How to choose the right ADSS cable for your project?

How to choose the right ADSS optical cable? Many customers and friends want to know, generally speaking, ADSS optical cables use a variety of power lines, it is necessary to choose the appropriate ADSS optical cable according to the voltage level, and 220kV and above high-voltage transmission lines are used as communication links to ensure communication lines and The service life of the transmission line (30 years), from reliability, construction and maintenance, engineering personnel should choose 220kV, OPGW and multiple trunk transmission lines ADSS.

For transmission lines of 220kV and below, especially in the field of substation communication, ADSS optical cables can be considered. Engineers should first consider the existing power lines, the reliability of erecting ADSS optical cables, the running time of power lines, the aging degree of towers, and the original design standard conditions for evaluation to determine the feasibility of installation.

At present, there are two main types of ADSS optical cables: central tube structure and optical cable structure.

Center tube construction: fibers to excess length place filler tube (or other suitable material) water stopper PBT, wrap around appropriate aramid yarn according to required tensile strength, then extrude PE (<12kV electric field strength) Or in (less than or equal to 20kV electric field strength sheath. The center tube structure is easy to obtain a small diameter, the ice and wind load is small, and the weight is relatively small, but the optical fiber is limited.

Stranded layer structure: fiber optic loose tube to the extruded sheath of the central strength member (FRP) of the winding system at a certain distance (can be canceled in a small tension and small span), and then wind an appropriate aromatic according to the required tensile strength Packed with nylon yarn, then extruded PE or sheath. The optical cable core is filled with ointment, but when the ADSS is under a large span and a certain sag, due to the small resistance of the ointment, the optical cable core is easy to slide, and the sleeve part is easy to loosen. Therefore, the loose tube is fixed in the center to strengthen and dry the optical cable core. Excellent , but the process is somewhat difficult. The stranded structure is easy to obtain the extra length of the safety fiber, although the diameter and weight are slightly larger, it has more advantages in long-span applications.

According to the electric field strength of ADSS optical cable, it can be divided into AT protection type and standard PE sheath. The characteristics of ADSS optical cable are as follows:

(1) It is designed for power system. It is a self-supporting aerial fiber optic cable without any metal material in its structure;

(2) The overall insulation structure and high-voltage resistance index are beneficial to the construction and operation of power lines without being affected;

(3) The tensile strength of high-resistant Lun material can withstand strong tension, meet the requirements of large-span overhead power lines, and prevent birds from pecking and artificial shooting;

(4) The thermal expansion coefficient of ADSS optical cable is small, and the arc of the optical cable changes little when the temperature changes greatly, and the weight is light, and the shoe ice and wind resistance are small.

If you have any technical questions need our support, or new project need our price for budget, pls feel free to contact us!