Nyy-O and Nyy-J cables are polyvinyl chloride (PVC) insulated power cables that comply with the IEC60502 standard, with a rated voltage of 0.6/1kV. They include various specifications such as 5X10mm², 5X16mm², and 5X25mm², and are widely used in low-voltage power distribution systems. With excellent performance and diverse specifications, they meet the power transmission needs of different scenarios.​ In terms of specification parameters, both types of cables are of 5-core design, with conductor cross-sectional areas of 10mm², 16mm², and 25mm² respectively. The different cross-sectional areas result in differences in their current-carrying capacities. The 10mm² cable is suitable for power transmission with smaller power, while the 16mm² and 25mm² ones can meet the power needs of higher-power equipment. The 5-core design allows the cable to transmit phase lines, neutral lines, and ground lines simultaneously, ensuring the safe operation of the power system and playing an important role in three-phase four-wire power distribution systems and other similar systems. The rated voltage of 0.6/1kV indicates that it is suitable for low-voltage environments and can be used in various scenarios such as internal power distribution of buildings, connection of industrial equipment, and outdoor lines, providing stable power support for various electrical equipment.​ In terms of materials, the conductor usually uses high-purity copper, which has excellent electrical conductivity, can effectively reduce power loss during power transmission, and improve transmission efficiency. The copper conductor has high mechanical strength and can withstand certain external forces during installation and use. The insulation layer is made of polyvinyl chloride (PVC) material, which has good insulation performance, can reliably insulate current, and prevent leakage accidents. PVC material also has characteristics such as chemical corrosion resistance and wear resistance, enabling the cable to maintain stable performance in different environments and prolong its service life.​ In terms of characteristic uses, Ny y-O and Nyy-J cables are suitable for different scenarios due to their respective characteristics. Ny y-O cables may be more suitable for outdoor laying, and their structural design can resist the erosion of natural factors such as outdoor wind, rain, and ultraviolet rays; Ny y-J cables may perform well in internal wiring of buildings, adapting to relatively complex wiring environments indoors, such as in walls and pipelines. They can be used for power supply of equipment in industrial plants, power distribution systems in commercial buildings, power transmission in residential communities, etc., providing reliable power guarantee for production and life.​ Complying with the IEC60502 standard is an important feature of these two types of cables. This standard strictly regulates the design, production, and performance of cables, ensuring the quality and safety of the cables. Cables that meet the standard are more competitive in the market, and also make users more assured when choosing and using them.​ In summary, the Ny y-O and Ny y-J series 5-core PVC insulated power cables, with their diverse specifications, excellent material performance, wide range of application scenarios, and strict compliance with standards, have become indispensable important products in the field of low-voltage power distribution, providing strong support for the safe and efficient transmission of electricity.