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Circuit breaker with protection against sputtering arc faults 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H02H-003/26
  • H02H-009/08
출원번호 US-0112271 (1993-08-26)
발명자 / 주소
  • MacKenzie Raymond W. (Baldwin Boro PA)
출원인 / 주소
  • Westinghouse Electric Corp. (Pittsburgh PA 02)
인용정보 피인용 횟수 : 70  인용 특허 : 0

초록 ▼

A circuit breaker includes an electronic trip device which responds to sputtering arc-type faults. Level detectors compare the current in the protected circuit to a plurality of threshold levels and timers time the intervals that the current remains above each threshold, with the threshold levels an

대표청구항 ▼

A circuit breaker providing fault protection for an electric circuit, said circuit breaker comprising: sensing means providing a sensed signal which is representative of the rate of change of current in said electric circuit; detector means comparing said sensed signal with a plurality of threshold

이 특허를 인용한 특허 (70)

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