Voltage endurance test facility for electric generator stator coils

The development of new coil designs with the use of updated materials and/or processes requires voltage endurance testing as one of the tests to verify the new coil design. From established voltage endurance curves, a new insulation system can be evaluated against accepted coil designs. An expanded voltage endurance test lab has been developed which has the capabilities for testing both coil sections and full size turbine generator coils. The design of the test facility and its capabilities and operation are described.