The TLD GPU-409-E-CUP-28 Aircraft Ground Power Unit features an optimized 1,846 RPM brushless revolving field generator, which efficiently produces 90 kVA (72 kW) 400 Hz AC and 28V DC power to start and service AC/DC powered aircraft. Designed with operators in mind, the GPU-409 Ground Power Unit’s full-size performance comes in a compact size, allowing for easier handling and better mobility near aircraft while reduced sound levels ensure customer and passenger comfort. Powder-coated aluminum and fiberglass panels that surround a rugged galvanized steel chassis are a durable, yet lightweight alternative to traditional designs. Mobility is enhanced by a rubber torsion axle, tight turn radius fifth-wheel steering, simple direct-acting brakes and a safe nodrop towbar. The unit’s engine can meet U.S. Tier 4i and EURO emission standards. Other engines options are available that will meet the specific regulatory needs of your geographic location.
The GPU-409-E-CUP-28 comes standard with the 28.5 volts DC power output package. The 28V standard option creates dual outputs for a 90 kVA 400 Hz AC and 28 VDC combination aircraft ground power supply.
Includes the following options:
- 004045: 30′ DC GPU Output Cable
- 004044: 30′ AC GPU Output Cable
- TLDOPT00132: Block Heater for Diesel GPUs
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.
Dimensions: 112″ L x 68″ W x 59 H (284 x 173 x 148 cm)
Engine Specifications:
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24 volt starting motor
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Heavy-duty spark arrestor / silencer
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Pusher type fan
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Full-flow lubricating oil filter
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Dry-type air cleaner
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(2) 12-volt batteries
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Pusher-type fan
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Low coolant shutdown
Generator Specifications:
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400 Hz 115/200 volts nominal
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+/- 15% adjustable
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3 phases
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4 wire wye-connected
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Grounded neutral
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Revolving field
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Brushless
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Self-cooling
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Single bearing
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Brushless rotating rectifier assembly
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Direct engine connection
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Transformer rectifier: 28.5 VDC with current limiting – 800 amps continuous, 2000 amps peak.
Electrical Characteristics:
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Meets MIL-STD-704F
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Voltage regulation: +/- 1% over full load range
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Voltage transient: +/- 13.8% no load to full load
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Voltage transient recovery time: +/- 1% of nominal voltage within 100 milliseconds
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Voltage modulation: 0.5% at steady state
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Phase balance: <1% at balanced 3 phase load. <4% at 1/3 load on 1 phase and no-load on 2 phases
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Harmonic content: THD <2%. Any 1 phase harmonic <1.5% at 0.8 PF linear load
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Crest factor: 1.414 +/- 0.07
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Frequency regulation: +/-0.1% no-load to full-load and overload
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Frequency transient: +/- 2.5% no-load to full load
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Frequency transient recovery time: +/- 0.5% of nominal frequency within 1.5 seconds
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Overload rating: 125% for 5 minutes
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Line drop compensation: Increases up to 10 VAC
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L-N to compensate for aircraft cable voltage drop
Chassis Characteristics:
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Easy access to all components
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Side mounted cable trays with integral rollers
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Fuel tank 46 gallons for over 8 hrs of run time
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5th wheel steering with no-drop towbar brake
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Forklift pockets and tie down rings
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Cable plug holders
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