One of the most common types of electricity conversions that must be performed is the transformation from kW (kilowatts) to Amps.
Electrical power is measured in watts, and one kilowatt is equivalent to one thousand watts (wattage).
The ampere, also known as “A,” is the unit of measurement for electrical current. It is abbreviated as “A.” (amperage).
DC KW to Amps Calculation:
The following is the formula for converting kilowatts to amps for direct current:
The power, which is measured in kilowatts (kW), is multiplied by 1000, and then divided by the voltage, which is measured in volts (V): the current, which is measured in amps (A), is proportional to the power.
I = 1000 × P / V
AC KW (Single Phase) to Amps Calculation:
Conversion from kilowatts to amperes for alternating current with a single phase:
The phase current I, which is measured in amps (A), is proportional to 1000 times the power P, which is measured in kilowatts (kW). This value is then divided by the power factor PF, which is then multiplied by the RMS voltage V, which is measured in volts (V):
I = 1000 × P / (PF × V)
AC KW (Three Phase) to Amps Calculation:
The following is the conversion from kilowatts to amps for three-phase alternating current:
When doing the calculation, using the voltage from one line to the next:
The phase current I, which is measured in amps (A), is proportional to one thousand times the power P, which is measured in kilowatts (kW), and this value is then divided by the square root of three times the power factor PF, and this value is then multiplied by the line-to-line RMS voltage VL-L, which is measured in volts (V):
I = 1000 × P / (√3 × PF × VL-L)
Using the voltage from the line to the neutral, perform the following calculation:
The phase current I, which is measured in amps (A), is proportional to one thousand times the power P, which is measured in kilowatts (kW), and this value is then divided by three times the power factor PF, and this value is then multiplied by the line-to-neutral RMS voltage, which is measured in volts (V):
I = 1000 × P / (3 × PF × VL-N)
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