28.5V DC voltage regulator with voltage mode PWM control and IPM high-frequency full-bridge conversion technology, featuring strong overcurrent capability and low output ripple.
Compact, lightweight, low-noise, and easy to operate.
Provide the required AC and DC power to the aircraft during pre-flight, post-flight, scheduled inspections, and troubleshooting operations.
Performance Features:
1. Utilizing high-frequency PWM and IPM full-bridge conversion technology, efficiency up to 85%
2. Excellent output stability: Source voltage effect ≤0.5%, load effect ≤0.5%
3. Output ripple less than ≤1%
4. Comprehensive protection features ensure the normal operation of power equipment and the safety of the load.
5. 10-turn voltage potentiometer, adjustable from 18V to 32V
6. 10-tap current adjustment potentiometer, which limits the output current value from 30% to 105% of the rated value under short-circuit and overload conditions.
7. Current Output Range: 100A to 2000A
8. LED voltage and current digital display, easy start/stop operation
Applicable Occasions:
Aircraft and onboard equipment startup and testing
Manufacturing, inspection, and maintenance of radar, navigation, and other aviation electronic equipment, as well as on-site repairs and maintenance for aircraft
Aircraft Simulation Testing
Aerospace, vehicle, ship, and other specialized DC testing and power supply for any situation requiring DC power.
Standard of Execution:
GJB 181A-2003 "Aircraft Power Supply Characteristics"
GJB 572-88 "Characteristics and General Requirements for Aircraft Ground Power Supply"
MH/T 6018-1999 "Ground Static Power"
28V Aviation DC Power Supply Technical Appendix:
| Model | RAD28-______ |
| Output Current | Rated 50A-3500A (customizable to customer's requirements) for unattended 24/7 continuous operation |
| Peak Current | Customized according to customer requirements |
| Circuit topology | SPWM/IGBT Full-Bridge Circuit |
| Dynamic Characteristics | Overshoot and recovery time meet the requirements of GJB572 regulations. |
| Input Method | 220V±15%/380V±15% 50HZ±5HZ |
| Output Voltage | 28V DC (adjustable range 0-32V) |
| Load regulation | ±0.5%FS |
| Waveshaped Voltage | ≤1% |
| Power voltage regulation ratio | ±0.5%FS |
| Power Factor Correction | ±0.5%FS |
| Load Adjustment Rate | ±1%FS |
| Display Control Method | LCD Touch Screen Display, with both remote and local control options |
| Voltage Display Accuracy | ±1%FS |
| Current Display Accuracy | ±2%FS |
| Protection Method | Phase Loss, Overvoltage, Undervoltage, Reverse Flow Protection Overvoltage, undervoltage, short-circuit, current limiting, inverter overcurrent, internal overheating |
| Average Repair Time | ＜20 minutes |
| Overall Efficiency | 90% |
| In-and-out line method | Power side in and out cables |
| Noise | ≤65dB at 1 meter from the cabinet |
| Insulation resistance, voltage withstand | 20 Megohm, 1800V/AC, 1M1N |
| Airflow direction for heat dissipation | Forced air cooling with air outlets at the front and sides, and air intake at the back |
| Application Environment | Temperature -25 to 65°C, Humidity 0 to 90% non-condensing, anti-corrosion and alkali-resistant treatment |
Note: This power supply has been treated with appropriate electromagnetic compatibility measures and is protected against moisture, smoke, and dampness.
