how to calculate capacitor bank value to maintain unity power factor plz xplai

how to calculate capacitor bank value to maintain unity
power factor plz xplain with some suitable xample?

Question Posted / er. ankush miglani 0971815107

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how to calculate capacitor bank value to maintain unity power factor plz xplain with some suitable..

Answer / er. ankush miglani 9718151073

KVAR= KW(TAN(COS(-1)#e)- TAN(COS(-1)#d) )

#e= EXISTING P.F.
#d= DESIRED P.F.

Is This Answer Correct ?

35 Yes

3 No

how to calculate capacitor bank value to maintain unity power factor plz xplain with some suitable..

Answer / shalini.b

capacitor bank value is calculated in KVAR
From Power Triangle,
KVAR = Sin(phi) * KVA

Desired Power factor = 0.96 (say)
cos(phi)=0.96
phi = cos(inv)0.96
phi= 36.86
Sin(phi)= 0.28

If the transformer rating is 1250 KVA (say)
KVAR = 0.28*1250
= 350

Is This Answer Correct ?

22 Yes

8 No

how to calculate capacitor bank value to maintain unity power factor plz xplain with some suitable..

Answer / maen drawish

The proper calculation for cap. bank it depends on the
desired & initial/ existing cos-phi.

Is This Answer Correct ?

3 Yes

1 No

how to calculate capacitor bank value to maintain unity power factor plz xplain with some suitable..

Answer / skumar

I don't know the correct formula. But in practical we
applying 30% of our full load(i.e transformer capacity).

Is This Answer Correct ?

4 Yes

7 No

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