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Cu/XLPE/CTS/LSF/AWA/LSF

Uo/U - 6.35/11 kV BS 7835 - 2000
Cu conductors • XLPE insulation • Cu screen • LSF sheath • Armour Al wires • LSF sheath
The single-core power 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 kV and frequency 49 Hz to 61 H.
 
Cables are designed with sheath of halogen free mate­rials, flame retardant, free smoke emission and corrosion, and non-magnetic armor of Al wires. They are suitable for use in distribu­tion networks, electrical power stations and substations.
 
These cables are for fixed assembly in lines with unlimited difference levels for indoor installations, in cable ducts, conduits and shafts, over shelves and grills and outdoor shelter.
 
Cable construction
Construction
According to BS 6622-1999
Conductor
Cu or Al stranded compacted, wires according to BS 6360 (IEC 60228) class2
Inner semi-conductive layer
semi-conductive XLPE compound
Insulation
XLPE compound
Outer semi-conductive layer
semi-conductive XLPE compound
Metal screen
-I option - Cu tapes laid with
overlap
-II option - Cu wires laid con
centrically
Separating layer
halogen free compound
Armour
Al cores laid concentrically
Sheath
halogen free fire retardant compound type LTS 1
Color
red, black
Technical data
Conductor resistance at 20°C
According to BS 6360 (IEC228) 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:
6.35/11 kV
Highest system voltage Uo/U, no more than
12 kV;
Test voltage
AC (≈) - 15 min Level of partial discharge at 12.5 kV
25.5 kV max 10pC
Bending radius, min Temperature of laying
15xD cable no less than
-5°C
Temperature of exploitation
-30 to 50°C
Flame retardant
According to BS 4066-3
category C
(IEC 332-3 category C)
Force of strain in laying N max.
Al cores- 30*n*S core Cu cores- 50*n*S core where: n is number of cores and S is cross-section of cores in mm
 
Construction data Cu/XLPE/CTS/LSF/AWA/LSF   6.35/11 kV
Number of
conductors and
nominal cross
section
Thickness of insulation
Diameter of
Al wires for
armour
Thickness of sheath
Cable diameter approx.
Cu/XLPE/CTS/LSF/AWA/LSF
Mass of
Cu approx.
Mass of
cable
approx.
N x mm2
mm
mm
mm
mm
kg/km
kg/km
Uo/U6.35/11kV
1x50rm
 
3.4
 
1.6
 
1.8
 
28.5
 
520
 
1200
1x70rm
1x95rm
3.4
3.4
1.6
1.6
1.9
1.9
30.4
32.1
720
960
1550
1850
1x120rm
3.4
1.6
2.0
33.9
1200
2150
1x150rm
3.4
2.0
2.1
36.3
1465
2650
1x185rm 1x240rm
3.4
3.4
2.0
2.0
2.1
2.2
38.1
40.7
1795
2325
3100
3700
1x300rm 1x400rm
3.4
3.4
2.0
2.0
2.2
2.4
43.0
46.5
2925
3750
4400
5250
1x500rm
3.4
2.5
2.5
50.9
4740
6800