Everything You Need To Know To Find The Best adss fittings

ADSS (All-dielectric Self-supporting) optical fibre cable is atype of self-supporting aerial fiber optic cable designed for aerial installation and deployment and is suitable for various outdoor applications. This thorough overview will cover the definition, structure, benefits, and applications of ADSS fiber cables.

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What is an ADSS Fiber Optic Cable?

All-dielectric self-supporting optic cable is another name for ADSS fiber optic cable. There are two modes in optical fiber; single-mode and multimode fiber.

The self-supporting type indicates that the optic cable’s reinforcing member can withstand its weight and external load, has high mechanical strength, and can withstand the strong electric environment’s impact.

A comprehensive transmission circuit infrastructure with high-reliability performance is provided by the ADSS fiber optic cable system, which includes cables, suspension, dead-end, and termination enclosures.

What are the benefits of an ADSS cable?

In most cases, ADSS cable will provide an efficient and optimal solution for aerial cabling or outside plant (OSP) deployments.However, the most remarkable advantages of optical fibre are:

• Its dependability and low fiber cable price.
• A fiber optic cable is strong enough to allow installation lengths of up to 700 meters between support towers.
• ADSS cable is lightweight and small in diameter to reduce the load on tower structures caused by cable weight, wind, and ice.
• To maintain low optical loss throughout the cable’s life, the internal glass optical fibres are supported with no strain in the cable’s design.
• The cable is jacketed to protect the fibers from moisture.
• The jacket also shields the polymer strength elements from the effects of UV light from the sun.
• Circuits up to 100 km long are possible without repeaters using single-mode fibre cables and light wavelengths of or nanometers.
• A single cable can transport up to 144 fibers.

Structures of ADSS Cable

ADSS cable structures are classified into two types of optical fibre:

1. Central Tube Design

The fiber network in this design is placed in a PBT loose tube that is filled with water-blocking material. Then, depending on the desired tensile strength, they are wrapped in aramid yarn and extruded with a PE (110KV electric field strength) or AT (100KV electric field strength) sheath. Of the two fibre cable types, thisstructure has a small diameter and is light in weight, but it has limited lengths.

Central Tube Design

2. Stranded Structure Design

In a stranded structure design, the water-blocking grease and inner optical fibers are added to the loose fiber tube, and different loose tubes are coiled around the central reinforcement (usually FRP). The rest of the fiber optic wire is essentially the same as the central tube structure.

Between both fiber optic cable types, the lattercan produce a longer fibre length. Despite its large diameter and weight, an ADSS fiber optic cable with this structure is better suited for long-distance applications.

Stranded Structure Design

ADSS Cable Installation

ADSS fiber optic cable or types of OFC cable is a self-supporting fibre network cable that does not require any support when moving power from one location to another. These cables, while self-supporting, are typically installed on utility poles and power lines with the help of a fiber cable connector. Among ADSS fibre optic installation accessories are:

• Tension assemblies (clips),
• Optical distribution frames (ODFs)/optical termination boxes (OTBs),
• Suspension assemblies (clips),
• Outdoor junction boxes (closures),
• Optical termination boxes,
• any other

ADSS fibre anchoring clamps can be conveniently utilised during fiber optic cable installation as individual cable dead-end clamps at end poles or as an intermediate (double dead-end) clamp.

Applications of ADSS cables

ADSS cable was originally derived from military lightweight, rugged deployable (LRD) fiber wires. The advantages of fibre optic cable are many.

ADSS fibre optic cable is now used in aerial installations for short-span, typically on roadside power distribution poles, thanks to continuous improvements in technology such as fiber cable internet. Because it is non-metallic, the ADSS cable is ideal for applications near high-voltage power distribution lines, for which it has become a standard.

Circuits up to 100 km long are possible without repeaters using single-mode fibre and light wavelengths of nm or nm. ADSS OFC cable was typically used in 48 and 96 cores.

A typical ADSS fibre optic network cabling scenario.

Conclusion

ADSS fibre cables provide an optimal solution for a wider range of fiber counts and span lengths, therefore increasing the application of optic fibre in aerial cabling system designers in telecommunications, private network groups, etc.

ADSS Optical cable hardware fittings selection and installation are one of the three key technologies, which determine whether it can use its own reinforcing components to withstand its own weight in addition to whether it can also carry external loads, in the high-voltage electric environment can maintain good mechanical that the cable maximum running tension, average running tension and ultimate tensile strength.

Therefore, this article will introduce when the fiber optic cable is installed in the power tower on the overhead use, the use of what kind of matching fittings will be fixed in the tower to get the best mechanical properties and service life.

To learn about the mechanical design of ADSS fiber optic cables, please refer to the guide Introduction of ADSS Fiber Optic Cable.

To learn more about determining the suspension points of ADSS cables, please refer to the guide Application of ADSS Fiber Optic Cable In Power Communication Network.

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Preformed Helical Tension Clamp

ADSS preformed tension clamp, also called strain clamp or dead-end clamp, is mainly used for overhead self-supporting ADSS fiber optic cable line fixing, anchoring, generally installed in the terminal tower, tight line tensioning tower, corner tower and other locations.

Each set of preformed tension clamp includes inner wire, outer wire and pulling ring.

Preformed tension clamps on the wire (cable) grip can reach the wire (cable) limit tensile strength (R.T.S) of more than 95%, no stress concentration and vibration stress, the cable to play a protective and auxiliary vibration damping effect.

Single Layer Tension Clamp

ADSS single layer tension clamp, similar to the role of preformed tension clamp. Mainly used for 50 to 200 m short span of the corner, tensioning, terminal and other towers, not only for overhead fiber optic cables but also can be used for overhead wires, wires and other anchor installation and fiber optic cable construction for traction wire clamps. It is simple structure, quick and easy installation.

Single-layer tension clamp is composed of pre-stranded wire, pulling ring, U-shaped ring and so on.

Single-layer tension clamp can also be manufactured according to the application and the user’s requirements by selecting aluminum-coated steel wire or galvanized steel wire material.

Preformed Suspension Clamp

ADSS preformed suspension clamps are mainly used in overhead self-supporting ADSS cable lines, for hanging fiber optic cables, similar to the role of ordinary suspension clips. It is recommended to be used in environments where the corner of the line is ≤30º.

Preformed suspension clamps are composed of internal stranded wire, external stranded wire, rubber inserts, suspension clamps (shells), etc.

Preformed suspension clamps can provide a reasonable distribution of very low static stresses for fiber optic cables, and improve the ability to withstand dynamic stresses (such as vibration or dance), with a holding force of up to 10% to 20% of the ultimate tensile strength (RTS) of the cable.

Secondly, the preformed suspension clamp not only effectively protects the fiber optic cable, but also its smooth contour profile makes corona discharge and electromagnetic loss greatly reduced, can make no rigid contact (flexible grip), so that wear and tear is reduced to a minimum, but also rely on the clamp’s good toughness, extreme fatigue resistance and corrosion resistance to enhance the safe use of fiber optic cables for a long period of time.

Double Preformed Suspension Clamp

ADSS double preformed suspension wire clamps, also known as double-pivot suspension clamps, which in addition to all the general performance of single-suspension wire clamps, are mainly used for long-distance overhead ADSS cable lines across rivers and canyons, such as more than 800 meters and the angle of 30 ° ~ 60 ° on the tower.

Double preformed suspension clamp consists of inner wire, outer wire, rubber insert, suspension clamp, hanging plate, triangular joint plate, etc.

The fiber optic cable is fixed and protected by double pivot support, which ensures the safe and reliable operation of fiber optic cables in long span and large corner environments.

Mechanical Suspension Clamp

Short Span preformed suspension clamps are a type of preformed suspension clamps, between tangent clamps and preformed suspension clamps. It is suitable for straight towers with line distance between 100 and 200 meters and line angle below 15º. The breaking strength of the fixture is ≥40KN.

Mechanical suspension clamps are composed of reinforced pre-stranded wires, rubber inserts, shells, U-shaped rings and so on.

Mechanical suspension clamps have the convenient characteristics of tangent wire clamps, due to the addition of preformed reinforcement layer, but also enhance the cable to a certain degree of resistance to dynamic loading capacity.

Tangent Clamp

Tangent clamp is a kind of straight line tangent clamp, mainly for small span overhead fiber optic cable to provide lightweight, simple, low-cost protection and installation of cable clamps, especially for the construction and transformation of urban communication network needs. It is mainly used for the installation of fiber optic cables on short-span linear towers under 100 meters, or towers with a corner less than 15º.

Each set of tangent cable clamp consists of shell, rubber insert, bolt, nut, washer, etc., breaking strength ≥ 40KN.

Preformed Tangent Clamp

Preformed tangent clamps are mainly used for straight towers on lines with a pitch of less than 75 meters.

Preformed tangent clamps consist of a preformed wire clamp leg, a collar, and a right-angle hanging plate.

Preformed tangent clamp and tangent clamp role are similar, but its installation is simpler. Installers do not need special tools, with bare hands can be installed smoothly, and it is easy to ensure the quality of installation, and light weight.

Anti-corona Ring

Anti-corona ring is mainly used in 220KV above and transmission lines and ADSS fiber optic cables erected on the same tower. Since the fiber optic cable and the preformed fittings are located in a high electric field space, the end of the preformed fitting is susceptible to corona discharge, which threatens the safe operation of the fiber optic cable.

Anti-corona rings can greatly improve the electric field state of the end of the pre-stranded wire, reduce the corona on the cable produced by the corona corrosion, to extend the service life of the cable.

Summarize

When using aerial fiber optic cables for long distance network laying, we are not only concerned about the structure and performance design of fiber optic cables, the calculation and installation of suspension points, but also what kind of supporting fittings are used to assist fiber optic cables to maintain high mechanical properties under different usage environments is also one of the key points to be considered for backbone network laying.

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