UPS power supply

Maintenance of UPS Power Supply

When using UPS power supply, you must pay attention to daily maintenance and upkeep in order to fully exert its function and extend its service life. The following is a brief introduction to the maintenance methods of UPS uninterruptible power supply.

UPS power supply is used more and more widely. When the mains power input is normal, the UPS stabilizes the mains power and supplies it to the load. At this time, the UPS is an AC mains voltage regulator, and it also charges the internal battery. ; When the mains power is interrupted (accidental power outage), the UPS immediately uses the power of the internal battery to continue to supply 220V AC power to the load through inverter conversion, so that the load can maintain normal operation and protect the load software and hardware from damage.

When using UPS power supply, you must pay attention to daily maintenance and upkeep in order to fully exert its function and extend its service life. The following is a brief introduction to the maintenance methods of UPS uninterruptible power supply.

1. Pay attention to the usage environment requirements of UPS

The environmental requirements of UPS are: the location must be flat, and the equipment must be placed at a certain distance from the wall to facilitate ventilation, moisture and heat dissipation; prevent direct sunlight, keep away from pollution sources, keep away from heat sources, and maintain indoor hygiene and cleanliness and normal temperature and humidity.

An important factor affecting battery life is ambient temperature. Generally, the optimal ambient temperature required by battery manufacturers is between 20-25°C. Although the increase in temperature has improved the battery’s discharge capacity, the price paid is that the battery life is greatly shortened.

UPS power supply

2. Regular charging and discharging

The float voltage and discharge voltage in the UPS power supply have been adjusted to the rated value when leaving the factory, and the discharge current increases with the increase of the load. The load should be reasonably adjusted during use, such as controlling electronic equipment such as microcomputers. The number of units used. The rated power of the equipment determines the size of the load. In order to ensure the service life of the UPS uninterruptible power supply, do not operate it at full load for a long time during use. Under normal circumstances, the load should not exceed 60% of the UPS rated load. Within this range, the battery’s discharge current will not be over-discharged.

Because the UPS is connected to the mains for a long time, in an environment where the power supply quality is high and mains power outages rarely occur, the battery will be in a floating charge state for a long time. Over time, the activity of the battery’s chemical energy and electrical energy will be reduced, and the aging will be accelerated. And shorten the service life. Therefore, it should generally be fully discharged every 2-3 months. The discharge time can be determined according to the battery capacity and load size. After a full load discharge is completed, recharge for more than 8 hours as required.

3. Protection against lightning strikes

Lightning strikes are the natural enemy of all electrical appliances. Under normal circumstances, UPS has a relatively good shielding function and must be grounded for protection. However, attention must also be paid to lightning protection of power lines and communication lines.

4. Use communication functions

Most large and medium-sized UPS have operable functions such as communication with microcomputer and program control. Install the corresponding software on the microcomputer, connect the UPS through the serial/parallel port, and run the program to communicate with the UPS using the microcomputer. Generally, it has functions such as information query, parameter setting, timing setting, 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 the UPS, battery life and Battery exhaustion alarm, etc. Through these intelligent operations, the use and management of UPS power supply and its battery are greatly facilitated.

5. Maintenance during use

Please study the instructions and user manual carefully before use. When using, you must strictly follow the correct startup and shutdown procedures. It is strictly prohibited to frequently turn on and off the UPS power supply, and it is prohibited to use it overloaded. When the battery is used to protect the shutdown, it must be charged again. It can be used, but cannot be turned on directly.

6. Replace waste/bad batteries promptly

The number of batteries equipped with large and medium-sized UPS power supplies ranges from 3 to 80, or even more. These individual batteries are connected through circuits to form a battery pack to meet the DC power supply needs of the UPS. In the continuous operation and use of the UPS, due to differences in performance and quality, it is inevitable that the performance of individual batteries will decline and the storage capacity will not meet the requirements and be damaged.

When certain batteries/batteries in the battery pack are damaged, maintenance personnel should inspect and test each battery to eliminate damaged batteries. When replacing a new battery, you should strive to purchase batteries of the same manufacturer and model. It is prohibited to mix acid-proof batteries, sealed batteries, and batteries of different specifications.

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