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Performance characteristics of dense bus duct

2025-05-13

Dense Bus Duct is a closed metal device composed of copper or aluminum busbars, which is widely used in high-power power distribution, especially in indoor low-voltage power transmission trunk projects. With the increase in the frequency of wire and cable replacement, the use of dense bus duct has been widely promoted at home and abroad, especially in Hong Kong, Macao and Guangzhou in my country.

In China, especially in Guangzhou, Bus Ducts are usually used in distribution rooms of buildings with 12 floors or more, and more than 90% of the main lines leading to the power distribution lines of the floors use bus ducts; in addition, bus ducts are also usually used between 630KVA transformers and distribution cabinets. This distribution device not only meets the needs of modern high-rise buildings and large factories for power distribution, but also effectively copes with the problems of large current transmission and safety and stability.

As a current distribution device, dense bus duct plays a vital role in the power system. It uses copper or aluminum as conductors, uses non-olefinic insulation support and is installed in a metal trough, which is suitable for occasions where large current transmission is required. Especially in modern high-rise buildings and large workshops, facing huge power demand, bus ducts have become a reliable and economical solution.

Main features of intensive bus duct

Excellent current carrying capacity and current density
The intensive bus duct is made of copper or aluminum, has a larger cross-section, and can carry a larger current. Compared with traditional cables, it has a higher current density and a correspondingly lower product cost. The structure of its busbar connection and socket is complex and difficult to manufacture, but this is precisely the guarantee of its high current carrying capacity.

Compact structural design
The design of the intensive bus duct focuses on small size and compact structure, making it very suitable for environments with limited space. Its efficient current transmission capacity makes it an ideal distribution system for high-rise buildings and large industrial plants.

Excellent heat dissipation performance
The busbar design with a large width-to-thickness ratio is adopted. The heat dissipation surface of the busbar is in direct contact with the shell through insulating materials, which can effectively reduce the system temperature and reduce the risk of overheating by strong convection heat dissipation. Good heat dissipation enables the system to operate stably for a long time, especially under high current load conditions.

Low voltage loss
The busbar inductance of the intensive bus duct is low, so the voltage loss is small, which can ensure the voltage stability at the end of the line during long-distance power transmission. This feature is very important for long-distance power transmission and can improve the overall operating efficiency of the system.

Good stability and anti-interference ability
Since the shell of the bus duct is made of solid metal material, it can withstand greater mechanical stress and ensure stability under strong current impact. At the same time, the dense bus duct has strong anti-electromagnetic interference ability to ensure the safe and reliable operation of the power system.

Simple maintenance management
The dense bus duct has a reasonable structure, easy installation, and convenient maintenance and repair. The system can be inspected and maintained relatively easily, reducing maintenance costs and downtime, and is especially suitable for industrial and commercial applications with long-term stable operation.

Wide applicability
Dense bus duct is widely used in various types of buildings and industrial facilities, especially in high-rise buildings, industrial plants, shopping malls, hospitals, airports and other places with large power loads. It can not only replace traditional cable systems, but also effectively improve the efficiency and safety of power transmission.

Application field
The application range of dense bus duct is very wide, covering modern buildings, industrial facilities, commercial complexes and public facilities. Its high current carrying capacity, heat dissipation performance and structural advantages make it an ideal choice for building power distribution, factory workshop power transmission and large-scale Power Distribution Systems.
In summary, the dense bus duct has become an indispensable and important part of the contemporary power system due to its excellent current transmission capacity, low voltage loss, excellent heat dissipation performance and anti-interference ability. It is particularly suitable for places that require a large amount of power supply, such as large buildings, high-rise facilities and industrial enterprises.