| Title of Invention | FAULT CURRENT AND DIFFERENTIAL CURRENT DETECTION SYSTEM CAPABLE OF PREVENTING SPURIOUS TRIGGERING OF A PROTECTION SYSTEM DUE TO TRANSIENT INTERFERENCE PULSES |
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| Abstract | This invention relates to a method in a system controller for detecting fault or differential current in an electronic device. The method comprises the steps of determining if a detected current generated on a conductor is greater than or equal to a first predetermined current thereshold based on a detection signal corrresponding to said detected current;refrainning from outputting a control signal for a predetermined delay period after said detected current is greater than or equal to said first predetermined thereshold; determining if said detected current is greater than or equal to a second predetermined current threshold after said predetermined delay period is over; determining if said detected current is a fault or differential current after said detected current is greater than or equal to said second predeterminded current therehold; and when said detected current is said fault or differential current, outputting said control signal at least indirectly to a swich to instruct said switch to isolate said fault current from an electric device connected to said conductor. |
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| Patent Number | 210375 | |||||||||
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| Indian Patent Application Number | IN/PCT/2002/00606/KOL | |||||||||
| PG Journal Number | 40/2007 | |||||||||
| Publication Date | 05-Oct-2007 | |||||||||
| Grant Date | 03-Oct-2007 | |||||||||
| Date of Filing | 03-May-2002 | |||||||||
| Name of Patentee | SIEMENS AKTIENGESELLSCHAFT | |||||||||
| Applicant Address | WITTELSBACHERPLATZ 2, 80333 MUNCHEN GERMANY | |||||||||
Inventors:
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| PCT International Classification Number | HO 2H 1/04, 3/33 | |||||||||
| PCT International Application Number | PCT/EP01/06500 | |||||||||
| PCT International Filing date | 2001-06-08 | |||||||||
PCT Conventions:
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