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Copper core XLPE insulated steel tape armored PVC sheathed power cable

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XLPE insulated cable is the use of chemical or physical methods to transform the cable insulation polyethylene molecule from a linear molecular structure to a main network molecular structure, that is, thermoplastic polyethylene into thermosetting cross-linked polyethylene, thereby greatly improving its performance. Its heat resistance and mechanical properties reduce its shrinkage, make it no longer melt after being heated, and maintain excellent electrical properties.

Product Introduction

XLPE insulated cable is the use of chemical or physical methods to transform the cable insulation polyethylene molecule from a linear molecular structure to a main network molecular structure, that is, thermoplastic polyethylene into thermosetting cross-linked polyethylene, thereby greatly improving its performance. Its heat resistance and mechanical properties reduce its shrinkage, make it no longer melt after being heated, and maintain excellent electrical properties.

The cross-linked polyethylene insulated cable adopts the method of peroxide cross-linking, so that the polyethylene molecule changes from a linear molecular structure to a three-dimensional network structure, and from a thermoplastic material to a thermosetting material, and the working temperature is increased from 70 ° C to 90 ° C. Significant Improve the current carrying capacity of the cable.

XLPE insulated cables have the following advantages:

1. Heat resistance: XLPE with a net-like three-dimensional structure has excellent heat resistance. It will not decompose and carbonize below 300 ℃, the long-term working temperature can reach 90 ℃, and the thermal life can reach 40 years.

2. Insulation performance: XLPE maintains the original good insulation properties of PE, and the insulation resistance is further increased. Its dielectric loss tangent value is very small, and it is not greatly affected by temperature.

3. Mechanical properties: Due to the establishment of new chemical bonds between macromolecules, the hardness, stiffness, wear resistance and impact resistance of XLPE are improved, thus making up for the shortcoming of PE being susceptible to environmental stress and cracking.

4. Chemical resistance: XLPE has strong acid and alkali resistance and oil resistance. Its combustion products are mainly water and carbon dioxide, which is less harmful to the environment and meets the requirements of modern fire safety.

XLPE insulated cables are suitable for distribution networks, industrial installations or other fields that require large-capacity power consumption. They are used for fixed laying on power transmission and distribution lines with AC 50Hz and rated voltage of 6kV to 35kV. The main function is to transmit electric energy.

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