Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1993-02-09
1994-11-29
Ryan, Patrick J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
4283044, 4283084, 4283111, 4283115, 4283137, 428283, 428284, 428285, 428286, 428287, 428288, 428289, 428290, 428291, B32B 702
Patent
active
053689291
ABSTRACT:
A high temperature insulation for liquid-filled transformers. This invention is a composite sheet material composed of a substrate saturated with a thermally stable polymeric resin that provides a micro-porous structure. This structure allows dielectric fluid to saturate the electrical insulation material. The insulation materials have a low moisture absorption, and do not generate water when aged during the life of the transformer. The invention improves transformer life expectancy with a cost effective alternate electrical sheet insulation material. This material has better heat aged electrical properties than cellulose, which is presently the most common insulator for liquid filled transformers.
REFERENCES:
patent: 4410585 (1983-10-01), McLaughlin
Fox Martin H.
Golner Thomas M.
Parker Paul E.
Turpin Robert H.
Ritchie William B.
Ryan Patrick J.
Weisberger Richard C.
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