Method for producing windings for a dry-type transformer

US8181334B2 · kind B2 · utility

Assignee

• ABB TECHNOLOGY AG · CH

Inventors

• Benjamin Weber · Winterberg, DE
• Frank Cornelius · Orlando, US
• Jens Tepper · Wolfenbüttel, DE
• Oliver Becker · Ludwigsburg, DE
• Paul Szasz · Heidelberg, DE

Key dates

• Filing date: May 26, 2011
• Grant date: May 22, 2012
• Expiry date: May 26, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49071
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A method is provided for producing windings for a dry-type transformer with in each case one winding for the low voltage (LV winding) and one for the high voltage (HV winding). The LV and HV windings are each electrically insulated from one another and have layers which are electrically insulated from one another by virtue of, initially, the winding for the low voltage being produced from electrically conductive wire or tape material and an insulating layer including resin-impregnated fibre material. Prior to the application of the HV winding, the maximum insulating thickness for the layer insulation and the number of fiber rovings corresponding to this insulating thickness can be determined, and each winding layer and the associated insulating layer can be produced simultaneously with a physical offset with respect to one another. To produce the winding, fiber polymer layers can be applied, as layers of insulation, simultaneously with the winding conductor between the individual winding layers of the winding, and the finished winding is subjected to a curing operation.