标题: 请教EN60335-1中的3.4.4 [打印本页] 作者: WAICHLF 时间: 2008-3-21 07:32 标题: 请教EN60335-1中的3.4.4 谁能举例解释保护特低电压电路?怎么接地啊?作者: WAICHLF 时间: 2008-3-22 08:43
斑竹啊!帮我解答作者: gefengde 时间: 2008-4-1 15:20
不知道，谁来解释作者: jack1295254 时间: 2008-4-1 20:20
3.4.4 ( W" Q& r! u3 d2 i l' {4 dprotective extra-low voltage circuit % u/ A6 S+ a- T. [/ D. x% ?; H' learthed circuit operating at safety extra-low voltage which is separated from other circuits 4 g1 w; w8 m" {& D6 z x: L1 Tby basic insulation and protective screening, double insulation or reinforced insulation 4 Q p: q! q: d: _9 Y( ?) s* o! l; f' B* ?# p# O
NOTE 1 Protective screening is the separation of circuits from live parts by means of an earthed screen.7 N0 O$ l0 Y) v& W- u3 D( U
NOTE 2 A protective extra-low voltage circuit is also known as a PELV circuit.: Y0 i1 E% J3 Q5 d8 e