Process of isolating a medium voltage cable


The process of isolating a medium voltage cable is divided into seven stages: conductor feeding, XLPE and sheath material, triple extrusion, controlling thickness, cross-linking, cooling and drum coiling.

The range of Medium Voltage cables Top Cable are manufactured to the highest international standards. This is the process that follows:

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1. Conductor feeding

2. XLPE and sheath Material

The polymers are fed completely through a clean and closed circuit (white room), ensuring the purity of the materials.

3. Triple Extrusion

Extrusion is carried out through a triple layer head, facilating perfect contact between the semiconductors and the insulation and total absence of foreign elements between them.

4. Controlling Thickness

The thicknesses of each extruded layer are monitored continuosly by an X-ray measuring head, ensuring standardised thicknesses and perfect layer concentricity.

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5. Cross-linking

The cross-linking of insulation and semiconductors is carried out in a nitrogen atmosphere.

6. Cooling

The final part of the catenary tube is devoted to the controlled refrigeration of the already cross-linked cable, ensuring optimum temperature at the exit of the tube and in the subsequent spooling.

7. Drum coiling

The insulated cable is collected in double spoolers with an automatic distributor through a track with auxiliary pull, coil by coil and without excessive stress.

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The range X-VOLT® Top Cable, approved by major companies, adapting to the requirements of Medium Voltage Industry. The energy generation and distribution companies and infrastructures in general.

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