在电力传输系统里，母线的类型对供电效果影响重大。密集型母线和浇注母线作为常见类型，在多个方面存在明显差异。
In the power transmission system, the type ofbusway has a significant impact on the power supply effect. As common types, the compactbusway and the castbusway have obvious differences in many aspects.
结构上，密集型母线采用紧凑的“三明治” 构造。由铜或铝导体组成，导体间靠绝缘材料隔离，外包铝合金外壳，两侧常设有散热片。这种结构利于散热，且连接头可灵活检修、调整走向并增加插接口。浇注母线则是将导体浇注在绝缘材料（如环氧树脂）中形成一体化结构，防护性能佳。
In terms of structure, the compactbusway adopts a compact "sandwich" structure. It is composed of copper or aluminum conductors, which are isolated by insulating materials, and is enclosed by an aluminum alloy casing. Heat dissipation fins are often provided on both sides. This structure is conducive to heat dissipation, and the connection joints can be flexibly overhauled, the routing can be adjusted, and socket interfaces can be added. The castbusway, on the other hand, forms an integrated structure by casting the conductors in insulating materials (such as epoxy resin), and has excellent protection performance.
性能表现各有特点。散热与载流方面，密集型母线因良好的散热设计，载流能力强，能满足大功率设备需求；浇注母线因绝缘材料导热性差，散热受限，载流相对较弱。防护性能上，密集型母线防护等级一般为IP54 - IP66，适用于多数常规环境；浇注母线防护等级高达IP68，防水、防尘、防腐蚀，能在恶劣环境中稳定运行。检修维护时，密集型母线连接头便于检修，后期调整方便；浇注母线连接头固定，检修困难，安装工艺要求高。
The performance characteristics also vary. In terms of heat dissipation and current-carrying capacity, due to the good heat dissipation design, the compactbusway has a strong current-carrying capacity and can meet the power demands of high-power equipment. For the castbusway, because the thermal conductivity of the insulating material is poor, heat dissipation is limited, and its current-carrying capacity is relatively weak. In terms of protection performance, the protection level of the compactbusway is generally IP54 - IP66, which is suitable for most conventional environments. The protection level of the castbusway is as high as IP68, which is waterproof, dustproof, and corrosion-resistant, and can operate stably in harsh environments. During maintenance, the connection joints of the compactbusway are easy to overhaul, and subsequent adjustments are convenient. The connection joints of the castbusway are fixed, making maintenance difficult and requiring high installation technology.
应用场景也各有侧重。密集型母线适用于大型建筑和工业厂房等常规场合。在大型商业综合体，能满足众多楼层用电，且节省空间、方便改造；工业厂房中，可承受大电流，快速排除故障，保障生产。浇注母线多用于恶劣环境场所，如化工、海边，能抵御腐蚀；以及高洁净度要求场所，像电子芯片制造车间，防止灰尘影响生产。
The application scenarios also have different focuses. The compactbusway is suitable for conventional scenarios such as large buildings and industrial plants. In large commercial complexes, it can meet the power needs of multiple floors, save space, and is convenient for renovation. In industrial plants, it can withstand large currents, quickly troubleshoot faults, and ensure production. The castbusway is mostly used in harsh environment scenarios, such as chemical plants and coastal areas, to resist corrosion. It is also used in scenarios with high cleanliness requirements, such as electronic chip manufacturing workshops, to prevent dust from affecting production.