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引用第53楼wangrang于2007-08-29 13:28发表的 :& S! x2 a- i6 C5 ~3 f& t6 t
有沒有誰比較了解HPN線材的耐電弧測試的呢?說說吧! 参照UL62 第 5.2.5~5.2.6条.UL62-2006版第49页.~呵呵~
8 S1 p: h/ ^# G" n M6 D$ z5.2.5 Standard arcing test for Type HPN1 X4 o& I. z0 C2 ~: A
5.2.5.1 General
4 q: N: v- H8 S9 b3 Q, GType HPN cord shall not arc when a specimen of finished cord is connected at one end to a 120 V (rms)$ t" i2 y, H9 o; b: n) ]
source of supply through a 15 A fuse or circuit breaker and subjected to a standard test flame applied 13
. E' t5 [# \0 ?0 _2 M0 m) q: hmm (0.5 in) from the other end of the specimen for 2 min. Compliance shall be determined in accordance! ~& {; ~7 V. e* @, q' q
with the method described in Clause 5.2.5.2; CSA C22.2 No. 0.3, Clause 4.28.12; or UL 1581, Section 1670." F% J, A$ Z# j3 s3 b! Y3 n' n8 D
5.2.5.2 Test method
# `* u; M' ~2 K4 wThe specimen for test shall be of any suitable length. One end shall be cut off square, care being taken
% t# S8 X: ^# _( @5 sthat the conductor ends are flush with the cut end of the cord. The cord shall be laid across a
v- T0 Y4 x6 T) Pnonconductive surface, the square cut end protruding approximately 0.1 m (4.0 in) beyond the surface# v2 U' c6 ]% L, L
edge. The opposite end shall be connected to the voltage source between the conductors of a
5 Y6 K8 s. F- Otwo-conductor cord and between the circuit conductors joined together and the grounding conductor of a! P K" c8 h7 C
three-conductor cord. Using a Tirrill, Bunsen, or similar appropriate gas burner, a standard test flame (as% |2 J: y* C' z; b. _
described in Clause 5.1.5.1) shall be obtained. With its barrel vertical, the burner shall be placed under
5 K, x1 x( E1 K7 U7 v4 \. Z. Hthe free end of the cord with the tip of the inner blue cone touching the flat underside of the specimen
3 _& Q6 \4 w+ S, |( g. emidway between the conductors and 13 mm (0.5 in) from the square end for a 2 min period. The cord
& m& i' t3 h, f8 s3 `0 jdoes not comply if arcing occurs between the conductors during application of the flame or if the fuse or circuit breaker opens.
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: U2 |' j" F& n7 M7 B/ v5.2.6 Flex arcing test for Type HPN4 ]) b3 X8 L# b4 e9 e
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5.2.6.2 Procedure
t; {9 D6 _1 A3 v0 w: H3 ^0 L" sThe procedure shall be as follows:~ |
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