Monday, June 27, 2011
2:48 PM | Posted by
Anonymous |
There are two ways to connect three windings that have a total of six leads(the ends of the winding wires) symmetrically. The two symmetrical connection configurations of a three phase generator (or motor) are called delta and wye(some people say Star).
Above Figure shows these two connection types. Generators usually have their stator windings connected internally in either a delta or wye configuration.
The generator nameplate(like the ID of any equipment.it contain all data about the machine) specifies which winding configuration is usedon the stator Delta or Wye
Delta
Delta configurations have all three windings connected in series, as shown inabove figure. The phase leads are connected to the three common points where windings are joined.
Wye
The wye configuration connects one lead from each winding to form a common point called the neutral. The other three phase leads are brought out of the generator separately for external system connections. The neutral is often
grounded to the station ground grid for voltage reference and stability.
Grounding the neutral is discussed later in this course.
Do you feel confused confused about this lesson? Leave your question now in a comment.
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