Title :
Improving existing motor protection for medium voltage motors
Author :
Paoletti, Gabe ; Rose, Alex
Author_Institution :
Westinghouse Electr. Corp., Baltimore, MD, USA
Abstract :
The authors analyze motor failures and the associated costs. The abilities and limitations of older forms of motor protection utilizing induction type over current relays are contrasted with the desired protection. The features of several different types of current microprocessor-based relays are reviewed as eligible candidates for motor protection upgrades. An example of work performed as part of a comprehensive field retrofit is presented, as well as the associated economic considerations.<>
Keywords :
economics; electric motors; electrical engineering computing; machine protection; microcomputer applications; relay protection; current relays; economic considerations; induction relays; medium voltage motors; microprocessor-based relays; motor failures; motor protection; retrofit; Dielectrics and electrical insulation; Failure analysis; Heat transfer; Lubrication; Medium voltage; Oil insulation; Protection; Rotors; Shafts; Stator cores;
Conference_Titel :
Cement Industry Technical Conference, 1988. Record of Technical Papers., 30th IEEE
Conference_Location :
Quebec, Quebec, Canada
DOI :
10.1109/CITCON.1988.13236
