Unitron UFC-20M – 20 kVA AC Ground Power Unit (GPU)
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The Unitron UFC-20M PwrKart is a 20 kVA 400 Hz AC ground power unit for powering corporate aircraft in the hangar or ramp environment. This unit operates on 3-phase input voltage from the hangar or your local facility.
NOTE: Please advise your hangar's voltage at the time of requesting a quote to quote the correct model.
Specifications
- IP55
- Certified to UL 1012
- 3-phase, 380V to 480V AC input (other 3-phase input voltages available upon request, including 208V, 220V, and 240V)
- Indoor/outdoor use (hangar/ramp)
- <= 5% input current distortion
- Automatic input line monitoring
- Advanced Integrated Display (AID) console
- 8000 event log/diagnostics
- TCP/IP/Ethernet interface (Modbus)
- Internal communication ports – USB, RJ45 (Ethernet), RS485 (Modbus), & RS232
- External communication ports – RJ45 (Ethernet) & USB
- 15% automatic line-drop compensation
- Emergency power "OFF" switch
- 18" hazard area clearance
- I/O voltage, current, and frequency monitoring
- Elapsed time meter
- Sleep mode
- Front panel summary fault indicators
- Input and output cable racks
- Input high-voltage transient protection
- Multi-language (Romanization) display – English, French, German, Italian, Portuguese, Russian, and Spanish – Other languages may also be available – request at the time of quote
Input
- Input Current Distortion: <= 5%, typically 3%
- Input Voltage: 380V to 480V, +10%, -15%, 3 or 4 wire plus ground (alternate voltages – request at the time of quote)
- Frequency: 50 to 60 Hz +/-10%
- Phase Rotation: Any
- Protection: Overvoltage/undervoltage, loss of phase, overcurrent, short circuit. Voltage transient protection IAW IEEE C62.41.1, Location Cat. B/C
- Inrush Current: No greater than 100% of full load current
Environmental
- Acoustical Noise: < 65 dBA maximum at 5 feet (1.5 meters)
- Temperature Range: -40°F to 131°F (-40°C to 55°C)
- Relative Humidity: 10% to 95%
- Ingress of Water: Type 3RX, IP55
Energy Factors
- Efficiency: 93% typical at full load, 90% typical at half load; varies depending on configuration
- Energy Efficiency Ratio: 20.0 typical
Output
- Overload: 100% continuous, 110% for 60 minutes, 125% for 10 minutes, 150% for 2 minutes, 450% for 20 seconds (20 kVA)
- Voltage: 115V/200V, 3-phase, 4 wire, grounded neutral
- Crest Factor: 1.414 +/-3%
- Voltage Regulation: +/-1.0% under all conditions of line, balanced loads, and temperature
- Voltage Transients: IAW MIL-STD-704F
- Frequency Regulation: 400 Hz +/- 0.01% under all conditions of line, load, and temperature
- Frequency Transients: None
- Phase Angle Regulation: +/-1 degree for balanced loads; +/-2 degree for unbalanced loads
- Harmonic Distortion: 2.0% maximum
- Protection: Overload, short circuit, overvoltage/undervoltage, and safety disconnect
- Automatic Line-Drop Compensation (ALDC): 15%
Cabinet Info
- Weight: 453 lbs (205 kg)
- Length: 40" (101.5 cm)
- Width: 33" (83.8 cm)
- Height: 45" (113.8 cm)
- Enclosure: NEMA 3RX corrosion-resistant
- Cooling: Forced convection
Standards
- EN 61000-6-2*: Electromagnetic compatibility, Immunity standard for industrial environments
- EN 61000-6-4*: Electromagnetic compatibility, Emission standard for industrial environments
- 2006/95/EC*: Low Voltage Directive
- ISO 1540: Characteristics of aircraft electrical system
- ISO 6858: Aircraft ground support electrical supplies
- SAE ARP 5015: Ground equipment 400Hz ground power performance requirement
- MIL-STD-704F: Aircraft electric power characteristics
- MIL-STD-1472: Human Engineering Design Criteria
- DFS-400: Specification for 400Hz aircraft power supply
*Defined Basis of CE Mark Certification
Available Options
**If any options below are required, please request at time of quote.
- Alternate input voltage range: 3-phase, 208V to 240V or 600V AC input
- 50-foot or 100-foot input power cable (pigtail – specify required length)
- AC output power cable with plug (available in 30-foot or 60-foot standard lengths) – specify required length
- Output universal aircraft safety interlock circuit disconnect (single or dual)
- Output safety disconnect
- Front panel AC voltage adjust (+/- 15%)
- 28V DC or 270V DC output
- Up to 675% overload for 6 seconds, dependent on rating
- No Break Power Transfer (NBPT) compatible
- Indoor touchscreen panel
- Alternate mounting configurations available
- Pneumatic ramp tires
- Custom paint and decals (standard color is white)
- CSA certified
- CE marked
- Ground fault monitor
- Lockable front door
- Neutral interrupt protection
- Universal safety interlock
| General Information | |
|---|---|
| Part # | UFC-20M |
| Manufacturer | Unitron |
| Warranty | |
|---|---|
| Details | 3 Year Limited Warranty - View Details |
| Shipping Information | |
|---|---|
| ECCN | EAR99 |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Gulfstream | G300 , G350 , III |
PRODUCT REVIEWS
QUESTIONS & ANSWERS
The Unitron UFC-20M 20 kVA AC Ground Power Unit is designed to deliver 400 Hz, 115V/200V AC power for aircraft servicing and maintenance operations. It supplies clean, regulated power to aircraft systems while parked, ensuring reliable electrical performance during ground testing, preflight checks, or maintenance procedures. Its solid-state design provides high efficiency and minimal downtime.
The UFC-20M GPU supports both commercial and military aircraft that require 400 Hz AC ground power. This includes fixed-wing aircraft, business jets, and helicopters that use 115/200 VAC, three-phase power. Because of its modular design and mobile configuration, it’s suitable for use on ramps, in hangars, or in remote maintenance locations.
Yes. The Unitron UFC-20M is a mobile GPU, built on a compact, wheeled chassis with integrated handles and ramp tires for easy maneuverability. This design enables technicians to position it close to the aircraft without requiring additional towing equipment, thereby reducing setup time and improving ground efficiency.
The UFC-20M uses a forced convection cooling system, which circulates air through the internal components to maintain optimal operating temperatures. This ensures efficient performance even in high-temperature ramp environments and extends the lifespan of internal electronics.
The UFC-20M provides a continuous output of 20 kVA at 115V/200V AC, 400 Hz, with a power factor range from 0.5 lagging to 0.8 leading. It offers voltage regulation within ±1% and frequency regulation of 400 Hz with an accuracy of ±0.01%, ensuring stable and consistent aircraft power under varying load conditions.
The UFC-20M GPU is designed for both indoor and outdoor use, rated for operation in temperatures ranging from -40°F to 131°F (-40°C to 55°C) and up to 95% non-condensing humidity. It features an IP55/NEMA Type 3SX enclosure rating, providing robust protection against dust, moisture, and corrosion for long-term reliability on the ramp.
The UFC-20M achieves a typical efficiency of 93% at full load, with minimal harmonic distortion (less than 2%), ensuring a clean and stable power delivery. Its high energy efficiency ratio (EER) of 20.0 reflects low energy loss during conversion, which reduces overall operating costs and extends the life of its components.
Yes. The UFC-20M complies with multiple international and military standards, including UL 1012, NFPA 70 (NEC 500), MIL-STD-704F, and CE Mark certification. It is also manufactured under an ISO 9001:2015-certified quality management system, ensuring traceability and adherence to global aerospace standards.
The GPU includes comprehensive protection systems for overload, short circuit, overvoltage/undervoltage, and phase loss. It also features line-drop compensation, a ground fault monitor, and an emergency power-off switch. Its integrated diagnostics and touchscreen Advanced Integrated Display (AID™) console provide real-time system monitoring and fault logging for up to 8,000 events.
Yes. Optional features include alternate input voltages (208V to 240V or 600V AC), extended input/output cable lengths, universal aircraft interlock circuits, and custom paint or decals. Other available upgrades include No-Break Power Transfer compatibility, pneumatic ramp tires, and external Ethernet communication ports for remote monitoring.
The GPU produces less than 65 dBA at a distance of 5 feet (1.5 meters), which is quieter than many comparable models. This low noise level enhances communication and safety in busy ramp environments, particularly during preflight servicing.
Routine maintenance includes inspecting cables, verifying connector integrity, and keeping air intakes clear for proper cooling. Its solid-state design and self-diagnostic system minimize mechanical wear, reducing the need for frequent service. Periodic software and firmware checks via the Ethernet or USB interface help maintain optimal performance.
