With the vigorous promotion and development of new infrastructure, bus ducts are becoming increasingly common in various power engineering projects and play an important role in the field of transmission and distribution.

With the widespread application of bus ducts, the problem of unqualified construction and installation is also increasing. Today CESKO will share with you the installation knowledge and some precautions of busbar trunking. Firstly, let's popularize the relevant knowledge of bus ducts. Bus duct is a metal device composed of copper wire and aluminum wire. There are three types of bus ducts: bus ducts and high-strength plug-in bus ducts. So next, the editor will share with you the installation method of bus duct. Let's take a look at the specific content below.

1. Installation of bus duct

Guangdong Cisco General Electric Belt is designed to be supported and fixed by various channel steel through the top plate and bottom plate. When crossing the building, settlement joints or expansion joints can be made using facilities that are suitable for the building structure to prevent the horizontal connection of the busbar from breaking, which will affect our normal power distribution. Therefore, attention must be paid to this aspect.

Measure the position of the reserved hole through the floor for the vertical installation of the bus duct, connect the two angle steel brackets to the bus duct with bolts, then install the shock-absorbing spring and washer with the bolts provided by the supplier, and tighten the nut to fix it in the groove. On the steel support. The number of spring bracket groups is determined by the supplier based on the type and capacity of the bus duct. 2. Use horizontal pressure plates, bolts, nuts, flat washers, and spring washers to fix the bus duct to the "-" - shaped angle steel bracket. Then install it in sections. To ensure the verticality of the bus duct (hang the vertical line with a magnetic line hammer), add a cover plate at the terminal and tighten it with bolts. Horizontal installation of bus duct: 1. Horizontal pressure plate, bolts, nuts, flat washers, and springs are used to fix the bus duct (horizontal) on the angle steel suspension bracket with horizontal installation washers. 2. Horizontal side installation. Use side mounted pressure plates, bolts, nuts, flat washers, and spring washers to fix the bus duct (horizontally) on the angle steel bracket. When installing the bus duct horizontally, ensure that it is level, add terminal covers, and fix it with bolts. Bus duct connection 1: Insert the small end of the bus duct into the large end of another bus duct, between the busbars, and place a matching insulation board on the outside of the busbars, then cover with insulation bolts and flat washers. Spring washer, then tighten the nut, use a torque wrench to tighten to the specified torque, and finally fix the upper and lower cover plates. Use insulated bolts to connect the two busbars. The torque of busbar trunking below 630A must reach 55N · m; The torque above 800A must reach 115 N · m (55 N · m for M10 and 115 N · m for M16). After connecting the busbar trunking, the shell is ready to connect to the grounding main line, and the grounding bolt is connected to the incoming busbar trunking, branch switch wire housing, and busbar trunking housing using 16mm2 soft copper wire. For a three wire four wire system, grounding is required. After connecting the 115 N · m M16) 3 bus duct, the casing is ready to be connected to the grounding main line. Use 16mm2 soft copper wire to connect the grounding bolts on the incoming bus duct, branch switch wire casing, and bus duct casing. For a three wire four wire system, grounding is required. After connecting the 115 N · m M16) 3 bus duct, the casing is ready to be connected to the grounding main line. Use 16mm2 soft copper wire to connect the grounding bolts on the incoming bus duct, branch switch wire casing, and bus duct casing. For a three wire four wire system, grounding is required.

Cisco General Electric reminds you of installation precautions: 1. After installing the bus duct, make adjustments to ensure the verticality and levelness of the bus duct. When installing the straight section of the busbar duct, add an expansion joint every 100m or so. Waterproof and moisture-proof measures must be taken during installation to prevent foreign objects from entering. After installation, close the door and lock it. The connection of the grounding jumper board for the bus duct housing should be firm to prevent loosening, and both ends of the bus duct housing should be grounded for protection.

2. Precautions for Inspection

The installed bus duct should be checked with a 500V megohmmeter, and the insulation resistance should be greater than 0.5M Ω. When checking with a double arm bridge, the continuity of the protective circuit should be less than 0.1 Ω, and the installation deviation of the bus duct should be less than 5mm for a 2-meter cross-section. Firstly, the installation technology requirements for this type of busbar are relatively high. We should pay attention to it in the building. It is necessary to ensure the firmness and hardness of the supporting structure, and the installation accuracy requirements are also too high. To ensure installation quality, it is best to use a theodolite to measure and find a unified one, and then make corresponding markings. This can reduce our errors and greatly help with construction.