The principle of UPS battery capacity selection

UPS battery capacity selection principle The reasonable choice of battery capacity is an important guarantee for UPS to supply power to load equipment. If the capacity is too large, the battery cannot be fully utilized and resources are wasted; if the capacity is too small, it cannot meet the user's requirements for backup time, and the battery life is poor. The selection of battery capacity should meet the following criteria: that is, the battery is necessary for the inverter to supply power during backup, and the battery voltage should not be lower than the lowest voltage allowed by the inverter when the load is rated. The backup period should be longer than the normal recovery time of the power supply stop or the time required for the power substation of the generator set (the front-end power system is equipped with a generator). Foreign large-capacity rechargeable batteries, otherwise it should be equipped with an external charger. At present, the start-up time of the petroleum machine of the communication organization (station) is 15 minutes, and the power is cut off, and the practical load of the UPS power supply Weaver in the redundant power operation method is about 60%, so it is recommended that each backup battery station, large UPS power supply The delay time (calculated when the UPS is fully loaded) is generally recommended to be 1 hour. There are many calculation methods for UPS backup battery capacity, constant power method (look-up table method), estimation method, power method, constant current method, different accounting methods have different results, let us tell which calculation method is the most accurate, each Various accounting methods have their own focus. In the actual application requirements, the use of batteries is fully considered, and the appropriate application occasions and the battery capacity calculation method under the condition of UPS power load are selected. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Some methods of use and maintenance of car batteries