母线槽具有载流量大、施工周期相对较短、使用寿命更长的特点，与电缆相比，具有一定的比较优势，与水泥工程的大型化高质量发展要求相适应。下面 山东电缆桥架厂家讲讲：母线槽与电缆的性能比较。

The bus duct has the characteristics of large current carrying capacity, relatively short construction period and longer service life. Compared with the cable, it has certain comparative advantages and adapts to the requirements of large-scale and high-quality development of cement engineering. Next, Shandong cable bridge manufacturer will talk about the performance comparison between bus duct and cable.

载流量及电能损耗比较

Comparison of current carrying capacity and electric energy loss

母线槽是扁导体，具有散热好、阻抗低及载流量大的特点，额定电流一般可以达到6300A，如此高的载流能力电缆难以达到。载流量相同的情况下，载流量630A以上时，母线槽与电缆相比，用铜量节省15％～30％，电能损耗可减少15％左右。电缆敷设时需考虑桥架内电缆的散热温度和桥架内电缆的根数，而母线槽的敷设只需满足规范所规定的极限温升电流即可，这对于绿色工程建设具有积极意义。

The bus duct is a flat conductor with good heat dissipation, low impedance and large current carrying capacity. The rated current can generally reach 6300A, which is difficult for cables with such high current carrying capacity. Under the same current carrying capacity, when the current carrying capacity is more than 630A, the copper consumption of bus duct and cable can be saved by 15%~30%, and the power consumption can be reduced by about 15%. When laying cables, the heat dissipation temperature of cables in the bridge and the number of cables in the bridge should be considered, while the laying of bus duct only needs to meet the limit temperature rise current specified in the specification, which is of positive significance for the construction of green projects.

安装比较

Installation comparison

母线槽的安装相对方便，电缆的敷设布线比较灵活，但电缆敷设需额外安装电缆桥架，相比之下，母线槽施工工期短，安装费用较低，不会影响整体工程工期。母线槽可以采用插接方式安装分接，把主干线的电力电源引入不同的分支，现场分接比较方便。同时，母线槽配电安装一般采用树干式，而电缆配电一般是点对点的放射式，电缆在配电出入口会占用较大空间，而母线槽则占用空间小，这也是母线槽在高层建筑或大型厂房应用较多的原因。

The installation of bus duct is relatively convenient and the cable laying and wiring is relatively flexible, but the cable laying requires additional installation of cable bridge. In contrast, the construction period of bus duct is short and the installation cost is low, which will not affect the overall project duration. The bus duct can be installed and tapped by plugging, and the power supply of the main line can be introduced into different branches. The on-site tapping is more convenient. At the same time, the distribution and installation of the bus duct is generally trunk type, while the cable distribution is generally point-to-point radial type. The cable will occupy a large space at the distribution entrance and exit, while the bus duct will occupy a small space, which is also the reason why the bus duct is widely used in high-rise buildings or large plants.

成本比较

Cost comparison

母线槽单价以直线段计量，安装费用一般包括在内。电缆单价不包括电缆桥架的费用以及电缆和桥架的安装费用。阻燃无卤低烟交联聚乙烯绝缘电缆(WDZ-YJY)单价与同载流量的4P密集型母线槽价格接近，而阻燃交联聚乙烯绝缘聚氯乙烯护套电力电缆(ZR-YJV)的成本优势较大。

The unit price of bus duct is measured by straight section, and the installation cost is generally included. The unit price of cable does not include the cost of cable bridge and the installation cost of cable and bridge. The unit price of flame-retardant halogen-free low-smoke cross-linked polyethylene insulated cable (WDZ-YJY) is close to that of 4P dense bus duct with the same carrying capacity, while the cost advantage of flame-retardant cross-linked polyethylene insulated PVC sheathed power cable (ZR-YJV) is large.

选型比较

Selection comparison

对于用电负荷较小(630A以下)、分支回路不多的场所，配电选择电缆更好；对于用电负荷较大(630A以上)、分支回路较多的场所，采用母线槽效果更佳。

For places with small power load (below 630A) and few branch circuits, cables are better for distribution; For places with large electrical load (more than 630A) and many branch circuits, it is better to use bus duct.

在大功率的低压变频柜、软启动柜与低压柜不并柜时，采用母线槽连接能节省现场施工时间；大型厂房一般对电量的需求量较大，在大型厂房中也可设置母线槽；在维修车间等需要移动式设备的使用场所，可选用滑触式母线槽。您有需求就来我们网站 //www.comprepyme.com咨询！

When high-power low-voltage frequency conversion cabinet, soft start cabinet and low-voltage cabinet are not combined, bus duct connection can save on-site construction time; Large power plants generally have a large demand for electricity, and bus ducts can also be set in large power plants; Sliding contact bus duct can be used in places requiring mobile equipment such as maintenance workshop. Come to our website if you need //www.comprepyme.com consulting service