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1. Core features
1.1 Material properties: Manufactured from high-conductivity aluminum alloys (typically ≥61% IACS) such as 6063,6061, or specialty alloys through specialized processes (e.g., rolling, drawing), these materials exhibit excellent strength and ductility.
1.2 Structural Property：
Tubular hollow structure: This is its most prominent feature. The hollow design enables a larger conductor diameter and surface area within the same cross-sectional area.
Surface condition: Typically smooth tube, or treated with anodizing, spraying, etc. on the surface to enhance corrosion resistance and insulation (when used as a bare conductor).
Insulation options: The conductor can be installed bare on insulator brackets or wrapped with insulation layers (e.g., vulcanized rubber, heat-shrink sleeves, or irradiation-crosslinked polyolefin) to form insulated tubular busbars, providing enhanced safety.
1.3 Electrical and physical properties:
Low skin effect: When alternating current flows through a conductor, the current tends to concentrate on the conductor's surface (skin effect). Tubular structures have a larger effective surface area compared to solid rods with the same cross-sectional area, thereby significantly reducing AC resistance and improving current-carrying efficiency.
Outstanding heat dissipation performance: The hollow structure facilitates internal airflow, while the large surface area enhances external heat dissipation, resulting in lower temperature rise under the same current-carrying capacity.
High mechanical strength: The round tube structure exhibits superior bending and torsional stiffness compared to flat arrays, enabling it to withstand greater electrodynamic forces (e.g., mechanical stresses induced by short circuits).
Corrosion resistance: The natural oxide film on aluminum alloy surfaces and optional coatings enhance environmental adaptability.
2. Product Advantages
2.1High current-carrying efficiency and material-saving:
With the same current-carrying capacity, this material reduces metal consumption by 15%-30% compared to copper bars due to its low skin effect, resulting in lighter weight and significant cost advantages (particularly when replacing copper bars). Under the same cross-sectional area, it allows for higher current flow (especially in AC systems).
2.2 Excellent heat dissipation and reliable operation:
Lower temperature rise indicates reduced resistivity growth, creating a virtuous cycle that results in lower long-term operational energy consumption and extended lifespan. Simultaneously, it mitigates failure risks such as insulation aging and connection oxidation caused by overheating.
2.3 Excellence in mechanical and safety performance：
Large stiffness: the span can be larger, the number of support points can be reduced, and the installation structure can be simplified.
Excellent seismic performance: The circular cross-section and isotropic stiffness enhance its resistance to vibrations.
High safety:
No sharp corners, uniform electric field distribution, high corona discharge initiation voltage, suitable for higher voltage levels.
With full insulation, it prevents phase-to-phase short circuits and electric shocks, achieving an IP68 protection rating.
2.4 Easy installation and maintenance：
The connection is typically achieved using specialized hardware (wire clamps) or through heat welding, resulting in fewer connection points and a lower failure probability.
The structure is simple and occupies little space (especially in the vertical direction), which is conducive to compact space arrangement.
The surface is smooth, less dust accumulation, and low maintenance workload.
2.5 Aesthetics and Environmental Protection：
The shape is neat and tidy, which is in line with the modern industrial aesthetics.
Aluminum alloy materials can be 100% recycled, which is environmentally friendly.
3. Application Scenarios
3.1 New Energy Sector：
Photovoltaic power station: This system collects high-current loads from inverters to the low-voltage side of step-up transformers.
Energy storage station: a high-current transmission channel connecting battery clusters to the Power Conversion System (PCS).
Electric vehicle charging stations: particularly high-power supercharging stations, must deliver high currents to multiple charging piles.
3.2 Large industrial plants: such as automobile manufacturing, metallurgy, and chemical enterprises, supply power to heavy equipment including presses, rolling mills, and large motors.
3.3 High-rise buildings and commercial complexes: Functioning as the main busbar within vertical shafts, it supplies power to distribution rooms across floors, saving space and enabling quick installation.
3.4 Ship and offshore platform: space compact, environment corrosion strong, equipment mechanical strength and corrosion resistance requirements are high.
