(19)

(11)

EP 1 034 547 A2

(12)

(88) Date of publication A3: 10.09.1999 (43) Date of publication: 13.09.2000 Bulletin 2000/37 (21) Application number: 98959335.5 (22) Date of filing: 27.11.1998

(51) International Patent Classification (IPC)7: H01F 27/32, H02B 1/00 (86) International application number: PCT/SE9802/148 (87) International publication number: WO 9933/074 (01.07.1999 Gazette 1999/26)

(84) Designated Contracting States: CH DE DK ES FR GB IT LI Designated Extension States: SI (30) Priority: 28.11.1997 SE 9704455 (71) Applicant: ABB AB 721 83 Västeras (SE)	(72) Inventors: LEIJON, Mats S-723 35 Västeras (SE) WALFRIDSSON, Lars S-723 50 Västeras (SE) (74) Representative: Olsson, Jan et al Bjerkéns Patentbyra KBP.O.Box 1274 801 37 Gävle 801 37 Gävle (SE)