Analysis of the main points of online lithium battery UPS capacity selection

1) The calculated capacity of the online lithium battery UPS that can withstand the peak current of the impulse current u003d effective load capacity X impulse current (maximum) / online UPS rated current, and its value is generally 5 to 10 times the effective capacity. When the load is put into the power supply, a considerable inrush current appears, especially for computers and peripheral equipment. When the online lithium battery UPS supplies power, in order to reduce the capacity of the online UPS, the load is sequentially switched on during operation or the online UPS mains operation is selected; when the current returns to below the rated current value, it will be converted to the rectifier without power failure, and the inverter supplies power. (2) For online UPS with peak current that can withstand peak current; capacity u003d effective load capacity x peak current (maximum) / online UPS rated current; peak capacity is generally twice the effective capacity; peak factor is 2.5 or more The on-line UPS has a peak current capacity of 250% PA, which generally does not exceed the rated capacity of the on-line UPS. It can be used straight without compensation. (3) The overload capacity of the online lithium battery UPS related to overload is generally 1.1 times or more of the effective load, and the online UPS should be protected if the load overload exceeds 1.1 times. (4) Load sudden changes Most of the on-line UPS load sudden changes are within the range of 0100%, and the output voltage fluctuation can be controlled within -10%l~A. Therefore, the effective load capacity may not be compensated. (5) Generator-online UPS coordination. In some places, on-line UPS will switch to self-provided generator for power supply after the mains power failure. When self-provided generators supply power, they should be able to supply large inrush currents when the online UPS starts, without affecting the operation of the generators. 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 post: Detailed explanation of the impact of materials on the safety of lithium-ion power lithium-ion batteries