What is the difference between UPS power supply and EPS power supply

What are the differences between UPS power supply and EPS power supply? UPS is an uninterruptible power supply, which is mainly used to provide power protection and block the influence of the frequency fluctuation of the mains power on the equipment. The EPS power supply is an emergency power supply. The main function is to provide power supply support for a certain period of time after the mains is disconnected. The most obvious difference between them is that the UPS power supply mode requires a short switching time (0-10ms), while the EPS emergency power supply is relatively short. Wider (0～4s); what is the difference between UPS power cabinet and EPS power cabinet? UPS power supply is the abbreviation for uninterruptible power supply, and EPS power supply is the abbreviation for emergency power supply. Many people think that there is no difference between UPS power supply cabinets and EPS power supply cabinets, and they can also communicate with each other in time. But in fact, there are certain differences between the two power supplies. This article will give you details from several aspects. Elaboration. What is the difference between UPS power supply cabinet and EPS power supply cabinet? 1. UPS is an uninterruptible power supply, mainly used to provide power protection for important loads, including eliminating various power disturbances in the power grid, such as power outages, voltage fluctuations, frequency fluctuations, harmonics, voltage distortion, electrical noise, and spikes and many more. It is an internationally and domestically recognized product for protecting important loads and has strict international and national standards. 2. EPS is an emergency power supply, mainly to provide a certain power supply time to the load after the mains power failure. Therefore, it has an interruption from the mains power failure to the re-output. When the mains power is normal, there is mains power to supply power to the load, but it does not deal with various disturbances in the mains, which is a bit like a backup UPS. But this kind of product in China only has a definition in various places in the fire protection law, without a clear explanation, and there is no similar product in the world, so there is no corresponding international standard and national standard. 3. The power supply mode of the UPS power cabinet requires a short switching time (0～10ms), while the EPS emergency power supply is relatively wide (0～4s). 4. The UPS power cabinet has high output accuracy, fast conversion time, and high cost (about Twice the EPS), high energy consumption (online), short mainframe life (8-10 years), maintenance-free storage battery and UPS chassis. 5. EPS is a bit similar to a backup UPS. Usually the inverter does not work, and the battery is only put in when the mains power is cut off. Generally, constant current and constant voltage processing are not performed on the power supply. Usually use contactor conversion, the switching time is 0.1 ~ 0.25S. Its advantages are simple structure, low cost, low energy consumption and no noise, long service life of the main machine (15-20 years), suitable for inductive, capacitive and comprehensive loads, and can realize variable frequency soft start when needed. 6. EPS only has the function of continuous power supply, and generally does not require high inverter switching time (applications on special occasions have certain requirements). It can have multiple outputs and has monitoring and detection functions for each output and a single battery. The daily focus is on bypass The power supply is switched to inverter power supply only when the mains power fails, and the electric energy utilization rate is high. 7. The online UPS power supply has only one total output, and generally emphasizes its three major functions: voltage stabilization and frequency stabilization; uninterrupted power supply with extremely high switching time requirements; purification of the mains, daily emphasis on rectifier/inverter double conversion circuit power supply , When the inverter fails or is overloaded, it will switch to bypass power supply, and the power utilization rate is not high. 8. In European and American power grids and countries with relatively complete power supply, in order to save energy, some UPS power cabinets have been replaced by EPS with extremely short inverter switching time (less than 10 milliseconds). Price comparison between EPS power supply cabinet and UPS power supply cabinet. There are many brands of EPS emergency power supply, which are often produced by small workshops. Because of its simple internal structure and low price, it is easy to produce. Generally, you can buy it for thousands of yuan. Only a few large companies can do a good job with UPS power cabinets, including many listed companies. The requirements for the internal structure and even the structure of the components are very high. Many listed companies even spend a lot of money to buy Swiss original ABB products, just for a few microseconds. In addition to the high ex-factory price of UPS, the subsequent maintenance costs are also surprisingly high. Each company's annual maintenance costs for UPS are often as high as hundreds of thousands. The above is the difference between UPS power supply cabinet and EPS power supply cabinet. Do you all know? EPS is an emergency power supply, which is used for fire emergency equipment; UPS power supply is widely used and reliable in quality, and is mainly used for computer rooms and communication equipment. Disclaimer: Some pictures and content of articles published on this site are from the Internet. 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