A Best ADSS Fiber Optic Cable Manufacturer in China since 2010

Mechanical performance for ADSS Fiber Optic Cable

The mechanical properties of ADSS optical cables are mainly reflected in their maximum operating tension, average operating tension, and ultimate tensile strength. The standards for ordinary ADSS cables clearly specify the mechanical strength that optical cables with different usage methods (such as overhead, pipeline, direct burial, etc.) should have. ADSS optical cable is a self-supporting overhead optical cable, so it must withstand the long-term effects of its own gravity and must also be able to withstand the baptism of natural environment, such as strong winds, scorching sun, rain, snow, and frost. If the mechanical performance design of ADSS optical cables is unreasonable and not suitable for the local weather, there will be safety hazards and reduced lifespan of the cables. Therefore, for each ADSS cable project, professional software must be strictly designed based on the natural environment and span of the cable routing to ensure that the cable has sufficient mechanical strength.

Determination of suspension points for ADSS Fiber Optic Cable

Due to the fact that ADSS optical cables dance along the same path as high-voltage power lines, their surface not only needs to be resistant to ultraviolet radiation like ordinary optical cables, but also needs to be able to withstand long-term tests in high-voltage and strong electrical environments. The capacitive coupling between optical cables and high-voltage phase lines, as well as between them and the earth, will generate different spatial potentials on the surface of the ADSS cables. Under meteorological conditions such as rain, snow, ice, and frost, as well as dust and dirt, the potential difference causes leakage current locally on the surface of the wet and dirty optical cable, resulting in a thermal effect that evaporates water in some areas of the surface of the optical cable. At the moment of evaporation, the leakage current is interrupted, resulting in an arc and a large amount of heat energy. The accumulated heat energy will burn the surface of the optical cable, forming a tree like mark, which is known as an electrical trace. Over time, the outer protective layer is aging and damaged, and from surface to surface, the mechanical properties of aramid yarn decrease due to aging, ultimately leading to cable breakage. At present, there are mainly two ways to solve this problem. One is to use specialized electric trace resistant sheath material to extrude the outer protective layer of aramid yarn, that is, to use AT electric trace resistant sheath to reduce the electric trace corrosion on the surface of the optical cable caused by strong electricity; In addition, professional software is used to calculate the spatial potential distribution on the power tower and draw the electric field intensity distribution diagram. According to this scientific basis, determine the specific suspension point of the optical cable on the tower, so as to prevent the optical cable from being subjected to a stronger electric field.

Selection of hardware for ADSS Fiber Optic Cable

The fixation of ADSS optical cables on the tower is completed by installing hardware. The cable hardware must be used in conjunction with the optical cable, and the hardware used for different towers, spans, and outer diameters of optical cables are different. So when designing, it is necessary to fully design the types of hardware used on each tower, which towers to connect to, and the length of each cable reel. If the selection of hardware is not appropriate, serious problems such as loose or broken optical cables may occur.