Patent ID: 9147520
Filing Date: 2015-09-29
Classification: H01F

Abstract:
1. Dry-type transformer comprising a winding with a tapping zone, the tapping zone being the zone wherein at least two connections can be made, allowing to change the number of turns of the winding and thus change the turn ratio of the transformer, and with at least a first non-tapping zone, wherein the winding comprises a conductor having, in at least part of the tapping zone, a first width in the axial direction of the winding, and having, in at least part of the first non-tapping zone, a second width in the axial direction of the winding, the first width being smaller than the second width wherein the conductor of the winding is made of at least two materials with different conductivity; wherein a material with higher conductivity of the at least two materials is used in the conductor in the tapping zone where there is a smaller width.