High voltage transformer package

Claim 1

In a high voltage transformer package comprising: a metal case, a transformer coil and core assembly fixedly positioned within said case, a dielectric liquid media within said sealed case with said transformer assembly immersed therein, and terminals electrically connected to said transformer coils and electrically insulatively and sealably projecting through the walls of said case, the improvement wherein: said case comprises thin-wall sheet steel in the form of a closed box having longitudinally opposed end walls, laterally opposed sidewalls, and a bottom wall, said walls having their confronting edges welded together, and a cover welded about its edges to the top edges of said case sidewalls and said end walls, a plurality of reinforcing members comprising integral angled base and fin portions mechanically fixed by their base portions at positions internally of the case corners to at least some of the exterior walls of said box to resist internal dielectric liquid pressure loading of the thin-wall sheet steel case wall during transformer operation under varying ambient conditions; and wherein at least some of said reinforcing members are formed of sheet metal which is softer and of higher thermal conductivity than the thin-wall sheet steel forming said case box and cover to facilitate heat dissipation of said transformer package.