|
|
引用第53楼wangrang于2007-08-29 13:28发表的 :* f2 U3 B! {" n! t( W
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~. h6 |+ ^+ \! c1 e, u. k
5.2.5 Standard arcing test for Type HPN, Z% ]8 L8 `9 Y7 g- {& y4 J
5.2.5.1 General+ A. i# n9 _+ H: \$ ?- A6 F
Type HPN cord shall not arc when a specimen of finished cord is connected at one end to a 120 V (rms), C/ ^/ l$ F8 t' u) W$ @2 R
source of supply through a 15 A fuse or circuit breaker and subjected to a standard test flame applied 13
, E' m% P1 D f% b6 p1 Lmm (0.5 in) from the other end of the specimen for 2 min. Compliance shall be determined in accordance
T2 S& O* _! q/ S" [with the method described in Clause 5.2.5.2; CSA C22.2 No. 0.3, Clause 4.28.12; or UL 1581, Section 1670.2 @) e- W. y4 h- c& z- b
5.2.5.2 Test method
. K; ~9 g4 E4 O: g( gThe specimen for test shall be of any suitable length. One end shall be cut off square, care being taken
. N% M5 f( \7 ^/ Uthat the conductor ends are flush with the cut end of the cord. The cord shall be laid across a- S5 E/ P Q5 z* h; Z5 ]8 }
nonconductive surface, the square cut end protruding approximately 0.1 m (4.0 in) beyond the surface/ e5 }! x3 b) ^. t( y" i3 l
edge. The opposite end shall be connected to the voltage source between the conductors of a
8 {$ ]. w, J2 H: ltwo-conductor cord and between the circuit conductors joined together and the grounding conductor of a+ J0 m8 B0 C1 `1 _
three-conductor cord. Using a Tirrill, Bunsen, or similar appropriate gas burner, a standard test flame (as
* {4 ], s/ x! r% {' _described in Clause 5.1.5.1) shall be obtained. With its barrel vertical, the burner shall be placed under: s. ^+ z0 @ \/ U3 i0 D
the free end of the cord with the tip of the inner blue cone touching the flat underside of the specimen
* z1 H& z8 x) O6 E( gmidway between the conductors and 13 mm (0.5 in) from the square end for a 2 min period. The cord
6 V; E2 ~1 I- Y& Ldoes not comply if arcing occurs between the conductors during application of the flame or if the fuse or circuit breaker opens.
! K3 t) ?, K& z3 L0 o; F$ d( Z$ ?=======================9 Z- X& U; k6 t( Z8 U! ]
5.2.6 Flex arcing test for Type HPN4 R/ U( ? @+ g& A$ V9 U) I
===========================
8 g9 K# k2 q+ n% n- K/ w5.2.6.2 Procedure
2 ]8 @/ D( H; y5 NThe procedure shall be as follows:~ |
|