(19)

(11)

EP 2 673 790 A1

(12)

(43) Date of publication: 18.12.2013 Bulletin 2013/51 (21) Application number: 11704748.0 (22) Date of filing: 08.02.2011

(51) International Patent Classification (IPC):  H01F 27/30(2006.01) (86) International application number: PCT/EP2011/051809 (87) International publication number: WO 2012/107078 (16.08.2012 Gazette 2012/33)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (71) Applicant: Siemens Aktiengesellschaft 80333 München (DE)	(72) Inventors: HIPSZKI, Gyula H-1213 Budapest (HU) OLÁH, Antal H-1213 Budapest (HU) MÉRI, András H-1089 Budapest (HU)