What is a diesel generator set (genset)?
The engine drives the alternator at a fixed speed so the output voltage and frequency stay steady. A control panel starts, stops and protects the set, and many sets add an automatic mains-failure panel that starts them when power is lost. Sets range from small portable units to large standby sets, and are often enclosed in a canopy for noise and weather protection.
Listed manufacturers
No diesel generator set (genset) manufacturers are listed yet
We add manufacturers product by product. If your company makes diesel generator set (genset), you can list it free and buyers reading this page will find you. Your details are reviewed before they appear.
List your companyDiesel Generator Set (Genset) or petrol or gas generator?
A diesel genset uses a robust, economical engine that suits long running and heavy loads, and diesel is easy to store. Petrol sets are lighter and cheaper for small, occasional use, and gas sets suit sites with a gas supply and stricter emission limits.
What to specify when you ask for a quote
- Rated power in kVA or kW, and whether it is prime or standby duty.
- The load: running load, and the starting current of the largest motors.
- Engine and alternator make and model, and the control panel features.
- Fuel consumption at 50, 75 and 100 percent load.
- Emission and noise compliance for your site, and the canopy supplied.
- Warranty, service network and availability of spares.
Where it is used
- ConstructionSite power where the mains is absent or unreliable.
- ElectricalStandby power for buildings and industry.
- AgriculturePower for pumps and farm equipment.
Frequently asked questions
How do I size a diesel generator set?
Add up the running load and check the starting current of the largest motors. Choose a rating that covers both with headroom, and ask the supplier to confirm it against your load list.
What is the difference between kVA and kW?
kVA is the apparent power the set can supply, and kW is the real power. kW is roughly kVA multiplied by the power factor of the load, which is commonly around 0.8, so ask the supplier to state both.
Does a genset need regular running?
A standby set should be run on load periodically so that the engine and batteries stay ready. Follow the maker's service schedule and keep fuel fresh.