Power Factor Correction

The power factor of a load is defined as the ratio of active power to apparent power, i.e. kW divided by kVA and in mathematical terms is referred to as cos Ø. The closer cos Ø is to unity, the less reactive power is drawn from the supply. Power Factor (cos Ø) = Active Power (kW) / Apparent Power (kVA).

What is power factor correction?

Power factor correction (PFC) allows engineers to compensate for poor power factor and thereby optimise the transfer of useful power into electrical equipment. The process involves compensating for the lagging current by creating a leading current by connecting capacitors to the supply. PFC eliminates penalties on reactive energy, decreasing demand on kVA, and reduces power losses that are generated in the transformers and conductors.

For a full breakdown of our range of power factor correction units, see below - and contact our team if you have any questions!

Power Triangle

Please refer to the Cost Savings of a Power Factor Correction Unit to see how the above example works in with a practical situation.