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 6 P4 y& {' x1 F4 H" j7 N' }4 L, ~protective extra-low voltage circuit+ V) H2 `3 d' @3 q3 D
earthed circuit operating at safety extra-low voltage which is separated from other circuits* [, P8 ]1 {# s/ A6 P/ N
by basic insulation and protective screening, double insulation or reinforced insulation 7 \3 F! S8 W2 N- C$ H% p# w0 s5 G/ ^( l9 Y
NOTE 1 Protective screening is the separation of circuits from live parts by means of an earthed screen.$ d9 i' k5 T/ m% E
NOTE 2 A protective extra-low voltage circuit is also known as a PELV circuit.7 c" N5 F; I% A% h