In order to prevent the overhead line hanging from the power line due to damage caused by vibration, line protection line installed in the line wire clip, so that the rigidity of the clip near the increase in the wire due to vibration and bending stress and wear stress, The vibration resistance.

　　There are two types of tapered and pre-twisted wire. China's use of pre-twisted wire protection line for anti-vibration protection measures, pre-twisted wire has been included in the gold products, is a kind of aluminum magnesium silicon alloy wire.