A three phase Delta - Wye connected transformer supplies 5000KVA at 100% power factor. Taps are set at 69 - 12.47kv. Calculate the following...
1.)Transformer turns ratio phase to ground.
12.47KV phase to phase = 7208V phase to ground
69000V / 7208V = 9.57
so the turns ratio is 9.57 to 1
2.)Secondary Line current
5000KVA = 12470V * I * 1.73
I = 231.77A
3.)Primary Line current
5000KVA = 69000V * I * 1.73
I = 41.89A
Are these calculations correct?
1.)Transformer turns ratio phase to ground.
12.47KV phase to phase = 7208V phase to ground
69000V / 7208V = 9.57
so the turns ratio is 9.57 to 1
2.)Secondary Line current
5000KVA = 12470V * I * 1.73
I = 231.77A
3.)Primary Line current
5000KVA = 69000V * I * 1.73
I = 41.89A
Are these calculations correct?
