how can we decide where we have to DYn11 or other vector
group transformer

Answer Posted / eng. ahsan rassam

DEPENDING ON TYPE SYSTEM VOLTAGE FOR EXAMPLE IF WE HAVE
33KV AND 11KV WE CHOOSE VECTR GROUP DYN11. AND IF WE WANT
TO OPRET TWO OR MORE TRANSFORMER OR GENERATOR IN PRALLER WE
MUST CHOSSE SAME VECTOR GROP.

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