(5) Timely Replacement of Damaged/Failed Batteries: Large and medium-sized UPS power supplies are equipped with anywhere from 3 to 80 batteries, or even more. These individual batteries are connected in a circuit to form a battery pack to meet the DC power supply needs of the UPS. During continuous operation of the UPS, due to differences in performance and quality, it is inevitable that some batteries will experience performance degradation or fail to meet storage capacity requirements and become damaged. When one or more batteries in the battery pack are damaged, maintenance personnel should inspect and test each battery to eliminate the damaged one. When replacing batteries, efforts should be made to purchase batteries of the same manufacturer and model. It is forbidden to mix acid-resistant batteries and sealed batteries, or batteries of different specifications.
Methods to extend UPS power supply life
There are many ways to extend the life of a UPS power supply, and the main one is related to the battery inside. Here are some simple and easy tips.
1. Use of AC voltage regulator: After using a UPS power supply, there is no need to add an AC voltage regulator. If it is necessary to add one, it should be added before the UPS power supply, that is, the mains power first goes through the AC voltage regulator, then through the UPS power supply, and then to the load.
2. Avoid Overloading the UPS Power Supply. When using a UPS, the load size must be calculated to avoid excessive or insufficient load. An excessively large load will cause the UPS to operate under overload conditions for extended periods, shortening its lifespan. Conversely, an insufficiently large load will cause the UPS’s operating circuitry to malfunction, which is also harmful. A reasonable load should be controlled between 50% and 80%. Practice has shown that maintaining a UPS output load of around 60% is ideal. When the UPS experiences an overload or inverter failure, it will switch to bypass mode. In this mode, the UPS does not provide backup power, and the load receives power directly from the power system.
3. Avoid overloading: Operate within a range below the rated power whenever possible. Overloading not only affects the lifespan of the load itself but also the lifespan of the UPS power supply. Generally, the load on an online UPS should be controlled at 70%–80%, while the load on a standby UPS should be controlled at 60%–70%. Note that excessively light loads are also undesirable, although not as severe as overloading.
4. Do not use diesel generators: UPS power should not be powered by diesel generators because their frequency often changes and becomes unstable, affecting the normal operation of the UPS power supply.