Ground Power Unit (GPU)

40/60/90/140/180 kVA – 400 Hz – 28.5V DC GPU, Battery Cart

Ground Support Equipment for aircraft supplies power to a parked aircraft on ground through 200 / 115V 400Hz AC and / or 28.5V DC Voltages.

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.

Overview

Ground Support Equipment for aircraft supplies power to a parked aircraft on ground through 200 / 115V 400Hz AC and / or 28.5V DC Voltages.

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.

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

Power Force manufactures GPUs for commercial and defense applications since last 3 decades and is a pioneer of digital 400Hz GPUs across the world.

A diesel engine/electric motor coupled to Power Force’s highly reliable alternator provides a perfect output to your aircrafts. With a touchscreen control panel and interactive GUI, this GPU is easy to operate and effortless to maintain.

Power Force AC GPUs can be supplied with additional 28.5V DC module and small 50Hz invertors for obtaining commercial power voltage for tools, appliances…. etc during aircraft maintenance.

Power Force RDMS – comes as a standard feature with all GSE, it is a feature-rich software built for remote operations of Power Force GSE viz parameter details, fault alarms, alerts and periodic maintenance schedule.

GPU – TECHNICAL SPECIFICATION
PRIME MOVER
ENGINE : Cummins / Deutz or Equivalent diesel engine
ALTERNATOR : MAK brushless, 3 phase, constant voltage
alternator with in-built MAK AVR
INSULATION : Class H
OUTPUT CHARACTERISTICS
AC OUTPUT : 40/60/90/140/180 KVA at 0.8 pf lagging
POWER :3 phase 4 wire system
VOLTAGE : 115V (Line to Neutral) and 200V (Line to Line).
VOLTAGE UNBALANCE : a)1% at balanced load.: b) Within 4% with 1/3rd load on one phase
with two other phases unloaded.
VOLTAGE REGULATION : ±1%
VOLTAGE MODULATION : ±1%
VOLTAGE TRANSIENT : ±20% and ±1% of steady state value
recovery within 200 milli seconds.
PHASE DIFFERENCE : 120°±1.50°
FREQUENCY : 400 Hz
FREQUENCY REGULATION : ±1%
FREQUENCY MODULATION : ±0.5%
FREQUENCY TRANSIENT : 385 to 415 Hz, ±1% of steady state value
recovery within 2 seconds.
THD : <2%

SPECIAL FEATURES
MONITORING
Following parameters are displayed through GUI touch screen on a graphical format for quick understanding
  • Engine lube oil pressure
  • Engine coolant temperature
  • Engine RPM
  • Fuel level
  • Engine hours run
  • Battery voltage
  • Output voltage
  • Output frequency
  • Load currents across all 3 phase
  • Maintenance Schedule

OPERATIONAL PROTECTIONS
A. For Engine B. For Output
  • Low lube oil pressure shutdown
  • High coolant temperature shutdown
  • Over speed shutdown
  • Low fuel shutdown
  • Charge fail (only indication)
  • Under voltage trip
  • Over voltage trip
  • Over load trip
  • Neutral open trip
  • Phase rotation trip
  • Under frequency shutdown
  • Over frequency shutdown
Electric motor as prime mover option available
MOUNTING CONFIGURATION :
Towable trailer mounted / Self propelled / Skid mounted for truck
* Due to continuous development, the dimensions, layout, configuration and specifications are subject to change without notice.

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.

 

28.5V DC GPU – TECHNICAL SPECIFICATION

 
SUB COMPONENTS
ENGINE : Cummins / Deutz / Isuzu or Equivalent diesel engine
ALTERNATOR : MAK brushless, 3 phase, constant low voltage
alternator with in-built MAK AVR
INSULATION : Class H
RECTIFIER : 12 Pulse Rectifier
OUTPUT CHARACTERISTICS
DC OUTPUT VOLT : 28.5V
POWER : 11.4kW/17.1kW/22.8kW
VOLTAGE REGULATION : ±1%
CONTINUOUS CURRENT : 400A/600A/800A
AIRCRAFT STARTING CURRENT : 1500A/2000A
RIPPLE AMPLITUDE : <1.5V @ Full Load
 

CONTROL PANEL – MAK GSEM-V8

 
Hi-Tech Control System with Touch Screen GUI
 

SPECIAL FEATURES

 
Remote Diagnostics and Monitoring through Cloud (RDMS)
MONITORING
Following parameters are displayed through GUI touch screen on a graphical format for quick understanding
  • Engine lube oil pressure
  • Engine coolant temperature
  • Engine RPM
  • Fuel level
  • Engine hours run
  • Battery voltage
  • Output voltage
  • Load current
  • Maintenance Schedule
 

OPERATIONAL PROTECTIONS

 
A. For Engine B. For Output
  • Low lube oil pressure shutdown
  • High coolant temperature shutdown
  • Over speed shutdown
  • Low fuel warning & shutdown
  • Charge fail warning
  • Under voltage trip
  • Over voltage trip
  • Over load trip

40 KVA AC / DC GPU, 90 KVA AC / DC GPU, 140 KVA AC / DC GPU, 180 KVA AC / DC GPU

Functioning similar to a standard diesel generator it supplies power to a parked aircraft on ground through 200 / 115V 400Hz AC and / or 28.5V DC Voltages. 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.

  • All Standard Features of AC Ground Power Units
  • Highly efficient Transformer and Rectifier Unit
  • State of the art microcontroller based digital protection and monitoring system ? software programmed trip limits ? self test facility
  • Star Delta Full Wave Rectifier Bridge configuration ensures low ripple DC Power output
  • Separate Monitoring and Protection circuit for DC Power
  • All additional components for DC system are housed within the all weather canopy itself
  • AC GPUs are designed with provision to incorporate DC components even at a post production stage
  • MAK’s Remote Diagnostic and Monitoring Systems (optional)