AC Generators AC GENERATOR OPERATIONIn the other type of connection, one of theFigure 10 Wye Connectionleads of each winding is connected, andthe remaining three leads are connected toan external load. This is called a wyeconnection (Y) (Figure 10).The voltage and current characteristics ofthe wye-connected AC generator areopposite to that of the delta connection.Voltage between any two lines in a wye-connected AC generator is 1.73 (or )3times any one phase voltage, while linecurrents are equal to phase currents. Thewye-connected AC generator provides an increase in voltage, but no increase in current (Figure11).An advantage of a wye-connected AC generator is that each phase only has to carry 57.7% ofFigure 11 Characteristics of a Wye-Connected AC Generatorline voltage and, therefore, can be used for high voltage generation.Rev. 0 Page 13 ES-10

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