OUTDOOR HIGH-VOLTAGE CURRENT TRANSFORMER Russian patent published in 2000 - IPC

FIELD: design of insulated measuring transformers. SUBSTANCE: device has insulation cylindrical jacket, which is mounted on metal base of transformer by means of half-rings and is made from flexible material with row of concentric ribs. It contains insulation cylindrical column, which is made from hard material with insulation filling. Column carries metal housing, which is mounted flange and is filled with insulation material. It is designed as cylinder with primary winding, which is designed as rectilinear conductor, which is mounted along secondary winding axis. Secondary winding is designed using toroidal magnetic circuits, which are embraced by toroidal electrostatic screen. The screen is mounted at upper end of support metal tube, which is passed through hole in base of metal housing. Tube is mounted coaxially inside insulation cylindrical column and is attached to metal base of transformer. Tube is hollow to pass taps of secondary winding. EFFECT: increased reliability, simplified design and facilitated manufacturing. 1 dwg