本标准定义了抗扰度试验方法和范围 电气和电子设备的首选测试水平 连接到用于电压骤降的低压电源网络， 短时间中断和电压变化。它适用于 具有额定输入电流的电气和电子设备 每相不超过16安。它不适用于电气和 连接到直流网络或400赫兹交流电的电子设备。 网络。

This standard defines the immunity test methods and range of preferred test levels for electrical and electronic equipment connected to low voltage power supply networks for voltages dips, short interruptions, and voltage variations. It applies to electrical and electronic equipment having a rated input current not exceeding 16 A per phase. It does not apply to electrical and electronic equipment for connection to d.c. networks or 400 Hz a.c. networks.