Patent ID: 8314675

Claim:
A method for production of a winding block for a coil of a transformer, comprising: applying plural turns of at least one winding composed of electrically conductive material to form a first conductive layer; applying plural turns of an insulating layer composed of a number of windings of insulating fiber material, wherein the turns of electrically conductive material are applied independently of the turns of the insulating fiber material, wherein a number of turns of the electrically conductive material and the insulating fiber material are equal, and wherein the turns of the electrically conductive material and the insulating fiber material are applied synchronously and with a different axial feed rate; and applying, after a predetermined number of the turns of the electrically conductive material have been applied, a smaller number of turns of the electrically insulating material to the turns of the electrically conductive material, over a same distance, to form a first insulating layer, such that a remaining number of turns of the electrically insulating material up to the number of turns of the electrically conductive material is applied as edge insulation with turns of the insulating fiber material for the winding block, applying, additional electrically conductive material on the insulating layer to form separated winding sections on either side of an axis of the coil, and applying, after a predetermined number of the turns of the additional electrically conductive material have been applied, a smaller number of turns of additional electrically insulating material to the turns of the additional electrically conductive material, over a same distance, to form second insulating layers on each separated winding section, such that a remaining number of turns of the additional electrically insulating material UP to the number of turns of the additional electrically conductive material is applied in a space between the separated winding sections.