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本帖最后由 leaphile 于 2015-3-4 23:13 编辑 ' y+ q4 H# J6 ^4 y
canghai 发表于 2015-3-4 18:45 
5 C1 z1 P$ I0 ?screening 和connect是有区别的吧,屏蔽和连接应该还是有差别的。
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2 F) l7 i9 w9 D3 kprotective extra-low voltage circuit* W. F! w% g; c) n+ l+ y4 D, k
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earthed circuit operating at safety extra-low voltage which is separated from other circuits by
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- basic insulation and protective screening1 h* x# M5 t# D* g2 g
- double insulation or
Z% m0 C: q" J, m/ L( c- Q- reinforced insulation
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这好像是说PELV电路和其他电路之间的绝缘要求- n2 V" P7 a" z" u* g
而不是说PELV 电路不能和earth 连接?
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