Transformer Equivelant Circuit

[Mazmoza]

Dear All

Please i need to understand how to calculate the single phase equivelant circuit for a three phase star - delta transformer .....

i need to know how the secondry delta connection is converted to equivlent single phase circuit taking into consideration the voltages , currents & the transformers winding reactances & resistances

 

[crutschow]

Sounds like a good homework question.