Invention Grant
- Patent Title: Transformer with shielding rings in windings
- Patent Title (中): 变压器带绕组中的屏蔽环
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Application No.: US13728569Application Date: 2012-12-27
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Publication No.: US08797133B2Publication Date: 2014-08-05
- Inventor: Rafael Murillo , Carlos Roy , Jasmin Smajic , Lise Donzel , Jens Tepper , Jesús Letosa Fleta , Antonio Usón , Maria Teresa Villen , Miguel Samplon
- Applicant: ABB Technology AG
- Applicant Address: CH Zurich
- Assignee: ABB Technology Ltd.
- Current Assignee: ABB Technology Ltd.
- Current Assignee Address: CH Zurich
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: EP10167483 20100628
- Main IPC: H01F27/32
- IPC: H01F27/32

Abstract:
A coil and electric shielding arrangement for a dry-type transformer includes an electric shielding device arranged at a distance from a winding, at an axial end of the winding perpendicular to a longitudinal axis of the transformer, and parallel to a top surface of a coil that is wound around the axis such that the electric shielding device covers a cross-sectional area of the winding perpendicular to the longitudinal axis. An insulation material attached to the winding and to the electric shielding device establishes a first distance between the winding and the electric shielding device along the longitudinal axis such that the winding is shielded against another electric field. The winding and the electric shielding device are casted in a block which insulates the electric shielding device from the electric field of the winding by establishing a second distance between the winding and the electric shielding device.
Public/Granted literature
- US20130113598A1 TRANSFORMER WITH SHIELDING RINGS IN WINDINGS Public/Granted day:2013-05-09
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