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keeping in view of parallel operation which of the 3 phase
transformer connection are possible?
a)delta-delta to delta-star b) delta-delta to star-delta c)
star-star to delta-delta d) delta-star to star-delta
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Answer Posted / vikas tomar
If the transformers are star-star or delta-delta, they can
not be paralleled with star-delta or delta-star,As there
will be the phase difference of 30 degree b/w the secondary
voltages for the same supply voltages across the primaries
of the two transformers.It will result the circulating
current in transformer windings.
Hence option (d)is correct answer.
| Is This Answer Correct ? | 6 Yes | 0 No |
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