90kVA 400Hz Aircraft GPU
2.Technology: Solid‑state IGBT converter with sealed IP56 enclosure
3.Input: 380‑480V three‑phase, 50/60Hz ±15%
4.Key feature: Built‑in heater and filter system for -30°C to +55°C operation
5.Applications: Arctic airfields, desert bases, offshore helidecks, exposed mountain ramps
6.Compliance: MIL‑STD‑704F, MIL‑STD‑810 (environmental)
7.Applications: aviation R&D and military equipment
8.Brand: ACSOON (support OEM)
9.Features: multiple history events memorized in record.
- Product Description
✈️ 90kVA 400Hz Aircraft GPU / STATIC FREQUENCY CONVERTER
400Hz Aircraft Ground Power Unit – GPU400 Series
Product Overview
The 90kVA 400Hz Aircraft GPU is designed as a ground power solution for aircraft maintenance and airport operations where stable 400Hz power is required.
In typical aviation environments, aircraft cannot rely on standard utility power. The system converts three-phase 50Hz/60Hz mains supply into a stable 115V / 120V 400Hz aircraft-grade output, supporting both ground testing and onboard system operation.
It is commonly used at hangars, aprons, maintenance pits, and aircraft manufacturing facilities where continuous and stable external power is required.
Unlike general industrial converters, this system is designed around aviation duty cycles, load behavior during engine start, and long-hour ground operation conditions.
Key Features of GPU400 Series Static Frequency Converter
1.Stable 400Hz Aircraft Power Output
The system delivers clean sine wave 400Hz output specifically designed for aircraft electrical systems, ensuring stable operation during maintenance and testing.
2.Designed for Aviation Ground Operation
Built for airport environments including hangars, apron areas, and maintenance stations where equipment runs for long periods under varying load conditions.
3.High Efficiency Power Conversion
The converter uses SPWM modulation with high conversion efficiency and low harmonic distortion, reducing unnecessary energy loss during continuous operation.
4.Advanced Protection Logic
The system reacts to abnormal conditions such as overload, overheating, short circuit, and overcurrent to protect both the unit and connected aircraft systems.
5.Automatic Voltage Compensation
Output voltage is adjusted automatically to maintain stable aircraft connector voltage during load changes.
6.Built for Harsh Environment Use
With IP54 protection level, the system is suitable for outdoor airport conditions, including dust and moisture exposure.
90kVA 400Hz Aircraft GPU Application Scenarios
The 90kVA 400Hz Aircraft GPU is widely used in aviation and aerospace support systems:
Aircraft maintenance hangars
Airport apron ground support
Aircraft engine start assistance
Aircraft factory final assembly testing
Military aviation ground systems
Aircraft electrical system validation
Airport fixed pit power systems
Aerospace R&D testing platforms
Technical Specifications
Input Parameters
| Item | Specification |
|---|---|
| Input Phase | 3 Phase |
| Input Voltage | 208V / 380V / 400V / 415V / 440V / 480V |
| Frequency | 50Hz / 60Hz |
| Voltage Tolerance | ±15% |
| Power Factor | ≥0.9 |
Output Parameters
| Item | Specification |
|---|---|
| Output Type | 3 Phase 4 Wire |
| Output Voltage | 115V / 120V (L-N), 200V / 208V (L-L) |
| Output Frequency | 400Hz |
| Voltage Regulation | ±1% |
| Frequency Stability | ±0.01% |
| Waveform | Pure Sine Wave |
| THD | <2% |
Performance Data
| Item | Specification |
|---|---|
| Efficiency | ≥93% |
| Overload Capacity | 125% (10 min), 150% (60 sec), 200% (30 sec) |
| Protection | Overload / Overheat / Short Circuit / Overcurrent |
| Cooling | Forced Air Cooling |
| Protection Grade | IP54 |
| Noise Level | ≤65 dB (1m) |
| Operating Temp | -20°C ~ 50°C |
| MTBF | 50,000 hours |
If you need it,Contact us at Email: acpower@acsoonpower.com
Product Advantages
System Advantages in Real Operation
- In real airport usage, the 90kVA 400Hz Aircraft GPU is often selected not only for power conversion capability, but for its behavior under continuous aircraft load conditions.
- During aircraft ground testing, power demand can change suddenly when systems such as avionics, hydraulics, or environmental controls are activated. The system is designed to remain stable under these transitions without output fluctuation that could affect test results.
Protection & Safety System
- Over-voltage protection
- Over-current protection
- Over-temperature protection
- Short circuit protection
- Self-diagnostic fault display system
- Event memory logging (10 records)
Build & Reliability Design
- The system is built with industrial-grade components suitable for aviation environments. Internal structure is optimized for thermal stability and long operating cycles.
- Key design considerations include:
- Continuous duty operation capability
- Stable output under unbalanced load conditions
- Reduced maintenance requirements (MTTR < 30 min)
- High reliability design for airport environment
Compliance & Standards
- The GPU400 Series is designed in accordance with international aviation and industrial standards:
- MIL-STD-704F
- ISO 6858
- GJB 572A-2006
- GJB 181A-2003
- EN 61000
About ACSOON
ACSOON is a professional manufacturer of industrial power conversion systems, including static frequency converters, aircraft ground power units, AC power supplies, and customized electrical testing systems.
With over 19 years of engineering experience, ACSOON equipment is widely used in aviation, industrial manufacturing, military support systems, and laboratory testing environments.
Feature
All Weather GPU Main Features
Thermostatic heater – 500W, kicks in at 5°C. Keeps electronics at 10‑20°C internally.
Oversized fans with filter – Moves more air than standard unit. Filter catches sand.
Stainless steel hardware – All external fasteners and latches are stainless. No rust.
Drain valve – In case condensation builds up, open the valve at the bottom.
Why Choose ACSOON All Weather GPU?
Works anywhere – From -30°C to +55°C ambient. No derating, no shutdowns.
Sand and salt proof – IP56 rated. Dust‑tight, protected against powerful water jets.
No extra shelter needed – Just set it on the ramp. It's its own weatherproof box.
Same reliable power – 60kVA, 400Hz, THD under 2%. Same as our standard GPU.
All Weather GPU Application Areas
Arctic airfields – Heated enclosure. No pre‑heating required before use.
Desert military bases – Sandstorm? Close the door. Unit keeps running.
Offshore helidecks – Salt spray resistant. Sealed connectors and stainless hardware.
High mountain airports – Thin air, wide temperature swings. This unit handles both.
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.
Contact Us
For technical specifications or global solutions for the 90kVA 400Hz Aircraft GPU: acpower@acsoonpower.com, or submit your requirements using the form at the bottom of our website.
