What voltage and frequency do aircraft ground power units supply?

Ground power unit output depends on the aircraft being serviced. Many general aviation aircraft run on 28 volts DC, while larger commercial and military aircraft typically require 115 volt, 400 Hz alternating current. Tronair configures GPUs to match the specific voltage and frequency needs of the fleet they will support.

Can a GPU be paired with a tug for full airport ramp coverage?

Yes. Ground power units and tugs are often used together during airport ramp operations, with the tug handling aircraft positioning and the GPU supplying power once the aircraft is in place. Tronair supplies both GPUs and tugs, including through our Eagle Tugs brand, so ramp crews can source a complete ground handling package from one supplier.

What type of maintenance do Tronair ground power units require?

Routine care involves inspecting cables, cleaning filters, checking voltage output, and monitoring fuel or coolant levels for engine-driven units. Tronair provides detailed manuals and support resources to simplify maintenance scheduling.

Are Tronair GPUs compatible with different aircraft types?

Yes. Tronair ground power units are designed for broad compatibility across business jets, regional aircraft, and larger commercial models. Various voltage and connector options make it easy to integrate each unit with multiple aircraft types.

What is the difference between a GPU and an APU?

A ground power unit is external ground support equipment that supplies power while an aircraft is parked, while an auxiliary power unit (APU) is built into the aircraft itself and burns its own fuel to generate power. Operators often prefer using a GPU over the APU on the ground since it reduces engine hours, fuel burn, and noise on the ramp.

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Aircraft Ground Power Units (GPU)

Power up your aircraft with an aircraft Ground Power Unit (ATA 24) from Tronair. Each compact and maneuverable GPU airplane system provides a steady 28.5 V DC supply for maintenance, servicing, and preflight checks. Tronair aircraft ground power units keep systems running safely while aircraft are parked on the runway or in the hangar. Explore the complete selection of aircraft ground power units and find the right model for your operation.

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Electrical Connector Kits

Diesel GPUs

Gas GPU, 28.5 VDC

Solid State Rectifiers, 28.5 VDC

Reliable Ground Power for Every Aircraft on the Ramp

Tronair GPUs are engineered to supply consistent electrical power to aircraft on the ground. Each aircraft ground power unit for sale maintains accurate voltage and current control to protect sensitive onboard electronics during maintenance, loading, or preflight inspection. With rugged housings, weather-resistant frames, and internal safety systems, every Tronair GPU airplane system stands up to demanding ramp conditions while maintaining smooth, reliable power output.

Key features include:

Diesel, gas, or solid-state configurations for varied environments
28.5 V DC output standard across all models
Optional 400 Hz AC output available on select diesel versions
Tier 4 Final engine options for reduced emissions and fuel efficiency
Heavy-duty construction for outdoor and hangar use
Built-in overload and over-temperature protection

Choosing the Right Tronair GPU

Selecting a GPU depends on operational demands, aircraft size, and infrastructure. Tronair offers multiple configurations and accessories to match the power, performance, and portability your operation requires.

Solid State Rectifiers

Solid state rectifier GPUs convert incoming AC power to the DC or AC output an aircraft requires, offering clean, stable power with minimal maintenance compared to rotary units. These units are a common choice for gate and hangar installations where a fixed power source is available.

Diesel Powered GPUs

Diesel ground power units generate their own power on site, making them the right choice for ramps without ready access to facility power. Tronair diesel GPUs are built for continuous duty cycles and are sized to match the demands of everything from light jets to wide body commercial aircraft.

Gasoline Powered GPUs

Gasoline powered GPUs offer a lighter, more compact alternative for smaller aircraft and general aviation operations where lower power output and easier mobility around the ramp are priorities.

Voltage and Frequency Configurations

Because no two fleets have identical power needs, Tronair configures each GPU for aircraft ranging from light business jets to wide body commercial airliners, delivering 28V DC, 115V 400Hz AC, or dual voltage output. Our sales engineers can help match GPU output to your specific fleet mix before you buy.

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Frequently Asked Questions About Aircraft GPU For Sale

What voltage and frequency do aircraft ground power units supply?

Ground power unit output depends on the aircraft being serviced. Many general aviation aircraft run on 28 volts DC, while larger commercial and military aircraft typically require 115 volt, 400 Hz alternating current. Tronair configures GPUs to match the specific voltage and frequency needs of the fleet they will support.
Can a GPU be paired with a tug for full airport ramp coverage?

Yes. Ground power units and tugs are often used together during airport ramp operations, with the tug handling aircraft positioning and the GPU supplying power once the aircraft is in place. Tronair supplies both GPUs and tugs, including through our Eagle Tugs brand, so ramp crews can source a complete ground handling package from one supplier.
What type of maintenance do Tronair ground power units require?

Routine care involves inspecting cables, cleaning filters, checking voltage output, and monitoring fuel or coolant levels for engine-driven units. Tronair provides detailed manuals and support resources to simplify maintenance scheduling.
Are Tronair GPUs compatible with different aircraft types?

Yes. Tronair ground power units are designed for broad compatibility across business jets, regional aircraft, and larger commercial models. Various voltage and connector options make it easy to integrate each unit with multiple aircraft types.
What is the difference between a GPU and an APU?

A ground power unit is external ground support equipment that supplies power while an aircraft is parked, while an auxiliary power unit (APU) is built into the aircraft itself and burns its own fuel to generate power. Operators often prefer using a GPU over the APU on the ground since it reduces engine hours, fuel burn, and noise on the ramp.

Request a Quote for an Aircraft GPU Today

Find the right aircraft ground power unit for sale at Tronair and keep your fleet powered. Every GPU airplane model is engineered for reliability, safety, and operational efficiency in real-world aviation environments. Browse the full range of units, explore technical details, and request a quote today to equip your ramp or hangar with proven Tronair ground power solutions.

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