CABLES FOR ELECTRIC POWER TRANSMISSION Russian patent published in 2020 - IPC H01B7/22 

FIELD: electricity.

SUBSTANCE: cable for transmission of electric energy, comprising: at least one first section provided with a plurality of first armour layers having a first breaking strength, said plurality of first armour sleeves are made of a first metal material coated with a first metal protective coating, which thickness is not more than 100 g/m², said first metal material has a first magnetic permeability μ1, at least one second portion provided with a plurality of second armour layers having a second breaking strength, said plurality of second armour sleeves are made from second metal material coated with second metal protective coating, thickness of which is not more than 100 g/m², said second metal material has a second magnetic permeability of μ2 and μ2 ≠ μ1, each of said plurality of first several armour sleeves is connected in longitudinal direction with one of said plurality of multiple second armour sleeves at connection point that has third breaking strength, wherein the third breaking strength is at least more than 80 % of the lower tensile strength from the first tensile strength and the second tensile strength.

EFFECT: disclosed are cables for transmission of electric energy.

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