UPS is the most critical part of the data center power supply and distribution system, and now the UPS industry is undergoing tremendous changes. Modular UPS has become the development trend of the industry. The technology is becoming more and more mature. More and more users have or are considering using modular UPS to build new data centers in order to meet new user needs such as green, energy-saving, high-efficiency, easy expansion and easy maintenance. , Various manufacturers have also launched large-capacity modular UPS successively, and the status of traditional tower UPS is being challenged. In the face of many modular UPSs in the market, how to choose a suitable modular UPS and what kind of UPS is the real modular UPS are plagued by many UPS users.

In 2015, the application of modular UPS market achieved a rapid growth of 34.2%, which was much higher than the 9.9% growth rate of China's UPS market. In the future, modular UPS will be more and more used in the industry and will be more and more popular with users. The industry generally believes that modular UPS is an irreplaceable advantage of tower UPS in terms of on-demand configuration, rapid capacity expansion, flexible installation, and simple maintenance. In terms of environmental protection, high efficiency and energy saving, it mainly depends on the internal circuit of the UPS and the technology used, such as IGBT rectification or SCR rectification, and whether the output has an isolation transformer, etc. It has little to do with the external structure. But it should be noted that: Compared with the earlier industrial frequency machines, most modular UPSs currently have obvious advantages in reducing harmonics and improving efficiency due to the use of transformerless design and high-frequency technology such as IGBT rectification. The technical highlights of high frequency tower UPS compared to traditional power frequency UPS.

In terms of procurement costs and actual after-sales maintenance, except for individual scenarios, high-frequency modular UPS and high-frequency tower UPS are superior to traditional industrial frequency UPS in all aspects. The development trend of high-frequency machines replacing power frequency machines has also been widely recognized in the industry. At present, various manufacturers have reduced or stopped the research on power frequency machines. Statistics in recent years show that most of the newly built data centers overseas have adopted high-frequency UPS as the first choice for procurement. We can use the following table to summarize the differences between industrial frequency UPS, high frequency tower UPS, and high frequency modular UPS.

Table: The difference between industrial frequency UPS, high frequency tower UPS, and high frequency modular UPS

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