Answer / m raviteja

capacitor is static device which can store the energy in
the form of eletric field, Q=CV. We can switch on and off
the capacitor bank depends on the load. Normally capacitors
in the industries are dependent on power factor.
from power equation p=1.732vicosphi.

Answer / guest

normally the capacitors are switched on to bring the power factor nearer to unity i.e 1.
if load(kw)is almost equal to generator capacity (kva)or if power factor is between 0.9 to 1 we wont Switch on the capacitors.
capacitors are rated in kvar(kilo volt amp reactive )
apparent power=kvar=sqrt(3)*V*I*sin phi

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