For
secondary distribution, the transformer(s) used is/are
Auto
Transformer
Star-Delta
and Delta-Star Transformer both
Star-Delta Power Transformer
Delta-Star Distribution Transformer
Delta-Star Distribution Transformer
For
secondary distribution the transformer used is delta-star connection, this
combination is useful for higher voltages. Delta-star distribution transformer
is used for neutral wire for the distribution systems of 3-4wire.
Hence,
the correct option is (D).
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