|
楼主 |
发表于 2011-12-7 16:20
|
显示全部楼层
附UL2556标准相关章节:
w1 W( [+ M4 n( x
$ X" Z% @5 C3 d* o$ o4 Insulation and jacket materials tests* C6 e2 K3 r8 @2 f4 x# L9 t0 Z
4.1 Thickness
& @7 O; |8 q$ D N1 G% J8 V3 W* B0 C3 ~3 k' ~$ s
4.1.4.2.1 Averaging method. v: I7 f4 u( F! }0 u. f
The minimum and maximum thickness shall be determined using the procedures described in Clause
4 s- ?: ?- O( [$ |& M1 B* l1 o% Z' s4.1.4.1.1 or 4.1.4.1.2. For insulation, measurements shall be made within the irregularities resulting from! S" h7 R3 h8 y3 _/ q4 y% z
conductor stranding. For extruded-to-fill jackets, all measurements shall be made within the irregularities* ?: d+ [! r. w; Y
resulting from the conductors. If the pin described in Clause 4.1.4.1.1 does not fit within the irregularities,9 e' h4 v, D- f8 R7 Q9 q6 d
this method is not applicable. |
|