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本帖最后由 shuaijiachen 于 2016-8-26 22:17 编辑 8 P4 D: w7 d& ]. L; z
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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！4 R2 }2 k$ O" t8 Y
标准原文：
f$ P4 S9 }7 ^4 z44.1.19 An electrical heating element intended for application to the hair is to be loaded with a moistened( P% m8 u( @+ [ x7 y; G
cloth and then operated until the moisture has been evaporated and the heating surface of the unit has" O) b! V( ]# T" F
attained a temperature of 204°C (400°F). Following a 2 minute period with the unit disconnected, during
6 T* ]* n$ N5 ]. wwhich it is to be reloaded with another moistened cloth, the heating and evaporating operation is to be
' M' [+ J' O" C8 C! T' t# U- h# Yconducted a second time. The complete cycle is then to be repeated again. Temperatures are to be8 k: }* c& _) X- ]$ J& ]
measured throughout the test.. Q5 S6 q) [5 b& o4 F
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7 X2 z* X3 w! b1 o7 G44.1.21 For an appliance in which clips to be applied to the hair are heated by an external heater, the
2 r! @, z, i Q( o& Ctest is to consist of operation of the appliance until temperatures are constant, with the clips in place on2 g# }1 y" n# \
the heater.
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疑问如下：
+ {. ]0 n7 X+ @) [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。$ C! [4 V' n/ f9 M' g( \* M ?
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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？; @2 R7 k8 [" ^8 g& a: e
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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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发表于 2016-8-26 22:09
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