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27.1 Accessible metal parts of class 0I appliances and class I appliances that may
8 @4 J7 L: e9 ~: j9 F/ A8 \3 V/ q: c; m0 sbecome live in the event of an insulation fault, shall be permanently and reliably connected to
, q8 C' l$ d: f+ E4 u P/ v- }6 van earthing terminal within the appliance or to the earthing contact of the appliance inlet.
0 ]4 E2 r. ]+ D! S8 F5 W8 a这个测试外壳就可以了,完全符合标准要求的。因为如果外壳没有become live,盖子是不可能出现become live的。, K4 g+ v- S4 \2 f
在UL标准里,这个玻璃壳外金属环还可以当成装饰件看待。* H0 Z* X& m$ r, p5 f
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