The power factor stands at zero (0) when all power is reactive power. The power factor value ranges from zero to one, depending on the resistive and real load. Real power means electrical power used by the devices, while apparent power (reactive power) means electricity supplied to the AC circuit. It refers to the ratio between the real and apparent power dissipated by an AC circuit to the electrically powered product. We've mentioned the power factor (PF) several times in the formulas. Amps from Kilowatts (line-to-neutral voltage)įor a 3-phase power supply calculation, you need to multiply 1000 by the power (kW), divided by three times the power factor times line-to-neutral RMS voltage (V). The phase current (A) equals 1000 times the kilowatts (kW), divided by the square root of three multiplied by the power factor (PF), multiplied by the line-to-line RMS voltage (V). Amps from Kilowatts (line-to-line voltage) The only difference is that the square root of three (√3) is replaced by a number three (3), and line-to-line RMS is replaced by line-to-neutral RMS voltage in the equation. You can calculate 3-phase power from amps to kW with line-to-neutral voltage just as you would with line-to-line voltage. Kilowatts from Amps (line-to-neutral voltage) The power (kW) equals the square root of three (√3) multiplied by the power factor (PF) times the current (Amps or A), times the line-to-line RMS voltage (V) divided by 1000. Kilowatts from Amps (line-to-line voltage) Keep in mind that the 3-phase power formula will be different for line-to-line and neutral voltages. Here are the equations you can use for three-phase power calculation. How do you transfer amps to kilowatts in a three-phase circuit (and vice-versa)? The two most common configurations are delta (used only three wires) and wey (has a fourth neutral wire).Ī three-phase electric power supply is typically found in commercial and industrial facilities with large motors, manufacturing equipment, capacity air conditioners, and other heavy-load applications. It also provides an overall greater density, thus optimizing energy consumption.įor more accurate power calculation, a formula for 3-phase applications must account the type of power configuration. Unlike single-phase power supply, 3-phase power needs less aluminum or copper, has a greater conductor efficiency, and sustains large power loads. Three-phase electric power is the common type of AC power generation and distribution, widely used for loads larger than 1000 watts. The A stands for phase current, which equals kW (power) multiplied by 1000, then divided by the power factor (PF) multiplied by the RMS voltage (V). In this formula, the amount of power (in kW) is equal to the power factor of the load (PF) multiplied by the phase current measured in Amps (A), times the RMS voltage (V), and divided by 1000. Here are the formulas you can use for single-phase power calculation. We should note that AC power can switch polarity, unlike DC voltage power. Each hertz stands for the number of electricity changes happening within a wire each second. The standard for single-phase power distribution in the US stands at 120 volt AC power at 60 hertz (frequency).

In other words, it works for appliances that need a small amount of power (refrigerators, lights, heaters, TVs, and similar tech). Single-phase electric power is typically used in domestic supplies, residential homes, and small offices. Phase means the electric load distribution by either a single-phase or a three-power supply. Alternatively, you can use our kilowatts to amps three-phase converter, as well as a single-phase and DC power calculator. However, you can get precise measurements by converting these metrics with formulas. The amount of current or power depends on the power factor, type of current, and voltage type. Kilowatts can't be converted to amps directly. How can you convert amps to kilowatts for 3-phase, 1-phase alternating current (AC), or direct current (DC) electric power? In short, amperes measure current, while kilowatts measure power. Kilowatts is the amount of consumed power by the load at any instant. Let's break down what they are.Īn ampere indicates the number of currents drawn by the load. AC Apparent Power Calculator - kW to AmpsĪmpere (A or Amp) and kilowatts (kW) are two different parameters of electricity. The calculator will do everything automatically. Just fill the fields with the necessary data, including the current type, voltage, and power factor. Our single-phase and 3-phase power calculator is elementary to use. Do you want to convert Amps to kW (or the other way around) without doing mathematical calculations? No problem!

Kw to amp formula for 3 phase