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How do the different operation modes affect the design?

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Diesel generators with different operating modes may have different system designs. For example, a generator running in parallel with the mains will require synchronizing equipment, such as an advanced control module and a fully automatic circuit breaker.

Generators running on standby normally require a load switching system, such as a manual or automatic transfer switch, ensuring that the power from the generator is safely isolated from the Mains supply. Generators running in standby are often ESP rated, but other generator ISO ratings can also be used.

Generators running in island mode are often the most basic and can run with little additional equipment. Common extra include bulk fuel tanks to allow for long periods of unattended running. These generators are often continuous power rated or prime power rated, depending on the load requirements.

Ke Wong

Ke Wong

Hey, I’m Ke Wong joined WALT POWER in 2011. I spent a dozen years focused on generator set & load bank technology and solutions for the power & energy industry. WALT Power is a reliable & leading manufacturer & supplier in China, as a business director, I am so proud of our knowledge is more and more popular not only for engineers, and generator distributors but also for end-users. Hope you are enjoying our article, if any questions or comments welcome to send me sales at

Ke Wong

Hi, I’m the author of this post, and also the business director of WALT Power. I have been in this field for more than 17 years. If you want to know more about the generator set or services, please just feel free to contact me any time.

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