Digital EnergyTM SG Series is one of the most reliable and best-performing UPS equipment that provides power protection and quality for a wide range of applications. Operates in VFI mode (independent voltage and frequency), has been developed to meet the growing demand for features for a? Clean entry? in the UPS, through an innovative rectifier control algorithm, formed by IGTs, which replace the obsolete technologies with thyristors + filters at the input. By means of elements as important as the Anti-return Protection and the strict control of the safety and EMC standards, the SG series complies with and even exceeds all the requirements demanded by the regulation and regulations applicable to UPS I? S. The reliability of the system can be increased by installing more units in parallel.