GBT 2424.1-2005 电工电子产品环境试验 高温低温试验导则

ICS19.040K04IOjMj黯中华人民共和国国家标准GB/T2424.1-2005/IEC60068-3-1:1974代替GB/T2424.1-1989电工电子产品环境试验高温低温试验导则Environmentaltestingforelectricandelectronicproducts-Guidanceforhightemperatureandlowtemperaturetests(IEC60068-3-1:1974,Basicenvironmentaltestingprocedures-Part3:Backgroundinformation-Section1:ColdanddryheattestsandIEC60068-3-IA:1978,Firstsupplementtopublication60068-3-1,IDT)2005-03-03发布2005-08-01实施中华人民共和国国家质量监督检验检疫总局中国国家标准化管理委员会发布www.bzfxw.comGB/T2424.1-2005/IEC60068-3-1:1974目次前言·...··············································，······················⋯⋯m1引言···············································································································⋯⋯12不同试验规程的依据·······，················································································⋯⋯23试验箱············································································································⋯⋯44测量·············································································································⋯⋯5对IEC60068-3-1;1974《基本环境试验规程第3部分:背景材料第1节:寒冷和干热试验》的第一次补充文件······················································，····，································⋯⋯6附录A(资料性附录)无强迫空气循环试验时试验箱大小对试验样品表面温度的影响·········⋯⋯8附录B(资料性附录)气流对试验箱条件和试验样品表面温度的影响······························⋯⋯10附录C(资料性附录)样品辐射系数对温度升高的影响··············································⋯⋯14附录D(资料性附录)组件线端尺寸和材料对其表面温度的影响····································⋯⋯15附录E(资料性附录)热传输计算及列线图······························································⋯⋯16附录F(资料性附录)普通材料的热导率··································································⋯⋯22附录G(资料性附录)温度的测量··········································································⋯⋯23附录H(资料性附录)风速的测量·········································································，⋯⋯25附正I(资料性附录)辐射系数的测量····················································，···············⋯⋯26附r1:J(资料性附录)低温和高温试验方法分类总方框图···········································⋯⋯33www.bzfxw.comGB/T2424.1-2005/IEC60068-3-1:1974月1i舌本部分是GB/T2424《电工电子产