Why we should use delta connection in primary and star
connection in an distribution transformer, which converts
400v a.c. voltage to 33kv.
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Answer Posted / gangadhar
Primary function of Distribution Transformer is to step-
down 33kv into 440v..while designing the transformer we
have to consider conductor size also...in delta side line
current=1.732 times phase current and in star side phase
current=line current...as we know current is directly
proportional to cross-section of the conductor..keeping in
mind about the cost factor of conductor on load side they
prefer star connection on load side..Guys i tried to
explain in different way..i agree with above answers
also
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