(19)

(11)

EP 0 902 955 A1

(12)

(43) Date of publication: 24.03.1999 Bulletin 1999/12 (21) Application number: 97924458.0 (22) Date of filing: 26.05.1997

(51) International Patent Classification (IPC):  H01H 1/ 42( . ) (86) International application number: PCT/SE1997/000867 (87) International publication number: WO 1997/045850 (04.12.1997 Gazette 1997/52)

(84) Designated Contracting States: DE FI FR GB IT NL SE (30) Priority: 24.05.1996 SE 19960002069 (71) Applicant: ASEA BROWN BOVERI AB 721 83 Västeras (SE)	(72) Inventors: LÖNNERMO, Thomas S-719 94 Vintrosa (SE) NYGREN, Jan-Anders S-722 22 Västeras (SE) VALDEMARSSON, Stefan S-725 97 Västeras (SE)