Engine Start
Portable 28.5V DC Ground Power Unit
- Current Output: 100A – 500A Peak
- Input Voltage: 380V/220V ±15%
- Target Craft: Turboprops & Helos
13+
Years Factory Proven
930 kVA
Max Parallel Capacity
< 2%
Aviation THD Profile
ISO 9001
TÜV Verified Facility
Factory Direct Catalog
High-Performance Aircraft Ground Support Units & Frequency Converters
Engineered for high-stress line maintenance, corporate hangar installations, rotary wings, and executive aviation platforms in Borgo Maggiore and the surrounding Adriatic corridor.
Triple Output
Triple Output 28.5V 100–600A GPU
- Output Channels: 3 Independent Out
- Continuous Load: Up to 600A Total
- Application: MRO Flight-Line Test
Single Phase
220VAC to 28.5VDC 200A Aircraft GPU
- Rated Power: 5.7 kW Constant
- Input Grid: Single-Phase 220V
- Cooling Mode: Forced Pure Air Flow
Apron Central
930kVA 3-Phase 400Hz Aviation GPU
- Power Capacity: 930 kVA Ultra-Heavy
- Voltage / Freq: 115/200VAC, 400Hz
- Overload Rating: 300% for 5s Transient
Solid State
630kVA 400Hz Static Aviation Power
- Efficiency Rating: ≥ 94% Solid-State
- THD Voltage: < 1.5% Linear Loads
- Protection: Over/Under V, I, Thermal
Avionics Bench
115V 400Hz Converter 15–300kVA
- Input Grid: 50Hz / 60Hz 3-Phase
- Output Waveform: Pure Sine Wave
- Standard: MIL-STD-704F & ISO 6858
Dual Conversion
40–500kVA Solid-State Converter
- Topology: IGBT PWM Inversion
- Flexibility: 50Hz ↔ 60Hz ↔ 400Hz
- Interface: RS485 Modbus RTU
Hangar Compact
45kVA 400Hz Static Converter Hangar
- Configuration: 3-Phase In / 1-Phase Out
- Cabinet Footprint: Ultra-Compact Footprint
- Acoustic Noise: < 65 dBA @ 1 Meter
Aviation GSE Whitepaper
Engineering Architecture: Solid-State Static GPUs vs. Rotary Motor-Generators
Comprehensive technical breakdown of transient response, power quality benchmarks, and thermal dynamics in localized European microclimates.
Harmonic Mitigation & Precision IGBT PWM Inversion
Legacy aircraft ground power architecture relied on synchronous motor-generator (M-G) sets. While robust, rotary systems suffer from rotational mechanical wear, bearing fatigue, significant harmonic distortion under non-linear avionic loads, and poor operating efficiency below 70%. In modern business jet hangars and regional aerodrome infrastructures like those surrounding Borgo Maggiore and the Republic of San Marino, solid-state Ground Power Units (GPUs) provide essential efficiency gains.
Guangdong Fenvix utilizes multi-pulse diode rectifiers combined with high-frequency IGBT (Insulated Gate Bipolar Transistor) pulse-width modulation (PWM) inversion stages. By switching at frequencies above 15 kHz, output voltage Total Harmonic Distortion (THD) is suppressed below 2% linear and under 3% for demanding non-linear digital avionics architectures, fully adhering to MIL-STD-704F, ISO 6858, and EN 2282 standards.
Dynamic Voltage Compensation & Line Drop Control
A chronic challenge encountered during corporate turboprop and jet ground run-ups is inductive line loss over extended 400Hz aircraft cabling. Because reactance increases linearly with frequency ($X_L = 2\pi f L$), 400Hz power distribution faces impedance drops roughly eight times larger than standard 50Hz mains power.
Fenvix GPUs integrate an automatic line-drop compensation algorithm that continuously measures the real-time RMS current delivery and dynamically regulates the converter output bridge between 115V and 128V. This guarantees that modern fly-by-wire flight control computers, radar pods, and cabin conditioning equipment consistently receive the calibrated 115/200V ±1% nominal voltage directly at the aircraft connector receptacle (NATO standard STANAG 3302 or ISO 461).
Dual 28.5V DC Engine-Start Transient Reserves
For light business aircraft and utility rotorcraft operating throughout Central Italy and San Marino, starting high-compression turbine engines produces severe current demands (frequently exceeding 1200A to 1800A for durations up to 3 to 10 seconds). Inadequate ground power during spool-up results in dangerous "hot starts," risking turbine blade creep or combustion chamber warping.
Our 28.5V DC solid-state rectifiers feature dual-loop current/voltage feedback systems. The primary power loop regulates continuous DC current up to 600A with ripple held strictly under 1%, while the integrated high-capacity capacitive-choke buffer stage instantly yields up to 2000A inrush capability without causing output voltage sag below the safe avionics trip threshold of 20V DC.
Operational Context
Localized Applications in Borgo Maggiore & Central Appenine Aviation
Deploying specialized aerospace ground equipment to address local geography, regulatory demands, and operational requirements across San Marino and the Emilia-Romagna airspace.
Executive Helicopter Base Operations
Due to Mount Titano's elevation profiles, corporate air-taxi and VIP rotary flight operations connect Borgo Maggiore to Milan, Rome, and coastal ports. Static 28.5V DC GPU units serve private helipads and aerodrome bases (including Torraccia airfield and nearby Rimini-San Marino corridor) without the emissions or noise of diesel carts.
Private Hangar & Aircraft Maintenance
Borgo Maggiore hosts modern light-industrial workshops and technical support providers. Fenvix compact 45kVA to 100kVA static frequency converters operate on Italian-standard 400V 50Hz grid supplies, cleanly transforming power to 115V 400Hz single-phase or three-phase configurations for avionics calibration benches and system overhauls.
San Marino Aircraft Registry (T7) Checks
The internationally renowned San Marino Aircraft Registry (T7) oversees numerous foreign business jets. Hangars performing pre-registration airworthiness inspections require ultra-stable electrical power with documented low THD to run complete diagnostic checks without burning auxiliary fuel or running APUs indoors.
Future Trajectory
Aviation Ground Support Trends Across San Marino & Southern Europe
Navigating EU Net-Zero goals, hangar workplace acoustic restrictions, and smart grid automation.
Complete Phase-Out of Diesel Auxiliary GSE
Stricter municipal emissions laws in Northern Italy and the San Marino Republic discourage the use of diesel-powered ground power generators inside maintenance bays. Modern hangars are shifting entirely to zero-emission solid-state grid-connected converters, reducing direct CO2 output and toxic nitrogen oxide fumes.
Acoustic Compliance & Operator Health
Rotary frequency converters typically emit noise levels ranging between 80 to 92 dBA, causing severe fatigue in indoor hangar environments. High-efficiency solid-state GPUs utilize heat pipe assemblies, variable-frequency ECM cooling fans, and advanced thermal channels to drop sound levels below 65 dBA, safeguarding technician hearing.
Telemetry, BMS & Automated Logging
Contemporary aerospace standards demand precise recordkeeping of ground power cycles. Modern Fenvix static converters feature RS485 / Modbus RTU, Ethernet, and dry-contact interfaces that seamlessly integrate into hangar Building Management Systems (BMS), logging consumption, peak currents, and operating temperatures for auditing.
Factory Verifiable Competence
Guangdong Fenvix: Direct OEM Engineering & Custom Manufacturing
Since 2013, our 3,000m² factory delivers end-to-end control from sheet metal stamping to full-capacity burn-in testing.
In-House Sheet Metal & Busbars
We manufacture our own mechanical enclosures and high-conductivity copper busbars utilizing precision plate shearing, CNC punching, milling, drilling, and tapping equipment directly within our factory floor.
No Minimum Order (No MOQ)
From single-unit prototypes configured for experimental hangars to series fleet batches for international airports, Fenvix eliminates intermediary markups by dealing directly as the true design manufacturer.
100% Load-Tested & Burned-In
Each GPU undergoes rigorous high-voltage insulation tests, harmonic oscilloscope verification under stepped inductive load banks, and thermal stress cycling before receiving final export packaging.
International Certifications
Our facility operates under an ISO 9001 certified quality management system, verified on-site by TÜV Rheinland. Selected aviation and industrial power supplies fully comply with CE, LVD, EMC, and RoHS directives.
Main Manufacturing Workshop
Finished Cabinet Enclosures
Harmonic Oscilloscope Testing
CNC Plate Fabrication
Purchasing & Engineering FAQ
Frequently Asked Questions by Borgo Maggiore & European Buyers
Essential guidance on electrical grid compatibility, customs clearance, cooling dynamics, and trade terms.
Can Fenvix GPUs run on Italian/San Marino 400V 50Hz utility grids without an extra transformer?
Yes. Our static frequency converters and DC GPUs are engineered with universal wide-range three-phase inputs: 380V, 400V, or 415V AC at 50Hz/60Hz ±15%. They connect directly to standard European low-voltage industrial mains distribution panels without requiring separate upstream balancing transformers.
What specific electrical parameters are required to build a custom GPU?
To configure your unit accurately, please share: your facility's input mains (e.g., 400V 3-phase 50Hz), the desired output configuration (28.5V DC, 115V/200V AC 400Hz, or dual-mode), peak continuous and short-time starting currents, maximum acceptable cable length to the aircraft, and installation environment (indoor hangar or all-weather outdoor towable trailer).
How does Fenvix prevent overheating during summer heat waves in the Italian Appenines?
Summer temperatures around Mount Titano and Central Italy can exceed 38°C in enclosed hangars. Our units feature generously oversized extruded-aluminum heat sinks, conformal-coated circuit cards resistant to salt spray, thermal sensors embedded directly into the IGBT power modules, and intelligent variable-speed exhaust fans rated for ambient environments up to +50°C.
What incoterms and transport logistics are supported for delivery to Borgo Maggiore?
We provide full international commercial logistics including CIF (Genoa / Ancona / Ravenna ports), CIP (Bologna Guglielmo Marconi Airport or Rimini Airport), DAP, and full DDP door-to-door delivery directly to your facility in Borgo Maggiore, including customs processing and insured maritime/air crates.
How do you verify compliance with avionics standards like MIL-STD-704F?
Every manufactured unit is rigorously evaluated on a calibrated digital test rack. We record the voltage regulation stability (±1%), voltage phase balance, frequency regulation (±0.1%), crest factor (1.414 ±0.07), and Total Harmonic Distortion (THD < 2%) under zero, 50%, and 100% full-capacity simulated loads. The full test report is provided inside the shipment documentation.
What after-sales service and replacement parts support do you provide?
Fenvix provides lifetime remote technical support via dedicated video commissioning and diagnostic sessions. Units are built with modular plug-and-play architecture, enabling sub-assembly or controller card swaps using standard tools. Replacement modules are stocked and dispatched rapidly via air express (DHL/FedEx) to minimize ground downtime.
Consult an Aviation Power Engineer for Borgo Maggiore Applications
Connect directly with our factory engineering team to request customized schematics, electrical sizing consultations, or formal factory pricing. No minimum order quantity required.