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Digital I2T pickup, time bands and timing control circuits for static trip circuit breakers

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H02H-007/00
출원번호 US-0631708 (1984-07-17)
발명자 / 주소
  • Dougherty John J. (Avon CT)
출원인 / 주소
  • General Electric Company (New York NY 02)
인용정보 피인용 횟수 : 178  인용 특허 : 7

초록

Digital implementation of the overcurrent determination and time delay before tripping in a static circuit breaker trip unit allows the trip unit circuit to be manufactured in a single chip configuration. The signal after A/D conversion is compared within a magnitude comparator to determine pickup.

대표청구항

A static trip circuit interrupter comprising: a pair of electrical contacts; current sensing means for sensing current within a protected circuit; A/D conversion means for providing a digital output signal representation of said sensed current; interrupter means connected with said current sensing m

이 특허에 인용된 특허 (7)

  1. Chen Wen T. (West Newton MA) Oxley Vincent C. (Wayland MA), Circuit breaker.
  2. Saletta Gary F. (Irwin PA) Elms Robert T. (Monroeville PA) Engel Joseph C. (Monroeville PA), Circuit interrupter with front panel numeric display.
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  4. DePuy Robert P. (Cherry Hill NJ), Overcurrent relay apparatus.
  5. Stich Frederick A. (Milwaukee WI) Williams Conrad F. (New Orleans LA), Solid state circuit protection system and method.
  6. Pang Peter N. C. (Lawrenceville GA) Rozhansky Boris (Skokie IL), Solid state trip circuit with digital timer.
  7. DePuy Robert P. (Cherry Hill NJ), Static trip unit for circuit protective devices.

이 특허를 인용한 특허 (178)

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  24. Ishii Kazuhiro (Hiroshima JPX), Circuit breaker.
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  26. Castonguay Roger N. ; Rosen James L. ; Hassan Girish, Circuit breaker accessory reset system.
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  38. Castonguay, Roger N.; Christensen, Dave, Circuit breaker mechanism tripping cam.
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  40. Bauer Rolf-Dieter,DEX, Circuit breaker rotary contact arm arrangement.
  41. Ciarcia Ronald ; Schlitz Lei Zhang, Circuit breaker rotary contact arm arrangement.
  42. Doma Palani Krishnan ; Schlitz Daniel ; Arnold David, Circuit breaker rotary contact arrangement.
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