Standart: IEC 60 502-2 , IEC 60 332-3
Description: Cu / Al conductors • XLPE insulation • Cu screen • PVC sheath–flame retardant
The three-core cables flame retardant with insulation of cross-linked polyethylene (XLPE) are designed for transfer and distribution of electrical power with nominal voltage Uo/U 6/10 kV and frequency 50 Hz. The cables are manufactured with sheaths of flame retardant materials. They are suitable for use in distribution installations, electric power stations and substations for fixed indoor assembly in cable ducts and conduits, over shelves and grilles. They should not be laid directly underground or in water. The cables should not be laid in or near nuclear stations.
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Cable construction |
Technical data |
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| Construction | According to IEC 60502-2 and IEC 60332-3 | Conductor resistance at 20° C | According to IEC60228 |
| Conductor | Сu and Al stranded compacted wiresto IEC 60228 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 and semi-conductive tape | Nominal voltage Uo/U | 6/10 kV |
| Highest system voltage Uo/U, no more than | 6/10 kV 12 kV |
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| Test voltage AC (») - 5 min DC (=) - 15 min |
6/10 kV 21 kV 67 kV |
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| Metal screen | -I option - Cu tapes laid with overlap over each phase -II option - Cu wires laid concentrically |
Bending radius | 15 x Dcable |
| Cable assembly | Three insulated and screened phases are twisted with fillings and tape support | Temperature of laying | no less than -5° C |
| Inner sheath | I –option - fillings and sheat -exstruded PVC compound flame retardant- kat A II-option - fillings and tapes- kat B and C |
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| Sheath | PVC compound flame retardant | Temperature of exploitation | -30° C to 50° C |
| Color | black | Tests-flame retardant | IEC 60 502 IEC 60332-3 Kat A - 7l/m Kat B(3.5l/m)and C(1.5l/m) |