Connecting Hardware Can Be Used To Connect The Entire Bolt-type Tension Clamp.
A bolted type tension clamp serves as a critical component in overhead line systems, specifically designed to secure conductors to tension towers or poles. These fittings ensure the mechanical stability of the line by creating a high-strength grip through bolted pressure. Proper installation of a dead end strain clamp prevents conductor slippage during extreme weather conditions or high physical loads.
Technical Functions of a Bolted Dead End Clamp
The primary role of this hardware involves transferring the physical tension of the cable to the supporting insulator string. By using a series of high-strength bolts, the clamp distributes pressure evenly across the conductor surface. This design choice protects the cable from localized deformation while maintaining a reliable electrical connection throughout the lifespan of the power distribution network.
Technical Definition for Line Hardware:
A bolted type tension clamp is a mechanical fitting used to terminate overhead conductors. It utilizes multiple U-bolts or side bolts to apply clamping force, securing the wire within a grooved body to handle longitudinal tension effectively without damaging the internal core of the cable.
Components and Specifications
Selection depends on the conductor diameter and the required breaking strength of the assembly. Engineers typically categorize these fittings based on the material of the conductor, such as ACSR or All-Aluminum Alloy. The following table outlines the standard technical parameters for common industrial applications:
| Component Feature | Specification Detail | Material Standard |
| Body Material | High-strength Aluminum Alloy | ASTM B209 |
| Hardware Finish | Hot-dip Galvanized Steel | ISO 1461 |
| Fastener Type | M12/M16 High-tensile Bolts | Grade 8.8 |
| Slip Strength | 95% of Conductor UTS | Industry Standard |
Installation Procedures for Tension Systems
Successful deployment of a bolted type tension clamp requires precise torque application and alignment. Following a structured sequence ensures the longevity of the connection:
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Surface Preparation: Clean the conductor surface and the internal groove of the clamp to remove oxidation.
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Positioning: Place the conductor into the dead end strain clamp body, ensuring it sits flush against the curved seat.
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Bolt Tightening: Secure the bolts in a diagonal pattern to reach the specified Newton-meter torque value.
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Verification: Inspect the gap between the pressure plate and the body to confirm uniform compression.
Operational Advantages in Power Infrastructure
Integrating a bolted dead end clamp into a grid offers significant maintenance benefits compared to compression-style alternatives. Since these fittings are removable, technicians can adjust the sag or replace segments of the line without cutting the conductor. This flexibility reduces downtime during emergency repairs and simplifies routine inspections of the overhead hardware.
Modern designs prioritize corrosion resistance, using specialized coatings to withstand salt spray and industrial pollutants. By choosing high-quality materials, utility providers ensure that the connection fittings maintain structural integrity for several decades of continuous service.
