Maybe you will understand that we still have a lot of thoughts on the closed busway. You need to solve it together. Today we mainly want to pay attention to the closed busway with everyone. I look forward to your being able to make a better progress in the closed busway, we will let everyone have a more prominent performance in the closed busway.

General construction professionals design and install space for enclosed bus ducts. Each floor is equipped with one or more plug-in switch boxes, and then the plug-in switch boxes deliver power to each electrical equipment and circuit in the form of cables and wires.

In order to use electricity safely, the following points should be noted in the design: In order to ensure the continuity of the power supply line, the dual-circuit form should be considered, and as far as possible, the two circuits should have a certain safety interval. When selecting the specifications of the closed busway, the conductor cross section should be as large as possible to ensure that there is sufficient residual capacity. It is necessary to set more plug-in interfaces, but the operating height and power feeder path must be taken into account. Too many vertically arranged closed busway sockets will make the top of each layer of the junction box too high, which is inconvenient for operation and maintenance. Because the line impedance of the closed busway is very small, the model with the short-circuit breaking capacity should be selected when selecting the circuit breaker in the plug-in box. For the closed busway installed vertically on the shear wall, it is not necessary to provide the building designer with load data.

The application of the enclosed bus duct in the substation. The application of the substation due to engineering construction restrictions forces the transformer and the low-voltage distribution cabinet to be at different elevations and the transformer has a large capacity. Obviously, the cable cannot meet the needs of low-voltage large-current transmission. The use of closed busbars is a more reasonable choice. When designing a substation with a 3000t polyester polymerization device, we used a closed busbar. The incoming line of the substation is 6kV and two transformers with a capacity of 2000kVA. Restricted by engineering construction, the high-voltage distribution room and transformer room are located on different floors, and the low-voltage sides of the two transformers are connected to the low-voltage distribution cabinet with an air busbar. The application of closed busbars in large-scale production and processing workshops. For large-scale workshops with small single-machine load and uniform distribution, such as weaving workshops, knitting workshops of textile enterprises, and small-piece processing workshops of mechanical processing enterprises, the closed type The combination of busbar slot and plug-in box provides power supply.

Precautions for the application of enclosed bus ducts According to the current electrical explosion-proof specifications of the National Security Department, enclosed bus ducts are not suitable for Class A or Class B fire and explosion-proof locations. The main reason is that the connection method of each connection part of the closed busway cannot meet the explosion-proof requirements. The cost of closed busbars is relatively high. For some occasions where the load is concentrated or separate power supply equipment is required, the use of closed busbars is not reasonable from the economic perspective of project construction. In addition, the installation technical requirements of the closed busway are high, and the installation cost is naturally high. Therefore, before deciding whether to choose a closed busway, make sure to make a comprehensive economic and technical comparison between the closed busway solution and other solutions.