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GROUND POWER UNIT

Ground Power Unit

Ground Support Equipment for  Aircraft ground support equipment supplies power to a parked aircraft at 115/200 V, 400 Hz AC and/or 28.5 V DC.

This power can be used to operate various aircraft systems and to start aircraft engines equipped with an electric starter.

Available in towable trailer-mounted, skid-mounted and self-propelled configurations.

Click here to see : 15TR Combo Unit - Ground Power and Cooling Unit (GPCU) ACU + GPU

60 / 90 / 140 / 180 kVA at 0.8 PF (Lagging)AC OUTPUT
400 HzFREQUENCY
115 V L-N / 200 V L-LVOLTAGE
◉Need help choosing?Talk to our product experts for the right configuration.
PRODUCT INFORMATION

Product Overview

MAK manufactures Ground Power Units (GPUs) for commercial and defence applications and has over three decades of experience in digital 400 Hz GPU technology.
A diesel engine or electric motor coupled with MAK’s highly reliable alternator provides stable and reliable power to aircraft. With a touchscreen control panel and interactive GUI, the GPU is easy to operate and maintain.
The MAK AC Ground Power Unit can also be supplied with an additional 28.5 V DC module and a compact 50 Hz inverter to provide commercial power for tools, appliances, and other equipment used during aircraft maintenance.
MAK RDMS comes as a standard feature with MAK Ground Support Equipment (GSE). It is a feature-rich remote monitoring and diagnostic system that provides parameter monitoring, fault alarms, alerts, and periodic maintenance information. For more details, please refer to the MAK RDMS brochure.

Product Overview
28.5V DC GPU
28.5V DC GPU

28.5V DC GPU

MAK 28.5 V DC GPUs powered by diesel engines are designed for smaller turboprop aircraft requiring 600 A / 800 A DC and starting currents of 1500 A / 2500 A DC. These units are designed to be compact, considering the space constraints around smaller aircraft.

Battery Cart
Battery Cart

Battery Cart

MAK Battery carts provide 28.5V DC output through its specially manufactured high discharge batteries. These battery carts contribute to environmental friendliness, noiseless operation and need regular maintenance activities.

Self Propelled GPU
Self Propelled GPU

Self Propelled GPU

MAK designs and manufactures self-propelled type GPUs for customers requiring quick shuttle across aircraft bays and also to cover long distance between GSE workshop and aircraft bays. Self-propelled systems operates on electric or hydraulic system and can also be made skid mounted for fitting on standard commercial trucks based on customer discretion.

15TR Combo Unit GPCU (ACU+GPU)
Ground Power and Cooling Unit (GPCU)

15TR Combo Unit GPCU (ACU+GPU)

Control Panel
Control Panel

Control Panel

MAK GSE Monitor – A touchscreen control panel with an interactive GUI that displays a graphical summary of key parameters, along with built-in maintenance charts, fault logs, and troubleshooting guides.

MAK RDMS
MAK RDMS

MAK RDMS

A unique feature of MAK that comes as standard with MAK GSE. It is feature rich software and hardware built for remote monitoring and diagnostics with parameter monitoring, Geo locations, fault alarms, maintenance alerts etc. It is a complete management tool for a GSE-Head. On touch of a button one can communicate with the equipment and complete history is made available at finger tips.

Structure
GPU Structure

Structure

MAK Ground Power Unit is built with strength to handle tough operating conditions under any weather whilst being compact and effortless maneuverable facilitating smooth towing.

Standards
GPU Standards

Standards

MAK GPU’s are designed to comply with stringent standards such as AHM, ARP, MIL..etc. MAK GPU’s are CE Certified enabling universal usage and provides customers a unit par excellence.

Protections
GPU Protections

Protections

There are various operational and physical protection mechanisms designed & Incorporated in MAK GPUs making them operationally fail-safe and secure during any untoward faults or basic mishandling.

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
PHASE DIFFERENCE
120°±1.50°
POWER
3 phase 4 wire system
FREQUENCY
400 Hz
VOLTAGE
115V (Line to Neutral) and 200V (Line to Line).
FREQUENCY REGULATION
±1%
VOLTAGE UNBALANCE
a) 1% at balanced load; b) Within 4% with 1/3rd load on one phase with two other phases unloaded.
FREQUENCY MODULATION
±0.5%
VOLTAGE REGULATION
±1%
FREQUENCY TRANSIENT
385 to 415 Hz, ±1% of steady state value recovery within 2 seconds.
VOLTAGE MODULATION
±1%
THD
<2%
VOLTAGE TRANSIENT
±20% and ±1% of steady state value recovery within 200 milli seconds.

SPECIAL FEATURES

MONITORING

Following parameters are displayed through GUI touchscreen 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

  • Low lube oil pressure shutdown
  • High coolant temperature shutdown
  • Over speed shutdown
  • Low fuel shutdown
  • Charge fail (only indication)

B. For Output

  • Under voltage trip
  • Over voltage trip
  • Over load trip
  • Neutral open trip
  • Phase rotation trip
  • Under frequency shutdown
  • Over frequency shutdown