e28 Generator

e28 Generator

The direct current 28 volt generator was specially design to work with a wide range of small aircraft and helicopters that need 28 V-DC to start their engines. The design, versatile, modern and powerful, makes the unit unique against competitors because it has been created by a service provider company incorporating the improvements for an easy operation and a good maintenance of the equipment.

Download here the specifications sheet for the e28 generator.



Concept & Design.

The idea, design and its conception.


The conception of the e28 was planned from all the experiences had with other ground support equipment for over 30 years; today, the evolution in technology and electronics offers equipment that are more compact, sealed and non-reparable, because of this, the design and engineering team at AP Manufacturing decided to focus in a more simplified mechanical and electronic process of voltage generation, offering this new design that offers a reliable voltage output with simple systems with automatic voltage built-up, it's exterior was designed for easy access to the unit with removable panels created in galvanize metal sheets; the control panel provides easy operation by four simple buttons and a graphic interface that can be understood by anyone.



Performance & Systems.

New Fittings.



Perkins 1104C-44G2, diesel engine, inline 4 cylinder, operating at 1800 RPM, naturally aspirated Battery system: 12 Volt DC

• Intake air restriction indication
• Selectable on-off engine pre-heater for cold weather start Protections Systems:
• Low oil pressure shutdown
• High coolant temperature shutdown

Quiet System:


Standard low noise operation < 80 dB.
• All the air is canalized through the radiator and exists the unit ti the top reducing engine noise
• Body enclosure covered with acoustic material that is water repellant, assuring no corrosion built-up
• Cross-flow cylinder head for reduced noise




• 28.5 VDC output
• 800 amperes continuous rating at 28.5 VDC
• 2,000 amperes peak for aircraft engine starting
• Adjustable current limiting
• Voltage regulator with line drop compensation for proper voltage output
• Contactor Close switch with “CLOSED” light  




Structure and operation.

Be prepare for the operations, make the difference.

Panel Design:

The design of the operational panel is divided in to sides, engine to the left and generator to the right; in the middle you will find the hour meter, fuel gauge and panel/clearance lights switch.

Engine Controls and Gauges:
• Engine START switch with “ENGINE ON” light
• Engine STOP switch
• Digital Oil Pressure
• Low oil pressure engine shutdown fault light
• Digital Coolant Temperature (with high temp warning)
• High coolant temperature engine shutdown fault light
• Digital battery voltmeter
• Alternator fault light
• Digital Tachometer / RPM

Generator Controls and Gauges:
• Contactor CLOSE with green light
• Contactor OPEN
• Digital amp meter
• Digital volt meter
• Over voltage fault light