A balanced three-phase transformer bank with the Δ -Y connection depicted in Fig. 13.137 is used to step down line voltages from 4,500 V rms to 900 V rms. If the transformer feeds a 120-kVA load, find:
(a) The turns ratio for the transformer,
(b) The line currents at the primary and secondary sides.

Transcribed Image Text:

500 V 900 V 42 kVA Three-phase load