Patents by Inventor Mohammed Y. Shafi

Mohammed Y. Shafi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Protection relay for sensitive earth fault protection
    Patent number: 9343895
    Abstract: A protection feature is disclosed for a self powered protection relay having, for example, sensitive earth fault protection. Protection can be achieved in tandem with optimal power on trip time and with integrated logic for inrush discrimination. The self supplied protection relay can include a current processing module to measure and evaluate line current to generate a trip signal, and to suppress inrush current to block earth fault detection during an inrush condition and thereby increase sensitivity of fault detection.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: May 17, 2016
    Assignee: ABB TECHNOLOGY LTD
    Inventors: Niraj Suthar, Vishal H. Shah, Priyank Desai, Mohammed Y. Shafi
  • PROTECTION RELAY FOR SENSITIVE EARTH FAULT PROTECTION
    Publication number: 20130242441
    Abstract: A protection feature is disclosed for a self powered protection relay having, for example, sensitive earth fault protection. Protection can be achieved in tandem with optimal power on trip time and with integrated logic for inrush discrimination. The self supplied protection relay can include a current processing module to measure and evaluate line current to generate a trip signal, and to suppress inrush current to block earth fault detection during an inrush condition and thereby increase sensitivity of fault detection.
    Type: Application
    Filed: April 29, 2013
    Publication date: September 19, 2013
    Applicant: ABB TECHNOLOGY LTD
    Inventors: Niraj Suthar, Vishal H. Shah, Priyank Desai, Mohammed Y. Shafi