![]() ![]() With power in an AC system there is always an inductive or reactive aspect to the circuit which causes the current to lead or lag the voltage. Assumed the PF is 0.5, and supposed the voltage is 110 V, we get these result: DC: I 1000 × 300 kW / 110 V 2727.27 A. Apparent Power is expressed in Volt Amps (VA). From our formulas follows that in order to get 300 kilowatts in amps we must know the voltage. Reactive Power is expressed in Reactive Volt Amps (VAR). I = 1000 × 0.44kW / ( √3 × 0.9 × 110V) = 2. The three phase calculator uses the power triangle in which Real Power is expressed in Watts (W). For any three-phase AC circuit, Current, I 1000 x kW / (3 x V L x P.F.) Where V L is the RMS value of the applied line voltage and P.F. Given that the power factor is 0.9, the power consumption is 0.44 kilowatts, and the voltage supply is 110V, calculate the phase current in amperes. For a three-phase AC circuit, if the line to line voltage is known, ampere can be calculated from kW using the following formula. In this case, the phase current I in amperes (A), is calculated by multiplying the real power P, in kilo-watts (kW) by 1000 and then dividing the result by the power factor multiplied by the square root of three times the line in line RMS V L- L voltage, in volts (V).Ĭurrent I in amperes (A) = 1000 multiplied by kW divided by the PF times the root of 3 times the voltsĪmps = 1000 × kilowatts / ( √3 × PF × volts) I = 1000 × 0.44kW / (0.7 × 110V) = 5.71A AC three phase kilowatts to amps calculation Work out the phase current, in amperes, given that the power factor in a circuit is 0.7, the power consumption is 0.44 kilowatts and the RMS voltage is 110V. In this case, the current I in amps (A) is calculated by multiplying the real power P, in kW by 1000 and then dividing the result by the power factor PF multiplied by the RMS voltage V, in volts (V).Ĭurrent I in amps= power P in kW times 1000/ Volts times the power factor ![]() I = 1000 × 0.44kW / 110V = 4A AC single phase kilowatts to amps calculation Given that the power consumption by an electrical appliance is 0.44 kilowatts and that the voltage across it terminals is 110V, calculate the current in amps through the appliance. AC three phase watts to amps calculation Calculation with line to line voltage The phase current I in amps (A) is equal to the power P in watts (W), divided by square root of 3 times the power factor PF times the line to line RMS voltage VL-L in volts (V): I(A) P(W) 3 × PF × VL-L(V) The power factor of resistive impedance load is equal to 1. To calculate the current I in amps (A), you should multiply the real power P, in kilowatts by 1000 and divide the result by the voltage V, in volts (V).Ĭurrent in amps (A) = kilowatts multiplied by 1000 Since amps and kilowatts are sued to measure the same quantity, it is possible to work out the amps given the volts and kilowatts. ![]() In both BS and IEC calculations, the KW calculation is based on a power factor of 0.8. How to convert electric power in kilowatts (kW) to electric current in amps (A) Eland Cables Cable Calculator can help you. ![]()
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