(19)
(11) EP 0 246 820 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.11.1989 Bulletin 1989/45

(43) Date of publication A2:
25.11.1987 Bulletin 1987/48

(21) Application number: 87304324.4

(22) Date of filing: 15.05.1987
(51) International Patent Classification (IPC)4H01H 85/44
(84) Designated Contracting States:
BE CH DE FR GB IT LI SE

(30) Priority: 22.05.1986 US 866013

(71) Applicant: ASEA BROWN BOVERI INC.
Purchase, New York 10577 (US)

(72) Inventor:
  • Book, William James
    Jefferson City Missouri 65101 (US)

(74) Representative: Lück, Gert, Dr. et al
c/o Asea Brown Boveri AG, Abt. TEI - Immaterialgüterrecht, Wiesenstrasse 26
CH-5401 Baden
CH-5401 Baden (CH)


(56) References cited: : 
   
       


    (54) Electrical distribution apparatus having fused draw-out surge arrester


    (57) A pad-mounted electrical distribution transformer (10) including an electrically grounded tank (12), an electrical element in the tank, and a draw-out surge arrester assembly (200) which extends into the tank. The draw-out surge arrester assembly includes a housing (202), and a draw-out device (204) remov­ably disposed in the housing. The draw-out device includes a fuse (292) connected in series with the surge arrester, between the electrical element and grounded tank, with the fuse being sized to isolate the surge arrester from the electri­cal element, should the surge arrester fail to recover properly from a voltage surge.







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