Delta - Wye(∇-Y) & Wye - Delta ( Y-∇ )Transformation: Example 3 (Very Very Hard) - YouTube
How to transform a three-phase generator (voltage sources) connected in delta/triangle with series impedance into a generator connected in wye/star - Quora
Electrical Engineering: Ch 13: 3 Phase Circuit (30 of 53) Balanced Delta-Y Circuit: Line Current=? - YouTube
Phase Converters & Delta vs. Wye Configured Three-Phase Power - Phase Converter Information
Star to Delta & Delta to Star Conversion. Y-Δ Transformation | Basic electrical engineering, Physics classroom, Electrical engineering books