A New Type of Motor-Driven Grounding Clamp for EHV Transmission Lines
According to the defect of current grounding clamp for extra high voltage (EHV) transmission lines, a new type of grounding clamp based on gear pair-screw pair-lever three classes force amplifier is introduced, which can clamp and loose by a inner-motor through remote control and can loose by manual operation when it is out of control. The output torque formula of motor and its value are worked out by force analysis. This grounding clamp has the ad- vantages of large clamping force, high efficiency and security, and has a good application prospect.