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 / swayanjit
WE USE DELTA CONNECTION AT PRIMARY AND STAR CONNECTION AT
SECONDARY IN CASE IF STEP UP OF VOLTAGE REQUIREMENT BECAUSE
IN DELTA/STAR TRANSFORMER THE OUT PUT VOLTAGE WILL BE 1.413
TIMES HIGHER THAN THE PHASE VOLTAGE EVEN WHEN BOTH HAVING
SAME NUMBER OF TURN. SO THE SECONDARY WILL REQUIRE LESS
INSULATION.
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