求助:线轴(UL355)去美国的和加拿大的有什么不同的要求?

calvin

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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!

fengfan4613

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。。
6 r$ G8 f( v. H! i一下附上一个测试方法：
METHOD
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- Z$ T2 ?0 D! {    One sample of Model _______________ was used for this test.
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    With no portion of the cord withdrawn, the sample was placed on four, single plies of cheesecloth.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 T0 u$ R7 W/ B4 h" H% q[ ]    The metal enclosure was grounded through a 3 A fuse.  

    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].
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+ {  r& E# n: k4 i+ s7 t* HRESULTS
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- A7 x- b( v  J  @' g[ ]    The cheesecloth [did] [did not] ignite.
4 @9 M5 N; C9 }* F2 [8 y9 e
3 w4 o- h, i& l! O  ^[ ]    The ground fuse [did] [did not] open.

jeremyho88

谢谢