XKDT 1x500 Al/35 mm² 12/20 kV

Description

Description

Standards

  • Product
    HD 620; IEC 60228 Class 2 ; IEC 60502

Applications

This family is designed for single-core medium-voltage connections in substations and underground networks:

  • Underground distribution networks
  • Installation in ducts and direct buried laying
  • Electrical substations and MV installations
  • Infrastructures requiring service continuity and reliability

Key advantages

  • Robust XLPE insulation for high dielectric performance
  • Excellent mechanical and environmental properties
  • High durability for MV distribution networks
  • Suitable for direct burial, ducts, and dedicated cable routes
  • Halogen-free
  • 10.4% recycled copper / low-carbon aluminium, CO₂ footprint reduced by up to 40%

By choosing the XKDT – 12/20 kV single-core MV cable range, you select a reliable, robust, and durable cable designed to meet the requirements of modern medium-voltage networks.

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
500 mm²
Conductor diameter
26.7 mm
Average insulation thickness
4.8 mm
Diameter over insulation
39.1 mm
Screen section
35 mm²
Diameter over external conductor / metallic screen
42.9 mm
Average sheath thickness
2.2 mm
Nominal outer diameter
47.6 mm
Approximate weight
263.0 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
0.06 Ohm/km
I max. @ 60°C-buried, flat, spaced, earthing 1pt, LF1
495 A
I max. @ 60°C-buried, flat, spaced, earthing 2pts, LF1
413 A
I max. @ 90°C-buried, flat, spaced, earthing 1pt, LF1
634 A
I max. @ 90°C-buried, flat, spaced, earthing 2pts, LF1
546 A
I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF1
436 A
I max. @ 60°C-buried, trefoil, joined, earthing 2pts, LF1
424 A
I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF1
562 A
I max. @ 90°C-buried, trefoil, joined, earthing 2pts, LF1
550 A
I max. @ 60°C-in the air inside, flat, spaced, earthing 1pt, LF1
583 A
I max. @ 60°C-in the air inside, flat, spaced, earthing 2pts, LF1
548 A
I max. @ 90°C-in the air inside, flat, spaced, earthing 1pt, LF1
837 A
I max. @ 90°C-in the air inside, flat, spaced, earthing 2pts, LF1
796 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 1pt, LF1
565 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 2pts, LF1
552 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 1pt, LF1
813 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 2pts, LF1
797 A
Permissible short circuit current conductor 0.5s
67.5 kA
Permissible short circuit current conductor 1s
47.9 kA
Permissible short circuit current screen 0.5s
8.1 kA
Permissible short circuit current screen 1s
6.0 kA
A.C. Conductor resist. 50Hz and at 90 °C
0.078 Ohm/km
Nominal phase capacitance
0.449 µF / km
Nominal inductance
0.3 mH/km
Phase reactance 50 Hz - trefoil formation
0.095 Ohm/km
Impedance at 50Hz and 90°C
0.123 Ohm/km
Calorific Power
50.7 MJ/m
I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF0.627
478 A
I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF0.627
618 A

Mechanical characteristics

Mechanical characteristics

Maximum pulling force by laying
25 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

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