OPGW 12-core optical cable technical parameters

A 12-core OPGW cable typically features single-mode fibers, low attenuation, dual-function ground and communication capability, and robust mechanical protection for overhead power line applications.Optical Fiber SpecificationsFiber Type: Standard single-mode fibers (SMF) with high-purity silica core and germanium-doped cladding .Core Count: 12 optical fibers, color-coded for easy identification .Transmission Wavelength: 1310 nm and 1550 nm, suitable for long-distance communication .Attenuation Coefficient: ≤0.36 dB/km at 1550 nm, ensuring minimal signal loss over distance .Dispersion: Non-zero dispersion-shifted fibers are commonly used to optimize long-haul performance .Cable ConstructionCore Arrangement: Fibers are housed in loose buffer tubes filled with moisture-proof gel or in tight-structure sub-units for enhanced protection .Central Tube: Hermetically sealed aluminum pipe or polymer tube protects the optical fibers from mechanical stress and moisture .Armoring: One or more layers of aluminum-clad steel (ACS), aluminum alloy, or galvanized steel wires provide mechanical strength and electrical conductivity .Hydrogen-Absorbent Core: Some designs include hydrogen-absorbent materials to prevent fiber degradation in high-voltage environments .Mechanical and Electrical PropertiesTensile Strength: Designed to withstand mechanical stresses from wind, ice, and installation tension .Fault Current Capability: Metallic layers allow the cable to carry fault currents safely without damaging the optical fibers .Environmental Resistance: Resistant to UV, corrosion, and temperature variations, suitable for harsh climates .Installation and StandardsMounting: Installed as a replacement or addition to conventional overhead ground wires on high-voltage transmission lines .Standards Compliance: Typically conforms to IEC 60794-4-10 and IEEE 1138 for optical fiber and cable performance .Splicing and Termination: Color-coded fibers and modular sub-units simplify splicing and joint box preparation .ApplicationsPower Grid Communication: Provides high-speed data transmission for smart grid, SCADA, and telecommunication purposes .Long-Distance Transmission: Supports distances up to 80 km without repeaters, depending on fiber type and network design .Dual Functionality: Serves as both a ground wire and a communication medium, reducing infrastructure costs . This configuration ensures that a 12-core OPGW cable delivers reliable optical communication while maintaining the mechanical and electrical integrity required for overhead power line applications.