High-Reliability 28VDC Power for Aircraft Maintenance, Hangar Testing, and GSE Systems
In the aerospace industry, 28VDC is the global standard for control systems and auxiliary power. Whether it is a Ground Power Unit (GPU), an automated test station in a hangar, or an avionics diagnostic platform, the requirement for stable, high-current, and interference-free power is absolute.
The MAH1000-220S28 by Guangdong Mingxin Technology is a ruggedized 1000W 220VAC to 28VDC Isolated Power Module. Designed for the grueling environments of airfields and maintenance facilities, it offers IP65 protection, massive thermal headroom, and military-grade reliability.
I. Why 28VDC Reliability is Critical for Aerospace & GSE
Most airport facilities provide standard 220VAC (176–264VAC) power. However, sensitive avionics and maintenance tools require 28VDC with high isolation to prevent grid spikes from damaging multi-million dollar aircraft components.
The MAH1000-220S28 addresses these challenges with:
Industrial-Grade AC-DC Conversion: 1000W of continuous power.
Galvanic Isolation: Protecting aircraft electronics from grid-side surges.
IP65 Sealing: Operates reliably in humid hangars, dusty airfields, and outdoor flight lines.
II. Technical Specifications: MAH1000-220S28
| Feature | Specification |
| Model | MAH1000-220S28 |
| Rated Power | 1000W |
| Input Voltage | 220VAC (Range: 176–264VAC) |
| Output Voltage | 28VDC (Standard Aerospace Bus) |
| Output Current | 35.7A (High Current Support) |
| Protection Rating | IP65 Waterproof & Dustproof |
| Dimensions | 240 × 182 × 81 mm |
| Housing | Sealed Aluminum Alloy with Integrated Fins |
| Safety Compliance | UL1950, IEC950 |
III. Key Applications in the Aviation Sector
1. Ground Support Equipment (GSE)
Ground Power Units (GPU): Auxiliary 28VDC for pre-flight checks.
Maintenance & Repair Organizations (MRO): Reliable power for hangar-based aircraft testing.
Battery Charging Systems: High-current auxiliary charging for aircraft lead-acid or NiCd batteries.
2. Avionics Testing & Support
Flight Instrument Calibration: Ultra-low ripple 28V for precision sensors.
Communication & Navigation Test Sets: EMI-filtered power to prevent signal interference.
Actuator & Relay Drive Systems: High-surge capability for testing mechanical components.
IV. Engineered Technical Advantages
1. Advanced EMI/EMC Filtering
The aviation environment is crowded with RF signals. Our built-in wide-band noise filters ensure the power supply does not interfere with cockpit communications or sensitive radar equipment.
2. Inrush Current Limitation
Equipped with a soft-start circuit, the MAH1000-220S28 prevents massive current spikes during startup, protecting your facility’s circuit breakers and increasing the lifespan of the internal components.
3. High Isolation & Surge Suppression
High-voltage electrical isolation between input and output acts as a "firewall," blocking lightning surges and grid transients from reaching the 28VDC bus.
4. Passive Thermal Management (Fanless)
Featuring a high-strength aluminum shell with integrated cooling fins, the module relies on natural convection. The absence of cooling fans removes the most common point of failure, allowing for maintenance-free operation in harsh environments.
V. Comprehensive Protection Framework
Input Protection: Under-voltage & Over-voltage lockout.
Output Protection: Short-circuit, Over-current, and Over-voltage protection.
Thermal Protection: Intelligent over-temperature shutdown and auto-recovery.
VI. About Guangdong Mingxin Technology Co., Ltd.
Based in Dongguan’s high-tech industrial corridor, Mingxin Technology is a premier manufacturer specializing in high-power AC-DC and DC-DC modules for critical infrastructure.
Expert Engineering: Veteran R&D team focused on industrial and aerospace power standards.
State-of-the-Art Production: Equipped with SMT, wave soldering, and automated intelligent aging systems.
Global Customization: We provide OEM/ODM services, offering customized power levels (600W-1000W), specific voltage rails, and reinforced vibration resistance.
Optimize Your Ground Support Systems Today
If you require a high-reliability 1000W 28VDC power supply for aviation or industrial applications, the MAH1000-220S28 is the professional's choice.
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