Quote:
引用第53楼wangrang于2007-08-29 13:28发表的 :
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~
5.2.5 Standard arcing test for Type HPN
5.2.5.1 General
Type HPN cord shall not arc when a specimen of finished cord is connected at one end to a 120 V (rms)
source of supply through a 15 A fuse or circuit breaker and subjected to a standard test flame applied 13
mm (0.5 in) from the other end of the specimen for 2 min. Compliance shall be determined in accordance
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.
5.2.5.2 Test method
The specimen for test shall be of any suitable length. One end shall be cut off square, care being taken
that the conductor ends are flush with the cut end of the cord. The cord shall be laid across a
nonconductive surface, the square cut end protruding approximately 0.1 m (4.0 in) beyond the surface
edge. The opposite end shall be connected to the voltage source between the conductors of a
two-conductor cord and between the circuit conductors joined together and the grounding conductor of a
three-conductor cord. Using a Tirrill, Bunsen, or similar appropriate gas burner, a standard test flame (as
described in Clause 5.1.5.1) shall be obtained. With its barrel vertical, the burner shall be placed under
the free end of the cord with the tip of the inner blue cone touching the flat underside of the specimen
midway between the conductors and 13 mm (0.5 in) from the square end for a 2 min period. The cord
does not comply if arcing occurs between the conductors during application of the flame or if the fuse or circuit breaker opens.
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5.2.6 Flex arcing test for Type HPN
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5.2.6.2 Procedure
The procedure shall be as follows:~