Description

Overview

ADSS optical cable is also known as full medium self-supported optical cable since it uses the entire medium of the optical cable as a complete medium material. The word “self-bearing” refers to the fiber cable’s ability to support its own weight and external load. Because it is self-bearing, its mechanical strength is very important; the use of all dielectric material is because the cable is in a high pressure and strong power environment, it must be able to withstand the influence of strong power; and it must be attached because it is used in the power tower. The cable has been secured to the tower. That is, adss aerial cable has three main technologies: optical cable mechanical design, suspension point determination, and selection and installation of matched fittings.

The mechanical performance of ADSS optical cable is mainly embodied in the maximum permissible tension (Maximum Allowable Tension, MAT), the average annual operating tension (Every Day Strength, EDS) and ultimate tensile strength (Ultimate Tensile Strength, for short).

The structure of the ADSS fiber cable differs from that of the overhead wire. The aramid yarn is responsible for its tensile strength. The aramid yarn’s elastic modulus is more than half that of steel. One of the components of steel is the thermal expansion coefficient. As a result, the ADSS cable sag is more susceptible to changes in the external load. The length of aerial fiber cable can reach 0.6 percent under icing conditions, whereas the wire is only 0.1 percent; the sag is very dull in response to temperature fluctuations, and the arc sag is essentially unchanged. The wind deflection angle is extremely large when there is a strong wind. When the wind speed is 30 m/s, the wind deflection angle can reach 80 degrees, while the wire’s deflection angle is only approximately half that of the cable.

Features

• The ability to tolerate extreme weather (strong winds and icing) is strong.
• The outer sheath of ADSS optical cable is AT or PE material. It operates in strong electric field, and there is corrosion problem.
• ADSS fiber cable will have wind vibration. Smooth and stable transverse wind to the cable will cause wind vibration and fatigue damage at the hanging point.
• ADSS cable has a certain resistance to pressure and can withstand the greater grip strength of the tension clamp.