1. Current-carrying conductor is aluminum or copper, stranded, round-shaped, compacted conductor, corresponds to class 2 as per GOST 22483-77.
2. Conductor screen is applied as an extrusion of electrically conductive peroxide cross-linked polyethylene composition.
3. Insulation made of peroxide cross-linked polyethylene.
4. Insulation screen is applied as an extrusion of electrically conductive peroxide cross-linked polyethylene composition.
5. Separating layer:
Tape made of semiconducting cloth for cables without “г” index.
Tape made of semiconducting water-blocking cloth for cables with “г” index.
6. Screen made of copper wires connected by means of copper tape:
With section of 95 mm2 for cables with conductor section of 185-240mm2,
With section of 120 mm2 for cables with conductor section of 300-500mm2,
With section of 185 mm2 for cables with conductor section of 800-2500mm2.
Note: Screen section is selected depending on short-circuit currents which shall be calculated according to field cable installation conditions. Screen section may be increased on order-basis.
7. Separating layer:
Tape made of semiconducting cloth for cables without “г” index.
Tape made of semiconducting water-blocking cloth for cables with “г” index.
8. Layer made of alumopolymer tape for cables with “г” index.
9. Sheath made of high-density polyethylene (for “у” index cables made of thickened polyethylene).