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why we commonly use delta star winding in power and
distribution transformers
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Answer Posted / gunasekaran
one voltage level single earthing is recommended that is at
source for G.T generator is source it is already earthed.if
we use star we have to do the earthing so delta connection
is preferred.for distribution sending end is already earthed
at substation so HV side of the distribution transformer is
delta for LV side transformer is source so star with earthed
neutral. if two earthing is provided zoro sequence current
getting closed path so wave farm become distracted.
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