For a 500 MVA 400/220/33KV transformer following data given HV power = 500 MVA

For a 500 MVA 400/220/33KV transformer following data given
HV power = 500 MVA
IV power = 500 MVA
LV power = 5 MVA
If input power is 500 MVA then how output power is
(500+5)MVA.
Can anyone help

Question Posted / riteshonn

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For a 500 MVA 400/220/33KV transformer following data given HV power = 500 MVA IV power = 500 MVA ..

Answer / 7anoter4

If the tertiary winding is connected in Delta only in order
to cancel the current unbalance in steady state no current
will flow through it, that means no power consuming. See
[for instance]:http://www.electrical4u.com/tertiary-winding-
of-transformer-three-winding-transformer/

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