“Environmental protection”, “high efficiency” and “energy savings” are nowadays popular topics of discussion and, as they are strongly tied to the functionality of Uninterruptible Power Supplies (UPS), these have become a trendy topic as well. ECO mode represents an interesting feature in UPS technology, in particular related to small or single-phase applications with less than 10 kVA.
The UPS industry has spread its use in the last few years for applications that use on-line double conversion products. In a separate paper, the inherent ECO mode of line interactive UPS has been analyzed. However, let us now approach this operating mode and its advantages for UPS which make use of on-line double conversion technology. Its benefits, key features, trade-offs and the extra level of performance when used in Liebert® UPS products will be analyzed.