XKDT-Y 3x1x150/35 mm² 12/20 kV

Description

Description

Standards

  • Product
    HD 620; IEC 60502
  • National
    ASE

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
  • SZ concentric copper wire screen
  • Swelling tape
  • Black PE outer sheath, with 2 red longitudinal stripes
  • Three-pole construction:
  • Assembly of three monopolar cables

Properties

  • Longitudinal sealing by two layers of tape which swell in the presence of moisture and prevent the spread of water in the event of an injury to the sheath
  • Outer sheath made of specially abrasion-resistant PE 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
150 mm²
Conductor diameter
14.5 mm
Average insulation thickness
4.8 mm
Diameter over insulation
25.1 mm
Screen section
35 mm²
Diameter over external conductor / metallic screen
28.9 mm
Average sheath thickness
1.8 mm
Diameter over single-core cable
32.8 mm
Diameter over assembly
70.8 mm
Approximate weight
644.0 kg/100m
Nominal outer diameter
70.8 mm
Number of cores
3

Electrical characteristics

Electrical characteristics

Rated Voltage Uo/U (Um)
12 / 20 (24) kV
Maximum operating voltage
24 kV
Max. DC resistance of the conductor at 20°C
0.124 Ohm/km
I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF1
285 A
I max. @ 60°C-buried, trefoil, joined, earthing 2pts, LF1
281 A
I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF1
368 A
I max. @ 90°C-buried, trefoil, joined, earthing 2pts, LF1
364 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 1pt, LF1
339 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 2pts, LF1
336 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 1pt, LF1
377 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 2pts, LF1
375 A
Permissible short circuit current conductor 0.5s
30.7 kA
Permissible short circuit current conductor 1s
21.8 kA
Permissible short circuit current screen 0.5s
6.4 kA
Permissible short circuit current screen 1s
4.7 kA
A.C. Conductor resist. 50Hz and at 90 °C
0.159 Ohm/km
Nominal phase capacitance
0.291 µF / km
Nominal inductance
0.36 mH/km
Phase reactance 50 Hz - trefoil formation
0.114 Ohm/km
Impedance at 50Hz and 90°C
0.18 Ohm/km

Mechanical characteristics

Mechanical characteristics

Maximum pulling force by laying
18 kN

Usage characteristics

Usage characteristics

Minimum installation temperature
-5 °C
Bending factor when laying
12 (xD)
Bending factor when installed
8 (xD)
Maximum operating temperature
90 °C
Short-circuit max. conductor temperature
250 °C

Resources

Resources

Documentation

Declaration of Performance

  • Declaration of Performance n� : 1000398-CHCD
  • Certification Date : 3/1/23
  • AVCP (Assessment and Verification of Constancy of Performance) : System 4
  • Declared performance : Fca

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