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发表于 2011-12-7 16:20
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附UL2556标准相关章节:; n. n1 C- }5 E, o7 b
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4 Insulation and jacket materials tests
- q7 O3 D5 z1 D4 Q# D1 p8 y1 O4.1 Thickness, G, v: ] t/ T8 f
- D# v1 G% H2 g# \: B! R- }+ m4.1.4.2.1 Averaging method( {( o. } }( O" N2 ~
The minimum and maximum thickness shall be determined using the procedures described in Clause$ p. Q, w1 D% g& j* C" ~
4.1.4.1.1 or 4.1.4.1.2. For insulation, measurements shall be made within the irregularities resulting from
9 F+ c9 e* F" G+ ]9 uconductor stranding. For extruded-to-fill jackets, all measurements shall be made within the irregularities
- f9 `0 v+ ~, Q1 o& }6 N& Yresulting from the conductors. If the pin described in Clause 4.1.4.1.1 does not fit within the irregularities, @( y: J% z' v l7 C) M( T
this method is not applicable. |
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