EXTENDED ELEMENT AND ITS APPLICATION Russian patent published in 2011 - IPC H01B17/32 

FIELD: electricity.

SUBSTANCE: extended element has outer sleeve-shaped rigid insulating cover (1) enveloping high voltage conductor passing in longitudinal direction of the cover, and gap (10) inside the cover at inner wall of the cover, which at least partially envelopes the above conductor and is filled with medium (11) of material with electrical insulation properties. The above medium is formed with electric insulating material containing the cavities which are at least partially filled with gas; at that, material is capable of being extended at increase of its temperature owing to reversible compression of the above cavities and reduction of their volume. Cavities are formed with deformed spheres capable of recovering their shape after deformation at reduction of external compression forces from insulating material. Microspheres are filled with liquid and gas mixture. The above material represents cross-linked gel. Through insulator for transformer or generator, end cable coupling sleeve and high voltage device is made in the form of the above extended element.

EFFECT: preventing electric breakdowns on equipment, housings or other earthed objects.

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