Common models of 24-core OPGW optical cables

Common 24-core OPGW optical cable models include OPGW-24B1-50, OPGW-24B1-60, OPGW-24B1-80, OPGW-24B1-90, and OPGW-24B1-100, designed for dual functions of grounding and high-speed optical communication.Overview of 24-Core OPGW CablesA 24-core OPGW cable integrates optical fibers within the overhead ground wire of high-voltage transmission lines, providing both grounding protection and telecommunication capabilities . The optical fibers are typically single-mode, compliant with ITU-T G.652 standards, and operate at wavelengths of 1310 nm and 1550 nm with low attenuation (0.35 dB/km and 0.25 dB/km respectively), . This dual-purpose design reduces construction costs and simplifies installation, as the cable serves as both a ground wire and a communication medium .Cable StructureCentral Tube: Stainless steel or aluminum tube houses the 24 optical fibers, often filled with hydrogen-absorbing gel to prevent fiber degradation .Protective Layers: Fibers are coated with UV-curable acrylate and enclosed in a PBT tube for mechanical protection and thermal stability .Metal Reinforcement: Surrounding the central tube are aluminum-clad steel (ACS) wires or a combination of ACS and aluminum alloy wires, providing tensile strength, lightning resistance, and corrosion protection .Outer Sheath: Aluminum or aluminum-coated steel wires form the outer layer, ensuring electrical conductivity and mechanical durability .Common Models and SpecificationsTypical 24-core OPGW models include: OPGW-24B1-50, OPGW-24B1-60, OPGW-24B1-80, OPGW-24B1-90, OPGW-24B1-100 . These models differ in diameter, weight, and mechanical strength, allowing adaptation to various high-voltage lines (66kV–500kV) and environmental conditions, including coastal or chemically aggressive areas .Applications24-core OPGW cables are used for:High-voltage transmission line grounding and lightning protection Voice, data, and video communication over power lines Monitoring systems such as lightning waveform detection, unmanned substation monitoring, and power line operation systems Upgrading or replacing old transmission lines without extensive new infrastructure AdvantagesDual functionality: Combines grounding and communication in one cable .High reliability: Fibers are protected against environmental hazards like lightning, short circuits, and extreme weather .Long service life: Superior mechanical and electrical properties ensure durability .Cost-effective installation: Reduces construction time and maintenance costs .24-core OPGW cables are widely manufactured and exported, with companies offering customization based on client requirements, including fiber type, cable diameter, and mechanical specifications .