|
楼主 |
发表于 2011-12-7 16:20
|
显示全部楼层
附UL2556标准相关章节:3 p0 [; g: U5 x0 `/ c0 i0 a& u, D5 K
" N6 z/ T2 I3 y: ]2 } F
4 Insulation and jacket materials tests
7 L' g; h, L, u- Z4 }& Y& ^4.1 Thickness: O, p0 M: y% x6 P# Y, x4 w
8 {. `$ d* w- e
4.1.4.2.1 Averaging method& C' f7 c8 |! H5 ?; R0 P& B
The minimum and maximum thickness shall be determined using the procedures described in Clause* d! ]0 o" G3 P# F! ?
4.1.4.1.1 or 4.1.4.1.2. For insulation, measurements shall be made within the irregularities resulting from6 n; x9 g) _" ?- t# P: V' E
conductor stranding. For extruded-to-fill jackets, all measurements shall be made within the irregularities3 P* X, l1 y" r' f, a( b
resulting from the conductors. If the pin described in Clause 4.1.4.1.1 does not fit within the irregularities,3 P9 M) R8 s8 w0 A; e e' Z
this method is not applicable. |
|