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US 10,096,398 B2Granted
Electrical cable that is resistant to partial discharges
AssigneeNexans
InventorsHakim Janah, Thiery Daumand, Virak Phul, Patrick Rybski, Pascal Clouet, Wilfried Lecluse, Rui Manuel Da Silva
Life of this patent
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Abstract
An electrical cable (1) is provided having (1) a conductive element (2), a first layer (3) having polyimide (PI) surrounding said conductive element (2), a second fluorinated layer (4) having at least one fluorinated compound, surrounding the first layer, and optionally at least one fluorinated semiconductor layer having at least one fluorinated compound, where the total thickness of the assembly of fluorinated layers is at least 0.4 mm.
Claims15
Electrical cable comprising:
- a conductive element having a nominal cross section in the range of 0.95 mm2 to 70 mm2;
- a first layer comprising polyimide (PI) surrounding said conductive element;
- a second fluorinated layer of polytetrafluoroethylene (PTFE) surrounding said first layer;
- and
- optionally at least one fluorinated semiconductor layer comprising at least one fluorinated compound,
- wherein the total thickness of the assembly of PTFE layers is at least 0.4 mm, and that the thickness ratio of the fluorinated layer(s) to the PI layer ranges from 4 to 22, and
- wherein the combination of the materials selected for said first layer of PI, said second fluorinated layer, and optionally at least one fluorinated semiconductor layer and the nominal cross section in the range of 0.95 mm2 to 70 mm2 of said conductive element are such that the combined insulations layers results provide said cable with a partial discharge inception voltage above 800 volts.
4 more elements
Dependencies are inferred from the claim text.