Dean C. Westervelt - Acme PA Robert E. Pierce - Abingdon VA
Assignee:
Westinghouse Electric Corporation - Pittsburgh PA
International Classification:
B05B 502
US Classification:
427 32
Abstract:
A build control is disclosed, for controlling the thickness of a coating on different sides of an elongated member such as a wire. The build control is a tube which is positioned around the wire as the wire passes through a fluidized powder. The end of the tube which is in the fluidized powder is notched so that the build of powder on each of the sides of the elongated member is more or less than would otherwise result.
Process For Electrophoretically Forming An Imide Coating On Wire
Nancy W. Carlson - Murrysville PA Dean C. Westervelt - Acme PA Luciano C. Scala - Murrysville PA
Assignee:
Westinghouse Electric Corp. - Pittsburgh PA
International Classification:
C25D 1306 C25D 1310 C25D 1316
US Classification:
204181R
Abstract:
An imide containing polymeric coating is electrophoretically formed on wire from an emulsion. The emulsion contains a polymer, an organic aprotic solvent for the polymer, an amine, and a polar precipitant in which the polymer is insoluble. The wire is passed through a conductive tube immersed in the solvent while a D. C. current is applied between the tube and the wire. The polymer coating on the wire is then cured.
Apparatus For Making Electrical Coils Using Patterned Dry Resin Coated Sheet Insulation
Edward J. Croop - Pittsburgh PA Howard E. Saunders - Pittsburgh PA Dean C. Westervelt - Acme PA
Assignee:
Westinghouse Electric Corp. - Pittsburgh PA
International Classification:
B05B 502 B05B 1504 B05D 106
US Classification:
118301
Abstract:
A porous, electrical insulating adhesive substrate is made by (A) electrostatically coating a flexible sheet material with heat reactive adhesive resin particles, having an average particle size of between about 1 micron to 2,000 microns, the adhesive particles are applied in a predetermined pattern on the sheet covering from about 10 percent to 90 percent of the sheet material area, the area between the resin pattern not being coated; and then (B) heating the patterned coated sheet material between about 65. degree. C to 250. degree. C, forming a discontinuous, 0. 25 mil to 25 mil (0. 006 mm to 0. 635 mm) thick, dry coating pattern of heat reactive adhesive particles bonded to the sheet material, said heat reactive adhesive coating covering from about 10 percent to 90 percent of the sheet material area; the patterned coated sheet may then be inserted as an oil permeable layer insulation between high voltage windings and low voltage windings and between layers of high and low voltage windings in a wound coil assembly, after which the assembly can be heated at a temperature and for a time effective to securely bond the winding layers together, and thus provide a porous, oil permeable, bonded transformer coil assembly.
Method Of Making A Void-Free Non-Cellulose Electrical Winding
Dean C. Westervelt - Acme PA Thomas M. Burke - Whitehall PA
Assignee:
Westinghouse Electric Corp. - Pittsburgh PA
International Classification:
H01F 306
US Classification:
29605
Abstract:
Methods of constructing a void-free, cellulose-free electrical winding insulated with a solid resinous insulation. The method includes forming a plurality of conductor turns on a substrate, with each conductor turn being immersed in liquid resinous insulation as it is formed, to provide a void-free intermediate structure. The void-free aspect of the intermediate structure is maintained up to and including the final step of the method by building solid insulation, thin layer upon thin layer, from the liquid resinous insulation, while the conductor turns are being formed, with the solid insulation, as it is formed, providing a solid substrate for the continued application of liquid resinous insulation and subsequent conductor turns of the winding.
Dean C. Westervelt - Acme PA Luciano C. Scala - Murrysville PA Howard E. Saunders - Pittsburgh PA David F. Ciliberti - Murrysville PA
Assignee:
Westinghouse Electric Corporation - Pittsburgh PA
International Classification:
B08B 310 B08B 312 C25F 100
US Classification:
134 1
Abstract:
Wire is cleaned by passing it through an electrolytic cleaner then through an ultrasonic rinse. The electrolytic cleaner comprises a graphite tube through which the wire passes, an alkaline aqueous solution between the wire and the graphite tube, and an electric current, at least half D. C. , between the wire and the graphite tube.
Method Of Making Patterned Dry Resin Coated Sheet Insulation
Edward J. Croop - Pittsburgh PA Howard E. Saunders - Pittsburgh PA Dean C. Westervelt - Acme PA
Assignee:
Westinghouse Electric Corporation - Pittsburgh PA
International Classification:
B05D 106
US Classification:
427 21
Abstract:
A porous, electrical insulating adhesive substrate is made by (A) electrostatically coating a flexible sheet material with heat reactive adhesive resin particles, having an average particle size of between about 1 micron to 2,000 microns, the adhesive particles are applied in a predetermined pattern on the sheet covering from about 10 percent to 90 percent of the sheet material area, the area between the resin pattern not being patterned and then (B) heating the patterened coated sheet material between about 65. degree. C to 250. degree. C, forming a discontinuous, 0. 25 mil to 25 mil (0. 006 mm to 0. 635 mm) thick, dry coating pattern of heat reactive adhesive particles bonded to the sheet material, said heat reactive adhesive coating covering from about 10 percent to 90 percent of the sheet material area; the patterned coated sheet may then be inserted as an oil permeable layer insulation between high voltage windings and low voltage windings and between layers of high and low voltage windings in a wound coil assembly, after which the assembly can be heated at a temperature and for a time effective to securely bond the winding layers together, and thus provide a porous, oil permeable, bonded transformer coil assembly.
Electrical Insulation, Manufacturing Method, And Use Thereof
Edward J. Croop - Pittsburg PA Thomas S. Snyder - Oakmont PA Dean C. Westervelt - Acme PA
Assignee:
AEG Westinghouse Transportation Systems, Inc. - Pittsburgh PA
International Classification:
A47G 1922
US Classification:
428 345
Abstract:
Electrical insulation which has good dielectric strength, good radiation resistance, and good thermal resistance at temperatures of up to 500. degree. C. and, preferably up to 1700. degree. C. , includes a substrate which is flexible, has the form of a filament, sheet, wrapper, tape or sleeve, and consists essentially of inorganic materials selected from the group consisting of inorganic fibers and metals, metalloids, or alloys; and at least one layer of at least one oxide of an alkoxide-forming element provided on the substrate to impregnate and/or coat same. The insulation is prepared by a process including applying a solution containing an alkoxy gel polymer, optionally additionally containing at least one inorganic material in finely divided form, to the substrate to provide a treated substrate useful as a preform when allowed to set under ambient conditions. The preform is applied to a part by, for example, wrapping, and is heated to pyrolyze the alkoxy gel polymer to its oxide and provide electrical insulation consisting essentially of inorganic materials. The application and pyrolysis steps may be repeated to build up the thickness of the at least one oxide.
High Voltage Capability Electrical Coils Insulated With Materials Containing Sf.sub.6 Gas
Thomas J. Lanoue - Muncie IN Clarence L. Zeise - Penn Township, Allegheny County PA Loren Wagenaar - Muncie IN Dean C. Westervelt - Acme PA
Assignee:
The United States of America as represented by the United States Department of Energy - Washington DC
International Classification:
H01F 2702
US Classification:
336 84R
Abstract:
A coil is made having a plurality of layers of adjacent metal conductor windings subject to voltage stress, where the windings have insulation therebetween containing a small number of minute disposed throughout its cross-section, where the voids are voids filled with SF. sub. 6 gas to substitute for air or other gaseous materials in from about 60% to about 95% of the cross-sectional void volume in the insulation, thus incorporating an amount of SF. sub. 6 gas in the cross-section of the insulation effective to substantially increase corona inception voltages.
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