Cable HS XKDCu(Al)T 400 mm² Alu 220 kV
Cable HS XKDCu(Al)T 400 mm² Alu 220 kV
HV XLPE insulated single core cables with a copper wire screen, longitudinal and radial watertightness.
Read more- Nexans ref. : XKDCu(Al)T 400 Alu 220 kV
Description
Description
Standards
-
TestIEC 60840; IEC 62067
-
NationalHD 632 Section O
Applications
- Underground distribution networks
- Laying in tubes and directly buried
- Arises in electrical substations
Key points
- Low shrinkage, abrasion-resistant PE outer sheath
- Longitudinal watertightness by swelling tapes which prevent water ingress in case of damage to the outer sheath
- Low loss high dielectric strength XLPE insulation
Construction
- Aluminium conductor
- Inner semi-conductor
- Cross-linkend PE insulation ( XLPE )
- Outer semi-conductor
- Semi-conductive swelling tape
- Copper wire screen
- Semi-conductive swelling tape
- Metallic sheath lengthwise (Copper or Aluminium)
- Outer PEHD sheath
Comment
- Cross section from 240 mm² to 2000 mm²
- Other level's tension or cross-section on request
- NOflamm version available on request
- 2 metallic sheaths lengthwise available: copper XKDCuT, Alu XKDAlT
Characteristics
Characteristics
Dimensional characteristics
Dimensional characteristics
Conductor cross-section
400 mm²
Conductor diameter
23.2 mm
Diameter over insulation
71.2 mm
Outer Diameter
86.7 mm
Screen section
185 mm²
Approximate weight
7.8 kg/m
Electrical characteristics
Electrical characteristics
Operating voltage
220 kV
Permissible short circuit current screen 1s
28.0 kA
Permissible short circuit current conductor 1s
37 kA
Max. DC resistance of the conductor at 20°C
0.078 Ohm/km
Capacity core to screen
0.135 pF/m
I max. @ 90°C-buried in trefoil joined
570 A
I max. @ 90°C-buried in trefoil spaced
580 A
I max. @ 90°C-buried in flat formation joined
525 A
I max. @ 90°C-buried in flat formation spaced
580 A
I max. @ 75°C-buried in trefoil joined
515 A
I max. @ 75°C-buried in trefoil spaced
525 A
I max. @ 75°C-buried in flat formation joined
470 A
I max. @ 75°C-buried in flat formation spaced
520 A
Load factor
1
Sheaths grounding
1 point
Thermal soil resistivity dry zone
0.85 °K.m/W
Mechanical characteristics
Mechanical characteristics
Maximum tensile load during service (Tl)
1200.0 daN
Usage characteristics
Usage characteristics
Max. conductor temperature in service
90 °C
Short-circuit max. conductor temperature
250 °C
Ambient ground temperature
20 °C
Laying operation bending radius
3100 mm
Laying depth, center of system
1000 mm
Laying tube diameter
200 mm
Distance between tubes (X)
300 mm
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