|
看看这个定义可能有助于理解 SELV 为嘛要加basic,( p+ [ Z g! d, L) p5 G
safety extra-low voltage y3 z( P) V6 W
voltage not exceeding 42 V between conductors and between conductors and earth or0 p* F8 S8 @' v) X6 z: M
functional earth, the no-load voltage not exceeding 50 V。
+ ~3 G% F1 d! j/ o. o+ |
& p. C1 x: M4 r$ [# x9 o8.1.4 An accessible part is not considered to be live if:
+ e) h9 H% [2 w" ^( Y– the part is supplied at safety extra-low voltage, provided that2 X( A/ B+ u- T8 z6 P
• for AC, the peak value of the voltage does not exceed 42,4 V;
L/ m* q$ Q' I P t, j: e- b# `• for DC, the voltage does not exceed 42,4 V;- K# k$ s# U1 U
* i# v* n' {, S" i- O+ {# Y
2 {8 c3 e; d8 c- q* `, F0 x
|
|