(19)

(11)

EP 1 719 231 A1

(12)

(43) Date of publication: 08.11.2006 Bulletin 2006/45 (21) Application number: 05708146.5 (22) Date of filing: 01.02.2005

(51) International Patent Classification (IPC):  H02H 7/085(2006.01) H02H 6/00(2006.01) (86) International application number: PCT/FI2005/000066 (87) International publication number: WO 2005/074089 (11.08.2005 Gazette 2005/32)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 02.02.2004 FI 20040154 (71) Applicant: ABB Oy 00380 Helsinki (FI)	(72) Inventors: KUIVALAINEN, Janne FI-65100 Vaasa (FI) ÖSTERBACK, Peter FI-65650 Vaasa (FI) (74) Representative: Äkräs, Tapio Juhani  Kolster Oy Ab, Iso Roobertinkatu 23, P.O. Box 148 00120 Helsinki 00120 Helsinki (FI)