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3.4.44 X0 N- z! u; O* {
protective extra-low voltage circuit" W- _. m V+ r6 X/ a; P9 z
earthed circuit operating at safety extra-low voltage which is separated from other circuits+ n" g8 B; {! K6 U
by basic insulation and protective screening, double insulation or reinforced insulation
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; V9 J1 A% |8 [6 nNOTE 1 Protective screening is the separation of circuits from live parts by means of an earthed screen.( f+ `7 m( [: x
NOTE 2 A protective extra-low voltage circuit is also known as a PELV circuit.! w) @' n2 {: O& I
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PELV电路与其它电路用基本绝缘和保护性屏障, 或双重/加强绝缘隔离开, 其中屏障应接地,以弥补基本绝缘的不足. |
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