ELBOW 1343804 - Caterpillar

Three-Phase Voltage Connections
The Wye configuration for a 480 V generator is given in the following diagrams. The Wye configuration is also known as a “star” configuration.The terminals must be connected securely. The terminals must also be insulated with a good quality electrical tape.A generator in the Wye configuration may require a two-thirds pitch winding if the neutral is solidly grounded. Refer to the Specifications, LEBX6693, "Generator Set Installation Drawings" for more information. A floating neutral does not require a two-thirds pitch winding.Wye Configuration Diagram
6 Lead Generators
Illustration 1 g00626053
Typical Wye Configuration with 60 Hz and 6 Leads
Single-Phase Current From a Three-Phase Generator
Three-phase current and single-phase current can be taken simultaneously from a generator that is connected for three-phase service. Connect the load to any two of the three three-phase leads. This will provide single-phase voltage at the same voltage as three-phase voltage.Connect the load to any phase lead and to the neutral lead of the Wye Configuration. This will produce voltage at 58% of three-phase voltage.Refer to Operation Section, "Generator Operation" for allowable single-phase loading unbalance.Single-phase power that is taken from a three-phase source can be a problem. Ensure that the single-phase loading is equally distributed.Do not exceed the nameplate current rating for any one phase.Wye Configuration Diagram
6 Lead Generators
Illustration 2 g00626132
Diagram for Single-Phase Voltage with 6 Lead Wye Configuration