标准摘要
[中文适用范围]: 该标准涉及 0 kHz 至 9 kHz 频率范围内的传导干扰,特别针对电源信号系统可扩展至 148.5 kHz。它提供了标称电压高达 420 V、单相或 690 V、三相、标称频率为 50 Hz 或 60 Hz 的公共低压交流配电系统的兼容性级别。本标准中规定的兼容性级别适用于公共耦合点。在从上述系统接收供电的设备的电源输入端子处,干扰的严重程度在很大程度上可以被认为与公共耦合点处的水平相同。在某些情况下,情况并非如此,特别是在专门为特定装置供电的长线路的情况下,或者在设备构成其一部分的装置内产生或放大的干扰的情况下。兼容性级别针对公共低压供电系统中可能出现的电磁骚扰类型进行了规定,以指导: - 对公共供电系统中的骚扰发射设定的限制(包括 3.1.5 中定义的规划级别) )。 - 产品委员会和其他机构为暴露于公共供电系统中存在的传导干扰的设备设定的抗扰度限制。考虑的干扰现象有: - 电压波动和闪烁; - 50 阶以下的谐波; - 间谐波高达 50 次谐波; - 较高频率(高于 50 次谐波)的电压失真; - 电压骤降和短时供电中断; - 电压不平衡; - 瞬态过电压; ——电源频率变化; - 直流分量; - 电源信号。大多数这些现象在 IEC 61000-2-1 中都有描述。如果尚无法建立兼容性级别,则会提供一些信息。 [外文原描述]: This standard is concerned with conducted disturbances in the frequency range from 0 kHz to 9 kHz, with an extension up to 148,5 kHz specifically for mains signalling systems. It gives compatibility levels for public low voltage a.c. distribution systems having a nominal voltage up to 420 V, single-phase or 690 V, three-phase and a nominal frequency of 50 Hz or 60 Hz. Compatibility levels are specified for electromagnetic disturbances of the types which can be expected in public low voltage power supply systems, for guidance in: - the limits to be set for disturbance emission into public power supply systems; - the immunity limits to be set by product committees and others for the equipment exposed to the conducted disturbances present in public power supply systems.
英文名称Electromagnetic compatibility (EMC) - Part 2-2: Environment - Compatibility levels for low-frequency conducted disturbances and signalling in public low-voltage power supply systems