28V DC Power SupplyUtilizing PWM control based on voltage mode and IPM high-frequency full-bridge conversion technology, it boasts 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 before, after flights, during scheduled inspections, and in troubleshooting work.
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 wave pattern less than ≤1%
4. Comprehensive protective functions ensure the normal operation of power equipment and the safety of loads
10-tap voltage adjustable potentiometer, adjustable voltage range of 18V to 32V
6. 10-tap current adjustment potentiometer, capable of limiting the output current value to between 30% and 105% of the rated value during short circuit and overload conditions.
7. Current Output Range: 100A - 2000A
8. LED voltage and current digital display, easy start/stop operation
Applicable Occasions:
Aircraft and Onboard Equipment Startup and Testing
Manufacturing, testing, and maintenance of aviation field equipment such as radar, navigation, and other consumer electronic devices
Aircraft Simulation Testing
Aerospace, vehicle, ship, and other specialized DC testing and power supply applications, as well as any other scenarios requiring DC power.
Standard of Execution:
GJB 181A-2003 "Aircraft Power Supply Characteristics"
GJB 572-88 Specifications for Characteristics and General Requirements of Aircraft Ground Power Supply
MH/T 6018-1999 "Ground Static Power"
Appendix: 28V Aviation DC Power Supply Technology
| Model | RAD28-______ |
| Output Current | Rated 50A-3500A ( customizable according to customer requirements ) capable of unattended 24/7 operation |
| Peak Current | Customized according to customer requirements |
| Circuit topology structure | SPWM/IGBT Full-Bridge Circuit |
| Dynamic Properties | 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 |
| 纹波电压 - Ripple Voltage | ≤1% |
| Power Voltage Stabilization Rate | ±0.5%FS |
| Power Regulation Ratio | ±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, and Reverse Flow Protection Overvoltage, undervoltage, short circuit, current limiting, inverter overcurrent, internal overheating |
| Average Repair Time | ＜20 minutes |
| Overall Equipment Efficiency | 90% |
| Inbound and outbound line methods | Power side in and out cables |
| Noise | ≤65db at 1 meter from the cabinet |
| Insulation resistance, voltage resistance | 20 MΩ, 1800V/AC, 1M1N |
| Airflow direction for heat dissipation | Forced air-cooling, front and side exhaust, back intake |
| Application Environment | Temperature -25-65℃; Humidity 0-90% non-condensing; Corrosion and acid-base resistant treatment |
Note: This power supply has been treated with appropriate electromagnetic compatibility measures, as well as moisture, smoke, and dampness prevention.
