January 8, 2021
How to use the UPS power supply correctly?
In using the UPS power system, people often think that the battery is maintenance-free without paying attention. However, some data show that the proportion of UPS host failure or abnormal operation caused by battery failure is about 1/3. It can seem that strengthening UPS batteries' correct use and maintenance has an increasingly important significance for extending batteries' service life and reducing the UPS system's failure rate. Therefore, HOPPT BATTERY is here to talk about how to use and maintain UPS batteries properly.
In addition to the selection of regular brand batteries, the correct use and maintenance of batteries should be started from the following aspects:
1. Maintain a suitable ambient temperature
An important factor affecting battery life is the ambient temperature. Generally, the ambient temperature required by battery manufacturers is 20°C-25°C. Although the increase in temperature improves the battery's discharge capacity, the price paid is that the battery's life is greatly shortened. According to tests, once the ambient temperature exceeds 25°C, the battery life will be shortened by half for every 10°C increase. At present, UPS batteries are generally maintenance-free sealed lead-acid batteries with a design life of 5 years, which can only be achieved under the environment required by the battery manufacturer. If the specified environmental requirements are not met, the life span will vary greatly. The increase in ambient temperature will increase the battery's chemical activity, thereby generating a large amount of heat energy, which will increase the ambient temperature. This vicious cycle will accelerate the shortening of the battery's life.
2. Regularly charge and discharge
The float voltage and discharge voltage of the UPS power supply has been adjusted to the factory's rated value and the discharge current increases with the increase of the load. The load should be adjusted reasonably during use, such as controlling electronic equipment such as microcomputers. The number of units used. Generally, the load should not exceed 60% of the UPS rated load. Within this range, the battery discharge current will not be over-discharged.
Because UPS is connected to the mains for a long time, in an environment with high power supply quality and few mains blackouts, the battery will be in a floating charge state for a long time, which will lead to a decrease in the activity of the battery's chemical energy and electrical energy conversion and accelerate aging And shorten the service life. Therefore, it should be completely discharged every 2-3 months, and the discharge time can be determined according to the capacity and load of the battery. After a full-load discharge is completed, charge it for more than 8 hours as required.
3. Use the communication function
At present, the vast majority of large and medium UPSs have operational capabilities such as communication with microcomputers and program control. Install the corresponding software on the microcomputer, connect the UPS through the serial/parallel port, and run the program; you can use the computer to communicate with the UPS. It has functions such as information query, parameter setting, timing sets, automatic shutdown, and alarm. Through information query, you can obtain information such as mains input voltage, UPS output voltage, load utilization, battery capacity utilization, internal temperature, and mains frequency; through parameter settings, you can set the basic characteristics of UPS, battery life, and The battery runs out a warning, etc. These intelligent operations greatly facilitate the use and management of the UPS power supply and its storage battery.
4. Replace used/bad batteries in time
At present, the number of batteries equipped with large and medium UPS power supplies ranges from 3 to 80, or even more. Circuits connect these single batteries to form a battery pack to meet UPS DC power supply needs. In the continuous operation and use of UPS, individual batteries will inevitably be damaged due to the difference in performance and quality due to performance degradation and insufficient power storage capacity. When one/some battery pack batteries are damaged, the maintenance personnel should inspect and test each battery to eliminate the damaged battery. When replacing new batteries, you should try to buy the same manufacturer's batteries and the same model. It is forbidden to mix acid-proof batteries, sealed batteries, and batteries of different specifications.
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