|
看看这个定义可能有助于理解 SELV 为嘛要加basic,1 T) C9 O* ?5 ` y/ A5 C
safety extra-low voltage
( e) k/ q* N& R6 Y( R0 a6 rvoltage not exceeding 42 V between conductors and between conductors and earth or
. w; ~5 m: O9 yfunctional earth, the no-load voltage not exceeding 50 V。9 I( p! a# k! f
1 R4 K, F2 A: m! `8.1.4 An accessible part is not considered to be live if:
m" ?0 M- M. i i |– the part is supplied at safety extra-low voltage, provided that
8 \, q) ?7 N# N8 Z; P• for AC, the peak value of the voltage does not exceed 42,4 V;
, {% o1 q( K* k• for DC, the voltage does not exceed 42,4 V;" F n D1 F( t4 H: j
$ U/ K! k' n+ L9 t
$ k# q3 r7 E( L% K2 s! N) _0 t/ A' X! h |
|