标准摘要
[中文适用范围]： IEC 62271-208:2025 提供了对高压开关设备和控制设备组件以及预制变电站所产生的外部稳态功率-频率电磁场的评估和记录的实用指导。本文件汇总了对IEC 62271-200和IEC 62271-201所涵盖组件，以及IEC 62271-202所涵盖预制变电站的电场和磁场测量或计算的基本要求。注1：本文档所述方法适用于三相设备，但同样可用于本文档所涵盖的任何单相或多相设备。本文件适用于额定电压在1 kV以上至52 kV之间、功率频率在15 Hz至60 Hz之间的设备。本文档不考虑由谐波或瞬态产生的电磁场，但所描述的方法同样适用于功率频率的谐波场。关于低频电磁场要求和测量的详细通用信息，请参阅IEC 61786-1和IEC 61786-2。本文档适用于安装前在工厂或实验室条件下的评估。电场和磁场可以通过测量或计算进行评估。注2：在可行的情况下，本文档所述方法也可用于现场安装。本文档的范围不包括电磁场的限值或对人体暴露的评估方法。 [外文原描述]： IEC 62271-208:2025 gives practical guidance for the evaluation and documentation of the external steady state power-frequency electromagnetic fields which are generated by HV switchgear and controlgear assemblies and prefabricated substations. Basic requirements to measure or calculate the electric and magnetic fields are summarised for assemblies covered by IEC 62271-200 and IEC 62271-201, and for prefabricated substations covered by IEC 62271-202. NOTE 1 The methods described in this document refer to three-phase equipment. However, the methodology can be used correspondingly for any single- or multi-phase equipment covered by this document. This document applies to equipment rated for voltages above 1 kV up to and including 52 kV and power-frequencies from 15 Hz to 60 Hz. The electromagnetic fields which are generated by harmonics or transients are not considered in this document. However, the methods described are equally applicable to the harmonic fields of the power-frequency. Detailed generic information on requirements and measurements of low-frequency electromagnetic fields is given in IEC 61786-1 and IEC 61786-2. This document covers evaluation under factory or laboratory conditions before installation. The electric and the magnetic fields can be evaluated either by measurements or by calculations. NOTE 2 Where practicable, the methods described in this document can also be used for installations on site. It is not within the scope of this document to specify limit values of electromagnetic fields or methods for the assessment of human exposure.
英文名称High-voltage switchgear and controlgear - Part 208: Methods to quantify the steady state, power-frequency electromagnetic fields generated by HV switchgear assemblies and HV/LV prefabricated substations, both for rated voltages above 1 kV and up to and including 52 kV