HIGH VOLTAGE ISOLATION SYSTEM Russian patent published in 2006 - IPC H01B12/00 

FIELD: engineering of high voltage isolation system, useable at low temperature.

SUBSTANCE: high voltage isolation system aside from cooling liquid 3 contains solid isolator 2 on basis of cellulose base fabric 20. Solid isolator 2 is utilized primarily in form of pressed sheets and saturated with polymer resin. At 77K it has high field strength with partial discharges, and also its thermal expansion coefficient is optimally matched with thermal expansion coefficient of ceramic high temperature superconductors. Pressed sheets may be deformed in dry state, in particular, as frames for coils, or as an alternative may be composed with cotton fabrics into laminates of arbitrary thickness. Into base fabric or intermediate layer it is possible to add: carbon in form of filaments or fabrics, glass filaments in form of filaments or fabrics. Method for manufacturing system for high voltage insulation of electric conductors includes deforming base fabric in dry state, saturating it with polymer resin and dipping solid isolator into cooling means. Deformed pressed sheet forms a frame of coil, onto which at least one winding of superconductor is wound, then the frame and winding are saturated jointly.

EFFECT: increased efficiency.

2 cl, 3 dwg