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(11)

EP 0 956 635 A2

(12)

(43) Date of publication: 17.11.1999 Bulletin 1999/46 (21) Application number: 98902363.0 (22) Date of filing: 02.02.1998

(51) International Patent Classification (IPC):  H02K 3/ 51( . ) H02K 3/ 40( . ) H02K 3/ 34( . ) H02K 3/ 50( . ) (86) International application number: PCT/SE1998/000166 (87) International publication number: WO 1998/034326 (06.08.1998 Gazette 1998/31)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB IT LI NL SE (30) Priority: 03.02.1997 SE 19970000355 28.11.1997 SE 19970004426 (71) Applicant: ABB AB 721 83 Västeras (SE)	(72) Inventors: CARSTENSEN, Peter S-141 42 Huddinge (SE) LEIJON, Mats S-723 35 Västeras (SE) (74) Representative: Johansson Webjörn, Ingmari  L.A. Groth & Co KB Patentbyra, P.O. Box 6107 102 32 Stockholm 102 32 Stockholm (SE)