标准摘要
[中文适用范围]: 本部分 IEC 62271 适用于刚性高压气体绝缘传输线(GIL),其绝缘至少部分由除大气压力下的空气以外的绝缘气体或气体混合物提供,用于额定电压超过 52 kV 的交流电,以及服务频率高达并包括 60 Hz。 本文件适用于 IEC 62271-203 未涵盖 GIL 应用的情况(参见注 3)。 在高压气体绝缘传输线的每一端,使用特定元件连接高压气体绝缘传输线与其他设备,如套管、电力变压器或电抗器、电缆盒、金属封闭式避雷器、电压互感器或 GIS,这些设备由其自身的规范涵盖。 除非另有规定,高压气体绝缘传输线设计用于正常服务条件下使用。 注 1:在本文档中,术语“高压气体绝缘传输线”缩写为“GIL”。 注 2:在本文档中,“气体”一词指气体或气体混合物,由制造商定义。 注 3:GIL 应用示例: - 高压气体绝缘传输线全部或部分直接埋设; - 高压气体绝缘传输线全部或部分位于公众可进入的区域; - 高压气体绝缘传输线较长(通常超过 500 米),且典型气体隔室长度超过 GIS 技术的常见做法。 [外文原描述]: IEC 62271-204:2022 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user with a comprehensive content of the Standard. IEC 62271-204:2022 EXV includes the content of the references made to IEC 62271-1:2017+AMD1:2021 CSV and IEC 62271-203:2022. IEC 62271-204:2022 applies to rigid HV gas‑insulated transmission lines (GIL) in which the insulation is obtained, at least partly, by an insulating gas or gas mixture other than air at atmospheric pressure, for alternating current of rated voltages above 52 kV, and for service frequencies up to and including 60 Hz. This second edition cancels and replaces the first edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - update to be in line with IEC 62271-1:2017 and alignment of the voltage ratings and the test voltages. - addition of new information for welds on pressurized parts and gas tightness.
英文名称High-voltage switchgear and controlgear - Part 204: Rigid gas-insulated transmission lines for rated voltage above 52 kV