IEC 62271的本部分适用于三相交流高压发电机断路器，以下简称发电机断路器，设计用于室内或室外安装，并在电压高于1kV至38kV的系统上以50Hz和60Hz的频率运行。适用于安装在发电机和变压器端子之间的发电机断路器。与额定电流为10 MVA或更高的发电机和变压器一起使用的发电机断路器相关的要求已被明确涵盖。额定值小于10 MVA的发电机电路和抽水蓄能装置被视为特殊应用，本文件未完全涵盖其要求。本文件也适用于发电机断路器的操作机构及其辅助设备。

This part of IEC 62271 is applicable to three-phase AC high-voltage generator circuit-breakers, hereafter called generator circuit-breakers, designed for indoor or outdoor installation and for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 1 kV and up to 38 kV. It is applicable to generator circuit-breakers that are installed between the generator and the transformer terminals. Requirements relative to generator circuit-breakers intended for use with generators and transformers rated 10 MVA or more are covered specifically. Generator circuits rated less than 10 MVA and pumped-storage installations are considered special applications, and their requirements are not completely covered by this document. This document is also applicable to the operating mechanisms of generator circuit-breakers and to their auxiliary equipment.