#  > Engineering Notes - Handwritten Notes of all Engineering branches >  > Electrical and Electronics Engineering Notes >  >  Differential Protection of Transformer power system analysis free pdf download

## richa090

The faults appear in the transformer inside the insulating oil will be determined by Buchholz relay . In case any specific fault occurs in the transformer but not in oil then it can not be determined by Buchholz relay . Any flash over at the bushings are not adequately protected by  Buchholz relay . Differential relays can detect such type of faults .  Moreover Buchholz relay is provided in transformer for detecting any  internal fault in the transformer but Differential Protection scheme  detects the same in faster way .





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