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release time:2024-01-11 Hits: Popular:AG11 battery
Introduction to domestic UPS battery maintenance status and solutions. According to statistics from UPS manufacturers, more than 95% of UPS batteries in mainland China are not equipped with monitoring equipment, and more than 90% of UPS batteries have not undergone necessary maintenance. This has laid a major hidden danger for future UPS power supply failures. Therefore, the maintenance of UPS batteries is very important and necessary.
Domestic UPS battery maintenance status
The maintenance of UPS batteries is similar to the maintenance of batteries in general low-voltage systems. When a new battery is introduced, it requires project acceptance and deep discharge; when a new UPS battery is put into use, it is required to maintain a suitable battery working environment temperature and regularly measure each battery terminal. When the voltage difference between each battery is too large, equal charging must be carried out. It is required to conduct exploratory capacity tests or deep discharges on the batteries regularly in order to check the performance of the battery pack and maintain the activity of the battery.
However, in actual application, due to various conditions, few people perform the maintenance of UPS batteries exactly as described above. First, the acceptance of new batteries takes a long time and there are no convenient tools to use. Quite a few people do not have it at all. To do this work, the battery is put into use. According to statistics, more than 95% of UPS batteries in mainland China lack necessary maintenance, which lays hidden dangers for future UPS power supply failures. Secondly, after the new battery is put into use, due to the general UPS battery It is installed in a cabinet, making it inconvenient to measure and detach. The terminal voltage is rarely measured, and regular deep discharge is even impossible.
According to the current conditions, all the maintenance personnel can do is to turn off the mains power every once in a while and let the UPS battery discharge the actual system for a period of time. At best, it only activates the battery pack to maintain the activity of the battery, but for the performance of the battery Important data such as the pros and cons and the remaining capacity of each battery are still unknown.
UPS battery maintenance solution
1. Power on and off sequence
In order to prevent the UPS from being damaged by the inrush current generated by the load at the moment of startup, the UPS should be powered on in bypass mode first, and then turn on the loads one by one, thus avoiding the impact of the load current on the UPS. The service life of the UPS is extended. The shutdown sequence can be seen as the reverse process of the startup sequence. First, turn off the loads one by one, and then turn off the UPS.
2. Before starting up
Before turning on the machine, you first need to confirm whether the polarity of the input mains connection is correct to ensure personal safety. Note that the total load power cannot be greater than the rated power of the UPS. The UPS should be prevented from working in an overloaded state to ensure that the UPS can work normally.
3. After shutting down
After the mains power is interrupted and the UPS battery pack supplies power and automatically shuts down, do not use the UPS battery pack to power on again to avoid battery damage due to excessive discharge. When the mains power supply is abnormal and the UPS battery pack supplies power, the load should be turned off immediately and the machine should be turned off again after the mains power supply returns to normal.
4. Usage environment
Similar to the working environment of a computer, UPS does not have very high requirements for ambient temperature. It can usually work normally between 0℃ and 40℃. However, dust-proof problems also plague UPS. The usage environment of UPS requires cleanness, less dust, and dryness. Dust and humid environments will cause UPS to work abnormally. The UPS battery pack has higher temperature requirements. The standard operating temperature is 25°C. It is best not to exceed the range of 15°C to 30°C.
5. Battery maintenance
The UPS battery pack will self-discharge. If it is left unused for a long time, it will cause damage to the battery pack, so it needs to be charged and discharged regularly. If you are using a maintenance-free absorption electrolyte system battery, it will not produce any gas during normal use. However, if the user uses it improperly and causes the battery pack to be overcharged, gas will be generated and the internal pressure of the battery pack will increase. In severe cases, the battery may bulge, deform, leak or even rupture. If users find this phenomenon, they should replace the battery pack immediately.
6. Pay attention to safety
Since the voltage of the UPS battery pack is very high, there is a certain risk of electric shock to the human body. Therefore, safety guarantees should be ensured when loading and unloading conductive connecting strips and output lines. The tools used should be insulated, especially the output contacts should be equipped with settings to prevent electric shock.
7. Charging voltage
During the charging process of the UPS, if the charging voltage is too high, it will cause the battery pack to be overcharged, and vice versa, it will cause the battery pack to be undercharged. When the charging voltage is abnormal, battery configuration data may be incorrect. Therefore, when installing the battery pack, you must pay attention to the correctness of battery specifications and quantity. Batteries of different specifications and brands should be avoided as much as possible. It is also best not to use low-priced and low-quality external chargers.
8. Charging current
Similar to the voltage requirements of UPS, excessive current should be avoided when charging and discharging the UPS battery pack. Although sometimes the UPS battery pack can accept a certain degree of high current, it should be avoided in actual operation. Otherwise, the battery plates will be deformed, resulting in an increase in the internal resistance of the battery. In severe cases, the battery capacity will be seriously reduced, resulting in Battery pack life is significantly shortened.
The above is an introduction to the domestic UPS battery maintenance status and solutions. Generally, the battery life of a normally used UPS is 3 to 5 years. However, currently, a considerable number of domestic UPS batteries begin to have problems within one year of being put into use. In this aspect The reason is mainly due to the lack of necessary maintenance the day after tomorrow. It is worth noting that many users do not know the health status of their own system's UPS battery due to the lack of necessary testing and maintenance methods, leaving hidden dangers for the normal operation of the UPS system.
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