I have a 3-phase transformer with primary and secondary windings both star(neutral connected). When connected to 3-phase source whose line volts is 415V, I got the following readings at secondary winding:
phase A to neutral : 105V phase B to neutral : 110V phase C to neutral : 220V
Please I want to know the cause of lower phase voltages on lines A and B. Thank you. i will appreciate your answers.