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29.3对厚度合格有3个考核方法
) `0 q, K) X$ _0 E- DCompliance is checked " @& h! [/ b3 I5 o1 W. @5 G
– by measurement, in accordance with 29.3.1, or * |1 G* y4 a, L5 C& J! \5 J' ?8 _' O8 D
– by an electric strength test in accordance with 29.3.2, if the insulation consists of more
" H5 n7 H. I5 a% z# Hthan one separate layer, other than natural mica or similar flaky material, or
4 q# a) r4 x7 x0 V; j; r C– by an assessment of the thermal quality of the material combined with an electric strength
" ]( k# }5 `7 @test, in accordance with 29.3.3 B) Z$ G9 V3 q; x
这样的结构肯定属于class II,厚度多少的目的只是为了达到经受可能会出现的电气应力,所以,如果符合该3个方法之一,可以接受。
3 e% G; T4 q% z* H个人理解 |
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