The 660/1100V VVG, VVGng, VVGNG-FRLS series copper power cables are low-voltage distribution products specially designed for the Russian market. With excellent performance and compliance with local standards, they are widely used in industrial, commercial and civil power transmission scenarios.​ In terms of specification parameters, all three types of cables use high-purity copper conductors, which have excellent conductivity and can effectively reduce power transmission losses. The rated voltage is 660/1100V, where 660V is the phase voltage and 1100V is the line voltage, adapting to the voltage requirements of the Russian low-voltage distribution system. The VVG cable is a general type, with a polyvinyl chloride (PVC) insulation layer and sheath layer wrapped around the conductor; VVGng has ultraviolet (UV) resistance, with anti-UV additives added to the sheath layer, making it suitable for outdoor open environments; VVGNG-FRLS, on the basis of UV resistance, adds low-smoke halogen-free flame-retardant characteristics, with slow flame spread speed and low smoke and toxicity when burning, suitable for places with high fire safety requirements. The number of cores of the three is flexible, commonly including 2-core, 3-core, 4-core, etc., and the conductor cross-sectional area ranges from 1.5mm² to 120mm², which can meet the power transmission needs of different powers.​ In terms of performance characteristics, the high conductivity of copper conductors ensures the stability and efficiency of power transmission, and can maintain low temperature rise even under high current loads. The PVC insulation layer and sheath layer endow the cable with good corrosion resistance, wear resistance and mechanical strength, which can resist the erosion of acids, alkalis, oil stains and other chemical substances, as well as mechanical impacts in daily laying and use. The UV resistance of VVGng makes it not easy to age and crack in the outdoor environment with cold weather and strong ultraviolet rays in Russia, extending its service life. The low-smoke halogen-free flame-retardant performance of VVGNG-FRLS has passed strict tests, which can reduce the harm of smoke to personnel evacuation and equipment in case of fire, complying with Russian fire safety regulations.​ In application scenarios, VVG cables are suitable for indoor dry environments, such as power distribution lines in residences and office buildings, connecting low-voltage equipment such as lighting and sockets; VVGng, due to its UV resistance, is often used in outdoor power distribution systems such as outdoor billboards, street lamps, and agricultural greenhouses; VVGNG-FRLS is preferentially used in densely populated places such as hospitals, schools, shopping malls, as well as facilities with strict fire safety requirements such as subways and data centers. All three cables comply with the Russian GOST standard, can smoothly pass local certification and acceptance, and meet the climate and use environment requirements of different regions in Russia.​ In terms of price, the three types of cables vary due to performance differences. VVG is more economical, suitable for ordinary indoor projects with limited budgets; VVGng has a slightly higher cost due to the addition of anti-UV materials, but it can adapt to outdoor environments, with outstanding comprehensive cost performance; VVGNG-FRLS has higher production costs due to the use of low-smoke halogen-free flame-retardant materials, but its safety performance advantages make it a necessary choice in high-risk places. Overall, this series of cables provides diversified power transmission solutions for the Russian market, taking into account performance, safety and economy.