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怎么理解下面的意思(UL498-2001比较老了)0 [6 ]9 ]* }% a4 F6 y" j
(8 Insulating Materials)
% G6 N8 U; \) S+ m# t% Q8.3 Electrical properties(条款里也有对绝缘材料厚度的要求)( A6 {, {- a; N X r
8.4 Thermal properties3 D3 h9 o) R$ l1 I7 T6 g V; z' @
8.4.1 A polymeric material used for electrical insulation or enclosure of live parts shall have the relative
* k; V; O+ r. O/ d+ W% S \0 ~thermal index ratings shown in Table 8.2 for the specific application of the insulating material. For
' P5 S9 W) o! {! a8 [materials with other than VTM flammability classifications, the material shall be evaluated using the' P9 t& r9 _# _4 S0 O; s: Z6 b
specimen thickness employed in the end product or nominal 1/8 inch (3.2 mm) thickness, whichever is
) t) F: U# ^7 G2 n- ]2 sgreater.. ^9 t" x! [' f6 J& p
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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