24-core OPGW optical cable diameter

The typical diameter of a 24-core OPGW cable ranges from approximately 16 mm to 20 mm, depending on design and manufacturer.Cable Construction and Diameter FactorsA 24-core OPGW (Optical Ground Wire) cable consists of a central tube containing 24 optical fibers, which is usually made of stainless steel or aluminum for mechanical protection. This core is surrounded by single or double layers of aluminum-clad steel (ACS) wires or aluminum alloy wires, which provide both mechanical strength and electrical grounding capability . The overall diameter depends on:Number of protective wire layers (single vs. double layer)Type of central tube (stainless steel or aluminum)Fiber protection method (loose tube, gel-filled, or PBT tube)Environmental protection (UV-resistant coatings, moisture-proof gel, and thermal protection) Typical Diameter RangeSingle-layer 24-core OPGW: approximately 16–18 mmDouble-layer 24-core OPGW: approximately 18–20 mm Some compact designs, like AFL CentraCore, can house up to 96 fibers in a 12 mm diameter, but for a standard 24-core configuration, the diameter is generally larger to accommodate mechanical and environmental protection .Applications24-core OPGW cables are used on high-voltage transmission lines to serve dual purposes:Grounding and lightning protectionTelecommunication signal transmission (voice, data, video) They are suitable for overhead lines above 110 kV, unmanned substation monitoring, and power line protection systems . In summary, when selecting a 24-core OPGW cable, the diameter typically falls between 16 mm and 20 mm, but the exact value should be confirmed with the manufacturer based on the specific design, environmental conditions, and mechanical requirements.