公开(公告)号：CA2769458A1

公开(公告)日：2011-02-03

申请号：CA2769458

申请日：2010-07-09

Applicant: ABB TECHNOLOGY AG

Inventor： JOHSON CHARLES W ,  KERN JOEL A

IPC: H01F27/02 ,  H01F30/06

Abstract: A distribution transformer (10) adapted for mounting to a utility pole. The distribution transformer includes a plurality of coil assemblies (12 ) mounted to a ferromagnetic core (14). Each of the coil assemblies (12) includes a low voltage coil (30) and a high voltage coil (32). The low voltage coils (30) are connected together and the high voltage coils (32) are connected together. An encasement comprised of an insulating resin encapsulates the core (14) and th coil assemblies (12). The encasement includes a substantially annular body (18) and a pair of high voltage bushings (22) extending outwardly from the body. Terminals (40) extend from the high voltage bushings (22) and are connected to the high voltage coils (32).

公开(公告)号：CA2859655A1

公开(公告)日：2013-06-27

申请号：CA2859655

申请日：2012-12-18

Applicant: ABB TECHNOLOGY AG

Inventor： OUTTEN SAMUEL S ,  HARTMANN THOMAS A ,  KERN JOEL A ,  TERRELL JARRETT ,  NEAL CHESTER M

IPC: H01F27/08 ,  H01F30/12

Abstract: A three-phase non-linear transformer is cooled by first (30) and second fans (40). The first fan (30) is attached to the first core clamps (12) of the transformer using a first mounting structure (15). The second fan (40) is attached to the second core clamps (24) of the transformer using a second mounting structure (17). The first fan is positioned so that air is directed toward a central passage of the core. The second fan is positioned so that air is drawn through the central passage of the core. The first fan circulates air through a central passage in the transformer core and channels that exist between adjacent coil assemblies. The second fan draws air through the central passage and channels and further expels the air into the surrounding environment. The first and second fans are controlled by a control panel through which they are run automatically or manually.