High temperature insulation for liquid-filled transformers

Details High temperature insulation for liquid-filled transformers High temperature insulation for liquid-filled transformers

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

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