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本帖最后由 shuaijiachen 于 2016-8-26 22:17 编辑 5 D+ J) D4 y( e3 ~9 z- H. v1 ?
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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!8 w& i8 M0 Q: u. @
标准原文:
2 Y* m$ K7 Y0 q' w& z3 s- N3 _/ q- w# S44.1.19 An electrical heating element intended for application to the hair is to be loaded with a moistened
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attained a temperature of 204°C (400°F). Following a 2 minute period with the unit disconnected, during+ {& |$ ~+ n3 N, P! f- M2 D
which it is to be reloaded with another moistened cloth, the heating and evaporating operation is to be
5 U* g! }1 h& I6 U0 econducted a second time. The complete cycle is then to be repeated again. Temperatures are to be, ?4 p: P* j2 o% z
measured throughout the test.' V) z+ d! h! E$ G, K
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44.1.21 For an appliance in which clips to be applied to the hair are heated by an external heater, the
5 r6 C. s, s0 D* I o8 W6 u- }3 Btest is to consist of operation of the appliance until temperatures are constant, with the clips in place on
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疑问如下:) ~+ L$ {) R% [9 P; C! T
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?
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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。
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- }4 _8 q0 \; D) R; l% m* M3,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?
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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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