The ground power interface device is a supporting product for the primary power subsystem of the aircraft's power supply system. It is installed in the middle and lower equipment compartment of the aircraft, and is responsible for providing ground power interfaces for the aircraft, indicating and controlling the working status of the ground power, and connecting the ground power to the onboard power grid.

The ground power interface device is a supporting product for the primary power subsystem of the aircraft's power supply system, installed in the middle and lower equipment compartment of the aircraft, providing ground power interfaces for the aircraft, indicating the working status of the ground power, and controlling the connection of ground power to the onboard power grid.