|
|
如果适配器是隔离型的,而且输出满足LPS& [7 Y: p& q i6 }" j; Q6 d* y
产品的PCB在V-1级或者以上,外壳材料可以是HB等级的,依据IEC/UL 60950-1 4.7.2.2:5 V7 b* a3 N. f3 g% s9 v. O, D
% b! d3 @% E8 i( N2 l8 t x4 B) N# E
The following do not require a FIRE ENCLOSURE:0 h' y( s- S0 q# W* Q8 P" W
...
8 r3 E( ~" y I& n% ?1 D- other components in SECONDARY CIRCUITS:$ _. x y. H& W* y0 M9 D
• supplied by limited power sources complying with 2.5 and mounted on V-1. m8 d- [7 O/ G
CLASS MATERIAL;) [. h* Y( r$ V7 J& Q+ l% J+ A- U3 s; r
....
$ a3 A' x8 f* O2 E$ ?, E; u% ^2 y2 ^: w# I+ I( w
如果不满足要求,外壳的防火等级就要看Table 4E - Summary of material flammability requirements 的要求了 |
|