FLYTEK GPU – 28 VDC GPU

FlyTek 28 VDC GPUs (Ground Power Units)  provide continuous output power for a wide range of aircraft. Through innovative research and development, FlyTek 28 VDC GPUs provide continuous DC power to both military and civilian aircraft that are on the ground to start the engine, the APU (Auxiliary Power Unit) of the aircraft, as well as for the onboard power supply. The units are available in mobile or fixed configurations, suitable for either hangar or ramp use.

Download 28 VDC GPU

Input

  • State of the art semiconductor technology (IGBT) Rectifier
  • Power Factor Correction (PF= 1)
  • 95% efficiency
  • 4 Quadrant Operation (better response of the system and safer operation for NBPT)
  • Low input harmonics (<1.5% THDi), to comply with the strictest regulations @ any load

Output

  • Voltage compensation (Load Dependent or via Remote Feedback – Real PLUG & PLAY. Connect GPU to aircraft and voltage compensation is done automatically, no user adjustment required or additional accessories)
  • 4 Quadrant Operation (better response of the system and safer operation for NBPT)
  • Vector control Inverter for better response and higher efficiency.

Efficiency

  • Up to 90% efficiency
  • Green Standby Function – losses: 20 W
  • No load losses: <0.5 kW.

Technology

  • Enclosure Protection class up to IP55
  • Enclosure with C5-M coating
  • Over/Under voltage at output
    • Under voltage <2-V (4 sec)
    • Over voltage <34V (4 sec)
    • Short Circuit <5V at current limit (4 sec)
  • Overload capability designed for:
    • Power stage 150% – Continuous
    • Magnetics 120% – Continuous
  • Overload protections set at.
    • 2400A – 5 seconds
  • Over temperature protection

Norms and Standards

Aviation

  • ISO 6858 – Aircraft ground support electric supplies
  • SAE ARP 5015 – Ground equipment 400 Hz ground power performance requirement

Military

  • MIL-STD-704 – Aircraft electric power characteristics

EMC

  • EN6100-6-4 – Electromagnetic compatibility Generic emission standard
  • EN6100-6-2 – Generic immunity standard

Safety

  • IEC 60529 Degrees of protection provided by enclosures (IP Code)
  • IEC 62477-1 – Safety requirements for power electronic converter systems and equipment

Environmental

  • Dry heat test (steady state) IEC 60068-2-2 subclause 5.3
  • Damp heat test IEC 60068-2-78 subclause 6
  • Vibration test IEC 60068-2-6 subclause 6
  • Salt mist test IEC 60068-2-52 subclause 6
  • Dust and sand test Test Lc1 of IEC 60068-2-68

Specifications

Input

  • 4 Wire
  • 3 phase 460V / 480V AC | ± 10%
  • 50/60Hz | ± 10%
  • Input current harmonics | <2% @ Full Load

Output

  • Output 28.5VDC | ± 1%
  • Continuous current capability (at 28.5VDC) | 600A
  • Maximum Current Limit (at 28VDC) | 2400A for up to 5sec
  • Current Limit adjusting steps (from 600A) | ± 0.5%
  • Voltage regulation up to 600A | 1%
  • Ripple | <0.5%
  • Dynamic Recovery to 90% VDC | <40ms
  • Voltage Compensation | 0-4V up to 600A (remote feedback)
  • Galvanic Isolation | 800Hz Transformer
  • IGBT + DIODE Rectifier

Environmental Conditions

  • Coolant temperature (max) | Forced air up to 40°C
  • Ambient temperature (min/max) | -40°C to 40°C
  • Relative humidity (min/max) | 0% to 90% without condensation
  • Pollution degree | 2
  • OVC (Overvoltage Category) | 3
  • Altitude | Up to 2000m

Technical Drawing