Title :
Overload Protection of Motors---Four Common Questions
Author_Institution :
Square D Company
fDate :
3/1/1971 12:00:00 AM
Abstract :
The four most commonly asked questions regarding overload protection of small induction motors (up to 200 hp) are discussed. 1) What are the common causes of motor failures? 2) What types of overload protection are available, and what are the advantages and disadvantages of each? 3) When are three overload relays required? 4) Do moderm overload relays protect the new NEMA rerate motors?
Keywords :
Circuits; Electric motors; Heating; Induction motors; Insulation; Protection; Protective relaying; Temperature; Torque; Voltage control;
Journal_Title :
Industry and General Applications, IEEE Transactions on
DOI :
10.1109/TIGA.1971.4181285
