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  • Convert kVA to kWh

    Is it possible to convert 20kVA into kWhs?

  • #2
    Re: Convert kVA to kWh

    Originally posted by Unregistered View Post
    Is it possible to convert 20kVA into kWhs?
    Not directly. You need to know two things.

    1) Power factor: In ac electrical systems, the current and voltage may not be exactly in phase. The product of voltage x current x cos(phase angle) is power. However, the portion of current that is not in phase still costs the electric company money to transmit. So they may base their rates on kVA, not on kW for commercial contracts, in essence, charging you as though the current was in-phase and represented power. (The user can install components that improve the power factor to minimize cost, and this is his incentive to do so.) When the power factor is one, kVA and kW are the same thing.

    2) Time: kWh is the product of power and time. It is 1 kW for an hour, use it for two hours and it will be 2 kWh

    It won't be a perfect estimate, but you can assume the power factor is 1, so 20 kVA = 20 kW and multiply by the hours run to get kWh.

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    • #3
      Re: Convert kVA to kWh

      Originally posted by Unregistered View Post
      Is it possible to convert 20kVA into kWhs?
      KWhr for 500 kva

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      • #4
        Re: Convert kVA to kWh

        Originally posted by Unregistered View Post
        Is it possible to convert 20kVA into kWhs?
        ok 20/.8=25 generaly

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        • #5
          Re: Convert kVA to kWh

          I have a breaker panel in which we have increased the power factor 20 - 25 % meaning the total amp load before installing our inductive load capacitor 96 total amps after installation the total load draw reduced to 72 total amp draw which indicates a 7.5 -10% reduction. How does that convert into KWH ?

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          • #6
            Re: Convert kVA to kWh

            Originally posted by calvin01 View Post
            I have a breaker panel in which we have increased the power factor 20 - 25 % meaning the total amp load before installing our inductive load capacitor 96 total amps after installation the total load draw reduced to 72 total amp draw which indicates a 7.5 -10% reduction. How does that convert into KWH ?
            If you have a two channel o'scope and a shunt you can check the phase angle between voltage and current. Don't forget your arc-flash gear.

            If your capacitors have brought the PF to 1.0 then the KWH = voltage x hours x 0.072 KA. For 240 V it'd be kwh = 17 x hours.
            Last edited by HerrWarum; 07-26-2011, 11:06 AM.

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            • #7
              Re: Convert 72kVA to kWh=

              72kvar witch kwh=

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              • #8
                Re: Convert 72kVA to kWh=

                Originally posted by Unregistered View Post
                72kvar witch kwh=
                See post #2.
                However, the "r" in kVAr means it is ONLY the reactive or out of phase component, therefore 0 kW. You need the in-phase component for power.

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                • #9
                  Re: Convert kVA to kWh

                  Originally posted by Unregistered View Post
                  Is it possible to convert 20kVA into kWhs?
                  14000kva to kilowatt

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                  • #10
                    Re: Convert kVA to kWh

                    Originally posted by Unregistered View Post
                    14000kva to kilowatt
                    If the voltage and current are in phase (power factor = 1), 14000 kVA is 14000 kW.
                    Otherwise, multiply by the power factor (which is less than one) or by the cosine of the phase angle.

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                    • #11
                      Re: Convert kVA to kWh

                      Is it possible to convert 60kVA into kWhs?

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                      • #12
                        Re: Convert kVA to kWh

                        Originally posted by ENIERMANUE View Post
                        Is it possible to convert 60kVA into kWhs?
                        No. 60 kVA is 60 kW or less depending on the phase angle between voltage and current, or more specifically the power factor which is the cosine of the phase angle. Once you reduce it to power in kW, you have to multiply by the hours of running time to get kWh, which is a unit of energy, not power.

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                        • #13
                          Re: Convert kVA to kWh

                          2.5kw=how many kva

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                          • #14
                            Re: Convert kVA to kWh

                            You can calculate kilowatt-hour from kilowatts and hours, but you can't convert kilowatt to kilowatt-hour, since kilowatt and kilowatt-hour units represent different quantities.

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                            • #15
                              Re: Convert kVA to kWh

                              Is it possible to convert 500kVA into kWhs?

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