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i have 28/32 MVA power transformer with 11/6.6 KC voltage
rating and 12%impedance.it have star connection at both
side.but it have another thied winding tertiary
winding.what is used of this winding.
pl tell me
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Answer Posted / jnanesh
In star connected trans. third hormonics is significant so
to reduce that effect it is used.In delta connected trans.
third hormonics circulate witin and there is no effect.
Also plz note that in some substation for feeding internal
power to substation or local area this additional winding
is used.
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