OPGW-185 Optical Cable Parameters

OPGW-185 is an Optical Ground Wire cable designed for high-voltage transmission lines, combining mechanical strength with optical fiber communication capabilities.Cable ConstructionOPGW-185 features a central optical unit composed of one or more stainless steel tubes containing optical fibers, which are loosely buffered and filled with water-blocking gel to prevent strain during installation and operation . The optical unit is protected by single or multiple layers of aluminum-clad steel and/or aluminum alloy wires, providing both mechanical strength and electrical grounding capability . The fibers are typically grouped in bundles of 12 with color-coded threads for easy identification .Fiber and Tube SpecificationsFiber Type: Standard single-mode fibers, often non-zero dispersion shifted, suitable for 1310 nm and 1550 nm operation .Fiber Count: Depending on design, OPGW-185 can accommodate up to 72 fibers per stainless steel tube, with multiple tubes stranded together to achieve higher counts such as 144, 216, or 432 fibers .Tube Diameter: Stainless steel tubes are small in diameter (e.g., 3.8 mm) to allow high fiber density without increasing overall cable size .Fiber Protection: Fibers are coated with UV-curable acrylate and housed in water-blocking gel to resist environmental stress and lateral pressure .Mechanical and Electrical PropertiesTensile Strength: The combination of stainless steel and aluminum-clad steel provides high tensile strength to withstand wind, ice, and installation stresses .Electrical Function: OPGW-185 serves as a grounding and lightning protection conductor, capable of carrying short-circuit currents without damaging the optical fibers .Armor Layers: Double or triple armor layers are available depending on environmental and mechanical requirements .Diameter and Weight: The cable diameter is optimized to minimize additional load on towers while maintaining mechanical and electrical performance .Environmental and Operational ParametersTemperature Range: Typically designed to operate in extreme conditions, from -40°C to high ambient temperatures, ensuring reliable performance in diverse climates .Corrosion Resistance: Stainless steel tubes and aluminum-clad wires provide resistance to corrosion and theft protection .Installation: Suitable for aerial installation on high-voltage transmission lines of 35 kV and above, with proper anchoring and splicing closures for fiber management .SummaryOPGW-185 is a dual-function cable combining optical communication and grounding capabilities. Its design ensures high fiber density, mechanical robustness, environmental resistance, and electrical safety, making it suitable for modern high-voltage transmission systems requiring integrated telecom infrastructure .