400HZ / 270VDC Combination Aircraft Ground Power Unit

One Unitron GPU can support multiple aircraft types if the aircraft share compatible electrical requirements, connector types, output ratings, and operating procedures. Mixed fleets often prefer multiple output types, which is why 400 Hz/28 VDC and 400 Hz/270 VDC combination GPUs can be useful.

A combination AC/DC GPU can reduce the number of separate power units needed in the hangar or on the ramp. Combining outputs into one unit can save floor space, simplify cable management, reduce equipment congestion, and support aircraft that require more than one type of external power.

A 400 Hz/270 VDC combination GPU provides both 400 Hz AC aircraft power and 270 VDC aircraft power from one solid-state unit. This configuration is useful for military, advanced aircraft, UAV, and MRO applications where both traditional 400 Hz AC and high-voltage DC aircraft power may be required for maintenance or testing.

To choose the correct aircraft GPU, confirm the aircraft’s required output type, output load requirement, connector, frequency, input and output cable lengths as applicable, input power, installation location, and environmental conditions. The most important starting point is whether the aircraft requires 400 Hz AC, 28 VDC, 270 VDC, or a combination output.

Choose a 270 VDC aircraft power supply when the aircraft or test system requires a 270 volt direct current electrical architecture. 270 VDC ground power is used for advanced military aircraft, more-electric aircraft systems, UAV programs, special-mission aircraft, and MRO environments that must power or test high-voltage DC aircraft systems safely on the ground.

Choose a 400 Hz GPU when the aircraft requires 115/200 VAC, 400 Hz external power for avionics, lighting, cabin systems, maintenance, preflight checks, or other powered ground operations. 400 Hz GPUs are common for commercial aircraft, business jets, military aircraft, special-mission aircraft, and aircraft maintenance hangars.