Diesel Generator Basics

What Are the Main Components of a Diesel Generator?
Explore each major component of a diesel generator and its function, from the engine to the AVR, to aid in selection, service, and troubleshooting.
Understanding Load Types and Starting Characteristic
Learn how load types affect generator sizing—from motor starting to harmonics—and how to size generators accurately with Jubaili Bros expertise.
How Diesel Generator Alternators Work
Understand how alternators, excitation systems, and AVRs affect generator performance, starting kVA, and voltage stability.
Colling and Ventilation Requirements
Poor cooling leads to shutdowns. Understand radiator types, airflow design, and heat rejection for reliable generator operation.
kW vs kVA: Understanding Generator Power Ratings
Learn the difference between kW and kVA, how power factor affects sizing, and how to choose the right generator for your application.
Prime, Standby, and Continuous Generator Ratings
Learn how to choose between Standby, Prime, and Continuous generator ratings and why it matters for performance, warranty, and lifecycle cost.
How to Calculate Electrical Load
Learn how to calculate generator load accurately using kW, kVA, diversity, and inrush factors to avoid undersizing and ensure performance.

DEPENDABLE POWER

Jubaili Bros provides dependable energy solutions that customers can trust upon, leveraging nearly five decades of engineering excellence, world-class component reliability, and Jubaili’s unique ownership experience.

ABOUT JUBAILI BROS

ENGINEERING EXCELLENCE

Nearly fifty years experience in the design, manufacturing, and deployment of power generation solutions across a myriad of applications and geographies.

RELIABILITY

Jubaili solutions are designed for durability, built in specialized plants and in close collaboration with global leaders in the energy space.

AFTERSALES EXPERIENCE

Our unique aftersales experience and our own warranty help customers to prevent downtime and extend the lifespan of products.

ENERGY SOLUTIONS

Diesel and gas generators, solar, batteries, inverters, and lighting applications.

AFTERSALES

Maximize uptime and extend the life of your Jubaili equipment with our unique aftersales capabilities.

EXPLORE SERVICE

MAINTENANCE CONTRACTS

Enjoy complete peace of mind in the running of your generator.

ENGINE OVERHAULS

Jubaili generators have components built into withstand multiple lives. Unlock a second life with engine overhauls.

FIELD REPAIRS

Our teams are readily available to rapidly respond to any issues that you may experience in your operations.

JUBAILI WARRANTY

Always directly with Jubaili and no one else.

ORIGINAL SPARE PARTS

Marapco spare parts are identical to those used in manufacturing, guaranteeing optimal compatibility and performance.

BROWSE PARTS

PREVENTIVE MAINTENANCE

All the essential parts to keep your equipment in great condition.

REPAIRS

High availability of repair parts to keep your generator running.

OVERHAULING

Complete set of parts required to overhaul engines.

REPOWER

Minimize downtime with a cost efficient, swift engine swap

CONTACT US

Speak to a Jubaili Bros expert via the channel of your preference.

REQUEST CALL BACK

CHAT

Click on the on the message icon at the bottom of the screen to text our agents.

CALL

Ring us in any of our branches and speak directly to one of our experts.

WRITE

Send us your message using the contact form and we will get back to you over your channel of choice.

JUBAILI STORIES

In-depth solution showcases, expert insights, and news on our latest offerings.

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Jubaili Bros delivered synchronized diesel power and acoustic insulation for Neptune International, ensuring 24/7 production in Ghana’s agro sector.
Reborn Power: Giving Your Jubaili Bros Diesel Generator a Second Life
Explore how Jubaili Bros generators are engineered for multiple lifecycles, and discover the cost-effective options for breathing new life into you...
Preventive Maintenance: The Small Investment with the Biggest Impact
Discover why preventive maintenance is the most critical—yet often overlooked—aspect of diesel generator ownership. Learn how Jubaili Bros' mainten...
The Jubaili Warranty: Direct Support When You Need It Most
Experience the unique Jubaili Bros approach to warranty service—where we stand directly behind our products with no third-party referrals. Discover...
The Power of Authenticity: Why Original Marapco Spare Parts Matter
Discover why using genuine Marapco spare parts is crucial for maintaining the performance, efficiency, and longevity of your diesel generator. Lear...