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Standart: IEC 60840/VDE 0276-632
Description: Cu / Al conductors • XLPE insulation • Cu screen • PE sheath
Application:
The single-core cables are designed for transfer and distribution of electrical power with nominal voltage Uo/U 26/45/52, 38/66/72.5 kV and frequency 50 Hz. They are suitable for fixed assembly and indoor installation, in cable ducts and conduits, over shelves and grilles in water and directly underground in ditch and outdoor under shelter.
Features:
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Cable construction |
Technical data |
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| Construction | According to IEC 60840/VDE 0276-632 | Conductor resistance | According to IEC60228 class 2 and VDE 0295 class 2 |
| Conductor | Сu and Al stranded compacted wires according to IEC 60228 cl.2 and VDE 0295 cl.2 | Operating temperature | 90° C continuous operation |
| Short circuit temperature | 250° C ( 5 sec.) | ||
| Inner semi- conductive layer | semi-conductive XLPE compound | Overload temperature | 130° C /100h per year max./ |
| Insulation | XLPE compound | ||
| Outer semi- conductive layer | semi-conductive XLPE compound | Nominal voltage Uo/U | 26/45 kV 38/66 kV |
| Highest system voltage Uo/U, no more than | 52 kV; 72.5 kV | ||
| Water resisting element | Layer of semi-conductive water absorbing tapes | Test voltage AC (») - 30 min |
26/45 kV 38/66 кV 65 kV 90 kV |
| Metal screen | Cu wires concentrically laid and one contact of Cu tape with thickness of 0.1mm | Bending radius | 15 x Dcable |
| Water resisting element | -I option – water absorbing insulating tape -II option – water absorbing powder and a layer of plastic tape |
Level of partial discharge at 2*Uo | max. 5 pC |
| Sheath | PE compound | Temperature of laying | no less than -5° C |
| Color | Black | Temperature of exploitation | -30° C to 50° C |
| Tests | according to IEC 60840 according to VDE 0276-632 | ||