Reverse-cutting-edge damage-free wire stripping cutter for high-voltage cable

The invention provides a high-voltage cable reverse-cutting-edge damage-free wire stripping cutter, and relates to the technical field of cable wire stripping cutters. The invention relates to a cable protection device which comprises a three-side ridge knife holder and a single-edge blade, the single-edge blade is connected with the three-side ridge knife holder, the edge of the single-edge blade is arranged upwards, the three-side ridge knife holder comprises two symmetrically arranged protection wings, and the lower surfaces of the protection wings can form a certain radian and are attached to a lower cable. When the cutter is pushed forwards in the cable direction, the cable skin is propped open by the cutter and then makes contact with the cutting edge of the single-edge blade, the cable skin is cut open by the cutting edge arranged upwards, and the protection wings of the cutter adhere to and protect a lower-layer cable at a certain radian so as to prevent the cutter from scratching a lower-layer insula