Three Winding Transformers | Winding Impedances | T-Model

Three Winding Transformers | Winding Impedances | T-Model This video shows how to calculate the winding self-impedances from leakage impedances for three winding transformers. One important note is that the resistance is not the winding DC resistance. This resistance is the AC resistance due to I^2R and stray losses caused by leakage flux. This video also shows how testing is performed to obtain the required resistances and reactances, which are used to create the T-model.