What is the primary function of a UPS according to the IEEE?

The primary function of a UPS, or Uninterruptible Power Supply, is to ensure the quality and continuity of an AC power source. This is critical, especially for sensitive electronic devices and systems that require consistent and reliable power to operate effectively. A UPS not only provides backup power during an outage but also regulates voltage and filters out power disturbances, such as surges and sags, which can harm equipment or lead to data loss.

By maintaining the integrity of the power supplied to devices, a UPS facilitates uninterrupted operations, making it invaluable in settings such as data centers, hospitals, and financial institutions, where power quality and uptime are paramount. This aligns perfectly with the definition provided by the IEEE, emphasizing the dual role of the UPS in both backing up power during interruptions and ensuring that the power supplied is of a sufficient quality to protect sensitive loads.