An uninterruptible power supply (UPS), also referred to as a battery backup maintains a supply of electric power to connected equipment by supplying power from a battery source during a power outage. A UPS will switch from utility power to battery power almost instantly. A UPS is normally used to protect computers, telecommunication equipment, or other electronic equipment where an unexpected power outage could cause business disruption or data loss. Common Power Problems There are various power problems that a UPS will correct depending on topology and functionality incorporated by the manufacturer. They are as follows: 1. Power outage 2. Voltage sag – short term under-voltage 3. Brownout – Low voltages for an extended period of time. 4. Overvoltage – Increased voltages for an extended period of time. 5. Voltage Surge – short term over-voltage or spike such as from a lightning event. 6. Line nois...
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