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引用第53楼wangrang于2007-08-29 13:28发表的 :! o; r9 q+ P! M# w
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 HPN5 h+ x; c7 ~) m7 Q+ c) e
5.2.5.1 General) [3 m# v4 m7 p; _: t! o
Type HPN cord shall not arc when a specimen of finished cord is connected at one end to a 120 V (rms)
% a5 K; M7 O# s t. g" Tsource of supply through a 15 A fuse or circuit breaker and subjected to a standard test flame applied 13* F( R5 n+ O) t9 R7 E! d: O
mm (0.5 in) from the other end of the specimen for 2 min. Compliance shall be determined in accordance4 h( B }, E) v
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.$ w+ [- D/ [/ D
5.2.5.2 Test method
4 v9 t. X: P- M/ k' \2 HThe specimen for test shall be of any suitable length. One end shall be cut off square, care being taken4 B8 r- [! V h$ n2 G5 \: }: K
that the conductor ends are flush with the cut end of the cord. The cord shall be laid across a# W& e. i( {! k+ I9 b
nonconductive surface, the square cut end protruding approximately 0.1 m (4.0 in) beyond the surface
, V2 ^; j- f a9 J3 nedge. The opposite end shall be connected to the voltage source between the conductors of a' E& f! v% R: Z5 ~+ c, a
two-conductor cord and between the circuit conductors joined together and the grounding conductor of a6 P1 q/ Q5 v3 |1 R4 A& v( A/ Z' ]5 |, d
three-conductor cord. Using a Tirrill, Bunsen, or similar appropriate gas burner, a standard test flame (as
6 C1 G1 Y. t5 v* `1 h; r! J, tdescribed in Clause 5.1.5.1) shall be obtained. With its barrel vertical, the burner shall be placed under H$ g# v( m- ^1 a
the free end of the cord with the tip of the inner blue cone touching the flat underside of the specimen/ I& ]* N; j! b; o& P
midway between the conductors and 13 mm (0.5 in) from the square end for a 2 min period. The cord
; U' H% E; V1 ?4 c0 tdoes not comply if arcing occurs between the conductors during application of the flame or if the fuse or circuit breaker opens.4 a! ^- R3 h) }. V/ e9 i1 t
=======================3 J# b. u/ C6 E$ E) Q$ N6 m/ g
5.2.6 Flex arcing test for Type HPN: w3 x1 c: n/ L+ \
===========================/ s \+ ] `; l* H7 Y7 t P2 p$ U
5.2.6.2 Procedure4 A/ w: s5 N! ~4 l, b4 ^0 d. a
The 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