标准摘要
[中文适用范围]： 本部分 IEC 62271 规定了额定电压高于 1 kV 至 52 kV 及以下、工作频率 60 Hz 及以下的交流金属封闭杆式开关设备和控制设备的内部分类要求。 本文件适用于分配内部分类等级的三相、两相和单相开放式终端设备。外壳可包括固定和可移动组件，并可填充流体（液体或气体）以提供绝缘。 注 1：IAC 分类考虑了高压开关设备和控制设备的安装布置以及操作人员的工作区域。 注 2：在本文件中，高压（IEC 60050-601:1985, 601-01-27）是指额定电压高于 1 000 V。然而，中压（IEC 60050-601:1985, 601-01-28）通常用于配电系统，电压高于 1 kV，一般应用于 52 kV 及以下；参见 [1]。 本文件不排除其他设备可能包含在同一外壳中。在这种情况下，应考虑该设备对开关设备和控制设备的任何可能影响。 [外文原描述]： IEC 62271-214:2024 specifies requirements for internal arc classification of AC metal-enclosed pole-mounted switchgear and controlgear with rated voltages above 1 kV and up to and including 52 kV with service frequencies up to and including 60 Hz. This document is applicable to three-phase, two-phase and single-phase open terminal equipment for which an internal arc classification is assigned. Enclosures may include fixed and removable components and may be filled with fluid (liquid or gas) to provide insulation. This second edition cancels and replaces the first edition published in 2019. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) indicators positioning update; b) neutral earthing connection of the test circuit for three-phase tests; c) general review for consistency with IEC 62271-200, Ed.3.0:2021. The content of the corrigendum 1 (2025-04) has been included in this copy.
英文名称High-voltage switchgear and controlgear - Part 214: Internal arc classification for AC metal-enclosed pole-mounted switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV