Old revisions Add to book Export to PDF Fold/unfold all Book Creator Add this page to your book Book Creator Remove this page from your book Manage book (0 page(s)) Help UPS(Uninterrupted Power Supply) A device that supplies emergency power to the device for a certain period of time in the event of a failure of the main power supply resulting from a power outage, etc. This device is mainly used in facilities where stable supply of power is essential, such as communication, broadcasting, medical facilities, data centers, and infrastructure facilities.