Method of making insulated electrical apparatus
Abstract
Abstract LAYERS OF FIBROUS INSULATION ARE DISPOSED BETWEEN LAYERS OF CONDUCTORS TO PROVIDE AN ELECTRICAL COIL ASSEMBLY. THE ASSEMBLY IS HEATED OT DRIVE OFF MOISTURE. THE DRIED COL IS IMPREGNATED WITH AN INSULATING OIL. EXCESS OIL IS REMOVED, MOST CONVENIENTLY BY HEATING THE COIL TO AN ELEVATED TEMPERATURE. THE ASSEMBLY IS COVERED WITH A LIUQID EPOXY RESIN AND HEATED TO FROM A SOLIDIFIED RESINOUS JACKET. THE JACKET PREVENTS THE ESCAPE OF THE INSULATING COIL IN THE FIBROUS INSULATION. IN THE COMPLETED ASSEMBLY, THE MULTIPLE LAYERS OF INSULATION, DISPOSED BETWEEN CONDUCTOR LAYERS, RETAIN THE INSULATING OIL AND PROVIDE HIGH DIELECTRIC STRENGTH, HIGH CORONA STARTING LEVELS AND LOW DIELECTRIC LOSSES BETWEEN THE CONDUCTOR TURNS.
Inventors
- 👤 Tadeusz W Kolator
Bibliographic Details
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