※ Power transmission

A large amount of high-conductivity copper is consumed in power transmission, which is mainly used for power, wires and cables, busbars, transformers, switches, plug-in components and connectors.

During the power transmission process of wires and cables, electric energy is wasted due to resistance heating. From the point of view of energy saving and economy, the standard of "best cable section" is being promoted in the world at present. The "best cable cross-section" standard takes into account the two factors of one-time installation cost and power consumption, and appropriately enlarges the cable size to achieve the purpose of energy saving and the best comprehensive economic benefits.

※ Motor manufacturing

In electric motor manufacturing, copper alloys with high conductivity and high strength are widely used. The main copper parts are stator, rotor and shaft head. In large motors, the windings are cooled with water or hydrogen, known as double water internal cooling or hydrogen cooling motors, which requires large lengths of hollow wires.

The motor is a large user of electric energy, accounting for about 60% of the total electric energy supply. The cumulative electricity cost of a motor running is very high. Generally, the cost of the motor itself is reached within 500 hours of initial operation, which is equivalent to 4 to 16 times the cost within one year, and can reach 200 times the cost during the entire working life. A small increase in motor efficiency can not only save energy, but also obtain significant economic benefits. The development and application of high-efficiency motors is a hot topic in the world at present. Because the energy consumption inside the motor mainly comes from the resistance loss of the winding; therefore, increasing the cross section of the copper wire is a key measure to develop a high-efficiency motor. Compared with traditional motors, some high-efficiency motors that have been developed in recent years have increased the use of copper windings by 25 to 100%.

※ Communication Cable

Since the 1980s, due to the advantages of large current-carrying capacity of optical fiber cables, copper cables have been continuously replaced on communication trunk lines, and their applications have been rapidly promoted. However, the conversion of electrical energy into light energy and the wiring to the user still require a large amount of copper. With the development of the communication industry, people rely more and more on communication, and the demand for optical fiber cables and copper wires will continue to increase.