UPS power supply selection and issues needing attention

Choice of online and backup UPS power supplies

The choice of online or backup UPS power supply should be based on the needs of the computer equipment and economic conditions. If the economic conditions are good, the online UPS power supply can be selected; if the economic conditions are poor, but the normal operation of the microcomputer is not affected, the backup UPS power supply can also be selected.

Domestic and imported UPS power supply options

In the choice of domestic and imported UPS power supply, it is generally recommended to use domestic UPS power supply. In recent years, the quality of domestic small UPS power supply has been greatly improved. The choice of domestic small UPS power supply, on the one hand is the support of the country's economic and technological development, on the other hand, there is great convenience in maintenance, such as complete spare parts, maintenance capacity and maintenance speed are satisfactory. The quality of imported UPS power supply is generally good, but due to the difficulty of maintenance technology and spare parts, once a fault occurs, it can not be repaired in time, and it can not be used for a long time. Domestic UPS power supply is in line with domestic power supply in terms of working performance. For example, some models of UPS power supply have a wide input voltage range and have a regulated output function, which is suitable for some environments with poor power supply conditions in China. The construction of the electronic project of the People's Bank of Shenzhou and the proposal to adopt domestic UPS power supply are undoubtedly a good start.

Understand the power supply status of the UPS power supply site

Before purchasing a UPS power supply, you need to know the power supply status of the UPS power supply site. The general UPS power supply requirements for the mains input are: input voltage 380V±10%, 220V±10%; frequency 50±0.5Hz. If the power supply condition of the site is lower than this standard, the UPS power supply with wide input range should be selected. A regulated power supply or voltage regulator can be added to the front end of the UPS power supply.

Estimate the power of the UPS power supply

Calculate the total power consumption of the device based on the power consumption of the microcomputer and its external devices. The total power consumption multiplied by the safety factor is the estimated power of the UPS power supply. The safety factor is generally 1.2-1.3.

Attention should be paid to the selection of backup UPS power supply

When selecting a backup UPS power supply, pay special attention to the power switching time. The switching time mainly reflects the switching time of the UPS power supply and the requirement of the switching time of the microcomputer. If it is not properly selected, it will cause the microcomputer to stop when the utility power is cut off, and it will not function as the apc ups power supply.

The problem should be paid attention to when selecting imported UPS power supply

Some imported UPS power input and output wiring methods are different from those in China, and should pay attention to the improved method when selecting. The UPS power supply in the United States, such as PulSe, EXIDE, etc., is the opposite of the Chinese standard. Simply put, China's single-phase power supply is left zero right fire, while the United States is left fire right zero. In addition, it should be noted that the style of the American standard socket plug is different from that of our country. When the US national standard plug and socket is changed to the national standard plug and socket, attention should be paid to the internal joint relationship, and the wiring cannot be simply adjusted.

Convenience during maintenance is also a factor in selection

The failure of the UPS power supply is a normal phenomenon. When selecting the type, the convenience of maintenance is also a factor that cannot be underestimated. Otherwise, it will bring inconvenience to the maintenance in use.