The 1c×10mm² copper stranded (Cu/XLPE/PVC) cable is a power transmission line suitable for 0.6/1kV voltage level. It features a high-purity copper conductor core, cross-linked polyethylene (XLPE) insulation layer, and a polyvinyl chloride (PVC) outer sheath. Combining excellent conductivity, insulation stability, and mechanical protection, it is widely used in industrial power distribution, building wiring, and equipment connection scenarios.​ Structurally, the cable is designed as a single core (1c) with a conductor cross-sectional area of 10mm², made through multi-strand copper wire stranding. The stranded copper structure not only enhances the flexibility of the conductor, facilitating bending and routing in narrow spaces or complex environments, but also improves tensile and fatigue resistance, reducing the risk of conductor damage caused by bending or vibration during construction. The use of high-purity copper (purity ≥99.9%) ensures extremely low DC resistance (≤1.83Ω/km), effectively minimizing energy loss during current transmission and improving power delivery efficiency.​ The insulation layer is made of cross-linked polyethylene (XLPE), which forms a three-dimensional network molecular structure after special cross-linking treatment. This gives it significantly higher temperature resistance (long-term operating temperature up to 90℃, maximum short-circuit temperature 250℃) and aging resistance compared to ordinary polyethylene. XLPE has extremely high insulation resistance (≥10¹⁴Ω·m), reliably isolating the conductor from the external environment to prevent leakage or breakdown, maintaining stable insulation performance even in humid, dusty, or harsh environments. Additionally, it has strong chemical corrosion resistance, resisting erosion from acids, alkalis, oil, and other substances, extending the cable's service life.​ The outer sheath is made of polyvinyl chloride (PVC), which has good mechanical strength and impact resistance, effectively protecting the inner insulation layer and conductor from damage caused by extrusion, friction, or external collisions. The PVC sheath also has flame-retardant properties (compliant with GB/T 18380 flame retardancy standards), which can slow down flame spread in case of fire, reducing safety hazards. Furthermore, the smooth surface of the sheath facilitates installation through pipes or cable trays, and its excellent weather resistance adapts to ambient temperatures ranging from -15℃ to 60℃, making it suitable for both indoor and outdoor scenarios.​ In terms of performance parameters, the cable has a rated voltage of 0.6/1kV, suitable for power transmission and distribution in low-voltage power systems. It has strong short-circuit withstand capacity, tolerating short-term overload of 25 times the rated current within 5 seconds, ensuring circuit safety in case of faults. Its bending performance is also outstanding, with a minimum bending radius of 6 times the cable outer diameter (static) and 12 times (dynamic), meeting complex wiring requirements. During production, the cable strictly adheres to national standards such as GB/T 12706, undergoing multiple quality control checks including insulation resistance testing, withstand voltage testing, and mechanical performance testing to ensure the electrical and physical properties of delivered products meet standards.​ In application scenarios, the 10mm² cross-sectional single-core cable has a current-carrying capacity of approximately 55A (when laid in air), suitable for power supply of medium-power equipment such as small motors, central air conditioners, and industrial control cabinets. In the construction field, it can be used for floor distribution trunk lines, emergency lighting systems, or dedicated lines for fire-fighting equipment. In industrial settings, it is commonly used for connecting workshop equipment to distribution boxes and temporary construction power supply lines. Its single-core design is particularly suitable for occasions requiring separate pipe threading or flexible routing, avoiding the difficulty in laying caused by core entanglement in multi-core cables.​ In summary, the 1c×10mm² copper stranded (Cu/XLPE/PVC) cable, with its advantages of efficient conductivity, temperature and weather resistance, safety, reliability, and easy installation, has become an ideal choice in low-voltage power distribution systems. It not only meets the stability requirements of daily power transmission but also adapts to diverse usage environments, providing solid power support for industrial production and building electricity consumption.

This article focuses on two Nyy type copper core polyvinyl chloride (PVC) insulated power cables with 1kV voltage level, namely 3X1X120mm² triple-core cable and 2X1X10mm² duplex cable. Although both products belong to the Nyy series, due to differences in structure and specifications, they perform different functions in power transmission systems, jointly providing efficient and safe power solutions for industrial, commercial and civil fields.​ In terms of specifications, the identifiers of the two cables contain clear technical implications. In "3X1X120mm²", "3X1" indicates that the cable consists of 3 individually insulated single-core conductors, forming a triple-core structure, which is suitable for three-phase AC power systems; "120mm²" is the cross-sectional area of a single conductor, and this specification enables it to have a strong current-carrying capacity. At an ambient temperature of 30°C, the continuous current-carrying capacity can reach 210A, with an adapted power of about 105kW, which is sufficient to meet the needs of high-power scenarios such as large industrial equipment (such as injection molding machines, air compressors) and workshop main line power distribution. In "2X1X10mm²", "2X1" means that it is composed of 2 individually insulated single-core conductors to form a duplex structure, suitable for single-phase AC or DC circuits; the cross-sectional area of "10mm²" determines its current-carrying capacity characteristics. At the same ambient temperature, the continuous current-carrying capacity is about 55A, with an adapted power of about 11kW, which is often used for residential indoor wiring, small household appliance power supply and lighting system circuits.​ In terms of materials, both cables use high-purity electrolytic copper (purity ≥99.95%) as the conductor core to ensure low resistance and high-efficiency conductivity, reducing energy loss during transmission. The insulation layer is made of temperature-resistant PVC material, which has excellent insulation strength (power frequency withstand voltage of 3kV/5min without breakdown), corrosion resistance and flame retardancy (self-extinguishing time after leaving the fire ≤10 seconds). Among them, the insulation layer thickness of the 120mm² conductor is 1.4mm, and that of the 10mm² conductor is 0.7mm, both of which can meet the insulation requirements of 1kV voltage level, and can adapt to the working environment of -15℃ to 70℃, resisting the influence of complex conditions such as dryness and dust.​ The difference in application scenarios stems from the design of specifications and structures. The 3X1X120mm² triple-core cable, with its characteristics of large cross-section and high current-carrying capacity, is mainly used for main line power distribution in industrial plants, low-voltage side outgoing lines of transformers in large commercial complexes and main incoming lines of high-rise buildings. For example, in large manufacturing workshops, the cable can connect the workshop main distribution box and the junction boxes in each production area, stably supporting the simultaneous operation of multiple large-scale equipment. Its flexibility (bending radius ≥12 times the cable outer diameter) also facilitates laying in cable trays or underground pipe galleries. The 2X1X10mm² duplex cable, due to its small cross-section and flexible and lightweight characteristics, is widely used in socket circuits, lighting branches in residential interiors and power supply for equipment in small commercial places (such as convenience stores, offices). In residential building decoration, the cable is often concealed in wall or floor conduit，and its smooth insulation surface reduces friction with pipes, reducing the risk of damage during construction.​ In addition, both cables comply with international low-voltage cable standards and have passed strict factory tests (including DC resistance, insulation resistance, mechanical performance, etc.) to ensure safety and reliability. In terms of construction convenience, the multi-core integrated design reduces the number of cables, simplifies the wiring process, and lowers installation costs.​ In summary, the 1kV 3X1X120mm² Nyy triple-core cable and 2X1X10mm² Nyy duplex cable, with their suitable specifications, high-quality materials and scenario-based design, meet the needs of high-power and medium-low power transmission respectively, and have become indispensable key components in low-voltage power distribution systems, providing a strong guarantee for the stability of power supply in different scenarios.