Cummins power generators. Reliable power and performance.

Operations within every application and industry rely on Cummins generators. You can depend on Cummins to provide robust, flexible, and fully integrated power on demand or full-time, in a global economy where the power is always on, 24/7.


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Cummins Centum Series™ Generators

A new platform to meet the growing needs for right-sized power and reduced emissions: Centum™ Series generators.

Developed in direct response to the needs and requests of specifiers, contractors, owners and end users, the Centum Series is designed to address the challenges you face today, while looking ahead to those you anticipate in the future. 

Centum Series generators represent a significant shift in the Cummins approach to power system design, offering next-level flexibility, efficiency and sustainability. This is more than the launch of a new product line; this is a long-term commitment to the next generation of power, our customers, the industry and our planet.

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The next generation of power generators

Reliable power for your work, home, and life. Find your use case among everywhere reliable power is needed, from hospitals and data centers to drilling and mining operations.

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Our power system products include diesel and gas-powered generator sets ranging from 15 – 3750 kVA, alternators, diesel engines ranging from 49 – 5,500 hp, generator-drive engines, battery storage systems and integrated power systems that combine generator sets, paralleling controls and switchgear technologies, all connected to our industry-leading digital solutions for complete power system control.

All aspects of generator set design, manufacturing and service have been brought together in one company. All the major components – the engine, alternator, control systems and containers – are manufactured and built by Cummins. This integrated approach means each element of a generator set is matched to work in harmony from the start.

Regardless of the power system architecture required to meet your market or application needs Cummins provides a superior combination of solution design expertise, integrated equipment and communication software as well as ongoing operation and generator maintenance services to help you maintain a resilient operation at your site.


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Global reach. Local support.

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The knowledge of Cummins experts is not only evident through superior product design but also through their collaboration from start to finish of implementation as well as the ongoing service and support provided to customers.

With 500 company-owned and independent distributor facilities, 9,000+ dealer locations in 190 countries and 6 continents, we offer global capabilities and local support wherever and whenever you need us.

What is a power generator?

Power generators are basically small power plants. They allow their owners to generate electricity on site, as a substitute or complement to electricity from the electric grid. Power generators and large thermal power plants operate on the same principle: both burn fuel to create motion, or mechanical energy, and convert it into electrical energy.

Generators have two main components: an internal combustion engine and an alternator.

How does a power generator work?

Like an internal combustion engine of a car, a generator’s engine needs fuel to operate. Diesel, natural gas, propane, gasoline and biofuels are common options.

The combustion of the fuel is used to create a rotational movement in a crankshaft in the following way: Air is taken into a cylinder through an intake valve as the piston lowers. The piston then travels upward, causing the air to compress in the cylinder. When the air is compressed and reaches a certain temperature due to that compression, fuel is injected into the cylinder and ignites. The combustion, a small explosion, pushes the piston back down. The piston then returns to the top of the cylinder, pushing the gases from the combustion out the exhaust valve. The pistons are attached to a crankshaft, so as the pistons move up and down, it makes the crankshaft turn.

In a vehicle, this motion and energy would be used to propel the vehicle. In a generator, it is used for electricity generation.

How does a generator produce electricity?

The rotational motion produced by the engine extends into the second main component, the alternator. The alternator converts one form of energy, rotational kinetic energy, into electricity by using the properties of electromagnetic induction, the physical phenomenon by which variable magnetic fields create electrical currents.

The alternator has two parts—a stator and a rotor. The stator is a housing made up of many copper windings, and as the rotor spins inside the stator, its magnetic field rotates as well. The rotating magnetic field causes the electrons to flow in the stator, and thus a current of electricity is produced.

What are the components of a power generator?

As well as the generator and alternator, a power generator contains other components to ensure its correct operation. A fuel system ensures that the generator’s engine receives a steady supply of fuel. In smaller generators, the fuel system can be as simple as a fuel tank and a fuel filter.

The generator also needs to supply electricity at the correct voltage, so a voltage regulator is included to ensure the right voltage is achieved and maintained.

Parts of the generator get hot during operation, so to prevent overheating, a cooling system is needed. Smaller generators tend to be air-cooled; larger generators need to be water-cooled. Then there is the exhaust system, which removes hot combustion gasses. Catalytic converters, dust filters or scrubbers can be added to clean up the exhaust.

In larger generators used in cogeneration applications, the exhaust gasses can be used to heat water, for example, as part of a district heating scheme. This means that the fuel energy is converted to both electrical and useful heat energy, optimizing the efficiency of the machine.

In addition, there is usually an oil system for lubrication, a battery for ignition, a charging mechanism for the battery, a control panel for monitoring the different gauges and parameters of the machine, and the frame in which all the machine’s components are housed.

Case Study Actions

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