Aircraft ground support equipment
Aircraft ground power units
400 Hz AC and 28 V DC ground power units for starting and maintaining military aircraft and helicopters.
Overview
What it does
Engine-driven ground power units for aircraft starting and maintenance, with a high-speed engine directly coupled to a 400 Hz brushless alternator and specially designed transformer-rectifiers for continuous and cranking DC loads.
Models cover 20 kVA to 90 kVA AC with 28 V, 56 V and 0–70 V DC outputs, transient performance to MIL-STD-704D, and tractor-towable, electric-vehicle-driven or self-driven versions.
More than 250 units have been supplied.
Applications
- Starting and ground maintenance of fighter and transport aircraft
- Ground power for military helicopters
- APU start (28 V DC)
- Supplying two aircraft simultaneously on AC paths
Certifications and standards
- Output power quality to MIL-STD-704D
Features
Why engineers choose it
- High-speed engine directly coupled to a 400 Hz brushless alternator
- Transformer-rectifiers designed for both continuous and cranking loads
- Electronic AVR holds regulation and meets peak starting loads
- Microcontroller protects aircraft and GPU against output faults and records data for post-analysis
- Two sets of output cables (AC and DC where applicable) with connectors
- Designed for wide temperature variation and operation up to 2,500 m above MSL
- Optional 50 Hz alternator with static frequency converter
Specifications
Key specifications
Configured to order. Full details are in the datasheet.
| AC output | 400 Hz, 3-phase; models of 20, 40, 60 and 90 kVA; larger units to order |
|---|---|
| DC output | 28 V DC (10 kW, 1,250–1,500 A for 10 s per path); 28 V / 56 V DC; 0–70 V DC main start output, 1,600 A peak |
| Higher DC rating | Up to 100 kW DC can be designed and supplied |
| Power source | Air-cooled or water-cooled engine-alternator; optional 50 Hz alternator with SFC |
| Voltage regulation | Electronic AVR on alternator field |
| Transient standard | MIL-STD-704D |
| Ambient | -20 °C to 55 °C |
| Altitude | Up to 2,500 m AMSL (1,500 m for SPC-02B) |
| Connectors and cables | 6-pin NATO (AC), 3-pin NATO or SHARA (DC); 10 m or 15 m cables |
| Mobility | Tractor-towable, electric-vehicle-driven or self-driven; outdoor |
| Monitoring | Microcontroller-based monitoring and protection with recording of measurements |
Typical values. Ratings and options may vary by model; confirm with the latest datasheet.
Downloads
Documents
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