KR950000458Y1 - Power circuit - Google Patents

Power circuit

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Publication number
KR950000458Y1
KR950000458Y1 KR2019890005408U KR890005408U KR950000458Y1 KR 950000458 Y1 KR950000458 Y1 KR 950000458Y1 KR 2019890005408 U KR2019890005408 U KR 2019890005408U KR 890005408 U KR890005408 U KR 890005408U KR 950000458 Y1 KR950000458 Y1 KR 950000458Y1
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KR
South Korea
Prior art keywords
transistor
voltage
undervoltage
circuit
trip device
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Application number
KR2019890005408U
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Korean (ko)
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KR900019410U (en
Inventor
황인삼
Original Assignee
금성기전 주식회사
김희수
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Priority to KR2019890005408U priority Critical patent/KR950000458Y1/en
Publication of KR900019410U publication Critical patent/KR900019410U/en
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Publication of KR950000458Y1 publication Critical patent/KR950000458Y1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/128—Manual release or trip mechanisms, e.g. for test purposes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
    • H02H7/222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for switches

Abstract

내용 없음.No content.

Description

부족전압 및 원방트립장치 제어회로Undervoltage and remote trip device control circuit

제1도는 본 고안의 부족전압 및 원방트립장치 제어회로도.1 is a short circuit and remote trip device control circuit diagram of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1a, 1b : 직류화회호 2 : 조절회로부1a, 1b: DC picture call 2: control circuit

3a, 3b : 검출부 4 : 출력부3a, 3b: detection unit 4: output unit

Ta, Tb : 터미널 T1, T2: 파워트랜스Ta, Tb: Terminals T 1 , T 2 : Power transformer

RY1: 보조릴레이 D1~D12: 다이오드RY 1 : auxiliary relay D 1 ~ D 12 : diode

C1~C8: 콘덴서 R1~R4: 저항C 1 ~ C 8 : Capacitor R 1 ~ R 4 : Resistance

ZD1: 제너다이오드 VAR1: 가변저항ZD 1 : Zener Diode VAR 1 : Variable Resistor

TR1~TR3: 트랜지스터TR 1 to TR 3 : Transistor

본 고안은 차단기의 부족전압 및 원방(원거리)트립(Trip)장치에 관한 것으로 특히, 차단기의 정격전압이 규정된 전압이하로 강하할 때 부하의 소손을 방지하고, 원방에서 차단기를 차단시킬 필요가 있을 때 이용되는 부족전압 트립장치 및 원방트립장치를 일체형으로 하여 신뢰도를 높이는데 적당하도록 한 부족전압 및 원방트립장치 제어회로에 관한 것이다.The present invention relates to the undervoltage of the circuit breaker and the far (distant) trip device, in particular, it is necessary to prevent the burnout of the load when the rated voltage of the circuit breaker falls below the specified voltage, and to break the circuit breaker from a distance. The undervoltage tripping device and the far tripping device used when there are integrated are related to the undervoltage and far trip device control circuit adapted to increase reliability.

종래의 부족전압 트립장치는 전자석의 원리를 이용한 것으로 정격전압에서는 전자석이 상시 동작을 하고 있다가 규정된 전압이하로 강하하면 전자석이 능력을 상실하여 전자석 내부에 장착되어 있는 스프링의 반발력에 의하여 차단기의 트립장치를 동작시켜 차단기를 차단시키도록 되어 있다.Conventional undervoltage trip device uses the principle of electromagnet, and at the rated voltage, the electromagnet is always operated, but when the voltage drops below the specified voltage, the electromagnet loses its ability and the resistance of the breaker The trip device is operated to shut off the breaker.

이와같은 부족전압 트립장치는 실용신안공보 81-1580호 "차단기의 부족전압 트리핑장치"의 도면에 나와있는 바와같은 기술적 구성을 갖는다.This undervoltage trip device has a technical configuration as shown in the drawing of Utility Model Publication No. 81-1580, "Undervoltage tripping device of a circuit breaker."

원방트립장치 또한 부족전압 트립장치와 같이 전자석의 원리를 이용한 것으로 외부에 전압을 가한 순간 전자석의 흡인력을 이용하여 차단기의 트립장치를 동작시켜 차단기를 차단시키도록 되어 있다.The remote trip device also uses the principle of the electromagnet as the undervoltage trip device, and operates the trip device of the breaker by using the suction force of the electromagnet at the moment when a voltage is applied to the outside to cut off the breaker.

이와같은 종래 기술의 부족전압 트립장치와 원방트립장치는 각각 별도로 차단기에 장착하여 사용하였으며, 전자석의 원리를 이용하였기 때문에 동작시키고자 하는 전압범위가 크게 되어 신뢰도에 문제점이 있었다.Such a low voltage trip device and a far trip device of the prior art were separately mounted in a circuit breaker, and because of the principle of electromagnet, the voltage range to be operated was large, resulting in a problem in reliability.

본 고안은 이러한 종래의 문제점을 해결하기 위해 안출한 것으로 원방에서 차단기를 차단시킬 필요가 있을때 이용되는 부족전압 트립장치 및 원방트립장치를 일체형으로 하여 신뢰도를 높이는 것을 목적으로 한다.The present invention has been made in order to solve such a conventional problem, the object of the present invention is to increase the reliability by integrating the undervoltage trip device and the remote trip device to be used when it is necessary to block the circuit breaker from the far.

상기와 같은 목적을 달성하기 위한 본 고안의 구성을 첨부도면을 참조하여 상세히 설명하면 다음과 같다.When described in detail with reference to the accompanying drawings, the configuration of the subject innovation for achieving the above object as follows.

제1도에서 SHT부(원방트립장치의 입력부), 직류전언(DC110 또는 DC48[V] ), UVT부(부족전압 트립장치의 입력부(를 포함하는 터미널(Ta)의 SHT부는 트랜스(T1)를 거쳐 다이오드(D1~D4) 및 콘덴서(C1)로 구성된 직류화회로(1a)에 연결되고, 직류화회로(1a)는 저항(R1)과 다이오드(D5) 및 SHT스위치로 구성된 검출회로(3a)를 거쳐 출력부(4)에 연결되며, 터미널(Ta)의 UVT부는 트랜스(T2)를 거쳐 다이오드(D6~D9) 및 콘덴서(C2)로 구성된 직류화회로(1b)에 연결되고, 직류화회로(1b)는 저항(R2~R4)과 콘덴서(C3) 및 제너다이오드(ZD1), 가변저항(VAR1)으로 구성된 조절회로부(2)를 거쳐 저항(R5~R7)과 콘덴서(C4, C5) 및 다이오드(D10), 트랜지스터(TR1, TR2)로 구성된 검출회로(3b)에 연결되며, 검출회로(3b)는 보조릴레이(RY1)와 SCR1 및 트랜지스터(TR3), 다이오드(D11), 저항(R7~R11), 콘덴서(C5~C7)로 구성된 출력부(4)에 연결되고, 출력부(4)는 SHT스위치(원방트립의 스위치와 AL부(보조릴레이 출력단) 및 트립코일(차단기의 트립코일에 접속)로 구성된 터미널(Tb)에 연결되며, 직류전압(DC48[V])은 저항(R13)을 거친 직류전압(DC110[V])과 접속된 후 저항(R14)과 다이오드(D12)를 거쳐 저항(R6, R8, R10)과 다이오드(D10)의 접속점에 연경되는 구성이다.The SHT portion in Figure 1 (the input of far-field trip unit), a direct current message (DC110 or DC48 [V]), UVT unit (input unit (the undervoltage release SHT of the terminal (Ta) unit transformer (T 1) including a It is connected to the DC circuit 1a composed of diodes D 1 to D 4 and a capacitor C 1 , and the DC circuit 1a is a resistor R 1 , a diode D 5 , and an SHT switch. It is connected to the output part 4 via the configured detection circuit 3a, and the UVT part of the terminal Ta is a direct current circuit consisting of a diode D 6 to D 9 and a capacitor C 2 via a transformer T 2 . (1b), the DC circuit (1b) is a control circuit portion (2) consisting of a resistor (R 2 ~ R 4 ), a capacitor (C 3 ), a zener diode (ZD 1 ), a variable resistor (VAR 1 ) Via a resistor (R 5 ~ R 7 ), a capacitor (C 4 , C 5 ) and a diode (D 10 ), the transistor (TR 1 , TR 2 ) is connected to a detection circuit (3b), the detection circuit (3b) auxiliary relay (RY 1) and the SCR1 and the transistor (TR 3), the diode (D 11), that (R 7 ~ R 11), a capacitor (C 5 ~ C 7) to be connected to the output unit 4 is configured, the output section 4 SHT switch (switch and AL portions (auxiliary relay output terminal of the far-field trips) and trip It is connected to a terminal (Tb) consisting of a coil (connected to the trip coil of the circuit breaker), and the DC voltage (DC48 [V]) is connected to the DC voltage (DC110 [V]) through the resistor (R 13 ) and then the resistance (R). 14 ) and the diode D 12 are connected to the connection point of the resistors R 6 , R 8 , R 10 and the diode D 10 .

상기와 같이 구성된 본 고안의 동작상태 및 작용효과를 첨부도면에 따라 상세히 설명하면 다음과 같다.When described in detail according to the accompanying drawings the operating state and the effect of the present invention configured as described above are as follows.

제1도의 회로에서 우선 부족전압 트립장치 제어회로의 동작상태를 살펴보면, UVT부로 입력되는 전원이 파워트랜스(T2)를 거쳐 직류화회로(1b)에서 직류화한 다음, 조절회로부(2)에 인가하고, 조절회로부(2)에서는 동작시키고자 하는 전압의 범위를 가변저항(VAR1)과 제너다이오드(ZD1)를 이용하여 설정한다.Referring to the operation state of the undervoltage trip device control circuit in the circuit of FIG. 1, the power input to the UVT unit is first converted into the DC circuit 1b via the power transformer T 2 and then applied to the control circuit unit 2. In the control circuit section 2, the voltage range to be operated is set using the variable resistor VAR 1 and the zener diode ZD 1 .

UVT부로 입력되는 전원이 상기 설정된 전압보다 높으면 검출부(3b)의 트랜지스터(TR1)가 "온"되고, 상기 트랜지스터(TR1)의 "온"에 의해 트랜지스터(TR2)가 "오프"되고, 트랜지스터(TR3) 또는 "오프"되므로 트립코일에 출력전압이 나타나지 않고, 또한 SCR1이 동작하지 않으므로 보조릴레이가 동작하지 않아 AL부의 회로는 차단상태가 된다.The power that is input to the UVT, and the "on" transistor (TR 1) of the high detector (3b) than the preset voltage, the transistor (TR 2) "off" by the "on" of the transistor (TR 1), Since the transistor TR 3 or "off", the output voltage does not appear on the trip coil, and since the SCR1 does not operate, the auxiliary relay does not operate so that the circuit of the AL section is turned off.

그러나 UVT부로 입력되는 전원이 제너다이오드(ZD1)와 가변저항(VAR1)으로 설정된 전압보다 낮으면 부족전압으로 판단하여 트랜지스터(TR1)가 "오프"되고, 그러므로 트랜지스터(TR2)가 "온"되고, 트랜지스터(TR2)도 "온"되어 트랜지스터(TR3)에 바이어스전압이 걸리므로 트랜지스터(TR3)가 동작을 한다.However, when the power input to the UVT unit is lower than the voltage set by the zener diode ZD 1 and the variable resistor VAR 1 , the transistor TR 1 is turned “off” by determining the undervoltage and therefore the transistor TR 2 is “set”. has been "and a transistor (TR 2) is also" on "and the transistor (TR 3), since this may take a bias voltage to the transistor (TR 3) operation.

트랜지스터(TR3)가 동작하면, 트립코일 양단에 전압이 나타나므로 차단기의 트립장치를 동작시켜 차단기를 차단시키고, SCR1의 동작으로 보조릴레이(RY1)를 동작시켜 AL부의 회로가 연결되며, AL부에 연결된 도시하지 않은 램프(Lamp)나 부져(Buzzer)가 동작하여, 경보기능을 갖게 되므로 차단기의 동작상태를 외부에서 감지할 수 있게 된다.When the transistor TR 3 operates, a voltage appears across the trip coil so that the circuit breaker is operated by operating the trip device of the circuit breaker, and the circuit of the AL unit is connected by operating the auxiliary relay RY 1 by the operation of SCR1. A lamp or buzzer (not shown) connected to the unit operates to have an alarm function, so that the operation state of the circuit breaker can be detected from the outside.

또한 원방트립장치 제어회로의 동작상태를 살펴보면, SHT부의 입력이 파워트랜스(T1)를 거쳐 직류화회로(1a)에서 직류화하여 다이오드(D5)를 거쳐 트랜지스터(TR3)의 베이스에 인가된 상태에서는 트랜지스터(TR3)는 동작하지 않는다. 이때 차단기를 차단시키고자 하여 외부에서 터미널(Tb)의 SHT스위치를 눌러서 "온"시키면 트랜지스터(TR3)가 동작하여 트립코일 양단에 전압이 나타나므로 차단기의 트립장치를 동작시켜 차단기를 차단시킨다.In addition, referring to the operation state of the remote trip device control circuit, the input of the SHT unit is DC-driven in the DC circuit 1a via the power transformer T 1 and applied to the base of the transistor TR 3 via the diode D 5 . In this state, the transistor TR 3 does not operate. At this time, if you press the SHT switch of the terminal (Tb) from the outside to turn on the transistor (TR 3 ) to operate the voltage across the trip coil appears the trip device of the circuit breaker by breaking the circuit breaker.

이때에 직류전압을 전원전압으로 직접사용해도 관계없으며, SCR1이 동작하여 릴레이(RY1)를 동작시키면 AL부의 회로가 연결되므로 AL부에 도시하지 않은 경보기능을 갖는 램프와 부저를 연결하면, 차단기의 동작상태를 외부에서 쉽게 감지할 수 있게 된다.At this time, the DC voltage can be used directly as the power supply voltage, and if the SCR1 operates to operate the relay (RY 1 ), the circuit of the AL unit is connected. Therefore, if a lamp and a buzzer having an alarm function not shown in the AL unit are connected, It can be easily detected from the outside.

이상과 같이 본 고안에 따른 부족전압 및 원방트립장치 제어회로는 부족전압 트립장치와 원방트립장치를 일체형으로 구성함으로써 부족전압 트립장치 및 원방트립장치로 사용할 수 있으며, 보조 릴레이를 사용하여 경보기능 등을 추가할 수 있으며, 각각 원하는 기능만을 사용하고자 할 때에는 부족전압 트립장치 제어회로와 원방 트립장치 제어회로를 분리하여 사용할 수도 있고 기계식보다 동작전압의 범위를 정확하고 쉽게 조절가능하므로 신뢰도를 높일 수 있는 효과를 갖게 된다.As described above, the undervoltage and far trip device control circuit according to the present invention can be used as a undervoltage trip device and a far trip device by constituting the undervoltage trip device and the far trip device as an integrated type. If you want to use only the desired functions, you can separate the undervoltage trip device control circuit and remote trip device control circuit separately, and you can increase the reliability because the operating voltage range can be adjusted more accurately and easily than the mechanical one. Will have an effect.

Claims (1)

직류화 회로부와 검출회로부(2)를 갖는 부족전압 제어회로에 있어서, 정격전압 이하일 때 트랜지스터(TR1)가 "오프"되어 부족전압을 감지하는 검출부(3b)와, 상기 검출부(3b)의 트랜지스터(TR1)가 동작하지 않을 때 트랜지스터(TR2, TR3)가 "온"되어 트립코일에 전압을 발생시키는 출력부(4)와, 원방에서 차단기를 트립시키기 위해 전원입력부(SHT부)의 전원을 트랜지스터(TR3)의 베이스에 인가시키는 SHT스위치로 구성된 것을 특징으로 하는 부족전압 및 원방트립장치 제어회로.In an undervoltage control circuit having a direct current circuit portion and a detection circuit portion (2), the transistor (TR 1 ) is "off" when the voltage is below the rated voltage to detect the undervoltage, and the transistor of the detection portion (3b). When the TR 1 is not operated, the transistors TR 2 and TR 3 are turned on to generate a voltage at the trip coil, and the power input unit SHT is used to trip the breaker at a distance. An undervoltage and remote trip device control circuit comprising an SHT switch for applying a power supply to a base of a transistor TR 3 .
KR2019890005408U 1989-04-28 1989-04-28 Power circuit KR950000458Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019890005408U KR950000458Y1 (en) 1989-04-28 1989-04-28 Power circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019890005408U KR950000458Y1 (en) 1989-04-28 1989-04-28 Power circuit

Publications (2)

Publication Number Publication Date
KR900019410U KR900019410U (en) 1990-11-09
KR950000458Y1 true KR950000458Y1 (en) 1995-01-27

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KR2019890005408U KR950000458Y1 (en) 1989-04-28 1989-04-28 Power circuit

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KR (1) KR950000458Y1 (en)

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Publication number Publication date
KR900019410U (en) 1990-11-09

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