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With decades of proven performance across military bases, international airports, and advanced aerospace facilities, Mecc Alte Italy‘s 400Hz alternators have become synonymous with reliability and engineering excellence. Unlike generic industrial generators, these alternators are purpose-built for the aviation sector, ensuring compatibility with modern aircraft systems and stringent airport infrastructure requirements.
Whether deployed in mobile ground power units servicing aircraft on the apron, or integrated into fixed installations within maintenance hangars, Mecc Alte’s 400Hz units provide consistent, distortion-free power output. Their ability to maintain frequency accuracy within ±0.5% even under variable loads makes them the trusted choice for operators who can’t afford downtime, voltage drops, or waveform instability. In the high-stakes environment of airport ground operations, choosing Mecc Alte means choosing peace of mind.
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Mecc Alte Italy application in the Aviation Industry
Why Do Airports Use 400Hz Power?
In the aviation industry, using 400Hz frequency power is a global standard for both onboard and ground-based electrical systems. Unlike most other industries that operate on 50Hz or 60Hz AC power, aviation specifically requires 400Hz due to factors related to equipment size, weight, and performance.
Aircraft systems—such as avionics, flight control systems, lighting, and climate control—are optimized to run at 400Hz. Higher frequency allows for smaller transformers and motors, reducing the overall aircraft weight, saving fuel, and improving efficiency.
Moreover, airport ground equipment like backup power systems, aircraft maintenance stations, and Ground Power Units (GPU) must also provide 400Hz power to ensure compatibility with onboard systems. Thus, a high-quality power source with stable frequency is essential in any modern airport.
Another key reason is to reduce engine runtime on the ground. When powered by an external 400Hz supply, aircraft can operate onboard systems without using the main engines, thereby reducing emissions, noise, and fuel consumption.
Comparison Between 50/60Hz and 400Hz Power in Aviation
| Criteria | 50/60Hz Power | 400Hz Power (Aviation Standard) |
|---|---|---|
| Frequency | 50Hz (Europe), 60Hz (US, Japan…) | 400Hz – Aviation industry standard |
| Equipment size | Larger due to more coil turns | More compact and lighter |
| Efficiency | Adequate for general applications | Optimized for high-speed, high-performance devices |
| Applications | Industry, office, residential | Aircraft, airport systems, avionics |
| Investment cost | Lower, more common equipment | Higher, specialized systems |
| Frequency stability | Moderate | High – strict voltage & frequency accuracy required |
Where Mecc Alte Italy 400Hz is Used in Airports
Mecc Alte Italy 400Hz generators are widely used not only on aircraft but also throughout key airport operations:
Ground Power Units (GPU) for Parked Aircraft
GPUs are used to supply temporary electrical power to aircraft parked at gates or on the tarmac. When aircraft engines are off to save fuel, GPUs provide electricity for onboard systems like air conditioning, lighting, communication, and battery charging.
GPUs operate at 400Hz to ensure full compatibility with aircraft systems.
Two main types of GPUs are commonly used:
Fixed GPUs: Installed at airport gates with underground cables or swing arms.
Mobile GPUs: Mounted on vehicles or trailers, offering flexibility in power delivery.
Maintenance and Testing Facilities
Aircraft maintenance centers (MRO – Maintenance, Repair and Overhaul) require 400Hz power to inspect, operate, and test aircraft systems without running the engines. Additionally, 400Hz is used for simulators, emergency testing, radar systems, and air traffic control centers.
In such environments—where voltage stability, frequency accuracy, and low interference are critical—Mecc Alte Italy becomes a trusted solution.
Mecc Alte Italy – Optimal 400Hz Power Solution
Key Features of Mecc Alte Italy 400Hz Alternators
Mecc Alte, a renowned Italian alternator manufacturer, is globally recognized for its high-quality, durable, and customizable products—especially for aviation.
The 400Hz alternator series from Mecc Alte Italy is purpose-built to meet the strict technical standards of airport and aerospace systems. Notable features include:
High Frequency Stability: Maintains 400Hz ±0.5%, essential for sensitive avionics systems.
Compact & Efficient Design: Reduces installation costs and easily fits into both fixed and mobile GPU systems.
Harsh Environment Durability: Reliable in humid, dusty, or high-vibration areas typical of airport ramps.
Excellent Electromagnetic Compatibility: Ideal for complex electronic environments in aviation.
Cooling Options: Available with air or oil cooling to suit various system designs.
See more: Smaller but Stronger with NPE Space Saver by Mecc Alte
See more: Understanding the Dynamo Generator and Applications
Featured 400Hz Models from Mecc Alte Italy
Mecc Alte Italy offers a wide range of 400Hz alternators designed specifically for airport ground operations. Below are some of the most commonly used models:
HCP3 – 14 pole
Compact and moderate-capacity, ideal for mobile GPUs.
14-pole design ensures stable 400Hz output.
Low energy consumption, optimized for ground systems.
Best suited for frequent movement and tight installation spaces.
HCP32 – 20 pole
20-pole configuration enhances frequency stability and reduces vibration.
Rugged construction for fixed installations in terminals or maintenance areas.
Customizable with options for AVR and PMG.
Complies with CE and European safety standards.
HCP34 – 20 pole
Enhanced performance compared to HCP32.
Stable output ideal for simulation and aircraft system testing.
Performs well in harsh, humid, or dusty environments.
Compatible with both digital and analog control systems.
HCP34 – 24 pole
Highest pole count (24 poles), offering ultra-precise 400Hz frequency.
Perfect for radar, navigation, or air traffic control applications.
Industrial-grade housing with vibration resistance and high insulation.
Supports 24/7 continuous operation with minimal maintenance.
In addition, Mecc Alte alternators support:
PMG (Permanent Magnet Generator): Ensures smoother AVR operation and lower system noise.
Advanced Electronic AVR: Enables precise voltage regulation and fast load response.
Brushless Design: Reduces maintenance costs and increases lifespan.
Choosing Mecc Alte Italy for your airport’s 400Hz power generation isn’t just about electricity—it’s about long-term reliability, safety, and operational excellence across the entire aviation ground system.
Company name:
TTTT GLOBAL co Ltd,.
- Address: Landmark 4 Building, Vinhomes Central Park, 720A Dien Bien Phu Str, Ward 22, Binh Thanh District, Ho Chi Minh City, Vietnam.
- Website: https://ttttglobal.com/en/
- Hotline: +84286 2728 334
- Email: Info@ttttglobal.com
