XLPE or Cross-linked polyethylene is a thermoset insulation material.

Cross-linked polyethylene insulation uses chemical or physical methods to change the polyethylene molecule from a linear molecular structure to a three-dimensional network structure.

From thermoplastic materials to thermosetting materials, the working temperature is increased from 70 ℃ to 90 ℃, significantly improving the performance of the material.

21/35kV MEDIUM VOLTAGE XLPE INSULATED MULTI-CORE STEEL TAPE ARMOURED CABLE

Polyethylene (PE) material itself has excellent dielectric strength, high insulation resistance, and a low dissipation factor at all frequencies making it an ideal insulator, however, it is limited in its temperature range. Cross-linking the PE to become XLPE increases the temperature range of the insulation whilst maintaining the electrical properties.

The heat resistance of the cable with cross-linked polyethylene as insulation is higher than that of PVC. It can be used for a long time at 90 ℃, and the maximum heat-resistance temperature during short circuit can reach 250 ℃;

High insulation resistance, small dielectric loss tangent, basically does not change with temperature changes;

Has good wear resistance and resistance to environmental stress cracking.
Once the cross-linked polyethylene burns the cable, carbon dioxide and water are generated, while the PVC cable burns the harmful gas of hydrogen chloride;

In addition, the density of cross-linked polyethylene is about 40% lower than that of PVC, which can significantly reduce the quality of overhead lines.