What is the purpose of a suspension clamp?

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Cable Suspension Clamp

Suspension Clamp Manufacturer

TTF Power manufactures and supplies suspension clamps for overhead power transmission and distribution systems. Suspension clamp for ABC cable protects the conductors and other devices from aerial vibrations and swinging caused by strong winds and storms. The clamps are made from galvanized steel and aluminum alloy, which helps them to resist corrosion caused by the different weather conditions in the environment. The resistance offered helps to increase the durability of the suspension clamps for overhead lines which in turn helps to reduce the repair and maintenance life costs.

They are used together with other devices such as bolts, nuts and washers to assist in securing a connection on the overhead lines. This help to limit loose connections that may eventually lead to electrocution. These devices should be made from similar material as the conductors as they are installed near the conductors to help reduce abrasion and friction of the different devices.

The production of the cable suspension clamp may vary in functionality and operability due to the different designs, mechanical and technical abilities of each make. They are therefore used for different applications and functions in the installations of the overhead transmission lines.

Components of suspension clamp

Suspension clamp is not a single entity as it has some major components that make up the connection to the conductors. They are as discussed below.

• The body– this is the frame supporting the ADSS suspension clamp for the conductor and it is made of aluminum alloy which is strong and also resistant to corrosion. This helps to maintain the durability of the OPGW suspension clamp.
• The keeper – the role of this part is to connect the conductor of the transmission line to the body of the helical suspension clamp.
• The strap – this are string-like constructions that are responsible for transferring the load from the axis of the swaying straight to the insulator string. The straps are perfect for the role as they are made of coated zinc material that helps them to achieve their purpose.
• Washers – these are usually put into use when the clamping of the surface is not rested vertically. This helps to provide support to the aluminum suspension clamp and the conductors. They are made of steel which helps them to resist corrosion and rust.
• Bolts and nuts – the bolts and nuts are used when the fiber optic suspension clamps are used mechanically in order to secure the connections. They are also made of steel to provide strength and resistance to corrosion.
• Threaded inserts – these are fastening elements for suspension clamps which are injected into components that have threaded holes to complete the connection. The threaded inserts are also made of stainless steel to resist corrosion and rust.

Types of suspension clamps

Suspension clamps for overhead lines are made in different designs and models as they have different roles on the transmission lines. They are each made for a particular function which means they cannot be interchanged. These types of cable suspension clamps should be selected for specific functions for the transmission lines. If unsure, you should consider consulting an expert. The most commonly used suspension clamps include:

• Suspension clamp for ADSS cable
• Suspension clamps for ABC cable
• Suspension clamp for OPGW cable
• AGS suspension clamp
• Preformed suspension clamp
• Double suspension clamp
• Suspension clamp for HT&LT cable
• Cable suspension clamp u-type

Design of suspension clamps

The design, mechanical and technical requirements of the ADSS suspension clamps define the functionalities and view of the clamp which makes it essential during the construction of the transmission lines. The well-designed OPGW suspension clamps ensure that there is a smooth coordination between the cable and other components. Some of the design aspects to be considered include:

1. Bolts and nuts — the designs of the bolts and nut should also be considered so that they can perfectly fit into the ABC suspension clamps during construction. They should also be from a similar material as the conductors.
2. Design of straps — the straps of the suspension clamp should be round-shaped and sizes should match with the sizes of the trunnion.
3. Anchor clamp — this is the one next to the conductor and should be able to move freely to allow the conductor to move. The design is attained if the trunnion of the clamp is part of the body.
4. Conductor supporting groove — the conductor supporting groove should have the right measurements for the application. The keeper of the fiber optic suspension clamp should not have any sharp edges that can produce any anomalies.

Uses of the suspension clamps on the transmission lines

The suspension clamp main use is to suspend the conductors hanging from the transmission lines. They ensure a safer connection of the above lines. They however have other important uses which are as follows.

• The cable suspension clamps help to hang and suspend the conductors.
• The suspension clamp for overhead line protects the conductor during the installation of the transmission lines on the poles.
• They can be used on the electrical pole overhead lines and the telephone transmission lines.
• They provide mechanical support by ensuring that there is the right hold on the transmission lines.
• The ABC suspension clamp control the movement of the cables against external forces such as wind and storms.

Factors to consider when purchasing suspension clamps

The market can be a tough nut to crack when it comes to selecting which suspension clamp to purchase for your overhead transmission. But not to worry since the following factors will help when choosing the suspension clamps.

1. The function of the suspension clamp — this is major to consider since the cable suspension clamps are different in the market and they are each used to achieve different purposes. Knowing the purpose you intend for the suspension clamp for overhead line is one step closer to selecting one.
2. The material used — this is also another factor to consider when planning a purchase. The best material for the suspension clamps is galvanized steel, stainless steel or aluminum alloy which helps them to resist corrosion and abrasion caused by the different weather conditions thus giving them a longer life.
3. The mechanical and tensional strength — the tensional strength is essential to support the weight of the conductors onto the perfect positions.
4. Other fittings used — this is important to know since fittings such as bolts and nuts help to secure the connections.
5. The manufacturer — this is also important since there are various manufacturers in the market specialized in manufacturing the different transmission products.

Different suspension clamps available in the market

There are different suspension clamps manufactured in the market and they are used for different purposes in the transmission lines constructions. The following clamp products are manufactured by TTF Power Systems in China.

• Aluminum trunnion suspension clamp — this is mainly used on standard voltage power line and specifically made to be used on tangent suspension sans with either horizontal or vertical post insulators.
• Bolted aluminum suspension clamp — this is mainly used to suspend or hang cables or conductors to the utility pole. This provides extra protection for the conductors
• Bolted aluminum trunnion suspension clamp — this is mainly an improved conductor support and protection system. It is used with bolts and nut and the body of the clamp is made from aluminum alloy.
• Double helical cushion suspension assembly — this is designed for use on standard voltage applications with all aluminum, ACSR, ACSS or aluminum alloy conductors. They are also made from aluminum alloy to resist corrosion.
• Double shield wire suspension clamp — this is also designed for standard voltage applications and aluminum alloy conductors. The material of the body is made from aluminum alloy.
• Ground wire suspension clamp — this is used as ground wires with galvanized steel cable. The material used to make the hardware is galvanized steel and the different parts of the hardware are made from different materials.
• Hot line hold down shackle — this hardware can be used on both the transmission lines and distribution lines and the material used to make the body is galvanized ductile iron or forged steel.
• Standard voltage suspension clamp — this is an electrical power line fitting that is used to suspend or hang the cables and conductors to the pole. It is also used to mount conductors and wires firmly on the pole. It is also made from aluminum alloy to resist corrosion.

FAQs

What is a suspension clamp?

Suspension clamps are used in the overhead transmission lines to suspend or hang cables from the transmission lines. They provide protection to the conductors by reducing the swinging caused by string winds and storms.

What are some types of suspension clamps?

Suspension clamps are of many types as they are used for various functions in the construction of the transmission lines. Some types include:

• Suspension clamp for ADSS cable
• Suspension clamp for ABC cable
• Suspension clamp for OPGW
• Double suspension clamp
• Preformed suspension clamp
• AGS suspension clamp
• Cable suspension clamp u-type

What materials are used to make the suspension clamps?

Suspension clamps are made from galvanized steel which helps them to resist corrosion, abrasion and rust which leads to prolonged life and little maintenance and repair costs.

What fittings can be used with the suspension clamps?

Suspension clamps can be used together with the bolts, nuts, and washers to secure the connections between the conductors and other devices in the overhead transmission lines.

What are the features of a suspension clamp?

Suspension clamps should be able to protect the cables and should be easily and quickly installed.

Why is suspension clamps used?

Suspension clamps provide the mechanical support required irrespective of the condition of the conductor. They also help in regulating and reducing the movement of conductors in the cases of strong winds and storms.

What is the main factor to consider when purchasing a suspension clamp?

The design and material of the suspension clamp should be considered to fit the purpose intended. The manufacturer of the product should also be considered.

Suspension Clamp Buying Guide

When working on electrical and telecommunication installations, there are two key components that you cannot avoid.

These are cables and poles.

In most cases, the cables are usually hanged to the poles or even towers.

They are responsible for transmitting electricity or communication signals from one point to another.

So, what makes the cables or conductors hang so easily yet the whole process looks delicate and complex?

It is because of one tool: Suspension clamp.

Do you have plans of buying a clamp suspension?

Read on as we guide you on what you need to know about this product.

What is a Suspension Clamp?

To start us off is the suspension clamp definition.

Also known as a suspension fitting, this is an accessory that is specially designed to hang the cables or even the conductors to the pole or even tower.

The clamp is specially constructed so that it is compatible with a  wide range of cables and conductors.

Suspension clamp hangs the ABC cables through different angles hence giving them proper support and protection.

To help you understand better, here is a picture of a typical suspension clamp.

As you can see, there is nothing complex about it.

You only need to buy and use it.

Uses of a Suspension Clamp

We have already mentioned the primary function of suspension clamps.

But, it sounds so general, doesn’t it?

Probably, you are looking for the specific functions of suspension clamps.

Here are some specific functions of suspension clamps:

-Suspension clamps protect the conductor right at the installation load.

-The clamps provide a safe and viable mechanical connection regardless of the condition. They achieve this by providing an adequate longitudinal grip control.

This means that the conductor can be released from the clamp only through defined slip loads hence preventing physical damage.

-Suspension clamps control the movement of the conductor. This provides protection against the vibrations that have been induced by strong winds.

Parts of a Suspension Clamp

Just knowing the physical appearance of a suspension clamp is not enough.

It is important that you go further and familiarize yourself with its components.

Here are the parts and components of a typical suspension clamp:

1.The Body

This is the part of the suspension clamp that is responsible for supporting the conductor.

The body is made of an aluminum alloy mainly due to the strength of the material.

It is hard and resistant to stress corrosion.

2.Keeper

This is the part of the clamp that connects the conductor directly to the body.

3.Straps

These are parts of the suspension clamp that transfer load right from the axis of oscillation to the insulator string.

What type of material is used on the straps?

The straps mainly consist of a thick zinc coating.

4.Washers

The importance of this part comes into play when the clamping surface is not perpendicular.

Washers are made of stainless steel and are resistant to corrosion.

5.Bolts and Nuts

Obviously, you know the function of bolts and nuts in any mechanical device.

They are mainly used to complete connections.

Also, the bolts and nuts are made of stainless steel which is known for its strength

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6.Threaded Inserts

Sometimes they are known as the threaded bushing.

But, what role do they play in a suspension clamp?

They are basically fastener elements.

This simply means that they are inserted into an object to add a threaded hole.

Like other major parts of the suspension clamp, they are also made of stainless steel.

Design Requirements of Suspension Clamp

What does the design requirement of a suspension clamp entail?

It ensures that there is proper coordination between the physical and mechanical aspects of the suspension clamp.

Also, design requirements ensure that all parts are in their correct position.

This will facilitate the smooth operation of the suspension fitting.

-Anchor clamp

First, you should be able to move the anchor clamp which is next to the conductor freely.

To achieve this, ensure that the trunnion of the clamp is part and parcel of the body.

-Conductor supporting groove

When buying suspension clamp, ensure that the conductor supporting groove has the right measurements.

Check the measurements as indicated by the suspension clamp manufacturer.

The body and the keeper should not have sharp edges or any form of irregularities.

-The design of the straps

When buying a suspension clamp for overhead, try to check the design of the strap.

Ensure that they are round and their sizes match directly with that of the trunnion.

-Designs for bolts and nuts

Although they may look small, they also have strict design requirements,

When buying a suspension clamp or even aerial cable clamp, check for the positioning of the bolts and nuts.

Ensure that they are well attached to the clamp.

They should be well attached to prevent them from dropping when the clamp is in operation.

When it comes to the design ensure that the bot can protrude outside through the thread.

Mechanical Requirements for Suspension Clamp

When you hear the word  ‘mechanical’, what comes into your mind?

To most of us, we think of the machines and how they operate.

Well, in this context, the mechanical requirement is all about the operation of a suspension clamp.

So, what are these requirements?

First, a suspension clamp should be able to withstand the deformation load without showing any signs of getting damaged.

This is a requirement that should be fulfilled even if the conductor turns at 30 degrees.

Also, the clamp should be able to withstand the bolts and nuts regardless of how tight they may be.

Types of Suspension Clamps

Do you know that there are different variants of a suspension clamp?

In other words, there is no universal suspension clamp.

Instead, you can buy suspension clamps that have a set of particular specifications that will fully meet your needs.

In most cases, each variant is designed for a specific cable.

Here are the most common types of suspension clamps:

-Suspension clamp for ABC cable

-Suspension clamp for opgw

-AGS suspension clamp

-Suspension clamp for ADSS cable

-Double suspension clamp

– Preformed suspension clamps

-Cable suspension clamp u-type

So, which type of suspension clamp do you think will meet your specific needs?

Suspension Clamp Manufacturers

Do you want to buy the best suspension clamp?

Start by looking for reliable suspension clamp manufacturers.

They will help you to find and choose the right suspension clamp.

At Rax Industry, we have been manufacturing and selling high-quality suspension clamps.

Call us whenever you need the best suspension clamps.

FAQ

What is a suspension clamp?

suspension clamp is also called clamp suspension or suspension fitting, it is a general speaking of all kinds of clamps that hang the conductors or cables to the pole or tower.

What does a suspension clamp consist of?

Here are the components of a typical suspension clamp:

• The Body
• Keeper
• Straps
• Washers
• Bolts and Nuts
• Threaded Inserts

What are the types of clamp suspensions?

Here are the most common types of suspension clamps:

• Suspension clamp for ABC cable
• Suspension clamp for OPGW
• AGS suspension clamp
• Suspension clamp for ADSS cable
• Double suspension clamp
• Preformed suspension clamps
• Cable suspension clamp u-type

What are the features of a clamp suspension?

• Suitable for a wide range of ABC cable.
• Quickly and easily installed with no tool required
• For line angles up to 30 degrees to 60 degree
• Protect the ABC cable very well.

If you want to learn more, please visit our website ADSS Suspension Clamp Supplier.