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29.3对厚度合格有3个考核方法
x" |2 p. Q. h [Compliance is checked ( C; J: ~# p+ q' B/ ?: y4 z& t+ U
– by measurement, in accordance with 29.3.1, or 2 |5 M& p( ?& v2 M6 o; {* p
– by an electric strength test in accordance with 29.3.2, if the insulation consists of more 9 l* h7 N" J' U" N2 t
than one separate layer, other than natural mica or similar flaky material, or 1 p5 z$ g, F! s8 i7 K
– by an assessment of the thermal quality of the material combined with an electric strength
: N( {7 D, A$ y: \3 t# Itest, in accordance with 29.3.3
# ]/ w3 u( `$ L, i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。$ b' |% a' g* @5 J2 Q2 Y
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