PVC cable: PVC is used as insulation material, the maximum working temperature of the cable shall not exceed 70°; The specific gravity of PVC is between 1.35 and 1.5.
Polyethylene cable: cross-linked polyethylene (XLPE) is used as insulation material. The maximum working temperature of the cable shall not exceed 90°. The specific gravity of polyethylene is between 0.922 and 0.95. Better insulation than PVC
Xlpe polyethylene cable is a kind of cable suitable for distribution network and other fields. It has advantages that PVC insulated cable can not compare with. It has simple structure, light weight, good heat resistance, strong load capacity, no melting, chemical corrosion resistance, high mechanical strength and so on.
The polyethylene cable has the following advantages:
1.Heat resistance: XLPE with mesh three-dimensional structure has excellent heat resistance. Will not decompose and carbonize below 300℃, long-term working temperature up to 90℃, thermal life up to 40 years.
2. Insulation performance :XLPE maintains the original good insulation characteristics of PE, and the insulation resistance is further increased. The tangent of the dielectric loss Angle is very small and is not 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 have been improved, so as to make up for the shortcomings of PE vulnerable to environmental stress and cracking.PP extrusion
4.Chemical resistance :XLPE has strong acid and alkali resistance and oil resistance, its combustion products are mainly water and carbon dioxide, less harm to the environment, meet the requirements of modern fire safety,
The type of polyethylene cable includes:
Xlpe insulated PVC sheathed power cable
Xlpe insulated PVC sheathed flame retardant power cable
Xlpe insulated steel tape armored PVC sheathed power cable
Xlpe insulated steel tape armored PVC sheathed flame retardant power cable