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引用第53楼wangrang于2007-08-29 13:28发表的 :
0 y* X/ q% j' h3 |. z: h. N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~$ R$ g& [5 a) @4 i2 N
5.2.5 Standard arcing test for Type HPN
" S, `! I* N0 H: g5.2.5.1 General
. v: N/ c* p8 W6 c2 iType HPN cord shall not arc when a specimen of finished cord is connected at one end to a 120 V (rms)
. k) S7 P, }9 T$ H8 fsource of supply through a 15 A fuse or circuit breaker and subjected to a standard test flame applied 13
N& |" x$ k. q7 ?6 x8 \9 ^mm (0.5 in) from the other end of the specimen for 2 min. Compliance shall be determined in accordance4 [5 ~) U) p$ r% u1 ~' ?
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.
' j0 c! ?& B* M4 m, l5 Q4 d5.2.5.2 Test method
- j- \7 i# I; I7 {9 b+ ^9 j) ]$ z) vThe specimen for test shall be of any suitable length. One end shall be cut off square, care being taken# i' E' ?% n5 ~ j: S5 y7 ^
that the conductor ends are flush with the cut end of the cord. The cord shall be laid across a$ A' A" E" p8 L8 g: R
nonconductive surface, the square cut end protruding approximately 0.1 m (4.0 in) beyond the surface$ b* Q8 D F9 `# ~$ G$ H E: s
edge. The opposite end shall be connected to the voltage source between the conductors of a# q, G H& T+ j. X" J
two-conductor cord and between the circuit conductors joined together and the grounding conductor of a( t! |5 r- T9 s& x
three-conductor cord. Using a Tirrill, Bunsen, or similar appropriate gas burner, a standard test flame (as
2 x5 J$ T. O+ Q: o8 @0 R; ^" Kdescribed in Clause 5.1.5.1) shall be obtained. With its barrel vertical, the burner shall be placed under
$ H$ P$ f5 p5 {+ E3 jthe free end of the cord with the tip of the inner blue cone touching the flat underside of the specimen
/ _: I! w$ ^$ }midway between the conductors and 13 mm (0.5 in) from the square end for a 2 min period. The cord4 G/ X% T8 v( B* y1 N$ |9 e
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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, e# Z* y8 J$ C9 z. X, H2 _5.2.6 Flex arcing test for Type HPN* p# }: N! B. n
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5.2.6.2 Procedure
8 ?, h# j. |) |" I& K5 m" OThe procedure shall be as follows:~ |
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