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A dead-end clamp, often called an anchor or tension clamp, is a hardware fitting designed to terminate and hold cables in overhead line systems securely. They are critical components used in power transmission and communication lines, primarily for securing conductors within the line, bearing tension, and attaching conductors to supporting structures such as towers or utility poles. This guide will provide a full overview of the problem with dead-end clamps, analyzing and presenting it from multiple perspectives, as well as our company’s dead-end clamp products.
It strives to provide you with a comprehensive and clear overview of dead-end clamps so that you can select the best one for your needs.
What's A Dead End Clamp?
First, let’s introduce what a dead-end clamp is. A preliminary understanding of this component will help build context for its functionality from multiple perspectives.
A dead-end clamp, sometimes referred to as a dead clamp, is a mechanical component used extensively in the power industry, particularly in power lines, distribution systems, and telecommunication infrastructure. Its primary role is to provide secure mechanical anchoring by fastening the ends of wires or conductors to utility poles, towers, or other support structures. This ensures the safe, stable operation of the cables under varying environmental and mechanical loads.
To meet the stringent safety, reliability, and durability requirements of electrical systems, the clamp features a compact and slender design. It is typically made from corrosion-resistant aluminum alloy casting, which not only provides the necessary mechanical strength to withstand high cable tension during operation but also ensures electrical conductivity, helping reduce energy loss and maintain efficient current transmission.
The wedge inside the clamp is constructed using weather-resistant and UV-resistant insulating materials, effectively preventing current leakage and potential short circuits. The hoop is usually made from flexible, corrosion-resistant stainless steel or steel wire, enhancing the overall system stability and extending the dead-end clamp’s service life.
These three key structural components—the body, wedge, and hoop—directly influence the total performance of the clamp. Therefore, when selecting a dead-end clamp for use in power lines, particular attention should be given to the materials and performance characteristics of each part.
What is the Dead-End Clamp Assembly?
Dead end clamps consist of multiple components, each playing a crucial role in securing the conductor. Understanding these parts can help in selecting the right cable dead end clamp for specific applications.
Main Components:
Main Clamp Body: Typically made from high-strength aluminum alloy to provide mechanical support.
Wedge: Composed of UV-resistant insulating plastic, ensuring cable stability and insulation.
Bail Loop or Clevis Pin: Made of stainless steel or galvanized steel, providing secure anchoring.
Stirrup (for certain models): Allows better adaptability for specific conductor sizes.
Bolts & Nuts: Used to firmly secure the clamp to the conductor and support structure.
Each part is designed to work together, ensuring the dead end clamp for ABC cable provides long-term stability and safety.
How Do Dead End Clamps Work?
The primary function of a dead end clamp is to grip, support, and anchor conductors. These clamps apply mechanical tension to prevent cables from loosening or breaking under stress.
Operational Process:
Cable Insertion: The conductor is inserted into the clamp’s groove.
Tensioning Mechanism: The wedge system ensures a firm grip on the cable, preventing movement.
Load Bearing: The clamp resists mechanical loads, minimizing conductor sag.
Electrical Transmission: Conductors made of aluminum or copper alloy allow smooth energy flow.
Adjustable Fit: Bolts and nuts help secure the clamp while allowing slight adjustments based on conductor size.
Dead clamps are designed to provide long-term stability and prevent conductor slippage or excessive strain in overhead line systems.
