XDALT-YT 3x1x300 Cu/44 mm² 12/20kV

Description

Description

Standards

  • Product
    HD 620; IEC 60502
  • National
    ASE

Applications

This family is designed for underground medium-voltage networks where effective earthing and a reliable screen are required:

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

Key advantages

  • XLPE insulation with high dielectric strength and low losses
  • Excellent mechanical and environmental properties
  • High durability for MV distribution networks
  • Suitable for direct burial, ducts, and dedicated cable routes
  • Radial watertightness ensured by bonded aluminium tape
  • Halogen-free
  • Assembly of three single-core cables
  • Outer sheath made of HDPE
  • 10.4% recycled copper / low-carbon aluminium, CO₂ footprint reduced by up to 40%

By choosing the XDALT YT – 12/20 kV three-core aluminium-screened range, you select a reliable, robust, and durable cable designed to meet the requirements of modern medium-voltage networks.

Characteristics

Characteristics

Construction characteristics

Construction characteristics

Conductor flexibility
Class 2
Conductor material
Copper
Conductor shape
Round compacted

Dimensional characteristics

Dimensional characteristics

Conductor cross-section
300 mm²
Conductor diameter
21.0 mm
Average insulation thickness
4.8 mm
Diameter over insulation
32.6 mm
Screen section
44 mm²
Diameter over external conductor / metallic screen
35.0 mm
Average sheath thickness
1.5 mm
Nominal outer diameter
88.5 mm
Approximate weight
1126.9 kg/100m
Number of cores
3

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
0.0601 Ohm/km
Calorific Power
151 MJ/m
I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF1
413 A
I max. @ 60°C-buried, trefoil, joined, earthing 2pts, LF1
407 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 1pt, LF1
519 A
I max. @ 60°C-in the air inside, trefoil, joined, earthing 2pts, LF1
511 A
I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF1
534 A
I max. @ 90°C-buried, trefoil, joined, earthing 2pts, LF1
527 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 1pt, LF1
747 A
I max. @ 90°C-in the air inside, trefoil, joined, earthing 2pts, LF1
739 A
Impedance at 50Hz and 90°C
0.12 Ohm/km
Nominal inductance
0.31 mH/km
Nominal phase capacitance
0.367 µF / km
Permissible short circuit current conductor 0.5s
61.1 kA
Permissible short circuit current conductor 1s
43.4 kA
Permissible short circuit current screen 0.5s
8.7 kA
Permissible short circuit current screen 1s
6.7 kA
Phase reactance 50 Hz - trefoil formation
0.099 Ohm/km

Mechanical characteristics

Mechanical characteristics

Maximum pulling force by laying
36 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° : 1000391-CHCD
  • Certification Date : 3/1/23
  • AVCP (Assessment and Verification of Constancy of Performance) : System 4
  • Declared performance : Fca

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