Electrical Engineering › Section M · Transformers and polyphase systems › Topic M.7
Y-connected generators and loads
Join one end of each generator coil at a common point and you have a Y connection, the most common arrangement in power distribution. It offers two voltages from one system, such as 120 V and 208 V, linked by a factor of √3 and a 30° shift.
In this topic
- Connecting the coils in Y
- Phase quantities and line quantities
- Line voltage from phase voltages
- Worked example: line voltages of a 120 V Y
- Two voltages from one system
- Phase sequence in practice
- The Y-Y system
- Worked example: a balanced Y-Y load
- The Y-Δ system
- Worked example: a balanced Y-Δ load
- Common mistakes to avoid
- Key takeaways
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