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Cu/XLPE/CWS/PE Al/XLPE/CWS/PE

Uo/U - 6.35/11 kV; 19/33 kV BS 7870-4.10
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 6.35/11 and 19/33 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
Construction
According to BS 7870-4.10
Conductor
 
  
Cu and Al stranded compacted,
according to IEC 60228 class 2
and BS 6360
Inner semi-
conductive layer
 semi-conductive XLPE compound
Insulation
XLPE compound
Outer semi-
conductive layer
 semi-conductive XLPE compound
Metal screen
 
  
Cu wires concentrically laid and
one contact of Cu tape with thickness of 0.1mm.
Separating layer
Layer of plastic tape
Sheath
 
PE compound type MDPE
according to BS 7870
Color
 
For 11kV - Red
For 33kV - Black
Technical data
Conductor resistance at 20°C
According to IEC60228
class 2 and BS 6360
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:
6.35/11kV 19/33kV
Highest system voltage Uo/U, no more than
12kV 36kV
Test voltage AC (≈) - 15 min
25.4kV 76kV
Level of partial discharge
at 2*Uo
max. 10 pC
 
 
Bending radius, min
15x D cable
Temperature of laying
no less than -5°C
Temperature of exploitation
 -30 to 50°C
Tests
according to BS 7870-4.10
Force of strain in laying N ,max.
 
 
 
Al cores - 30*n*S core
Cu cores - 50*n*S core
where:
n- number of cores and
-S-cross-section of conductors in mm
 
Construction data
Cu/XLPE/CWS/PE and  Al/XLPE/CWS/PE   6.35/11; 19/33 kV 
Number of conduc­tors and nominal cross section
Thic­kness of insulation
Thic­kness of sheath
Nominal
cross
section of
screen
Cable diameter approx.
 Cu/XLPE/CWS/PE
Al/XLPE/CWS/PE
Mass of
Cu approx.
Mass of
cable
approx.
Mass of
Al approx.
Mass of
Cu approx.
Mass of
cable
approx.
min
max
Nxmm2
mm
mm
 mm2
mm
mm
kg/km
kg/km
kg/km     kg/km
kg/km
6.35/11 kV
 
 
 
 
 
 
 
 
 
 
Cu/XLPE/CWS/PE
 
 
 
 
 
 
 
 
 
1x240rm /35
3,4
2.0
35
36.2
36.6
2548
3268
 
 
 
1x300rm /35 1x400rm /35
3,4
3,4
2,1
2.2
35
35
38.6 41.1
39.1 42.4
3078 3835
3868 4717
 
 
 
1x500 rm /35 Al/XLPE/CWS/PE
3,4
2,3
35
44.5
45.7
4805
5792
 
 
 
1x70rm /35
3,4
1.7
35
27
27
 
 
190
363
999
1x95rm /35
3,4
1.8
35
28.9
29
-
-
260
363
1134
1x150rm /35
3,4
1.9
35
32
32.2
-
-
405
363
1410
1x185rm /35
3,4
1.9
35
33.6
34
-
-
510
363
1511
1x240rm/35 1x300rm /35
3.4
3,4
2.0
2.1
35
35
36.2 38.6
36.6 39
-
-
-
-
665
830
363
363
1743 1983
1x120rm /35
8.0
2,1
35
39.6
41.1
1443
2400
330
363
1640
1x150rm /35
8.0
2,2
35
41.2
43
1693
2700
405
363
1770
1x185rm /35
8.0
2,2
35
42.9
44.8
2028
3100
510
363
1945
1x240rm /35 1x300rm /35
8.0
8.0
2,3
2,4
35
35
45.5 47.9
47.5 50.0
2548 3078
3725 4345
665
830
363
363
2205 2460
1x400rm /35 1x500rm /35
8.0
8.0
2,5
2,6
35
35
51.5 55.0
53.3 56.5
3835 4805
5290 6410
1060
1410
363
363
2880 4375