The TLD GPU-4000 is a self-contained, diesel engine driven, aircraft ground power unit. The unit is designed to supply regulated 400 Hz electrical power to a parked aircraft for operation of the aircraft’s electrical equipment when the on-board generators are not running. Depening on the TLD GPU-4000 options, each unit is capable of providing 90 kVA, 120 kVA, 140 kVA, up to 180 kVA continuously. Victory Ground Support Equipment offers many used, reconditioned ground power units for sale or rent. Please contact us today for more information.