The green hydraulic circuit drives an emergency generator that automatically supplies emergency AC power to the aircraft electrical system, if all main generators fail. This generator supplies 8 KVA of three-phase 115/200 V 400 Hz power, except when the Ram Air Turbine powers the green hydrauliccircuit, and the aircraft speed is below 260 kt; in this case, the emergency generator supplies 3.5 KVA, leading to some shedding.