标题: 求助:线轴(UL355)去美国的和加拿大的有什么不同的要求? [打印本页] 作者: calvin 时间: 2008-9-19 15:35 标题: 求助:线轴(UL355)去美国的和加拿大的有什么不同的要求? 求助:线轴(UL355)去美国的和加拿大的有什么不同的要求?一般的厂家都只有UL认证,但没有cUL认证,据说cUL的要求,或者说加拿大的要求与美国的有很大的不同.恳请大佬们帮助解释一下,两者的区别在哪里?如何已有UL认证,申请cUL的话要注意哪里东西?谢谢!作者: fengfan4613 时间: 2008-9-23 11:12
据我所了解的是加多一个ABNORMAL HEATING TEST(C22.2 No. 21-M95, Par. 6.16), 因为我也是接触线轴没多久，大家可以探讨一下嘛。。 2 e. Z6 T* z& h( L: A( A2 Y一下附上一个测试方法： # S# ?4 V5 `9 `/ y9 _3 J8 H$ ?METHOD & ~1 b% t( V1 f! p# E3 ` : i& R2 ?0 A4 `4 Q One sample of Model _______________ was used for this test. , c/ g! l# E# E( @. k& ]9 C) a7 k2 }# b; {9 t
With no portion of the cord withdrawn, the sample was placed on four, single plies of cheesecloth. The cord reel was then wired to draw an overload current of _______ A, at rated voltage, on all conductors which normally carry current. The overload current was equal to 110 percent of the maximum current as limited by the [branch circuit breaker] [overcurrent protection device]. The [branch circuit breaker] [overcurrent protection device] was bypassed for this test.! ~4 J$ S* _ g& e% f4 m! [
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[ ] The metal enclosure was grounded through a 3 A fuse. 6 l; N2 k! h& |/ ]: _8 m6 O9 `) D5 f" R: o6 F
Four, additional, single plies of cheesecloth were then used to cover the cord reel. The test was then allowed to continue for 7 h, or until the cheesecloth ignited [or the 3 A ground fuse opened]. & C/ Q% m! f- |( @" C8 Q. ?# y# ]: t7 a3 P# [" W
RESULTS ! r# L; |1 ]' {. |7 @1 N1 U* B% x8 _* T- E
[ ] The cheesecloth [did] [did not] ignite. % P' c4 b5 l F/ j# z Y% s; S- \6 g7 T7 y" {$ U, x6 G
[ ] The ground fuse [did] [did not] open.作者: jeremyho88 时间: 2008-12-6 11:19
谢谢