The TLD GPU-4120-E-CUP 400 Hz Ground Power Unit features a brushless revolving field generator, rubber torsion axle-mounted chassis of rugged galvanized steel construction with fifth wheel steering and powder-coated sheet metal panels. The unit meets U.S. and EURO emission standards.

The GPU-4120-E-CUP is available with an optional 28.5 volts DC power output package, part number GPU-4120-E-CUP-28. The 28V option creates outputs for a 120 kVA 400 Hz AC and 28V DC combination aircraft ground power supply.

Engine Specifications:

24 volt starting motor

Heavy-duty spark arrestor/silencer

Pusher type fan

Full-flow lubricating oil filter

Dry-type air cleaner

(2) 12-volt batteries

Full flow fuel filter

De-aerator tank

Low coolant shutdown

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

Generator Controls:

Digital generator control module (GCM) features voltage regulation, generator fault protection, and a generator operating parameter display. The GCM monitors the 400 Hz output when 400 Hz is in use and automatically switches over to monitor 28.5 VDC output when optional 28.5 VDC transformer rectifier is in use. The voltage regulator provides line drop compensation on 400 Hz as well as line drop compensation and current limiting on optional 28.5 VDC transformer rectifier. The GCM displays the generator output operating parameters such as voltage, current, and frequency digitally on a backlit LCD. The GCM 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

Please note we provide leasing cheaper than CONFIDEX.

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