shuaijiachen 发表于 2016-8-26 22:09

UL859直发器和卷发器温升测试只换2次湿布就完成测试吗?

本帖最后由 shuaijiachen 于 2016-8-26 22:17 编辑

请教各位大师关于UL859:2012中section 44 的温升测试方法问题。我看标准很有歧义,公司做法跟我的理解好像不一致!
标准原文:
44.1.19 An electrical heating element intended for application to the hair is to be loaded with a moistened
cloth and then operated until the moisture has been evaporated and the heating surface of the unit has
attained a temperature of 204°C (400°F). Following a 2 minute period with the unit disconnected, during
which it is to be reloaded with another moistened cloth, the heating and evaporating operation is to be
conducted a second time. The complete cycle is then to be repeated again. Temperatures are to be
measured throughout the test.


44.1.21 For an appliance in which clips to be applied to the hair are heated by an external heater, the
test is to consist of operation of the appliance until temperatures are constant, with the clips in place on
the heater.


疑问如下:
1,直发器和卷发器的温升测试方法是一样的吗?具体步骤是怎么样的?


2,我看标准理解是:直发器和卷发器测试方法一致,发热板上夹湿布,开始上电,直到蒸发完成且发热板表面温度达到204度时,断电;停止2分钟,期间换上第二块湿布,再次上电,直至温度达到204度,完成测试(总共测试2cycles)。这种理解正确吗?难道只做2cycles/换2次湿布就可以完成温升测试了?好像这样温度都没有达到稳定状态。


3,标准说达到204度后断电,换湿布,那么如果我们的产品发热板表面温度没有达到204度,那什么做测试?


4,为什么44.1.19中是测试2cycles,而44.1.21中却说是要一直工作到温度稳定状态?这两个条款是针对不同产品吗?指哪些产品呢?
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