
4.3.31 以及5.2.14 都有描述.
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