Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Mohammad Nanda Marwali0
Terry D Bush0
Brian Heber0
Paul Taylor0
Date of Patent
July 28, 2009
Patent Application Number
11423497
Date Filed
June 12, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
An uninterruptible power supply (UPS) system includes a first UPS module that has a first power source, a second power source and a controller operable to selectively connect the first or second power source to a load. A second UPS module is connected in parallel with the first UPS module. The second UPS module also includes a first power source, a second power source and a controller operable to selectively connect the first or second power source to a load. The controller of the first UPS module gradually transfers power from the first power source of the first UPS module to the first power source of the second UPS module to detect the presence of the first power source of the second UPS module.
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