The Na2xy-J 4×95mm², 4×50mm² 0.6/1kv XLPE insulated cable is a high-performance cable suitable for medium and low-voltage power distribution systems. With the excellent properties of XLPE insulation material and multi-specification cross-sectional design, it is widely used in power transmission in industrial plants, commercial buildings, municipal engineering and other scenarios, providing stable and safe energy guarantee for complex electrical environments.​ In terms of structural design, both cables adopt a 4-core copper conductor configuration, corresponding to cross-sectional specifications of 95mm² and 50mm² respectively. The conductors are made of high-purity electrolytic copper (purity ≥99.95%) through a bunch stranding process, which not only improves the mechanical strength of the conductor, enabling it to withstand tensile and bending stresses during laying, but also reduces the skin effect loss during current transmission, with a conductivity of over 58MS/m. In the 4-core design, 3 cores are phase lines and 1 core is a neutral line, adapting to the three-phase four-wire power distribution system without the need for additional neutral line laying, simplifying the wiring process.​ The insulation layer is the core advantage of this series of cables, using cross-linked polyethylene (XLPE) material. The thickness of the insulation layer is designed differently according to the cross-sectional specifications: 1.4mm-1.8mm for 4×95mm² cables and 1.2mm-1.5mm for 4×50mm² cables. After cross-linking treatment, XLPE forms a three-dimensional network molecular structure, with excellent electrical properties - insulation resistance ≥1000MΩ·km, breakdown strength ≥20kV/mm, and can operate stably for a long time under the rated voltage of 0.6/1kv. At the same time, its temperature resistance is outstanding, with a long-term working temperature of up to 90℃, and can withstand 250℃ high temperature during short circuits (within 5 seconds), far exceeding ordinary PVC insulated cables, suitable for high-temperature environments or short-term overload scenarios.​ The sheath and protection design further enhance the cable's environmental adaptability. The sheath is made of weather-resistant polyvinyl chloride (PVC) material. The sheath thickness of 4×95mm² cables is 1.8mm-2.2mm, and that of 4×50mm² is 1.5mm-1.8mm, with good acid and alkali resistance, UV resistance and wear resistance, which can resist oil pollution, chemical corrosion in industrial environments and climate erosion during outdoor laying. In addition, the cable as a whole has undergone bunch flame retardant treatment, with an oxygen index ≥30, meeting the GB/T 18380 flame retardant standard, which can effectively delay the spread of flame and reduce the risk of fire.​ In terms of performance parameters, both cables meet the 0.6/1kv voltage level requirements, with significant differences in current-carrying capacity: the 4×95mm² cable has a current-carrying capacity of about 240A-260A when laid in air and 200A-220A when directly buried, suitable for power supply of high-power equipment clusters; the 4×50mm² has a current-carrying capacity of about 150A-170A in air and 120A-140A when directly buried, suitable for medium-power load scenarios. The bending radii are 12 times and 10 times the cable outer diameter (about 280mm and 200mm respectively), facilitating laying in narrow spaces.​ In application scenarios, 4×95mm² cables are often used in power trunk lines of production lines in industrial plants and power supply of central air conditioning systems in commercial complexes; 4×50mm² are suitable for distribution branches in office buildings, municipal street lamp systems, etc. Both support various laying methods such as open laying, pipe threading and direct burial, and can maintain stable performance in complex environments such as humidity, dust and high temperature, with a designed service life of more than 30 years.​ In terms of construction and maintenance, excessive bending or extrusion should be avoided during cable laying. For direct burial, a sand cushion should be laid and warning signs should be set; special cold-shrink or heat-shrink accessories are used for sealing at joints to ensure waterproof and moisture-proof. In daily maintenance, the operating temperature can be monitored by infrared temperature measurement, and the aging degree can be evaluated in combination with insulation resistance testing to early warn potential faults.​ In summary, the Na2xy-J series XLPE insulated cables, with their characteristics of high-efficiency conductivity, temperature and corrosion resistance, flame retardancy and safety, have become an ideal choice in the medium and low-voltage power distribution field, providing reliable support for power transmission in various construction and industrial scenarios.