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28.5 V DC GPU

Functioning similar to a standard diesel generator it supplies electrical power to a parked aircraft on ground at 28.5V DC Voltage. This can be used for powering of various aircraft systems and also starting aircraft engines employing an electric starter mechanism.

Available in Towable Trailer mounted / Skid Mounted / Self propelled configurations.


  • Highly reliable Deutz / Cummins / Detroit Diesel / equivalent diesel engines
  • Digital system – Microcontroller based
  • Secure power supply to aircraft
  • Operations via GUI touch screen
  • Total Digital Monitoring of engine and output parameters
  • Fault Diagnosis – Standard Scope
  • Meets latest EPA norms
  • Walk Away – Protection and Control (Unattended Operation)
  • Low Noise level
  • Meets MIL and ARP Standards
  • MAK’s Remote Diagnosis and Monitoring System (RDMS) (Optional)

Technical Specifications

Rated Output 28.5V DC / 650A continuous, 2000A peak for 2 seconds
Make Deutz / Cummins / Detroit Diesel / Equivalent
Make: MAK
Model: MDC-650
Rating: 650A continuous, 2500A peak.
Voltage 28.5 VDC
AVR: Solid state with line drop compensation
Operating Parameters
Rated output: 28.5 V DC, Regulated at the socket end
Continuous output current: 650A
Peak output current 2000A peak
Metering Highly reliable GUI touch screen Display

Protection & Monitoring

The protection & Monitoring system is based on microcontroller system for optimum trouble free performance. The protections provided are

  • Under voltage trip
  • Over voltage trip
  • Over load trip
  • Over speed trip
  • Engine Low lube oil pressure shutdown
  • Engine High oil temperature shutdown
  • Engine V-Belt / Battery charge – failure shut down
  • Engine instrumentation: Oil pressure, Oil temperature, Fuel Level, Battery Voltage and machine run hour
  • Low fuel indication
  • Engine Air cleaner restriction indicator
  • Contactor ‘ON’ light

Operating Controls

  • Engine starting key / switch
  • Emergency stop push button
  • Contactor ON/OFF switch


28.5V DC Unit Using Commercial Mains Supply (3 PH, 50/60 HZ) or GPU?s 200/115V AC, 400 HZ power as inputs.

Note: Due to continuous development dimensions, layout, configuration and specifications are subject to change without notice.

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