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. P1=V*I1*cosφ1 Watts Amps Volts Calculator for Android devices, calculate and convert to or from electrical units single (1) phase and three (3) phase calculations. If we assume a power … 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. Ohm's Law Calculator. 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). H.P=Horsepower. V=P1/(I*cosφ1), Pt = total power of the circuit in watt (W) V = voltage in Volt (V) exemple : V1=230 V in 400 V three-phases circuit Manage Cookies. About Us. Watts to Amps Calculator. Calculate three-phase motor power consumption by multiplying amps by volts by the square root of three (W = AV (sqrt 3). The number of wattmeters required to measure power in a given … Terms of Use | The most important three-phase power equations relate power (P, in watts) to current (I, in amps), and depend on the voltage (V). Convert Ptotal from KVA into Kilowatts using the formula: P(KW) = P (KVA) x power factor. Phases - Select the number of phases in the circuit. I AC3Ø =Current/Ampere 3 phase. 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. Same thing for each phase… Three-phase AC volts to the watts calculation formula. Most AC power today is produced and distributed as three-phase power where three sinusoidal voltages are generated out of phase with each other. GENERATOR AMP RATINGS - THREE PHASE EXTENDED: 3 PHASE AMPERES - 80% POWER FACTOR* (Extended Table) kW Times 1000 divided by (Volts*1.73) *.80. I=P/(√3*U*cosφ) Refer to operational specifications to find the power factor associated with the system. 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. reset. 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) It is a unit of electric current equal to a flow of one coulomb per second. It can either be Direct Current (DC) or the Alternating Current (AC) single phase/ three phase. 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). 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. We have two sets of three-phase watt formula based on the line to line and line to neutral voltage. The current is simply the kVA divided by the voltage. 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). Some refinements are necessary for accuracy. Calculate the total 3-phase power, or "Ptotal," by adding the power of each phase together: Ptotal = P1 + P2 + P3. 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. 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. This website uses cookies to improve your experience, analyze traffic and display ads. Hp to Amps calculation formula, DC, AC, 3 phase, 2 phase, 1 phase: I DC =Direct current. All rights reserved 2015-2018. 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). Convert watts to kilowatts by dividing the number of watts by 1,000. 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 U=P/(√3*I*cosφ), Pt=P1+P2+P3 The two phase calculations are similar to 1 phase with an additional factor 2 in the denominators. time value below (number of hours and days the appliance is running) : P=U*I*cosφ I1=P1/(V*cosφ1) Ampere (amps or amperage) is an SI unit of electric current and is denoted by 'A'. What are volt-amps (VA) used for? Amperes - Enter the maximum current in amps that will flow through the circuit. 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. 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. I1, I2, I3 = current of phase 1, phase 2 and phase 3 in ampere (A) To calculate kVA, you need to enter the known values of voltage and the current into the respective fields. I AC1 Ø =Current/Ampere 1 phase. V L-N =Voltage line to neutral. 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. Using the above example: Ptotal = 39KVA + 33.6 KVA + 27.5 KVA = 100.1 KVA. Socialize with us: 1-800-928-5692 | English ... 3-Phase Delta (Balanced Load) 3-Phase Open Delta. * Use e for scientific notation. Ampere is the SI unit of electric current represented as 'A'. It has three text fields which help in determining the exact units you require after the conversion. 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. The first text field requires you to select the current type. V L-L =Voltage line to line. PF times the phase current I in amps (A), times the If you want to calculate energy associated to this active power, fill the Three phase kW to Amps. Watt is the unit of power, represented using the symbol 'W'. Back to basic, below are the simple Electric Power formulas for Single Phase AC Circuit, Three Phase AC Circuits and DC Circuits. If we need more power then we connect between two or three phases. The relationship between kVA and kW is the power factor (pf):Single phase system - this is the easiest to deal with. Close. E.g: 5e3, 4e-8, 1.45e12. You’ll see the three-phase voltage comes out to. V DC =Voltage direct current. P1, P2, P3 = power of phase 1, phase 2 and phase 3 in watt (W) It is a standard unit of power and energy. 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. E f =Efficiency. Privacy Policy | How to use the watts to amps calculator? 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) / … 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. I AC2Ø =Current/Ampere 2 phase. The power taken by a circuit (single or three phase) is measured in watts W (or kW). Typically, two options are offered: permanent magnet or auxiliary winding. You can easily find electric power in watts by using the following electric power formulas in electric circuits. Wattage of a three phase load is then calculated as watts = volts x amps x 1.73. 208V for a 120V supply 380V for a 220V supply 1 watt is defined as the energy consumption rate of one joule per second. Line to neutral voltage P(W) = 3 × PF × I(A) × VL-N (V) cos φ = cosinus phi (without unit), P=√3*U*I*cosφ In certain cases even more advanced options are available. It can either be direct current, denoted as (DC) or alternating current (AC). Watt is an SI unit of electric power and is denoted by 'W'. About | I=P/(U*cosφ) It is a conversion calculator which transforms the electric current in Amps to electrical energy in Watts. Given the kW and power factor the kVA can be easily worked out. 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. The product of the voltage and current is the apparent power and measured in VA (or kVA) . Watts to Amps calculator It is used to convert the electric power in watts (W) to the current in amps (A). 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. You can start by selecting the type of electric current. 1 Ampere is defined as the electrical current that flows with electric charge of one Coulomb per second. On line to Line voltage: The power in watt (W) equal to root 3 times of multiplication of volts (V), Amps (A) and pf. Let's see how this amperage calculator works in practice. P.F=Power factor. For motors, it is recommended to multiply the nameplate FLA by 1.25 for wire sizing. Amps to Watts Calculator. As an example, consider a loa… Line to line voltage: W applied = 3 1/2 U ll I cos Φ = 3 1/2 U ll I PF (1) where. U=P/(I*cosφ), P = power in watt (W) With single-phase AC power there is only one single sinusoidal voltage. ........................................................... © Power-Calculation.com. Enter the power in watts and the voltage in volts before clicking the ‘Calculate' button which performs the conversion. U = voltage in Volt (V) line to line RMS voltage VL-L in volts (V): The power P in watts (W) is equal to 3 times the RapidTables.com | 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 … Three-phase power calculator The three-phase power calculator calculates the apparent, active and reactive power for three-phase AC systems. Back to top. 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. amps = (kW × 1,000) ÷ (√3 × PF × volts) News; STEM; Terms and Conditions of Sale; Contact Us. Single-phase voltages are usually 115V or 120V, while three-phase voltages are typically 208V, 230V or 480V. Ohm's Law Calculator 3-Phase Delta / Wye Calculator. Real Power. 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. Ohms(R): Measured Circuit Resistance(Rc): Watts(W): calculate. How the electric utility industry generates and delivers power to its customers covering Basics, Delivery, Safety and Generation. A useful electrical power unit converter to calculate electrical units Watts, Amps, Volts single phase and kW, Amps, Volts and Power Factor three phase. Single-Phase AC Amps to Watts . 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) Knowing the RMS current helps you to correctly size the cables and circuit breakers, protections, breaker or fuses that supply power to your device. Learn More: Mobile Charger Power Consumption Calculation. 2. With this ... two-phase or three-phase. Electric current in amps (A) to Power generator, genset, diesel or gaz generator : calculation of consumption, energy and power. 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