The energy metering devices record active and reactive energy consumption.
The electricity suppliers generally show the term tan or cos on their bill. Unlike the cos , it is easy to see that the value of tan should be as small as possible in order to have the least reactive energy consumption. θ θ θ θ A good power factor is cos high (close to 1) or tan low (close to 0). θ θ • Savings on electrical equipment, a decrease of the power demand. • An increase in available power of the supply transformer. • Lower voltage drops and Watt losses in cables. • Savings on electricity bills by eliminating reactive energy consumption. • The reduction of subscribed power KVA (if available) Reactive power compensation gives you the following benefits: To compensate for reactive power, it is necessary to provide reactive power by installing compensation equipments instead of taking it from the main distribution. If the value of reactive power to compensate it is small compared to the total apparent power of all the loads (Qc/St15%), it is advisable to choose an automatic compensation equipment