To calculate the total power in a 3 phase system, you will need to know the voltage and current of each of the three phases. The formula for calculating total power in a 3-phase system is: Total Power = √3 x Voltage. Contact online >>
To calculate the total power in a 3 phase system, you will need to know the voltage and current of each of the three phases. The formula for calculating total power in a 3-phase system is: Total Power = √3 x Voltage...
The formula used to calculate the three-phase power is as follows: Three Phase Power (P) = Voltage (V) * Current (I) * Power Factor (PF) * √3 In this formula, the voltage is measured in volts (V), representing the...
To calculate the total power of a three-phase system, the formula used is as follows: Total Power (W) = √3 × Voltage (V) × Current (A) × Power Factor This formula considers that the three-phase system has three...
The main formula for calculating the total power in a three-phase system, given the voltage (V) and current (I), is as follows: P = √3 × V × I × cosφ P: This denotes the total power in the system, measured in watts...
It’s quite easy to convert kW to amps and amps to kW in a simple 1-phase AC circuit (compared to a 3-phase power calculation). That requires only the basic Ohm’s law; you can simply use our kW to amps calculator here for conversion.
In a 3-phase AC circuit (usually a 3-phase motor), converting amps to kW and kW to amps is not all that easy. To simplify the whole thing, we have created 2 three-phase power calculators:
Basically, we just multiply amp by volts. The ‘1,000’ factor is there to convert from W to kW; we want the resulting power to be in kilowatts. 1 kW = 1,000W.
Note: Later on, we will also see how we can use the 3-phase current formula to design a 3-phase motor amps calculator. That one converts kW to amps in 3-phase circuits, very important in electric motor design.
You can freely use this calculator to convert amps to kW in a 3-phase circuit. You need to input the amps, voltage, and the power factor (it’s between 0 and 1, specific for each circuit):
As you can see, the more amps and volts you have, the more powerful 3-phase electric motor you have. Quite similarly, a higher power factor is proportional to higher power output.
You can use this example to see how the 3-phase power calculator works: A 100 amps motor on a 240V 3-phase circuit with a 0.9 power factor produces 37.41 kW of electrical power. Insert these 3 quantities in the calculator, and you should get the same result.
Using this power formula, we can, for example, do a 3-phase motor kW to amps calculation. Do note that if a 3-phase motor with lower voltage and lower power factor will draw more amps to produce the same power output.
To calculate the amps from kW, you need to input the kW, voltage, and power factor of a 3-phase motor. The calculator will dynamically calculate the current (amps) based on your inputs:
About 3 phase power calculation example
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