The invention discloses a low-residual-
voltage protection device, and particularly relates to the technical field of
power transmission protection devices, the low-residual-
voltage protection device comprises a residual-
voltage protection device, the upper surface of the residual-voltage protection device is in
lap joint with the lower surface of a top pressing plate, and a positioning groove is formed in the upper surface of the residual-voltage protection device; the top pressing plate is located in a positioning groove formed in the upper surface of the
residual voltage protection device. According to the
residual voltage protection device, by arranging the positioning toothed plates, the winding cable and the side pressing plate, after positioning is completed, the two positioning toothed plates fix the position of the side plate, meanwhile, the driving device can fix the driving shaft through internal parts of the driving device, and therefore the stability of the side pressing plate when the
residual voltage protection device is fixed is guaranteed, and in the
actual use process, the residual voltage protection device can be fixed more stably. The condition that the connecting part of the residual voltage protection device and the
bus is loosened and falls off due to shaking after the residual voltage protection device is installed is avoided, it is guaranteed that the residual voltage protection device is not prone to
short circuit in the using process, and the actual using effect of the protection device is guaranteed.