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这个问题不用想复杂了。简单来看,对于60335,可以碰到的部件要么是,1. I类器具的基本绝缘+保护接地;2. II类结构中的双重绝缘/加强绝缘;3. SELV和PELV。# D1 l$ O1 K7 E: e9 R: K
看PELV的定义,实际上也是回到了1和2的条件。7 i# K& y/ X1 A0 n0 u( q
protective extra-low voltage circuit9 O. h4 l0 e4 u" ?
earthed circuit operating at safety extra-low voltage which is separated from other circuits
3 ?$ y$ K0 ?2 G' Oby basic insulation and protective screening, double insulation or reinforced insulation
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by basic insulation and protective screening——基本绝缘+保护性接地, h1 y; V* s0 R% G: E7 h5 D
by double insulation or reinforced insulation——双重绝缘/加强绝缘$ q$ r, {& }4 u8 F% H: i' M# u
//Protective screening is the separation of circuits from live parts by means of an earthed screen.//
+ D6 r9 z9 s4 R/ K5 N所以,这里看结构时,还是回到最基本的要求,看每个次级输出电路(传感器...)和初级电路之间是否满足上面的要求即可。
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