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EXeCWB EAXeCWB

Uo/U -   8.7/15 kV, 12/20kV, 20.8/36 kV NBN C 33 - 323
The single-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    8.7/15kV , 12/20kV, to 20.8/36 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 NBN C 3-323
Conductors
Cu and Al stranded compacted, according to IEC 60228 cl.2 (NBN C 30-228)
Inner semi-conductive layer
semi-conductive XLPE compound
Insulation
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 insulating tape
Sheath
PE compound tipe HDPE to NBN C 3-323
Color
Black or Red
Technical data
Conductor resistance at 20°C
According to IEC60228
class 2
(NBN C 30-228)
Operating temperature
90°C continuous operation
Overload temperature
120°C /100h per year max./
Short circuit temperature
250°C /5 s max./
Nominal voltage Uo/U:
8.7/15; 12/20; 20,8/36 kV
Highest system voltage Uo/U, no more than
8.7/15; 12/20; 20.8/36 kV 17.5 kV; 24 kV; 41.5kV
Test voltage Uo/U
8.7/15;   12/20;   20.8/36 kV
AC ( ) - 5 min
35 kV; 48 kV;   83 kV
Level of partial discharge at 2*Uo
 max. 5 pC
Bending radius, min
15x D cable
Temperature of laying
no less than - 15°C
Temperature of
exploitation
 -30 to 50°C
Tests
according to NBN C 33 323
Force of strain in laying N max.
where:
 
  
Al cores - 30*n*S core
Cu cores - 50*n*S core
N is number of cores and S is cross section of cores in mm
 
Construction data EXeCWB; EAXeCWB   8.7/15; 12/20kV; 20.8/3
Number of conduc tors and nominal cross section
Thic­kness of insulation
 

 
 
Thic­kness of sheath
 

 
 
 
Nominal   
cross section of
 

 

 
 
Cable diameter
approx. 
 

 
 
 
 
EXeCWB
EAXeCWB
Mass of
Cu approx.

 
 
Mass of
cable
approx.
 
 
Mass of
Al approx.
 
 
Mass of
Cu approx.
 
 
Mass of
cable
approx.
 
Nxmm2
mm
mm
 mm2
mm
kg/km
kg/km
kg/km
kg/km
kg/km
8.7/15 kV
 
 
 
 
 
 
 
 
 
1x25 rm /16
4.5
2.6
16
26.8
480
939
68
265
782
1x50 rm /16
4.5
2.6
16
29.0
690
1200
130
265
905
1x95 rm /25 1x150 rm/25
4.5
4.5
2.6
2.9
25
25
32.5
35.9
1120
1595
1723 2308
260
405
265
265
1128
1384
1x240rm/25 1x400rm /35
4.5
4.5
3.1
3.3
25
35
40.0
47.3
2455
3835
3311 4953
665
1060
265
363
1786
2541
12/2OkV
 
 
 
 
 
 
 
 
 
1x25 rm /16
5.5
2.6
16
29.2
490
1017
68
265
860
1x50 rm /16
5.5
2.6
16
31.4
690
1285
130
265
989
1x95 rm /25 1x150 rm/25
5.5
5.5
2.7
3.0
25
25
35.0
8.4
1120
1595
1828 2425
260
405
265
265
1233 1500
1x240 rm/25
5.5
3.1
25
42.7
2455
3430
665
265
1905
1x400rm /35
5.5
3.3
35
49.6
3835
5084
1060
363
2672
20.8/36 kV
 
 
 
 
 
 
 
 
 
1x120 rm/25 1x150 rm/25
8,8
8,8
3.0
3.2
25
25
43.5
45.3
1345
1595
2555 2896
330
405
265
265
1805 1971
1x240 rm/25 1x400 rm/35
8,8
8,8
3.4
3.6
25
35
49.8
56.9
2455
3835
3970 5705
665
1060
265
363
2445
3293