KR20000052024A - A dectctor of short circuit for electric line - Google Patents
A dectctor of short circuit for electric line Download PDFInfo
- Publication number
- KR20000052024A KR20000052024A KR1019990002808A KR19990002808A KR20000052024A KR 20000052024 A KR20000052024 A KR 20000052024A KR 1019990002808 A KR1019990002808 A KR 1019990002808A KR 19990002808 A KR19990002808 A KR 19990002808A KR 20000052024 A KR20000052024 A KR 20000052024A
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- South Korea
- Prior art keywords
- insulating material
- iron core
- contact portion
- leakage
- current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/40—Arrangements for displaying electric variables or waveforms using modulation of a light beam otherwise than by mechanical displacement, e.g. by Kerr effect
- G01R13/404—Arrangements for displaying electric variables or waveforms using modulation of a light beam otherwise than by mechanical displacement, e.g. by Kerr effect for discontinuous display, i.e. display of discrete values
Abstract
Description
본 발명은 전기 선로의 누전 검출장치, 보다 상세하게는 배전선로 누전경보기의 오동작을 방지하고 누전 여부를 감지하기 위해 영상변류기를 전기시설물의 선로에 설치할 때 정전을 방지한 상태에서 간편하게 착탈시킴과 아울러 유도전류에 의한 오동작을 방지하여 검출 성능을 향상시킬 수 있게한 전기 선로의 누전 검출장치에 관한 것이다.The present invention provides a device for detecting a short circuit of an electric line, and more particularly, in order to prevent a malfunction of a short circuit alarm of a distribution line and to detect a short circuit. The present invention relates to a short circuit detecting apparatus for an electric line, which prevents malfunction due to induced current and improves detection performance.
일반적으로, 각종 전기시설물에는 누전으로 인한 안전사고 및 재해를 방지하면서 기기를 보호하기 위한 영상변류기(Zero-phase-sequence Current Transfomer ; ZCT)와 누전경보기(Leakage Alarm) 등이 설치되어 있다.In general, various electrical facilities are equipped with a Zero-phase-sequence Current Transfomer (ZCT) and a Leakage Alarm to protect the device while preventing safety accidents and disasters caused by a short circuit.
도 1은 일반적인 누전 검출설비의 일예를 나타낸 것으로, 링형으로 된 철심의 중심부에 3상의 도체(2)를 일체로 통과되게 하되 철심의 외주연에 2차권선을 감아서 자기적으로 평형된 영상전류를 얻는 영상변류기(1)와 누전경보기(3)를 연결되게 한 구성으로 되어 있다.1 shows an example of a general earth leakage detecting apparatus, and a three-phase conductor 2 is integrally passed through a central portion of a ring-shaped iron core, but a magnetically balanced image current is wound around a secondary winding on the outer circumference of the iron core. The video current transformer 1 and the ground fault alarm 3 are connected to each other.
그러나 상기 영상변류기(1)는 1차에 200mA의 전류가 흐를 때 2차 출력이 1.5mA라는 매우 작은 전류가 흐르게 되므로 상기 영상변류기(1)와 누전경보기(3)의 사이에 강한 자장이나 전자파에 의해 유도전류가 발생되면서 누전경보기로 유입됨으로써 오동작이 발생되었고, 상기 기기를 연결하는 선로가 길 경우 선로저항(임피던스)에 의해 누전이 발생될 경우에도 오히려 더작은 전류가 흐르게 되어 동작이 되지 않는 문제점이 있었다.However, since the current transformer 1 has a very small current of 1.5 mA when the secondary output flows at a current of 200 mA in the first phase, the image current transformer 1 has a strong magnetic field or electromagnetic wave between the current transformer 1 and the ground fault alarm 3. Due to the induced current generated by the inflow to the earth leakage alarm, malfunction occurred. When the line connecting the device is long, even if a short circuit occurs due to the line resistance (impedance), rather a small current flows and does not work. There was this.
특히, 링형의 철심을 관통되게 선로를 설치하기 위해 전기공급을 중단되게 한 상태에서 선로를 절단해야 만이 설치가 가능함으로써, 정전이 발생되는 불편과 작업이 번거로워지는 등의 문제점도 있었다.In particular, only the cutting of the line in the state in which the power supply is interrupted in order to install the line to pass through the ring-shaped iron core can be installed, there was also a problem such as the inconvenience of the power outage and cumbersome work.
본 발명은 위와 같은 종래의 누전설비의 여러 문제점을 감안하여 안출한 것으로, 그 목적은 영상변류기의 설치를 간편하게 함과 아울러 오동작을 최소화 할 수 있는 전기 선로의 누전 검출장치를 제공하는 것이다.The present invention has been made in view of the various problems of the conventional earth leakage equipment as described above, the object is to provide an electric line leakage detection device that can simplify the installation of the image current transformer and minimize the malfunction.
이러한 목적을 달성하기 위한 본 발명은, 영상변류기의 철심부위를 그 중앙의 선로가 통과되는 부위를 분리 및 결합되게 하고 영상변류기의 일측에 누설전류를 검출하여 표출시키는 표시장치를 일체로 부설함에 따라, 영상변류기의 설치를 간편하게 하여 작업공수와 비용을 절감함과 동시에 원거리에서도 정확하게 누전을 감지하게 된 것을 특징으로 한다.In order to achieve the above object, the present invention provides an iron core part of an image transformer to separate and couple a portion through which a central line passes, and integrally install a display device for detecting and expressing a leakage current on one side of the image transformer. In addition, by simplifying the installation of the video current transformer, it is possible to reduce the labor and cost, and at the same time it detects a short circuit accurately even at a long distance.
도 1은 일반적인 누전 검출설비의 일예를 나타낸 구성도,1 is a configuration diagram showing an example of a general electrical leak detecting apparatus;
도 2 및 도 3은 본 발명의 영상변류기를 이용한 누전 검출기의 결합상태와 그 분리상태 사시도,2 and 3 are a perspective view of the coupled state and the separated state of the ground fault detector using the image current transformer of the present invention,
도 4는 상기 누전 검출기의 분리하여 일부를 절취한 평면구성도,4 is a planar configuration diagram of a part of the earth leakage detector separated and cut away;
도 5는 본 발명의 누전 검출기의 사용상태를 나타낸 사시도,5 is a perspective view showing a state of use of the earth leakage detector of the present invention;
도 6은 본 발명의 누전 검출기의 블럭구성도이다.6 is a block diagram of the earth leakage detector of the present invention.
< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>
10 : 철심11 : 접촉부10 iron core 11 contact portion
20 : 절연재21 : 연장부20: insulation material 21: extension part
22 : 플랜지23 : 볼트22: flange 23: bolt
30 : 작동입력절환부30: operation input switching unit
40 : 표시장치50 : 전원부40: display device 50: power supply
이하, 본 발명의 전기 선로의 누전 검출장치를 첩부도면을 참조하여 설명하면 다음과 같다.Hereinafter, the electrical leak detecting apparatus for an electric line according to the present invention will be described with reference to the attached drawings.
도 2 및 도 3은 본 발명의 영상변류기를 이용한 누전 검출기의 결합상태와 그 분리상태 사시도이고, 도 4는 상기 누전 검출기를 분리하여 일부를 절취한 평면구성도로서, 상호 마주보게 결합할 때 링형으로 합체되어 선로(W)가 통과되게 철심(10)을 반원형으로 형성하여 그 접촉부(12)를 제외한 나머지 부위를 합성수지로 된 절연재(20)로 피복한다.2 and 3 are a perspective view of the coupled state and the separated state of the ground fault detector using the image current transformer of the present invention, Figure 4 is a planar configuration diagram of a portion of the leakage detector is separated by the ring-shaped when combined to face each other The iron core 10 is formed in a semi-circular shape so as to pass through the line W, and the remaining portion except the contact portion 12 is covered with the insulating material 20 made of synthetic resin.
상기 절연재(20)로부터 노출된 철심(10)의 접촉부(11)는 양측을 상호 마주보게 결합할 때 그 결합부가 맞물리도록 요철형으로 형성되어 있다.The contact portion 11 of the iron core 10 exposed from the insulating material 20 is formed in a concave-convex shape so that the coupling portion is engaged when both sides are coupled to face each other.
양측 절연재(20)가 밀착되는 부위의 상하단부에는 결합공을 구비한 플랜지(22)가 형성되어 있고, 각 플랜지(22)는 적어도 하나의 볼트(23)가 매립상태로 체결되어 있다.Flange 22 provided with a coupling hole is formed in the upper-lower end part of the site | part to which the both side insulating materials 20 closely contact, and each flange 22 has the at least 1 bolt 23 fastened in the embedded state.
도 5는 본 발명의 누전 검출기의 사용상태를 나타낸 사시도이고, 도 6은 본 발명의 누전 검출기의 블럭구성도로서, 상기 절연재(20)의 일측에는 연장부(21)가 형성되어 있고, 이 연장부(21)에는 철심(10)으로부터 흐르는 전류를 증폭하는 작동입력절환부(30)가 설치되어 있다.FIG. 5 is a perspective view showing a state of use of the ground fault detector of the present invention, and FIG. 6 is a block diagram of the ground fault detector of the present invention. An extension part 21 is formed at one side of the insulating material 20. The unit 21 is provided with an operation input switching unit 30 for amplifying a current flowing from the iron core 10.
이 작동입력절환부(30)는 바이어스회로와 증폭부를 거쳐 누설전류가 검출될 때 경고등 및 경보음을 발생시키는 표시장치(40)와 릴레이를 접점시키는 전원부(50)에 연결되어 있다.The operation input switching unit 30 is connected to the display unit 40 for generating a warning light and an alarm sound when the leakage current is detected through the bias circuit and the amplifying unit and the power supply unit 50 for contacting the relay.
따라서 상기와 같은 본 발명은 전기시설물의 선로(W)에 통상의 기능을 갖는 영상변류기를 설치하고자 할 때, 먼저 반원형의 철심(10)이 피복된 절연재(20)를 분리되게 한 상태에서 선로(W)의 외측으로부터 감싸지게 하여 그 플랜지(22)를 밀착되게 한 후 볼트(23)로 고정하게 됨으로써 간단하게 설치를 완료하게 된다.Therefore, in the present invention as described above, when the image current transformer having a normal function is installed on the line (W) of the electric facility, first, the semicircular iron core (10) is separated from the insulating material (20) coated with the line ( It is wrapped from the outside of W), the flange 22 is brought into close contact, and then fixed with a bolt 23, thereby simply completing the installation.
상기 양측의 절연재(20)를 결합할 때 그 외부로 노출된 접촉부(11)는 요철형으로 되어있으므로, 다수의 철심을 순차적으로 어긋나게 한 상태에서 결합되어 긴밀한 밀착력을 제공하게 된다.When the both sides of the insulating material 20 is coupled to the contact portion 11 exposed to the outside is of concave-convex type, it is coupled in a state where a plurality of iron cores are sequentially shifted to provide a close adhesion.
또한 철심(10)에 인접하여 일측 절연재(20)에 작동입력절환부(30)와 표시장치(40) 등이 일체로 설치되어 있으므로, 인출선로에 가해지는 전계의 영향을 방지하여 오동작의 발생률을 최소화 할 수 있으로, 이에 따라 철심(10)에서 검출된 미세한 누설전류는 작동입력절환부(30)를 거쳐 증폭되고 기준탭에 의하여 설정치 이상일 때 표시장치 및 릴레이 접점이 동작됨으로써, 접점에서 인출된 선로를 따라 경고등과 경보음 등이 발생되어 누전을 감지하는 것이다.In addition, since the operation input switching unit 30 and the display device 40 are integrally installed at one side of the insulating material 20 adjacent to the iron core 10, the occurrence rate of the malfunction is prevented by preventing the influence of the electric field applied to the lead wire. As a result, the minute leakage current detected by the iron core 10 is amplified through the operation input switching unit 30, and when the display device and the relay contact are operated when the set value is larger than the set value by the reference tap, the display device and the relay contact are drawn out from the contact. Warning lights and alarm sounds occur along the track to detect short circuits.
이와 같은 본 발명의 전기 선로의 누전 검출장치는 선로가 통과되는 영상변류기의 중앙부위를 반원형으로 분리 및 결합되게 하고 영상변류기의 일측에 누설전류를 검출하여 표출시키는 표시장치를 일체로 부설함에 따라, 영상변류기의 설치를 간편하게 하여 작업공수와 비용을 절감함과 동시에 원거리에서도 정확하게 누전을 감지할 수 있는 효과가 있다.The electrical leakage detecting apparatus of the electric line of the present invention is to separate and combine the central portion of the image current transformer through which the line passes in a semi-circular shape, and to integrally install a display device for detecting and expressing leakage current on one side of the image current transformer. By simplifying the installation of the video current transformer, it saves labor and cost, and has the effect of accurately detecting a short circuit at a long distance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990002808A KR100315206B1 (en) | 1999-01-29 | 1999-01-29 | A dectctor of short circuit for electric line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990002808A KR100315206B1 (en) | 1999-01-29 | 1999-01-29 | A dectctor of short circuit for electric line |
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| Publication Number | Publication Date |
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| KR20000052024A true KR20000052024A (en) | 2000-08-16 |
| KR100315206B1 KR100315206B1 (en) | 2001-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019990002808A KR100315206B1 (en) | 1999-01-29 | 1999-01-29 | A dectctor of short circuit for electric line |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030090251A (en) * | 2002-05-21 | 2003-11-28 | (주)퓨전테크 | The way of pointing faults on a buried cable |
| KR100493244B1 (en) * | 2002-01-25 | 2005-06-03 | 예명환 | Leakage detection and repair mathode for road lamp line |
| KR100676225B1 (en) * | 2006-04-28 | 2007-02-01 | 예명환 | Low voltage on-line cable monitering system |
| KR100861766B1 (en) * | 2007-03-29 | 2008-10-06 | (주)코브테크놀로지 | Band type Zero Current Transformer within a ground fault circuit alarm |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200468304Y1 (en) | 2011-07-22 | 2013-08-05 | 김기수 | Cable supporter for underground electric distribution |
-
1999
- 1999-01-29 KR KR1019990002808A patent/KR100315206B1/en not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100493244B1 (en) * | 2002-01-25 | 2005-06-03 | 예명환 | Leakage detection and repair mathode for road lamp line |
| KR20030090251A (en) * | 2002-05-21 | 2003-11-28 | (주)퓨전테크 | The way of pointing faults on a buried cable |
| KR100676225B1 (en) * | 2006-04-28 | 2007-02-01 | 예명환 | Low voltage on-line cable monitering system |
| KR100861766B1 (en) * | 2007-03-29 | 2008-10-06 | (주)코브테크놀로지 | Band type Zero Current Transformer within a ground fault circuit alarm |
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| Publication number | Publication date |
|---|---|
| KR100315206B1 (en) | 2001-11-26 |
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