Frequently Asked Questions about Uninterruptible Power Supply (UPS) Hone your insight into power protection and review the critical component makeup of uninterruptible power supplies to make sure that you protect what counts when it counts. From staging to power ratings, topology, and form factors—if it's UPS-related, we'll help you grow your knowledge. ( Powerhouse systems Brisbane ) What is an Uninterruptible Power Supply? A standby power system, commonly referred to as a UPS system, is generally an electrical device that provides emergency power to a load in the event of utility power failure. Here, the three main functions a UPS system executes are conditioning the incoming 'dirty' power from the utility company to assure you of clean, uninterrupted power, providing backup power to allow graceful system shutdown in the case of complete power loss, and making up for short-term power sags and outages through the battery. What is the Difference Between Single Phase UPS