(19)

(11)

EP 3 915 175 A1

(12)

(43) Date of publication: 01.12.2021 Bulletin 2021/48 (21) Application number: 19701851.8 (22) Date of filing: 25.01.2019

(51) International Patent Classification (IPC):  H02B 3/00(2006.01) H02B 1/36(2006.01) B66F 9/02(2006.01) (52) Cooperative Patent Classification (CPC): H02B 1/36; H02B 3/00 (86) International application number: PCT/EP2019/051862 (87) International publication number: WO 2020/151834 (30.07.2020 Gazette 2020/31)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: ABB Schweiz AG 5400 Baden (CH)	(72) Inventor: STUDENY, Michal 75301 Hranice (CZ) (74) Representative: Kesselhut, Wolf  Reble & Klose Rechts- und Patentanwälte Konrad-Zuse-Ring 32 68163 Mannheim 68163 Mannheim (DE)