XDAlT 1x500 Cu/49 mm² 12/20 kV
XDAlT 1x500 Cu/49 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. : 10507122
- EAN : 7611755556990
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
500 mm²
Conductor diameter
26.4 mm
Average insulation thickness
4.8 mm
Diameter over insulation
38.4 mm
Screen section
49 mm²
Diameter over external conductor / metallic screen
41.3 mm
Average sheath thickness
2.2 mm
Nominal outer diameter
45.7 mm
Approximate weight
553.0 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
0.037 Ohm/km
I max. @ 60°C-buried, flat, spaced, earthing 1pt, LF1
624 A
I max. @ 60°C-buried, flat, spaced, earthing 2pts, LF1
488 A
I max. @ 90°C-buried, flat, spaced, earthing 1pt, LF1
802 A
I max. @ 90°C-buried, flat, spaced, earthing 2pts, LF1
650 A
I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF1
534 A
I max. @ 60°C-buried, trefoil, joined, earthing 2pts, LF1
521 A
I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF1
694 A
I max. @ 90°C-buried, trefoil, joined, earthing 2pts, LF1
680 A
I max. @ 60°C-in the air inside, flat, spaced, earthing 1pt, LF1
703 A
I max. @ 60°C-in the air inside, flat, spaced, earthing 2pts, LF1
660 A
I max. @ 90°C-in the air inside, flat, spaced, earthing 1pt, LF1
1018 A
I max. @ 90°C-in the air inside, flat, spaced, earthing 2pts, LF1
965 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 1pt, LF1
686 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 2pts, LF1
671 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 1pt, LF1
994 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 2pts, LF1
976 A
Permissible short circuit current conductor 0.5s
101.7 kA
Permissible short circuit current conductor 1s
72.1 kA
Permissible short circuit current screen 0.5s
9.8 kA
Permissible short circuit current screen 1s
7.5 kA
A.C. Conductor resist. 50Hz and at 90 °C
0.047 Ohm/km
Nominal phase capacitance
0.445 µF / km
Nominal inductance
0.29 mH/km
Phase reactance 50 Hz - trefoil formation
0.094 Ohm/km
Impedance at 50Hz and 90°C
0.1 Ohm/km
Calorific Power
57.2 MJ/m
I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF0.627
585 A
I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF0.627
763 A
Mechanical characteristics
Mechanical characteristics
Maximum pulling force by laying
30 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
15.9 kWh/m
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Resources
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