Bolt-type Tension Clamp Installation Tutorial: Why Can The Conductor Be Tightly Pressed Into The Wavy Groove?

A bolt-type tension clamp secures overhead conductors through mechanical friction generated by tightening bolts. The internal wavy groove increases the contact surface area and creates a wave-bending effect on the conductor. This interlocking design prevents slippage under high tensile loads without damaging the wire structure.

How the Wavy Groove Secures Overhead Lines

The bolted type strain clamp relies on a specific wavy geometry to maximize holding power. When bolts are tightened to a standard torque of 44 Newton-meters, the conductor conforms to the undulating channel. This configuration alters the line of force, transforming straight tensile tension into multi-directional gripping friction that locks the wire firmly in place.

Installation Steps for the Dead End Strain Clamp

Proper execution ensures long-term grid stability and prevents mechanical failures.

Step 1: Preparation and Alignment

Clean the conductor surface thoroughly to remove aluminum oxide layers. Place the conductor into the wavy groove of the dead end strain clamp, ensuring the wire extends past the keeping piece by at least 100 millimeters for secure anchoring.

Step 2: Torque Application

Fit the pressure plate over the wire. Tighten the bolts gradually in a diagonal sequence using a calibrated torque wrench. Alternating sides prevents uneven pressure distribution within the bolted dead end clamp, achieving uniform compression across the entire wavy profile.

Secure installation of a bolt-type tension clamp guarantees reliable mechanical support for overhead transmission lines. Adhering to precise torque values and utilizing the mechanical advantage of the wavy groove eliminates line slippage, ensuring stable electrical connectivity and structural safety across the power distribution network.