What are the characteristics of busbar trunking systems?
Release time:
2022-01-14
Source:
Busway is a closed metal enclosure composed of copper or aluminum busbars, used to distribute power more efficiently to the various components of a distributed system. In indoor low-voltage power distribution trunking projects, it is increasingly being used as a replacement for wires and cables.
Busbar trunking It is a closed metal assembly composed of copper and aluminum busbars, used to distribute greater power to the various components of a distributed system. In indoor low-voltage power distribution trunking projects, it is increasingly being used as a replacement for wires and cables.
It has already become widespread in developed countries abroad as well as in Hong Kong and Macao in China. In Guangzhou, Guangdong Province, for buildings of 12 stories or more where the distribution room is equipped with outgoing feeders—meaning that more than 90% of the main trunk lines serving each floor utilize busbar trunking systems—it is mandatory to employ busbar trunking runs from the 630 kVA transformer to the distribution cabinets.
With the advent of modern engineering infrastructure and equipment, electricity consumption across all sectors has increased dramatically—particularly with the proliferation of high-rise buildings and large industrial plants. Under such conditions, conventional cables used as transmission lines can no longer meet the demands of high-current distribution systems. Moreover, the parallel use of multiple cables creates significant logistical challenges during on-site installation and connection. In response, plug-in busbar trunking systems have emerged as a new type of power-distribution conductor. Compared with traditional cables, they offer distinct advantages for high-current applications: they substantially reduce contact resistance and temperature rise at both end connections and branch connections; they employ high-quality insulating materials, thereby enhancing safety and reliability; and overall, they contribute to a more streamlined and efficient system.
Busbar trunking What are the characteristics?
Busbar trunking systems are characterized by standardized product series, mass production, compact footprint, high current-carrying capacity, short design and installation cycles, easy assembly, non-combustibility, enhanced safety, and long service life. These busbar tap-off units are suitable for three-phase four-wire and three-phase five-wire power distribution systems operating at 50 Hz AC, with a rated voltage of 380 V and a rated current ranging from 250 A to 6,300 A.
What are the advantages of busbar trunking systems?
A closed busway (busway) is a busbar system consisting of a metal enclosure—typically made of steel or aluminum—along with conductive bars, insulating materials, and associated accessories. It can be configured either as a plug-in type closed busway with insertable compartment boxes, or as a feed-type closed busway without intermediate compartment boxes. In the power supply systems of high-rise buildings, power and lighting circuits are usually separately routed, and the busway is typically installed vertically along the walls within the electrical shafts, with at least one vertical run. Based on their application, busways are generally classified as start-up busways, straight busways (without partitioned compartments or connectors), L-shaped vertical (or horizontal) bend busways, Z-shaped vertical (or horizontal) offset busways, T-shaped vertical (or horizontal) T-type busways, and X-shaped vertical (or horizontal) cross busways. According to differences in structure and application, they are further categorized into dense-insulation types, air-insulated types, air-plus-insulation types, fire-resistant types, resin-insulated types, and sliding types. Busbar trunking . Based on the housing material, passenger car busbars are classified into steel-sheathed, aluminum-sheathed, and steel–aluminum hybrid-sheathed types.
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