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。。 / K0 l w% z& Q& W一下附上一个测试方法：5 @0 S U* f h7 A4 L
METHOD ; f8 J' u6 F! l0 F9 k! C. d; Q1 H7 Z- o' v3 h" d& L5 H1 v5 g& P2 o
One sample of Model _______________ was used for this test. . M6 \5 y+ [# j& O1 B, y1 I8 i. W# R
With no portion of the cord withdrawn, the sample was placed on four, single plies of cheesecloth.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. - |0 ^* I1 E$ X2 i ( ^# f' ^5 r. A) |9 a0 T4 \, T5 j; v& Y[ ] The metal enclosure was grounded through a 3 A fuse. 9 o4 }5 t3 p) K8 b' a; U4 M [0 `- T; {! C5 m
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; m; q) _! C m
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RESULTS 1 q, R5 }' R7 |& q 5 u4 M0 e3 E# G: M- e: F A[ ] The cheesecloth [did] [did not] ignite. 2 x i9 W1 T; i" \& N+ U 6 h1 a% S. m' e% ^ p5 V4 [: K[ ] The ground fuse [did] [did not] open.作者: jeremyho88 时间: 2008-12-6 11:19
谢谢