Multi-Generator Control System

Optimising Engine Operation

GenTrans is an automatic changeover control system that is used to switch between two different sized generators, depending on the power requirement. Many off grid business sites require a high level of power for only 30% of the working day or night. For the rest of the time, considerably less power is required to maintain operations. Using a generator large enough to provide enough power for the 30% high load period is an expensive option, as during the other 70% low load period, the generator would have to operate inefficiently using large quantities of fuel. This is where GenTrans steps forward. GenTrans allows you to connect two different sized generators, one large and one small, and our system automatically determines which generator to run to provide the required power at that time.

GenTrans Application Example – The Milking Parlor

A milking parlor may need 100kVA of power to operate during milking times – let’s say 3 hours in the morning and 3 hours again in the afternoon. The rest of the time (18 hours), the electrical load consists of controls, heaters, chillers, agitators, lights and pumps with a total load of less than 20kVA. Running a 100kVA generator for all or most of the 24 hour period is a very costly option. Excess fuel will be used unnecessarily, and the continual running of the large generator would attract high maintenance costs.

GenTrans can be installed in this scenario in conjunction with two different sized generators. The system automatically senses the change in loads, and will switch over to whichever generator is more suitable for the required load. This helps to reduce the running costs, as the smaller generator will run unless the required load exceeds its capacity. So in this example, the larger generator will only be switched on for 6 hours per 24hrs.

Fuel Savings & Engine Preservation

The fuel used to generate each kilowatt of power is relatively constant between 100% and 60% loads. As the load decreases below 60%, the fuel required to produce each kilowatt increases disproportionately. Also, when a generator runs consistently at low load, the fuel does not burn properly. This increases pollution, producing soot both internally and externally. The result is both increased fuel consumption and increased maintenance costs.


  • Fitted with a clock/calendar so that either generator could be started at predetermined times of day.
  • Saves on fuel costs, pollution and maintenance costs.
  • Very rugged and reliable, it is designed for use in industrial conditions. 

Technical Specification

For further information, see the Multi-Generator Control System dowload (Displayed on the right)

Multi-Generator Control System

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Multi-Generator Control System Product Information
Multi-Generator Control System Case Studies
If you require more information please do not hesitate to contact us on +44 (0)1507 600688