Categories
Home  »  Middle voltage power cables  »  Cu/XLPE/CTS/PVC/SWA/PVC Al/XLPE/CTS/PVC/SWA/PVC

Cu/XLPE/CTS/PVC/SWA/PVC Al/XLPE/CTS/PVC/SWA/PVC

Uo/U - 3.8/6.6 kV; 6.35/11 kV; 8.7/15 kV;12.7/22 kV; 19/33 kV BS 6622
The three-core cables with insulation of cross-linked polyethylene (XLPE) and longitudinal water-blocking elements ,are designed for transfer and distribution of electrical power with nominal voltage Uo/U 3.6/6; 8.7/15 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 6622
Conductor
Cu or Al stranded compacted, according to BS 6360 (IEC 60228) class 2
Inner semi-conductive layer:
semi-conductive XLPE compound
Insulation
XLPE compound
Outer semi-conductive layer
semi-conductive XLPE compound
Metal screen over each phase
-I option- Cu tapes laid with overlap over each phase -II option - Cu wires laid concen trically
Cable assembly
Three insulated and screened phases are twisted with fillings and tape support
Separating layer
PVC compound - type 9
Armour
Galvanized steel wires, laid concentrically
Sheath
PVC compound - type 9 to BS 6755-4.2
Color
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:
3.8/6.6; 6.35/11; 8.7/15; 12.7/22; 19/33
Highest system voltage Uo/U, no more than
7.2;       12;       17.5; 24;         36
Test voltage AC (≈) - 15 min
15;       25.5;    35; 51;        76kV
Level of partial discharge at kV
7.5;     12.5;     17.5;    25.5; 38 kV
max. 10pC
Bending radius, min
12x D cable
Bending radius adjacent
to joints or terminations,
min
10x D cable
Temperature of laying
no less than 0°C 
Temperature of exploita­tion
-30 to 50°C 
Force of strain in laying N max.
n-number of cores and
Al cores - 30*n*S core Cu cores - 50*n*S core S-cross section of cores in mm
 
Construction data
Cu/XLPE/CTS/PVC/SWA/PVC      Al/XLPE/CTS/PVC/SWA/PVC
3.8/6.6 kV; 6.35/11 kV; 8.7/15 kV;12.7/22 kV; 19/33 kV
Number of conductors
and nominal cross
section
Thickness
of insulation
Diameter
of St wires -for armor
Thickness of sheath
 
 
Cable diameter approx.
 
 
Cu/XLPE/CTS/ PVC/SWA/PVC
Al/XLPE/CTS/PVC/ SWA/PVC
Mass of
Cu
approx.
Cable mass approx.
Mass of
Al approx.
Mass of
cabley
approx.
Nxmm2
mm
mm
 mm2
 mm
kg/km
kg/km
kg/km
 kg/km
3.8/6.6 kV
 
 
 
 
 
 
 
 
3x35 rm
2.5
2.0
2.3
44.0
1010
3580
295
2865
3x50 rm
2.5
2.5
2.5
47.7
1360
4850
405
3890
3x70 rm
3x95 rm
2.5
2.5
2.5
2.5
2.6
2.7
51.4
55.7
1965
2730
5825
7025
585
810
4445
5105
3x120rm 3x150rm
2.5
2.5
2.5
2.5
2.8
2.9
59.1
62.5
3440
4245
7995
9010
1020
1255
5575
6020
6.35/11 kV
 
 
 
 
 
 
 
 
3x35 rm
3.4
2.5
2.5
49.5
1010
4770
295
4055
3x50 rm
3.4
2.5
2.6
52.4
1360
5390
405
4435
3x70 rm
3x95 rm
3.4
3.4
2.5
2.5
2.7
2.8
56.0
60.1
1965
2730
6470
7425
585
810
5090
5505
3x120rm
3.4
2.5
3.0
63.7
3440
8415
1020
5995
8,7/15 kV
 
 
 
 
 
 
 
 
3x35 rm
3x50 rm
4.5
4.5
2.5
2.5
2.7
2.8
54.0
57.3
1010
1360
5365 5920
295
405
4650
4965
3x70 rm
3x95 rm
4.5
4.5
2.5
2.5
2.9
3.0
61.0
65.0
1965
2730
6770
585
810
5390
5915
7835
12.7/22 kV
 
 
 
 
 
 
 
 
3x50 rm
5.5
2.5
2.9
62.1
1360
6355
405
5400
3x70 rm
5.5
2.5
3.0
66.0
1965
7265
585
5885
3x95 rm
3x120rm
5.5
5.5
2.5
3.15
3.2
3.3
70.2
74.8
2730
3440
8400
10765
810
1020
6480
8345
3x150rm
5.5
3.15
3.4
78.4
4245
11890
1255
8900
19 / 33 kV
3x50rm
 
8.0
 
3.15
 
3.4
 
75.8
 
1360
 
9020
 
405
 
8035
3x70 rm
8.0
3.15
3.5
79.5
1965
9940
585
8560
3x95 rm
8.0
3.15
3.6
83.5
2730
11095
810
9180