HIGH-VOLTAGE POTENTIAL TRANSFORMER Russian patent published in 2000 - IPC

FIELD: high- and superhigh-voltage instrument transformers. SUBSTANCE: transformer has metal case filled with insulating material and accommodating rectangular magnetic core shielded by electrostatic screens. The latter close, respectively, two side and one bottom yokes of core. Main and auxiliary low-voltage windings are wound on core legs. High-voltage winding is wound on low-voltage main winding and closed with electrostatic screen. The latter has two or more through slits over its generating line. Screen parts are joined together at one slit by means of insulating brace and at other ones, by using metal braces. Screen is connected to line end of winding through metal tube. All these measures prevent impact of radial and axial thrusts on winding. EFFECT: improved reliability of transformer. 1 dwg