Old revisions Add to book Export to PDF 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.