1、用于放线作业时导、地线上的感应电；To eliminate induce electricity in conductor and grounding wire when releasing wires .

2、使用时安装在张力机的出线侧和牵引机的进线侧，并用两根拉线拉住；Mounted on the outlet side of tensioners or the inlet side of puller ,and drawn by two stay wires .

3、三轮结构，扭簧自动压紧；Tri-sheave mechanism ,compacted automatically .

4、允许电流100A，通过时间0.1秒;Maximum allowable current is 100A,time electrified is 0.1 second.

5、配套接地线25平方。It is recommended that section of mating conductor is 25 mm2