XKDT 1x400 Cu/50 mm² 12/20kV
XKDT 1x400 Cu/50 mm² 12/20kV
Medium voltage 20 kV single-core cables with cross-linked PE insulation (XLPE) and copper-wire screen.
Read more- Nexans ref. : 10152581
- EAN : 7611755050757
Description
Description
Standards
-
ProductHD 620 S2 P10N; IEC 60228 Class 2 ; IEC 60502
Applications
- Underground distribution networks
- Laying in tubes and direct buried
- Arises in electrical substations
Key points
- Halogen free
- Outer PE sheath especially abrasion-resistant and low shrinkage
- Longitudinally watertight ensured by a tape which swells in the presence of moisture and prevent the spread of water in case of injury to the sheath
- XLPE cross-linked insulation high dielectric strength and low loss
Construction
- Copper conductor
- Inner semi-conductor extruded
- Cross-linked PE insulation (XLPE)
- Outer semi-conductor extruded
- Semi-conductive swelling tape
- Copper wire screen SZ
- Swelling tape
- Outer PE sheath black + 2 red lines
Notice
- Other cross-sections and voltage on request
- Noflamm sheath possible on request
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
50 mm²
Diameter over external conductor / metallic screen
38.8 mm
Average sheath thickness
2.2 mm
Nominal outer diameter
43.5 mm
Approximate weight
474.0 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
0.047 Ohm/km
I max. @ 60°C-buried, flat, spaced, earthing 1pt, LF1
548 A
I max. @ 60°C-buried, flat, spaced, earthing 2pts, LF1
417 A
I max. @ 90°C-buried, flat, spaced, earthing 1pt, LF1
703 A
I max. @ 90°C-buried, flat, spaced, earthing 2pts, LF1
556 A
I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF1
482.6 A
I max. @ 60°C-buried, trefoil, joined, earthing 2pts, LF1
463 A
I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF1
624.6 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
702.8 A
I max. @ 60°C-in the air inside, flat, spaced, earthing 2pts, LF1
584 A
I max. @ 90°C-in the air inside, flat, spaced, earthing 1pt, LF1
1004.8 A
I max. @ 90°C-in the air inside, flat, spaced, earthing 2pts, LF1
860 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 1pt, LF1
606 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 2pts, LF1
584 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 1pt, LF1
872 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 2pts, LF1
846 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
9.4 kA
Permissible short circuit current screen 1s
6.8 kA
A.C. Conductor resist. 50Hz and at 90 °C
0.061 Ohm/km
Nominal phase capacitance
0.425 µF / km
Nominal inductance
0.32 mH/km
Phase reactance 50 Hz - trefoil formation
0.101 Ohm/km
Impedance at 50Hz and 90°C
0.12 Ohm/km
I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF0.627
527.9 A
I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF0.627
685.2 A
Mechanical characteristics
Mechanical characteristics
Maximum pulling force by laying
24 kN
Usage characteristics
Usage characteristics
Minimum installation temperature
-5 °C
Bending factor when laying
15 (xD)
Bending factor when installed
9 (xD)
Maximum operating temperature
90 °C
Short-circuit max. conductor temperature
250 °C
Resources
Resources
Documentation
Accessories - XKDT 1x400 50 Cu
pdf — 123.6 kB
Declaration of Performance
- Declaration of Performance n� : 1000393-CHCD
- Certification Date : 3/1/23
- AVCP (Assessment and Verification of Constancy of Performance) : System 4
- Declared performance : Fca
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