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TLD GPU-4090-CUT 90 kVA Skid/Tractor-Mounted Ground Power Unit

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Prices shown are for products sold in USA only. For pricing in regions outside of USA, please request a quote.

The Tractor-Mounted Skid TLD GPU-4090-CUT Diesel Ground Power Unit features a brushless revolving field generator that creates 90 kVA 400 Hz AC power output. The unit meets U.S. (Tier 3) and EURO (Com 3) emission standards, and is a specified option for TLD TPX/TMX aircraft tractors

The GPU-4090-CUT is available with an optional 28.5 volts DC power output package, part number GPU-4090-CUT-28. The 28V option creates dual outputs for a 90 kVA 400 Hz AC and 28V DC combination aircraft ground power supply.

NOTE: Sales territory restrictions may apply, please contact us for more information.

NSN: 6115-01-061-6610

Compares to Jetall JTL90D,  Tug Technologies/Davco GP400-100, FCX Systems GPU090-C-1.

Generator Controls:

Digital-type, automatic voltage regulator that features voltage regulation, generator fault protection, and a generator operating parameter display. The voltage regulator monitors the 400 Hz output when 400 Hz is in use. The voltage regulator provides line drop compensation on 400 Hz. The voltage regulator displays the generator output operating parameters such as voltage, current, and frequency, digitally on a backlit LCD. The voltage regulator is programmed to provide generator output fault protection in the following settings:

  • Over frequency: 420 Hz in 5 seconds
  • Under frequency: 380 Hz in 7 seconds
  • Over voltage: 130 volts in 2 seconds
  • Under voltage: 100 volts in 7 seconds
  • Overload: 125% of rated load for 5 minutes

The voltage regulator displays and latches the fault if any of the above should occur.

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. Engine operating parameters are displayed with electronic gages 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

Automatic engine cool down and emergency shutdown are standard engine controls.

Dimensions: 79" L x 40" W x 52” H (200 x 100 x 130 cm)

Weight: 3,748 lbs. (1,700 kg)

  • Transformer rectifier: 28.5 VDC with current limiting - 1000 amps continuous, 2500 amps peak. Can be field installed.
  • Second 400 Hz output
  • Cold weather starting kit
  • Fuel filter/water separator with heater
  • TMX-450 mounted platform
  • Working light
  • Separate control box with control harness extension.

Engine Specifications:

  • Cummins QSB4.5, TIER 3/COM 3
  • 24 volt starting motor
  • Heavy-duty spark arrestor/silencer
  • Intergrated cooling system
  • Low coolant shutdown
  • Full-flow lubricating oil filter
  • Dry-type air cleaner
  • (2) 12-volt batteries
  • Full flow fuel filter

Generator Specifications:

  • 400 Hz 115/200 volts nominal
  • +/- 15% adjustable
  • 3 phases
  • 4 wire wye-connected
  • Grounded neutral
  • Revolving field
  • Brushless
  • Self-cooling
  • Single bearing
  • Brushless rotating rectifier assembly
  • Directly connected to the engine

Electrical Characteristics:

  • Voltage regulation: +/- 1% maximum over full range of generator loading.
  • Voltage transient: +/- 13.8% no load to full load.
  • Voltage transient recovery time: +/- 1% of nominal voltage within 100 milliseconds.
  • Voltage modulation: 0.5% at steady state.
  • Phase balance: Not to exceed 1% at balanced 3- phase load. Not to exceed 4% at 1/3 load on 1 phase and no-load on the other 2 phases.
  • Harmonic content: Total harmonic distortion not to exceed 2%. Any single phase harmonic not to exceed 1.5% at 0.8 P.F. linear load.
  • Crest factor: 1.414 +/- 0.07
  • Frequency regulation: +/- 0.1% no-load to full-load and overload.
  • Frequency transient: +/- 2.5% no-load to full load
  • Frequency transient recovery time: +/- 0.5% of nominal frequency within 1.5 seconds.
  • Overload rating: 125% for 5 minutes.
  • Line drop compensation: Provides a voltage increase of 10 volts, line to neutral, to compensate for voltage drop in the aircraft cable assembly.

Chassis Characteristics:

  • No batteries (supplied by tractors)
  • No Fuel tank (supplied by tractors)
  • 30-foot AC cable assembly
  • Cable hooks
  • Battery switch
  • Compact design with cover
  • Galvanized frame
  • Big maintenance doors

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