KR100894213B1 - Apparatus and method for warning a change time of vacuum cricuit breaker in electric furnace - Google Patents

Apparatus and method for warning a change time of vacuum cricuit breaker in electric furnace Download PDF

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KR100894213B1
KR100894213B1 KR1020070116226A KR20070116226A KR100894213B1 KR 100894213 B1 KR100894213 B1 KR 100894213B1 KR 1020070116226 A KR1020070116226 A KR 1020070116226A KR 20070116226 A KR20070116226 A KR 20070116226A KR 100894213 B1 KR100894213 B1 KR 100894213B1
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South Korea
Prior art keywords
circuit breaker
vacuum circuit
alarm
replacement time
vacuum
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KR1020070116226A
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Korean (ko)
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오세웅
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현대제철 주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/28—Arrangement of controlling, monitoring, alarm or the like devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
    • F27D21/02—Observation or illuminating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
    • F27D21/04—Arrangements of indicators or alarms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • F27D2007/066—Vacuum

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)

Abstract

An apparatus and a method for alarming the replacement time of a vacuum breaker in an electric furnace are provided to inform proper time of repair and replacement by detecting the power passing through a metal relay in a controller. An apparatus for alarming the replacement time of a vacuum breaker(100) in an electric furnace comprises a sensing part(300) which detects the power applied to a meta relay of a controller(200) controlling the vacuum breaker, a control part(400) determining repair and replacement time of the vacuum breaker based on the sensing signal of the sensing part and generating the alarm signal according to the determination result, and an alarm part(500) informing repair and replacement time of the vacuum breaker based on the alarm signal from the control part.

Description

전기로용 진공차단기 교체시기 알람 장치 및 방법{APPARATUS AND METHOD FOR WARNING A CHANGE TIME OF VACUUM CRICUIT BREAKER IN ELECTRIC FURNACE}Alarm device and method for replacing vacuum breaker for electric furnace {APPARATUS AND METHOD FOR WARNING A CHANGE TIME OF VACUUM CRICUIT BREAKER IN ELECTRIC FURNACE}

본 발명은 전기로용 진공차단기에 관한 것으로, 더욱 상세하게는 전기로용 진공차단기의 정비 및 교체시기를 알려주는 전기로용 진공차단기 교체시기 알람장치 및 방법에 관한 것이다.The present invention relates to a vacuum circuit breaker for an electric furnace, and more particularly, to a vacuum circuit breaker replacement time alarm device and method for informing the maintenance and replacement of the vacuum circuit breaker for the furnace.

일반적으로 전기로는 전기양도체인 전극에 전류를 통함으로써 전극과 철 스크랩 사이에 발생하는 아크(ARC) 열에 의하여 고철을 용해, 정련하여 강을 제조하는 설비이다. 전기로는 진공차단기를 통해 공급되는 전원에 의해 구동한다. 여기서, 진공차단기는 진공 중의 높은 절연내력을 이용하여 아크 생성물을 진공 중 급속한 확산을 이용하여 소호하는 차단기로서 전기로로 공급되는 전력의 송수전, 절체 및 정지 등을 제어한다.In general, an electric furnace is a facility for manufacturing steel by dissolving and refining scrap metal by arc (ARC) heat generated between an electrode and an iron scrap by passing an electric current through an electrode, which is an electric conductor. The electric furnace is driven by the power supplied through the vacuum circuit breaker. Here, the vacuum circuit breaker is a circuit breaker that extinguishes the arc product by rapid diffusion in the vacuum by using a high dielectric strength in the vacuum to control the transmission and transmission, transfer and stop of the power supplied to the electric furnace.

이러한 종래의 진공차단기에서는 작업자가 진공차단기의 이상 여부를 육안으로 확인하는 과정에서 진공차단기의 이상 여부를 정확히 파악하지 못하는 경우가 발생한다. 그리하면, 진공차단기가 적절한 정비 및 교체되지 못하여 진공차단기의 오작동 및 고장으로 인한 조업손실이 발생하는 문제점이 있다. In such a conventional vacuum circuit breaker, a worker may not accurately grasp whether the vacuum circuit breaker is abnormal in the process of visually checking whether the vacuum circuit breaker is abnormal. Thus, there is a problem that the operation of the vacuum circuit breaker due to malfunction and failure of the vacuum circuit breaker is not properly maintained and replaced.

본 발명은 상기한 종래의 문제점을 감안하여 제안된 것으로서, 그 목적은 진공차단기의 정비 및 교체시기를 판단하고 그 결과에 따라 진공차단기의 정비 및 교체시기의 도래를 알려주도록 한 전기로용 진공차단기 교체시기 알람 장치 및 방법을 제공함에 있다.The present invention has been proposed in view of the above-described conventional problems, and an object thereof is to determine the maintenance and replacement timing of the vacuum circuit breaker and to notify the arrival of the maintenance and replacement of the vacuum circuit breaker according to the result. The present invention provides an alarm device and method.

상기한 목적을 달성하기 위하여 본 발명에 따른 전기로용 진공차단기 교체시기 알람 장치는, 진공차단기의 교체시기를 알려주는 장치에 있어서, 진공차단기를 제어하는 제어기의 메타릴레이에 인가되는 전원을 감지하는 감지부; 감지부로부터의 감지신호를 근거로 진공차단기의 정비 및 교체시기를 판단하고, 그 판단결과에 따른 알람신호를 발생하는 제어부; 및 제어부로부터의 알람신호에 근거하여 진공차단기의 정비 및 교체시기의 도래를 알려주는 알람부를 포함한다.In order to achieve the above object, a circuit breaker replacement time alarm device for an electric furnace according to the present invention is a device for indicating a replacement time of a vacuum circuit breaker, the sensing sensing power applied to a meta relay of a controller controlling the vacuum circuit breaker. part; A control unit for determining a maintenance and replacement time of the vacuum circuit breaker based on the detection signal from the detection unit, and generating an alarm signal according to the determination result; And an alarm unit for notifying the arrival of the maintenance and replacement time of the vacuum circuit breaker based on the alarm signal from the controller.

제어부는, 진공차단기의 오프상태에서 감지부로부터 전원감지신호를 수신하면 진공차단기의 정비 및 교체시기로 판단한다.If the control unit receives the power detection signal from the sensing unit in the off state of the vacuum circuit breaker, the controller determines that the vacuum circuit breaker is to be maintained or replaced.

알람부는 발광소자, 액정표시장치, 부저 중 하나 이상을 포함한다.The alarm unit includes at least one of a light emitting device, a liquid crystal display, and a buzzer.

상기한 목적을 달성하기 위하여 본 발명에 따른 전기로용 진공차단기 교체시기 알람 방법은, 전기로용 진공차단기의 교체시기를 알려주는 방법에 있어서, 감지부가, 진공차단기를 제어하는 제어기의 메타릴레이에 인가되는 전원을 감지하는 감 지단계; 제어부가, 감지부로부터의 감지신호를 근거로 진공차단의 정비 및 교체시기를 판단하는 판단단계; 및 알람부가, 제어부로부터의 알람신호에 근거하여 진공차단기의 정비 및 교체시기의 도래를 알려주는 알람단계를 포함한다.In order to achieve the above object, the electric furnace vacuum circuit breaker replacement time alarm method according to the present invention is a method of informing the replacement time of the electric circuit vacuum circuit breaker, wherein the sensing unit is applied to the meta relay of the controller controlling the vacuum circuit breaker. A sensing step of sensing power; A determination step of determining, by the controller, the maintenance and replacement timing of the vacuum cutoff based on the detection signal from the detection unit; And an alarm unit for notifying the arrival of the maintenance and replacement of the vacuum circuit breaker based on the alarm signal from the controller.

판단단계에서는, 제어부가 진공차단기의 오프상태에서 감지부로부터 전원감지신호를 수신하면 진공차단기의 정비 및 교체시기로 판단한다.In the determining step, when the control unit receives the power detection signal from the detection unit in the off state of the vacuum circuit breaker, it is determined that the vacuum circuit breaker is in maintenance and replacement time.

본 발명에 의하면, 진공차단기를 제어하는 진공차단기 제어기의 내부에 설치된 메타릴레이에 인가되는 전원을 감지하여 진공차단기의 정비 및 교체시기를 판단하고 그 결과에 따라 진공차단기의 정비 및 교체시기의 도래를 알려줌으로써, 진공차단기를 적절한 시기에 정비 및 교체하는 것이 가능하다. 또한, 진공차단기의 오작동 및 고장으로 인한 조업손실을 최소화하는 것이 가능하다.According to the present invention, by sensing the power applied to the meta relay installed inside the vacuum circuit breaker controller for controlling the vacuum circuit breaker to determine the maintenance and replacement time of the vacuum circuit breaker and the arrival of the maintenance and replacement of the vacuum circuit breaker according to the result By indicating, it is possible to service and replace the vacuum breaker in a timely manner. In addition, it is possible to minimize operational losses due to malfunction and failure of the vacuum circuit breaker.

이하, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명의 기술적 사상을 용이하게 실시할 수 있을 정도로 상세히 설명하기 위하여, 본 발명에 따른 전기로용 진공차단기 교체시기 알람 장치를 도 1 및 도 2를 참조하여 상세하게 설명하면 다음과 같다.Hereinafter, in order to explain in detail that a person skilled in the art can easily implement the technical idea of the present invention, the vacuum circuit breaker replacement time alarm device for an electric furnace according to the present invention 1 and FIG. The detailed description with reference to 2 as follows.

도 1은 본 발명의 실시예에 따른 전기로용 진공차단기 교체시기 알람 장치의 구성을 설명하기 위한 블록도이고, 도 2는 본 발명의 감지부를 설명하기 위한 진공차단기 제어기(200)의 회로도이다.1 is a block diagram illustrating a configuration of an alarm device for replacing a vacuum circuit breaker for an electric furnace according to an exemplary embodiment of the present invention, and FIG. 2 is a circuit diagram of a vacuum circuit breaker controller 200 for explaining a sensing unit of the present invention.

도 1에 도시된 바와 같이, 본 발명에 따른 전기로용 진공차단기 교체시기 알람 장치는 감지부(300), 제어부(400), 알람부(500)를 포함한다.As shown in FIG. 1, the apparatus for replacing a vacuum circuit breaker for an electric furnace according to the present invention includes a detector 300, a controller 400, and an alarm unit 500.

감지부(300)는 진공차단기 제어기(200)의 메타릴레이(600)에 인가되는 전원을 감지한다. 예를 들면, 감지부(300)는 도 2에 도시된 바와 같은, 진공차단기 제어기(200)의 메타릴레이(600)와 연결되어 메타릴레이(600)에 인가되는 전원을 감지한다. 감지부(300)는 메타릴레이(600)에 전원이 인가되면 이를 감지하여 전원감지신호를 발생한다.The detector 300 detects power applied to the meta relay 600 of the vacuum circuit breaker controller 200. For example, the sensing unit 300 is connected to the meta relay 600 of the vacuum circuit breaker controller 200 as illustrated in FIG. 2 to sense power applied to the meta relay 600. The detector 300 detects when power is applied to the meta relay 600 and generates a power detection signal.

제어부(400)는 감지부(300)로부터의 감지신호를 근거로 진공차단기(100)의 정비 및 교체시기를 판단하고, 그 판단결과에 따른 알람신호를 발생한다. 즉, 제어부(400)는 진공차단기(100)의 오프상태에서 감지부(300)로부터 전원감지신호를 수신하면 진공차단기(100)의 점검 및 교체시기로 판단하여 알람신호를 발생한다. 여기서, 진공차단기(100)의 오프상태를 감지하는 방법은 동종업계에 종사하는 자라면 쉽게 이해할 수 있는 내용이므로 상세한 설명을 생략한다.The control unit 400 determines the maintenance and replacement time of the vacuum circuit breaker 100 based on the detection signal from the detection unit 300 and generates an alarm signal according to the determination result. That is, when the controller 400 receives the power detection signal from the detector 300 in the off state of the vacuum circuit breaker 100, the controller 400 determines that the vacuum circuit breaker 100 is to be inspected and replaced, and generates an alarm signal. Here, the method for detecting the off state of the vacuum circuit breaker 100 is easily understood by those skilled in the same industry, and thus detailed description thereof will be omitted.

알람부(500)는 제어부(400)로부터의 알람신호에 근거하여 진공차단기(200)의 정비 및 교체시기의 도래를 알려준다. 여기서, 알람부(300)는 진공차단기 제어기(200) 또는 운전실에 설치되는 발광소자, 액정표시장치, 부저 등이 사용된다. 예를 들어, 발광소자가 설치된 알람부(300)에서는 제어부(400)에서 알람신호를 수신하면 발광소자가 점등(또는 점멸)하여 작업자(또는 운전자)에게 진공차단기의 정비 및 교체시기의 도래를 알려준다.The alarm unit 500 notifies the arrival of the maintenance and replacement time of the vacuum circuit breaker 200 based on the alarm signal from the controller 400. Here, the alarm unit 300 may be a light emitting device, a liquid crystal display, a buzzer, or the like installed in the vacuum breaker controller 200 or the cab. For example, in the alarm unit 300 in which the light emitting device is installed, when the control unit 400 receives the alarm signal, the light emitting device is turned on (or flashes) to inform the operator (or driver) of the maintenance and replacement of the vacuum circuit breaker. .

이하, 본 발명에 따른 전기로용 진공차단기 교체시기 알람 방법의 바람직한 실시예를 도 3의 흐름도를 참조하여 상세하게 설명하면 다음과 같다.Hereinafter, a preferred embodiment of the vacuum circuit breaker replacement time alarm method according to the present invention will be described in detail with reference to the flowchart of FIG. 3.

전기로는 진공차단기(100)를 통해 공급되는 전원에 의해 구동하여 내부의 철 스크랩을 용해, 정련한다. 이때, 감지부(300)는 진공차단기 제어기(200)의 메타릴레이(600)에 인가되는 전원을 감지한다(S10). 예를 들면, 감지부(300)는 진공차단기(100)를 제어하는 진공차단기 제어기(200)의 메타릴레이(600)에 전원이 인가되면 전원감지신호를 발생한다. 감지부(300)는 진공차단기(100)를 제어하는 진공차단기 제어기(200)의 메타릴레이(600)에 전원이 인가되지 않으면 전원비감지신호를 발생한다.The electric furnace is driven by the power supplied through the vacuum circuit breaker 100 to dissolve and refine the iron scrap therein. At this time, the sensing unit 300 detects power applied to the meta relay 600 of the vacuum circuit breaker controller 200 (S10). For example, the detector 300 generates a power detection signal when power is applied to the meta relay 600 of the vacuum circuit breaker controller 200 that controls the vacuum circuit breaker 100. The detector 300 generates a power non-detection signal when power is not applied to the meta relay 600 of the vacuum circuit breaker controller 200 that controls the vacuum circuit breaker 100.

진공차단기(100)가 오프상태이면(S20;YES), 제어부(400)는 진공차단기(100)의 점검 및 교체시기를 판단한다(S30). 여기서, 제어부(400)는 진공차단기(100)가 오프상태에서 감지부(300)로부터 전원감지신호를 수신하면 진공차단기(100)의 점검 및 교체시기가 도래한 것으로 판단한다.If the vacuum circuit breaker 100 is in an off state (S20; YES), the controller 400 determines the inspection and replacement time of the vacuum circuit breaker 100 (S30). Here, when the vacuum breaker 100 receives the power detection signal from the detector 300 in the off state, the controller 400 determines that the inspection and replacement time of the vacuum breaker 100 has arrived.

진공차단기(100)의 점검 및 교체시기로 판단되면(S40;YES), 제어부(400)는 진공차단기(100)의 점검 및 교체시기가 도래했음을 알려주기 위한 알람신호를 발생한다(S50).If it is determined that the check and replacement time of the vacuum circuit breaker 100 (S40; YES), the control unit 400 generates an alarm signal for notifying that the check and replacement time of the vacuum circuit breaker 100 has arrived (S50).

알람부(500)는 제어부(400)로부터 알람신호를 수신하면 알람을 발생시켜 작업자(또는 운전자)에게 진공차단기(100)의 점검 및 교체시기가 도래한 것을 알려준 다(S60). 예를 들면, 알람부(500)는 제어부(400)로부터 알람신호를 수신하면 진공차단기 제어기(200) 또는 운전부에 설치된 발광장치를 점등(또는 점멸)하여 작업자(또는 운전자)에게 진공차단기(100)의 점검 및 교체시기가 도래한 것을 알려준다. 이처럼, 진공차단기(100)를 제어하는 진공차단기 제어기(200)의 내부에 설치된 메타릴레이(600)에 인가되는 전원을 감지하여 진공차단기(100)의 정비 및 교체시기를 판단하고 그 결과에 따라 진공차단기(100)의 정비 및 교체시기의 도래를 알려줌으로써, 진공차단기(100)를 적절한 시기에 정비 및 교체하는 것이 가능하다. 또한, 진공차단기(100)의 오작동 및 고장으로 인한 조업손실을 최소화하는 것이 가능하다.When the alarm unit 500 receives an alarm signal from the control unit 400, an alarm is generated to inform an operator (or driver) that the inspection and replacement time of the vacuum circuit breaker 100 has arrived (S60). For example, when the alarm unit 500 receives an alarm signal from the control unit 400, the alarm circuit 200 turns on (or flashes) the light emitting device installed in the vacuum circuit breaker controller 200 or the driving unit to give a vacuum breaker 100 to an operator (or driver). Indicates the time of inspection and replacement. As such, by detecting the power applied to the meta relay 600 installed inside the vacuum circuit breaker controller 200 controlling the vacuum circuit breaker 100, the maintenance and replacement time of the vacuum circuit breaker 100 may be determined, and the vacuum may be determined according to the result. By informing the arrival of the maintenance and replacement time of the circuit breaker 100, it is possible to maintain and replace the vacuum circuit breaker 100 at an appropriate time. In addition, it is possible to minimize operational losses due to malfunction and failure of the vacuum circuit breaker 100.

이상에서, 본 발명에 따른 바람직한 실시예에 대해 설명하였으나, 본 발명의 요지를 벗어나지 않는 범위 내에서 다양한 형태로의 변형 및 수정이 가능하며, 본 기술분야에서 통상의 지식을 가진자라면 본 발명의 특허청구범위를 벗어남이 없이 다양한 변형예 및 수정예를 실시할 수 있을 것으로 이해된다.In the above, the preferred embodiment according to the present invention has been described, but various modifications and changes can be made without departing from the gist of the present invention, and those of ordinary skill in the art It is understood that various modifications and variations can be made without departing from the scope of the claims.

도 1은 본 발명의 실시예에 따른 전기로용 진공차단기 교체시기 알람 장치의 구성을 설명하기 위한 블록도이다.1 is a block diagram illustrating a configuration of an alarm device for replacing a vacuum circuit breaker for an electric furnace according to an exemplary embodiment of the present invention.

도 2는 본 발명의 감지부를 설명하기 위한 회로도이다.2 is a circuit diagram illustrating a sensing unit of the present invention.

도 3은 본 발명의 실시예에 따른 전기로용 진공차단기 교체시기 알람 방법을 구체적으로 설명하기 위한 흐름도이다.Figure 3 is a flow chart for explaining in detail the alarm method for replacing the vacuum circuit breaker for an electric furnace according to an embodiment of the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

100: 진공차단기 200: 진공차단기 제어기100: vacuum circuit breaker 200: vacuum circuit breaker controller

300: 감지부 400: 제어부300: detection unit 400: control unit

500: 알람부 600: 메타릴레이500: alarm unit 600: meta relay

Claims (5)

진공차단기의 교체시기를 알려주는 장치에 있어서,In the device that tells the replacement time of the vacuum circuit breaker, 상기 진공차단기를 제어하는 제어기의 메타릴레이에 인가되는 전원을 감지하는 감지부;A detector for sensing power applied to the meta relay of the controller controlling the vacuum circuit breaker; 상기 감지부로부터의 감지신호를 근거로 상기 진공차단기의 정비 및 교체시기를 판단하고, 그 판단결과에 따른 알람신호를 발생하는 제어부; 및A controller for determining maintenance and replacement timing of the vacuum circuit breaker based on a detection signal from the detector, and generating an alarm signal according to the determination result; And 상기 제어부로부터의 알람신호에 근거하여 상기 진공차단기의 정비 및 교체시기의 도래를 알려주는 알람부를 포함하고,An alarm unit for notifying the arrival of the maintenance and replacement time of the vacuum circuit breaker based on an alarm signal from the controller, 상기 제어부는, 상기 진공차단기의 오프상태에서 상기 감지부로부터 전원감지신호를 수신하면 상기 진공차단기의 정비 및 교체시기로 판단하는 것을 특징으로 하는 전기로용 진공차단기 교체시기 알람 장치.The control unit, when receiving the power detection signal from the detection unit in the off state of the vacuum circuit breaker, the vacuum circuit breaker replacement time alarm device, characterized in that for determining the maintenance and replacement time of the vacuum circuit breaker. 삭제delete 청구항 1에 있어서,The method according to claim 1, 상기 알람부는, 발광소자, 액정표시장치, 부저 중 하나 이상을 포함하는 것을 특징으로 하는 전기로용 진공차단기 교체시기 알람 장치.The alarm unit, a vacuum circuit breaker replacement time alarm device, characterized in that it comprises at least one of a light emitting element, a liquid crystal display device, a buzzer. 전기로용 진공차단기의 교체시기를 알려주는 방법에 있어서,In the method of informing when to replace the vacuum circuit breaker for the furnace, 감지부가, 상기 진공차단기를 제어하는 제어기의 메타릴레이에 인가되는 전원을 감지하는 감지단계;A sensing step of sensing a power applied to a meta relay of a controller controlling the vacuum circuit breaker; 제어부가, 상기 감지부로부터의 감지신호를 근거로 상기 진공차단의 정비 및 교체시기를 판단하는 판단단계; 및A determination step of a control unit determining a maintenance and replacement time of the vacuum cut-off based on a detection signal from the detection unit; And 알람부가, 상기 제어부로부터의 알람신호에 근거하여 상기 진공차단기의 정비 및 교체시기의 도래를 알려주는 알람단계를 포함하고,An alarm unit includes an alarm step of notifying the arrival of the maintenance and replacement time of the vacuum circuit breaker based on the alarm signal from the control unit, 상기 판단단계에서는, 상기 제어부가 상기 진공차단기의 오프상태에서 상기 감지부로부터 전원감지신호를 수신하면 상기 진공차단기의 정비 및 교체시기로 판단하는 것을 특징으로 하는 전기로용 진공차단기 교체시기 알람 방법.In the determining step, when the control unit receives the power detection signal from the detection unit in the off state of the vacuum circuit breaker, the vacuum circuit breaker replacement time alarm method for the furnace characterized in that it determines that the maintenance and replacement time of the vacuum circuit breaker. 삭제delete
KR1020070116226A 2007-11-14 2007-11-14 Apparatus and method for warning a change time of vacuum cricuit breaker in electric furnace KR100894213B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0146085B1 (en) * 1995-02-09 1998-10-01 이종수 Self diagnostic apparatus of a vacuum breaker
KR100259183B1 (en) 1995-04-14 2000-06-15 이종수 A checking device for the trip coil of vacuum circuit breakers
KR20000039853A (en) * 1998-12-16 2000-07-05 이구택 Diagnosis apparatus of vcb for electric furnace

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0146085B1 (en) * 1995-02-09 1998-10-01 이종수 Self diagnostic apparatus of a vacuum breaker
KR100259183B1 (en) 1995-04-14 2000-06-15 이종수 A checking device for the trip coil of vacuum circuit breakers
KR20000039853A (en) * 1998-12-16 2000-07-05 이구택 Diagnosis apparatus of vcb for electric furnace

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