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关于封闭式母线槽的设计选型

文章来源:http://www.sddlqj.cn/   作者:电缆桥架厂家发布时间:2022-08-04 浏览次数:

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在近几年的电气设计以及施工现场配合工作中,搞过一些封闭式母线槽线路的设计。下面就由济南电缆桥架厂家为我们讲讲有关内容吧。
In recent years, in the electrical design and construction site cooperation work, I have done some design of enclosed bus duct lines. Now let's talk about the relevant contents from Jinan cable bridge manufacturer.
尽管封闭式母线槽有很多优点,但在实际应用中也受一定条件的限制,如用电负荷类型、分布情况,安装空间,工程投资额度等等。
Although the enclosed bus duct has many advantages, it is also limited by certain conditions in practical application, such as the type of power load, distribution, installation space, project investment amount and so on.
封闭式母线槽在高层建筑里的应用一般建筑专业都会为封闭式母线槽设计安装空间(竖井),每个楼层均设一个或多个插接开关箱,再由插接开关箱向各用电设备及回路以电缆、电线方式送出电源。为了用电安全,设计时应注意以下几点:
The application of enclosed bus duct in high-rise buildings generally, the construction profession will design the installation space (shaft) for the enclosed bus duct. Each floor is equipped with one or more plug-in switch boxes, and then the plug-in switch boxes send power to all electrical equipment and circuits in the form of cables and wires. In order to use electricity safely, the following points should be paid attention to in the design:
为了保证供电线路的连续性,应考虑采用双回路形式,并尽可能使两回路有一定的安全间隔;在选择封闭式母线槽规格时,导体截面应尽量大一些,以保证具有足够的剩余容量;要多设插接口,但要考虑到操作高度和动力馈线路径,因为垂直布置的封闭式母线槽插口过多会使每层上面的插接箱高度过高,操作和检修都不方便;
In order to ensure the continuity of the power supply line, the double circuit form should be considered, and there should be a certain safety interval between the two circuits as far as possible; When selecting the specification of enclosed bus duct, the conductor section should be as large as possible to ensure sufficient residual capacity; More sockets should be set, but the operation height and power feeder path should be considered, because too many sockets of vertically arranged enclosed bus duct will make the height of the socket box on each floor too high, which is inconvenient for operation and maintenance;
济南电缆桥架
由于封闭式母线槽线路阻抗很小,在选择插接箱内断路器时应选短路分断能力与之相配的型号;对于垂直安装于剪力墙上的封闭式母线槽,可不必向建筑设计人员提供载荷数据。对于垂直穿楼板安装的封闭式母线槽,其载荷数据应按如下公式计算:支撑点载荷=0.5×建筑层高×(母线槽总重/母线槽总长)。由于封闭式母线槽结构比电缆桥架重得多,应建议设计人员考虑吊装空间。
Because the impedance of enclosed bus duct is very small, the model with matching short-circuit breaking capacity should be selected when selecting the circuit breaker in the plug-in box; For enclosed bus ducts installed vertically on shear walls, it is not necessary to provide load data to building designers. For the enclosed bus duct installed vertically through the floor, the load data shall be calculated according to the following formula: load at the support point =0.5 × Building floor height × (total weight of bus duct / total length of bus duct). Since the enclosed bus duct structure is much heavier than the cable tray, it is suggested that the designer consider the hoisting space.
封闭式母线槽在大型生产、加工车间内的应用对于单机负荷较小、分布均匀的大型厂房,如纺织企业的织布车间、针织车间,机械加工企业的小件加工车间等,可以利用封闭式母线槽、插接箱的组合进行供电。在这种场合封闭式母线槽与常规供电方式(电缆供电)相比,其优越性为:
The application of enclosed bus duct in large-scale production and processing workshops for large-scale workshops with small single machine load and uniform distribution, such as the weaving workshop and knitting workshop of textile enterprises and the small piece processing workshop of mechanical processing enterprises, the combination of enclosed bus duct and plug-in box can be used for power supply. In this case, compared with the conventional power supply mode (cable power supply), the advantages of closed bus duct are:
对用电负荷的均衡分布性要求不高,因此对负荷很不均衡的情况适应性强。即使在封闭式母线槽线路已经完成设计或已安装完毕的情况下,也可以根据新的负荷变动方案进行简单的调整,这一点常规供电方式(电缆供电)是无法与之相比的。另外,价格低廉的插接箱取代了昂贵的低压配电柜及动力箱,可以降低投资。同时插接箱内动力开关更接近用电设备,停、送电操作非常简便。
The requirement for the balanced distribution of power load is not high, so it has strong adaptability to the situation that the load is very unbalanced. Even if the enclosed bus duct line has been designed or installed, it can be simply adjusted according to the new load change scheme, which cannot be compared with the conventional power supply mode (cable power supply). In addition, the low-cost plug-in box replaces the expensive low-voltage distribution cabinet and power box, which can reduce the investment. At the same time, the power switch in the plug-in box is closer to the electrical equipment, and the operation of power stop and transmission is very simple.
在设计选型时应根据系统的短路电流值及样本上的参数对所选定型号进行动稳定和热稳定校验或计算,详情就来我们网站http://www.sddlqj.cn咨询看看吧。
During design and model selection, the dynamic stability and thermal stability of the selected model should be verified or calculated according to the short-circuit current value of the system and the parameters on the sample. For details, please visit our website http://www.sddlqj.cn Consult and have a look.
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