UNDERVOLTAGE TRANSFER DETECTION
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United States of America Patent
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N/A
Issued Date -
Oct 8, 2009
app pub date -
Apr 7, 2008
filing date -
Apr 7, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method of increasing the reliability of an uninterruptible power supply (UPS) providing AC power to a load, comprising determining the magnitude and duration of an actual undervoltage event in a power output of the UPS; providing a predetermined undervoltage standard establishing at least a range of undervoltage events of acceptable magnitude and duration for the load; comparing the magnitude and duration of the actual undervoltage event with the predetermined standard; and causing the load to be transferred to an alternate source of AC power when the comparison of the actual undervoltage event with the predetermined standard reveals that the actual undervoltage event is not acceptable.
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