# Demand Factor And Diversity Factor Pdf

By Joseph B.
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11.04.2021 at 14:49

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Published: 11.04.2021

There are two terms that seem to confuse designers. Diversity factor is the ratio of the sum of the individual maximum demands of the various subdivisions of a system or part of a system to the maximum demand of the whole system or part of the system under consideration. Diversity is usually more than one. Demand factor is the ratio of the sum of the maximum demand of a system or part of a system to the total connected load on the system or part of the system under consideration. Demand factor is always less than one.

## Estimation of actual maximum kVA demand

General rules of electrical installation design. All individual loads are not necessarily operating at full rated nominal power nor necessarily at the same time. Factors ku and ks allow the determination of the maximum power and apparent-power demands actually required to dimension the installation. In normal operating conditions the power consumption of a load is sometimes less than that indicated as its nominal power rating, a fairly common occurrence that justifies the application of an utilization factor ku in the estimation of realistic values. This factor must be applied to each individual load, with particular attention to electric motors, which are very rarely operated at full load. For socket-outlet circuits, the factors depend entirely on the type of appliances being supplied from the sockets concerned.

## Demand factor

Definition: Diversity factor is defined as the ratio of the sum of the maximum demands of the various part of a system to the coincident maximum demand of the whole system. The maximum demands of the individual consumers of a group do not occur simultaneously. Thus, there is a diversity in the occurrence of the load. Due to this diverse nature of the load, full load power supply to all the consumers at the same time is not required. F D — diversity factor D i — maximum demand of the load I, irrespective of the time of occurrence.

In telecommunication , electronics and the electrical power industry , the term demand factor is used to refer to the fractional amount of some quantity being used relative to the maximum amount that could be used by the same system. The demand factor is always less than or equal to one. As the amount of demand is a time dependent quantity so is the demand factor. The demand factor is often implicitly averaged over time when the time period of demand is understood by the context.

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### Diversity Factor

October 31, 96 Comments. Text Book of Design of Elect. Installation- Jain. Saudi Electricity Company Distribution Standard.

Premium Membership. Learn from experienced power engineers. Originally published at Electrical Notes — Articles. It is great work thank you. If I had refrigerating firm house how could I calculate the factors that affect the power? Dear sir , I highly appreciate your very rich technical article.

Use a diversity factor of Solution: Calculating demand for feeder-circuits. • kVA x 90% = kVA. • kVA x

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