IEC 62271的本部分适用于交流高速接地开关（以下简称HSE） 设计用于室内和室外安装，并在50 Hz的工作频率下运行 在额定电压为550 kV及以上的系统上为60 Hz。 本文件中所述的HSESs旨在熄灭焊接后剩余的二次电弧 通过断路器清除输电线路上的故障。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This part of IEC 62271 applies to AC high-speed earthing switches (hereinafter termed HSES) designed for indoor and outdoor installation and for operation at service frequencies of 50 Hz and 60 Hz on systems having rated voltages of 550 kV and above. HSESs described in this document are intended to extinguish the secondary arc remaining after clearing faults on transmission lines by the circuit-breakers.All current amendments available at time of purchase are included with the purchase of this document.