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引用第53楼wangrang于2007-08-29 13:28发表的 :
8 V, V6 K* j m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~7 {6 Q3 P# z6 u
5.2.5 Standard arcing test for Type HPN$ ^2 H2 d7 K6 f9 [ G6 t8 \
5.2.5.1 General
9 U4 @# L, ?$ J9 u' N6 S; oType HPN cord shall not arc when a specimen of finished cord is connected at one end to a 120 V (rms)
) ?9 K+ y. p3 R6 g" s/ d4 y3 Msource of supply through a 15 A fuse or circuit breaker and subjected to a standard test flame applied 13
h% C, }' ], qmm (0.5 in) from the other end of the specimen for 2 min. Compliance shall be determined in accordance
& E' i% T4 `5 o" M3 ~3 S" Rwith the method described in Clause 5.2.5.2; CSA C22.2 No. 0.3, Clause 4.28.12; or UL 1581, Section 1670.! p" j( ^" h% b' e3 ?$ ?
5.2.5.2 Test method
/ o: N4 J6 h" S" f8 ^! T6 ]The specimen for test shall be of any suitable length. One end shall be cut off square, care being taken* N# v" ^( t' {5 d" K! y
that the conductor ends are flush with the cut end of the cord. The cord shall be laid across a
' x) ~7 Z4 k/ W9 Mnonconductive surface, the square cut end protruding approximately 0.1 m (4.0 in) beyond the surface) y$ y; E" U+ \
edge. The opposite end shall be connected to the voltage source between the conductors of a
% ]" u' L# E) g' ~0 btwo-conductor cord and between the circuit conductors joined together and the grounding conductor of a
, S6 G" J0 P6 j: U' ^three-conductor cord. Using a Tirrill, Bunsen, or similar appropriate gas burner, a standard test flame (as
. t" N9 |' z$ zdescribed in Clause 5.1.5.1) shall be obtained. With its barrel vertical, the burner shall be placed under- A! S; M6 l3 w8 {) e; _
the free end of the cord with the tip of the inner blue cone touching the flat underside of the specimen
. j5 S, l7 Y: S+ ~0 @midway between the conductors and 13 mm (0.5 in) from the square end for a 2 min period. The cord
, n% E( _; {+ K2 ?' ndoes not comply if arcing occurs between the conductors during application of the flame or if the fuse or circuit breaker opens.# F/ m3 D# u8 a4 O$ [* W5 @- I
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) v4 V m7 ]2 ?% w' t5 ?) m5.2.6 Flex arcing test for Type HPN4 `! M, J+ [. `
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5.2.6.2 Procedure8 {8 X1 I( g4 P, m4 h/ G6 ^( n# C
The procedure shall be as follows:~ |
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