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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。5 t7 T" z8 p0 E: _. F4 X
看PELV的定义,实际上也是回到了1和2的条件。
+ F ^5 V. S' d( pprotective extra-low voltage circuit
+ L: s" c! c6 r) yearthed circuit operating at safety extra-low voltage which is separated from other circuits , z$ X* R* Y$ c4 v3 V" C, w) y" i
by basic insulation and protective screening, double insulation or reinforced insulation4 d& T: `" Q3 I. @5 M" Y
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by basic insulation and protective screening——基本绝缘+保护性接地, s3 c0 v3 U) M h" ?* U
by double insulation or reinforced insulation——双重绝缘/加强绝缘! O* Y# W6 F9 V; o+ w
//Protective screening is the separation of circuits from live parts by means of an earthed screen.//
( D+ `8 H5 Q9 S$ e# ?1 a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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