Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
John G. Tracy0
Frederick Tassitino, Jr.0
Date of Patent
December 29, 2009
0Patent Application Number
115616630
Date Filed
November 20, 2006
0Patent Primary Examiner
Patent abstract
An uninterruptible power supply (UPS) system includes at least three UPSs configured to be connected in parallel to a common load. The system further includes control circuitry configured to support at least two redundant groups among the UPSs and to support at least two redundant subgroups among at least one of the redundant groups of UPSs. In this manner, a nested redundancy may be provided.
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