Lecture 26 Protection of TransformersI

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=oC5VmIGxsGA

This lecture starts with types of internal faults occurring in the transformer. Then, it explains the operation of Buchholz relay for incipient fault. It also describes different types of internal fault protection technique such as overcurrent protection, restricted earth fault protection and differential protection. Further, it explains circulating current differential protection and its 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