(19)
(11) EP 1 715 495 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
28.09.2011 Bulletin 2011/39

(43) Date of publication A2:
25.10.2006 Bulletin 2006/43

(21) Application number: 06075810.9

(22) Date of filing: 05.04.2006
(51) International Patent Classification (IPC): 
H01F 27/08(2006.01)
H01F 27/32(2006.01)
 H01F 27/28(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 21.04.2005 IT MI20050711

(71) Applicant: TMC Italia S.p.A.
21052 Busto Arsizio (VA) (IT)

(72) Inventor:
  • Vaccari, Carlo, TMC Italia S.p.A.
    20020 Bienate di Magnago (Milano) (IT)

(74) Representative: Colombo, Stefano Paolo et al
MARCHI & PARTNERS S.r.l. Via G.B. Pirelli, 19
20124 Milano
20124 Milano (IT)

   


(54) Resin-insulated dry transformer


(57) A resin-insulated dry transformer is described, said transformer comprising: a magnetic core (20); an electrically conductive primary winding; and an electrically conductive secondary winding. The secondary winding is electrically insulated from the primary winding and is linked to the primary winding by means of the magnetic core. The secondary winding comprises a cooling channel (33) with a number of spacers (10,10'). According to the invention, the spacers are made, at least partially, of an electrically conductive material.







Search report