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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。
- q" y+ [2 z8 |; x5 f) q' d$ ~1 d看PELV的定义,实际上也是回到了1和2的条件。0 a0 p# \, L2 P+ `
protective extra-low voltage circuit
" ]( a" N$ l% z2 d5 X: h' @8 Tearthed circuit operating at safety extra-low voltage which is separated from other circuits 1 c- W% H/ c- _7 x: n; e# S$ D# n
by basic insulation and protective screening, double insulation or reinforced insulation
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& y& b# L: A7 A% g+ r' mby basic insulation and protective screening——基本绝缘+保护性接地
' P. V0 i5 _3 P+ O fby double insulation or reinforced insulation——双重绝缘/加强绝缘
) u& M4 F" Z" Z2 X' a) d4 W0 Y//Protective screening is the separation of circuits from live parts by means of an earthed screen.//
2 W& r# J8 j+ D2 `) ?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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