Active, Reactive & Apparent Power

Active Power – Active power is the power which is actually utilized by the load. It is denoted by Watts or KW.

Reactive Power – Reactive power is the power which is not utilized (or wastage) by the load but is added in the power consumption by the load. It is denoted by VAr or KVAR.

Apparent Power – Apparent power is the power which is given to the load that includes both active & reactive power. It is denoted byVA or KVA.

There is a relation between active, reactive & apparent power which is given below –

Note – For leading current, the power triangle become reversed. This characteristic of current helps to improve the power factor.When a leading power factor device is connected in parallel with load, the lagging power factor partially neutralized, thus power factor is improved.