Power Factor

The power factor may be calculated from the any of the following methods.

1. In the power factor meter reading directly.

2. From the trivector meter reading. (KW/KVA)

3. If KW meter only is available then PF = KW/(1.732*V*I)

Now, to get the better power factor in the system, then according to the available lagging kvar components, the capacitors are to selected.

Finally, the net KVAR is to be matched with other parameters like KW and KVA.

Sivaguru

Let us make it very clear

If you are not aware of what is power factor then

a) If you are industrial, please get someone who not only knows what is pf but can calculate the compensation. best will be to go to a reputed supplier of APFC and get his help.

b) If it is domestic, please do not waste your money. the compensation is not going to save you single $.

the compensation for lagging pf :

Q_CAP. = P (tan φ₁ - tan φ2) in var unit

where : Q_CAP = reactive power of capacitor (var)

P = actif power of load (watt)

tan = tangent

φ₂ = angle of new pf ( for example : cosφ₂ = 0.99 )

φ₁ = angle of old pf (for example : cosφ₁ = 0.80 )

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