First, UPS power mainframe maintenance of the main content
1, clear the dust inside the machine,
2, measuring the battery voltage,
3, check the fan operation,
4, detection and adjustment of the UPS system parameters.
5, ups best installed in the air-conditioned room, good heat, no dust
6, UPS load between 30-60% the best
7, once a year maintenance, boot soot, detection
8, did not stop the case of electricity, every three months off the electricity to the battery discharge, the time for the delay time of 60%
9, such as a long blackout after the battery alarm to turn off the UPS, do not put the battery empty, call to remember to boot to the battery charge, the latter two can extend the battery life

Second, the switch machine sequence
  In order to avoid damage to the UPS caused by the inrush current generated at the moment of the start-up, the UPS should be first supplied with power to the bypass operation and then open the load one by one, thus avoiding the impact of the load current on the UPS. UPS's life is extended. Shutdown order can be seen as the reverse sequence of the boot sequence, first off the load one by one, then turn off the UPS.
  2. Before powering on
  Before starting up, you first need to confirm that the polarity of the input mains connection is correct to ensure personal safety. Note that the total load power can not be greater than the rated power of the UPS. UPS should be avoided in the overload state to ensure that the UPS can work properly.
  3. After shutdown
  After the power is interrupted, the UPS is powered by the battery pack and automatically shuts down, do not use the UPS battery pack power supply to avoid the battery due to excessive discharge and damage. When the electricity is abnormal and turned to UPS battery power supply, the load should be shut down and shut down in time to be normal and then restart the use of electricity.
  4. Use the environment
  And the computer's working environment is similar to the UPS on the ambient temperature requirements are not very high, usually 0 ℃ ~ 40 ℃ can work properly. But the dust problem also plagued the UPS, UPS use the environment requires clean, dust, dry, dust and humid environment will cause UPS work is not normal. The UPS battery pack on the temperature requirements are higher, the standard use of the temperature of 25 ℃, usually not better than 15 ℃ ~ 30 ℃ range. Low temperature will not only reduce the capacity of the battery pack, but also further affect the UPS's life. In addition, UPS's anti-magnetic ability is not very good. So should not be a strong magnetic objects on the UPS, otherwise it will cause UPS work is not normal or damage the machine.
  5. Battery maintenance
  UPS battery pack will be self-discharge phenomenon, if the long-term placement does not lead to damage to the battery pack, so the need for regular charge and discharge. If you use a maintenance-free absorption of the electrolyte system battery, in normal use will not produce any gas, but if the user caused by improper use of the battery pack overcharged will produce gas, and the battery pack increased pressure The situation will be serious when the battery bulging, deformation, leakage or even rupture, the user if you find this phenomenon should immediately replace the battery pack.
  6. Pay attention to safety
  As the UPS battery voltage is high, there is a certain risk of electric shock to the human body, so the loading and unloading of conductive strips and output lines should be safe, the tools used should be insulated, especially the output contacts should be more to prevent electric shock settings.
  7. Charging voltage
  In the UPS charging process, if the charging voltage is too high will lead to excessive battery charging, otherwise it will cause the battery pack is insufficient. When the charging voltage is not normal, may make the battery configuration data error. Therefore, when installing the battery pack, be sure to pay attention to the battery specifications and the number of correct, different specifications, different brands of batteries should try to avoid mixing, external charger is also best not to use low-cost low-quality products.
  8. Charge current
  And UPS voltage requirements similar to the UPS battery pack charge and discharge should try to avoid excessive current through. Although sometimes the UPS battery pack can accept a certain degree of high current, but in practice should still try to avoid, otherwise it will make the battery plate deformation, resulting in increased battery resistance, serious battery capacity will be a serious decline, Resulting in a significant reduction in battery life.
  9. Discharge depth
  UPS discharge depth of the battery life is also very large, the deeper the battery discharge depth, the less the number of its use, so the use of the battery should avoid the depth of discharge. Although some brands of UPS has a discharge protection function, but if the UPS in a light load discharge or no-load discharge, the battery will allow the depth of discharge, thus affecting the battery life.
  10. Load size
  Ordinary users will think that the greater the load capacity of the UPS, the better the protection of the computer, so when the purchase of the selection of high prices and high load capacity of the product. And the user in the actual application of the load is only 30% of the UPS rated or even less, in fact, this will also affect the life of the UPS, after all, its internal battery pack is often not a lot of time to work properly. Of course, is not to say that 100% of the rated load is the best, if so, UPS any small problems will cause great damage, the actual operation shows that 50% to 80% of the load is the best.
  11.UPS use environment requirements
  First, the placement must be stable;
  Second, the UPS chassis from the wall must maintain adequate ventilation distance;
  Three, away from heat, no direct sunlight, no corrosion;
  Four, to maintain the normal temperature and humidity;
  Fifth, keep the room clean.
  12. Use the UPS to consider the size and characteristics of the load
  UPS rated output power is an important parameter that marks how much power the product can drive. It varies with the load power factor. For example, a 1kVA UPS does not necessarily drive a 1kVA load. To extend UPS life, UPS should not be long Running at full load. Backup UPS generally select the rated power of 60% to 70% of the load, on-line UPS generally select the rated power of 70% to 80% of the load. At the same time UPS should not be long-term over-light state to run.
  13. Do a good job of UPS anti-induction work
  Lightning is the natural enemies of all electrical appliances, we must pay attention to ensure the effective shielding and grounding protection UPS. Raythets are mainly caused by a series of reactions caused by lightning or air-to-air discharge. When the clouds discharge, near the overhead power lines and communication lines due to electromagnetic induction phenomenon will produce high-potential pulse induction. These high potential pulses enter the UPS along the power line or communication line, while the UPS uses a large number of CMOS integrated circuit modules and control CPU and other microelectronic devices, they are very sensitive to lightning electromagnetic pulse, it is easy to be bad The In the UPS with effective shielding and good protection under the premise of grounding, be sure to do a good job of power lines and communication lines (such as remote monitoring signal line) lightning protection overvoltage protection.

Third, UPS power supply can be how long
  UPS spare time is determined by the UPS energy storage device, and now the UPS are generally sealed with a maintenance-free lead-acid batteries as energy storage devices, the size of the battery capacity by the "number of hours (AH)" this indicator , Which means the time at which the discharge is performed at a predetermined current. The same voltage of the battery, the large number of hours of large capacity; the same number of hours of the battery, the high voltage capacity, usually in terms of voltage and the number of hours together the battery capacity, such as 12V / 7AH, 12V / 24AH, 12V / 65AH, 12V / 100AH.
  Energy backup UPS generally built-in 4AH or 7AH battery, the standby time is fixed; online and online interactive UPS built-in 7AH battery standard models, but also with large-capacity battery with long-term models, the user can Need to achieve the spare time to determine how much capacity with the battery.
  UPS power backup delay time calculation method: (battery capacity X battery operating voltage) / equipment power = extended time (hours).