With the widespread use of electricity and the use of electrical appliances, the demand for cables is increasing, and the requirements for cables are becoming more and more stringent. Therefore, when choosing cables, choose carefully. However, people have discovered that there are not only cables on the market, but also bus bars, which can be used for power supply. So, are the cables the same as the bus bars? What is the difference between All Aluminum Alloy Cable Conductor and a bus bar?
1. The difference between cables and busbars depends on their meaning first, namely: (1) A cable is made of one or more mutually insulated conductors and an outer insulating protective layer, which transmits power or information from one place to another. A wire and a cable have the characteristics of internal electricity and external insulation. (2) The bus bar refers to the connection of voltage distribution devices at all levels in the substation, as well as the connection of electrical equipment such as transformers and corresponding power distribution devices. Most of them use rectangular or circular cross-section bare wires or stranded wires, which are collectively referred to as For the bus.
Second, the difference between cables and bus bars depends on their performance characteristics, namely: (1) For cables, since the cable core is a multi-strand thin copper wire, its root area is larger than that of the bus bar of the same current level, and its The "skin effect" is serious, which reduces the current rating, increases the voltage drop, is prone to heat, the line has a large energy loss, and is easy to age; in terms of safety, the PVC shell of the cable is vulnerable to mechanical and animal damage. When installing the cable, It is necessary to cut off the power supply first. If an error occurs, it will be very dangerous. Especially the cable must be grounded on site. Unreliable grounding will increase the risk. (2) The busbar adopts copper or aluminum busbar, which has high current density, low resistance, low skin effect, and no need to reduce capacity; small voltage drop means low energy loss, which can save user investment; metal busbar The closed shell can protect the bus from mechanical damage or animal injury. The installation of plug-in units in the power distribution system is very safe. The shell can be grounded as a whole, and the grounding is very reliable.
3. The difference between AAAC Conductors and busbars depends on their scope of application, namely: (1) The application of wires and cables is too common. Our daily lives and homes are inseparable from wires and cables. Which aspects are used more? Firstly, the power supply and distribution and industrial automation use more. Secondly, the amount of wires and cables used in urban power supply, lighting systems and household electricity is also very large. (2) The busbar is mainly suitable for power supply and distribution with frequency 50-60Hz, rated current 100A-6300A, and rated voltage below 690V. It is especially suitable for low-voltage power distribution systems in industrial plants, mines, etc. and high-rise commercial residential buildings, hotels, Power supply system for hospitals, etc.