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Patent Searching and Data


Title:
TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2011/048039
Kind Code:
A3
Abstract:
The present invention relates to a transformer (2) containing an electrical active part (4) arranged in an insulating space (14) and comprising a primary winding (8), secondary winding (6) and a magnetic core (10), said windings (6, 8) being wound around the magnetic core (10) and being radially spaced apart from each other by a winding space (12) comprising an insulation fluid (16; 16a). The transformer (2) further comprises a block (18) defining a compartment (20) closed and separated from the remaining insulating space (22), said closed compartment (20) being at least partially arranged within the winding space (12). The invention is characterized in that the closed compartment (20) comprises an insulation fluid (16a) which is different from the insulation fluid (16b) comprised in the remaining insulating space (22) of the transformer (2), the insulation fluid (16a) comprised in the closed compartment (20) having a higher dielectric breakdown field strength than the insulation fluid (16b) comprised in the remaining insulating space (22).

Inventors:
MURILLO RAFAEL (ES)
Application Number:
EP2010/065608
Publication Date:
June 30, 2011
Filing Date:
October 18, 2010
Export Citation:
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Assignee:
ABB TECHNOLOGY AG (CH)
MURILLO RAFAEL (ES)
International Classes:
C07C49/167; H01F27/02; H01F27/08
Foreign References:
FR1070676A1954-08-05
US6157282A2000-12-05
US20050263737A12005-12-01
US4488134A1984-12-11
US4523171A1985-06-11
EP1733764A22006-12-20
US20080033201A12008-02-07
US20090183856A12009-07-23
Attorney, Agent or Firm:
INGOLD, Mathias (ABB Patent Attorneys, Zusammenschluss 154c/o ABB Schweiz AG,Intellectual Property CH-LC/IP, Brown Boveri Strasse 6 Baden, CH-5400, CH)
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