KR930017261A - Overload relay - Google Patents

Overload relay Download PDF

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Publication number
KR930017261A
KR930017261A KR1019920000796A KR920000796A KR930017261A KR 930017261 A KR930017261 A KR 930017261A KR 1019920000796 A KR1019920000796 A KR 1019920000796A KR 920000796 A KR920000796 A KR 920000796A KR 930017261 A KR930017261 A KR 930017261A
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KR
South Korea
Prior art keywords
relay
voltage
overload
current
time
Prior art date
Application number
KR1019920000796A
Other languages
Korean (ko)
Inventor
이종구
Original Assignee
이종구
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 이종구 filed Critical 이종구
Priority to KR1019920000796A priority Critical patent/KR930017261A/en
Publication of KR930017261A publication Critical patent/KR930017261A/en

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Abstract

변류기에 의해 전류를 검출하고, 검출된 전류를 직류전압으로 정류 변환하고, 이 정류된 전압을 설정된 전압과 비교하여 과부하를 검출하는 과부하 검출부와, 과부하를 검출한후 계전기를 동작 제어하는 계전기 제어부와 라인 전압을 감시하여 동작 전압이하일 경우에 계전기를 동작시키기 위한 저전압 검출회로로 구성되어 과부하 전류 및 저전압과 동작시간의 설정이 가능하고, 계전기가 과부하 또는 저전압으로 동작했을 때의 복귀방법을 수동 또는 자동복귀로 선택하여 사용할 수 있으며, 자동 복귀시의 복귀시간을 임의로 설정할 수 있음은 물론 단상 또는 삼상에 관계없이 외부 또는 내부점검을 이용할 수 있는 과부하 계전기.An overload detector for detecting current by a current transformer, rectifying and converting the detected current into a direct current voltage, and comparing the rectified voltage with a set voltage, a relay controller for controlling an operation of the relay after detecting the overload; It consists of a low voltage detection circuit that monitors the line voltage and operates the relay when the operating voltage is lower than it. The overload current, the low voltage and the operation time can be set. Overload relay which can be selected and used as return, can set the return time at the time of automatic return as well as external or internal inspection regardless of single phase or three phase.

Description

과부하 계전기Overload relay

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

제1도는 본 발명의 한 실시예를 나타낸 회로도, 제2도는 본 발명의 다른 실시예를 나타낸 회로도이다.FIG. 1 is a circuit diagram showing one embodiment of the present invention, and FIG. 2 is a circuit diagram showing another embodiment of the present invention.

Claims (2)

변류기(CT)로 부터 전류를 검출하여 직류전압으로 정류변환한 입력전압과 설정된 전압을 비교하여 과부하를 검출하는 과부하 검출부(1)와, 과부하 검출시부터 계전기 동작시까지의 지연시간을 설정하는 동작시간 설정부(2)와, 설정시간 경과후 계전기 구동부(5)를 동작하고 제어하는 계전기 제어부(3)와, 라인 전압이 설정전압이하인 경우 계전기를 동작시키는 저전압 검출회로(4)로 구성된 것을 특징으로 하는 과부하 계전기.An overload detection unit (1) for detecting an overload by comparing an input voltage rectified and converted to a DC voltage by detecting a current from a current transformer (CT) and a set voltage, and setting a delay time from an overload detection to a relay operation. A time setting section 2, a relay control section 3 for operating and controlling the relay driver 5 after a set time has elapsed, and a low voltage detection circuit 4 for operating the relay when the line voltage is below the set voltage. Overload relay. 제1항에 있어서, 계전기 구동부(5)대신에 계전기 내부에 솔레노이드(S1,S2)와 에지검출회로 및 솔레노이드 구동회로(7)를 갖는 과부하 계전기.2. The overload relay according to claim 1 , having a solenoid (S 1 , S 2 ), an edge detection circuit and a solenoid drive circuit (7) in the relay instead of the relay driver (5). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920000796A 1992-01-21 1992-01-21 Overload relay KR930017261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920000796A KR930017261A (en) 1992-01-21 1992-01-21 Overload relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920000796A KR930017261A (en) 1992-01-21 1992-01-21 Overload relay

Publications (1)

Publication Number Publication Date
KR930017261A true KR930017261A (en) 1993-08-30

Family

ID=65515397

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920000796A KR930017261A (en) 1992-01-21 1992-01-21 Overload relay

Country Status (1)

Country Link
KR (1) KR930017261A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7746617B2 (en) 2006-04-19 2010-06-29 Mitsubishi Electric Corporation Overload relay and operating method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7746617B2 (en) 2006-04-19 2010-06-29 Mitsubishi Electric Corporation Overload relay and operating method thereof

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Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
WICV Withdrawal of application forming a basis of a converted application