电磁兼容性(EMC).第4-5部分:试验和测量技术.电涌抗扰试验

[中文适用范围]： GB/T 17626的本部分规定了设备对由开关和雷电瞬变过电压引起的单极性浪涌(冲击)的抗扰度 要求、试验方法和推荐的试验等级范围，规定了不同环境和安装状态下的几个试验等级。本部分提出的 要求适用于电气和电子设备。 本部分的目的是建立一个共同的基准，以评价电气和电子设备在遭受浪涌(冲击)时的性能。本部 分规定了一个一致的试验方法，以评定设备或系统对规定现象的抗扰度。 注：按GB／Z18509—’2001规定，本部分是电磁兼容基础标准，供各产品委员会使用。GB／Z 18509…—2001还规定， 产品委员会负责确定是否应用本抗扰度试验标准，如果使用，还应负责确定合适的试验等级和性能判据。全 国电磁兼容标准化技术委员会及其分技术委员会愿与产品委员会合作，以评估其产品的特殊抗扰度要求。 本部分规定了： —一试验等级的范围； 一—’试验设备； ——试验配置； 一— 试验程序。 在实验室试验的任务就是要找出设备在规定的工作状态下工作时，对由开关或雷电作用所产生的 有一定危害电平的浪涌(冲击)电压的反应。 本部分不对受试设备耐高压的绝缘能力进行试验。本部分不考虑直击雷的雷电流的直接注入。 [外文原描述]： IEC 61000-4-5:2005 relates to the immunity requirements, test methods, and range of recommended test levels for equipment to unidirectional surges caused by overvoltages from switching and lightning transients. Several test levels are defined which relate to different environment and installation conditions. These requirements are developed for and are applicable to electrical and electronic equipment. The object of this standard is to establish a common reference for evaluating the immunity of electrical and electronic equipment when subjected to surges. The test method documented in this part of IEC 61000 describes a consistent method to assess the immunity of an equipment or system against a defined phenomenon. This standard defines: - a range of test levels; - test equipment; - test setups; - test procedures. The task of the described laboratory test is to find the reaction of the EUT under specified operational conditions, to surge voltages caused by switching and lightning effects at certain threat levels. It is not intended to test the capability of the EUT's insulation to withstand high-voltage stress. Direct injections of lightning currents, i.e, direct lightning strikes, are not considered in this standard. It has the status of a basic EMC publication in accordance with IEC Guide 107. The contents of the corrigendum of October 2009 have been included in this copy.