Ramp Service Power Equipment
2.Technology: Static solid-state DC rectifier with advanced power conversion technology
3.Input: 380V three-phase, 50/60Hz ±15% AC input
4.Key feature: Compact trolley-mounted design with low ripple DC output and high voltage stability for mobile aircraft maintenance operations
5.Applications: Southeast Asia airports, Middle East aviation bases, aircraft hangars, helicopter maintenance stations and remote service locations
6.Compliance: Designed according to aviation power standards including MIL-STD-704F, GJB572A-2006 and ISO6858
7.Applications: Aircraft battery charging, avionics testing, aircraft maintenance and aerospace equipment ground power supply
8.Brand: ACSOON (OEM and customized solutions supported)
9.Features: Digital display with voltage/current monitoring, fault alarm and multiple historical event records memory
- Product Description
GPU28200 6kVA 28V DC Aircraft Ground Power Unit
Portable DC Power Solution for Aircraft Maintenance, MRO and Ground Support
Aircraft maintenance teams often need a stable external DC power source for battery charging, electrical testing and aircraft inspection.
The ACSOON GPU28200 28V DC Aircraft Ground Power Unit provides reliable 28.5V DC power output for aircraft ground operations, helping maintenance engineers reduce battery dependency and improve service efficiency.
With a compact trolley-mounted design, GPU28200 is easy to move between hangars, ramps and service areas, making it suitable for regional airports, MRO centers, helicopter operators and aviation service companies.

Solve Common Aircraft Maintenance Power Problems
During aircraft ground maintenance, unstable or insufficient DC power may cause:
- Limited electrical system testing
- Longer maintenance time
- Excessive battery usage
- Reduced aircraft turnaround efficiency
GPU28200 provides a dedicated external DC power solution for:
✓ Aircraft battery charging
✓ Avionics testing
✓ Electrical system maintenance
✓ Ground service operations
Designed for Airports, MRO and Aviation Service
GPU28200 is suitable for different aviation environments:
Airport Ground Support
Provides portable 28V DC power for:
- Aircraft parking stands
- Maintenance areas
- Ground service operations
MRO Maintenance Facilities
Supports:
- Daily aircraft inspection
- Repair operations
- Aircraft electrical testing
Helicopter and Special Aviation
Ideal for:
- Helicopter maintenance stations
- Remote aviation locations
- Training aircraft service
GPU28200 Technical Specifications
| Parameter | Specification |
|---|---|
| Model | GPU28200 |
| Output Voltage | 28.5V DC |
| Rated Power | 6kVA |
| Design | Portable trolley type |
| Input | 380V Three Phase AC |
| Frequency | 50Hz/60Hz |
| Technology | Solid-state DC rectifier |
| Display | Digital monitoring display |
| Protection | Over voltage, over current, overload, overheating |
| Application | Aircraft maintenance and ground support |
GPU28200 vs Traditional Battery Power Solution
| GPU28200 Aircraft Ground Power Unit | Aircraft Battery | |
|---|---|---|
| Continuous operation | Yes | Limited by battery capacity |
| Voltage stability | High | Changes with battery condition |
| Maintenance efficiency | Improves testing speed | May require charging time |
| Daily operation cost | Lower long-term cost | Higher replacement frequency |
| Mobility | Trolley-mounted | Not designed for external support |
For regular aircraft maintenance, an external 28V DC ground power unit provides a more reliable and efficient solution.

Frequently Asked Questions
What is a 28V DC Aircraft Ground Power Unit?
A 28V DC Aircraft Ground Power Unit provides external DC power for aircraft maintenance, battery charging and electrical testing without relying on onboard batteries.
Is GPU28200 suitable for helicopters?
Yes. The compact trolley-mounted structure makes GPU28200 suitable for helicopter maintenance and small aircraft ground operations.
Can GPU28200 be customized?
Yes. ACSOON supports OEM customization including output specifications, connectors, mechanical structure and communication options.
What is the difference between 28V DC GPU and 400Hz GPU?
A 28V DC GPU supplies direct current power mainly for aircraft battery systems and DC equipment, while a 400Hz GPU provides AC aircraft power for larger aircraft electrical systems.
If you need it,Contact us at Email: acpower@acsoonpower.com

Why Choose GPU28200?
Portable Trolley Design
Unlike fixed DC power systems, GPU28200 can be easily moved between different aircraft positions.
Benefits:
- Faster deployment
- Less installation requirement
- Suitable for limited maintenance space
Stable 28.5V DC Output
Designed for aircraft DC power applications with:
- Low ripple output
- Stable voltage performance
- Reliable continuous operation
Intelligent Protection System
Built-in protection includes:
- Over voltage protection
- Over current protection
- Short circuit protection
- Over temperature protection
The digital display helps operators monitor working status and identify faults quickly.
Why Choose ACSOON 28V DC Aircraft Ground Power Solution?
ACSOON specializes in aviation power solutions including:
- 28V DC Aircraft Ground Power Unit
- 400Hz Aircraft Ground Power Supply
- Static Frequency Converter
- Customized aviation power systems
With professional engineering capability and OEM support, ACSOON provides reliable power solutions for airports, MRO organizations and aviation operators worldwide.


Built for Southeast Asia and Middle East Aviation Markets
Southeast Asia Applications
Suitable for:
- Regional airports
- Aviation training centers
- Helicopter operators
- Aircraft maintenance companies
Advantages:
- Compact structure for limited spaces
- Easy movement between aircraft
- Reliable daily maintenance support
Middle East Applications
Suitable for:
- Airport maintenance facilities
- Business aviation
- Government aviation support
- Remote aircraft service locations
Advantages:
- Stable operation in demanding environments
- Simple maintenance
- Flexible deployment
Quality Control
Cold chamber test – Every unit runs at -30°C for 2 hours. Heater must hold internal temp above 0°C.
Hot chamber test – 55°C for 4 hours at full load. No over‑temp alarms.
IP56 water test – High‑pressure spray from all directions for 10 minutes. No water inside.
Sand test – Blown sand against the intake for 30 minutes. Filter catches it.


R&D Results
Heater placement – First unit had heater near the top. Heat rose, bottom stayed cold. Moved to the bottom. Much better.
Filter design – Original filter clogged fast in heavy dust. Switched to a cyclonic pre‑filter. Lasts 10x longer.
Door seals – Used automotive‑grade bulb seals. Stays flexible down to -40°C. No cracking.
Customer feedback – An Arctic operator wanted a way to check internal temp without opening the door. Added a display on the outside.
Packaging and Transportation
Shipped from Xi'an – On a heavy skid, bolted down, covered with a breathable waterproof cover.
No crate needed for domestic – The unit itself is the crate. For export, add a wooden crate.
Documentation – Laminated cold weather quick start, full manual on USB.
Extra filter – One spare filter included.


After‑Sales Service
1‑year warranty – Covers electronics, heater, fans. Filters are consumable.
Spare parts (heater element, fans, control board) kept in Xi'an.
Email support – We answer within one business day. Include temperature readings.
Qualification Certification
CE – LVD and EMC.
MIL‑STD‑810 – Environmental test report available.
ISO 9001:2015 – Our Xi'an facility.

FAQ
Q1: Do I need a separate power source for the heater?
A: No. The heater runs off the input power when the unit is plugged in. No extra connection.
Q2: Can I use this in a cold climate without the heater?
A: Not recommended. Electrolytic capacitors lose capacitance below -10°C. The heater keeps them warm. Without it, the unit may fail to start.
Q3: Is the filter washable?
A: The primary foam filter is washable. The secondary paper filter is not – replace it. We include one spare.
Q4: What's the difference between IP56 and IP54?
A: IP54 is dust‑protected and splashing water. IP56 is dust‑tight and high‑pressure water jets (hose down). This unit can be pressure‑washed from a distance.
Q5: Lead time from Xi'an?
A: 5‑6 weeks. The heater and sealed enclosure are built to order.
Looking for a portable 28V DC Aircraft Ground Power Unit for aircraft maintenance?
GPU28200 provides a practical solution for airports, MRO centers and aviation service companies requiring reliable external DC power.














