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引用第53楼wangrang于2007-08-29 13:28发表的 :
( P+ L5 }) K. u8 b. g/ 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~0 W8 o+ x" I5 i2 V E9 c) ?
5.2.5 Standard arcing test for Type HPN
7 L+ L4 \3 L' `, |/ b5.2.5.1 General
( e% y7 a' Q7 D0 K2 nType HPN cord shall not arc when a specimen of finished cord is connected at one end to a 120 V (rms)+ s6 I5 }; H; M, s/ L! j* X
source of supply through a 15 A fuse or circuit breaker and subjected to a standard test flame applied 13
! f$ Z+ l$ f8 B' P9 T2 g, ?mm (0.5 in) from the other end of the specimen for 2 min. Compliance shall be determined in accordance9 b4 k! t) G$ a+ d
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.
( M- i V( o5 [5.2.5.2 Test method% k7 M1 l1 }; E w8 B! t( F
The specimen for test shall be of any suitable length. One end shall be cut off square, care being taken6 w' [9 k3 p9 k5 q( |0 U, P/ N
that the conductor ends are flush with the cut end of the cord. The cord shall be laid across a
: F- H! @+ x i7 dnonconductive surface, the square cut end protruding approximately 0.1 m (4.0 in) beyond the surface
* h/ p# x7 U& K+ T xedge. The opposite end shall be connected to the voltage source between the conductors of a" ~: Y7 j- D$ W) p" g2 G
two-conductor cord and between the circuit conductors joined together and the grounding conductor of a
0 m+ |# Q7 s: Tthree-conductor cord. Using a Tirrill, Bunsen, or similar appropriate gas burner, a standard test flame (as( H8 s+ I: y- P5 x
described in Clause 5.1.5.1) shall be obtained. With its barrel vertical, the burner shall be placed under% G$ Q% g1 Q. N2 _9 e6 F, V
the free end of the cord with the tip of the inner blue cone touching the flat underside of the specimen$ l p/ |! ^$ T/ d2 I! m5 Z
midway between the conductors and 13 mm (0.5 in) from the square end for a 2 min period. The cord7 ]& a; s' e r' k' n, Z
does not comply if arcing occurs between the conductors during application of the flame or if the fuse or circuit breaker opens.5 N( {% D& \0 J, T1 u
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+ z* M' }, G7 O! ]: E+ K$ z/ H5.2.6 Flex arcing test for Type HPN
5 V$ Y" O4 V& f0 g% |===========================
' X6 i. {; o0 T! w7 y/ Q5.2.6.2 Procedure2 W9 A2 u, k! J2 P
The procedure shall be as follows:~ |
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