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    CALCULATION OF RELEASED SYSTEM CAPACITY FOR POWER FACTOR IMPROVEMENT

    The following calculators compute the released system capacity for the addition of power capacitors or harmonic filters to your system. It also provides the required amount of reactive power compensation (kvar) to obtain a desired power factor. Choose the calculator based on the load data or information that you have. The calculators will compute the released KVA, the compensated KVA, required reactive power compensation (power capacitor kvar requirement), and other load information based on the load data provided.

    Calculator-1

    Known variables: KVA, Initial Power Factor, Corrected Power Factor

    Input Initial Total Power of Load (kVA):  
    Input Initial Power Factor:  
    Input Corrected Power Factor:   
    Real Power of Load (kW):  
    Required Reactive Power Compensation (KVAR):  
    Compensated Load kVA:  
    Compensated Load KVAR:  
    Released KVA:

    Calculator-2

    Known variables: KW, Initial Power Factor, Corrected Power Factor

    Input Real Power of Load (KW):  
    Input Load Initial Power Factor:  
    Input Compensated Power Factor:  
    Initial Load kVA - Before PF Correction:  
    Initial Load kvar, before PF Correction:  
    Required Reactive Power Compensation (KVAR):  
    Compensated Load KVA:  
    Compensated Load KVAR  
    Released KVA:

    Calculator-3

    Known variables: KW, KVAR, Corrected Power Factor

    Input Real Power of Load (KW):  
    Input Reactive Power of Load (KVAR)  
    Initial Load Power Factor:  
    Input Compensated Power Factor:  
    Initial Load kVA - Before PF Correction:  
    Required Reative Power Compensation (KVAR):  
    Compensated Load kVA:  
    Compensated Load KVAR  
    Released KVA:  

    Variables



















    Of Interest...

    The addition of power capacitors (or harmonic filters) to your system improves your power factor and reduces the amount of KVA (and current) required by your system source cables, transformers, and other source equipment to deliver real power to the load. A maximum reduction in KVA occurs at a power factor of 1.0. When load current and KVA is nearing the ratings of your equipment, consider improving your power factor rather than upsizing your equipment ratings.

    Real power (KW) does not change with power factor correction or the addition of power capacitors. At unity power factor, real power is equal to the total power (KVA) and reactive power (KVAR) is equal to zero.

    At a load power factor of 0.71, the real power of the load is equal to the reactive power (kvar) of the load.

    Total Power is also commonly called apparent power. Real power may sometimes be referred to as active power and reactive power is often named imaginary power.