GFC-20M - Unitron UFC-20M – 20 kVA AC Ground Power Unit (GPU)

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.