本指南提供了与气体绝缘变电站（GIS）和设备的规划、设计、测试、安装、操作和维护特别相关的信息。本指南旨在补充IEEE标准C37。122（TM）。 本指南适用于52 kV以上的所有GIS。然而，所涵盖主题的重要性因应用类别而异。例如，与先进现场测试技术和极快瞬变（VFT）相关的问题对超高压（EHV）GIS特别重要。

This guide provides information of special relevance to planning, design, testing, installation, operation and maintenance of gas-insulated substations (GISs) and equipment. This guide is intended to supplement IEEE Std C37.122(TM). This guide is applicable to all GISs above 52 kV. However, the importance of topics covered varies with application category. For example, the issues related to advanced field test techniques and very fast transients (VFT) are of particular interest for extra-high voltage (EHV) GISs.