28V Ground Power Unit
The 28.5V DC regulated power supply adopts voltage-mode PWM control and IPM high-frequency full-bridge conversion technology, which has fast dynamic response, strong overcurrent capacity and low output ripple.
It has the advantages of small size, light weight, low noise, high efficiency and simple operation.
It can provide the necessary AC and DC power to the aircraft during pre-flight, post-flight, scheduled maintenance, and troubleshooting operations.
Product Description
Performance characteristics:
- Employs high-frequency PWM and IPM full-bridge conversion technology, achieving an efficiency exceeding 85%.
- Excellent output stability: source voltage effect ≤0.5%, load effect ≤0.5%.
- Output ripple is less than 1%.
- Comprehensive protection functions ensure the normal operation of power supply equipment and the safety of the load.
- 10-turn voltage adjustment potentiometer, adjustable within the range of 18V to 32V.
- 10-turn current adjustment potentiometer limits the output current from 30% to 105% of the rated value under short-circuit and overload conditions.
- Current output range: 100A～2000A
- LED voltage and current digital display, convenient start/stop operation.
Applicable occasions:
Aircraft and airborne equipment startup and testing
Manufacturing, testing, and repair of military electronic equipment such as radar and navigation systems; and aircraft field inspection and maintenance.
Aircraft simulation test
DC power supply for special applications in defense facilities such as aerospace, vehicles, and ships, as well as any other occasions requiring DC power.
Implementation Standard:
GJB 181A-2003 Aircraft Power Supply Characteristics
GJB 572-88 “Characteristics and General Requirements of Aircraft Ground Power Supply”
MH/T 6018-1999 Ground Static Power Source
Appendix to 28V Aviation DC Power Supply Technology:
| Model | ACME28-______ |
| Output current | Rated 50A-3500A (customizable according to customer requirements) can operate unattended for 24 hours a day. |
| Peak current | Customized according to customer requirements |
| Circuit topology | SPWM/IGBT full-bridge circuit |
| Dynamic characteristics | The overshoot and recovery time meet the relevant requirements of GJB572. |
| Input method | 220V±15%/380V±15% 50HZ±5HZ |
| Output voltage | 28V/DC (adjustable range 0-32V) |
| Load stability | ±0.5%FS |
| Ripple voltage | ≤1% |
| Power supply regulation | ±0.5%FS |
| Power regulation | ±0.5%FS |
| Load regulation | ±1%FS |
| Display control method | LCD touch screen, supports both remote and local control. |
| Voltage display accuracy | ±1%FS |
| Current display accuracy | ±2%FS |
| Protection methods | Input phase loss, overvoltage, undervoltage, and reverse current protection; Output overvoltage, undervoltage, short circuit, current limiting, inverter overcurrent, internal overheating |
| Mean Repair Time | <20 minutes |
| Overall efficiency | 90% |
| Incoming and outgoing line methods | Power supply side entry and exit cables |
| noise | ≤65db, 1 meter away from the server rack |
| Insulation resistance and withstand voltage | 20 megohms 1800V/AC 1M1N |
| Heat dissipation intake and exhaust methods | Forced air cooling, with air outlets at the front and sides, and air intake at the back. |
| Application Environment | Temperature -25-65℃, humidity 0-90%, non-condensing state, anti-corrosion and acid/alkali resistant treatment. |
Note: This power supply has undergone appropriate electromagnetic compatibility measures and has been treated for moisture-proofing, smoke-proofing, and damp-proofing.
