28V DC Mobile GPU

1.Output: 28.5VDC, 400A continuous (500A peak for start)
2.Technology: IGBT‑based high‑frequency rectifier, sealed against ramp dust
3.Input: 3‑phase 400V/480V, 50/60Hz (or single‑phase 230V optional)
4.Battery backup: Optional internal lead‑acid pack for 15 minutes of no‑grid operation
5.Applications: Regional jets, turboprops, helicopters, military ground support
6.Features: Towbar handle, pneumatic tires, fork pockets, IP54 rated
7.Brand: ACSOON (built for ramp life, not lab life).

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Product Description

28V DC Mobile GPU | Portable Ground Power Trolley for 28V Aircraft

Let's be honest – most 28V DC power supplies are designed for a clean bench, not for a wet ramp at 2 AM. Our 28V DC Mobile GPU is different. It started as a request from a regional airline that kept breaking their lab‑grade rectifiers after six months of towing them across tarmac. So we built this one from the ground up for actual ground handling.

It's a wheeled trolley with a proper 400A DC rectifier inside. You tow it behind a golf cart, plug it into any 400V outlet or generator, and connect to the aircraft. That's it.

Datasheet

Parameter	Specification
Model Series	ACSOON ADCW Series
Model Number	ADCW‑28400 (400A mobile)
Input	3‑phase 400V/480V ±15%, 50/60Hz (single‑phase 230V optional)
Output	28.5VDC nominal, adjustable 20‑32V 400A continuous, 500A for 30 seconds
Ripple	≤ 0.2V RMS
Regulation	≤ ±1% FS line & load
Efficiency	≥92% at full load
Cooling	Sealed, IP54‑rated fans (no air intake from outside)
Cable	20m (optional 30m) 2/0 AWG, NATO plug (MS90355)
Weight	180kg (unit) + 30kg (cable reel)
Dimensions	1100L x 700W x 950H mm (trolley)
Tires	200mm pneumatic, swivel front with brake

If you need it,Contact us at Email: acpower@acsoonpower.com

28V DC Mobile GPU Main Features

Constant voltage + current limiting – set the voltage (20‑32V) and a current limit; unit switches to CC mode automatically.
Low ripple – under 0.2V RMS, safe for sensitive mission computers.
Cable reel – optional manual crank reel with 20m of 2/0 AWG cable, NATO plug included.
Environmental sealing – IP54 rated. We’ve pressure‑washed the inside (by accident) and it still worked.

Why Choose ACSOON 28V DC Mobile GPU?

Built for towing – steel chassis, pneumatic tires, and a low center of gravity. Won't tip over when you hit a bump.
Real 400A continuous – not just a peak rating. We tested it for 8 hours at 400A in a 40°C room. It held.
Works with any input – 380‑480V, 50 or 60Hz, three‑phase. Also available in single‑phase 230V for smaller hangars.
Simple controls – one rotary switch for output, one button for start. No touchscreen to crack or freeze.

28V DC Mobile GPU Application Areas

Regional jet maintenance – CRJ, Embraer 145, ATR – they all need 28V for avionics and battery charging.
Helicopter operators – Bell, Airbus helicopters, Sikorsky – many use 28V DC ground power for engine starts.
Military line units – F‑16, C‑130, Black Hawk – the 28V military standard is exactly what this delivers.
Bizjet FBOs – Gulfstream, Bombardier Global – quick plug‑in for pre‑flight without running the APU.

Our Services

Quality Control

Every unit ramp‑tested – we connect it to a real 28V load bank and run it for 2 hours. No shortcuts.
Water spray test – IP54 verified with a hose. We spray the front panel, sides, and bottom vents.
Cable pull test – each output cable is tugged with 50kg force to check strain relief.
Calibration sticker – attached to the inside of the front door with date and tester name.

R&D Results

Learned from field failures – early versions had fan intake on the bottom. Ramp debris killed them. Now all fans are side‑mounted with filters.
Added a manual bypass – if the electronics fail, you can still get raw rectified DC to the aircraft (no regulation, but enough for lights and fans).
Reinforced the tow bar – after one customer bent the original design backing into a pushback tug. New bar is 10mm steel plate.
Simplified the display – replaced an LCD that was unreadable in sunlight with big 7‑segment LEDs.

Packaging and Transportation

Shipped on a mini pallet – the trolley is strapped down, wheels chocked, cable reel in a separate box.
Export crating – plywood crate available for sea freight (adds 40kg).
Documentation – one laminated quick guide (waterproof), one printed manual, one USB stick with full schematics.
Spare parts kit – optional: includes an extra fan, a set of brushes for the main contactor, and a current sensor.

After‑Sales Service

2‑year warranty on the rectifier module.
1‑year warranty on the cable and plug (they get abused).
Phone support: we have a tech who used to work on 737s. He speaks English and Chinese.
Loaner unit available if yours needs factory repair (shipping cost only).

Qualification Certification

CE – LVD and EMC tested；ISO 9001:2015 – our Xi'an facility；MIL‑STD‑704 – output characteristics meet military standard (test report available)；IP54 – certified by an external lab.

FAQ
Q1: Can I use this to start a jet engine?
A1: Yes, for APU starts and some small jet engines. But a 400A 28V supply is usually enough for avionics and battery charging. For main engine start on larger jets (e.g., 737, A320), you need a 28V 1000A+ unit – we make those too (ADCW‑281000).
Q2: Does it come with the NATO plug?
A2: Standard is an Anderson SB175. NATO plug (MS90355) is optional – add about $180. Cable is terminated to your choice of plug.
Q3: Can I run it from a single‑phase 230V outlet?
A3: Yes, but you'll only get 200A continuous. The unit automatically detects input phase loss and limits current. Fine for smaller aircraft (Cessna, Piper, Robinson helicopters).
Q4: How often do I need to replace the battery in the optional internal pack?
A4: That battery is for "no‑grid" operation – it's a 48V lead‑acid pack that the unit uses to generate 28V when no AC input is present. Replace every 3‑5 years. It's in a slide‑out tray.
Q5: What’s the typical lifespan of this unit on a busy ramp?
A5: We have units from 2018 still in daily use at a cargo hub in Anchorage. The weakest part is the cable reel – replace the slip rings every 2‑3 years. Everything else lasts.

Contact Us

For technical specifications or global solutions for the 28V DC Mobile GPU: acpower@acsoonpower.com, or submit your requirements using the form at the bottom of our website.