In this post, we will discuss about advantages of electrical busway used in a power or an electrical distribution system, compared with power cables.
1. The electrical busway is a flat conductor housed in a protective enclosure. Compared with XLPE or PVC sheathed power cables, it has the characteristics of good heat dissipation, low impedance and large current carrying capacity. Compared with cables above 630A or pre branch cables, electrical busway with a current carrying capacity of more than 630A can save 10-35% of copper materials and reduce more than 15% of power loss under the same current carrying capacity. The electrical busway has a large transmission current on weekdays, which facilitates the connection of feeders and reduces energy consumption. It is suitable for AC power supply and can maintain Longue durée operation under given voltage value. Under the AC power state within one minute, the electrical busway will not be broken down and will not have a flashover state. The withstand current it can carry, as well as the peak current for the shortest period of time, will meet the specifications.
2. The service life of electrical busway is about 2-3 times that of power cables.
Hong Kong, Macau, and some European countries clearly stipulate that the service life of cables is 12-15 years. In fact, the service life of electrical busway is as long as 30-50 years. electrical busway can be divided into air insulation and dense insulation. In general, the inherent framework of electrical busway such as air insulation is simple, and the densely insulated electrical busway has the optimal heat dissipation characteristics, and the current level is very high. The electrical shafts and electrical busway laid in high-rise buildings are all equipped with a certain plug diameter. Multiple human interference shall be considered when laying such joints. However, the initial capacity of electrical busway is very large, and the structure is compact, which also has advantages under the situation of heavy load.
3. The current carrying capacity of electrical busway is stable to avoid unnecessary power loss.
It is important for the electrical busway standard to meet the limit temperature rise current specified in the specification (i.e. the rated current of the electrical busway). This current can control the current carrying capacity of Bus duct. The rated current of a cable is determined by its cross-sectional area. The calculation load varies, and the number of cables inside the cable tray varies. When using different cable trays, the temperature inside the cable tray changes with the above factors, and the current carrying capacity of the cable also changes accordingly. So the current carrying capacity of the cable calculated by multiplying the derating coefficient by the rated current of the cable is inaccurate. At the same time, the laying method of this sealed bridge also increases electrical energy loss.
4. Lower investment cost.
The electrical busway is made of copper conductor and aluminum conductor. Compared with copper cable, the price of copper conductor electrical busway with more than 630A is similar to the cost of cable; The price of aluminum conductor Bus duct is 25%~35% lower than that of copper conductor cable. The higher the current is, the lower the cost of electrical busway is compared with that of cable. Therefore, it is more economical and reasonable to use electrical busway for transmission lines with a current carrying capacity greater than 630A than to use power cables.
5. The electrical busway has high safety performance and is not prone to fire accidents.
The electrical busway produced by most manufacturers is fireproof (flame retardant) electrical busway. If the electrical busway controls the temperature rise well, there will be no fire accident; If the temperature rise is not controlled well, electrical busway is not easy to cause fire. Because the 3C certification has a flame spread prevention test certificate for ordinary Bus duct (non fireproof and fire-resistant electrical busway), which is safer than ordinary power cables.
6. Strong flexibility, easy to introduce branch circuits.
Various sockets can be reserved for electrical busway, and equipment can be added or removed at any time. The electrical busway is plug-in and flexible, so it is easy to lead out branch circuits. Prefabricated cable branch circuits, as integral prefabricated cables, are not easy to lead out branch circuits, and the difficulty of adding branch circuits to the cables is also significant.
7.The cost loss during renovation is relatively small.
During the project reconstruction, electrical busway, like other equipment, can be disassembled and installed at any time, and the use site and location can be adjusted. The cost loss is small. If the cable is reconstructed, the loss cost is large.
8. electrical busway has a large current carrying capacity and can meet the requirements of the power transmission line.
Generally, the section of common power cables is not more than 300, and the current carrying capacity is about 600 amps. Cables are laid in the bridge. According to the relevant “specifications”, the derating factor is 0.7, and the current carrying capacity is only 400A. This current can only meet the requirements of small capacity transmission lines, while the electrical busway has large current carrying capacity, and the current values of various specifications are available, up to 8000A, which can fully meet the requirements of power transmission.
Conclusion:
The selection of electrical busway has many advantages, which is widely used in the transmission trunk project of low-voltage distribution system, and more and more replace the power cables. Compared with the technical performance of power cables, electrical busway has the characteristics of good heat dissipation, low impedance and large current carrying capacity. Compared with the technical performance of the cable or pre branch cable with a current carrying capacity of more than 630A, the electrical busway with a current carrying capacity of more than 630A can save 10-35% of copper materials and reduce more than 15% of power loss under the same current carrying capacity.
PowerTel & his dedicated engineers already designed & supplied custom electrical busway used in data centers and many other electrical distribution system; through a seamless connection between secondary side of a power distribution transformer to low voltage switchgear, assuring your electrical system running efficiently, smoothly and safely.
Please feel free to contact our expert engineers for your tailored electrical busway.