" A, i) K- G* R# B7 y" H/ ~. O6 A29.3.1、29.3.2条款不满足时,29.3.3适用。若从设计角度考虑29.3.1的条件容易实现,如果材料厚度不满足29.3.1条款时应注意21.2条款的规定。作者: plmijb 时间: 2012-9-11 22:09
29.3 Supplementary insulation and reinforced insulation shall have adequate thickness,- l3 h9 t: I! m9 l& i5 E
or have a sufficient number of layers, to withstand the electrical stresses that can be expected; f$ ~) U2 t8 e! S
during the use of the appliance. 8 p1 H2 G' n" @4 E4 V* h) eCompliance is checked+ X0 e9 m- Q, v% r1 @+ V! X- B
– by measurement, in accordance with 29.3.1, or $ a( ~$ q2 N j– by an electric strength test in accordance with 29.3.2, if the insulation consists of more9 e1 Q, l8 Q' Y' n2 o
than one separate layer, other than natural mica or similar flaky material, or) V C" o: s/ \
– by an assessment of the thermal quality of the material combined with an electric strength' U. O4 Y5 h5 J
test, in accordance with 29.3.3 and for accessible parts of reinforced insulation/ F0 q+ k B% `4 y
consisting of a single layer, by measurement in accordance with 29.3.4, or作者: qin.cq 时间: 2012-9-12 12:40
不能少于2MM作者: craigyu 时间: 2012-9-13 12:42
没有一定要求, 但是要过得了机械强度, 厚度太薄肯定不行作者: liscsupor 时间: 2012-9-13 17:19