(19)
(11) EP 0 886 287 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.09.1999 Bulletin 1999/38

(43) Date of publication A2:
23.12.1998 Bulletin 1998/52

(21) Application number: 98660046.8

(22) Date of filing: 18.05.1998
(51) International Patent Classification (IPC)6: H01F 27/40, H01F 27/29
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 19.05.1997 FI 972131

(71) Applicant: ABB Transmit Oy
65320 Vaasa (FI)

(72) Inventors:
  • Virtanen, Vesa
    65320 Vaasa (FI)
  • Tiitola, Tapani
    65320 Vaasa (FI)
  • Jokinen, Jorma
    66440 Tervajoki (FI)
  • Virtanen, Esa
    65100 Vaasa (FI)

(74) Representative: Peltonen, Antti Sakari et al
Oy Kolster Ab, Iso Roobertinkatu 23, P.O. Box 148
00121 Helsinki
00121 Helsinki (FI)

   


(54) Bushing insulator


(57) A bushing insulator or other corresponding component, comprising an end-to-end primary current conductor (1) and a frame (2) cast of cast resin (3) around the primary current conductor. In accordance with the invention, the primary current conductor (1) comprises a fuse (4) which is at least partly left within the cast resin (3) when casting the frame (2). The part of the fuse (4) remaining within the cast resin (3) is encapsulated in a layer (6) of rubber or other corresponding material which in turn is encapsulated in a semiconducting layer (5).






Search report