What are the key features of a high-quality tension clamp for ACSR conductors?

2025-08-16

Tension clamps for ACSR conductors, particularly for full-tension applications, are highly engineered products. There are two main types: compression-type and bolted-type. Regardless of the type, a quality clamp should have the following features:

  1. High Holding Strength: The clamp must have a rated holding strength that is at least 95% of the conductor's ultimate tensile strength. For ACSR Rabbit, this means the clamp must be able to withstand a minimum of 17.5 kN of force without slipping or damaging the conductor.

  2. Corrosion Resistance: The clamp is a permanent fixture in an outdoor environment. It must be made from high-quality, hot-dip galvanized steel or aluminum alloy to resist corrosion.

  3. Proper Design for ACSR: The clamp's design must account for the unique construction of ACSR. In compression-type clamps, the steel core and aluminum strands are compressed separately to ensure a secure grip on both materials. In helical dead-end clamps, pre-formed aluminum rods wrap around the conductor, providing a uniform grip that distributes stress and protects the outer aluminum strands.

  4. Ease of Installation: While a permanent connection, a good clamp should be designed for efficient installation in the field. Our compression-type clamps, for example, are designed to work with standard hydraulic presses and dies, ensuring a reliable connection every time.

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