The use of bus ducts in high-rise buildings can easily achieve wiring,simplify the entire power system,and make the building more aesthetically pleasing.Due to its unique structural characteristics,bus ducts have strong safety performance.Bus ducts of different materials and cross-sections have corresponding current values.When selecting the section of the bus duct,the long-term operating current should be less than the long-term allowable current value of the selected section of the bus duct.When the average load is high and the conductors and bus ducts are long,the appropriate bus duct should be selected based on the current density,which is the current flowing per unit cross-sectional area of the bus duct.

　　We check whether all the connecting bolts of the bus duct joints and the contact parts of the conductors are loose to prevent the joints from heating up due to looseness.As a third-generation busbar trunking product,air busbar trunking combines the structural characteristics of air busbar and dense busbar trunking,that is,after wrapping the conductive busbar,phase copper separation is used to achieve double insulation.Under short-circuit current conditions,we need to verify the thermal and dynamic stability of the bus duct during short-circuit.Due to the presence of resistance in conductors and the influence of factors such as the AC current meter effect when multiple conductors are in close proximity,heating can occur when current passes through the bus duct.

　　The application of busbar trunking in large-scale power supply equipment can effectively solve the problem of insufficient power supply,and it is easy to transport and operate during installation.At the same time,the bus duct has a large capacity,strong power supply,and short production time,which can save a lot of time;During the maintenance and operation of the bus duct,it is necessary to constantly check whether there are leaks,water sprays,and potential sources of moisture around the entire system,whether there are heavy objects that pose a threat to the system,and whether there are heat sources that affect the temperature rise of the high and low voltage bus duct maintenance system.Check whether there are foreign objects entering the bus duct,whether there are defects,corrosion,supporting springs,and whether there is appropriate elasticity in the bus duct system components.If any problems are found,replace them immediately.

　　The connection bolts of the bus duct joints and the contact parts of the conductors are loose to prevent the joints from heating up due to looseness.Check whether the insulation material is aging and whether the conductive parts have melted or deformed.If phase to phase grounding and insulation breakdown are found,they should be dismantled in sections and checked with a voltage tester.If a fault is found,it should be repaired and the insulation coating should be re applied.Check whether the plug of the bus duct system is in good contact with the bus.Regularly remove the dust on the surface area of the high and low voltage bus ducts to ensure good heat dissipation.If the bus duct operates for a long time,it needs to be inspected every year.