A Brief Discussion of the Characteristics of Busbar Trunks
Release time:
2022-01-29
Source:
Busway is a novel electrical distribution system developed in the United States, known as the “Bus-Way System.” It employs copper or aluminum conductors housed within a metallic enclosure, supported by non-hydrocarbon insulating materials, thereby forming a new type of conductor. In Japan, busway systems were first put into practical use in 1954 (Showa 29), and since then their application has steadily expanded. Today, busway systems have become an indispensable wiring solution for electrical equipment and power systems in high-rise buildings, industrial plants, and other facilities.
Busbar trunking It is a novel circuit configuration developed in the United States known as the “Bus-Way System,” which uses copper or aluminum conductors supported by non-olefin insulators and encased in metal enclosures to form a new type of conductor. In Japan, this system was first put into practical use in 1954 (Showa 29), and since then busway systems have experienced significant development. Today, they have become an indispensable wiring method in electrical installations and power systems for high-rise buildings, industrial plants, and other applications.
Due to the growing demand for electrical power in buildings, factories, and other structures—a trend that continues to increase year by year—using conventional wiring methods (i.e., trunking systems) for installation presents numerous challenges and makes it virtually impossible to simplify modifications to the distribution system. However, when busway systems are employed, not only is the desired outcome easily achieved, but
Economically, busbar trunking systems are more expensive than cables; however, when compared with the various wiring accessories and the entire power distribution system, the overall construction cost of using busbar trunking is significantly lower, particularly for applications requiring high current ratings.
Busbar trunking What is the fire-resistant type like?
Fire-resistant busbar trunking is intended solely for powering fire-fighting equipment and must not be used for any other purpose. Consequently, such trunking is neither heat-resistant nor thermally insulated, and therefore should not be operated at full load for extended periods. With the exception of fire-resistant busbar trunking, all other types of busbar trunking are not designed for long-term operation at full load.
Difference between fire-resistant busbar trunking and fireproof busbar trunking:
The enclosure and insulation materials of the fire-resistant busbar trunking system are made from high-temperature fire-resistant materials rated for 1,100°C and high-temperature insulating materials rated for 300°C. The fire-resistance rating can be 60 minutes, 90 minutes, 120 minutes, or 180 minutes, and the material will only ignite when exposed to temperatures as high as 920–1,050°C.
Fire-resistant busbar trunking enclosures, whether standard or fire-rated smoke-sealed types, are equipped with fire-resistant partitions on the enclosure walls, and some enclosures are coated with fire-retardant paint. This design ensures that, during a fire, heat is contained within the enclosure for a specified duration while the busbar trunking system continues to operate normally. The fire resistance rating typically ranges from 30 to 60 minutes, with the enclosure maintaining structural integrity and thermal insulation under fire conditions up to approximately 800°C.
Busbar trunking With copper or aluminum as the conductors, it offers high current-carrying capacity and excellent electrical and mechanical performance. Moreover, its metal enclosure ensures non-combustibility, high safety and stability, and a long service life. Compared with existing distribution systems, it significantly reduces the space required for equipment installation, features an attractive appearance, and is highly conducive to the construction and operation of large-scale buildings. In summary, busbar trunking systems have the following characteristics:
1. The current-carrying capacity can be very high;
2. Small voltage drop.
3. Short-circuit load capacity;
4. High reliability and long service life;
5. High safety;
6. Equipment in the power distribution system can be added or replaced at will;
7. Small form factor;
8. Lightweight and easy to operate; 9. Extremely simple to connect (just like connecting a water pipe—simply use T-shaped or bent fittings to link it to the system).
10. Simple construction and inspection;
11. Possess a modern aesthetic sensibility.
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