the powerfactor actuator are available in market. Use them with ADC to switch required capacitors. I hope you can work out with this
improvement of power factor
It depends what it's for. If it's for power-factor improvement, then it is normally connected in parallel with the load.
If you are talking about a capacitor bank used for power-factor improvement, then it is rated in reactive volt amperes (var). Otherwise, it is rated in farads (F).
It depends on how the capacitor is connected and whether the supply voltage is a.c. or d.c. Assuming you are talking about a power-factor improvement capacitor (connected in parallel with an inductive load, supplied with a.c.), then the supply current will reduce.
It depends on the purpose where you are using the Capacitor.If you are using in power systems then it may be used for improvement of Power factor.Which is the important factor in industry.
Power factor characteristic in a capacitor is a measurement of how efficiently a capacitor uses electrical energy.
Switching factor
In a circut we use capacitor in series for improving power factor
Your question should read, "Do capacitive devices actually save energy?" Power is simply the rate at which you use energy, so you cannot 'save' power. And the answer to your question is no.Capacitor banks are used to improve the power factor of industrial loads. Power-factor improvement acts to reduce the load current, thus reducing the amount of copper required in the supply system conductors, transformers, etc. Power-factor improvement, on the other hand, has no effect upon the operation of the load. The energy used by the load after power-factor improvement is exactly the same as it was before.Power-factor improvement only really applies to industrial loads, because utility companies will financially penalise industrial consumers who allow their power factor to fall below an agreed figure. Power-factor improvement will have absolutely no effect whatsoever on residential loads, so companies trying to sell you 'capacitor devices' that promise to 'save you money' are scam merchants!
For power factor improvement so that the KVA demand is reduced.
A power factor capacitor is a power capacitor. I'm not sure what you mean by "regular". There are different types, made from different materials that have better/worse characteristics than others depending on the application. You could use any high power capacitor for power factor correction, as long as it is sized correctly for the load and voltage.
It depends on how the capacitor is connected and whether the supply voltage is a.c. or d.c. Assuming you are talking about a power-factor improvement capacitor (connected in parallel with an inductive load, supplied with a.c.), then the supply current will reduce.