Strain Clamps

  • It is dimensioned and designed taking into account the characteristics of the conductor being therefore a conductor’s hardware and not a string hardware.
    • A correct clamp design must take into account the following aspects:
    • General characteristics of the conductor.
    • Type of conductor
    • Maximum working temperature.
    • Accumulation of stresses on the wires of the conductor at the points of contact with the clamp.
    • Extinguishing voltage of the corona effect.
  • All aluminum castings are manufactured from first fusion aluminum alloy.
  • This results in optimal mechanical characteristics and avoids the corrosion of the parts (very low iron content).


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Product Description


  • The strain clamps are used to tie the conductor and join it to the string of insulators in the auction towers, so these must have a resistance capable of withstanding the 900 / or -950 / o of the breaking load of the conductor depending on the type of clamp. It’s designed to avoid the appearance of effluvia, minimize the effects of oscillations and vibrations, and limit the compression efforts on the conductor to acceptable levels.
  • There are 2 large groups, detachable mechanical clamps and compression clamps, not removable.
  • Mechanical clamps:
    These clamps are composed of a body in which the conductor is housed, a shoe that is installed on the conductor and some blades that exert pressure on the shoe. The installation is simple and the guaranteed mechanical load for this type of clamps is 900 / o of the nominal breakage load of the conductor on which it is going to be installed. It is very important to apply the specified tightening torque for each clamp.
    Compression clamps:
    These clamps are composed of a tubular body that is compressed on the outer layer of the conductor, a shovel welded to the body, a bolted branch to the blade that ensures electrical continuity and a steel plunger that joins the clamp to the string.