Diversity Factor

What does the book tells you?

That's nonsense. How can your load exceed the incoming supply by a factor of 2?

If diversity factor of a system is 2 then according to me .... , that's where you went wrong. Did you do any internet searches on your own how to calculate inrush current?
Take a look at these 2 links,Inrush current- Wikipedia and Inrush current Calculators

My God man!!!!!!!!!!!!!

Haven't you ever heard of Google?

About 7,800,000 results (0.40 seconds

Let me clear my question. If I say diversity factor is 0.5 of any system/equipment it means it will loaded 50% with respect to full load of the system for maxinum time after switch ON.Now I could not understand properly what will mean if diversity factor is 2 of any system.I searched google many time but didnt get satisfactory answere.

It means that you need 100% more power.

Or your system is designed wrong.

Or its simply wrong:

Diversity factor: The ratio of sum of the individual non-coincident maximum demands of various subdivisions of the system to the maximum demand of the complete system. The diversity factor is always less than or equal to 1. The (unofficial) term diversity, as distinguished from diversity factor refers to the percent of time available that a machine, piece of equipment, or facility has its maximum or nominal load or demand (i.e., a 70% diversity means that the device in question operates at its nominal or maximum load level 70% of the time that it is connected and turned on).
Diversity factor is commonly used for a number of mathematics related topics. One such instance is when completing a coordination study for a system. This diversity factor is used to estimate the load of a particular node in the system.
Diversity Factor = Sum of Individual Max. Demands
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Max. Demand on Power Station

https://in.answers.yahoo.com/question/index?qid=20080407215800AABrs44

Yes you are right but refer to below mentioned values why these diversity factors are greater than 1.What it means?

Diversity Factor in distribution Network

sensourabh,

I agree with you. Diversity denotes that the loads are non-coincidental at any given point of time and hence we can size the source to be at a lower power level than that required if all loads are considered appearing simultaneously. It is very useful and important input in designing the power systems especially for residential loads.

Diversity factor of 2 means all the loads, if were to appear simultaneously will require a power source that is twice the design rating. In other words, if the load diversity factor is 2, you can add up all such loads and size a source that is half the sum of the loads. Diversity factor information enables the designer to optimise the power system design.

The table you furnished is interesting. Where did you get the same from!

So its the diversity as seem the other way around. For me not the correct use of the word diversity factor.

The diversity factor in this article it is defined as:

Diversity Factor = Installed load. / Running load.

It is what we call "demand factor".

But here the demand factor is defined as:

Demand Factor = Maximum demand of a system / Total connected load on the system

See:

http://electrical-engineering-portal.com/demand-factor-diversity-factor-utilization-factor-load-factor

Another example

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.

Hi,

The diversity on a network is usually not calculated every time a new load is added (unless it is a substantial load.) For a residential load on a distribution transformer, the following type of diversity factors are used in conjunction with the ADMD (Average Diversity Maximum Demand). So while a typical house is fused at 63A single phase 230V, the ADMD for this type of site may be 5.58kW. This value would be determined by testing across a number of users. 5.58kW x the diversity (appropriate for the number of houses on a transformer) means you can work out the nominal spare load on a transformer. If the sum of the ADMD x number of sites is getting close to the transformer rating then the transformer may need to be upgraded. - .

Tried to insert a table, but I think it will not show

So a sample of in long hand

No houses Diversity factor

1 - 4

2 - 2.5

3 - 2

4 - 1.75

10 - 1.3

15 - 1.2

30 - 1.00

(after n=30, df=1)

For an urban area where there is LV support from other distribution transformers, then often these transformers will not be loaded more than 70%. This gives sufficient headroom to reconfigure the LV network in the event of maintenance or faults taking out a neighbouring transformer to give it "support."