XDAlT 1x400 Cu/46 mm² 12/20 kV
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XDAlT 1x400 Cu/46 mm² 12/20 kV
Medium voltage 20 kV single-core cables with cross-linked PE insulation (XLPE) and aluminium screen tape.
Read more- Nexans ref. : 10507121
- EAN : 7611755582890
Description
Description
Standards
-
ProductHD 620; IEC 60502
-
NationalASE
Application
- Underground distribution networks
- Pipe laying and ground laying
- Installation in electrical substations
Construction
- Round copper or aluminium conductor
- Extruded inner conductor
- Cross-linked PE insulation (XLPE)
- Extruded outer semi-conductor
- Semi-conductive swelling tape
- Laminated aluminium tape screen
- Black PE outer sheath with 2 red longitudinal stripes
Properties
- Longitudinal sealing by two layers of tapes which swell in the presence of moisture and prevent the spread of water in the event of an injury to the sheath
- Radial sealing by means of the laminated aluminium tape
- Special abrasion resistant PE outer jacket with low shrinkage rate
- Cross-linked PE insulation (XLPE) with high dielectric strength and low losses
- Halogen free
admissible load MV cables
Currents are indicative and given for normal service conditions.
- Permanent charge 24h at 100% LF =1.0
- Conductor temperature 90 ° C
For cable laid in earth in tubes
- Depth of laying in soil : 1.0 m
- Max. soil temperatureempérature : 20 °C
- Soil thermal resistivity: 1.0 °C m/W
For cables placed in the open air
- Max. air temperature : 30 °C
- Protected from direct sunlight
- laid on consoles or cable trays
Grounding:
-
at one end, in this case the induced voltage increases proportionally with the length of the
the link.Attention, too high induced voltage can cause a breakdown of the outer sheath during overvoltages
transient. -
Either at both ends, which generates circulating currents and therefore more or less acceptable losses..
Correction factor
If the terms of service differ from those set out above, allowable currents must be corrected
taking into account all the correction factors that apply to the installation and service conditions encountered.
Main factors to consider are the following:
- Variable load, factor taking into account variable load, 10h to 100% and 14h to 60% LF= 0.627
- Operating temperature
- Ambient Temperature
- Thermal soil resistivity, factor taking into account the thermal resistivity of the soil in [°C * m / W]
- Magnetic armor
Our engineers are at your disposal to help and advise you.
Characteristics
Characteristics
Construction characteristics
Construction characteristics
Conductor flexibility
Class 2
Conductor material
Copper
Conductor shape
Round compacted
Dimensional characteristics
Dimensional characteristics
Conductor cross-section
400 mm²
Conductor diameter
23.4 mm
Average insulation thickness
4.8 mm
Diameter over insulation
35.0 mm
Screen section
46 mm²
Diameter over external conductor / metallic screen
37.4 mm
Average sheath thickness
2.2 mm
Nominal outer diameter
41.8 mm
Approximate weight
438.1 kg/100m
Number of cores
1
Electrical characteristics
Electrical characteristics
Rated Voltage Uo/U (Um)
12/20 kV
Maximum operating voltage
24 kV
Max. DC resistance of the conductor at 20°C
0.047 Ohm/km
I max. @ 60°C-buried, flat, spaced, earthing 1pt, LF1
550 A
I max. @ 60°C-buried, flat, spaced, earthing 2pts, LF1
449 A
I max. @ 90°C-buried, flat, spaced, earthing 1pt, LF1
705 A
I max. @ 90°C-buried, flat, spaced, earthing 2pts, LF1
594 A
I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF1
474 A
I max. @ 60°C-buried, trefoil, joined, earthing 2pts, LF1
465 A
I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF1
614 A
I max. @ 90°C-buried, trefoil, joined, earthing 2pts, LF1
604 A
I max. @ 60°C-in the air inside, flat, spaced, earthing 1pt, LF1
611 A
I max. @ 60°C-in the air inside, flat, spaced, earthing 2pts, LF1
581 A
I max. @ 90°C-in the air inside, flat, spaced, earthing 1pt, LF1
883 A
I max. @ 90°C-in the air inside, flat, spaced, earthing 2pts, LF1
847 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 1pt, LF1
596 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 2pts, LF1
586 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 1pt, LF1
861 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 2pts, LF1
849 A
Permissible short circuit current conductor 0.5s
81.4 kA
Permissible short circuit current conductor 1s
57.7 kA
Permissible short circuit current screen 0.5s
9.1 kA
Permissible short circuit current screen 1s
7.0 kA
A.C. Conductor resist. 50Hz and at 90 °C
0.06 Ohm/km
Nominal phase capacitance
0.399 µF / km
Nominal inductance
0.3 mH/km
Phase reactance 50 Hz - trefoil formation
0.096 Ohm/km
Impedance at 50Hz and 90°C
0.11 Ohm/km
Calorific Power
48.8 MJ/m
I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF0.627
517 A
I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF0.627
673 A
Mechanical characteristics
Mechanical characteristics
Maximum pulling force by laying
24 kN
Usage characteristics
Usage characteristics
Bending factor when laying
15 (xD)
Bending factor when installed
9 (xD)
Minimum installation temperature
-5 °C
Maximum operating temperature
90 °C
Short-circuit max. conductor temperature
250 °C
Fire load
13.6 kWh/m
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Resources
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