Waterproof busbar trunking Its structure is simple and immediately obvious at a glance, but producing a qualified mother groove in manufacturing is not so straightforward—many details require careful attention.

　　Currently, the housings of waterproof busbar trunking systems are mostly made from steel and aluminum. Steel plates are bent or roll-formed, while aluminum plates are also bent. Profiled sections are produced through one-time extrusion. To maximize profits, some manufacturers mix aluminum and steel materials during the production process. However, since steel and aluminum have significantly different coefficients of thermal expansion, this mixture can lead to damage caused by stresses generated during thermal expansion and contraction. To avoid being deceived, you must be extra vigilant when making your purchase. Aluminum profiles, once extruded in a single step, can be shaped into a wide variety of complex forms. Not only do they boast aesthetically pleasing designs, but they also offer much greater strength than steel—though at the cost of higher production expenses.

　　The conductor materials used in waterproof busbar trunking systems include copper, aluminum, aluminum-copper alloy, and copper-clad aluminum. Among these, copper bars offer superior performance but come with a higher cost. Currently, the most commonly used material is the copper-aluminum composite bar, in which copper accounts for 20% of the composition. This composite bar boasts high interfacial bonding strength and a conductivity rate that closely matches that of pure copper bars, making it an effective substitute for copper bars while significantly reducing costs—its price per meter is only 52% of that of pure copper bars. However, the manufacturing technology for copper-aluminum composite bars is highly demanding and must ensure that the specified interfacial bonding strength is achieved. Otherwise, during processes such as shearing, punching, or bending, the copper and aluminum layers may delaminate, compromising the quality of the busbar trunking system. Previously, methods like embedded welding and rolling were employed, using mechanical pressure to join copper strips and aluminum sheets. Yet, these methods resulted in an excessively thin bonding layer with insufficient interfacial strength. Today, the solid-liquid fusion process is widely adopted. In this process, localized melting of the copper layer at the interface facilitates diffusion between the copper and aluminum, thereby achieving a robust copper-aluminum composite bond. Composite bars produced via this method exhibit high interfacial strength and remain free from delamination during processing.

　　The insulating materials used in waterproof busbar trunking systems have very high requirements. They must meet Class B or higher in terms of flame retardancy, moisture resistance, sufficient mechanical strength, and temperature resistance. Additionally, they should possess adequate insulation performance, be smoke-free and non-toxic, and exhibit excellent aging resistance. Currently, the most commonly used materials are polyester films—specifically, polyolefin heat-shrink tubing prepared via radiation crosslinking technology. Among these, DuPont PET film stands out for its superior performance and is now widely employed to wrap the entire busbar trunking system, particularly in densely packed configurations.

　　Methods for Selecting Waterproof Busbar Trays

　　When selecting busbar trunking systems, customers are advised to opt for high-density busbar trunking systems if their budget allows. However, there are many models available, and the choice should be made based on the specific application environment. Similarly, the conductor materials used in high-density busbar trunking systems fall into three categories: copper bars, aluminum bars, and copper-aluminum composite bars, with significant price differences among them.

　　The differences in insulating materials, as well as variations in the casing’s material and structure, can all affect heat dissipation performance. Capacitors also differ depending on their model; therefore, it’s essential to select a model that matches your actual needs, avoiding both overloading and wasteful investments in oversized capacitors. Specifically, you also need to take into account the specific usage environment and its unique requirements. Since busbar trunking systems come in various shapes and sizes depending on their type, custom manufacturing may sometimes be necessary to meet the demands of particular environments. As a result, when customers purchase busbar trunking systems, lacking specialized knowledge, they are easily misled by unscrupulous vendors—even if they pay a good price, they may still fail to acquire a product that truly suits their needs.

　　The above content has been compiled for you by the busbar trunking system manufacturer. If you have any other questions... PPR pipes, HDPE pipes, antifreeze pipes For any questions, please give our company a call. You’re welcome to come and consult with us.

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