Power transmission cable

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 13/02 (2006.01) H01B 7/28 (2006.01) H01B 7/29 (2006.01)

Patent

CA 2673032

A power transmission cable comprising at least one power conductor, an insulating layer surrounding said conductor to form at least one insulated conductor, a flame-retardant halogen free protective sheath provided in a radially external position with respect to said insulated conductor, wherein said sheath has an inner and an outer layer in contact one another, said inner layer has a thickness at least equal to a thickness of said outer layer, the inner layer comprises a polymer material having a glass transition temperature equal to or lower than -30°C, and the outer layer comprises a mud resistant polymer material.

L'invention concerne un câble de transport d'électricité comprenant au moins un conducteur électrique, une couche isolante entourant ledit conducteur pour former au moins un conducteur isolé, une gaine de protection ignifuge dépourvue d'halogène fournie dans une position radialement externe relativement au dit conducteur isolé, ladite gaine ayant une couche intérieure et une couche extérieure en contact l'une avec l'autre, ladite couche intérieure a une épaisseur au moins égale à une épaisseur de ladite couche extérieure, la couche intérieure comprend un matériau polymère ayant une température de transition vitreuse inférieure ou égale à -30°C, et la couche extérieure comprend un matériau polymère résistant à la boue.

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