Definition of xlpe cable

 Definition of xlpe cable

Cross-linked polyethylene (XLPE) is a hydroelectric hose made from a 3D molecular bonded polyethylene resin created in a plastic structure. The cross-linked manufacturing process also enhances low temperature, impact and tensile properties as well as shape memory crosslinked polyethylene pipes, requiring only heat to return them to their original shape. Cross-linked polyethylene (XLPE) pipes are beginning to gain popularity in many industries. XLPE is also used in cooling systems, domestic plumbing and insulation for high voltage electrical cables. XLPE cable: high and low temperature Hydrolysis resistant High electrical and insulating properties High abrasion resistance Certified for drinking water. High extrusion speed on a standard line.

Advantages 

 Lower cost mechanically. XLPE tubing is used to provide strong thermal conductive insulation around the cable, durability and temperature. Polyethylene has a maximum conductor temperature of 90 ° C and an emergency load of up to 140 ° C, depending on the standard used. Unshielded - PVC / XLPE)What is the full shape of XLPE? This refers to cross-linked polyethylene or vulcanized polyethylene. The main material is low density polyethylene. Polyethylene is a thermoplastic material made up of a long chain of hydrocarbon molecules. At high temperatures, these molecules tend to move with each other. so that the material becomes more and more easily deformable and eventually melts at around 110 ° C. Advantage of the GRID CABLES XLPE cable Very low dielectric losses Higher current carrying capacity Short circuit index at 250 ° C above 160 ° C for PVC. CABLE XLPE can maintain flexibility down to -40 ° C.

 Easy connection and finish Light weight They are not susceptible to fatigue damage from vibration or load cycles Better resistance to most chemicals, oils, acids, etc. Can be installed along cable routes without height restrictions Characteristics of XLPE insulated cables Cable must be of type extra-high voltage, applicable in accordance with the requirements of the price list, compressed round copper core without sheathing or single-core, if the cross-section is less than or equal to 800 kv. Mm, or segmental compression round copper wire (Miliken) with a cross section of more than 800 sq. mm, the core is protected by semiconductor tape, followed by a layer of semiconductor compound, XLPE insulation, insulation protection with semiconductor compound applied directly to the insulation, which is longitudinally sealed with non-woven tape with water-soluble absorbent on the insulating screen, followed by a radial seal of seamless corrugated asphalt coated aluminum with polyethylene coating and a general graphite coating layer that meet the specifications.

Used

 Cables used before or repaired after damage are not accepted. The cable should be suitable for underground installation with uncontrolled routing and flooding and should be suitably designed with chemicals in the outer sheath to protect it from rodent and termite attacks. and thermal stress in steady state and transient operating conditions. The progressively designated cable length in meters per meter should be applied to the cable sheath. Cables must have an outer sheath made of a material with an oxygen index of at least 29 and a temperature index of at least 250 ° C. The permissible tolerance for the overall cable diameter must be plus or minus 2 mm. more