Copper Core XLPE Insulated Overhead Cable

Copper Core XLPE Insulated Overhead Cable

The difference between XLPE insulated cables and PVC insulated cables must first be the insulating material, one is cross-linked polyethylene and the other is polyvinyl chloride. Although it is only a few words, it is very different. The abbreviation of ethylene in English is PVC. It is a polymer of vinyl chloride. It has good chemical stability, resistance to acid, alkali and some chemicals, and has good resistance to aging and flame resistance. It can be used as an insulation layer for cables and wires. Artificial leather products; polyethylene abbreviated as PE, it is a polymer of ethylene, non-toxic, easy to color, good chemical stability, cold resistance, radiation resistance, good electrical insulation, it is suitable for food and medicine packaging materials, making food utensils , Medical equipment, and can also be used as insulation materials for the electronics industry.

Cross-linked polyethylene is an important technology to improve the performance of PE. Cross-linked modified PE can greatly improve its performance, which not only significantly improves the mechanical properties, environmental stress cracking resistance, and chemical resistance of PE The comprehensive performance of corrosion resistance, creep resistance and electrical properties has also greatly improved the temperature resistance level, which can increase the heat resistance temperature of PE from 70°C to above 90°C, thus greatly broadening the application range of PE.

The difference between XLPE insulated cables and PVC insulated cables, followed by different performance characteristics.

Ordinary PVC wire and cable (insulation and sheath) burns quickly and promotes the fire. The power supply will be lost within 1 to 2 minutes. The black smoke released by the combustion and decomposition can reach the level of reaching the fingertips, causing difficulty in breathing and evacuation. The most serious thing is that when PVC burns, it will decompose and release highly toxic and corrosive halogen gases such as hydrogen chloride (HCL) and dioxins, which is the main cause of death in fires (accounting for 80% of fire deaths) and becomes dilute hydrochloric acid. The conductive film is attached to the electrical equipment, seriously reducing the insulation performance of the equipment, and forming a secondary disaster that is difficult to remove.

However, XLPE insulated cables have higher current carrying capacity, stronger overload capacity, longer service life (generally 40 years), and no halogen toxic gas when the cables burn.

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