Prevention apparatus for drooping of power cable

A prevention apparatus for drooping of a power cable is provided to allow a user to perform maintenance and repair the transmission line by sensing drooping of the transmission line. A body member(10) is assembled by the coupling member while being between the top and lower part of a transmission line. A fixed member comprises a fixture(31) and a pair of a support stand(33) which is arrange at the both side of the fixture. The fixed member is connected with the upper part of the transmission line through a fixed assembly and a support assembly. A movable member(40) comprises a slider(44) and a pair of the guide(46), the slide controls a sensing member(60). A pair of guide is arranged at the both sides of slider, and the movable member is connected to the lower part transmission line. The spring member is assembled the circumstance of the slider of the movable member and the guide.