UPS (Uninterruptible Power Supply) is a device that provides battery backup when the electrical power fails or drops to an unacceptable voltage level. An uninterruptible power supply, also uninterruptible power source, UPS or battery/flywheel backup, is an electrical apparatus that provides emergency power to a load when the input power source, typically the utility mains, fails.
Advantages of UPS :
It provides isolation between main supply and load. Since inverter is always ON, the quality of load voltage is free from distortion. All the disturbances of supply such as blackout, brownouts, spikes etc are absent in the output.
How online ups works ?
UPS units range in size from units designed to protect a single computer without a video monitor (around 200 VA rating) to large units powering entire data centres (>1MVA), buildings (>300kVA), or manufacturing processes.
An uninterruptible power supply, also uninterruptible power source, UPS or battery/flywheel backup, is an electrical apparatus that provides emergency power to a load when the input power source, typically the utility mains, fails.
A UPS differs from an auxiliary or emergency power system or standby generator in that it will provide instantaneous or near-instantaneous protection from input power interruptions by means of one or more attached batteries and associated electronic circuitry for low power users, and or by means of generatorsand flywheels for high power users. The on-battery runtime of most uninterruptible power sources is relatively short (5–15 minutes) being typical for smaller units—but sufficient to allow time to bring an auxiliary power source online, or to properly shut down the protected equipment.
While not limited to protecting any particular type of equipment, a UPS is typically used to protect computers, data centres, telecommunication equipment or other electrical equipment where an unexpected power disruption could cause injuries, fatalities, serious business disruption and/or data loss.