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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 K8 v3 \1 J+ t0 t/ F
看PELV的定义,实际上也是回到了1和2的条件。6 T& @5 O; D, i$ l
protective extra-low voltage circuit! B9 I/ e, _! Y) @$ j# W
earthed circuit operating at safety extra-low voltage which is separated from other circuits
! e% T+ e1 r1 L$ \/ k# {$ Rby basic insulation and protective screening, double insulation or reinforced insulation
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% k3 l+ e/ F' j- jby basic insulation and protective screening——基本绝缘+保护性接地* J1 S; C* H1 ^, m9 z( n0 W
by double insulation or reinforced insulation——双重绝缘/加强绝缘% t1 v5 X: s9 _, `$ ]+ z
//Protective screening is the separation of circuits from live parts by means of an earthed screen.//
' W0 Z0 s0 O, Q# P" i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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