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本帖最后由 shuaijiachen 于 2016-8-26 22:17 编辑
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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 N1 u0 B+ O* |% ^0 {0 l. j2 d
标准原文:4 d) N% A+ V+ ?
44.1.19 An electrical heating element intended for application to the hair is to be loaded with a moistened# ?2 r0 N! `; P7 m4 U& j' Y
cloth and then operated until the moisture has been evaporated and the heating surface of the unit has
! p: a( q' R; k3 N* ^# b0 Battained a temperature of 204°C (400°F). Following a 2 minute period with the unit disconnected, during
6 |2 P9 ], |# C \, E% bwhich it is to be reloaded with another moistened cloth, the heating and evaporating operation is to be
! m) M9 g) k, }- Gconducted a second time. The complete cycle is then to be repeated again. Temperatures are to be
) e2 L4 m' k3 F+ z. @9 ]6 Omeasured throughout the test.8 [- d% P7 ?$ P- G7 M0 M9 R8 {
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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. U3 G; Z5 O/ [: ]2 J
test is to consist of operation of the appliance until temperatures are constant, with the clips in place on" B E* [% Z$ s1 l1 m% A( K) Q
the heater.
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, I. j. ^7 ]9 k6 S疑问如下:
! q8 d. X# V$ c Y1,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?) Z f, P7 L7 ~4 y O d" v
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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?
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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?6 ?& W6 ?% S- B$ T, u6 {0 q# e0 w
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