+ 1 (208) 378-9888 

TLD GPU-28-CUP 28V DC Diesel Ground Power Unit

SKU GPU-28-CUP Categories , , ,
Legacy AERO Product ID: 97
Brands: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

This Item Will Be Quoted.

Featuring electronic controls with a digital display, the GPU-28-CUP 28.5V DC Ground Power Unit is a very rugged, compact and silent Ground Power Unit, which provides 800 amps continuous and 2000 amps peak to provide power supply for starting aircraft. Its large engine ensures a good performance in the worst overload applications. The TLD GPU-28 features a brushless revolving field generator, rubber torsion axle-mounted chassis of rugged galvanized steel construction with fifth wheel steering and powdercoated sheet metal panels. The GPU-28 meets U.S. EPA 40CFR 1039.625 and California 13 CCR 2423(d) emissions standards for nonroad engines.

Generator Specifications (generator rectifier assembly) – TLD generator rectifier assembly directly provides 28.5VDC output. The generator has 2 sets of 400HZ main stator wings, one set connected in Delta and the other a low voltage AC generator (around 21 to 22 VAC). It is brushless, revolving field, self-cooling, and single bearing with rotating rectifier assembly.

Compares to Tronair/Arvico 28.5V DC Diesel GPU, part numbers 112820C, 112820C1, 112820C2, and 112820CS.

Dimensions: 92.36" L x 57.09" W x 65.35" H (235 x 145 x 165 cm)

Weight: 4,233 lbs (1,920 kg)

  • Beacon: Amber or red, flashing or rotating
  • Low fuel warning
  • Low fuel warning with shutdown or idle
  • Engine block heater
  • Fuel filter/water separator with heater
  • Hush kit
  • Rub rails
  • 4/0 DC output cable with aircraft plug, 30-feet long
  • 4/0 DC output cable with aircraft plug, 40-feet long

Engine Specifications:

  • Cummins QSB4.5 130HP
  • 24 volt starting motor
  • Heavy-duty spark arrestor / silencer
  • Full-flow lubricating oil filter
  • Pusher type fan
  • Dry-type air cleaner
  • (2) 12-volt batteries
  • Full flow fuel filter
  • Low coolant shutdown
  • Meets U.S. EPA 40CFR 1039.625 and California 13 CCR 2423(d) emissions standards for nonroad engines.

Generator Controls: An automatic voltage regulator monitors the generator output and provides voltage regulation and line drop compensation. Control system provides high voltage and low voltage protection. Protection value & time delay can be set per customer’s request.

  • High voltage protection: 31.5VDC, 7S
  • Low voltage protection: 20 VDC, 7S

28.5VDC Control Switches & Gauges:

  • Voltmeter
  • Ammeter
  • Fuel Gauge
  • Voltage adjustment rheostat
  • Line drop adjustment rheostat
  • Idle / full speed toggle switch
  • DC output cable power switch
  • Ignition switch and emergency pushbutton
  • Engine related warning indicators

Engine Controls: Modern diesel electronic engines with electronic engine governors provide precise frequency regulation and fast transient response. Engine protection such as low oil pressure, high coolant temperature, and over speed protection are programmed into the engine electronic control module. An engine diagnostic connector is provided for communicating with the engine. Automatic engine cool down and emergency shutdown are standard engine controls. Engine operating parameters are displayed with electronic gauges via SAE J1939 Controller Area Network, which include:

  • Engine hours
  • Engine RPM
  • System Voltage
  • Oil Pressure
  • Coolant temperature
  • % Engine load at the current RPM
  • Active and stored service codes
  • View engine configuration parameters

Electrical Characteristics:

  • Voltage regulation: 26V ~29V over full range of generator loading.
  • Voltage transient: 19V ~35V with 5% to 85% load
  • Voltage transient recovery time: above sudden load within 250 milliseconds.
  • Voltage pulsation: 2V at steady state

Chassis Characteristics:

  • Easy access to all components
  • Control panel – Side mounted with rain shield
  • Fuel tank – 32.5 gallons for over 8 hrs of running time
  • Mechanical brake – towbar operated
  • Fifth wheel steering
  • Tires - Front & Rear identical
  • Forklift port

Additional information

Translate »