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输电线路(GIL),其中绝缘至少部分由非腐蚀性绝缘气体、除大气压下的空气以外的绝缘气体或气体混合物提供,用于额定电压高于52kV的交流电,以及工作频率高达并包括60Hz。 本文件旨在国际标准适用于 IEC 62271-203 未涵盖 GIL 应用的情况(见注3)。 在高压气体绝缘输电线路的每一端,可使用特定元件用于高压气体绝缘输电线路与其他设备(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)之间的连接,这些设备由其自身规范涵盖。 除非另有规定,高压气体绝缘输电线路设计用于正常工作条件下使用。 注1:本文档中,“高压气体绝缘输电线路”缩写为“GIL”。 注2:本文档中,“气体”指气体或气体混合物,由制造商定义。 注3:GIL应用示例: - 高压气体绝缘输电线路全部或部分直接埋设; - 高压气体绝缘输电线路全部或部分位于公共可进入区域; - 高压气体绝缘输电线路较长(通常超过500m)且典型气体间隔长度超过GIS技术的常见实践。 [外文原描述]: IEC 62271-204:2022 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. 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