Copper-aluminum alloy smart bus trunk system

Abstract

The copper-aluminum alloy smart bus trunk system disclosed by the present invention is used for power transmission trunk and power distribution in construction projects, and includes a bus duct start end section, a bus body, a variable capacitance section, a branch unit and a bus duct terminal, and at the bus duct start end section And the variable capacity section is equipped with temperature detection, over-temperature alarm, over-limit cut-off power circuit and circuit for detecting the voltage of the busbar casing, and automatically cuts off the power supply circuit when the voltage of the busbar casing exceeds the personal safety voltage; the busbar body is composed of the busbar casing , bus bar, the bus bar housing and bus bar connection in adjacent sections are respectively provided with bus slots, or \and bus bar connectors, or \and bus bar connectors with tap function, or\ And busbar connectors with equipotential terminals, or\and variable capacitance busway; copper and aluminum alloys are used for effective transition and perfect combination between the connections of the busway, saving copper resources, reducing engineering costs, and improving the safety of the power supply system performance.

Description

【Technical field】 [0001] The invention relates to electric energy transmission and connection technology, in particular to a copper-aluminum alloy smart bus trunk system. 【Background technique】 【Background technique】 [0003] With the emergence of modern engineering facilities and equipment, the power consumption of all walks of life is increasing rapidly, especially the emergence of many high-rise buildings and large workshops. The traditional cables used as power transmission wires can no longer meet the requirements in large current transmission systems. The parallel use of multiple cables brings a lot of inconvenience to the site installation and construction connection. As a new type of power distribution wire, the plug-in busway came into being. The busway is used for the main line of power transmission in the field of power transmission trunk line, and it is a substitute product for power cables. Compared with traditional cables, it can It fully demonstrates its su...

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Problems solved by technology

[0006] In addition, due to the large-scale construction and rapid industrial development in China, our copper consumption accounts for more than 50% of the world, and more than 60% of my country's copper is imported. It is a country poor in copper and rich in aluminum. Copper resources are scarce, and aluminum resources are very rich; this leads to the problem of cutting corners in bus ducts, such as using copper-clad aluminum instead of copper. Poor electrical conductivity, and a series of problems such as punching and stealing copper in the middle of the copper bar of the bus duct. In many projects, only half of the load current bus duct was burned out, which brought difficulties to the quality control of the project and caused engineering problems. Security risks

[0007]For the TN-S power supply main line system of the busway, most of the projects adopt the independent PE line, plus flat iron for equipotential grounding, the busway shell and the PE Effective evacuation cannot be formed, resulting in the failure of the protection connector system and PE becoming a decoration

Buried safety hazards in the project

[0008]In high-rise industrial plants, the busway line is long, and the current specification of the busway should be reduced after the branch is branched in the middle, but the relevant regulations stipulate that the power supply system The number of protection stages, changing the capacity of the busway and then setting the switch does not meet the specifications, so the project rarely changes the capacity and wastes resources

[0009]Although the cost of the aluminum conductor busbar is low, the aluminum conductor busbar is easy to oxidize. If the aluminum conductor end of the busbar is directly connected to the copper conductor, galvanic corrosion will occur, so Aluminum conductor busbars are rarely used in engineering, but the rising price of copper has increased the cost of my country's modernization construction and affected the construction.

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