Molding Process And Cold Shrinkage Technology: A New Path To Improve The Reliability Of Parallel Groove Clamp Connections

The stable operation of power lines depends on the precise construction and scientific installation of fittings. In modern power distribution network construction, the parallel groove clamp connector is a core component for realizing conductor current transfer and mechanical connection, and its technological evolution has always revolved around improving construction efficiency and contact performance. The combination of molding production and cold-shrink packaging technology provides a higher standard of protection for conductor connections.

The Impact of Molded Structure on Contact Performance

Molding technology gives the pg clamp connector clamp precise geometric dimensions. Through high-precision mold production, the clamp slots fit the conductor contour perfectly, significantly increasing the effective contact area. This manufacturing process eliminates internal porosity that may exist in traditional casting, enhancing the overall mechanical strength of the fittings. In actual operation, the pg clamps clamp made of aluminum alloy, combined with anti-oxidation composite grease, can quickly break down the oxide film on the conductor surface, maintaining low and stable contact resistance.

Sealing Protection and Cold Shrink Installation Process

The molding installation of single bolt parallel groove connector can be achieved by fixing the wires using a cold shrink process. This method changes the limitations of traditional tape insulation, utilizing the pre-expansion and springback characteristics of the material to achieve physical wrapping.

• Support bar removal: During installation, pulling the internal plastic support bar causes the cold-shrink tubing to radially shrink at a preset position.

• Radial pressure transmission: The shrinkage process generates a uniform clamping force, tightly covering the interface between the clamp and the conductor.

• Interface sealing and filling: The sealant within the inner layer of the cold-shrink material is compressed to fill the gaps, preventing moisture penetration.

This elastic recoil force of the cold-shrink assembly self-compensates with the thermal expansion and contraction of the conductor. This all-weather protective barrier ensures that the parallel groove clamp maintains excellent insulation levels even in harsh environments such as salt spray and humidity. Through the synergy of molding and cold-shrink processes, the long-term operational reliability of the wiring connection point has achieved a qualitative leap.