Application: OPGW cable mainly on 500KV, 220KV, 110KV voltage line use, the impact of power lines, security and other factors, multi-application on the new line. OPGW is applicable Features: ☆ high pressure over 110kv line, span large (generally in more than 250M); ☆ easy to maintain, easy to solve the problem for a line across its line of mechanical properties can meet big leap; ☆ .OPGW.. outer layer of metal armor, no corrosion and degradation of the high-voltage; ☆ .OPGW during construction must blackout, large power loss, so the new 110kv high voltage line above should be used in OPGW; ☆ .OPGW performance indicators , short-circuit current, the more need to use a good conductor do armored, correspondingly reducing the tensile strength, the tensile strength and in certain cases, to improve the short-circuit current capacity, only the metal cross-sectional area is increased, resulting in cable diameter and cable weight increased, so that the intensity of the line tower raised security issues. Features: ☆ dual function of both ground and communications cable, eliminating the need to repeat the huge cost of the erection and maintenance; ☆ overhead power lines installed in the tower at the top, regardless of the best hang point and electrical corrosion and other factors; ☆... old line transformation process, the outer diameter of the cable, pull the singlet ground can match than the other well; ☆ transmission capacity, high communication quality and reliability;.. ☆ has excellent mechanical and electrical properties; ☆ Good safety performance, long life, easy shot was devastating. Introduction: OPGW cable, Optical Fiber Composite Overhead Ground Wire (OPGW also known). The fiber is placed in the ground in high voltage overhead transmission lines, transmission lines for constituting fiber-optic network, which forms the structure of both the ground and the dual function of communication, commonly referred to as OPGW cable. Since the optical fiber with anti-electromagnetic interference, light weight and other characteristics, it can be installed on top of the transmission line towers without having to consider the best frame hanging position and electromagnetic corrosion problems. Thus, OPGW with high reliability, superior mechanical properties, lower cost and other notable features. This technique when newly installed or replaced existing ground particularly suitable and economical. Fiber is the use of the core and cladding refractive index difference between the size of the two materials to make light in optical fiber transmission, which became a major revolution in communications history. Fiber optic cable light weight, small size, the power system has been adopted, the transfer between the substation and dispatch telephone center scheduling, remote signal, relay, television images and other information. In order to improve the stability and reliability of fiber optic cable, fiber optic cable and foreign development phase conductor transmission lines, power cables and composite overhead ground as one of the structures. OPGW cable due to the metal wire wrapped, so that the cable is more reliable, stable, strong, due to the composite overhead ground wire and cable as a whole, compared with other forms of fiber optic cable, both to shorten the construction period and save construction costs. In addition, if the aluminum-clad steel wire or aluminum wire stranding of OPGW, equivalent to erect a good conductor of the overhead ground wire, you can receive reducing power lines arc current, lower power frequency overvoltage, improve power line communication lines multiple benefits of interference and dangerous impact.