XKDT 1x630 Cu/70 mm² 12/20kV
XKDT 1x630 Cu/70 mm² 12/20kV
Medium voltage 20 kV single-core cables with cross-linked PE insulation (XLPE) and copper-wire screen.
Read more- Nexans ref. : 10152584
- EAN : 7611755050795
Description
Description
Standards
-
InternationalIEC 60228 Class 2 ; IEC 60502
-
NationalHD 620 S2 P10N
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
- 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
630 mm²
Conductor diameter
30.9 mm
Average insulation thickness
4.8 mm
Diameter over insulation
43.5 mm
Screen section
70 mm²
Diameter over external conductor / metallic screen
47.9 mm
Average sheath thickness
2.2 mm
Nominal outer diameter
53.2 mm
Approximate weight
758.0 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
0.0283 Ohm/km
I max. @ 60°C-buried, flat, spaced, earthing 1pt, LF1
707 A
I max. @ 60°C-buried, flat, spaced, earthing 2pts, LF1
470 A
I max. @ 90°C-buried, flat, spaced, earthing 1pt, LF1
911 A
I max. @ 90°C-buried, flat, spaced, earthing 2pts, LF1
632 A
I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF1
632.4 A
I max. @ 60°C-buried, trefoil, joined, earthing 2pts, LF1
581 A
I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF1
823 A
I max. @ 90°C-buried, trefoil, joined, earthing 2pts, LF1
765 A
I max. @ 60°C-in the air inside, flat, spaced, earthing 1pt, LF1
958.8 A
I max. @ 60°C-in the air inside, flat, spaced, earthing 2pts, LF1
695 A
I max. @ 90°C-in the air inside, flat, spaced, earthing 1pt, LF1
1375.5 A
I max. @ 90°C-in the air inside, flat, spaced, earthing 2pts, LF1
1037 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 1pt, LF1
802 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 2pts, LF1
746 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 1pt, LF1
1163 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 2pts, LF1
1093 A
Permissible short circuit current conductor 0.5s
128 kA
Permissible short circuit current conductor 1s
90.8 kA
Permissible short circuit current screen 0.5s
13.4 kA
Permissible short circuit current screen 1s
9.7 kA
A.C. Conductor resist. 50Hz and at 90 °C
0.039 Ohm/km
Nominal phase capacitance
0.549 µF / km
Nominal inductance
0.31 mH/km
Phase reactance 50 Hz - trefoil formation
0.096 Ohm/km
Impedance at 50Hz and 90°C (cos φ = 0.8)
0.1 Ohm/km
I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF0.627
699.1 A
I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF0.627
912.8 A
Mechanical characteristics
Mechanical characteristics
Maximum pulling force by laying
37.8 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
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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