A standard pole line is made up of numerous fittings and hardware. One fitting you might consider getting for your pole line is the tension clamp. It frequently appears in and electrical lines.

The company is the world’s best adss tension clamp supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.

If you decide to buy tension clamps and would like any clarifications, you must gather all the information you need.

In this comprehensive guide, I&#;ll cover everything there is to know about tension clamps for the overhead line. After everything is said and done, you&#;ll be in a great position to purchase the best cable tension clamp.

What is a Tension Clamp?

A tension clamp is a useful fitting for sealing the tensional connection on a conductor or cable. At particular locations, a number of fitting components are connected to the cable.

The tension clamp completes the connection by helping to mechanically support the insulator and the conductor.

The construction of a tension clamp allows it to easily fit on any area of the wire or conductor.

What is the function of a Tension Clamp?

As we just discussed, a tension clamp is used to physically and electrically support cables.

To put things in perspective, consider these tension clamps&#; primary functions:

Providing mechanical connection

cables and pole wires are subjected to various mechanical forms under normal circumstances. They must have adequate support in order for them to remain in the positions they desire.

A tension clamp&#;s main function is to give the wires or conductors a dependable mechanical and electrical connection.

The cable is always supported by the tension clamp, regardless of the working load or longitudinal forces acting on the conductor.

Protect the cable/conductor

A protective precaution that works well is tension cable.

The ergonomic design of this power line fitting ensures that the wire always remains in the desired spot.

Usually, given the installation loads, this protection is essential.

Restrict the movement of the conductor

Two weather conditions that might accidentally displace the conductor are storms and wind. In addition to turbulence and earthquakes, this is another natural calamity.

The continual movement and vibration of the wires may interfere with the regular flow of data and electric current.

High-quality tension clamps may stop such movements by ensuring that the wire remains stable regardless of outside factors.

Types of Tension Clamps for Overhead Lines

There are two major groups of tension clamps based on functions.

Tensioning Clamp

This particular style of tension clamp is intended to support the whole load and strain placed on the conductor.

It has a strong grip that is at least 90% of the conductor&#;s rated resistance strong.

This category includes the wedge type and the bolted type.

Tensile Clamp

This type of tension clamp performs two functions at once. It simultaneously functions as a conductor and absorbs the conductor&#;s drawing power.

You must put it on the pole line safely if it is to be used as a conductor.

Tension clamps can be categorized according to their design into the following groups:

Wedge tension clamp

Wedge tension clamps are quite versatile since they are used in both substations and overhead lines.

The construction of this tension clamp comprises of two forged bodies connected at one end by a hinge. This ultimately produces a wedge-shaped structure.

To convert tension stresses into compressive clamping loads, they are designed. When the tension load is increased, the longitudinal movement within the shell increases the clamping force and strength.

This type of tension clamp can either be a single wedge or a double wedge, depending on how many bodies it contains.

Cone tension clamp

The source of the connecting force in the cone type is the sole distinction between a cone tension clamp and a wedge tension clamp.

The connection may be utilized with or without jumper connections and is dependable.

High-temperature tension clamp

For locations that are prone to extreme temperatures, this specific form of tension clamp is suitable.

The material of the tension fitting has been reinforced in specific locations.

Parts of Tension Clamps

There are various components that make up a bolted tension clamp, including:

The body is the essential component of a tension clamp. It is the part that the conductor is attached to and sustained by. The body and wedge are combined in order to expand the region of connection or attachment with the cable.

Washers: The washers are positioned next to the body of the tension clamp. The washer&#;s main job while the conductor is clamped is to shield or safeguard the conductor&#;s surface.

Straps: The load is transferred from the oscillation axis to the insulator ring by the tension clamp&#;s straps.

Threaded inserts: Also known as threaded bushings, these are fasteners that provide a point of fastening the conductor.

Bolts and nuts: How may bolts and nuts be used to firmly secure the connection between the cable and tension clamp? Bolts and nuts could be able to address this problem. They ensure sure the tension clamp is tightly secured to the cable.

Make sure all of the aforementioned components or aspects are present when purchasing a tension clamp. This is one way to make sure you bought a genuine TTF tension clamp.

Materials for Tension Clamps

Before purchasing and using the tension clamp, check the material. The material has to be safe to use with conductors. This feature is important since it influences how durable the tension clamp fastening fitting is.

Our tension clamps are constructed from premium cast iron and aluminum.

The most desirable characteristics of these materials are their strength and electrical conductivity.

They are physically sturdy and can operate with a variety of conductors.

Design Feature of Tension Clamps

Their design, form, and measurements for the overhead line will define the tension clamps&#; operation and the way in which they are connected to other components of the pole line.

It is important to construct the tension fitting such that it may move freely along the conductor.

The design of the tension clamp fastening should minimize the load and wear on the cable.

The measurements of the tension clamp fastener include length, width, and thickness. It must be accurate and conform to the requirements of the pole.

It should be straightforward to attach the tension clamp to the pole line due to the superior design and size.

preformed tension clamp: The Complete Guide

Are you looking for a secure and robust installation for your power line cables?

If so, you are in the right place because the information in this article will broaden your scope of knowledge.

Stay tuned as we give you all the details you have ever wanted to know about the preformed tension clamps.

What is a Preformed Tension Clamp?

A preformed tension clamp is also known as dead-end cable grips or preformed dead end.

 

Preformed tension clamp

You will find it in everyday use on communication OPGW cables, ADSS fiber, or OPPC.

It is also an important part of OPGW/ADSS transmission lines.

 

OPGW fiber cable

The preformed tension clamp and the dead-end grips are similar in appearance but differ significantly in function and specifications.

Apart from that, you will be able to see the difference in the strength requirement and raw materials of the two devices.

The raw materials on the preformed tension clamp are galvanized steel wire or aluminum clad steel.

Manufacturers usually export the galvanized steel preformed tension clamp for use overseas.

Different countries have their rules and standards that govern the manufacture of preformed tension clamps.

This is the reason why many manufacturers are ready and willing to customize a preformed tension clamp for you.

Why You Need a Preformed Tension Clamp

The cable has a particular design and has many functions as listed below.

The dead-end cable grips have a unique design that connects OPGW/ADSS/OPPC to overhead poles or towers.

 

The preformed tension clamp simplifies this type of connection or installation and keeps the cable inside it safe.

It protects the OPGW/ADSS/OPPC cable from any form of damage caused by the stress points.

It also makes sure that the cable is not damaged and the signal does not disappear during the process of transmission.

Types of Preformed Tension Clamp

The span or the distance between the two towers or poles will determine the kind of preformed tension clamp to use.

 

Different types of preformed tension clamp

There are three main types of preformed tension clamps namely single grips, double grips, and big grip dead end.

The single grips and the double grips are in use on the ADSS cable.

a) Single Grips

Single grip preformed tension clamps are in everyday use on the ADSS cable.

In case the distance between the two towers or poles is less than 100 meters, single grips will be in use.

This is because it has enough strength to hold cables connected at a span of 100 meters and below.

b) Double Grips

You will also realize that double grips preformed tension clamps are also in everyday use on the ADSS cable.

In case the span or distance between the two poles or towers is more than 200 meters, then the double grip will be in use.

It has more strength than a single grip, and it will be able to sustain this kind of connection.

c) Big Grip Dead End

This type of preformed tension clamp is in use for connections that are over 800 meters long.

In simple terms, you will use it in contexts where the towers or poles are more than 800 meters apart.

It has an extreme grip strength that wraps the cables having big spaces.

The spacing is for the spreading of the main points of strength.

Technical Specification of Preformed Tension Clamp

Some of the key aspects to consider when evaluating preformed tension clamp:

 

Technical specifications

· Dimension

In case you are interested in making an order for a custom-made preformed tension clamp, include the following aspects.

You will have to add the diameter of the cable, length of the cable, color mark, and number you will need.

Do not forget to mention the preferred weight of the preformed tension clamp.

The diameter is in millimeters, weight in kilograms, length in meters, and strength in kilo-newtons.

· Material Type

The type of material you will require varies according to your specifications.

The principal raw materials you can choose from are galvanized steel wire or aluminum clad steel.  The material type will affect factors such as weight, thickness, and strength of the preformed tension clamp.

· Finish &#; hot-dip galvanization

Corrosion is one of the most significant problems affecting steel and aluminum appliances.

Manufacturers make sure that their products are corrosion resistant by passing it through the process of hot-dip galvanization.

Dipping the material in hot molten zinc makes it corrosion resistant and gives it a polished finish.

· Thickness

The thickness of the preformed tension clamp depends on the diameter and the type of material you choose.

In most cases, the thicker the device, the stronger it will be, and it will hold a lot of loads.

Design

The design of the preformed tension clamp varies significantly according to the type of device you intend to use.

It will also change according to the kind of load and span between the two poles or towers.

This means that you will have a different shape and number of holes when choosing between the three types.

Single grip type will have fewer holes and a completely different design on the two ends as compared to the double grip.

The lock at the ends will also vary due to the kind of weight or load they will be handling.

· Tensile strength

The tensile strength of the preformed tension clamps varies according to the type of device you choose to use.

When selecting an apparatus for use, look at the weight or load it will be handling.

You will choose the big grip dead end if the load is huge and very far apart, usually more than 800 meters apart.

This is because of the more significant the preformed tension clamp, the higher the tensile strength.

Are you interested in learning more about preformed suspension sets? Contact us today to secure an expert consultation!

The smaller the preformed tension clamp, the lower the tensile strength.

Preformed Tension Clamp Manufacturing Process

Manufacturing preformed tension clamps require the use of aluminum and galvanized steel as the raw materials.

 

Preformed tension clamp

You will cut the material in accordance to the diameter and the length which will be available to you.

You will need the assistance of an expert to make a perfect device and remember to follow the safety rules and regulations.

After that, you will put the pieces together, and with the help of a spinning machine, you will make the design.

The design will vary depending on the type of preformed tension clamp you are manufacturing.

The material you are using has to pass through the process of hot dip galvanization to make it resistant to corrosion.

You will bend the final piece at the center before packing it and sending it to the customers.

Step-by-step Preformed Tension Clamp Installation Process

The process of installing the preformed tension clamp is, but you will require an assistant to help you.

An expert will also make the work more comfortable for you even though you can follow instructions and install it personally.

 

Installation of preformed tension clamp

Remember to put on gloves and other safety clothing to protect your hands and increase the grip of your hands.

The materials required for this process include the preformed tension clamp and a cable of the right diameter.

You will place the cable into the clevises or holes on the preformed tension clamp all the way to the end.

Remember you will be setting it on one side of the preformed tension clamp only.

You will use the opposite of the device to cover the exposed areas of cable making sure that the cable is safe.

Lock the end of the preformed tension clamp to secure the cable inside.

The process of installation will vary greatly depending on the size and length of the cable and preformed tension clamp.

You will have to look at your setup and make the right decisions before doing the installation.

Frequently Asked Questions (FAQs)

What is the application of the preformed tension clamp?

The preformed tension clamp is designed to connect the ADSS/OPGW/OPPC to the overhead tower or pole.

What are the types of the preformed tension clamp?

 

According to the span of the two poles/towers, there are three types&#;

The single grip: If the span is less than 100m&#; the single grip is enough strength to connect the ADSS cable.

Double grips: You need to choose the double grips if the span is more than 200m.

The big grip dead end: You should use the big grip dead end which wraps the cable with big space to spread the point strength when the span is more than 800m.

 

What is the raw material of the preformed tension clamp?

The preformed tension clamp raw materials are aluminum clad steel wire or galvanized steel wire.

Conclusion

Preformed tension clamps play a huge role in connecting cables that will cover very long distances.

Armed with this information, you can make the right decision on the kind of installation you will need.

Make an order for the type of preformed tension clamp you need so that you can have it custom-made specifically for you.

Clamp Up Your Knowledge: Preformed Tension Clamps Specs & Cutting-Edge Tech

Clamp Up Your Knowledge: Preformed Tension Clamps Specs & Cutting-Edge Tech

 

Vanessa Ngethe

 

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7 min read

 

 

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Feb 20,

 

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Preformed Tension Clamp for Overhead Transmission Lines

An instrument for holding and securing conductors to poles or other support structures is a preformed tension clamp. It goes by the names tension clamp and dead-end clamp as well. Additionally, it supplies the strain required to hold the conductors in place. In overhead line construction and electrical distribution systems, preformed tension clamps are useful. Depending on the particular usage and type of conductor, the clamps come in a variety of designs. It is capable of keeping the conductor&#;s tension at a constant level. This is essential to maintaining the overhead line system&#;s stability and dependability. Electrical inefficiencies reduce by the strain, which keeps the conductors from sagging. High-strength materials help to create prefabricated tension clamps, which have designs to resist mechanical forces.

Factors affecting a preformed tension clamp&#;s dimensions

The overhead line system&#;s requirements and the particular application depend on several factors. Additionally, to learn the appropriateness of premade tension clamps, confer with engineers.

Conductor size &#; the tension clamp&#;s dimensions depend on the diameter and size of the conductors utilized in the overhead systems. To provide a tight fit and hold the specified conductor diameter, the clamps must be appropriately sized.

Material strength &#; the tension clamp&#;s dimensions rely on its strength. Smaller clamp dimensions are possible because of the materials&#; excellent strength. All the while maintaining the necessary load-bearing capability.

Requirements for spacing &#; the size of the clamp depends on by the distances between support structures and conductors. The clamps&#; designs ought to accommodate the available space. It ought to maintain proper spacing and clearances.

Regulatory standards &#; this refer to adherence to industry norms about line structure and equipment.

Line tension &#; the dimensions and design of the tension clamps are also affected by the anticipated load that the tension is to support. Larger clamps help to distribute and withstand the stresses at high tension levels.

Environmental conditions &#; when choosing the dimensions, take into account elements like temperature, ice loading and wind speed.

Installation technique &#; the clamps&#; dimensions may change depending on how they install. This is due to the possibility of using specialized instruments or doing it by hand. The proportions for easier installation vary by accessibility and ease of installation.

Preformed tension clamps commonly used

Prefabricated tension clamps are available in a variety of styles and varieties to support a range of uses. They have plans for securing conductors to hold up buildings. This is all the while keeping the tension required to keep everything steady and dependable. It&#;s also critical to confirm that the clamp type you&#;ve chosen meets the requirements of your application. The most popular varieties of prefabricated tension clamps are as listed below.

Preformed- shape clamps &#; these are clamps with a helical body that encircles the conductor. They work well with a variety of conductor sizes and offer a firm grip within the conductor.

Compression tension clamps &#; these clamps hold the conductor in place by means of a compression mechanism. They also function in applications that call for high amounts of strain. They offer a robust and dependable connection.

Tension clamps with a dead end &#; these clamps fasten a conductor&#;s termination to a structural support. They are also made to withstand high tension loads and give the conductor a safe place to attach.

Grip tension clamps &#; the conductor stays in place by a gripping mechanism in these clamps. They function in applications where tension needs change often.

Suspension clamps &#; these clamps help to hang wires from structural supports. They have a hinged construction that makes tension changes and installation simple.

Tension clamps with armor rods &#; these clamps use armor rods to give the conductor more defense against wear and abrasion. Their applications include considerable mechanical stress.

Guy wire tension clamps &#; these have designs to work with guy wires to offer extra support. They fasten the guy wire to the support structure.

Technical details about ppreformed tension clamps

Depending on the particular needs, preformed tension clamps have different technical specs. A few manufacturers provide detailed information on their preformed tension clamp. The technical specs offered change based on some variables. It&#;s also crucial to get expert help while choosing preformed tension clamps. The common standards for preformed tension clamps are as follows.

Dimensional drawings &#; these comprise the preformed tension clamps&#; precise dimensional drawings. This comprises measurements for mounting holes, dimensions and other elements.

Material &#; the specs include information about the material used to build the tension clamps. Steel, aluminum and other alloys are examples of common materials. The clamp&#;s strength, resilience to corrosion, and longevity are all dependent on the mentioned material.

Breaking load &#; this is the greatest load that a tenson clamp can bear before failing. It denotes the clamp&#;s greatest capacity and is greater than the specified load.

Corrosion resistance &#; to guarantee dependability in outdoor applications, the clamp needs to be resistant to corrosion. Details about the sort of coating or surface treatment applied may be present in the specification.

Environmental rating &#; this describes the kind of environment the clamp works in. It might provide information on the range of temperatures, humidity and UV radiation exposure.

Compatibility with conductor sizes &#; this describes the range of conductor sizes that the tension clamp is capable of holding. The clamp&#;s greatest and least conductor diameters are also included.

Woring load &#; this is the greatest load that the tension clamp is capable of supporting. All the while preserving its integrity and performance.

Design standard &#; this guarantees that the clamp satisfies specific performance and security standards. Regulations like ANSI and IEC standards apply to this.

Updates and developments in the preformed tension clamp sector

To meet the requirements of intricate and demanding transmission lines, the preformed tension clamp industry is developing. The continuous demand for overhead line construction that is more dependable and efficient is the source of the developments. Making informed selections also requires staying up to date on these developments. The preformed tension clamps market has seen some noteworthy upgrades and advancements. They include the following.

Design optimization &#; ongoing research aims toward improving the preformed tension clamps&#; design. This will enhance their mechanical qualities and installation simplicity. To disperse loads, it also entails improving the clamp&#;s geometry and form.

Better corrosion protection &#; the protective coatings assist lessen the negative impacts of the hostile environment. The improvements lessen the need for maintenance and increase the clamps&#; lifespan.

Environmental sustainability - the use of recyclable materials and friendly production techniques are two examples of modern sustainability projects.

Better safety &#; insulating materials and locking systems are examples of enhanced safety measures. They assist in lowering the possibility of mishaps during installation and maintenance procedures.

Material innovation &#; this is the study of novel alloys and materials with higher strength-to-weight ratios. These contribute to the improved functionality and durability of clamps.

Integrating smart technologies &#; these include as radio-frequency identification tags or integrated sensors. They make it possible to check clamp performance in real time, execute condition-based maintenance and enhance asset management.

Digitalization and remote monitoring &#; the initiatives have made it possible to track and manage overhead line assets. This enables proactive maintenance and troubleshooting, minimizing downtime and improving system reliability.

Modular and adjustable designs &#; these enable easier customization and adaptation to different conductor sizes and configurations. They simplify inventory management and installation processes.

Features of preformed tension clamps&#; performance

The performance characteristics aid in guaranteeing the efficacy and dependability of overhead systems. These qualities aid in choosing preformed tension clamps that satisfy the project&#;s particular specifications. They also support the electrical distribution system&#;s dependability and effectiveness. The performance attributes of preformed tension clamps to take into account are as follows.

Load capacity &#; this describes the greatest tension or load that a clamp is capable of supporting without failing. This feature guarantees that the clamp can sustain the conductor&#;s weight and resist outside forces.

Durability &#; the ability of something to tolerate prolonged exposure to environmental variables is from its durability. Over the course of its anticipated service life, a sturdy clamp should keep both its structural integrity and functionality.

Corrosion resistance &#; for preformed tension clamps used outdoors, corrosion resistance is essential. They come into contact with salt, moisture, and other caustic substances here.

Gripping strength &#; the grip strength of the clamps controls how the conductor stays in place. Strong grips stop the conductor from slipping or moving in a variety of weather situations.

Preformed Tension Clamp

ADSS and OPGW Preformed Tension Clamp

 

What is preformed tension clamp?

Tension clamps are commonly used to connect ADSS/OPGW cables to poles or towers. These clamps provide support and tension to the cable while preventing it from slipping or vibrating excessively, is a vital component used in communication applications such as ADSS fiber, and OPGW cable. It is designed to connect the ADSS/OPGW to overhead towers or poles in a secure and efficient manner. 

Armor rods are also used in conjunction with tension clamps to provide extra protection and cushioning to the ADSS/OPGW cable. Armor rods are preformed rods made from high-strength aluminum alloy, which are wrapped around the cable to provide additional mechanical protection against environmental factors such as wind, ice, and other external forces.

The special design of preformed rods ensures that the tension clamps do not cause undue stress to the ADSS/OPGW cables, thereby ensuring the normal lifetime of the cable system. This is because the rods are specifically designed to distribute the load evenly across the cable, thereby reducing stress concentrations that could cause damage or premature failure of the cable.

 

 

What is the raw material of the pre-formed tension clamp?

The raw material of the prefabricated tension clamp is aluminum-clad steel wire or galvanized steel wire.

 

 

What is the purpose of prefabricated tension clamps?

Prefabricated tension clamps are designed to connect ADSS/OPGW to overhead towers or poles.

 

One important factor to consider when purchasing preformed tension clamps is price. The cost of preformed tension clamps can vary based on several factors, such as the manufacturer, the materials used, and the strength requirements of the specific application. It is essential to work with an experienced manufacturer who understands the various design standards and manufacturing processes to ensure the best quality product at the most reasonable price.

 we are committed to providing high-quality preformed tension clamps at competitive prices. Our clamps are made from top-grade materials and are rigorously tested to meet or exceed industry standards. We offer a wide range of preformed tension clamps and can customize designs to meet specific customer requirements. Our knowledgeable team can answer any questions you may have about our products or pricing. Contact us today to learn more about our preformed tension clamps and how we can meet your needs.

 

 

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