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(11)

EP 1 034 546 A1

(12)

(43) Date of publication: 13.09.2000 Bulletin 2000/37 (21) Application number: 98945740.3 (22) Date of filing: 29.09.1998

(51) International Patent Classification (IPC)7: H01F 27/32, H02K 3/30 (86) International application number: PCT/SE9801/733 (87) International publication number: WO 9927/546 (03.06.1999 Gazette 1999/22)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT Designated Extension States: LV (30) Priority: 26.11.1997 SE 9704392 (71) Applicant: ABB AB 721 83 Västeras (SE)	(72) Inventor: LEIJON, Mats S-723 35 Väster s (SE) (74) Representative: Olsson, Jan et al Bjerkéns Patentbyra KBP.O.Box 1274 801 37 Gävle 801 37 Gävle (SE)