(19)
(11) EP 0 947 041 A2

(12)

(43) Date of publication:
06.10.1999 Bulletin 1999/40

(21) Application number: 97951373.0

(22) Date of filing: 17.12.1997
(51) International Patent Classification (IPC): 
H01H( . )
H01T 2/ 00( . )
H02H 9/ 02( . )
 H02H 9/ 06( . )
H02H 3/ 02( . )
H02H 9/ 04( . )
(86) International application number:
PCT/SE1997/002131
(87) International publication number:
WO 1998/029931 (09.07.1998 Gazette 1998/27)
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

(30) Priority: 17.12.1996 SE 19960004631

(71) Applicant: ASEA BROWN BOVERI AB
721 83 Västeras (SE)

(72) Inventors:
  • BERGQVIST, Mikael
    S-756 45 Uppsala (SE)
  • BERNHOFF, Hans
    S-720 02 Västeras (SE)
  • EKBERG, Mats
    S-722 42 Västeras (SE)
  • FOGELBERG, Thomas
    S-771 35 Ludvika (SE)
  • ISBERG, Jan
    S-722 14 Västeras (SE)
  • LEIJON, Mats
    S-723 35 Västeras (SE)
  • MING, Li
    S-723 41 Västeras (SE)
  • SUNESSON, Anders
    S-232 51 Akarp (SE)
  • WINDMAR, Dan
    S-744 95 Vittinge (SE)
  • RUSSBERG, Gunnar
    S-724 66 Västera s (SE)

(74) Representative: Bjerkén, Jarl Hakan, et al 
Bjerkéns Patentbyra KB P.O.Box 1274
801 37 Gävle
801 37 Gävle (SE)

   


(54) A DEVICE AND A METHOD FOR PROTECTING AN OBJECT AGAINST FAULT RELATED OVER-CURRENTS