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Electric Power Applications, Engine and Generator Sizing (photo credit: cumminspowerblog.com)
Electric Power Applications, Engine and Generator Sizing (photo credit: cumminspowerblog.com)

Load Steps

Load steps refer to the amount of load that will be placed on a genset at one time. A genset may accept load in one load step, or may spread it out over several load steps. The customer can identify the needs of the environment and then a proper method of starting can be applied. BMEP load step analysis is one system for developing a starting method.

Most loads do not draw power in a steady-state fashion; therefore, it is important to know the operating sequence and what else is running when loads are connected.

Prioritization

Prioritization is the process by which the customer identifies what electrical loads are needed and in what priority. The highest priority loads would be in the first step; even if all the gensets are not ready for load. The first genset ready to accept the load would take the first priority loads.

The next step would go to the next highest prioritized load. This process will repeat until all loads are applied. Smaller load steps equate to smaller transients, which result in a smoother transition.

For example, a medical center might prioritize lifesaving equipment as their number one need. That equipment (or special outlets for that equipment) would be the first supplied with electricity from the first available genset. Lights may be identified as the second most important need and handled by the second load step.

Title:Electric Power Applications, Engine and Generator Sizing – Caterpillar
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Electric Power Applications, Engine and Generator Sizing
Electric Power Applications, Engine and Generator Sizing

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8 Comments


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  3. Ahmad Al-Sheikh
    Jul 07, 2013

    Thank you

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