For an electric motor torque increases a gasoline motor has a peak torque value for a given rpm 3600.
Electric motor torque ratings.
Electric motors start up with very high torque level off slightly under and maintain that level throughout if they are overloaded the torque drops quickly and the motor stalls.
Reduced voltage soft starters are used to limit the start current reducing the locked rotor torque or starting torque and are common in applications which is hard to start or must be handled with care like positive displacement pumps cranes elevators and similar.
An electric motor is an electrical machine that converts electrical energy into mechanical energy most electric motors operate through the interaction between the motor s magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor s shaft.
Horse power and speed in rpm.
T inlb p hp 63025 n 1.
T inlb torque in lb f.
T ftlb torque lb f ft.
The following calculators compute the various torque aspects of motors.
Electric motors can be powered by direct current dc sources such as from batteries motor vehicles.
Fla according to the voltage rating.
Reduced voltage soft starters.
T ftlb p hp 5252 n 1b.
N revolution per minute rpm alternatively.
P hp horsepower delivered by the electric motor hp.
1 ft lb f 1 356 nm.
A motor does an amount of work equal to the torque it delivers times the angle through which it turns.
Electrical motor power velocity and torque equations.
P t v 5 250.
An electric motor produces torque in response to load.
Electric motors have a rated horsepower hp.
You load it the rpm drops and it draws more current and produces more torque.
Gas engines are usually rated for horsepower and torque at a specific rpm go under or especially over and the torque drops off.
Motor power then is the torque times the angular speed.
Accelerating torque available motor torque load torque.
These equations are for estimation only friction windage and other factors are not taken into consideration.
It s easy to peg that as a hp rating measured torque at a fixed rpm.
