Load calculation - Electrical Motor
Easy to use excel spread sheet calculate load of electrical motor.
Following calculation can be made with excel spreadsheet.
Calculate Velocity From RPM
Velocity From RPM = 0.262DiameterRPM*Velocity
Calculate Velocity from HP & Force
Velocity from HP & Force = HP X 33000 / Force Lbs
Calculate RPM from Velocity
RPM from Velocity = FPM/ (.262 * Diameter)
Calculate RPM from HP & Torque
RPM from HP & Torque = HP X 63025 / Torque
Calculate Diameter or P.D. of Wheel
Diameter or P.D. of Wheel = FPM/ (.262 * RPM)
Calculate Horsepower from Torque and RPM
Horsepower = Torque * RPM / Horsepower
Calculate HP from Force and Velocity
Horse power = Force lb * FPM / 33000
Calculate Torque from HP & RPM
Torque = HP * 63025 / RPM
Calculate Torque from Force
Torque = Force lbs * Radius
Calculate Effective Force
Force = HP * 33000 / Velocity
Calculate Eff. Tension from Torque & Radius
Eff Tension = Torque / Radius
Calculate Eff. Tension from HP & FPM
Eff Tension = HP * 33000 / FPM
Calculate 3 Phase Motor Horsepower
3 phase motor horse power = Volts * Amps * Eff * PF * 1.73 / 746
Calculate DC Motor Horsepower
DC Motor horse power = Volts * Amps * Eff / 746
Kw to HP (Kilo watt to Horsepower conversion tool )
Horsepower = Kw* 1.341
The spreadsheet is a useful tool to calculate the parameters of AC and DC motors.
Instruction to use - Open the spreadsheet and the inputs and it will calculate the required parameter
Download the tool Electrical Load calulation by AutomationForum.xls (64 KB)