The RB-14/28-25 Series Aircraft Ramp Power Supply is an aircraft flight line service and maintenance tool. The APU unit has a filtered 14 or 28 volt DC power supply with an amperage capability up to 25 amperes for testing of aircraft electrical systems. This ramp or hangar accessory is an absolute must for avionics service, gear and flap actuator exercising and other electrical system service.Version R-14/28-25 is designed as a power supply only unit with a 60Hz frequency.
