What Is a Suspension Clamp?
An internal suspension clamp is a piece of electronic equipment used for hanging cables or conductors connected to a pole. Additionally, they are also used in suspending cables to electronic towers.
Another role of steel suspension clamps is to guard the conductor while the transmission line is installed on the pole. It also gives a solid connection by assuring an appropriate amount of longitudinal grip on the transmission line. Finally, they prevent the cables from moving too much due to winds and storms.
Components of steel suspension clamps
If you were to look at it from afar, you would think that it is only one huge component, but this is not true. Multiple components make it up, which are the following:
1. The Body
This is the largest part, and the first one people usually see when they first look at one. The body is the overall framework that supports the clamp to the conductor. It is usually resistant to scratches and rust since it is made of an aluminum alloy, making it very sturdy.
This specific part of the clamp is important as it connects the conductor of the transmission line to the body.
3. The Straps
These are the thin string-like components of the clamps. They must transfer the load from the oscillation axis to the insulator string. These parts are sturdy because their body is made of coated zinc materials.
The washers are usually used when the clamping surface is not positioned perpendicularly. Their build is made of steel, so they have the appropriate strength and resistance to corrosion.
5. Bolts and Nuts
With the clamp being a mechanical device, it would also need nuts and bolts to be all secure. Any connection made within it is made possible by the nuts and bolts. These are made of steel, so they are naturally sturdy.
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6. Threaded Inserts
These are parts of the internal suspension clamp that are simply the ones that fasten the threads together. Also, these are inserted where there are threaded holes in the component. Their innate sturdiness comes from their material which is stainless steel.
What are suspension clamps used for?
Their primary role is to hang or suspend a conductor. However, it is not possible that this is the only part it plays in electrical towers. They also give a mechanical connection to the transmission line by providing a good longitudinal grip. Also, they prevent cables from moving.
With these uses listed, it is not hard to see that these clamps are used in projects that include conductors hanging from poles. Their most common applications are in telephone transmission lines and electrical pole lines.
Mechanical Requirements of internal suspension clamp
These mechanical requirements define how they are supposed to be operated. Usually, these items are supposed to be sturdy enough to sustain deformation load without physical deformation or snapping. Additionally, the clamp should be able to sustain the force coming from its nuts and bolts.
Design Requirements of internal suspension clamp
A good and well-designed clamp would ensure a smooth operation between the cables and all the other components. Here are some of the essential design aspects of a good clamp:
- Next to the conductor, the anchor clamp should be free to move as it pleases
- The straps are supposed to be round-shaped and should match the size of the trunnion
- Ensure that the conductor supporting groove fits the measurements of where you will apply it
- Take a good look at the bolts and nuts to see if they fit into the component completely fine optical fiber splitter.
What are the different types of Suspension Clamp?
There are different types of clamps, all with specific sizes and unique uses.
Single and Double Conductor Suspension Set
This type disperses the stress to the preformed rod of the clamp. It greatly minimizes the static and dynamic pressure of the cable or conductor. The effectiveness of the dispersion of stress greatly increases the durability of the conductor.
Double Suspension Set for OPGW Cable
Like its name, this type connects OPGW cables and poles. The clamp heavily reduces the stress on the OPGW cable at its support points. Additionally, this type reduces cable bending, so there isn’t extra loss after installation.
Single Suspension Set for OPGW Cable
Another moniker for this type is the helical suspension set. It is often utilized to hang fiber cables onto straight towers or poles.
Double Suspension Clamp
This steel suspension clamp reduces static pressure at ADSS’s support points. Also, it protects the conductor from the dynamic stress of Aeolian vibration.
Midspan/Long Span Clamp for ADSS cable
Like the double variant, the long one protects the ADSS fiber cable to operate normally and safely under unbalanced load conditions. This type is made out of high-strength aluminum alloy.
Is there a suspension clamp for overhead lines?
There are some made for overhead lines. These clamps are used for the installation and the suspension of fiber cables at straight angles. Usually, the bodies of these clamps are made from hot-dipped galvanized steel with a stainless ring at the hook at the edge of the component.
What are the advantages of using these clamps?
They are very useful in holding cables and conductors in high towers heavily affected by strong winds. These clamps protect the wire against bending, dynamic and static stress due to Aeolian pressure. Also, they help in prolonging the lifespan of the suspended wires above.
What does a suspension clamp do?
FAST connector fiber optics eliminate any polishing process, reducing the installation time and making it more convenient. These connectors also allow easy optical fiber preparation and termination.
Overall, they are more widely used nowadays because of good assembly, quality management, and time reduction.
These field assembly connectors have excellent accuracy and workability in installing and disconnecting fiber connectors. Their structure enables low return loss, thanks to its angle splice technology.
These clamps are a very important piece of equipment that helps control the suspended cables in towers and poles. There are many different uses of these clamps, and as such, they have a lot of different types. Additionally, They are used by big systems such as FTTH Accessories that utilize a lot of fiber cables in their operations.