What You Need to Know About Suspension Clamp
What You Need to Know About Suspension Clamp
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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. They also provide a solid connection by ensuring an appropriate amount of longitudinal grip on the transmission line. Finally, they prevent the cables from moving excessively due to winds and storms.
Components of Steel Suspension Clamps
From afar, it may appear as a single large component, but it comprises multiple parts:
- The Body
The body is the largest part and supports the clamp to the conductor. Made of an aluminum alloy, it is resistant to scratches and rust, making it very sturdy. - Keeper
This part connects the conductor of the transmission line to the body. - Straps
Thin, string-like components that transfer the load from the oscillation axis to the insulator string. They are sturdy due to their coated zinc material. - Washers
Used when the clamping surface is not positioned perpendicularly. Made of steel, they offer strength and resistance to corrosion. - Bolts and Nuts
The nuts and bolts secure the mechanical connections. Made of steel, they are naturally sturdy and resistant to corrosion. - Threaded Inserts
These fasten the threads together and are inserted into threaded holes. Made of stainless steel, they are extremely durable.
What Are Suspension Clamps Used For?
Their primary role is to hang or suspend a conductor, but they also provide a mechanical connection to the transmission line by offering a good longitudinal grip and preventing cable movement. Common applications include telephone transmission lines and electrical pole lines.
Mechanical Requirements of Internal Suspension Clamp
Suspension clamps must be sturdy enough to withstand deformation load without snapping. Additionally, they should withstand the force applied by their nuts and bolts.
Design Requirements of Internal Suspension Clamp
A well-designed clamp ensures smooth operation between the cables and other components:
- The anchor clamp should move freely next to the conductor.
- Straps should be round-shaped and match the size of the trunnion.
- Ensure the conductor-supporting groove fits the measurements of your application.
- Verify that bolts and nuts fit perfectly into the component.
Types of Suspension Clamps
There are several types of clamps, each suited for specific applications:
Single and Double Conductor Suspension Set
Disperses stress to the preformed rod, minimizing static and dynamic pressure on the cable.
Double Suspension Set for OPGW Cable
Connects OPGW cables and poles, reducing stress on the cable at support points and minimizing bending loss.
Single Suspension Set for OPGW Cable
Commonly known as a helical suspension set, typically used for hanging fiber cables onto straight towers or poles.
Double Suspension Clamp
Reduces static pressure at ADSS's support points and protects the conductor from dynamic stress caused by Aeolian vibration.
Midspan/Long Span Clamp for ADSS Cable
Similar to the double variant, this type allows the ADSS fiber cable to operate normally under unbalanced load conditions, made of high-strength aluminum alloy.
Is There a Suspension Clamp for Overhead Lines?
Yes, there are clamps specifically made for overhead lines, used for the installation and suspension of fiber cables at straight angles. These clamps are typically made from hot-dipped galvanized steel with a stainless steel ring at the hook.
Advantages of Using These Clamps
Suspension clamps are highly effective in securing cables and conductors, especially in high towers affected by strong winds. They protect wires against bending and both dynamic and static stress due to Aeolian pressure, thereby prolonging the lifespan of suspended wires.
What Does a Suspension Clamp Do?
FAST connector fiber optics eliminate the need for a polishing process, significantly reducing installation time and making it more convenient. They also allow for easy optical fiber preparation and termination. Field assembly connectors are increasingly popular for their excellent accuracy and ease of installation, thanks to angle splice technology.
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Conclusion
Suspension clamps are essential for controlling suspended cables in towers and poles. They have diverse uses and come in various types, catering to different requirements. Companies like FTTH Accessories, which utilize numerous fiber cables, often depend on these high-quality clamps.
China Customized Suspension Clamp For OPGW/ADSS
Application:
The suspension clamps are primarily used for suspending optic cables or conductors in overhead lines. When used for conductor and ground wire installation in ADSS cables and HV transmission lines, the line corner angle is recommended to be ≤30°. ADSS preformed suspension clamps mainly support suspended ADSS cables and are suitable for use on transmission lines with a turning angle less than 30 degrees.
Advantages:
ADSS preformed suspension sets lessen static stress on optical cables at suspended points and enhance anti-vibration capacity. They restrain wind vibration, protecting optical cables from bending stress and additional damage. The helical suspension clamps connect ADSS cables to poles or towers, decreasing static stress and improving their durability.
Order Direction:
- Choose the suitable tension clamp according to the fiber optic cable's ultimate tensile strength, running span, and outer diameter.
- For tower corner angles <25° , one suite is sufficient. A suspension clamp suitable for a span of 150m is available, offering simple structure, easy installation, and low cost for 10KV city network distribution lines.
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