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引用第53楼wangrang于2007-08-29 13:28发表的 :7 s+ [7 e( ]" h" E& @$ f9 m
有沒有誰比較了解HPN線材的耐電弧測試的呢?說說吧!
5.2.5 Standard arcing test for Type HPN
" G9 Z4 u: w o1 L5.2.5.1 General* n8 s# Y8 j. K$ H( [, T
Type HPN cord shall not arc when a specimen of finished cord is connected at one end to a 120 V (rms)
1 d$ E3 A1 `6 f1 ~9 ?source of supply through a 15 A fuse or circuit breaker and subjected to a standard test flame applied 13
{ u% U+ p- W5 _ O8 fmm (0.5 in) from the other end of the specimen for 2 min. Compliance shall be determined in accordance
& o# S3 z5 [' E8 m4 f3 f0 e! fwith the method described in Clause 5.2.5.2; CSA C22.2 No. 0.3, Clause 4.28.12; or UL 1581, Section 1670.
+ ]0 }4 b/ p8 Z3 V1 \4 w) m5.2.5.2 Test method' `; H2 D) z, @4 M' l0 X
The specimen for test shall be of any suitable length. One end shall be cut off square, care being taken
y' ]. x7 S% Z: L% t* H, L6 ythat the conductor ends are flush with the cut end of the cord. The cord shall be laid across a
: s1 ^1 v" X* mnonconductive surface, the square cut end protruding approximately 0.1 m (4.0 in) beyond the surface! M; N( c- ~: P# @ w7 e( k
edge. The opposite end shall be connected to the voltage source between the conductors of a/ Q7 G `. V" ?/ S, O! Z4 {0 }
two-conductor cord and between the circuit conductors joined together and the grounding conductor of a
+ l# W2 r9 q7 y8 Ethree-conductor cord. Using a Tirrill, Bunsen, or similar appropriate gas burner, a standard test flame (as
/ h+ K% d. v5 i+ p$ idescribed in Clause 5.1.5.1) shall be obtained. With its barrel vertical, the burner shall be placed under4 L% m" e$ |$ _
the free end of the cord with the tip of the inner blue cone touching the flat underside of the specimen
# I3 A+ c% Z6 ]2 H! kmidway between the conductors and 13 mm (0.5 in) from the square end for a 2 min period. The cord. \3 u4 i6 `) |( Z
does not comply if arcing occurs between the conductors during application of the flame or if the fuse or circuit breaker opens.2 v7 z* z0 A+ v$ k2 \0 _9 |$ s
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5.2.6 Flex arcing test for Type HPN9 f' _8 M W$ L% N) u$ i2 V
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5.2.6.2 Procedure
) s, A4 l- r: H/ w1 z, N, s! dThe procedure shall be as follows:~ |
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发表于 2007-8-20 19:27
发表于 2007-8-29 13:28
