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如果适配器是隔离型的,而且输出满足LPS N) L, w) R+ e6 q! v
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 4.7.2.2:6 L" L" y4 k$ d' `& H
$ c! }3 G |% [7 m. bThe following do not require a FIRE ENCLOSURE:1 a$ ~9 j/ k/ s) a$ e5 M
...
5 g0 W' p8 x; ~! W( x+ S: m- other components in SECONDARY CIRCUITS:
" W t: W, }2 r: y• supplied by limited power sources complying with 2.5 and mounted on V-1
9 X4 e6 Z4 p5 c& J/ eCLASS MATERIAL;
: S- Z/ o7 f% \2 G$ m....
% x ?/ _/ L9 W/ i) \0 e2 \$ X
% N: n7 j& G" `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 |
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