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引用第53楼wangrang于2007-08-29 13:28发表的 :
' {8 _) Z6 k2 B% D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~
$ p# @5 s, c) ?" m5.2.5 Standard arcing test for Type HPN
& {6 U; W$ j/ {' b5.2.5.1 General
3 v) M9 r3 C6 t4 vType HPN cord shall not arc when a specimen of finished cord is connected at one end to a 120 V (rms)7 b: J# v8 _- k: I
source of supply through a 15 A fuse or circuit breaker and subjected to a standard test flame applied 13, e _1 C- f, N9 G
mm (0.5 in) from the other end of the specimen for 2 min. Compliance shall be determined in accordance3 }. `7 c4 x# ?
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.& @7 U% h9 M) w% N
5.2.5.2 Test method& |4 S. t) V' Y) A5 ~; g) {8 K
The specimen for test shall be of any suitable length. One end shall be cut off square, care being taken/ `8 I/ e+ [3 q8 u. n( {6 V
that the conductor ends are flush with the cut end of the cord. The cord shall be laid across a
& j& V2 O- b) t6 p( Z2 s0 ?nonconductive surface, the square cut end protruding approximately 0.1 m (4.0 in) beyond the surface
0 s# t9 ?7 B0 P# K t* `edge. The opposite end shall be connected to the voltage source between the conductors of a
/ z. [ H; Q. f, n1 {8 i y6 }two-conductor cord and between the circuit conductors joined together and the grounding conductor of a
4 ]6 g0 A5 o7 d6 P0 m8 E/ O; z; l2 lthree-conductor cord. Using a Tirrill, Bunsen, or similar appropriate gas burner, a standard test flame (as
; v) g. Y9 Q! a, r. hdescribed in Clause 5.1.5.1) shall be obtained. With its barrel vertical, the burner shall be placed under
! e$ T) D! C+ y6 g7 Wthe free end of the cord with the tip of the inner blue cone touching the flat underside of the specimen
8 A( O" g( Y& Z* m' @midway between the conductors and 13 mm (0.5 in) from the square end for a 2 min period. The cord' y; y5 ^" I% P/ _, \4 v
does 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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5 _8 [+ r& g4 I5.2.6 Flex arcing test for Type HPN
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" G3 K6 N. G! E6 N# o5.2.6.2 Procedure: F% T5 X2 G! P: J
The procedure shall be as follows:~ |
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