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dineshpandit80
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M.F in Electricity bill

04/21/2009 7:20 AM

i want to know one thing that in elecricity bill actual reading is multiply by a constant call M.F can some one explain about it
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PWSlack
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#1

Re: M.F in Electricity bill

04/21/2009 7:52 AM

The F stands for 'factor', presumably?

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not so smart
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#2

Re: M.F in Electricity bill

04/21/2009 7:52 AM

Aside from the obvious.........Perhaps multiplication factor?

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AussieBob
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#3

Re: M.F in Electricity bill

04/21/2009 8:15 AM

Meter Factor?

Maintenance Fee?

Suggest you ask the only one who really knows - your electricity supplier.
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msamad
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#4
In reply to #3

Re: M.F in Electricity bill

04/21/2009 11:34 AM

M.F is for Multiplying Factor

It is the factor that is used to multiply the reading of the energy meter to get the actual energy consumption. If the M.F is 10, and the energy meter reading difference (the difference is used because energy meter reading is cumulative) is 45 for a period. The actual energy used for the period is 45x10 = 450 KWH.

M.F value is written on the front dial of the energy meter. However, there may be different cases:

Case 1: The energy meter front dial doesn't have any M.F value or CT ratio and the meter is used without CT.

The M.F is 1 in this case, so the actual energy used for a period is equal to meter reading difference for the period.

Case 2: The energy meter front dial does have M.F value but no CT ratio: and the meter is used without CT.

The actual energy used for a period is equal to meter reading difference for the period multiplied by meter M.F.

Case 3: The energy meter front dial does have M.F value and CT ratio; and the meter is used with CT of same ratio.

The actual energy used for a period is equal to meter reading difference for the period multiplied by M.F.

Case 4: The energy meter front dial does have M.F value and CT ratio (example 100/5A); and the meter is used with CT of different ratio (example 200/5A).

In this case,

Actual M.F = Meter M.F x (200/100) = Meter M.F x 2.

The actual energy used for a period is equal to meter reading difference for the period multiplied by Actual M.F.

Case 5 (rare case but may happen): The energy meter front dial doesn't have any M.F value or CT ratio but the meter is used with a CT (say 20/5A).

In this case,

Actual M.F = CT ratio

So the actual energy used for a period is equal to meter reading difference for the period multiplied by CT Ratio.

There are more similar cases for PT ratio as well (but the logic is similar to CT ratio).

- MS

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Anonymous Poster
#5
In reply to #4

Re: M.F in Electricity bill

06/09/2010 11:53 PM

Case 5 would be very rare and has happened to me. The energy meter front dial doesnt have any M.F. value and CT ratio is mentioned but the meter is used with CT of different ratio. So what do u suggest now ????? what would be M.F.??? and what would be the KWH???
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