delta star tranformer

[xuxu]

we have delta star transformer with star point grounded.

my question is:
in case of earth on star side will relay on delta side see the fault? if not,what happens with the currents on the delta side during the earth fault?

 

[davidbeach]

No. See thread238-212882.

 

[waross]

The delta side will see heavy current but the relay will not know that it is the result of an earth fault.

Bill
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"Why not the best?"
Jimmy Carter

 

[jghrist]

The delta side will see a phase-to-phase fault.