Amps Per Kw Calculator

BySteven

Use our Amps Per Kw Calculator by entering values of Power (Watts), Voltage (V) to get the your results quickly

Amps Per Kw Calculator

Enter any 2 values to calculate the missing variable

 

The Amps per kW Calculator makes things way easier for you. It assists you to measure the number of amps required for a specific kilowatt rating based on the voltage and power factor. More importantly, this tool is also useful in electrical calculations for both single-phase and three-phase systems, helping you manage the current and power capacity of an electrical system.

Formula:

kW=PF×A×V1000kW = \frac{PF \times A \times V}{1000}

VariableDescription
kWKilowatt (power)
PFPower factor (dimensionless)
ACurrent in amperes (A)
VVoltage in volts (V)

How to calculate amps from kW ?

The general formulas to convert kW to amps vary based on the phase type (single-phase or three-phase).

  1. Single-Phase Formula:

    Amps(A)=kW×1000Voltage(V)\text{Amps} (A) = \frac{\text{kW} \times 1000}{\text{Voltage} (V)}

  2. Three-Phase Formula:

    Amps(A)=kW×10003×Voltage(V)×Power Factor\text{Amps} (A) = \frac{\text{kW} \times 1000}{\sqrt{3} \times \text{Voltage} (V) \times \text{Power Factor}}

Examples:

  1. Single-phase calculation: For a 240V single-phase system and a load of 1 kW:

    Amps=1×1000240=4.17A\text{Amps} = \frac{1 \times 1000}{240} = 4.17A

  2. Three-phase calculation: For a 440V three-phase system with 7.5 kW and a power factor of 0.8:

    Amps=7.5×10003×440×0.8=12.31A\text{Amps} = \frac{7.5 \times 1000}{\sqrt{3} \times 440 \times 0.8} = 12.31A

Solved Calculation:

Example 1 (Single-phase system):

StepCalculation
Voltage (V)240V
Current (A)10A
Power Factor (PF)0.9
kW CalculationkW=0.9×10×2401000kW = \frac{0.9 \times 10 \times 240}{1000}
ResultkW=2.16 kWkW = 2.16 \, \text{kW}

Answer: The power is 2.16 kW for a 10A current at 240V.

Example 2 (Three-phase system):

StepCalculation
Voltage (V)415V
Current (A)15A
Power Factor (PF)0.85
kW CalculationkW=0.85×15×4151000kW = \frac{0.85 \times 15 \times 415}{1000}
ResultkW=5.29 kWkW = 5.29 \, \text{kW}

Answer: The power is 5.29 kW for a 15A current at 415V.

What is Amps per kW Calculator?

An Amps per kW Calculator is an accessory that is used to convert between kilowatts (kW) and amps (A) in both single-phase and three-phase systems. Indeed, knowing the relationship between kilowatts, voltage, and amperage is essential for electrical system design, load calculations, and power distribution.

Final Words:

In essence, this calculator is useful for finding out the current that is required for specific loads, sizing electrical components, and ensuring safe operation of electrical systems. This is by far the most valuable tool in your hands.

 

Steven

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