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Uo/U - 6/10 kV, 12/20, 18/30kV, IEC 60502-2 / DIN VDE 0276-620
The single-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.
Cable construction
According to IEC 60502-2
DIN VDE 0276-620
Cu and Al stranded compacted, according to IEC 60228 class 2 and VDE 0295 class 2
Inner semi-conductive layer
semi-conductive XLPE compound
XLPE compound
Outer semi-conductive layer
semi-conductive XLPE compound
Water resisting element
Layer of semi-conductive water absorbing tapes
Metal screen
Cu wires concentrically laid and one contact of Cu tape with thickness of 0.1mm.
Water resisting element
- water absorbing powder
Al foil with copolymer protection from moisture ingress
PE compound
type ST7 according to IEC 60502-2 type DMP 2 according to VDE 0276
Technical data
Conductor resistance at 20°C
According to IEC60228 class 2 and VDE 0295 class 2
Operating temperature
90°C continuous operation
Overload temperature
130°C  /100h per year max./
Short circuit temperature
250°C    /5 s max./
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 Uo/U
AC (≈) - 5 min
DC (=) - 15 min
6/10;    12/20; 18/30kV 21kV;   42kV;    63kV 67kV; 134kV; 201kV
Level of partial discharge
at 2*Uo
Bending radius, min
Temperature of laying
max. 5 pC / 2 pC
15x D cable
no less than - 20°C
Temperature of exploitation Tests
-30 to 50°C according to IEC 60502-2 or DIN VDE 0276-620
Force of strain in laying N max.
Al cores - 30*n*S core Cu cores - 50*n*S core
Tests - water penetration in the region of metallic screen
N is number of cores and S is cross section of cores in mm
IEC 60502-2 annex F