Manufacturing process for surge arrester module using pre-impregnated composite
AssigneeMcGraw-Edison Company
InventorsMichael M. Ramarge, Alan P. Yerges, David P. Bailey, Roger S. Perkins
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Abstract
An electrical module assembly used in a surge arrester is manufactured by wrapping an electrical module assembly including at least one metal oxide varistor (MOV) disk to which a reinforcing structure including a pre-impregnated epoxy/glass-fiber composite has been applied with shrink film and compacting the wrapped electrical module assembly by heating the shrink film such that the shrink film shrinks and applies a radially compressive force to the electrical module assembly. The wrapped electrical module assembly then is cured at a temperature at which the shrink film no longer applies a compressive force.
Claims20
An apparatus comprising:
- a disk assembly including at least a first MOV disk defining a first surface and a second MOV disk defining a second surface, the first surface in direct contact with the second surface;
- a reinforcing structure applied to at least a portion of one of the first MOV disk and the second MOV disk;
- and
- a film applied to the disk assembly and the reinforcing structure, the film being configured to compress the disk assembly.
An apparatus comprising:
- a disk assembly including at least a first MOV disk and a second MOV disk;
- a reinforcing structure applied to at least a portion of one of the first MOV disk and the second MOV disk;
- and
- a film applied to the disk assembly and the reinforcing structure, the film being configured to compress the disk assembly such that a portion of the first MOV disk and a portion of the second MOV disk are coupled directly together along an axial direction.
A method of making an electrical apparatus, the method comprising:
- placing a first MOV disk and a second MOV disk in face-to-face contact at an non-bonded interface;
- creating a disk assembly by applying a reinforcing structure to a portion of one of the first MOV disk or the second MOV disk;
- applying a film to the disk assembly;
- heating the disk assembly to a first temperature sufficient to cause the reinforcing structure to change to a non-solid phase and to cause the film to shrink;
- and
- heating the disk assembly to a second temperature above a threshold temperature of the film such that the film relaxes and an amount of non-solid phase reinforcing structure entering the non-bonded interface between the first MOV disk and the second MOV disk is reduced.
Dependencies are inferred from the claim text.