3-Phase Systems: Voltage Relationships

This lecture covers the relationships between phase voltages and line voltages in 3-phase systems, including the calculation of line-to-line voltages. It also discusses the characteristics of balanced three-phase systems, the power calculation in delta and wye loads, and the concept of active, reactive, and apparent power. The instructor explains the importance of power factor and the implications of unbalanced three-phase systems, providing examples to illustrate the concepts.