|
怎么理解下面的意思(UL498-2001比较老了)% `6 U; ?: U7 `4 y3 l
(8 Insulating Materials)
4 S( t8 C4 y7 N6 V7 z2 I8.3 Electrical properties(条款里也有对绝缘材料厚度的要求)1 `" ^. ?) Q7 b0 q F) ]
8.4 Thermal properties/ X1 l! U" t" o6 p* \& D3 e2 Z# v
8.4.1 A polymeric material used for electrical insulation or enclosure of live parts shall have the relative7 }0 M' b% ^: \- r
thermal index ratings shown in Table 8.2 for the specific application of the insulating material. For
" e7 k4 S( `& W# Y5 M% m6 cmaterials with other than VTM flammability classifications, the material shall be evaluated using the! U: {8 }0 ?" B* j0 a# @ g
specimen thickness employed in the end product or nominal 1/8 inch (3.2 mm) thickness, whichever is
1 W, w9 v2 ~) K" ?! m# C/ Egreater.) F; d5 Z* _$ m3 _
以上条款的绝缘材料的厚度要求是否对插头外围尺寸起限制作用.或者只是对材料测试时的一种要求. |
|