Invention Grant
US08605405B2 Method and circuit for increasing the speed of electromechanical output on a protective relay 有权
提高保护继电器机电输出速度的方法和电路

  • Patent Title: Method and circuit for increasing the speed of electromechanical output on a protective relay
  • Patent Title (中): 提高保护继电器机电输出速度的方法和电路
  • Application No.: US13300706
    Application Date: 2011-11-21
  • Publication No.: US08605405B2
    Publication Date: 2013-12-10
  • Inventor: Mark C. Giacobbe
  • Applicant: Mark C. Giacobbe
  • Applicant Address: CH Zurich
  • Assignee: ABB Technology AG
  • Current Assignee: ABB Technology AG
  • Current Assignee Address: CH Zurich
  • Agency: Manelli Selter PLLC
  • Agent Edward J. Stemberger
  • Main IPC: H01H47/32
  • IPC: H01H47/32
Method and circuit for increasing the speed of electromechanical output on a protective relay
Abstract:
A method of increasing speed of an electro-mechanical relay provides an electro-mechanical relay having a coil and at least one contact. A first resistor and a second resistor are each in series with the coil, with the second resistor being in parallel with a first switch. A voltage is provided to the first switch, with the first switch being ON, thereby shorting out the second resistor and providing a first current through the first resistor and to the coil, to move the contact to a closed position. After a certain amount of time, the first switch is turned OFF so that a second current is provided through the first and second resistors and to the coil, maintaining the contact in the closed position.
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