FIELD: electrical engineering. SUBSTANCE: metal flat strip is profiled into tubular sheath, current-carrying conductors are put into it, edges or tubular sheath are bonded. Gap between conductors and sheath is filled with powder mineral insulation. Manufactured billet is deformed plastically and corrugated. Depth of corrugation and their spacing are fabricated equal to 10-30% of biggest outer diameter of cable. After this manufactured billet is treated with heat. EFFECT: facilitated manufacture, improved insulating properties of cable.
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