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本帖最后由 shuaijiachen 于 2016-8-26 22:17 编辑 ( `, w' h) T P" D# d7 a1 O+ D
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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!2 {: A$ M& d6 m! ]
标准原文:! u2 v- ?3 t0 }& W& I
44.1.19 An electrical heating element intended for application to the hair is to be loaded with a moistened
7 c9 j6 ^8 E: }8 w2 f9 Qcloth and then operated until the moisture has been evaporated and the heating surface of the unit has( @0 \) w7 p& C4 f
attained a temperature of 204°C (400°F). Following a 2 minute period with the unit disconnected, during% w8 d1 q/ J2 |( n# {
which it is to be reloaded with another moistened cloth, the heating and evaporating operation is to be& ?3 b. c- B4 t/ `& X b, t) Q/ X5 S1 G h
conducted a second time. The complete cycle is then to be repeated again. Temperatures are to be3 ^5 S8 l) h0 A' G3 c6 ?+ u
measured throughout the test." `8 w& i, [ z
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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
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. d, n/ J1 x+ M# L" n疑问如下:
+ ^2 E. i8 {& }( X; r5 j$ z1,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?9 J( b! l2 R" J6 ?/ |% n
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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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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?7 D F; G6 f8 r$ S9 }6 \# W
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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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