Three-Phase Transformer Figure P16–70 shows three identical ideal transformers connected to form a three-phase transformer. The windings on the primary (source) side are D-connected and the windings on the secondary (load) side are Y-connected. On the secondary side of the transformer VL2 ¼ 830 VðrmsÞ

and IL2 ¼ 40AðrmsÞ. The turns ratio of each transformer is n ¼ 0:2. Find the line voltage and line current on the primary side.

Transcribed Image Text:

ILI + VL1 1:n[ IL2 + V12 FIGURE P16-70