POWER CABLE Russian patent published in 2003 - IPC

FIELD: electrical engineering; mechanical design of cables for submersible borehole pumps and other devices. SUBSTANCE: power cable has at least two parallel current-conducting cores coated with polymeric insulating material; each of them is covered with crosswise corrugated metal band sheath with double-ended polymeric coating which is longitudinally placed over insulation with edges of the latter overlapped, and polymeric band overall; conductors covered with mentioned sheath have common external armor of spirally disposed metal bands. Sheath having longitudinally disposed corrugated band with integer polymeric sealed joint ensures reliable sealing and protection of insulation. EFFECT: enhanced cable resistance to environmental impacts. 3 cl 1 dwg