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What are the different protection systems used to protect
the transformer internally and externally?
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Answer Posted / imdad husen
IN TRANSFORMER PROTECTION IF HIGH INTERNAL FAULT OCCUR BETWEEN L.V.C.T.AND H.V.C.T. THEN DIFFERENTIAL RELAY SHOULD BE ORATED AND EXTERNAL FAULT OCCUR DIFFERENTIAL RELAY SHOULD NOT ORATED BECAUSE OF ZERO SEQUENCES CURRENT IS ABSENT
IN TRANSFORMER PROTECTION IF EXTERNAL FAULT OCCUR RESTRICTED EARTH FAULT RELAY SHOULD BE OPARTED
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