KR890012423A - Overcurrent Protection Relay - Google Patents

Overcurrent Protection Relay Download PDF

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Publication number
KR890012423A
KR890012423A KR1019880000746A KR880000746A KR890012423A KR 890012423 A KR890012423 A KR 890012423A KR 1019880000746 A KR1019880000746 A KR 1019880000746A KR 880000746 A KR880000746 A KR 880000746A KR 890012423 A KR890012423 A KR 890012423A
Authority
KR
South Korea
Prior art keywords
voltage
unit
overcurrent
output
terminal
Prior art date
Application number
KR1019880000746A
Other languages
Korean (ko)
Other versions
KR900007580B1 (en
Inventor
추연업
Original Assignee
홍종선
금성기전 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 홍종선, 금성기전 주식회사 filed Critical 홍종선
Priority to KR1019880000746A priority Critical patent/KR900007580B1/en
Publication of KR890012423A publication Critical patent/KR890012423A/en
Application granted granted Critical
Publication of KR900007580B1 publication Critical patent/KR900007580B1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

내용 없음.No content.

Description

과전류 보호용 계전기Overcurrent Protection Relay

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

제1도는 본 발명의 과전류 보호용 계전기의 회로도.1 is a circuit diagram of an overcurrent protection relay of the present invention.

Claims (2)

부하(1)로 흐르는 전류를 검출하여 전압으로 변환하는 전류 검출부(2)와, 상기 전류검출부(2)에서 출력되어 증폭기(3)에서 증폭된 전압을 충전 및 방전시키는 충방전부(4) 빛 상기 부하(1)로 과전류가 흐르는지 검출하는 과전류 검출부(5)와, 상기 충방전부(4)에서 출력되어 버퍼(6)를 통한 전압을 기준전압공급부(7)의 기준전압(Vref)과 비교하는 비교부(8)와, 상기 과전류 검출부(5) 및 비교부(8)의 출력전압으로 상기 부하(l)에의 전원공급을 제어하고 표시하는 구동부(9)와, 상기 구동부(9)의 동작상태를 점검하는 동작점검부(10)로 구성함으로 특징으로 하는 과전류 보호용 계전기.A current detector 2 for detecting and converting a current flowing to the load 1 into a voltage, and a charge / discharge unit 4 for charging and discharging the voltage output from the current detector 2 and amplified by the amplifier 3 An overcurrent detector 5 for detecting whether an overcurrent flows to the load 1, and a voltage output from the charge / discharge unit 4 and the buffer 6 compared with a reference voltage V ref of the reference voltage supply 7. And a driving unit 9 for controlling and displaying a power supply to the load 1 with the output voltages of the overcurrent detecting unit 5 and the comparing unit 8, and the operation of the driving unit 9 Relay for overcurrent protection, characterized in that consisting of an operation check unit for checking the state (10). 제1항에 있어서, 기준전압 공급부(7)는 전원단자(Vcc)에 저항(R13) 및 가변저항(VR2), 저항(R14)을 직렬로 접속하여 가변저항(VR2)의 가변단자를 연산증폭기(OP3)의 비반전 입력단자(+)에 접속하고, 연산증폭기(OP3)의 출력단자는 다이오드(D5)를 통해 그의 반전 입력단자(-)에 접속하여 그 접속점에서 기준접압(V櫂ef)을 출력하게 구성함으로 특징으로 하는 과전류 보호용 계전기.The method of claim 1, wherein the reference variable of the voltage supply 7 is a power supply terminal resistor (R 13) and a variable resistor (VR 2), by connecting a resistor (R 14) in series with a variable resistor (VR 2) to (Vcc) connecting the terminal to the non-inverting input terminal (+) of the operational amplifier (OP 3), and an output terminal of the operational amplifier (OP 3) via a diode (D 5), its inverting input terminal (-) connected to a reference at the access point Relay for overcurrent protection, which is configured to output contact voltage (V 櫂ef ). ※참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is to be disclosed based on the initial application.
KR1019880000746A 1988-01-29 1988-01-29 Over current reley KR900007580B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019880000746A KR900007580B1 (en) 1988-01-29 1988-01-29 Over current reley

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019880000746A KR900007580B1 (en) 1988-01-29 1988-01-29 Over current reley

Publications (2)

Publication Number Publication Date
KR890012423A true KR890012423A (en) 1989-08-29
KR900007580B1 KR900007580B1 (en) 1990-10-15

Family

ID=19271812

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880000746A KR900007580B1 (en) 1988-01-29 1988-01-29 Over current reley

Country Status (1)

Country Link
KR (1) KR900007580B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100434662B1 (en) * 2001-11-29 2004-06-07 휴먼엘텍 주식회사 Circuit Breaker for Detecting Overload
CN102854370A (en) * 2011-06-29 2013-01-02 Ls产电株式会社 Device and method for detecting branch shunt current
KR20220015768A (en) * 2020-07-31 2022-02-08 태성전기산업주식회사 Earth leakage breaker including over current relay unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100434662B1 (en) * 2001-11-29 2004-06-07 휴먼엘텍 주식회사 Circuit Breaker for Detecting Overload
CN102854370A (en) * 2011-06-29 2013-01-02 Ls产电株式会社 Device and method for detecting branch shunt current
KR20220015768A (en) * 2020-07-31 2022-02-08 태성전기산업주식회사 Earth leakage breaker including over current relay unit

Also Published As

Publication number Publication date
KR900007580B1 (en) 1990-10-15

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