Title :
A 2-motor A-C mine hoist control system
Author_Institution :
Electric Controller and Manufacturing Company, Cleveland, Ohio
fDate :
3/1/1956 12:00:00 AM
Abstract :
A method for obtaining reduced speed operation of a-c mine hoists is discussed. Control equipment for providing a very slow stable speed for mine shaft and cable inspection and for cable reeving is described. How frequency responsive relays, energized by a frequency generator coupled to one of the motors, control acceleration, slow speed, and overspeed is explained.
Keywords :
Contactors; Induction motors; Relays; Rotors; Synchronous motors; Torque;
Journal_Title :
American Institute of Electrical Engineers, Part II: Applications and Industry, Transactions of the
DOI :
10.1109/TAI.1956.6367139
