Three Critical Considerations to Right-Size a Commercial Generator Set

Posted by Jack Barry on Mon, Feb 03, 2014

When you’re considering purchasing a new or used diesel generator set, there are a number of technical specifications to keep in mind: step voltage dip, load capacity, step frequency dip and others.

But before you dive into the details of matching your operational needs to the specs of a potential new generator, it’s important to take pause and look at some of the more global considerations impacting your purchase.

1. The Impact of Altitude on Generator Set Selection
The higher above sea level that your site is located, the larger you need to go with your equipment due to pressure and other atmospheric variables. The same is true of temperature: as the average ambient temperature of your site rises, you’re equipment needs to scale up as well.

2. Configuring for Application Considerations
This is perhaps the most basic question and also one of the most critical questions to ask yourself when determining the proper size for a new diesel generator set: how will you be utilizing the equipment? Whether the generator set is designed to be as back-up source vs. a primary power source will impact size and other key equipment specs.

3. Seeking Out Expert Sizing Resources
While you may initially embark on vetting potential generators through your own in-house resources, at some point in the process you’ll want to leverage outside help. This includes connecting with representatives from the manufacturers you’re considering. Additionally, once you hone in on your equipment selection, the detailed analysis of the sizing will most likely be completed a proprietary software solution

Properly sizing new generator sets can be a complex process with many moving parts and pieces. But by beginning the vetting process by looking at some of the more global conditions and variables impacting your purchase before going on to reconciling the highly technical specs, you’ll be able to make the quickest, and most likely the most prudent decision.

For more useful buying information, download our free buying guide:

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