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引用第53楼wangrang于2007-08-29 13:28发表的 :
! g) `, Q" ]. J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& S$ x8 `0 r. P {5 i
5.2.5.1 General
. P/ J8 k0 g8 ^1 {/ _, jType HPN cord shall not arc when a specimen of finished cord is connected at one end to a 120 V (rms)) M4 t! B/ ^. Y/ `7 D9 Q
source of supply through a 15 A fuse or circuit breaker and subjected to a standard test flame applied 13
5 H7 p2 L; T" Smm (0.5 in) from the other end of the specimen for 2 min. Compliance shall be determined in accordance
1 }! H8 _- H. U) Lwith the method described in Clause 5.2.5.2; CSA C22.2 No. 0.3, Clause 4.28.12; or UL 1581, Section 1670.
. b2 h* a) F. {, o! ?5.2.5.2 Test method8 X+ I. { j& t
The specimen for test shall be of any suitable length. One end shall be cut off square, care being taken
# D/ L+ }! g' {- H8 w7 lthat the conductor ends are flush with the cut end of the cord. The cord shall be laid across a- t; n7 M5 w9 L% q% ^3 e, s0 `9 w
nonconductive surface, the square cut end protruding approximately 0.1 m (4.0 in) beyond the surface0 B% h6 F: U, T+ G
edge. The opposite end shall be connected to the voltage source between the conductors of a* i$ F1 Y7 e7 h% S/ }6 A+ J! g( @
two-conductor cord and between the circuit conductors joined together and the grounding conductor of a
0 _7 i3 r; U& c7 {three-conductor cord. Using a Tirrill, Bunsen, or similar appropriate gas burner, a standard test flame (as
# {# x; a$ Z; x1 gdescribed in Clause 5.1.5.1) shall be obtained. With its barrel vertical, the burner shall be placed under0 A3 S+ L/ |, r; k
the free end of the cord with the tip of the inner blue cone touching the flat underside of the specimen1 `4 f! x: Q( X2 \/ i
midway between the conductors and 13 mm (0.5 in) from the square end for a 2 min period. The cord
/ f" {% _% A- }! D) B# T' tdoes not comply if arcing occurs between the conductors during application of the flame or if the fuse or circuit breaker opens.) {# N0 C7 w: p; K% l) u5 N1 A
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1 t0 U$ D5 E P# _) Y5.2.6 Flex arcing test for Type HPN
2 u$ C0 A+ w$ W5 }, u1 I===========================
+ l% O5 i" P* a! O: ?" W3 S5 |5.2.6.2 Procedure
$ y8 i3 O) {$ W. i- V# Y8 VThe 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