The utility model relates to a lever apparatus is stepped on to all insulation 35kV cable, including pole and threephase cable, the threephase cable is equipped with fixed the setting up on the pole of strain clamp of strain clamp insulating boot through the package, be equipped with the cross arm support of lead wire under the threephase cable on the pole, the cross arm support includes cross arm insulator, the threephase cable that the cover was equipped with insulation support goes between through the cross arm insulator overlap joint down and wraps the umbellate form cable joint electricity of striding that is equipped with the cable joint insulating boot and be connected, insulation support includes the insulation support unit that a plurality of head and the tail link up, it is equipped with horizontal formula arrester on the pole of umbellate form cable joint top to stride, horizontal formula arrester includes that arrester earthing terminal and package are equipped with the arrester high -pressure side of arrester insulating boot, it is equipped with the ground connection link that ground connection link insulating boot was established to the package on going between on to stride umbellate form cable joint. The utility model discloses an insulating security in that the mode improvement high voltage transmission lines of insulating boot is established to the high voltage transmission lines coat has the circuit all insulation, the high characteristics of the insulating security performance of high -tension transmission.