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Redundant transmission of protection commands between remote tripping devices
   
Document Number
US Patent 7372808
Issued Date
May 13, 2008
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Abstract
In a method and a device for redundant transmission of protection commands between remote tripping devices (1, 8), useful information which represents a protection command or a rest signal is transmitted by a first remote tripping device (1) in at least two time slots via a first interface (2) to a first multiplexer (3), and is transmitted via different transmission paths (4, 5) by the multiplexer (3) based on the time slots. A second multiplexer (6) receives the useful information via the different transmission paths (4, 5), and transmits each useful information item via a time slot, which is allocated to the respective transmission path (4, 5), in a second interface (7) to a second remote tripping device (8).
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Number of Claims:
16
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Owner
ABB Schweiz AG (Baden,CH)
Published
May 13, 2008
Application Number
10/396,838
Filed
March 26, 2003
US Classification
370/228   361/62
Int'l Classification
H02H   3/05   (20060101)   H02H   7/26   (20060101)  
Examiner
Attorney/Law Firm
Priority Data
Apr 09, 2002 [EP] 02405283
USPTO Field of Search
370/227   370/228   361/62   361/64  
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