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开关电源后端输出应该是SELV吧,接地变成PELV
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3.4.4 protective extra-low voltage circuit
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* b6 c6 u0 A: w! P( A; |. m) uearthed circuit operating at safety extra-low voltage which is separated from other circuits by, t/ U/ S2 n* M/ {9 ^/ k
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- basic insulation and protective screening1 z& |; r* b# X& N- T. Q9 X
- double insulation or
- d# J/ @( e6 D6 X8 F- reinforced insulation7 n( [9 m# s' C
6 r& `, I; h& z9 W Z% o: I- W4 ~) J满足上面条件应该是可以的 |
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