And it is certified that the device is very useful to prevent insulated overhead line breakage and insulator damage from lightning overvoltage faults.

• 作为配电线路中的架空绝缘电缆的过电压保护装置，可有效地防止雷害造成的断线、绝缘子损坏等事故，避免因断路器动作中断供电而影响供电可靠性。