What problems should be paid attention to when repairing and testing UPS power batteries?

What problems should be paid attention to in UPS power battery repair and testing? UPS power batteries all have the minimum battery voltage maintenance value, but the relationship between the terminal voltage and the discharge current is close. When the discharge current is small, the terminal voltage will be higher, and the more practical capacity will be released when the minimum maintenance value is reached. Therefore, the UPS operating at light load should try to prevent the appearance of shutting down after the discharge reaches the minimum maintenance value. For long-delay UPS, the maintenance value of the lower limit voltage of discharge should be increased appropriately. The core component of the UPS power supply is the inverter. When the inverter is running, please do not use an oscilloscope or other test tools to investigate the waveform of the control circuit. Because during the test, although extra care is taken, it is difficult to prevent the test lead from colliding with the approaching point, and it is even more difficult to prevent the circuit operation status from changing after the test lead is connected. 1. Know the importance of strengthening the repair of UPS power supply. UPS power supply battery is not an ordinary regulated power supply. It cannot be ignored when there is a problem. If there is a problem, let it go. It is necessary to give full play to the characteristics of UPS power supply performance to serve the normal operation of the computer system. There may be some difficulties and problems when repairing certain imported UPS power supplies. If there is no circuit diagram, some performance marks and symbols on the integrated circuit board are deliberately erased by the manufacturer, but the difficulties can be solved. 2. The UPS power source should work in an outstanding environment. The UPS power source is composed of a large number of electronic components. The normal function of these components requires an outstanding working environment. The environmental temperature, relative humidity, ventilation, cleanliness, etc. should be guaranteed. This aspect is often overlooked, resulting in increased defects and shortened equipment life. 3. Establish a set of regular and on-time repair criteria. The same UPS power supply battery has different repair levels, and its fault rate and life span are also different. Ann checks the signals and waveforms of each part of the UPS power supply on time, finds out the hidden dangers of the equipment in time, and prepares in advance. Reducing the defects in operation is also a way to extend the life of the equipment. 4. Maintenance of intelligent UPS power supply Regarding the maintenance of intelligent UPS power supply, the monitor display provides users with information on the nature of the fault, the location of the fault, and also provides users with a brief description of how to troubleshoot the fault. Therefore, professional maintenance personnel only need to strictly follow the operation and maintenance manual, and then refer to the prompts on the display to eliminate the fault step by step, or carry out the replacement and maintenance of spare parts and spare parts. Disclaimer: Some pictures and contents of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the charging errors of lithium batteries?