OPGW Optical Fiber Composite Overhead Ground Wire

Structural characteristics of central tube OPGW

The optical fiber unit of the stainless steel tube is placed in the center and twisted together with other metal wires to form a cable; the optical fiber is placed in the stainless steel tube to have a better excess length; the precisely designed optical cable cross-section ensures the electrical performance, mechanical physical properties and thermal stability of the optical cable;

Structural characteristics of layer-stranded OPGW

The stainless steel tube optical fiber unit is designed to be twisted together with other metal wires at the same time;

The optical fiber placed in the stainless steel tube has a better excess length. At the same time, the stainless steel optical fiber unit of the layered structure is located on the second layer, which produces a larger and more stable tensile excess length through stranding;

Precisely designed optical cable cross-section ensures the electrical performance, mechanical physical properties and thermal stability of the optical cable;

Application characteristics

According to the technical conditions of the line, without changing the structure of the optical cable, by combining the proportion of aluminum and steel sections, a product that meets the technical requirements of the line can be obtained;

The stainless steel tubular OPGW optical cable structure has higher lateral pressure and impact resistance than the aluminum tube structure; stainless steel has low conductivity, high strength, and good corrosion resistance, and the optical fiber is well protected;

The stainless steel tube is filled with grease to prevent moisture or water from penetrating; adjusting the remaining length of the optical fiber can make the optical cable have good temperature characteristics;

The inner layer of high-strength, low-conductivity aluminum-clad steel wire bears the OPGW's own weight and external load; using the principle of charge skin effect, overload or fault short-circuit current is channeled through the outer layer of good conductors, which is beneficial to the protection of the optical fiber;

Optical cables have similar mechanical and electrical properties to conventional overhead ground wires, which facilitates the replacement of old ground wires and the design and installation of new ground wires. It has the dual functions of ground wire and communication.

The remaining length of the optical fiber can be precisely controlled to ensure the cable's ability to withstand high loads and large spans;