Adss-Fiber-Optic-Cables For Aerial Installations

ADSS (All Dielectric Self-Supporting) optical fiber cables are a type of aerial fiber cable that allows for fast and cost-efficient installation. These cables do not require a messenger and can be suspended directly on power poles.

This article will discuss the characteristics and construction of this non-conductive cable. We will also provide some tips on how to choose the right ADSS for your needs.

Span Length

When choosing the best adss-fiber-optic-cable span length for an aerial installation, there are several factors to consider. These include the terrain, maximum sag requirements, weight considerations, and pole availability. Telecommunication providers must also analyze the potential environmental conditions, including ice, wind, and UV exposure.

ADSS fiber cable is available in a variety of pole span lengths, making it an excellent choice for various installation scenarios. Long-span ADSS cable features a central tension rod member, gel-free buffer tubes, and optical fibers. The buffer tubes are stranded around the core, and the optical fibers are contained in each tube. The voids between the tubes are filled with a water blocking material, and additional yarns surround the tubes. The inner and outer cable jackets envelop the tubes and yarns, and an additional layer of aramid yarns is provided for added strength.

The ezSPAN ADSS cable is designed for use on power distribution poles, with each unit engineered based on its full weather load and rated to withstand up to 1200 feet (365 meters). The ezSPAN features flexible buffer tubes and swellable water-blocking to make it easy to mid-entry, prep, and routing in splice closures. It’s also the only ADSS cable to combine these features, delivering the easiest to prepare, route and splice ADSS cable on the market. The ezSPAN is offered in a single or dual jacket design, and is also available in a range of fiber counts and span lengths.

Cable Strength

When selecting adss-fiber-optic-cables for aerial installations, the cable strength needs to be high enough to support the weight of the cables and their accessories, as well as to resist environmental influences like wind. It is important that the manufacturer takes into account a number of factors, such as fiber count, cable diameter, tensile strength, operating temperature range and attenuation, when designing the adss-fiber-optic-cables.

Another factor when choosing an adss-fiber-optic-cable is the type of construction. Some types of adss-fiber-optic-cables require a messenger wire for support, while others are self-supporting and do not need additional supports. The most common type of self-supporting adss-fiber-optic-cables is called ADSS (All-Dielectric Self-Supporting Optical Cable). It uses aramid or fiberglass yarns for strength, making it non-metallic. This makes it a good choice for aerial applications, as it does not require the use of messenger wires or steel towers to support the cables.

The ADSS-fiber-optic-cables can be made with a single or double jacket. The double jacket is especially suitable for long-span applications, as it offers more protection against mechanical stresses.

The structure of the ADSS-fiber-optic-cable consists of two to twelve color-coded optical fibers in loose adss-fiber-optic-cables tubes. The fibers are packed inside a central tube that is filled with water-blocking grease, and helically wrapped aramid yarn strength members supply peripheral strengthening. The cable is then extruded with PE or AT sheath.

Cable Construction

Optical fiber cables are built of layers of dielectric insulation, waterproof and central reinforcement materials. Their tensile load bearing elements are generally aramid yarns. The core is the strand of optical glass that transports data signals from a transmitter to a receiver. Its diameter determines how much light it can carry.

The cladding is the protective layer that surrounds the core and helps to keep water and electrical energy away from it. This layer is also what makes it possible for optical data to be transmitted over the length of a fiber segment.

Different insulating materials are used depending upon their maximum operating temperature limitations. Examples include rubber, paper, XLPE (Cross linked polyethene), and PVC. Some of these materials are coated with other non-hygroscopic fillers like Poly propylene to prevent moisture absorption.

In a loose-tube cable design, color-coded plastic buffer tubes house and protect the optical fibers. A gel-filling compound impedes water penetration and the excess fiber length insulates the cable from stress of installation and environmental loading.

A separate sheath – which can be made of either PVC or XLPE – is applied between the laid up cores and the armour. The outer sheath also provides protection from solar ultraviolet light. ADSS cables are ideal for aerial deployments. They are easy to install because they do not require relying on nearby power lines or towers for support. This means that they can be installed quickly, and can even be run over existing lines in some cases.

Optical Performance

Optical fibers allow light signals to travel long Fiber Optic assembly companies distances, and their low attenuation means less loss of data. They also have high bandwidth, allowing them to carry more information than copper wires. They are able to withstand a high level of interference, making them ideal for communication lines.

Unlike copper cables, which must be supported by a messenger, ADSS fiber optic cables can be self-supporting. This design makes them easier to install, and it helps alleviate the stress on power line tower structures caused by cable weight and wind. This also reduces the amount of maintenance needed for these cables.

The optical fibers in ADSS cables are packed in a PBT tube filled with water-blocking ointment. A sheath is then wrapped according to the required tensile strength, such as a PE or AT sheath. This sheath is used to protect the cable core against chemical attack and mechanical damage.

The sheath is made of plastic to prevent corrosion, and it is UV-resistant. It also provides protection from environmental effects, such as moisture and acid. The sheath is bonded to the fibers by an aramid yarn to ensure that there are no gaps or loose connections. The aramid yarn also has excellent load-bearing properties, helping to support the ADSS cables. This is especially important in areas with high temperatures and abrasive environments.