High-quality Selection And Installation: How To Maintain Long-term Circuit Continuity With Cable Terminals

In complex power systems, even a small temperature rise at any connection point can escalate into a systemic power outage risk. The quality of the connection directly affects the voltage quality at the load end. Maintaining smooth current flow during long-term operation requires careful attention to the physical connections at the connection points from the outset.

Selecting Matching Cable Terminals

To achieve low resistance at the connection, material selection is the first step. Generally, copper is the preferred material due to its excellent conductivity. When dealing with aluminum core cables, using cable lugs, a copper-aluminum transition material, is a more scientific approach to prevent electrochemical corrosion.

Besides material, precise specifications are equally important:

• Cross-sectional area matching: The conductor must fill the connection cavity to reduce contact resistance caused by gaps.

• Plagging process: Surface tinning slows down the oxidation process and maintains the conductivity of the metal surface in humid environments.

Standardized cold pressing process improves connection strength

Physical crimping is not just about deforming the metal, but also about achieving tight molecular contact. Using professional hydraulic crimping tools with corresponding molds, wire lugs can be bonded to the wire core as a single unit. This level of tightness can withstand the physical vibrations of the equipment during operation, maintaining mechanical strength.

During crimping, the wire stripping length must be just right. Too long will expose the conductor, increasing the risk of flashover; too short will result in insufficient cross-sectional area, leading to localized overheating.

Key Points for Daily Inspection of Cable Terminals

During inspections, maintenance personnel can use an infrared imager to observe the connection points. If the temperature at the electrical lugs device is found to be significantly higher than the cable itself, it often indicates loose bolts or metal fatigue. Timely cleaning of surface dust and oil, combined with the wrapping of insulating sleeves, can significantly improve the stability of the entire circuit.