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本帖最后由 leaphile 于 2015-3-4 23:13 编辑
' q; ^$ e9 y$ e! J& Pcanghai 发表于 2015-3-4 18:45 ' H' h" [2 ?3 b4 U% ^/ t
screening 和connect是有区别的吧,屏蔽和连接应该还是有差别的。 % P3 M0 m( x+ g8 C" G: B+ l8 l; j
3.4.4
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: k8 o- g1 `& w3 g" E- Z' Hprotective extra-low voltage circuit
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J# \: Y' O& l' l9 M4 L+ f& ^earthed circuit operating at safety extra-low voltage which is separated from other circuits by
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- basic insulation and protective screening
( a( Y& A6 K$ m# g0 H4 R- double insulation or
; l, {% `+ `6 ?8 l% K' r; W! d- reinforced insulation0 z: i: E7 u% {1 y) v
) ^7 C; j0 C% F! A这好像是说PELV电路和其他电路之间的绝缘要求8 @: F. i3 j# _& ^5 w
而不是说PELV 电路不能和earth 连接?
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