Generator set PT insulation monitoring device

The utility model belongs to the technical field of generators, and particularly relates to a generator set PT insulation monitoring device which comprises a box body, a cover plate is rotatably connected to the upper end of the box body, a buckle is connected between the cover plate and the box body, a handle is installed on the cover plate, four concentric-square-shaped plates are symmetrically installed on the bottom wall of an inner cavity of the box body, and the four concentric-square-shaped plates are symmetrically installed on the bottom wall of the inner cavity of the box body. The device comprises four concentric-square-shaped plates, sliding plates are arranged in the four concentric-square-shaped plates in a sliding mode, damping springs are installed on the bottom walls of inner cavities of the four concentric-square-shaped plates, the four damping springs are connected with the four sliding plates correspondingly, the upper ends of the two sliding plates located in the same vertical direction ar