Pankaj B. Thote
Associate Professor, EE Department, S B Jain Institute of technology, Management & Research, Nagpur-441501
Mohammad Ashar
Assistant Professor, EE Department, S B Jain Institute of technology, Management & Research, Nagpur-441501
Kartik Rao
Ex-Student, EE Department, S B Jain Institute of technology, Management & Research, Nagpur-441501
Mansmita Kapade
Ex-Student, EE Department, S B Jain Institute of technology, Management & Research, Nagpur-441501
Abstract
Induction motors are highly reliable; they are susceptible to many types of abnormalities like overload, over voltage, under voltage, phase reversal, ground fault and insulation failure. Due to these electrical conditions the winding of motor gets overheated which leads to insulation failure and hence reduces the life of the motor. These can cause production shutdowns, personal injuries, and waste of raw material. Therefore, to protect the motor the fault must be detected in the initial stage. In the proposed protection scheme, a panel has been designed which alone can protect induction motor from various abnormal conditions such as overload, overvoltage, under voltage and phase reversal. A microprocessor based relay is designed and is tested with the setting of various preset values of parameters. The simulation and hardware results are presented to validate the proposed method.