Abstract: An induction voltage transformer which includes an iron core positioned in a grounded metal tank, the iron core having one leg wrapped by an insulating body constructed as a capacitively controlled bushing, and a high voltage body arranged outside of a portion of the insulating body, the high voltage body including successively displaced layers of a high voltage wire winding. A low voltage wire winding is then wrapped around the outermost layer of the high voltage wire winding.

Abstract: A current transformer of the top core type for high voltage application is formed by a column of insulating material supporting a metal housing including an insulating body through which the primary conductor of the transformer passes. A plurality of cores each including a secondary winding of the transformer are enclosed in a grounded metal casing and extend around the central portion of the insulating body to form annular regions between the metal core casing and the metal housing. The dimensions and weight of the top part of the transformer are reduced by utilizing insulated metal rings provided for obtaining a uniform voltage distribution in the annular regions between the core casing and the housing. The insulated metal rings consist of metal foil between plates of insulating material and may completely fill the annular regions.The core casing includes planar end pieces abutting the insulated metal rings.