How the electric utility industry generates and delivers power to its customers covering Basics, Delivery, Safety and Generation.         Same thing for each phase… P1, P2, P3 = power of phase 1, phase 2 and phase 3 in watt (W) Terms of Use | Back to basic, below are the simple Electric Power formulas for Single Phase AC Circuit, Three Phase AC Circuits and DC Circuits. The current is simply the kVA divided by the voltage. Manage Cookies. I AC2Ø =Current/Ampere 2 phase. The number of wattmeters required to measure power in a given …         P1=V*I1*cosφ1 V L-N =Voltage line to neutral. This chart approximates the amperage of a generator based on the size of the generator and the load on the generator at 100 percent of capacity. The real power P in watts (W) is equal to square root of 3, multiplied by the power factor PF, multiplied by the phase current I in amps (A), multiplied by the line to line RMS voltage VL-L in volts (V). There is also a “power factor” (pf) in the equation that takes account for the difference between the real power (which performs useful work) and the apparent power (which is supplied to the circuit). P.F=Power factor. Mathematical equation: Two-phase Amps = [HP * 746] / [E * %age Efficiency * PF * 2] Example: Determine the current flowing through a two-phase, 0.5 HP, 220 volt motor having an efficiency rating of 90% and a power factor of 0.92. Now, if you look at the “1,000 4 1.732V” portion of this equation, you can see that by inserting the respective 3-phase voltage for “V” and multiplying it by 1.732, you can then divide that quantity into the “1,000” to get a specific number (or constant) you can use to multiply “kW” to get the current draw of that 3-phase load at the respective 3-phase voltage. You can start by selecting the type of electric current. Back to top. Pt = total power of the circuit in watt (W) P1, P2, P3 = power of phase 1, phase 2 and phase 3 in watt (W) V = voltage in Volt (V) exemple : V1=230 V in 400 V three-phases circuit I1, I2, I3 = current of phase 1, phase 2 and phase 3 in ampere (A) Cos φ1, Cos φ2 , Cos φ3 = cosinus phi of each phase (without unit) electric power in watts (W) calculator. If more than one wattmeter is connected for the measurement, the process becomes convenient and easy to work with instead of taking various readings with one wattmeter.         I1=P1/(V*cosφ1) time value below (number of hours and days the appliance is running) : P=U*I*cosφ If you want to calculate energy associated to this active power, fill the It is a standard unit of power and energy. It can either be Direct Current (DC) or the Alternating Current (AC) single phase/ three phase. We have two sets of three-phase watt formula based on the line to line and line to neutral voltage. Typically, two options are offered: permanent magnet or auxiliary winding. 1 watt is defined as the energy consumption rate of one joule per second. For three-phase AC circuits where the line to line voltage is known, the formula to convert watts to amps is: I(A) = P (W) V L-L (V) × PF × √3 The current I in amps is equal to the power P in watts divided by the line to line voltage V in volts multiplied by the power factor PF multiplied by the square root of 3. Both provide the generator with three times their nominal current to cover inrush peaks from the electrical motor, for a minimum duration of ten seconds, via a residuary excitation current. With this ... two-phase or three-phase. H.P=Horsepower. Refer to operational specifications to find the power factor associated with the system. U = voltage in Volt (V) What are volt-amps (VA) used for? Wattage of a three phase load is then calculated as watts = volts x amps x 1.73. I1, I2, I3 = current of phase 1, phase 2 and phase 3 in ampere (A) Convert Ptotal from KVA into Kilowatts using the formula: P(KW) = P (KVA) x power factor. Close. Watts to Amps Calculator. Calculate the total 3-phase power, or "Ptotal," by adding the power of each phase together: Ptotal = P1 + P2 + P3. Single-Phase AC Amps to Watts . 208V for a 120V supply 380V for a 220V supply It is a unit of electric current equal to a flow of one coulomb per second. Calculate three phase power from voltage, current and power factor - Three Phase Voltage (V): Current (A): Power Factor: Calculate current from three phase apparent power and/or active power - Apparent power (kVA): Active power (kW): × Three Phase Calculation. Three-phase AC volts to the watts calculation formula.         I=P/(U*cosφ) It has three text fields which help in determining the exact units you require after the conversion. You’ll see the three-phase voltage comes out to. Watt is an SI unit of electric power and is denoted by 'W'. PF times the phase current I in amps (A), times the Some refinements are necessary for accuracy. With single-phase AC power there is only one single sinusoidal voltage. Watt is the unit of power, represented using the symbol 'W'. How to use the watts to amps calculator? Given the kW and power factor the kVA can be easily worked out. In certain cases even more advanced options are available. power factor PF times the phase current I in amps (A), times the RMS voltage V in volts (V): The power P in watts (W) is equal to square root of 3 times the power factor Converting Watts to Amps (AC three phase system) Line to Line Voltage: Calculate the phase current I in amps (A) by dividing the power P in watts (W) by the square root of 3 times the power factor PF times the line to line RMS voltage VL-L in volts (V): (The power factor is the ratio of the real power flowing to the load to the apparent power in the circuit. line to line RMS voltage VL-L in volts (V): The power P in watts (W) is equal to 3 times the On line to Line voltage: The power in watt (W) equal to root 3 times of multiplication of volts (V), Amps (A) and pf. Socialize with us: 1-800-928-5692 | English ... 3-Phase Delta (Balanced Load) 3-Phase Open Delta. Watts to Amps calculator It is used to convert the electric power in watts (W) to the current in amps (A). Ampere is the SI unit of electric current represented as 'A'. This website uses cookies to improve your experience, analyze traffic and display ads. Watts Amps Volts Calculator for Android devices, calculate and convert to or from electrical units single (1) phase and three (3) phase calculations. 2. Using the above example: Ptotal = 39KVA + 33.6 KVA + 27.5 KVA = 100.1 KVA. A useful electrical power unit converter to calculate electrical units Watts, Amps, Volts single phase and kW, Amps, Volts and Power Factor three phase. 1 Ampere is defined as the electrical current that flows with electric charge of one Coulomb per second. The formula to find amps for a three-phase AC circuit is a little different from the formula for a single phase circuit: amps = (kW × 1,000) ÷ (√3 × PF × volts) For example, find the current of a 25kW three-phase generator with an efficiency of 80% at 240 volts. … Privacy Policy | reset. If we need more power then we connect between two or three phases. For measuring the power in a 3 phase or Poly Phase system, more than one wattmeter is required, or more than one readings are made by one wattmeter. Ohm's Law Calculator 3-Phase Delta / Wye Calculator. Amps to Watts Calculator.         U=P/(I*cosφ), P = power in watt (W) Ohm's Law Calculator. Line to line voltage: W applied = 3 1/2 U ll I cos Φ = 3 1/2 U ll I PF (1) where. Single & Three Phase Line kVA calculator is an online tool used in electrical engineering to measure the unknown quantity by two known quantities applied to the below formulas for single phase and three phase connection. About | It can either be direct current, denoted as (DC) or alternating current (AC). © AC three phase kilowatts to amps calculation Calculation with line to line voltage The phase current I in amps (A) is equal to 1000 times the power P in kilowatts (kW), 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) = 1000 × P(kW) / … Enter the power in watts and the voltage in volts before clicking the ‘Calculate' button which performs the conversion. Line to neutral voltage P(W) = 3 × PF × I(A) × VL-N (V) Single-phase voltages are usually 115V or 120V, while three-phase voltages are typically 208V, 230V or 480V. * Use e for scientific notation. You can easily find electric power in watts by using the following electric power formulas in electric circuits. Three phase kW to Amps. I AC1 Ø =Current/Ampere 1 phase. Imagine that we want to know the power of a current with 15 amps and a three-phase alternating current, line-to-neutral voltage, with the amplitude of 100 volts (in other words, what is the result of conversion 15 amps to watts for VLN equal 100 volts). Ohms(R): Measured Circuit Resistance(Rc): Watts(W): calculate. V = voltage in Volt (V) exemple : V1=230 V in 400 V three-phases circuit Quick VA to Watts calculator with step by step formula and conversion explanation. getcalc.com's AC Power Calculator is an online electrical engineering tool to calculate the power consumed by the load connected in single phase, three phase or two phase … Amperes - Enter the maximum current in amps that will flow through the circuit. I = current in ampere (A) Cos φ1, Cos φ2 , Cos φ3 = cosinus phi of each phase (without unit), Hydropower, hydroelectricity online calculation, Power, voltage, current calculator, 1-phase or 3 phase.         V=P1/(I*cosφ1), Pt = total power of the circuit in watt (W) To calculate kVA, you need to enter the known values of voltage and the current into the respective fields. Electric current in amps (A) to As an example, consider a loa… Convert watts to kilowatts by dividing the number of watts by 1,000. Real Power. GENERATOR AMP RATINGS - THREE PHASE EXTENDED: 3 PHASE AMPERES - 80% POWER FACTOR* (Extended Table) kW Times 1000 divided by (Volts*1.73) *.80. The power taken by a circuit (single or three phase) is measured in watts W (or kW). About Us.         U=P/(√3*I*cosφ), Pt=P1+P2+P3 Hp to Amps calculation formula, DC, AC, 3 phase, 2 phase, 1 phase: I DC =Direct current. amps = (kW × 1,000) ÷ (√3 × PF × volts) The power P in watts (W) is equal to the current I in amps (A), times the voltage V in volts (V): The power P in watts (W) is equal to the If you want to know the power consumption in watts for an appliance with a current of 3 amps and a voltage of 110, your calculation would be: Amps ⨯ volts = watts 3 ⨯ 110 = 330 watts. Air conditioning efficiency : EER, SEER, and COP conversion. Learn More: Mobile Charger Power Consumption Calculation. cos φ = cosinus phi (without unit), P=√3*U*I*cosφ We calculate the supplied voltage by squaring each of the instantaneous voltages per phase, then add all three values together per segment and then take the square root of that number. The relationship between kVA and kW is the power factor (pf):Single phase system - this is the easiest to deal with. Three phase kW to Amps calculations involve a ration of 1000 times kW to the power factor times voltage and an additional factor 1.73 that represents an equivalent of √3 and is added because the circuit is three phase in nature. For motors, it is recommended to multiply the nameplate FLA by 1.25 for wire sizing. The first text field requires you to select the current type. V L-L =Voltage line to line. The product of the voltage and current is the apparent power and measured in VA (or kVA) . All rights reserved 2015-2018. News; STEM; Terms and Conditions of Sale; Contact Us. If we assume a power … Knowing the RMS current helps you to correctly size the cables and circuit breakers, protections, breaker or fuses that supply power to your device. Calculate three-phase motor power consumption by multiplying amps by volts by the square root of three (W = AV (sqrt 3). I AC3Ø =Current/Ampere 3 phase. Three-phase power calculator The three-phase power calculator calculates the apparent, active and reactive power for three-phase AC systems. The most important three-phase power equations relate power (P, in watts) to current (I, in amps), and depend on the voltage (V). Power generator, genset, diesel or gaz generator : calculation of consumption, energy and power. Phases - Select the number of phases in the circuit. RapidTables.com | The two phase calculations are similar to 1 phase with an additional factor 2 in the denominators. It is a conversion calculator which transforms the electric current in Amps to electrical energy in Watts. Most AC power today is produced and distributed as three-phase power where three sinusoidal voltages are generated out of phase with each other. Let's see how this amperage calculator works in practice. If the voltage and current are not identical in all three phases, you must average the volts and amps of the three phases, so the formula becomes watts = average volts x average amps x 1.73.         I=P/(√3*U*cosφ) For example, if the motor is drawing 30 amps at 250 volts, you have 30 x 250 x sqrt 3 (about 1.73) = 12,975 watts). power factor PF times the phase current I in amps (A), times the line to neutral RMS voltage VL-N in volts (V): Do not use typical power factor values for accurate calculations. AC three phase amps to watts calculation Calculation with line to line voltage The power P in watts (W) is equal to square root of 3 times the power factor PF times the phase current I in amps (A), times the line to line RMS voltage VL-L in volts (V): P(W) = √3 × PF × I(A) × VL-L (V) E.g: 5e3, 4e-8, 1.45e12. E f =Efficiency. ........................................................... © Power-Calculation.com. Ampere (amps or amperage) is an SI unit of electric current and is denoted by 'A'. V DC =Voltage direct current.