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怎么理解下面的意思(UL498-2001比较老了)$ w0 a2 ?; I# o& x1 Y/ v
(8 Insulating Materials); W7 n0 q+ f$ R" ?& o# `
8.3 Electrical properties(条款里也有对绝缘材料厚度的要求)# Z7 @, T" d+ K% W7 z
8.4 Thermal properties1 B8 K7 i+ ^$ |8 A5 U
8.4.1 A polymeric material used for electrical insulation or enclosure of live parts shall have the relative
9 `' K" P+ s. D4 Qthermal index ratings shown in Table 8.2 for the specific application of the insulating material. For/ @& G( b/ R6 D1 A
materials with other than VTM flammability classifications, the material shall be evaluated using the
5 W& K' |% u2 t# xspecimen thickness employed in the end product or nominal 1/8 inch (3.2 mm) thickness, whichever is
" u7 o+ j# @8 ~& c8 b+ N5 Z- Kgreater.+ h7 M8 `) e; S
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. |
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