There are many types of dense bus ducts, which are always dazzling when choosing to use them. But before choosing, we must consider what kind of environment intensive bus duct will be used in, and then choose its configuration type and its protection level.
Because the performance of the dense enclosed bus duct is better than that of the air type, it is more widely used. The air type is a product that has been gradually eliminated. When purchasing, we must pay attention to this point. The dense enclosed bus duct has very high requirements for processing technology, and is basically assembled in a dust-free environment, It will cause the system to shoot and cause serious failure. The bus duct products provided by the factory shall be consistent with those passing the comprehensive type test. Strict avoidance of type test is one kind of product and another product is provided to users. The power transmission test in the project can not be used as the basis for comprehensively checking the performance of the bus duct. The power transmission current in the project is very small and can not reach the full load operation, which can not explain any problems. The temperature rise of bus duct is determined according to the heat resistance grade of insulating material. If the insulation material of bus duct is class F and its heat resistance is greater than or equal to 155 ℃, the allowable temperature rise is 115K (150 ℃ - ambient temperature 40 ℃). Therefore, the current carrying capacity of bus duct can only be determined after full load test. The test run of bus duct should be long-term and full load operation.
The use of dense bus duct in DC power supply system of computer room is a kind of selection method which can effectively reduce the use of cables. It has the characteristics of strong heat dissipation, environmental protection and flexible wiring. It has practical application significance in the comprehensive building with centralized power supply mode. The enclosed bus with dense insulated bus duct is produced in complete set by the factory, with guaranteed quality, small operation and maintenance workload, and easy operation and maintenance It is easy to install.