Q.1:What protection will be used on HT and LT side of 33/0.4
KV, MVA transformer. Indicate capacities of protective
device to be used.
Q.2:Which types of back-up protections are used in the power
transformers? What do you understand by the term over travel
in the relay?
Q.3:How star and delta connected winding transformer are
provided from earth fault
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