DocumentCode
835849
Title
Overload Protection of Motors---Four Common Questions
Author
Schatz, Marc W.
Author_Institution
Square D Company
Issue
2
fYear
1971
fDate
3/1/1971 12:00:00 AM
Firstpage
196
Lastpage
207
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;
fLanguage
English
Journal_Title
Industry and General Applications, IEEE Transactions on
Publisher
ieee
ISSN
0018-943X
Type
jour
DOI
10.1109/TIGA.1971.4181285
Filename
4181285
Link To Document