XDALT-YT 3x1x 50 Cu/28 mm² 12/20kV

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XDALT-YT 3x1x 50 Cu/28 mm² 12/20kV

The XDALT YT family – 12/20 kV three-core aluminium-screened cables – is designed to ensure reliable performance in medium-voltage distribution networks. Thanks to their robustness, XLPE insulation, and high resistance to mechanical and environmental stresses, these cables guarantee long-term operation in underground installations and electrical infrastructures.

Nexans ref. : 10507129
EAN : 7611755557065

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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

Construction characteristics

Conductor flexibility

Class 2

Conductor material

Copper

Conductor shape

Round compacted

Dimensional characteristics

Conductor cross-section

50 mm²

Conductor diameter

8.2 mm

Average insulation thickness

4.8 mm

Diameter over insulation

18.8 mm

Screen section

28 mm²

Diameter over external conductor / metallic screen

21.7 mm

Average sheath thickness

1.5 mm

Nominal outer diameter

57.9 mm

Approximate weight

291.2 kg/100m

Number of cores

Electrical characteristics

Rated Voltage Uo/U (Um)

12/20 kV

Maximum operating voltage

24 kV

Max. DC resistance of the conductor at 20°C

0.387 Ohm/km

Calorific Power

70.3 MJ/m

I max. @ 60°C-buried, trefoil, joined, earthing 1pt, LF1

146 A

I max. @ 60°C-buried, trefoil, joined, earthing 2pts, LF1

145 A

I max. @ 60°C-in the air inside, trefoil, joined, earthing 1pt, LF1

167 A

I max. @ 60°C-in the air inside, trefoil, joined, earthing 2pts, LF1

166 A

I max. @ 90°C-buried, trefoil, joined, earthing 1pt, LF1

187 A

I max. @ 90°C-buried, trefoil, joined, earthing 2pts, LF1

187 A

I max. @ 90°C-in the air inside, trefoil, joined, earthing 1pt, LF1

239 A

I max. @ 90°C-in the air inside, trefoil, joined, earthing 2pts, LF1

238 A

Impedance at 50Hz and 90°C

0.51 Ohm/km

Nominal inductance

0.41 mH/km

Nominal phase capacitance

0.179 µF / km

Permissible short circuit current conductor 0.5s

10.3 kA

Permissible short circuit current conductor 1s

7.4 kA

Permissible short circuit current screen 0.5s

5.6 kA

Permissible short circuit current screen 1s

4.3 kA

Phase reactance 50 Hz - trefoil formation

0.13 Ohm/km

Mechanical characteristics

Maximum pulling force by laying

6 kN

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

Documentation

Accessories - XDALT-YT 3x1x50 Cu pdf — 152.3 kB

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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 : F_ca

XDALT-YT 3x1x 50 Cu/28 mm² 12/20kV

Description

Description

Standards

Applications

Key advantages

Characteristics

Characteristics

Construction characteristics

Construction characteristics

Dimensional characteristics

Dimensional characteristics

Electrical characteristics

Electrical characteristics

Mechanical characteristics

Mechanical characteristics

Usage characteristics

Usage characteristics

Resources

Resources

Documentation

Declaration of Performance

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