The TLD ACE-4120 is a self-contained, diesel engine driven, trailer mounted ground power unit. This 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. The TLD ACE-4120 provides continuous 120 kVA power, whereas the TLD ACE-4140 puts out 140 kVA. Victory Ground Support Equipment offers a wide range of reconditioned, load-tested, used aircraft ground power units for sale or for rent. Please contact us today for more details.