# Power Factor Correct Capacitor

**Factor from Table 1 below x kW kVAR of capacitors required.**

**Power factor correct capacitor**.
Power factor correction capacitors can be either fixed or automatically switched.
Facilities typically install these capacitors when inductive loads cause power factor problems.
It is common to place parallel power factor correction capacitor banks in a single location near the service meters.

The power available at the secondary. Fixed power factor correction capacitors are typically installed for individual motors or banks of motors. Power capacitors act as reactive current generators see Figure 6.

When apparent power kVA is greater than working power kW the utility must supply the excess reactive current plus the working current. Power Factor Correction using Capacitor Bank. Although power factor correction capacitors can considerably reduce the burden caused by an inductive load on the supply they do not affect the operation of the load.

Power factor correction is achieved by the addition of capacitors in parallel with the connected motor circuits and can be applied at the starter or applied at the switchboard or distribution panel. The var or KVAR rating of a capacitor shows how much reactive power the capacitor will supply. Therefore the above placement does not affect the currents flowing to the motors via individual branches.

These capacitors are on when the motor is on and off when the motor is off which avoids having capacitance on the system when the motor is not requiring reactive power. How to Correct Power Factor with a Capacitor If this load is an electric motor or most any other industrial AC load it will have a lagging inductive power factor which means that well have to correct for it with a capacitor of appropriate size wired in parallel. Power Factor Correction Capacitors- Sizing Calculator and Formulas CALCULATION OF POWER FACTOR CORRECTION CAPACITORS To calculate the required PFC capacitance we need to know the existing reactive power Q L VAR of your electrical system and choose desired PF.

Capacitor Sizing Chart Table for Power Factor Correction. These capacitors have leading power factor so that it will neutralize the lagging power factor of the load. This method features lower installation cost and provides compensation of the total PF of entire facility.