1 Conducting cores - single-wire from copper soft wire.
2 Insulation - film-porous-film (three-layer, consisting of solid, porous and solid layers of polyethylene);
3 Pairs - twisted from insulated cores of different colours. Pairs together with strands of water-blocking materials are twisted into five or ten-pair elementary bundles.
4 Core - twisted from elementary bundles of different colours.
5 Belt insulation - made of polyamide, polyethylene, polyethylene terephthalate, polypropylene tapes and tapes of water blocking material.
6 Shield: aluminopolyethylene tape laid lengthwise. A tinned copper wire is laid longitudinally under the screen.
7 Sheath: halogen-free polymer composition.
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