XLPE wire compared with ordinary PVC (polyvinyl chloride) wire, higher flow-carrying capacity, stronger overload capacity, longer service life (PVC wire environment is better when the thermal life is generally 20 years, while the XLPE wire thermal life is generally 40 years); PVC wire combustion will be decomposed to release a large number of black smoke and hydrogen chloride toxic gases, while the XLPE wire combustion will not produce halogens and toxic gases, the production is carbon dioxide and water. What is produced is carbon dioxide and water.
Ordinary PVC wire (insulation and sheath) combustion delay ignition quickly, fuelling the fire, 1 ~ 2min that is the loss of power supply capacity, its combustion decomposition of black smoke released up to the extent of the finger, seriously affecting the evacuation of people and the fire rescue work to carry out. More seriously, PVC combustion will decompose and release hydrogen chloride (HCL) and dioxins and other highly toxic corrosive halogen gases, can cause death, and into dilute hydrochloric acid conductive film attached to electrical equipment, seriously reducing the insulation of the equipment, the formation of difficult to remove the secondary disaster.
XLPE and polyvinyl chloride (PVC) are used for wire and cable insulation materials, but XLPE wire and cable is more environmentally friendly than PVC wire and cable, the overall performance is stronger.PVC is a thermoplastic material, the mechanical properties depend mainly on the polymer crystals.PVC wires in the overcurrent or short-circuit fault, the temperature may rise so that the internal production of softening and deformation, resulting in a reduction in insulation performance; and XLPE wire The use of chemical or physical methods, so that thermoplastic PE into thermosetting XLPE, greatly improving its heat resistance and mechanical properties, reducing its shrinkage, so that it is no longer melted after the heat, and maintains the excellent electrical properties.PVC wire long-term working temperature of only 70 ℃, while the XLPE wire is a high temperature resistant cable, as a high temperature wire and cable it can allow long-term working temperature of up to 90 ℃, in 130 ℃ temperature can still maintain the elastic state. Finally, XLPE wire is lighter in weight and smaller in diameter than PVC wire, which makes it easy to install and lay, and the attachment joints are simple.
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