Calculation Parameters

• Power: Enter the total power (in kW, hp, VA, kVA and MVA) of the electrical load.
• Power Unit: Select the unit of measurement for the power input.
• Voltage: Specify the operating voltage of the system.
• Phase: Choose between single-phase, three-phase, or DC operation.
• Power Factor (cosΦ): For AC systems, if applicable, enter the power factor to account for real power usage.
• Motor Efficiency (η): Specify the efficiency of the motor.

Three-Phase Motor Current Formula

With power rating in kilowatts (kW):

\[I = \frac{1000 \cdot P}{\sqrt{3} \cdot V \cdot pf \cdot \eta}\]

With power rating in horsepower (hp):

\[I = \frac{745.7 \cdot P}{\sqrt{3} \cdot V \cdot pf \cdot \eta}\]

Single-Phase Motor Current Formula

With power rating in kilowatts (kW):

\[I = \frac{1000 \cdot P}{V \cdot pf \cdot \eta}\]

With power rating in horsepower (hp):

\[I = \frac{745.7 \cdot P}{V \cdot pf \cdot \eta}\]