KR920013842A - Digital over voltage and under voltage detection device - Google Patents

Digital over voltage and under voltage detection device Download PDF

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Publication number
KR920013842A
KR920013842A KR1019900022611A KR900022611A KR920013842A KR 920013842 A KR920013842 A KR 920013842A KR 1019900022611 A KR1019900022611 A KR 1019900022611A KR 900022611 A KR900022611 A KR 900022611A KR 920013842 A KR920013842 A KR 920013842A
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KR
South Korea
Prior art keywords
unit
output
voltage
microprocessor
data
Prior art date
Application number
KR1019900022611A
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Korean (ko)
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KR930002034B1 (en
Inventor
박장수
Original Assignee
김희수
금성기전 주식회사
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Application filed by 김희수, 금성기전 주식회사 filed Critical 김희수
Priority to KR1019900022611A priority Critical patent/KR930002034B1/en
Publication of KR920013842A publication Critical patent/KR920013842A/en
Application granted granted Critical
Publication of KR930002034B1 publication Critical patent/KR930002034B1/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage

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  • Emergency Protection Circuit Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

내용 없음No content

Description

디지탈 과전압, 부족전압 검출장치Digital over voltage and under voltage detection device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명 디지탈 과전압, 부족전압 검출 시스템 구성도, 제3도의 (가)(나)는 제2도에 대한 상세 구성도2 is a configuration diagram of the digital overvoltage and undervoltage detection system of the present invention, and (a) (b) of FIG. 3 is a detailed configuration diagram of FIG.

Claims (1)

과전압 계전기에 있어서, 입력되는 교류전원을 검출하는 전원검출기(PT1)와, 상기 전원검출기(PT1)로 부터 검출된 교류전압을 직류전압으로 변환시키는 정류부(1)와, 상기 정류부(1)의 직류전압을 필터링 하는 저역필터부(17)와, 상기 저역필터부(17)의 직류전압을 샘플링하고 홀드하는 샘플 및 홀드부(2)와, 상기 샘플 및 홀드부(12)로 부터 출력되는 아날로그 신호를 디지탈 신호로 변환하는 아날로그/디지탈 변환부(3)와, 세팅키이 스위치부(5)의 키이신호 및 아날로그/디지탈 변환부(3)의 출력신호에 따라 전체 시스템을 제어하는 마이크로 프로세서(4)와, 상기 마이크로 프로세서(4)의 출력 데이타를 래치하는 래치부(11)와, 상기 마이크로 프로세서(4)의 출력 및 래치부(11)의 출력데이타를 저장하는 데이타램(12)과, 상기 마이크로 프로세서(4)및 데이타램(2)의 출력데이타를 래치하는 래치부(13)와, 상기 래치부(13)의 출력레벨에 따라 스위칭되어 각종 상태를 표시하는 LED구동부(6)와, 상기 마이크로 프로세서(4)의 출력데이타를 디코딩하는 디코더부(15)와, 상기 디코더부(15)의 출력신호에 의해 구동되어 검출전압을 표시하는 디코더부(15)의 출력신호에 의해 구동되어 검출전압을 표시하는 디스플레이부(7)와, 상기 마이크로 프로세서(4)의 출력데이타를 모노멀티(16)를 통해 입력받아 자기고장진단을 체크하는 고장체크부(8)와, 상기 래치부(13)의 출력레벨에 따라 구동되어 출력접점을 차단하는 트립릴레이구동부(9)와, 상기 래치부(13)의 출력레벨에 따라 구동되어 트립될 상태를 경고하는 프리알람 릴레이 구동부(10)로서 구성함을 특징으로 하는 디지탈 과전압, 부족전압 검출장치.In the overvoltage relay, a power detector PT1 for detecting an input AC power, a rectifier 1 for converting an AC voltage detected from the power detector PT1 into a DC voltage, and a direct current of the rectifier 1 A low pass filter unit 17 for filtering voltage, a sample and hold unit 2 for sampling and holding a DC voltage of the low pass filter unit 17, and an analog signal output from the sample and hold unit 12 And a microprocessor (4) for controlling the whole system according to the key signal of the setting key switch unit (5) and the output signal of the analog / digital converter (3). And a latch unit 11 for latching the output data of the microprocessor 4, a data RAM 12 for storing the output of the microprocessor 4 and the output data of the latch unit 11, and the microcomputer. Exiting Processor (4) and Data RAM (2) A latch unit 13 for latching data, an LED driver 6 switching according to the output level of the latch unit 13 to display various states, and a decoder unit for decoding the output data of the microprocessor 4. (15), a display unit (7) which is driven by an output signal of the decoder unit (15) and is driven by an output signal of the decoder unit (15), which displays a detected voltage, and the microprocessor Fault check unit 8 for inputting the output data of (4) through the mono-multi 16 to check the self-diagnosis and trip relay for driving the output contact according to the output level of the latch unit 13 to block the output contact. A digital overvoltage and undervoltage detection device, characterized in that it is configured as a driving unit (9) and a pre-alarm relay driving unit (10) which warns a state to be driven by tripping according to the output level of the latch unit (13). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019900022611A 1990-12-31 1990-12-31 Power circuit KR930002034B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900022611A KR930002034B1 (en) 1990-12-31 1990-12-31 Power circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900022611A KR930002034B1 (en) 1990-12-31 1990-12-31 Power circuit

Publications (2)

Publication Number Publication Date
KR920013842A true KR920013842A (en) 1992-07-29
KR930002034B1 KR930002034B1 (en) 1993-03-22

Family

ID=19309082

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900022611A KR930002034B1 (en) 1990-12-31 1990-12-31 Power circuit

Country Status (1)

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KR (1) KR930002034B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100417772B1 (en) * 1997-01-21 2004-04-08 엘지산전 주식회사 Power supply cut-off apparatus for plc
KR100442301B1 (en) * 2002-02-23 2004-07-30 엘지산전 주식회사 Electronic Molded Case Circuit Breakers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100417772B1 (en) * 1997-01-21 2004-04-08 엘지산전 주식회사 Power supply cut-off apparatus for plc
KR100442301B1 (en) * 2002-02-23 2004-07-30 엘지산전 주식회사 Electronic Molded Case Circuit Breakers

Also Published As

Publication number Publication date
KR930002034B1 (en) 1993-03-22

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