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Standart: IEC 60502-2

Description: Cu / Al conductors • XLPE insulation • Cu screen • Armour st. tapes • PVC sheath

Application:

The three-core cables with insulation of cross-linked polyethylene (XLPE) are designed for transfer and distribution of electrical power with nominal voltage Uo/U 6/10; 12/20; 18/30 kV and frequency 50 Hz in urban and district electrical networks and for electrical supply of transformer’s substations, small and medium industrial plants. They are suitable for use in distribution installations, electric power stations and industrial systems. The cables are for fixed assembly in lines with unlimited difference levels, indoor installations, in cable ducts, conduits and shafts, over shelves and grills directly underground in ditch and outdoor shelter.

Features:

 

 

Cable construction

Technical data
Construction According to IEC 60502-2 Conductor resistance According to BDS904 (IEC60228) class 2
Conductor Сu and Al stranded compacted, according to IEC 60228 class 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 6/10; 12/20; 18/30 kV
Highest system voltage Uo/U, no more than 6/10; 12/20; 18/30 kV
12kV; 24kV; 36kV
Test voltage
AC (») - 5 min
DC (=) - 15 min		 6/10; 12/20; 18/30kV
21kV; 42kV; 63kV
67kV; 134kV; 201kV   
Metal screen over each phase Metal screen -I option - Cu tapes
laid with overlap over each phase
-II option - Cu wires laid concentrically		 Bending radius
15 x Dcable
Level of partial discharge at 2*Uo max. 5 pC
Cable assembly Three insulated and screened phases with longitudinal water-blocking element are twisted in three core cable Temperature of laying no less than -5° C
Inner sheath PVC compound
Armour two steel tapes or two steel galvanized tapes Temperature of exploitation -30° C to 50° C
Sheath PVC compound Tests-longitudinal water-blocking according to IEC 60502-2 or DIN VDE 0276-620
Color red Force of strain in laying N max. Al cores - 30*n*S core
Cu cores - 50*n*S core,
-n-number of cores and -S-nominal cross section of cores in mm

 

 

 

 

 

 

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