本标准适用于设计用于室外安装、额定功率频率为50 Hz和60 Hz、额定最大电压为15.5 kV至245 kV的交流电路开关。它仅适用于三相系统中使用的三极电路开关。本标准也适用于电路开关的操作装置及其辅助设备。它包括电路开关的额定值基础、首选额定值和测试程序。

This standard is applicable to ac circuit switchers designed for outdoor installation and for rated power frequencies of 50 Hz and 60 Hz and rated maximum voltages of 15.5 kV through 245 kV. It is applicable only to three-pole circuit switchers for use in three-phase systems. This standard is also applicable to the operating devices of circuit switchers and to their auxiliary equipment. It includes the basis of rating, preferred ratings and test procedures for circuit switchers.