CURRENT TRANSFORMER FOR EXTERNAL APPLIANCE Russian patent published in 1998 - IPC

FIELD: electrical engineering. SUBSTANCE: device has porcelain cap 1 which is tightly connected to flanges 2 and 3 and is filled by insulating gas. Ring upper flange 3 carries metal jacket 4 with primary and secondary windings which are located in toroidal shield 11 which is tightly connected to adjustment unit 12 of secondary windings unit. Lower piece of shield 11 is recessed in porcelain cap. Adjustment unit 12 has adjusting cantilever with cuts for clamping members. Cantilever is welded to shield 11 along ruling line. alternations in position of shield 11 in three dimensions is achieved by adjusting unit 12. Inclination of axis of shield 11 is controlled by alternation of level of vertical movement of members. Unit 12 provides high-precision relative centering of primary and secondary windings 6 and 9 for arbitrary tolerance ranges of mated members. This results in field uniformity and high electric strength of main insulation of transformer. EFFECT: decreased size of transformer, increased functional reliability. 2 cl, 3 dwg