The utility model belongs to the power equipment field especially relates to one kind and supplies the electrified locking style insulated hanger cluster who disconnects the drainage and use of four to six-tenehs kilovolt earth potential. Including the composite insulator, the swing joint head is installed on the top of composite insulator, and the insulating lifting hook of locking style is installed to the bottom of composite insulator, the insulating lifting hook of said locking style includes that bottom plate and composite insulator are perpendicular, and the one end of bottom plate sets up the connecting block perpendicularly, through the connecting block connection composite insulator, the other end of said bottom plate sets up to arc and the back formation of connecting block opposition are the draw-in groove structure, sets up the round hole at the connecting block and is used for passing bolt style insulator spindle, and the end screw thread connection no. 1 of the insulator spindle in the draw-in groove has the movable block of concave surface, and the concave surface and the arc of movable block form circular space and be used for passing the drainage line. The utility model discloses have and tightly to lock the drainage, the increased security, the optional is won in succession and is moved towards back locking, gives the work improvement of connecting the drainage convenient, improves the accomplishment ratio.