Waterproof busbar trunking This system consists of a protective enclosure made of steel or aluminum plates, conductors made of copper or aluminum, and insulation materials such as air, paper, or epoxy resin. With the development of the real estate industry, these high-rise buildings, due to their large number of residents, consume enormous amounts of power. Traditional conventional cables can hardly meet the demands of transmitting high currents, and the frequent parallel installation of multiple cables often causes significant trouble during on-site installation, construction, and subsequent maintenance. It was in response to these challenges that a new type of power distribution system—the busbar trunking system—was born.

　　Busbar trunking systems offer numerous advantages: they are compact in size yet have large capacity; their design and installation are flexible and convenient; they are non-combustible, safe and reliable, and boast a long service life. The operating temperature of the insulation material used in busbar trunking systems is 105 degrees Celsius. Given that newly developed insulation materials today can operate at temperatures exceeding 140 degrees Celsius, these systems have significantly greater overload capacity than cables.

　　The waterproof busbar trunking boasts excellent water resistance and corrosion resistance.

　　The waterproof busbar trunking is a non-metallic enclosure-type busway, manufactured by directly casting copper busbars sealed within a specially formulated composite resin and precisely selected mixed materials. It’s made from high-performance insulating materials, featuring no air gaps or chimney effects. The busbar’s smooth surface and robust construction prevent arcing and overloading from causing short circuits. With an ingress protection rating of IP68, it can remain submerged in water for extended periods and withstand the intense spray from fire hydrants. Utilizing integral vacuum casting, the busbar trunking is completely free of gaps.

　　Features of waterproof busbar trunking

　　It uses non-toxic insulating materials that do not release toxic gases even when exposed to flames, ensuring personnel safety. It also employs special thermally conductive materials that provide excellent heat dissipation under normal operating conditions.

　　1. Water resistance

　　Cables can usually continue to function even after being immersed in water, but ordinary busbars are not waterproof. Even busbars rated IP54 still face the risk of moisture ingress, which can degrade their insulation performance. Water poses an obstacle to the use of dedicated busbar lanes, yet these busbars can remain submerged for extended periods without experiencing a drop in insulation resistance.

　　2. Corrosion resistance

　　The steel casing of the mother groove is susceptible to acid and alkali corrosion, cannot withstand prolonged erosion from rain and snow, and lacks resistance to salt spray.

　　A resin-based, fully enclosed busbar channel is a busbar channel without a metal enclosure. In addition to its insulating function, the special composite resin can withstand external impacts of up to 15 joules, eliminating the need for steel casing maintenance. The composite resin used can operate reliably for extended periods at temperatures as low as -50°C.

　　Busbar trunking systems are completely sealed—meaning that all connectors in the wiring ducts are molded with resin, enabling them to operate reliably for extended periods even in harsh environments such as those exposed to acids and alkalis.

　　3. Insulation performance

　　According to the standard, the insulation resistance of busbar trunking must be above 20 MΩ. Even at an ambient temperature of 100°C, the insulation resistance of the busbar can still reach over 100 MΩ.

　　4. Safety Performance

　　To prevent phase-to-phase short circuits, the busbars must be free of burrs to avoid such short circuits in densely packed busbar trunking systems. During manufacturing, any floating debris must be kept from entering the enclosure. Although the insulation layer can be thickened, it cannot completely eliminate the possibility of short circuits. Air-insulated busbar trunking systems and double-insulated busbar trunking systems virtually eliminate the risk of short circuits.

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