The enclosed busbar is produced in a complete set by the factory,with guaranteed quality,low operation and maintenance workload,and easy construction and installation.In addition,the dense insulated bus duct shell adopts multi-point grounding,which makes the shell basically in an equipotential grounding mode,greatly simplifying the structure and avoiding the risk of personal electric shock.Install a busbar in the DC power supply system of the power room,which functions as a dedicated busbar output and does not have an output circuit inside the cabinet;Connect the DC split screen to the bus tie screen using a closed bus duct;The power supply of the DC column head cabinet in the exchange room is all from the DC distribution screen in this room.

　　In general,a DC power supply system consists of an AC screen,a rectifier screen,and a DC screen.After adopting a closed bus duct,it is necessary to adjust the conventional DC power supply system by installing one or two high-capacity DC split screens in the exchange room,and setting up large circuit outputs inside the DC split screens.Bus duct is commonly used in the AC power supply system of high-rise buildings.Bus duct is a bus system composed of metal plates(steel plates or aluminum magnesium alloy plates)as protective shells,conductive bars,insulation materials,and related accessories.Bus ducts can be divided into three types according to insulation methods:air type bus ducts,dense insulated bus ducts,and high-strength bus ducts.By analyzing successful application cases of bus ducts in AC systems,operators choose dense insulated bus ducts as the transmission medium for electrical energy in DC power supply systems,which can more reliably deliver electrical energy to the load side.

　　After energy-saving cable trays,the temperature of internal cables can be reduced within a range of about 10 degrees Celsius.The decrease in cable temperature can reduce the probability of insulation layer aging,thereby extending the service life of the cables.At the same time,it also reduces fire accidents caused by high temperatures and improves the reliability of power facilities.During the transmission of electricity over cables,losses occur.Under the current electricity pricing system,these losses are borne by end users.Energy saving cable trays are a great helper in reducing end user losses.After using energy-saving cable trays to lay cables,power loss is reduced,energy utilization efficiency is improved,and users save on electricity bills.

　　Some old information network complex buildings mostly use centralized power supply,with the power room usually located on the first floor and the information load on the upper floor.The distance between the power room and the information load is too large,and the number of DC cables used in the information room is huge.To avoid factors such as excessive cable laying and coordination difficulties,it is recommended to use a one-time method to transfer DC power from the power room to the load room side.The use of enclosed bus ducts in the DC power supply system of the computer room is an effective way to reduce the use of cables.It has the characteristics of strong heat dissipation,environmentally friendly products,and flexible wiring.It has practical application significance in the comprehensive building of centralized power supply mode.