Optical fiber has non -conductivity and can be exempted from impact current. However, in order to prevent environmental events (such as animal bite, collision of rocks, rocks, overhead metal attachments, shotgun damage, and other natural and artificial events), the optical cable must have armor components, and there must be, there must be, there must be Metal armor layers, enhanced cores and business copper lines, they are all metal conductors. When the power line is close to the short -circuit or lightning -strike metal component, it will feel the AC electricity or wave current, which will harm personal safety or destroy the line equipment.

Lightning has the trend of searching for impedance impedance paths to delay the neutrality of thunder cloud charge and underground opposite sex charges. When the land or building near the lightning strike, the potential of the lightning point rises, and the optical cable extends far away, the remote