|
|
本帖最后由 leaphile 于 2015-3-4 23:13 编辑 8 X1 q. m& ^6 `; G# J- s9 R: g
canghai 发表于 2015-3-4 18:45 . t6 b( v. ?+ c1 h
screening 和connect是有区别的吧,屏蔽和连接应该还是有差别的。 # W+ |. |8 j: Y/ E9 A- o
3.4.4% S/ b3 ]% c7 _5 I4 g
. N4 h4 h, x3 n# N
protective extra-low voltage circuit
% c& I) d: Y: D2 M& _" S F4 f- M6 H
earthed circuit operating at safety extra-low voltage which is separated from other circuits by
# I5 n6 ^# \# ?8 p1 I! l) H0 W0 d
- basic insulation and protective screening7 K c5 A/ H4 v) x
- double insulation or : K. l( ^. I) {% i, ?- Z
- reinforced insulation
O* F# j q5 \& V/ i) k- D* s5 q0 o: F R+ y: l
这好像是说PELV电路和其他电路之间的绝缘要求6 [% A& w$ Z3 U9 Z- H
而不是说PELV 电路不能和earth 连接?$ [: ~1 s8 c3 L a% \' J5 i
9 X( n& Y' J: K+ f
|
|