Answer / abdul

It depends on the how much the power factor has to be improved
simple calculation would be
Kvar = KW [tan (cos inverse (old pf) - tan (cos inverse (new required pf)

Answer / girish

KVAR=KWX0.541(Power factor improvement at 0.98)

KW=20
KVAR=20X0.541

10KVAR

2.5KVAR 4 Steps

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