The enquiry began with three possible ratings: 200A, 400A and 800A. The aviation service team wanted a mobile 28V DC ground power unit for everyday maintenance, but they also wanted confidence that future work would not immediately exceed the equipment’s capability.
Instead of recommending a rating from the aircraft category alone, the ACSOON team asked the customer to describe each task. Which systems would operate during ground maintenance? Was battery charging part of the routine? Would the GPU support engine starting? What was the peak current, how long would it last, and how many starts might occur in one work period?
The discussion produced a short but useful input sheet: aircraft or load type, continuous demand, peak demand and duration, required output voltage, local AC supply, cable length, connector, installation environment and mobility requirements. This information made it possible to compare the three current classes on the same basis.
A 200A configuration remained relevant for defined maintenance loads. A 400A configuration offered additional headroom where more DC systems could be energized together. An 800A configuration was reserved for a verified high-current profile; it was not treated as the default choice simply because it carried the largest number.
At 28VDC, cable performance deserves the same attention as converter performance. The engineering team reviewed cable length, conductor size, connector type and expected current together. The goal was to maintain the required voltage where the aircraft receives power—not only at the GPU terminals.
This also influenced usability. A heavier cable can reduce voltage drop, but the crew must still be able to deploy, connect and store it safely. The final arrangement therefore had to balance electrical performance with daily ground-handling practice.
The proposed ACSOON ADCW configuration was documented before production. The review covered AC input compatibility, DC output and adjustment range, continuous and overload duty, ripple and regulation targets, protection functions, cabinet type, mobility, cooling, cable and connector, labeling and documentation.
Before shipment, the acceptance scope can include functional checks at representative loads, verification of alarms and protection, cable polarity and connector inspection, visual inspection, documentation review and packing confirmation. When a customer has a specific test procedure, it should be aligned before production so both sides use the same acceptance criteria.
A successful GPU project is not decided by ampere rating alone. The most reliable selection connects the aircraft requirement, duty cycle, input supply and output cable into one configuration. It also leaves a record that maintenance, procurement and supplier teams can all review.
For international buyers in the Middle East, Southeast Asia, Europe, South America and other markets, local mains conditions and operating environment should be included early. Input voltage and frequency, ambient temperature, altitude, indoor or outdoor use and preferred documentation language can affect the final design and delivery scope.
Explore ACSOON 28VDC solid-state GPUs: https://www.acsoonpower.com/product/179.html
Learn more about Xi’an Jerrystar Instrument: https://www.jrd-instrument.com/
QQ客服