Patents Assigned to P G Drives Technology Ltd.
  • Relay circuit
    Patent number: 7593198
    Abstract: A switching circuit for connecting a power source to a load is described. The circuit comprises a first relay and at least one second relay in parallel arrangement with the first relay. The switching circuit is arranged such that in the event of a fault condition occurring that requires the disconnection of the power source from the load, the at least one second relay opens while the first relay remains closed. In this manner, a reliable disconnection of the load from the switching circuit is achieved.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: September 22, 2009
    Assignee: P G Drives Technology Ltd.
    Inventors: Richard Peter Brereton, Duncan Hamilton, Daniel Robert Rees
  • Relay circuit
    Publication number: 20070268640
    Abstract: A switching circuit for connecting a power source to a load is described. The circuit comprises a first relay and at least one second relay in parallel arrangement with the first relay. The switching circuit is arranged such that in the event of a fault condition occurring that requires the disconnection of the power source from the load, the at least one second relay opens while the first relay remains closed. In this manner, a reliable disconnection of the load from the switching circuit is achieved.
    Type: Application
    Filed: May 16, 2007
    Publication date: November 22, 2007
    Applicant: P G Drives Technology Ltd.
    Inventors: Richard Peter Brereton, Duncan Hamilton, Daniel Robert Rees