Details
The GPU-409 Ground Power Unit features a compact design with full-size performance which allows for easier handling and better mobility near aircraft. It features a brushless, high efficiency generator running at an optimized 1846 RPM providing improved fuel efficiency and reduced sound level while ensuring rapid transient response and exceptional frequency regulation.
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
- Pusher-type fan
- 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
- Direct engine connection
Electrical Characteristics:
- Meets MIL-STD-704F
- Voltage regulation: +/- 1% over full load range
- 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: <1% at balanced 3 phase load. <4% at 1/3 load on 1 phase and no-load on 2 phases
- Harmonic content: THD <2%. Any 1 phase harmonic <1.5% at 0.8 PF 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: Increases up to 10 VAC
- L-N to compensate for aircraft cable voltage drop
Chassis Characteristics:
- Easy access to all components
- Side mounted cable trays with integral rollers
- Fuel tank 46 gallons for over 8 hrs of run time
- 5th wheel steering with no-drop towbar brake
- Forklift pockets and tie down rings
- Cable plug holders
