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发表于 2011-12-7 16:20
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附UL2556标准相关章节:
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" a5 L" p+ Q" v% S) h4 Insulation and jacket materials tests! |' m8 z+ A# W' b
4.1 Thickness; x0 a7 g1 K3 w7 R5 `
' T" N- S2 i/ E- X4.1.4.2.1 Averaging method" e# n( t- b) A6 e6 k4 }
The minimum and maximum thickness shall be determined using the procedures described in Clause
! |9 T, F5 ]8 P4.1.4.1.1 or 4.1.4.1.2. For insulation, measurements shall be made within the irregularities resulting from
, T4 {. O" H. N" R5 L* @conductor stranding. For extruded-to-fill jackets, all measurements shall be made within the irregularities
4 ~- M% R* {7 ?1 Hresulting from the conductors. If the pin described in Clause 4.1.4.1.1 does not fit within the irregularities,
. H) j6 L; U1 n e* zthis method is not applicable. |
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