Q. A three phase distribution transformer will be usually connected in

A
Star- Delta
B
Delta- Star
C
Star- Star
D
Delta- Delta
Solution:

Usually a three phase distribution transformer will be Delta- Star connected. It will be a step down transformer which converts the voltage level from 11 kV to 415 V range. The diagram shows the connection and the Star output terminals take a neutral line also to provide the supply for the single phase consumers.

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