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EP 3 004 832 A1

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(43) Date of publication: 13.04.2016 Bulletin 2016/15 (21) Application number: 13729296.7 (22) Date of filing: 06.06.2013

(51) International Patent Classification (IPC):  G01M 3/32(2006.01) H02B 1/26(2006.01) H02B 13/035(2006.01) H01H 33/56(2006.01) G01N 33/26(2006.01) (86) International application number: PCT/EP2013/061720 (87) International publication number: WO 2014/194958 (11.12.2014 Gazette 2014/50)

(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 (71) Applicant: ABB Technology AG 8050 Zürich (CH)	(72) Inventors: KRAMER, Axel CH-5430 Wettingen (CH) BRÄNDLE, Hubert CH-8102 Oberengstringen (CH) HENCKEN, Kai 79539 Lörrach (DE) PAUL, Thomas Alfred CH-8820 Wädenswil (CH) (74) Representative: ABB Patent Attorneys  C/o ABB Schweiz AG Intellectual Property (CH-LC/IP) Brown Boveri Strasse 6 5400 Baden 5400 Baden (CH)