UPS power supply correct use method and maintenance

The use and maintenance of UPS power supply should follow the following 10 points:

1. Correct switch sequence
In order to avoid damage to the UPS caused by the inrush current generated by the load at the moment of start-up, the UPS should be supplied with power first to make it in the bypass state, and then the loads should be turned on one by one, so as to avoid the impact of the load current on the UPS. The service life of UPS is extended. The shutdown sequence can be regarded as the reverse process of the startup sequence. First, turn off the loads one by one, and then turn off the UPS.

2. Precautions before starting up
Before turning on the machine, first confirm whether the polarity of the input mains connection is correct to ensure personal safety. Note that the total power of the load cannot be greater than the rated power of the UPS. The UPS should be prevented from working in an overload state to ensure that the UPS can work normally.

3. Precautions after shutdown
After the mains power is interrupted, the Golden Samurai UPS is not powered by the battery pack and automatically shuts down. When the mains power is abnormal and turns to the UPS battery pack, the load should be shut down and shut down in time, and then the mains power is restored to normal.

4. Use environment requirements
The temperature of the UPS power supply environment must be 0-40°C, relative humidity 30%-90%, and altitude <1000 meters. If the temperature is lower than 0℃ or damp, the insulation performance of the UPS power supply will be reduced, which may easily cause a short circuit; at the same time, it may also cause corrosion and rust of the UPS power supply and other equipment connectors, electrical connection screws, component pins, hoes, solder joints, etc. . In addition, the antimagnetic ability of UPS is not very good. Therefore, strong magnetic objects should not be placed on the UPS, otherwise it will cause the UPS to work abnormally or damage the machine.

5. Battery maintenance
UPS battery packs will have self-discharge. If they are left unused for a long time, the battery packs will be damaged. Therefore, it needs to be charged and discharged regularly. If you are using a maintenance-free absorption electrolyte system battery, it will not produce any gas during normal use, but if the user uses improperly and causes the battery pack to overcharge, it will generate gas and increase the internal pressure of the battery pack. In severe cases, the battery will swell, deform, leak or even rupture. If the user finds this phenomenon, he should immediately replace the battery pack.

6. Be safe
Due to the high voltage of the UPS battery pack, there is a certain risk of electric shock to the human body. Therefore, when loading and unloading the conductive connecting strip and the output line, there should be safety guarantees, and the tools used should be insulated, especially the output contacts should be equipped to prevent electric shock.

7. Charging voltage
In the UPS charging process, if the charging voltage is too high, it will cause overcharging of the battery pack, and vice versa, it will cause the battery pack to undercharge. When the charging voltage is abnormal, it may cause errors in the battery configuration data. Therefore, when installing the battery pack, you must pay attention to the correctness of the battery specifications and quantity. Different specifications and different brands of batteries should be avoided as much as possible, and it is best not to use low-cost and inferior products for external chargers.

8. Charging current
Similar to the voltage requirements of UPS, excessive current should be avoided when charging and discharging the UPS battery pack. Although sometimes the UPS battery pack can accept a certain level of high current, it should be avoided as much as possible in actual operation. Otherwise, the battery plate will be deformed and the internal resistance of the battery will increase. In severe cases, the battery capacity will be severely reduced. As a result, the life of the battery pack is greatly shortened.

9. Depth of discharge
The depth of discharge of the UPS has a great impact on the battery life. The deeper the battery discharge depth, the fewer the number of cycles it will use. Therefore, avoid deep discharge of the battery during use. Although some brands of UPS have a discharge protection function, if the UPS is in a light-load discharge or no-load discharge, the battery will be deeply discharged, which will affect 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 effect of the computer, so they choose high-priced and high-load capacity products when purchasing. In actual application, the user’s load is only 30% or less of the UPS rating. In fact, this will also affect the life of the UPS. After all, the internal battery pack often cannot work properly. Of course, it does not mean that 100% of the rated load is the best. If so, any minor problems in the UPS will cause great damage. Actual operation shows that it is best to choose a load of 50% to 80%.