COUPLING UNIT FOR CONNECTION OF GENERATOR HIGH- VOLTAGE WINDING AND INLET BAR

摘要

A coupling unit for connection of a generator highvoltage winding and an inlet bar comprises summary turns of the generator high-voltage winding made up of conducting layers which are insulated conductors connected in the zone of the high-voltage lead-in to the inlet bar and cooling ducts. Summary turns of the generator high-voltage winding are made as concentrically arranged tubes connected to one another in the zone of the high-voltage lead-in by means of template tubular elements providing for gradual change over of the tube of the first summary turn into a tube of the second summary turn, of the tube of the second summary turn into a tube of the third summary turn and so in until the tube of the penultimate summary turn becomes the tube of the last summary turn of the generator high-voltage winding. Cooling ducts are divided into a central duct and peripheral ducts for cooling. The inlet bar with a coating made up of insulation layers and sheaths forms a high-voltage lead-in element, each sheath being coupled to its summary turn of the generator high-voltage winding.