(19)
(11) EP 2 443 641 A1

(12)

(43) Date of publication:
25.04.2012 Bulletin 2012/17

(21) Application number: 10725719.8

(22) Date of filing: 17.06.2010
(51) International Patent Classification (IPC): 
H01H 9/00(2006.01)
(86) International application number:
PCT/EP2010/058572
(87) International publication number:
WO 2010/146131 (23.12.2010 Gazette 2010/51)
(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 SE SI SK SM TR

(30) Priority: 18.06.2009 EP 09163129

(71) Applicant: ABB Technology Ltd
8050 Zürich (CH)

(72) Inventors:
  • ANDERSSON, Gunnar
    S-770 14 Nyhammar (SE)
  • STENESTAM, Bengt-Olof
    S-771 42 Ludvika (SE)

   


(54) METHOD AND DEVICE FOR DETECTING FAILURE OF A VACUUM INTERRUPTER OF AN ON LOAD TAP CHANGER