Transformer delta side earth fault

How can I protect the delta side of a delta star transformer from earth faults? Please advise.
asked 11/21/2013
ahmedsaad2
ahmedsaad

1 Answer

You don't have to protect delta side of transformer.U have to understand that there is no back-path for current if earth-fault happens because delta winding connection doesn't have grounded star point. It can be made only if u have another transformer in star connection. Think only on overcurrent protection and thats all (between phases!).
answered 12/19/2013 Mirko Lezajic 8
Mirko Lezajic

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