Table of contents |
2 Wye connection 3 Delta connection 4 Terminology 5 See also |
Two different configurations:
To minimise the number of electrical connections to a generator, one end of each winding is connected to a common point called the 'neutral' or 'star' point. The other end of each winding has its own connection. This results in four connections to the generator: one neutral and three phases. This has the advantage that the neutral wire can be made thinner than the phase wires, therefore saving weight and cost. In some systems the neutral wire is omitted and the return currents are allowed to flow through the ground.
Configurations
Wye/Delta selection can be used like a gear for the motor speed. Switching “on-the-fly" starts in the Wye winding and changes to Delta winding where performance can be improved.Wye connection
B
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. N
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A C
United States    | United Kingdom |
Grounded | Earthed |
Wye or Y | Star |
See also