Low-voltage tube bus duct power distribution system

Abstract

The invention discloses a low-voltage tube bus duct power distribution system. The system is composed of a bus, a multi-channel tube bus connector, a cable branching box, an embedded connector and an installation support, wherein the bus is composed of a casing, an insulating layer and a conductor, the casing and the insulating layer are sleeved or coated on the surface of the conductor, the bus is installed in a branched mode through the multi-channel tube bus connector and the embedded connector, the bus is fixed on the wall surface through the installation support, and the cable branching box is required to be installed on the bus. According to the low-voltage tube bus duct power distribution system, a main body of the bus is made of a copper tube or an aluminum tube, the bus is low in skin effect, can be bent and processed randomly, can improve the flexibility of on-site installation and can bear high short-circuit current, and the supporting span is enlarged; during branching, the multi-channel tube bus connector and the embedded connector are used for connection, so that the reliability and the usage safety of branching contact are greatly improved; and the support is used for fixed installation, so that the difficulty in the installation and the hoisting is greatly reduced, and the whole system has the advantages of being simple to repair, free from maintenance basically, long in service life, economical, energy-saving and the like.

Description

Technical field: [0001] The patent of the present invention relates to a power supply and distribution system composed of industrial and building transmission power supply and distribution carrier bus ducts and tap units, especially a power supply suitable for lighting power supply, power supply, power distribution panel to load equipment, and transformer to power supply. Low-voltage pipe bus duct power distribution system for power unit or load equipment transmission. Background technique: [0002] The traditional busway power distribution system such as figure 1 As shown, it is a combined structure of discrete components, that is, the bus duct is processed into fixed-length segments according to a fixed size, and each segment is hoisted and connected on the construction site. When turning is required, only right-angle turns can be made (such as figure 2 As shown), and it is necessary to process various specifications and models of transfer elbows, install tap units or pl...

AI Technical Summary

Problems solved by technology

The traditional busway has the following disadvantages: 1. The main components of the busway trunk section are copper bars, insulating medium and metal shell relying on insulating pads or insulating supports, and are fastened into a whole by through-hole bolts. When a fault occurs, It is very inconvenient to overhaul and maintain it, and the insulating pads and through-hole bolts must be matched with a variety of different specifications according to the size of the conductive copper bars, which cannot meet the requirements for systems with large current transmission; 2. The bus duct adopts copper bars Or the aluminum bar is used as a conductor, the current distribution is uneven, the skin effect is high, the temperature rises, and the current loss is large; 3. The shell of the trunk section of the busway is covered with waist-shaped holes for fastening bolts and nuts, and the protection level is relatively low. It is IP54, and the installation needs to avoid fire sprinklers and water pipes; 4. Because the distance between each section of the busway is very short, it needs to be connected and assembled section by section during installation, which will inevitably increase a lot of connection parts

The connection between the units and the plug-in of the plug-in box can easily cause an increase in resistance, resulting in local heating, oxidation of the surrounding copper bars, and even failure; Elasticity maintains the contact of the conductive parts, and the reliability is difficult to guarantee. In special cases, the plug-in box needs to be bound and fixed

This branching scheme cannot guarantee the reliability of connection and the safety of electricity use; 5. The insulation medium commonly used in bus ducts is air insulation or insulating paper, etc., with low heat resistance, fast aging and short service life; air-insulated bus ducts, The product is large in size and takes up a lot of space; 6. The bus duct is made of steel or aluminum shell, which has high investment costs, consumes metal resources, complex assembly, high labor intensity, and low production efficiency; 7. The conductor of the bus duct cannot be completely isolated from the air. The protection level of the shell is low, it is difficult to use it outdoors, and it cannot be used in an environment with corrosive gases, and the application range is limited

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