Why should the equipment of communication room use the power supply of -48V voltage?
Any information technology equipment, its ultimate arbitrary circuit board chip is working in low-voltage direct current, such as + 12V, + 5V, + 3V and + 1.1V, etc.. Therefore, in theory, the DC power supply system is more efficient than the AC power supply system.
The communication of -48V DC power supply technology has been very mature, it is a kind of modular equipment, and directly use the battery as a backup power supply, the general reserve working time in a few hours or more, than the exchange reserve time. The utility model has the advantages of reliable work and convenient maintenance. After several decades of practical operation, this kind of power supply system has proved to be safe, effective and feasible, which is most suitable for telecommunication network applications.
Recalling the development of the telecommunications industry, we can clearly see that with the importance of the telecommunications industry continues to improve, the demand for power supply system is getting higher and higher. Therefore, the power supply environment of the computer room has been continuously improved, including the technical progress of individual products and the improvement of the power supply scheme resulted from a variety of product integration. These changes are based on the consistent pursuit of telecommunications enterprises for the quality of their power supply environment, that is, the power supply system of high reliability, efficient use, and low operating costs purposes. It should be said that the pursuit of first embodied in the DC power supply system of continuous improvement and perfection, from the early phase controlled power supply is introduced, the modular switching power supply DC power until today, Telecom has become a mature professional power solutions, has high reliability and management, and the formation of the comparison of industry standard specification.
In the communication station power supply system, our country has already completed the work of power supply system for DC -48V unified base voltage of the power supply system, the original -60V has been eliminated, long-distance trunk cable Bureau -24V and +24V system has been transformed into a unified or -48V power supply.
