|
|
热爱学习 发表于 2015-8-13 17:07 
) I* T! ]4 F+ E8 K. k固体绝缘29.3的三条是选择性的,只要满足其中一条即可,厚度仅仅是其中一条,并非必须满足
* U2 W0 t7 N) r6 @而且第三条就 ...
|: g$ c: U# l, Q22.33 条款2的问题可以归结于对于可接触的导电液体单层绝缘是否可靠的问题,很明显,标准是认为不可靠的,水和金属应该考虑为一体,因为金属是导电没有绝缘的,做绝缘的只是单层的陶瓷体,就算陶瓷体可以做为加强绝缘,也是单层的,也就是说这种结构是绝对不允许的,考虑陶瓷体开裂的问题,还是直接包三层绝缘胶带比较靠谱
( B9 T- z# P/ K, R: d
. f8 N; b K5 f% E5 ~9 z4 f* p5 JFor class II construction, conductive liquids that are or may become accessible in normal6 Z% X- ]6 E" i: n
use and conductive liquids that are in contact with unearthed accessible metal parts shall
5 o" y$ E- l$ q1 K/ a7 @ ]not be in direct contact with basic insulation or reinforced insulation unless the reinforced/ v5 _6 M; l7 `* F
insulation consists of at least 3 layers. |
|