Answer / samuel

Dyn11 distribution transformer, primary side Delta connection is with the reason of alleviating the effect of secondary winding's any of other than similar phase effect in the primary side. with the concept of magneto motive force. Secondary winding star with neutral is required for customers with requirement of single phase with ground........

Answer / naga

DyN11 distribution tr is used as neutral wire in secondary
is required and winding connections are easy and simple

Answer / k.prakashchandra

DyN11 distribution tr is used as neutral wire in secondary
is required and winding connections are easy and simple.

Answer / s.panneer selvam

In Dy11 secondary leads primary by 90 degree means in case of any fault the secondary protection which is sensitive than primary will always senses the fault before and enable to trip. the reason behind is to enable protection not to allow more current to flow through the circuit in the event of fault or abnormality. star point needed for neutral and we use  have single phase load are  of secondary reason and i think the primary reason may be this which i read from MG say book

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