Abstract
This paper is designed to protect an Induction Motor from different types of abnormalities. Providing protection for motors is very important in industries, power plants etc. such that production is not hampered owing to failure of any motor. Purpose of motor protection is to limit the effect of disturbances and stress factors to a safe level. If a motor failure takes place, the protection is needed to disconnect the motor from the supply network in due time. Here we have described different abnormal conditions in three phase induction motors and designed a protective scheme to protect it from different abnormalities. We have also described the method which shows how to set electromagnetic relay for large motor and also described the same method in case of numerical relay. Here we have shown one of the faulty condition with the help of PSCAD (student version).
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