How To Calculate Power Of Motor. The equation is W AV sqrt 3 where A is amperes V is volts and sqrt 3 is the square root of 3 about 173. The power absorbed by stepper motors varies depending on the state of the motor and driver.
E kWh 0746 P HP X t h. Parameters taken from hand-held instruments you can use Equation 1 to calculate the three-phase input power to the loaded motor. Whether its a 3-phase or single phase voltage supply.
Note that the driving force of an electric motor is torque - not horsepower.
1 hp 0745 kW. You can then quantify the motor s part-load by comparing the measured input power under load to the power required when the motor operates at rated capacity. RLA LRA 556. Power factor PF is the ratio of working power measured in kilowatts kW to apparent power measured in kilovolt amperes kVA.
