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Cu/XLPE/CWS/PE - TRIPLEX Al/XLPE/CWS/PE - TRIPLEX

Uo/U - 6.35/11 kV; 19/33 kV BS 7870-4.10
The three single-core cables with insulation of cross-linked polyethylene (XLPE) factory bindled in TRIPLEX, are designed for transfer and distribution of electrical power with nominal voltage Uo/U 6.35/11 and 19/33 kV and frequen¬cy 50 Hz in urban and district electrical networks and for electrical supply of transformer's substations, small and medi¬um 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
Factory bundled
three single-core cables
in TRIPLEX
factory bindled in TRIPLEX
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
6.35/11; 19/33 kV 12kV;     36kV
Test voltage AC (≈) - 15 min
6.35/11;      19/33kV 25.4kV;       76kV
Level of partial discharge
at 2*Uo
Bending radius, min
Temperature of laying
max. 10 pC
 
 
15x D cable
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