个人计算机电源端口浪涌抗扰度试验  被引量:1

Surge Immunity Test of Personal Computer at Power Lines

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作  者:刘芳 

机构地区:[1]华中科技大学文华学院,武汉430074

出  处:《电测与仪表》2009年第S2期134-137,共4页Electrical Measurement & Instrumentation

摘  要:雷电间接效应引起的浪涌是造成电气电子设备损害的重要原因之一,本文研究电气电子设备在供电电源遭受浪涌骚扰下的电磁兼容问题,分析了IEC 61000-4-5中规定的浪涌抗扰度试验方法与设备,并在某品牌计算机的电源端口进行浪涌抗扰度测试,得到不同浪涌耦合模式以及试验等级下被试计算机的浪涌抗扰度水平,结果表明线-线耦合以及在交流电源90°和270°施加浪涌时,对计算机的考核最严酷。本文研究结论对计算机等电子设备的雷电防护设计亦具有一定的参考价值。Transient overvoltages on the mains due to indirect effect of lightning are increasingly recognized as one of the most important threat to electronic equipment.This paper deals with problems arising at Electromagnetic Compatibility(EMC) in relation to the interference caused by surge voltages and currents.For this purpose,the IEC 61000 -4 -5 Standard has been instituted,describing the procedure of testing and verification of a device for immunity against surge.Specifically,measurements and tests were performed on an investigation of surge immunity of a personal computer at power lines.Response of the tested computer under different coupling modes of the surges and different test levers were presented.The result implied that when the surges were applied between phases or the phase shifting was 90°or 270°,the tested personal computer s surge immunity was lower.The information in this paper can also be used in the lightning protection design by the computer manufacturer.

关 键 词:浪涌 抗扰度试验 组合波发生器 耦合/去耦网络 电磁兼容 

分 类 号:TP306[自动化与计算机技术—计算机系统结构]

 

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