Engineering Board Exam Reviewer · Three-Phase Systems in Power Applications · easy

A wye-connected three-phase source has a line-to-line voltage of 480 V. What is its phase voltage?

  1. 277 V
  2. 480 V
  3. 831 V
  4. 240 V

Answer

A. 277 V

Solution

Vph=VL/ 3=480/ 3=277 V.

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