Six Major Application Advantages of Busbar Trunking Systems Over Cables in Modern Buildings
Release time:
2022-03-01
Source:
The power distribution trunk in modern buildings plays a role as vital as the human aorta; any failure can lead to severe consequences. Prior to the 1980s, stable cables were widely used in modern construction. However, with the rapid urban development and the sharp increase in building electrical loads, the limitations of cables—such as their difficulty in being disconnected and their limited capacity—have become increasingly apparent. Consequently, busbar trunking systems, which offer large capacity and convenient branching, have been extensively adopted in various modern buildings, replacing traditional cables. Let us now explore the six major application advantages of busbar trunking over cables in contemporary architecture.
The power distribution trunk lines in modern buildings play a critically important role, much like the human aorta; any failure can lead to severe consequences. Prior to the 1980s, modern buildings widely employed cables with excellent stability. However, with the rapid urban development and the sharp increase in building electrical loads, limitations such as the difficulty of disconnecting cables and their limited capacity have become increasingly apparent. At this point, high-capacity, easily branched Busbar trunking Instead of cables, busbar trunking systems are widely used in various modern buildings. Let’s now explore the six major application advantages of busbar trunking systems over cables in contemporary construction!
1. High current-carrying capacity and low power loss
Single Busbar trunking Its high rated operating current of 6,300 A can meet the power demands of today’s heavy-load applications. By contrast, a single circuit cable has a much lower rated operating current of only 800 A. The busbar trunking system offers stable current-carrying capacity, thereby minimizing unnecessary power losses. In contrast, routing cables in sealed trays leads to increased, avoidable power losses.
2. Excellent cooling conditions, resulting in minimal temperature rise.
Busbar trunking systems consist of flat conductors enclosed in insulating material that also serves as thermal insulation; heat is dissipated through air conduction and radiated outward via the external metal enclosure. Compared with round-conductor cables and pre-terminated branch cables, busbar trunking systems offer superior heat dissipation and lower impedance.
3. Foldable for convenience and high adaptability
Busway systems are easy to disconnect; when adding equipment, simply install an additional tap-off box nearby. To increase capacity, merely replace the rating of the protective device inside the tap-off box. After disconnecting the prefabricated branch cable, a long parallel cable must be reinstalled between the distribution cabinet and the load, and the power supply must be de-energized for safe operation. A fault in one circuit can compromise the safety of adjacent circuits.
Long service life and high safety performance
Busway systems boast a service life of over 30 years and offer high operational safety. Thanks to their ability to withstand high short-time current levels, they can be equipped with specialized protective devices—such as fuses or circuit breakers—at the plug-in boxes of branch circuits, thereby reducing the number of inherent fault points in the system. In contrast, cable lifespans rarely exceed 15 years; aging cables are prone to failures, and each floor’s tap-off protection requires separate control and protection measures in the distribution room.
Easy to install and requires minimal ongoing maintenance.
Busbar trunking systems feature a compact structure and minimal space requirements, as they are supported by dedicated mounting brackets that eliminate the need for additional supports. During routine maintenance, it is sufficient to measure temperature rises on the enclosure, new bolts, and wiring boxes. In the event of a fault, only the faulty plug-in unit needs to be replaced, without disrupting power transmission or distribution to other equipment; moreover, the components can be disassembled and reused. By contrast, cable installations have a complex layout: overhead routes require cable trays, while underground routes necessitate trenching, resulting in high construction costs. Furthermore, when a fault occurs, the entire circuit must be shut down, replacement takes a long time, and the resulting losses are substantial.
6. Strong overload capacity and excellent temperature control
Busbar trunking Insulating materials with a service temperature rating of 100°C or higher are used. For example, busbar trunking systems employ DuPont polyester film with a Class B insulation rating of 130°C. In addition, the busbar trunking enclosure is made of metal, which is highly flammable yet offers excellent fire resistance. As mentioned above, compared with cables in terms of current-carrying capacity, safety, service life, energy efficiency, and ease of installation, busbar trunking systems offer numerous application advantages. It is believed that in the near future, busbar trunking systems will be increasingly adopted in industrial plants, high-rise buildings, commercial complexes, and rail transit systems—replacing cables as the preferred solution in these applications.
The above is the introduction to Busbar trunking Here are the six major advantages of using cables in modern construction. For more information, please feel free to contact us at any time!
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