A closed busbar product overview,
Along with the development of modern engineering facilities and equipment to emerge, all walks of life consumption increases rapidly, especially in many high-rise buildings and large workshops, as the traditional cable transmission lines now large current transmission system can not meet the requirements, the use of multiple parallel cable connected to the site installation and construction has brought a lot of inconvenience. Enclosed bus bar groove as a new type of power distribution wirecame into being, compared with the traditional cable in large current transmission fullydemonstrated its superiority, at the same time, due to the adoption of new technology and new process, greatly reduce the busway ends connected and the line at thesocket contact resistance and temperature rise, and the insulating material of highquality used in the bus slot, so as to improve the safety and reliability of the busbar,make the whole system more perfect.
Enclosed bus bar groove is made of sheet metal (steel or aluminum) for the protection of housing, the conductive row, insulating materials and related accessories system. It can be made into a standard length section, and at a distance is provided with splicingjunction box, feed type can also be made without a junction box of the enclosed bus bar. Has brought great convenience for feeding and installation and maintenance.
Two, closed busbar technology characteristics
Enclosed Busbar AC three-phase four wire or five wire system, suitable for thefrequency of *0 ~ *0Hz, **0A ~ ***0A rated current, rated voltage below **0V power supply power supply system using, especially suitable for industrial plants, mines and other low voltage distribution system and high-rise commercial building, hotel,hospital, etc..
Characteristics of Enclosed Busbar slot:
1, performance
The bus used in copper or aluminum row, the current density, the resistance is small,the skin effect is small, without derating use. Small voltage drop also means less energy loss, ultimately saving the investment of users. For cable, because the cablecore is multiple strands of wire, the root area than the bus with the current grade tohigh. And its "skin effect" seriously, reduce current ratings, increases the voltagedrop, easy to heat. Energy loss line, easy to aging.
2, the safety of the enclosed bus bar groove metal enclosed shell can bus bar protection against mechanical damage or animal damage, using plug-in unitinstallation is safe in the distribution system, the housing can be used as integral grounding, grounding is reliable, and the PVC shell cable is susceptible to mechanicalinjury and animal, cable installation must cut the power supply, if there is an error can be dangerous, especially cable to field ground work, grounding unreliable leads to an increase in the risk of.
3, installation
The bus consists of many segments, each segment length is short and light.Therefore, the installation need only a few people can quickly finish. Spare parts andstock bus has many standards, can fast shipping time saving on-site work. The close "sandwich" structure can reduce the electric space, thus freeing up more space for commercial purposes, such as rent or as a public place. For the installation of cable,is a difficult job. Because the single cable is often heavy, installation work requires a lot of human cooperation, spend more time to complete. In addition, the bending radius is subject to cable, need more space for installation.
4, route optimization
Through the use of busbar, we can merge the branch circuit, and transformed by the plug-in box will be as a big bus groove. It can simplify the electrical system, get morestrands of low current value. So it can save the construction cost, and ease of maintenance. The traditional cable for cable, will make the electrical system is extremely complex, large, difficult to maintain, so that waste engineering cost and the installation space.
5, scalability
For the bus, the system expansion through the increase or change the number ofsegments to complete, re utilization rate is high. In most cases, cable can not be re used, because of the length and the route is different, if you want to extend the system, we will buy the new replacing the old cable cable.
6, plug and switch box
Plug and switch box can be matched with a groove and the air bus. Installation is not necessary to add other parts. The inserting foot is the most important part, it is made of copper alloy stamping, after heat treatment to enhance the flexibility, and tin surface treatment, even if inserted above **0 times, still can maintain stable contactcapacity. The box set ground in order to secure reliable grounding, box is provided with the switch circuit, with moulded case circuit breaker can overload and short-circuit protection for the tap line capacity.
