Transformer Protections?

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Transformer is a device which used for step up or step down the voltage without changing frequency and power. The following protection implemented on transformer.

 Differential protection
 Over current with voltage blocking
 Composite with voltage blocking over current protection
 Leads earth fault
 Earth fault protection
 Start cooler
 Temperature protection
 Pressure release protection
 Buchlez relay
 Oil temperature high 95c
 Coil temperature high 115c
 High pressure relief device(busting disk)
 Over excitation of transformer
 Generator transformer differential protection


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