电磁兼容性 (EMC) 第 3-18 部分：限制 评估应用谐波发射限制的网络特性 连接到 IEC 61000-3-2 和 IEC 61000-3-12 未涵盖的低压配电系统的设备

[中文适用范围]： 本部分IEC 61000作为技术报告，报告了开发一种方法学，用于调整IEC设备发射限值（来自IEC 61000-3-2和IEC 61000-3-12）以适应这些文件未涵盖的地区使用。它指出了现有设备发射限值标准在国际适用性方面的空白，并识别了对评估谐波电压性能重要的公共电力系统特性。 调整上述IEC设备谐波发射标准在特定区域的目的是为了在这些区域的公共电力系统中保持每相75A以下设备的类似电磁兼容性（EMC）。 注：不同国家之间各种电压等级的分界不同（参见IEC 60050-601:1985, 601-01-28）。本文件在提到50 Hz和60 Hz系统电压时使用以下术语： - 低压（LV）指Un ≤ 1 kV； - 中压（MV）指1 kV < Un ≤ 35 kV； - 高压（HV）指35 kV < Un ≤ 230 kV。 EMC要求可能具有经济和社会影响；这些因素在本文件的制定过程中未被考虑。这些因素的考量通常发生在制定和维护发射限值标准的技术委员会工作中。 [外文原描述]： IEC TR 61000-3-18:2024 which is a technical report, reports on the development of a methodology for adapting IEC equipment emission limits from IEC 61000-3-2 and IEC 61000-3-12 for use in regions not covered by these documents. It identifies gaps in the existing equipment emission limit standards concerning their international applicability and identifies public power system characteristics important for the evaluation of harmonic voltage performance. The purpose of adapting the above-mentioned IEC equipment harmonic emission standards in a particular region is to maintain similar electromagnetic compatibility (EMC) of equipment up to 75 A per phase in the public power systems in those regions. NOTE The boundaries between the various voltage levels differ amongst different countries (see IEC 60050‑601:1985, 601-01-28). This document uses the following terms when referring to 50 Hz and 60 Hz system voltages: - low voltage (LV) refers to Un ≤ 1 kV; - medium voltage (MV) refers to 1 kV < Un ≤ 35 kV; - high voltage (HV) refers to 35 kV < Un ≤ 230 kV. EMC requirements can have economic and societal impacts; these have not been considered in the development of this document. The consideration of these factors generally occurs in the technical committees working on development and maintenance of emission limit standards.