An electrical motor designed for high starting torque and adjustable speed utilizes a rotor with windings connected to external resistors through slip rings. This configuration allows for control of the motor’s speed-torque characteristics by varying the resistance connected to the rotor. A typical application might be a large pump or fan where precise control is required.
Offering significant advantages in applications requiring high starting torque and variable speed operation, this motor type has played a role in industrial settings for over a century. The ability to control speed and torque makes it suitable for demanding tasks such as crane hoists and conveyors, offering efficiency and robust performance in challenging environments. External resistance control also enables smoother starting and reduces inrush current compared to other motor designs.
