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UL 2556
$ L' H+ q s: N. N/ q! `% b4.2.4 Preparation of specimens& D/ ~! u$ j# Z% B$ W5 o
4.2.4.1 Sample selection and number of specimens1 H7 Z( y; j5 F3 X2 _
Samples shall be taken from a wire, cable or cord, finished or during manufacture, at any time following X& Q) ^4 n' @7 U9 Q
curing of the compound, where applicable.8 I& _( }: @9 B# ]6 m1 K' ^, R7 V* \
A minimum of six specimens per sample shall be tested ²as received² and after accelerated aging or liquid; w5 V" b, J: J5 j& J
immersion. If the specimen breaks outside of the gauge marks or the grips of the mechanical9 P* h7 J: W9 M7 R0 L0 O" P
extensometer at a value below that specified as the acceptable minimum, the test results shall be
+ e# W- ?4 H; Gdisregarded and the test shall be repeated with another specimen.
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要求最少取6個樣板. |
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