A cooling system (300; 400) for a plurality of conductive cables (310) in a gas turbine engine (110) includes a cooling source and an electric motor (210) disposed in a tail cone (122). The cooling source may comprise an electric fan (360) or an oil pump (...

Embodiments of the present invention have the technical effect of automatically testing an overspeed protection system associated with multiple powerplant machines of a powerplant (100). An embodiment of the present invention may automatically test the ove...