BS EN IEC 62271-214:2024
高压开关设备和控制设备 额定电压1kV以上至52kV(含)的交流金属封闭柱式开关设备和控制设备的内部电弧分类
High-voltage switchgear and controlgear - Internal arc classification for AC metal-enclosed pole-mounted switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV