UPS is English short for uninterruptible power system ,is able to provide sustained, stable and uninterrupted power supply to important external devices.
In principle, UPS is a set of digital and analog circuits, auto-control inverter and maintenance-free energy storage device in one of the power electronic equipment;
Functionally speaking, UPS mains abnormal at the time, effectively clean electricity; also in the city, sustained period of time when a sudden interruption to supply computers and other equipment, so you can have plenty of time to meet;
From the use of it, with the advent of the information society, UPS is widely used from the information collection, transmission, processing, storage to the application of all aspects of its importance with the increasing importance of information applications increased.
According to work principle ,UPS is divided into back-type, on-line and online interactive three categories; which is our most popular back-type UPS, such as the Stone HO series and SD series, it has an automatic voltage regulator, UPS power protection the most basic and most important function, although generally the conversion time of about 10ms, the inverter output is a square wave instead of the AC sine wave, but the structure is simple and has low cost and high reliability, it is widely used in computer, peripherals, POS machines and other fields; on-line UPS structure is more complex, but the performance improvement of all power to solve problems, such as Stone PS series, its distinguishing feature is the ability to continue to zero output pure sine wave AC power interruption, can solve the peak, surge, the power supply frequency drift, and all other issues; the need for larger investments, typically used in critical equipment and network centers of power in the demanding environment; other Stone, APC and other vendors also offer online interactive UPS, with the back-type, compared with online interactive filtering, anti-interference ability mains strong, the conversion time of less than 4ms, analog output sine wave inverter, so can be equipped with servers, routers and other network equipment, or used in a more electric environment poor areas; in particular, Stone MD Series UPS, prices are far lower than the on-line, should be strongly recommended to the user a better choice. According to IDC, 45% of all computer failures caused by power problems; in China, the number of cities the average power of 0.5 times / month, medium-sized city of 2 times / month, a small city or village is 4 times / month there are at least nine power problems: power outages, lightning spikes, surges, frequency of vibration, voltage surge, voltage fluctuation, frequency drift, voltage drop, pulse interference; so from the perspective of improving the power quality to the computer is equipped with a UPS very necessary. In addition, the precision of network equipment and communications equipment is not allowed to have continuous power to the server as the core of the network center will be equipped with UPS is self-evident, even in an ordinary computer, the use of the data files after three months The value of such software is worth more than the hardware, so as to prevent data loss and with UPS is very necessary. |
