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和其他电路之间满足双重绝缘、加强绝缘就可以了
: p! G; m/ Z9 D& z. C N3.4.42 k. X$ d( N& B; y2 f/ E5 B8 o; c) X
protective extra-low voltage circuit
! I- \5 K( a3 k$ J. ~earthed circuit operating at safety extra-low voltage which is separated from other circuits
- p7 [, v" p* g5 L1 Mby basic insulation and protective screening, double insulation or reinforced insulation2 i+ o$ o! ]% m4 d4 [
NOTE 1 Protective screening is the separation of circuits from live parts by means of an earthed screen.
# I# f8 _ J( l' k6 X |) c" f; yNOTE 2 A protective extra-low voltage circuit is also known as a PELV circuit. |
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