What should I do when the UPS battery system fails?

When the UPS battery system fails, you should first find out the cause, and distinguish whether it is the load or the UPS power system, the host or the battery. Although the main unit of UPS has the function of self-checking for failure, it is relative rather than point. It is very convenient for the replacement of accessories, but to maintain the failure point, a lot of analysis and detection work must be done. In addition, if a failure occurs in the self-checking part, the displayed failure content may be wrong. 1. Under normal circumstances, there is very little maintenance of the host, and the important thing is to prevent dust and regularly remove dust. Because the machine turns the wind into dust and deposits on the machine, when the air humidity will cause the host computer to control obstacles and cause the host computer to work obstacles, and the occurrence of accurate alarms, a large amount of dust will also cause poor heat dissipation of the equipment. Generally speaking, it should be thoroughly cleaned once a quarter. 2. Test the voltage and temperature at both ends of the battery: check whether the connector is loose or corroded, and check the pressure drop of the connector; whether the appearance of the battery is intact, and the shell is not deformed or leaking; whether there is acid mist escaping around the pole and safety valve; host The equipment is normal. 3. If the host fails, safe circuit breaks, or equipment burns out, you must find the cause and repair the failure before restarting. 4. The UPS power supply cannot be converted from the mains power to the inverter power supply, indicating that the part of the mains power conversion to the inverter power supply is faulty, so it is important to check whether the battery voltage is too low and whether the battery fuse is intact; if the battery part is normal, check the battery voltage test circuit Whether it is normal; if the battery voltage detection circuit is normal, check whether the mains inverter power conversion control output is normal. 5. When the battery voltage is low, but the battery is charged for more than 10 hours, the battery voltage is still not charged. This phenomenon is judged as the battery or the charging circuit failure, you can check whether the charging circuit input and output voltage are normal; if the charging circuit input is normal, the output If it is abnormal, disconnect the battery and re-test. If it is still abnormal, the charging circuit is faulty; if the input and output of the charging circuit are normal after disconnecting the battery, it means that the battery has been damaged due to long-term non-charging, over-discharge or life. . The battery pack that has passed its service life should be replaced in time to avoid affecting the host. 6. Check the discharge: not to pursue the percentage of discharge capacity first, but to pay attention to the discovery and treatment of backward batteries. After the backward battery is processed, an inspection discharge experiment is carried out. This can prevent accidents, so as not to discharge the degraded battery backwards into the reverse battery. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Characteristics of water-salt lithium batteries