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[问题求助] UL检测
P:2008-09-22 16:56:12
2
Dear 余泽平
Thank you for your questions.
I would like to reply as below.
1. Please be noted that the aging requirement (48 hrs, 100C) in UL 1581, table 50.136 shall be used for the PE material with 75C temperature rating. Since your selected sample provided with 80C temperature rating, the aging requirement shall be 7 days, 113C per UL 758, Sec. 7.2.5.
2. We would update the information accordingly.
If you have any question, please feel free to contact me.
Best Regards
Dan Chan
Project Engineer
以上是我提出质疑时,UL给我的回复
总结一下就是:
里面的芯线用的是UL1589 PE绝缘
如果线材印字为80C额定温度,其老化条件则参考UL758 7.2.5部分:7days 113C
而线材印字为75C,或以下(60C),其老化条件则参考UL1581 50.136部分:2days 100C
我再提出质疑说80与75C也只相差5C,怎么会有相差这么大的测试条件
他们答曰:叫我去向美国那边申请修改文件,他们只能按文件作业
不知各位朋友有没有遇到以上类似状况,并予以讨论
helical stripe - 螺旋标志带(绕在导体上,作电路识别用)电缆绝缘线识别方法之一,使用押出或油氧将螺旋条印在绝缘体上。 (0) 投诉
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