KR200439071Y1 - Fixation structure of zerophase current transformer - Google Patents

Fixation structure of zerophase current transformer Download PDF

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Publication number
KR200439071Y1
KR200439071Y1 KR2020070001779U KR20070001779U KR200439071Y1 KR 200439071 Y1 KR200439071 Y1 KR 200439071Y1 KR 2020070001779 U KR2020070001779 U KR 2020070001779U KR 20070001779 U KR20070001779 U KR 20070001779U KR 200439071 Y1 KR200439071 Y1 KR 200439071Y1
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South Korea
Prior art keywords
current transformer
busbar
image
cover member
image current
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KR2020070001779U
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Korean (ko)
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전민숙
홍정애
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전민숙
홍정애
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H01F38/30—Constructions
    • 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
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
    • H01H71/125—Automatic release mechanisms with or without manual release using a solid-state trip unit characterised by sensing elements, e.g. current transformers
    • 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
    • H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers

Abstract

본 고안은 단순구조로 영상변류기와 부스바를 일체화시켜 전체 부피를 콤팩트화시킬 수 있도록 그 구조가 개량된 영상변류기의 고정구조체에 관한 것이다.The present invention relates to a fixed structure of an image transformer having an improved structure so that the total volume can be compacted by integrating the image transformer and the busbar with a simple structure.

그 구조는 배선차단기의 출력단자측에 결합되며 배선차단기로부터 분배되는 전류를 전달하기 위한 부스바와, 그 부스바를 외측에서 감싸도록 일체로 결합되는 전도체인 코어와, 그 코어의 외측에 일체로 결합되어 부스바를 통해 나가는 전류의 이상 상태를 검출하는 영상변류기와, 그 영상변류기의 일측 부위와 절연체를 매개로 일체 결합되는 커버부재를 구비한 것이다.The structure is coupled to the output terminal side of the circuit breaker, the busbar for delivering the current distributed from the circuit breaker, the core which is integrally coupled to surround the busbar from the outside, and integrally coupled to the outside of the core An image current transformer for detecting an abnormal state of the current flowing through the busbar, and a cover member integrally coupled to one side portion of the image current transformer through an insulator.

이에 따르면 본 고안은 부스바가 영상변류기를 관통하도록 일체로 결합되고 절연체를 매개로 커버부재와 일체로 결합되는 구조를 가짐으로써, 전체 부피를 콤팩트화할 수 있으면서 절연 안전성을 향상시키는 유용한 효과를 갖는다. According to the present invention, the busbar has a structure in which the busbar is integrally coupled to the image current transformer and integrally coupled with the cover member through the insulator, so that the overall volume can be made compact and the insulation safety is improved.

Description

영상변류기의 고정구조체{Fixation structure of zerophase current transformer}Fixation structure of zero-phase current transformer

도 1은 본 고안에 따른 영상변류기의 고정구조체를 나타낸 사시도.1 is a perspective view showing a fixing structure of the image transformer according to the present invention.

도 2는 본 고안의 정면도.2 is a front view of the present invention.

도 3은 본 고안 영상변류기의 고정구조체가 배선차단기와 결합된 상태를 나타낸 사용상태도.Figure 3 is a use state showing a state in which the fixed structure of the current transformer of the present invention is coupled to the circuit breaker.

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

10 : 부스바 12,14 : 요철부10: busbar 12, 14: uneven portion

20 : 코어 30 : 영상변류기20: core 30: current transformer

40 : 절연체 50 : 커버부재40: insulator 50: cover member

100 : 배선차단기 110 : (배선차단기의)출력단자100: wiring breaker 110: output terminal (of wiring breaker)

본 고안은 영상변류기의 고정구조체에 관한 것으로, 특히 수배전반에서 사용전압 600V 이하의 누전 발생시 이를 자동으로 검출하여 누전 경보기측으로 송신하는 영상변류기를 부스바와 절연체로 이용한 몰딩 처리로 일체화하여 부피를 콤팩트 화함과 아울러, 안전성이 향상되도록 그 구조가 개량된 영상변류기의 고정구조체에 관한 것이다.The present invention relates to a fixed structure of the video current transformer, in particular, when the leakage current of less than the operating voltage of 600V in the switchgear is automatically compacted and integrated into the molding process using the busbar and the insulator, the video current transformer that transmits to the earth leakage alarm side to compact the volume and In addition, the present invention relates to a fixed structure of an image current transformer whose structure is improved to improve safety.

일반적으로, 영상변류기는 누설전류 즉, 이상전류가 발생하는 경우, 영상전류를 검출하여 차단기를 동작시켜 회로를 차단하고, 전기를 끊어 위험 사고를 줄이는 기능을 갖는 것으로, 전원에서 부하측으로 통하는 전로를 영상변류기에 관통시켜 놓으면 회로가 정상인 경우에는 영상변류기에 발생한 자속은 서로 상쇄되어 전류는 발생하지 않으나, 회로에 누전 또는 감전등이 발생하면 영상변류기의 철심에는 누전 전류에 의한 강한 자속이 발생되어 2차 권선에 전압이 유도되어 전로의 개폐기구를 동작시키게 되는 것이다.In general, the video current transformer has a function of detecting a video current to operate a circuit breaker to cut off a circuit and cut off electricity to reduce a risk accident when a leakage current, that is, an abnormal current, occurs. If the circuit is normal, the magnetic flux generated in the image current transformer cancels each other and the current does not occur.However, if a short circuit or electric shock occurs in the circuit, strong magnetic flux due to the current leakage occurs in the core of the current transformer. Voltage is induced in the secondary winding to operate the switchgear of the converter.

이러한 영상변류기는 통상적으로 에나멜 코팅된 코일을 환형의 자심에 권선하여 권선된 코일의 양끝단을 경보기의 개폐기구로 연결하여 개폐기구를 동작시킴으로서 위험 사고를 줄일 수 있게 되는 것이다.Such image current transformers typically reduce the risk of accidents by winding an enamel coated coil around an annular magnetic core and connecting both ends of the wound coil to an opening and closing mechanism of an alarm to operate the opening and closing mechanism.

따라서, 전기위험사고를 줄이는데 있어 아주 중요한 영상 변류기는 코일을 권선한 권선코어를 금속재 케이스로 케이싱하거나 또는 합성수지재 케이스로 케이싱하게 되는데, 금속재의 케이싱을 할 경우에는 누전경보기 내에서 발생되는 자속 및 전기적 간섭을 최소화하여 측정정도를 높일 수 있는 장점이 있으며, 합성수재로케이싱을 할 경우에는 절연효과가 크고 안전성면에서 우수한 이점이 있으므로, 업계에서는 금속재 또는 합성수지재 중의 어느 하나를 선택하여 케이스를 제작하여 사용하게 되었다.Therefore, the video current transformer, which is very important in reducing the electrical hazards, is casing the winding core wound the coil with a metal case or a synthetic resin case. In the case of the metal casing, the magnetic flux and electrical generated in the ground fault alarm It has the advantage of improving the measurement accuracy by minimizing the interference.In case of casing with synthetic resin, the insulation effect is large and the safety advantage is excellent. In the industry, the case is selected by selecting either metal or synthetic resin. It was used.

그런데, 이러한 금속재 또는 합성수지재 케이스는 현행 소방법 시행령에서 규정하는 바에 의하면, 금속재의 경우 두께 1mm 이상으로 제작하도록 규정하고, 합성수지재의 경우 두께 2.5mm 이상으로 제작하도록 규정하고 있어, 이러한 규정에 따라 제작되어질 경우 금속재 만으로 제작되어진 케이스를 사용하면 항상 쇼트의 위험이 존재하게 되고, 합성수지재 만으로 케이스를 제작하는 경우에는 최소한의 두게를 2.5mm 이상으로 제작해야 하므로, 케이스의 두께가 상당하여 그 크기 와 부피 또한, 커지게 됨으로서 소형화 추세에 있는 배선용 차단기나, 또는 누전차단기의 내부에 설치하기 어려운 문제점이 있었다.However, the case of the metal or synthetic resin case is prescribed by the Enforcement Decree of the current fire law, it is specified that the metal material to be made more than 1mm thick, and the synthetic resin material to be made to be more than 2.5mm thickness, it is to be manufactured in accordance with these regulations In case of using case made of metal only, there is always a risk of short. When making case of synthetic resin only, the minimum thickness should be made more than 2.5mm. As it becomes larger, there has been a problem that it is difficult to install inside a circuit breaker or an earth leakage circuit breaker which is miniaturized.

따라서, 배선용 차단기나, 또는 누전차단기에 근접되게 설치할 수 있도록 영상변류기의 크기를 작게 형성하면서도, 항상 전기적 쇼트 및 자속에 의한 간섭 등을 받지 않도록 하는 영상변류기를 필요로 하였다.Accordingly, an image current transformer is required in which the size of the image current transformer is made small so that the circuit breaker or the circuit breaker can be installed close to the circuit breaker.

본 고안은 상기한 제반 문제점을 감안하여 이를 해결하고자 제안된 것으로, 그 목적은 단순 구조로 전기적 절연구조체를 구성함과 아울러, 구조를 콤팩트화시켜 부피를 축소시킬 수 있도록 그 구조가 개량된 영상변류기의 고정구조체를 제공하는 데 있다.The present invention has been proposed to solve the above problems in view of the above problems, and its purpose is to construct an electrical insulation structure with a simple structure, and to improve the structure of the current transformer to reduce its volume by compacting the structure. It is to provide a fixed structure of.

상기한 목적을 달성하기 위한 본 고안은 배선 차단기로부터 분배되는 전원을 전달하는 터미널인 부스바와,The present invention for achieving the above object is a busbar that is a terminal for transmitting the power distributed from the wire breaker,

상기 부스바의 외주면 일부를 감싸는 전도체인 코어를 매개로 일체 결합되며 경계전로의 누전전류를 검출하기 위한 영상변류기와,An image current transformer for integrally coupling a core, which is a conductor surrounding a part of an outer circumferential surface of the busbar, to detect a leakage current of a boundary converter;

상기 영상변류기의 일측부와 절연체를 매개로 일체 결합되는 커버부재를 구비하는 것을 특징으로 한다.And a cover member integrally coupled to one side of the image current transformer through an insulator.

본 고안의 절연체는 커버부재와 영상변류기 사이에 개재되도록 마련되어 상기 커버부재와 영상변류기를 이격 및 절연시키는 것이 바람직하다.The insulator of the present invention is provided so as to be interposed between the cover member and the image transformer to separate and insulate the cover member and the image transformer.

또, 상기 부스바들중 적어도 하나에 요부와 철부로 이루어진 요철부가 형성된 것이다.In addition, at least one of the busbars is formed with an uneven portion consisting of a recessed portion and an iron portion.

이하, 본 고안의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 고안에 따른 영상변류기의 고정구조체는, 도 1 내지 도 3을 참조하여 설명하면, 그 구조는 배선차단기(100)의 출력단자(110)측에 결합되며 배선차단기(100)로부터 분배되는 전류를 전달하기 위한 부스바(10)(bus bar)와, 그 부스바(10)를 외측에서 감싸도록 일체로 결합되는 전도체인 코어(20)와, 그 코어(20)의 외측에 일체로 결합되어 부스바(10)를 통해 나가는 전류의 이상 상태를 검출하는 영상변류기(30)와, 그 영상변류기(30)의 일측 부위와 절연체(40)를 매개로 일체 결합되는 커버부재(50)를 구비한 것이다.The fixed structure of the video current transformer according to the present invention, described with reference to Figures 1 to 3, the structure is coupled to the output terminal 110 side of the circuit breaker 100 and the current distributed from the circuit breaker 100 A bus bar 10 for transmitting, a core 20 that is a conductor that is integrally coupled to surround the bus bar 10 from the outside, and a bus bar that is integrally coupled to the outside of the core 20 The current transformer 30 detects an abnormal state of the current flowing out through the bar 10, and a cover member 50 integrally coupled to one side portion of the image current transformer 30 through the insulator 40. .

더 상세히 설명하면, 그 영상변류기(30)의 내부로 부스바(10)가 관통되도록 결합되고, 그 영상변류기(30)와 부스바(10) 사이에는 전도체인 코어(20)가 채워지도록 일체로 결합되며, 그 코어(20)가 영상변류기(30)와 부스바(10)를 일체로 결합시키는 구조로 되어 있다.In more detail, the busbar 10 is coupled to the inside of the current transformer 30, and the core 20, which is a conductor, is integrally formed between the current transformer 30 and the busbar 10. The core 20 is coupled to the video current transformer 30 and the busbar 10 integrally.

그 커버부재(50)와 영상변류기(30) 사이에는 절연체(40)가 개재되도록 마련 되며, 그 절연체(40)는 영상변류기(30)와 커버부재(50)를 이격시킴과 아울러, 절연 처리로 안전성을 부여하도록 되어 있다.An insulator 40 is interposed between the cover member 50 and the image current transformer 30, and the insulator 40 separates the image current transformer 30 and the cover member 50 and insulates the insulation. It is supposed to give safety.

또, 그 커버부재(50)의 전면 중앙에는 작업자가 커버부재(50)를 파지할 수 있도록 손잡이(55)가 돌출 형성된 구조를 갖는 것이 바람직하다.In addition, it is preferable to have a structure in which the handle 55 protrudes from the front center of the cover member 50 so that an operator can hold the cover member 50.

그리고, 각각의 부스바(10)들중 중앙의 것과 양 외측에 위치한 것이 서로 다른 구조로 형성되어 있으며, 그 외측의 부스바(10)는 코어(20)와 결합되는 일부위가 홈이나 돌기 형태의 요부와 철부로 이루어진 요철부(12)(14)가 형성되어 있다. 이는, 영상변류기(30)와 코어(20)와의 결합시 코어(20)와의 결합을 위한 공간을 마련하기 위한 것이다.In addition, each of the busbars 10 is located in the center and the outer side of each other is formed in a different structure, the busbars 10 of the outer portion is coupled to the core 20 in the groove or protrusion form The concave and convex portions 12 and 14 formed of concave portions are formed. This is to provide a space for coupling with the core 20 when the image transformer 30 and the core 20 are coupled to each other.

이러한 구성을 갖는 본 고안의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention having such a configuration as follows.

본 고안 영상변류기의 고정구조체는, 배선 차단기의 2차측 출력단자(110)측과 부스바(10)의 일단부들을 일체로 체결시킨 후에 그 부스바(10)의 타단부들을 전류를 공급하고자 하는 부위(외부 입력측 단자)와 터미널 연결시키면, 외부 전류가 수배전반(미도시됨)의 메인 차단기를 통해 각 배선 차단기를 거쳐 가정이나 산업 현장으로 분배되는 경로중에 배선 차단기의 출력단자(110)와 외부 입력측 단자 사이에 영상변류기(30)와 부스바(10)가 위치하게 된다.The fixed structure of the current transformer according to the present invention is intended to supply current to the other ends of the busbars 10 after the secondary output terminal 110 side of the circuit breaker is integrally fastened with one end of the busbars 10. When the terminal is connected to a part (external input side terminal), the output terminal 110 and the external input side of the wiring breaker are routed in a path where external current is distributed to the home or industrial site through each wiring breaker through the main breaker of the distribution panel (not shown). The video current transformer 30 and the busbar 10 are positioned between the terminals.

그 터미널 연결된 부스바(10)를 통해 배선차단기(100)의 전류가 외부로 전달되는 과정에서 영상변류기(30)가 코어(20)를 통해 부스바(10)의 통전 전류들중 누전전류(이상발생)를 검출하는 것으로, 이상 발생시 누전경보기(미도시됨)측으로 송신하여 사용전류를 단락시킬 수 있게 된다.In the process of transmitting the current of the circuit breaker 100 to the outside through the bus bar 10 connected to the terminal, the current transformer 30 is a current leakage current among the currents of the bus bar 10 passing through the core 20. Generation), and when an abnormality occurs, it is transmitted to the ground fault alarm (not shown) to short-circuit the used current.

이때, 커버부재(50)와 영상변류기(30)는 절연체(40)에 의해 이격 및 절연 처리되어 있으므로, 작업자가 영상변류기(30)와 부스바(10)의 결합시 커버부재(50)를 파지한 상태로 배선차단기(100)의 출력단자(110)측과 외부 입력측 단자 사이에 위치하도록 부스바(10)를 일체로 결합시킬 수 있다.At this time, since the cover member 50 and the image current transformer 30 are separated and insulated by the insulator 40, the worker grips the cover member 50 when the image current transformer 30 and the busbar 10 are coupled to each other. In one state, the busbars 10 may be integrally coupled to be positioned between the output terminal 110 side and the external input side terminal of the circuit breaker 100.

따라서, 본 고안은 부스바(10)와 영상변류기(30)가 일체화되어 보다 콤팩트화됨과 아울러, 절연 안전성을 향상시킬 수 있게 된다.Therefore, the present invention can be further compacted by the busbar 10 and the image current transformer 30 is integrated, it is possible to improve the insulation safety.

이상과 같이 설명한 본 고안은 단순구조로 영상변류기와 부스바를 일체화시켜 전체 부피를 콤팩트화시킬 수 있도록 그 구조가 개량된 것인 바, 이에 따르면 본 고안은 부스바가 영상변류기를 관통하도록 일체로 결합되고 절연체를 매개로 커버부재와 일체로 결합되는 구조를 가짐으로써, 전체 부피를 콤팩트화할 수 있으면서 절연 안전성을 향상시키는 유용한 효과를 갖는다.As described above, the present invention has a simple structure, and the structure is improved to integrate the current transformer and the busbars to compact the overall volume. Accordingly, the present invention is integrally coupled to allow the busbars to pass through the current transformers. By having a structure that is integrally coupled with the cover member via an insulator, the overall volume can be made compact and has a useful effect of improving insulation safety.

Claims (3)

배선 차단기로부터 분배되는 전원을 전달하는 터미널인 복수개의 부스바와,A plurality of busbars that are terminals for transmitting power distributed from the circuit breaker, 상기 부스바의 외주면 일부를 감싸는 전도체인 코어를 매개로 일체 결합되며 경계전로의 누전전류를 검출하기 위한 영상변류기와,An image current transformer for integrally coupling a core, which is a conductor surrounding a part of an outer circumferential surface of the busbar, to detect a leakage current of a boundary converter; 상기 영상변류기의 일측부와 절연체를 매개로 일체 결합되는 커버부재를 구비하는 것을 특징으로 하는 영상변류기의 고정구조체.And a cover member integrally coupled to one side of the image current transformer through an insulator. 청구항 1에 있어서,The method according to claim 1, 상기 절연체는 커버부재와 영상변류기 사이에 개재되도록 마련되어 상기 커버부재와 영상변류기를 이격 및 절연시키는 것을 특징으로 하는 영상변류기의 고정구조체.The insulator is provided to be interposed between the cover member and the image current transformer is fixed structure of the image current transformer, characterized in that for separating and insulating the cover member and the image current transformer. 청구항 1 또는 청구항 2에 있어서,The method according to claim 1 or 2, 상기 부스바들중 적어도 하나에 요부와 철부로 이루어진 요철부가 형성된 것을 특징으로 하는 영상변류기의 고정구조체.At least one of the busbars fixed structure of the image current transformer, characterized in that the concave-convex portion consisting of a concave portion and the convex portion.
KR2020070001779U 2007-01-31 2007-01-31 Fixation structure of zerophase current transformer KR200439071Y1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101076292B1 (en) 2011-02-07 2011-10-26 주식회사 대륙 The molded case circuit breaker
KR101657044B1 (en) * 2016-07-28 2016-09-19 (주)서전기전 A breaker intergrated zct and low-voltage distributing board having it

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101076292B1 (en) 2011-02-07 2011-10-26 주식회사 대륙 The molded case circuit breaker
KR101657044B1 (en) * 2016-07-28 2016-09-19 (주)서전기전 A breaker intergrated zct and low-voltage distributing board having it

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