|
29.3对厚度合格有3个考核方法) S# ~5 N; z( W5 i5 I; q* Y8 ^
Compliance is checked - ?' i4 t& D7 A/ [" ^- z1 k1 T" Y
– by measurement, in accordance with 29.3.1, or
: G' |' y2 L: o; I+ ~) D; O. N4 J– by an electric strength test in accordance with 29.3.2, if the insulation consists of more
9 H% ]+ c4 h" B2 m+ n1 H- Kthan one separate layer, other than natural mica or similar flaky material, or
2 `9 Z) U. m% F– by an assessment of the thermal quality of the material combined with an electric strength
% r$ L) A S, ~/ U( h: X3 Htest, in accordance with 29.3.3
5 b- J9 G: o% _6 H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。
- j$ H* u6 |* \6 Y3 J# c个人理解 |
|