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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。& {2 M% m! N3 d" `4 n1 Q' q6 T0 v
看PELV的定义,实际上也是回到了1和2的条件。
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earthed circuit operating at safety extra-low voltage which is separated from other circuits " ?% P: j% L3 s2 `; O9 M
by 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
) S9 j) ^2 U, x' P4 N4 C5 q6 `by double insulation or reinforced insulation——双重绝缘/加强绝缘/ |! s4 S6 y, B/ b) _0 @. L
//Protective screening is the separation of circuits from live parts by means of an earthed screen.//& o& {4 j9 G/ N2 @
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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