High voltage cables 64-110 kV. Brand
Standard
IEC 60840-2022
Main design elements
1. Round stranded compacted conductor:
- Material
Aluminum (AI), Copper (Cu)
Cross-sectional area:
Aluminum 150-2000 mm2
Copper 150-2000 mm2
2. Conductor screen:
-extruded conductive peroxide-crosslinked polyethylene composition.
3. Insulation:
-peroxide-crosslinked polyethylene (Пв)
4. Insulation screen:
-extruded electrically conductive peroxide-crosslinked polyethylene composition
5. Separation layer:
-For types without index "г" - wrapping with tapes made of conductive paper or conductive cloth;
-For with the index "г", "гж", "2гж" and "2г" types -with conductive water-blocking covered tape
6. Metallic screen - copper wire with copper tape
- cross-section not less than 35 mm2
* Note: The screen cross-section is selected depending on the short-circuit currents, which must be calculated according to the conditions of laying the cable line. It is possible to apply a screen made of copper wires in two layers
7. Separation layer:
-for cables without index «г» - cable paper or plastic tape made of polyvinyl chloride plastic with an overlap
-for cables without index «г», «гж» - water-blocking tape
-for cables without index «2г», «2гж» - conductive water-blocking tape
8. Separation layer of alumopolymer tape (for cables with indexes «2г», «2гж»)
9. Outer sheath:
-Polyethylene (П);
-Reinforced polyethylene (Пу);
-PVC (В);
-Flame retardant PVC (В нг(А))
-Low smoke Flame retardant PVC (В нг(А)-LS
-Halogen-free compound (П нг( )-HF) А ;