General Electric Company

Richard K Elton

William R Schultz, Jr

A structure for bleeding off static electric charges includes a pyrolyzed glass fiber layer having resistivity in the range of 200 to 10,000 ohms per square.

Electric charge bleed-off structure using pyrolyzed glass fiber

A semi-conducting pyrolyzed glass fiber layer equalizes the electrical potential on the exterior surface of an insulated conductor when the layer covers the surface. The layer prohibits the development of a corona discharge and bleeds off any electrical charge developed thereon when the layer is electrically coupled to a body having a known potential. The insulated conductor may be windings in a dynamoelectric machine.

Semi-conducting layer for insulated electrical conductors

A process for electrodepositing mica and a water soluble anionic resin binder, such as a modified polyester resin, is disclosed as a means for applying a heavy coating of a high-voltage, mica-bearing electrical insulation onto uninsulated and porous mica tape-insulated portions of electrical connections in dynamoelectric machines. The electrodeposited mica coating is subsequently impregnated with a suitable resin, such as an epoxy or polyester resin, concurrently with the impregnation of other conventional insulations in the machine. Alternatively, deposition and impregnation of the connection insulation can be performed prior to installing the connection into the machine.

Electrodepositing mica on coil connections

Electrodeposited mica in a water soluble anionic resin binder, such as a modified polyester resin, is a means for applying a heavy coating of a high-voltage, mica-bearing electrical insulation onto uninsulated and insulated portions of electrical connections in dynamoelectric machines. The Electrodeposited mica coating is subsequently impregnated with a suitable resin, such as an epoxy or polyester resin, concurrently with the impregnation of other conventional insulations in the machine. Alternatively, deposition and impregnation of the connection insulation can be performed prior to installing the connection into the machine.

Electrodeposited mica on coil bar connections and resulting products

Process for electrodepositing mica on coil or bar connections and

A process for electrodepositing mica and a water soluble anionic resin binder, such as a modified polyester resin, is disclosed as a means for applying a heavy coating of a high-voltage, mica-bearing electrical insulation onto uninsulated and insulated portions of electrical connections in dynamoelectric machines. The electrodeposited mica coating is subsequently impregnated with a suitable resin, such as an epoxy or polyester resin, concurrently with the impregnation of other conventional insulations in the machine. Alternatively, deposition and impregnation of the connection insulation can be performed prior to installing the connection into the machine.

A composition for electrodeposition of an insulating mica coating onto a conducting substrate is disclosed. The composition consists essentially of mica, a water soluble anionic resin binder, an electrolyte and a polar solvent.

Formulation for electrodeposition of mica

A semiconductive material which is formed by impregnating glass fibers or glass fabric with an organic material which is pyrolyzed in the substantial absence of oxygen and at a temperature which is above the pyrolysis temperature of the organic material, but below the boiling point or sublimation temperature of the organic material. By such pyrolysis, the organic compound is converted to substantially pure carbon deposited on the glass fibers which impart to the glass fibers semiconductive characteristics.

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Altamont, NY, United States of America

Richard K Elton