The ABC Aerial Bundled Cable 0.6/1kV - 4×50mm² & 4×70mm² with AAAC conductor and XLPE insulation is a high-performance equipment specially designed for large-capacity power transmission in the medium and low-voltage power distribution field. Relying on the core advantages of "large cross-section with high current-carrying capacity, high-toughness conductor, and full insulation protection", it is widely used in urban distribution network trunk lines, large industrial park main power distribution, high-density residential community centralized power supply, and regional power grid interconnection. It has become the preferred solution to replace traditional multiple single-core large-cross-section cables and bare wires. Its design closely meets the needs of medium and low-voltage systems for "high load, low loss, and weather stability", and achieves precise breakthroughs in conductor material upgrading, insulation performance optimization, and large-cross-section structural integration. It can not only adapt to the large-capacity transmission needs of voltage levels below 1kV (single-circuit current-carrying capacity up to more than 200A) but also resist interference from complex outdoor environments, providing key support for the safe and efficient operation of power distribution networks. In terms of conductor and cross-section configuration, the core competitiveness of this cable lies in the AAAC conductor and the "4-core full large cross-section" design. The conductor adopts aluminum alloy core aluminum stranded wire (AAAC), whose material is a precise ratio of high-purity aluminum (content ≥99.7%) and magnesium and silicon alloy elements, processed by special forming and stranding processes. Compared with traditional pure aluminum conductors, the tensile strength of AAAC conductors is increased to 240-280MPa (pure aluminum conductors are about 110MPa), which can withstand greater aerial tension. The pole spacing can be extended to 120-160 meters, reducing the number of poles by 30% compared with traditional lines. At the same time, its conductivity is maintained above 61% IACS, and the 20℃ DC resistance under different cross-sections is strictly controlled: 50mm² cross-section ≤0.38Ω/km, 70mm² cross-section ≤0.27Ω/km, meeting the low-loss transmission requirements of the 0.6/1kV voltage level (line loss rate can be controlled within 2.5%). The 4×50mm² and 4×70mm² full large-cross-section configurations both adopt a 4-core structure of "3 phase lines + 1 neutral line", where the neutral line has the same cross-section as the phase line, breaking the traditional "small cross-section neutral line" design limitation. It can balance the three-phase current more efficiently, stabilize the voltage, and avoid line heating or faults caused by neutral line overload, especially suitable for scenarios with concentrated high-power equipment and easy three-phase load imbalance (such as large factories and high-density communities). The XLPE insulation layer is a key barrier to ensure the safe operation of the cable. Each conductor is covered with cross-linked polyethylene (XLPE) as the insulation material, and the insulation thickness is precisely controlled according to the cross-section difference: 1.8-2.0mm for 50mm² cross-section and 2.0-2.2mm for 70mm² cross-section, which not only meets the insulation strength requirements of the 0.6/1kV voltage level (power frequency withstand voltage ≥12kV/1min without breakdown, impulse withstand voltage ≥60kV) but also has excellent comprehensive performance. After cross-linking treatment, the molecular structure of XLPE is three-dimensional network-like, with a long-term allowable operating temperature of 90℃ and a maximum short-circuit withstand temperature of 250℃ (1 second for a short time), which can adapt to the sudden temperature changes caused by load fluctuations in the power distribution system (such as starting and stopping large equipment in factories) and avoid thermal aging and cracking of the insulation. Its dielectric loss tangent value is ≤0.0005 (20℃, 50Hz), and the volume resistivity is ≥1×10¹⁴Ω·cm, with stable insulation performance. It can effectively suppress partial discharge and reduce the risk of leakage and short-circuit caused by insulation breakdown. In addition, XLPE insulation also has excellent weather resistance and corrosion resistance. After 1500 hours of UV irradiation test, the tensile strength retention rate is ≥85% without discoloration or cracking; after 72 hours of immersion in 5% sulfuric acid or 5% sodium hydroxide solution, the insulation performance does not decrease significantly. It can resist harsh environments such as outdoor exposure, rain, snow, freezing, and industrial acid-base haze for a long time, significantly extending the service life of the cable to more than 35 years. In terms of structure and performance adaptability, the bundled design and mechanical performance advantages of this cable are remarkable. The 4 large-cross-section conductors are integrated into one by parallel bundling, and an HDPE sheath (thickness 2.0-2.5mm) can be added to the outer layer as needed. The overall structure is compact (the outer diameter of 50mm² unsheathed cable is about 32-34mm, and 70mm² is about 36-38mm), and the weight per unit length is reasonably controlled (about 2.8kg/m for 50mm² and 3.6kg/m for 70mm²), which is more than 65% lighter than copper-core cables of the same cross-section. It greatly reduces the load on the poles and simplifies the laying process - erection can be completed with small and medium-sized wire-releasing machinery, and the installation efficiency is 45% higher than that of traditional multiple large-cross-section cables. It is especially suitable for scenarios that require long-distance spans such as urban main roads and wide factory areas in industrial parks. In terms of mechanical performance, the AAAC conductor has excellent fatigue resistance. After 10,000 bending cycle tests, the conductor breaking strength retention rate is ≥90%, which can resist dynamic tension caused by wind load and temperature changes. At the same time, the minimum bending radius of the cable is 15 times the outer diameter (about 480mm for 50mm² cable and 570mm for 70mm² cable), and no excessive stretching is required during laying, avoiding damage to the insulation and conductor, and further ensuring construction safety and operation stability. In practical application scenarios, the value of this cable is fully reflected. In the transformation of urban distribution network trunk lines, the 4×70mm² specification can replace traditional multiple 50mm² cables, with a single-circuit current-carrying capacity of more than 220A, which can meet the power transmission needs of a 1-2 square kilometer area, reduce the number of line laying, lower the space occupied by poles, and help the urban distribution network upgrade to "compact and efficient". In the main power distribution of large industrial parks, the 4×50mm² specification can carry the three-phase power needs of small and medium-sized factories (such as auto parts factories and electronic equipment factories), and the 70mm² specification is suitable for the high-power needs of large heavy industrial equipment (such as machine tools and compressors). The 1kV voltage level perfectly matches the internal power distribution network of the park, avoiding abnormal equipment operation caused by voltage loss. In the centralized power supply of high-density residential communities (with more than 1,000 households), the 4×50mm² specification can cover the overall electricity consumption of a single community, and the 4×70mm² specification is suitable for extra-large communities or comprehensive communities with commercial supporting facilities (such as shopping malls and supermarkets). The design of the neutral line with the same cross-section as the phase line can effectively balance the mixed load of residential electricity and commercial electricity, avoiding voltage deviation affecting electricity quality. In regional power grid interconnection, the high strength of the AAAC conductor and the weather resistance of the XLPE insulation can adapt to strong winds and temperature changes in open suburban areas, ensuring stable power supply interconnection between different regional power grids. In terms of economic and environmental value, this cable also has significant advantages. In terms of material cost, AAAC conductors are more than 50% cheaper than copper conductors, XLPE insulation materials have high cost performance, and the bundled structure reduces the consumption of auxiliary materials. The overall procurement cost is 45-50% lower than that of copper-core cables with the same current-carrying capacity. In terms of operation and maintenance cost, its designed service life of 35 years and excellent anti-fault ability reduce the frequency of line replacement and maintenance. The full-life cycle operation and maintenance cost is only 1/2 of that of traditional cables. In terms of environmental protection, AAAC conductors can be 100% recycled, and XLPE insulation materials can achieve resource recycling after harmless treatment, which conforms to the concept of "green power distribution". In addition, the bundled structure reduces the space occupied by lines and reduces damage to the ecological environment along the line, which is especially suitable for power grid construction around ecological protection areas or urban landscape areas. In conclusion, through conductor material upgrading, large-cross-section configuration innovation and insulation performance optimization, the ABC Aerial Bundled Cable 0.6/1kV - 4×50mm² & 4×70mm² with AAAC conductor and XLPE insulation has achieved multiple values of "high current-carrying capacity, strong tolerance, economy and environmental protection". It not only solves the pain points of traditional medium and low-voltage large-capacity power distribution lines such as "high loss, large land occupation and difficult operation and maintenance" but also can adapt to the power supply needs of diverse large-capacity distribution scenarios such as cities, industry and residences. It provides key equipment support for the upgrading and transformation and high-quality development of medium and low-voltage power distribution networks and is one of the important products.