Specially designed at conception for military use, the Guinault compact ground power units are the perfect solution for providing 400 Hz or 28 VDC electrical power for regional aircraft. The compact units offer the strong performance of the dual voltage Guinault alternator, which makes it possible to use an oil-cooled Deutz Compact engine, without water cooling. Maintenance and fuel consumption are reduced. The 9-phase Guinault alternator provides a high quality direct current (18 pulses).