The busbar trunking system is an efficient distribution device for transporting current,especially suitable for the economic and rational wiring needs of increasingly tall buildings and large-scale factories.Compared with ordinary cables,bus ducts have shown strong advantages as the main power supply line.However,over time,operational practice has shown that bus ducts themselves have many irreparable defects,so bus ducts are not ideal power supply products as the main power supply line.

　　Busbar trunking is expensive,requires a large installation area,has a long installation cycle,and is labor-intensive,resulting in a significant initial investment.It is widely recognized that plug-in bus ducts are expensive,such as a set of three-phase four wire system with a layer height of 3m and a main current of 100A.A plug-in bus duct with a branch connection costs around 2000 yuan.Due to the special installation environment and requirements for busbar trunking,a dedicated electrical shaft should be left in the building.For a high-rise building,the area occupied by the electrical shaft from top to bottom is considerable,which increases the investment in civil engineering;The bus duct is installed section by section,with each section weighing nearly 100 kilograms.The installation and positioning rely entirely on manual labor,and the labor intensity can be imagined;Due to different floor heights and current levels,the interchangeability of bus ducts is often poor.If the joints are not smooth and the space for tightening the joint connecting bolts is too small,the installation will be more time-consuming and laborious.

　　The installation requirements for bus ducts are quite strict.During installation,collision and knocking should be avoided,and the connecting bolts should be tightened appropriately.Over tightening or loosening can cause hidden dangers and also affect the service life of bus ducts.Therefore,experienced technical workers must be present to complete the installation.The production method is mostly handmade,and the product quality cannot be controlled or guaranteed.In addition,there are too many joints,resulting in many fault points,thus the power supply reliability is poor.Its moisture resistance and corrosion resistance are poor,and the installation environment and requirements are high,resulting in a large maintenance workload.During transportation and storage,the insulation layer of the bus duct will become damp and deteriorate,and the copper bars will oxidize and corrode,especially the connecting copper bars,which are more prone to oxidation and corrosion,resulting in a decrease in electrical performance.Therefore,the bus duct must be maintained and serviced before installation.

　　With the emergence of modern engineering facilities and equipment,the electricity consumption of various industries has increased rapidly,especially with the emergence of numerous high-rise buildings and large factory workshops.Traditional cables,as transmission lines,can no longer meet the requirements in high current transmission systems.The parallel use of multiple cables has brought many inconveniences to on-site installation and construction connections.Bus ducts that have been used for a long time should be repaired and inspected at least once a year.Before maintenance,use a multimeter to measure the conductive bars of the bus duct and confirm that the bus duct is not electrified.As a new type of distribution wire,plug-in bus duct has emerged.Compared with traditional cables,it fully demonstrates its superiority in high current transmission.At the same time,due to the use of new technologies and processes,the contact resistance and temperature rise at the connection points of the two ends of the bus duct and the junction of the distribution port are greatly reduced.High quality insulation materials are also used in the bus duct,thereby improving the safety and reliability of the bus duct and making the entire system more complete.