A three-phase transformer is connected in a delta-delta configuration. The load is connected as a wye, and each phase has an impedance of 7 ohm. The primary is connected to a line voltage of 4160 volts, and the secondary line voltage is 440 volts. Therefore, the turns ratio is 9.45:1.

Question

Quizplus · Accepted Answer

The turns ratio is calculated by dividing the primary line voltage by the secondary line voltage, which in this case is 4160 volts / 440 volts = 9.45:1.

A Three-Phase Transformer Is Connected in a Delta-Delta Configuration