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A2XS(F)2YT A2XS2YT

Uo/U -   12/20 kV IEC 60502-2 
The cables are designed for transfer and distribution of electrical power wite nominal voltage Uo/U 12/20 kV and fre­quency 50 Hz in urban and district electrical networks. The cables can be installed in air hanger on supporting element included in the bundle of three phases. They are recommended in:
- regions where is not allowed cutting of trees for openings of overhead lines;
 
- in boggy terrains where digging of a ditch is difficult and expensive;
- in coastal and highly polluted industrial areas in atmosphere as well as in ground;
- in stony wooden areas;
-in all cases when laying of cables in the ground and construction of overhead lines is hampered and effective over­head cabling can be proved.
Cable construction
Construction
According to IEC 60502-2
Conductor
Inner semi-conductive layer
Al stranded compacted, according to IEC 60228 class 2
semi-conductive XLPE compound
Insulation
XLPE compound
Outer semi-conductive layer
semi-conductive XLPE compound
Waterresisting 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.
Waterresisting element
-I option - water absorbing insu lating tape
-II option - water absorbing powder and a layer of plastic tape
Sheath
PE compound
type ST7 according to IEC 60502
Color
black
Supporting insulated Strope
St rope with insulation Constructions twisted into a bundle
Cable lay up TRIPLEX
include:
- 3-phase and supporting insulated
St rope
Technical data
Conductor resistance at 20°C
According to IEC60228 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:
12/20 kV
Highest system voltage Uo/U, no more than
12/20kV 24kV
Test voltage Uo/U
AC (≈) - 5 min
DC (=) - 15 min
12/20kV
42kV
134kV
Level of partial discharge
at 2*Uo
Bending radius, min
Temperature of laying
max. 5 pC
 
15x D cable
no less than - 20°C
Temperature of exploitation
-30 to 50°C
Tests
according to IEC 60502-2
 
Construction data    A2XS2YT, A2XS(F)2YT   12/20 kV
Number of conductors and nominal cross section
 
Thickness of insulation         
Thickness of  
sheath
Nominal
cross section
of screen
Diameter of bun­dle approx.
Mass of
Ma Al
approx.
Mass of cable approx.
 
Nxmm2
mm
mm
mm2
mm
kg/km
kg/km
3x(1x50rm/16)+50St
3x(1x70rm/16)+50St
5.5
5,5
2.5
2,5
16
16
63
69
390
570
3282 3624
3x(1x120rm/1b)+sUbt
5,5
2,5
16
76
990
4025