Enclosed bus duct

2500AEnclosed bus ductBus duct, abbreviated as busway, is a busbar system composed of metal plates (steel plates or aluminum plates) as protective shells, conductive bars, insulation materials, and related accessories. It can be made into a plug-in enclosed busbar with plug-in junction boxes at regular intervals, or a feeding enclosed busbar without a junction box in the middle. In the power supply system of high-rise buildings, the power and lighting lines are often set separately, and the bus duct is installed vertically along the wall in the electrical shaft as the main power supply line. According to the purpose, a busbar trunking generally consists of a starting busbar trunking, a straight through busbar trunking (with and without sockets), an L-shaped vertical (horizontal) bent busbar, a Z-shaped vertical (horizontal) offset busbar, a T-shaped vertical (horizontal) three-way busbar, an X-shaped vertical (horizontal) four-way busbar, a variable capacity busbar trunking, an expansion busbar trunking, a terminal head, a terminal junction box, a plug-in box, related accessories and fastening devices of the busbar trunking. Bus ducts can be divided into three types according to insulation methods: air type plug-in bus ducts, dense insulation plug-in bus ducts, and high-strength plug-in bus ducts.

As a new type of distribution wire, plug-in bus duct has emerged. Compared with traditional cables, it fully demonstrates its * performance 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 both ends of the bus duct and the junction of the distribution port are greatly reduced. High quality insulation materials are used in the bus duct, thereby improving the safety and reliability of the bus duct and making the entire system more *.

Product Description

2500AEnclosed bus ductAluminum alloy dense busbar trunking adopts a typical "sandwich" structure, which is a flexible, safe, and reliable transmission and distribution system. It is designed reasonably and has excellent performance. It has the characteristics of stability and reliability, high distribution efficiency, good heat dissipation, voltage reduction, high mechanical strength, small space occupation, and convenient and fast installation.

The internal conductors are insulated and tightly arranged using a new overall wrapping process, and are stacked together to form a compact structure for overall heat dissipation. The molded aluminum alloy enclosed shell not only has high mechanical strength, but also excellent corrosion resistance and heat dissipation, and can be used as a 100% grounding conductor. This structure can effectively balance the impedance of each phase, thereby reducing the voltage loss of the bus duct system.

The fully enclosed dense structure ensures that the busbar trunking system does not need to consider capacity reduction regardless of the installation method used. The fully weak magnetic aluminum alloy shell not only reduces the weight of the bus duct itself, but also fully considers the high stability requirements for the bus duct during vertical installation; And it can meet the requirements of eliminating harmonics in various power systems, without affecting the bus duct system due to high current eddy current hysteresis losses. Additional 50% to 100% independent insulated PE (ground wire) or up to 200% neutral wire can be added according to user requirements. All of these have improved the reliability and practicality of the bus duct system.

Suitable for three-phase three wire system (3P), three-phase four wire system (3P+100% N), three-phase five wire system (3P+100% N+PE shell), three-phase five wire system (3P+100% N+50% PE), frequency 50-60Hz, rated working voltage up to 690V, rated insulation voltage up to 1000V, rated working current 250-6300A transmission and distribution system. As a low-cost and high-efficiency power transmission and distribution solution widely used in large commercial plazas, real estate projects, sports venues, hospitals, industrial plants, high-rise buildings, or high-tech environments, it will bring you high-performance * combinations.

What are the key points of mold design for enclosed bus duct? Now let's take a look at its design essentials.

(1)The segmented design of the combined upper mold not only facilitates mechanical processing and heat treatment, ensuring the quality of the enclosed bus duct mold, but also facilitates the assembly and replacement of the upper mold.

(2)Reasonably select the clamping gap between the main and auxiliary molds and the U-shaped groove of the lower mold body. The size of the gap is the main factor affecting the accuracy of the workpiece. The larger the gap, the worse the accuracy of the workpiece. However, a gap that is too small can cause difficulty in demolding or cause scratches on the surface of the workpiece. Here, the size of the gap is determined through multiple experiments and mold repairs.

(3)It is necessary to ensure the height * of the left and right shoulders of the enclosed bus duct and the top surface of the U-shaped groove of the lower mold body. Moreover, the size of the rounded corners of the left and right shoulders will directly affect the accuracy and quality of the workpiece. The larger the rounded corner or the height of the left and right shoulders is not *, the less ideal the edge pressing effect will be. If the rounded corner is too small, it will cause significant indentation on the surface of the workpiece. In the design, we determined the rounded corner of the shoulder to be R0.5.

(4)The lower mold body adopts an overall design, which not only ensures the machining accuracy of each groove, but also facilitates its transposition. Moreover, since the lower mold is installed on the lower workbench of the bending machine, it is also convenient for its installation and replacement.