energization of the transformer, when the transformer is first energized, or some repair work on the transformer may have been ... The differential current is almost purely sinusoidal when the transformer has an internal fault, whereas it is full ofanbsp;...
|Title||:||Power System Relaying|
|Author||:||Stanley H. Horowitz, Arun G. Phadke|
|Publisher||:||John Wiley & Sons - 2008-04-30|