Answer / amrinder

50 KW is 68 hp ,that means we have to connect three 22.5
KVAR capacitors in delta..?? Please Justify

Answer / vijay kumar

Actually motors are designed at 0.8pf.
50kw load means 50/0.8 kva i.e to 62.5 kva
we know that kvar=kva*sin(angle b/w V & I)
To take Power factor to Unity we need Kvar=62.5*0.6
=37.5 kvar

Answer / santoshvarma

Before connecting a capacitor bank we have to know for what
purpose we are connecting, if the load having power factor
of 0.8 and if you want to increase the power factor to 0.95,
for that you need to install capacitor bank. The rating of
the capacitor bank can be calculated as follows

Required KVAR rating of capacitor bank = KW(of
load)*(tan(cosinver 0.8)-tan(cosinve0.95)

By this way you will get the kvar rating of capacitor bank.

The capacitor is always connected in parallel to load bus.

Answer / biswajit sahoo

generally hp/3,connected in delta

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