UPS maintenance and use of precautions?

UPS as a sudden blackout computer "lifeguard", has been more and more users, but as a more sophisticated equipment, how to correctly use and maintain it?　1. switching order In order to avoid the load in the start-up moment generated by the impact of the current on the UPS power supply damage, in the use of UPS power supply should be the first, so that it is in the bypass state, and then turn on the load one by one, which avoids the load current on the impact of the UPS, so that the service life of the UPS can be extended. The shutdown sequence can be seen as the reverse process of the boot sequence, first turn off the load one by one, and then turn off the UPS.　　2. Before powering on Before powering on, you first need to confirm that the polarity of the input utility line is correct to ensure personal safety. Note that the total power of the load can not be greater than the rated power of the UPS. UPS should be avoided to work in the overload state to ensure that the UPS can work properly.　　3. After the shutdown After the utility power interruption, the UPS is powered by the battery pack and automatically shut down, do not use the UPS battery pack power supply to boot, in order to avoid damage to the battery due to excessive discharge. When the utility power abnormalities and turn to the UPS battery pack power supply, you should promptly turn off the load and shut down, until the utility power returns to normal and then turn on the power to use.　　4. Use of the environment and the working environment of the computer is similar to the UPS requirements for the ambient temperature is also not very high, usually at 0 ℃ ~ 40 ℃ can work normally. But the dust problem is also plagued by UPS, UPS environment requires clean, dusty, dry, dusty and humid environment will cause UPS work is not normal. The UPS battery pack on the temperature requirements are higher, the standard temperature of 25 ℃, usually the best not to exceed the range of 15 ℃ ~ 30 ℃. Low temperature will not only reduce the capacity of the battery pack, but also further affect the service life of the UPS. In addition, the anti-magnetic ability of the UPS is not very good. So you should not put strong magnetic objects on the UPS, otherwise it will lead to abnormal operation of the UPS or damage to the machine.　　5. Battery maintenance UPS battery packs will exist self-discharge phenomenon, if placed for a long time will lead to damage to the battery pack, so the need for regular charging and discharging. If the use of maintenance-free absorption electrolyte system batteries, in normal use will not produce any gas, but if the user improper use of the battery pack caused by overcharging will produce gas, and there is an increase in the internal pressure of the battery pack, the seriousness of the battery will make the bulge, deformation, leakage, or even rupture, the user if you find that this phenomenon should be immediately replaced the battery pack.　　6. Pay attention to safety As the UPS battery pack voltage is very high, there is a certain risk of electric shock to the human body, so in the loading and unloading of conductive connection strips and output lines should be safe, the tools used should be insulated, especially the output contacts should be more to prevent electrocution settings.　　7. Charging voltage In the UPS charging process, if the charging voltage is too high will lead to excessive charging of the battery pack, and vice versa will cause the battery pack to be undercharged. When the charging voltage is not normal, it may make the battery configuration data produce errors. Therefore, in the installation of battery packs, we must pay attention to the battery specifications and the correct number of different specifications, different brands of batteries should try to avoid mixing, the external charger is also best not to use low-priced low-quality products.　　8. Charging current and UPS voltage requirements are similar to the UPS battery pack in the charge and discharge should try to avoid excessive current through. Although there are times when the UPS battery pack can accept a certain degree of high current, but in practice should be avoided, otherwise it will make the battery plate deformation, resulting in increased internal resistance of the battery, the battery capacity will be a serious decline in serious cases, resulting in a significant reduction in battery pack life.　　9. Discharge depth UPS discharge depth on battery life is also very large, the deeper the depth of battery discharge, the fewer the number of cycles, so the use of the battery should be avoided when the depth of discharge. Although some brands of UPS has a discharge protection function, but if the UPS is in the light load discharge or no-load discharge, will also let the battery depth discharge, thus affecting the service life of the battery pack.　　10. Load size Ordinary users will think that the greater the load capacity of the UPS, the better the protection of computers, and so in the purchase of the high price of high load capacity products. Users in the actual application of the load is only UPS rated 30% or less, in fact, this will also affect the service life of the UPS, after all, its internal battery packs are often not completely normal work. Of course, it is not that 100% of the rated load is the best, if so, the UPS has any small problem will cause great damage, the actual operation shows that the choice of 50% to 80% of the load is the best.