Which statement correctly describes Small UPS systems?

Small UPS (Uninterruptible Power Supply) systems are primarily designed to provide short-term power backup and power conditioning for sensitive electronic devices. The correct statement highlights that small UPS systems can effectively limit various power quality issues, including outages, transients, sags, surges, and noise.

This capability is essential for protecting sensitive equipment such as computers, networking devices, and telecommunications equipment from sudden interruptions or fluctuations in power supply. By regulating voltage and providing clean power to the connected load, small UPS systems ensure a stable operating environment, which is crucial for maintaining the functionality and longevity of sensitive electronic devices.

The other statements do not accurately describe the characteristics of small UPS systems. They are not designed specifically for heavy industrial equipment, which typically requires larger, more robust UPS setups. Battery maintenance in small UPS systems often requires knowledge of battery technology and safety precautions, meaning it typically should be performed by qualified personnel rather than anyone. Lastly, while small UPS systems can help reduce harmonic distortion in some cases, they do not eliminate it completely, as harmonics can still arise from other loads connected to the power system.