Today, whether it is a computer room or a data center, UPS power supply has played a vital position. When the UPS power supply is power supply in the municipal power, it is the role of the voltage regulator and filter to ensure the normal operation of the equipment; when the municipal power is interrupted, it can provide it by providing its DC power supply part (battery pack, diesel generator, etc.). The DC power is transformed into a perfect AC power supply load.

UPS's power supply method

The working method of UPS power supply can be divided into single, parallel, redundant, and parallel redundancy according to the requirements of power supply reliability and continuity; The requirements can also be divided into three methods: decentralized, centralized, decentralized and concentrated. The equipment capacity used by decentralized UPS power supply is relatively small, and the support time is short. It is suitable for some office areas and control rooms; centralized UPS power supply is suitable for some computer network machine rooms with longer support time and larger time. Which UPS power supply and capacity should be determined according to Party A's needs. The statistics of the concentrated set of UPS power supply must be closely cooperated with the designer and the owner, and consider the conversion efficiency of the selected UPS products. Especially when the power is large, the UPS conversion efficiency is very important, and high efficiency can save the cost of early investment and long -term energy loss.

Under normal circumstances, there are many ways to combine the power supply room power supply. Under normal circumstances, the municipal electricity supply the computer equipment after the UPS steady frequency voltage to ensure the power quality of the computer equipment; when the electric power is parked, the reserve battery is powered on the computer equipment to ensure the power supply of the computer equipment. Municipal electricity and UPS reserve batteries are switched through electrostatic conversion switch to ensure that the computer equipment has no instantaneous power disconnection.

When UPS power supply is a concentrated method, it should also be fully considered that the equipment layout of the UPS computer room, the laying of the feeder, the heat dissipation of the main cabinet, and the noise reduction measures for the entire computer room; The above problems are not considered. However, the UPS power supply should be introduced from the circuit of the dual -power terminal interoperability and distribution cabinet (box), which cannot be attracted from the ordinary socket.

When designing the UPS power supply solution, for the important control rooms scattered in various places, it is also practical to use decentralized small UPS power supply as power supply mode to ensure the dual power end self -voting.

Precautions for daily use of UPS
1. Try to avoid over -current charging Excessive charging can easily cause positive and negative boards inside the battery to be curved, leaving the active substances on the surface of the*board, which causes the battery to decrease. When the situation is severe, it will cause the short circuit of the battery to be damaged.

2. Try to avoid charging battery overvoltage
Excessive voltage charging often causes the water contained in the battery electrolyte to be separated into hydrogen and oxygen, which shortens the life of the battery.

3. Replace the battery with a decrease in activity and excessive internal resistance
(1) With the extension of the UPS power supply time, the charging and discharge characteristics of some batteries will gradually deteriorate, and the end voltage decreases significantly. The performance of this battery can no longer rely on the charging circuit inside the UPS power supply to solve it, and continue to use it. There will be hidden dangers and should be replaced in time.

(2) Due to the increase in the internal resistance of the battery, the battery should not be replaced in time when the battery can be recovered by charging the battery with a normal charging voltage. The internal resistance of the battery is generally 10--30mn. If the internal resistance of the battery exceeds 200M, it will not be enough to maintain the normal operation of the UPS, and the battery with a large internal resistance must be replaced.

4. Avoid mixing or charging of new and old batteries or mixed new batteries

Because the internal resistance of the new battery is relatively small, the internal resistance of the old battery has increased to varying degrees. When the new and old batteries are mixed together and charged, the pressure of the old battery will be relatively large, which will be relatively large, which will easily cause it, which will easily cause Overvoltage charging phenomenon; for the new battery, the internal resistance is small, the charging voltage is small but the current is large, and the current phenomenon is likely to cause the current. Therefore, the new and old batteries should be avoided during the charging and discharge process.


5. The use environment of batteries

The service life of the battery is closely related to the environmental temperature. When the battery is at a lower temperature, the zinc plate in the battery is easy to powder, loses the power storage performance, and causes damage. When the temperature is too high, the battery capacity will decrease. Causes ** sexual damage. According to the technical specifications of
battery manufacturers, the best use temperature of the battery is 2 ~ 25 ° C. It can be extended to the service life of the battery in this temperature range.