HIGH-VOLTAGE WINDING FOR CORE-FORM POWER TRANSFORMERS

摘要

A high-voltage winding for core-form power transformers is disclosed that uses two different conductor configurations within a single coil to minimize eddy current losses. The winding (5) includes a first elongated conductor bundle (7) formed from a plurality of thin enamel coated conductor ribbons (8) arranged in side by side relation. A plurality of second elongated conductor bundles (40) are each formed from at least one bundle section (42) having a multiplicity of elongated insulated conductor strands (45) arranged in side by side relation. Each of the conductor strands (45) is less than 40 mm thick. The coil includes a top end section (22), a body section (20) and a bottom end section (24). The body section (20) is spirally wound with the first conductor bundle. The top and bottom end sections are wound with the second conductor bundles. In windings that include tap connectors, the tap section (26) is also wound with one of the second conductor bundles (40).