Installation specification requirements for compression type tensile clamps in power lines

In the line construction, the compression type tension clamp needs to bear the full tension of the wire, and the tension clamp itself needs to be added as an electric conductor to the operation of the line, so the mechanical properties and electrical performance requirements of the tensile clamp are required. It is comprehensive. The following mainly introduces the installation process requirements that the compression type tension clamps need to pay attention to during installation.

First, let's introduce the compression type tension clamp. The main components of the compression type tension clamp are aluminum tube and steel anchor. In the installation of the tension clamp, the aluminum tube and the steel anchor play a completely different role. . The role of the steel anchor is to link the steel core of the steel core aluminum stranded wire, and then the aluminum tube is applied, and the pressure is applied to the metal to produce a plastic deformation, thereby fixing the wire and the wire clamp.

It can be seen that the role of the steel anchor is mainly to fix the wire. Therefore, the steel anchor of the compression type tensile clamp is subjected to all the breakage of the wire, and the main mechanical properties of the compressive tensile clamp are provided by the steel anchor. Although the steel anchors of the tension-resistant clamps are mostly made by the forging process, the compression-type tensile clamps are classified into two types: the hydraulic type tensile clamps and the burst type tensile clamps, depending on the crimping process.

When hydraulic pressure is applied, the steel mold needs to be hydraulically within the specified limits and with the cooperation of the hydraulic press. When detonating pressure, one explosion pressure or two explosion pressure can be used. One explosion pressure is a one-time compression molding. The second explosion pressure is to first press the steel anchor, and then put on the aluminum tube and then perform a burst pressure.

Explosive-type tensile clamps are mostly used in transmission and distribution lines and on the busbars of power plants. When ordinary tensile clamps are installed with large-section steel-cored aluminum strands, they must be used when the requirements of the nest cannot meet the specified values. The type of tension clamp. The burst-type tension clamp can provide a larger grip for the wire, and it is easier to reach 95% of the maximum breaking force of the large-section steel-cored aluminum strand. This is necessary for the safety of the power circuit and is often used when the bus is installed. Type of clip.

The explosion-proof type tensile clamp cannot be disassembled after installation. Therefore, in the production specification of the electric power fitting, there is a strict requirement for the service life and production process of the explosion-proof tension clamp.