Due to the shell being made in the form of a tile groove,the position of the pit groove separates and fixes the busbar,which significantly improves the moisture-proof and heat dissipation functions of the busbar groove and is more suitable for the southern climate;Due to the gap between the wires,the temperature rise of the wires decreases,which increases the overload capacity and reduces magnetic oscillation noise.When comparing with the same specifications,its conductive cross-section must be larger than that of the densely insulated plug-in bus duct.Due to the use of copper soft joints for transition between busbars,oxidation is prone to occur between the joints in humid weather in the south,resulting in poor contact between the joints and the busbars,making the contacts prone to heating.

　　When connecting copper busbars to aluminum conductors,the busbar should use copper aluminum transition bars or clamp copper aluminum transition plates.The operators must be qualified professional electrical installers,and non professionals must leave the site.During power transmission,the bus duct system must not carry any electrical loads,all distribution devices must be in a disconnected state,and the span of the bus duct installation must not be too large.The fireproof busbar trunking consists of an outer shell coated with fireproof coating,busbars wrapped with fire-resistant mica tape,and brackets made of fire-resistant insulation materials.There are multiple grooves on the bracket,in which busbars are embedded and fixed.

　　There is a bus duct connection box at one end of the bus duct,and a bus tap box inside the bus duct.Bus ducts have excellent insulation performance and can be used continuously in normal environments or for more than an hour in fire environments.They are suitable for use in high-rise buildings and important facilities,replacing fire-resistant cables for power transmission and distribution.We use a refractory busbar made of ceramicized silicone,which utilizes the heat resistance properties of ceramicized silicone and is supplemented with magnesium oxide filled powder as the phase insulation material.The busbar is made of synthetic mica tape and ceramic silicone rubber tape as the phase insulation material.

　　The busbar trunking adopts busbar outer protective fireproof board and fire-resistant high silica or rock wool insulation layer,and uses fire-resistant busbar poured from volcanic rock;Adopting epoxy resin casting and outsourcing high silica wool or rock wool insulation materials to achieve fire resistance performance.The internal busbar of the bus duct is wrapped with mica tape and wrapped with high silica wool or rock wool as insulation layer to achieve fire resistance.The bus duct adopts a reasonable phase line tightly stacked structure design,with a compact appearance and small volume.The bus system has the advantages of low impedance,voltage reduction,and good dynamic and thermal stability.