Invention Grant
- 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
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Application No.: US13300706Application Date: 2011-11-21
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Publication No.: US08605405B2Publication 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

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.
Public/Granted literature
- US20130128408A1 Method And Circuit For Increasing The Speed Of Electromechanical Output On A Protective Relay Public/Granted day:2013-05-23
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