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怎么理解下面的意思(UL498-2001比较老了)$ j, w; J S j, A; o8 v K
(8 Insulating Materials), y7 b- `5 Y) c8 E- R- Z9 L
8.3 Electrical properties(条款里也有对绝缘材料厚度的要求)
0 B/ X, ]. L H" V2 q2 |8.4 Thermal properties6 G8 q' _+ o" C* u- A
8.4.1 A polymeric material used for electrical insulation or enclosure of live parts shall have the relative
) w0 e% ?: W7 D r6 v9 K% w7 Nthermal index ratings shown in Table 8.2 for the specific application of the insulating material. For. t; @3 J1 p. ?; l; R" H/ ^ Y
materials with other than VTM flammability classifications, the material shall be evaluated using the7 Y6 V, U& l4 {7 e7 e0 M8 ]
specimen thickness employed in the end product or nominal 1/8 inch (3.2 mm) thickness, whichever is6 k% a E( H& P, T1 O1 ]3 z
greater.
) Q* ?' b4 }5 R# d: T' 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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