XKDT-Y 3x1x95 Alrm / 16 CuK mm² 12/20kV

Description

Description

Standards

  • Product
    HD 620; IEC 60502
  • National
    ASE

Applications

  • Underground distribution networks
  • Laying in tubes and direct buried
  • Arises in electrical substations

Construction

  • Aluminium conductor
  • Inner Semiconductor
  • Cross-linkend PE insulation (XLPE)
  • Outer semi-conductor
  • Semi-conductive swelling tape
  • Copper wire screen
  • Swelling tape
  • Outer PE sheath
  • ​Assembly of 3 XLPE insulated single core cables

 

Properties

  • Longitudinal watertightness, which protects the cable against the spread of moisture in the event of damage to the sheath, is ensured by 2 swelling tapes
  • PE outer sheath with increased abrasion resistance and low shrinkage rate
  • Cross-linked PE insulation (XLPE) with dielectric strength and low dielectric 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 material
Aluminum
Conductor shape
Round, stranded
Conductor flexibility
Stranded class 2
Material of the inner semi-conductor
Extruded
Insulation
XLPE
Material of the external semi-conductor
Extruded
Material of bedding
Semiconducting tapes
Material of the outer core / screen
Copper wires
Outer core type
Waveform concentric
Material used for longitudinal water tightness
Swellable tape
Outer sheath
LLDPE
Sheath colour
Black + 2 red lines
Halogen free
Yes

Dimensional characteristics

Dimensional characteristics

Conductor cross-section
95 mm²
Conductor diameter
11.6 mm
Average insulation thickness
4.8 mm
Diameter over insulation
22.2 mm
Screen section
16 mm²
Diameter over external conductor / metallic screen
26.0 mm
Average sheath thickness
1.8 mm
Diameter over single-core cable
29.9 mm
Diameter over assembly
64.5 mm
Approximate weight
271.0 kg/100m
Nominal outer diameter
64.5 mm
Number of cores
3

Electrical characteristics

Electrical characteristics

Rated Voltage Uo/U (Um)
12/20 kV
Maximum operating voltage
24 kV
Impulse voltage
125 kV
Max. DC resistance of the conductor at 20°C
0.32 Ohm/km
Test voltage
48 kV
I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF1
170 A
I max. @ 60°C-buried, trefoil, joined, earthing 2pts, LF1
169 A
I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF1
218 A
I max. @ 90°C-buried, trefoil, joined, earthing 2pts, LF1
217 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 1pt, LF1
200 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 2pts, LF1
200 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 1pt, LF1
287 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 2pts, LF1
286 A
Permissible short circuit current conductor 0.5s
13 kA
Permissible short circuit current conductor 1s
9.3 kA
Permissible short circuit current screen 0.5s
3.7 kA
Permissible short circuit current screen 1s
2.7 kA
A.C. Conductor resist. 50Hz and at 90 °C
0.41 Ohm/km
Nominal phase capacitance
0.226 µF / km
Nominal inductance
0.383 mH/km
Phase reactance 50 Hz - trefoil formation
0.12 Ohm/km
Impedance at 50Hz and 90°C
0.428 Ohm/km
Calorific Power
66.3 MJ/m

Mechanical characteristics

Mechanical characteristics

Maximum pulling force by laying
5.7 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

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