XDALT 1x 50 Al/28 mm² 12/20 kV
XDALT 1x 50 Al/28 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. : 10507134
- EAN : 7611755557119
Description
Description
Standards
-
ProductHD 620; IEC 60502
-
NationalASE
Applications
- 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
Aluminum
Conductor shape
Round compacted
Dimensional characteristics
Dimensional characteristics
Conductor cross-section
50 mm²
Conductor diameter
8.1 mm
Average insulation thickness
4.8 mm
Diameter over insulation
18.7 mm
Screen section
28 mm²
Diameter over external conductor / metallic screen
21.1 mm
Average sheath thickness
1.8 mm
Nominal outer diameter
24.7 mm
Approximate weight
58.1 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
0.641 Ohm/km
I max. @ 60°C-buried, flat, spaced, earthing 1pt, LF1
133 A
I max. @ 60°C-buried, flat, spaced, earthing 2pts, LF1
132 A
I max. @ 90°C-buried, flat, spaced, earthing 1pt, LF1
170 A
I max. @ 90°C-buried, flat, spaced, earthing 2pts, LF1
169 A
I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF1
115 A
I max. @ 60°C-buried, trefoil, joined, earthing 2pts, LF1
118 A
I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF1
147.7 A
I max. @ 90°C-buried, trefoil, joined, earthing 2pts, LF1
152 A
I max. @ 60°C-in the air inside, flat, spaced, earthing 1pt, LF1
146.4 A
I max. @ 60°C-in the air inside, flat, spaced, earthing 2pts, LF1
157 A
I max. @ 90°C-in the air inside, flat, spaced, earthing 1pt, LF1
207.9 A
I max. @ 90°C-in the air inside, flat, spaced, earthing 2pts, LF1
222 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 1pt, LF1
132 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 2pts, LF1
132 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 1pt, LF1
188 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 2pts, LF1
188 A
Permissible short circuit current conductor 0.5s
6.9 kA
Permissible short circuit current conductor 1s
4.9 kA
Permissible short circuit current screen 0.5s
2.1 kA
Permissible short circuit current screen 1s
1.5 kA
A.C. Conductor resist. 50Hz and at 90 °C
- Ohm/km
Nominal phase capacitance
0.191 µF / km
Nominal inductance
0.43 mH/km
Phase reactance 50 Hz - trefoil formation
0.134 Ohm/km
Impedance at 50Hz and 90°C
0.76 Ohm/km
Calorific Power
- MJ/m
I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF0.627
122.6 A
I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF0.627
157.7 A
Mechanical characteristics
Mechanical characteristics
Maximum pulling force by laying
1.5 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
Resources
Resources
Declaration of Performance
- Declaration of Performance n� : 1000390-CHCD
- Certification Date : 3/1/23
- AVCP (Assessment and Verification of Constancy of Performance) : System 4
- Declared performance : Fca
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