GPU:(Ground power unit)
The ground power unit that is available at the airport in both mobile and station forms to supply the required power to the aircraft, the required power of the aircraft is 115 volts three-phase 400 Hz.
380V 50Hz mains power is transmitted to a 50Hz switchboard and converted to a 400Hz 115 three-phase by a converter and plugged into a 25-meter cable (male and female are inverted in the plane. The plane is male and female is plug). Connects to the external power section of the aircraft.
In narrow body aircraft
It is possible to connect a plug.
Wide body aircraft
It is possible to connect two plugs.