Modularity is a term frequently used in the industry but more recently in data center and UPS sectors. Basically, it refers to the capability to extend or growth power capacity, but when analysed in detail, it brings many points with it. Up to now, traditional data centers were operated with UPS setup in parallel to increase capacity or obtain “N+1” redundancy. This has been the “monolithic” approach. However, in recent years, there has been a trend towards using smaller power modules to gradually build a larger UPS system when additional capacity is needed, or to achieve the ability for improved availability by using N+X configurations.
