Power Factor .
Power factor correction is the process of compensating for the lagging current by creating a leading current by connecting capacitors to the supply. A sufficient capacitance is connected so that the power factor is adjusted to be as close to unity as possible.
Why power factor correction is needed?
Power Factor Correction (PFC) lowers the current drawn by an electrical system. It does this by producing the reactive power (KVAr) locally, thereby reducing the current drawn from the mains. Ultimately, this means that less power is used so you save money and lower your carbon footprint.
What causes poor power factor?
Reactive power required by inductive loads increases the amount of apparent power (measured in kilovolt amps, kVA) in your distribution system. The increase in reactive and apparent power causes the power factor to decrease.
It's a power factor correction panel. Capacitors are switched into circuit to improve the power factor of an industrial set up. The power factor is usually lagging in industrial sites due to the use of inductive devices such as induction motors. By switching in capacitance across the main supply which have a leading power factor, some of the lagging element of the load can be cancelled out. This will reduce the current taken from the supply and thereby reduce any bills associated with this. It only works normally in industrial situations as domestic bills do not normally get penalised for poor power factor.
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