KR20090118298A - Clamp-type current sensor with a rogowski coil - Google Patents

Clamp-type current sensor with a rogowski coil Download PDF

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KR20090118298A
KR20090118298A KR1020080044003A KR20080044003A KR20090118298A KR 20090118298 A KR20090118298 A KR 20090118298A KR 1020080044003 A KR1020080044003 A KR 1020080044003A KR 20080044003 A KR20080044003 A KR 20080044003A KR 20090118298 A KR20090118298 A KR 20090118298A
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South Korea
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coil
current sensor
logo
type current
conductor
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KR1020080044003A
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Korean (ko)
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KR100965818B1 (en
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조원장
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태화트랜스 주식회사
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Priority to KR1020080044003A priority Critical patent/KR100965818B1/en
Priority to PCT/KR2008/004294 priority patent/WO2009139521A1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/04—Housings; Supporting members; Arrangements of terminals
    • 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
    • G01R15/181—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using coils without a magnetic core, e.g. Rogowski coils
    • 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
    • G01R15/186—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using current transformers with a core consisting of two or more parts, e.g. clamp-on type
    • 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
    • G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

PURPOSE: A clamp type current sensor with a Rogowski coil is provided to be easily separated from a conductor in which a current is flowed by mounting a soft Rogowski coil inside a housing. CONSTITUTION: A Rogowski coil(10) is formed by winding a coil in a flexible air core. One end of a first housing member(21) is connected to one end of a second housing member through a hinge part. A coupling part(27) is formed in the other ends of the first housing member and the second housing member. A shielding cover(30) is coupled in a top end of the first housing member and the second housing member. The Rogowski coil is inserted inside a protecting tube. A connector(40) is coupled in one end part of the Rogowski coil.

Description

로고스키코일을 구비하는 분할클램프식 전류센서{CLAMP-TYPE CURRENT SENSOR WITH A ROGOWSKI COIL}Split clamp type current sensor with Rogo ski coil {CLAMP-TYPE CURRENT SENSOR WITH A ROGOWSKI COIL}

본 발명은 로고스키코일(Rogowski coil)을 구비하는 전류센서에 관한 것으로, 이다.The present invention relates to a current sensor having a Rogowski coil.

종래에는 배전반 및 각종 고압 스위치 기어 등의 전력기기에 있어서 부하전류 및 사고전류를 측정하는 수단으로서 자성체 코일을 사용하는 전류변환기(current transformer; CT)가 사용되어 왔으나 소형화가 어려운 등 적용상 많은 문제점이 있어, 최근 들어 로고스키코일을 이용한 전류센서가 많이 이용되고 있다.Conventionally, current transformers (CTs) using magnetic coils have been used as means for measuring load currents and fault currents in power devices such as switchboards and various high voltage switch gears. Recently, many current sensors using Rogowski coils have been used.

로고스키코일은 일반 전류변환기와 달리 마그네틱코어(magnetic core)를 사용하지 않고 공심코어(air core)를 형성하는 특수 재질의 플라스틱 보빈을 사용하여 여자시키는 것으로, 공심코어 내를 관통하는 도체에 전류가 흐를 경우 이 전류에 의해 공심코어에 권취된 코일에 도체의 전류에 비례하는 전압이 유도됨에 따라 이를 토대로 도체에 흐르는 전류의 크기를 검출해 내는 구조를 가진다.Rogowski coils are excited by using a plastic bobbin made of a special material that forms an air core instead of a magnetic core, unlike a general current converter. If it flows, a voltage proportional to the current of the conductor is induced in the coil wound around the core core by the current, and based on this, the current flows through the conductor.

로고스키코일은 철심포화에 따른 과전류 손상이 없는 특성을 가짐에 따라 일반적으로 기중차단기, 가스절연부하개폐기 등과 같은 고압의 전류가 흐르는 장치들에도 효과적으로 적용되고 있다.Rogowski coil has the characteristics that there is no over-current damage due to iron core saturation, it is generally effectively applied to high-voltage current flowing devices such as air circuit breaker, gas insulated load switch.

도 1에는 종래기술에 따른 로고스키코일을 구비하는 전류센서(100)의 분해사시도가 도시된다.1 is an exploded perspective view of a current sensor 100 having a logo ski coil according to the prior art.

종래기술에 따른 로고스키코일을 구비하는 전류센서(100)는 도 1에 도시되는 바와 같이, 피측정전류가 흐르는 도체(도시되지 않음)가 관통가능한 링 형상의 공심코어(111)에 코일(113)이 권선되어 형성되는 로고스키코일(110)과, 피측정전류가 흐르는 도체(도시되지 않음)가 관통가능하도록 링 형상으로 형성되고 코일(113)의 연결단부(113a)를 제외한 로고스키코일(110)을 수용하는 하우징(120)과, 하우징(120) 내에 수용된 로고스키코일(110)을 밀폐시키는 에폭시몰딩(130)을 포함하여 이루어진다.As shown in FIG. 1, the current sensor 100 having a logo ski coil according to the related art has a coil 113 in a ring-shaped concentric core 111 through which a conductor (not shown) through which a current to be measured flows is passed. Rogoski coil (110), which is formed by winding) and a conductor (not shown) through which a current to be measured flows, is formed in a ring shape, and the Rogoski coil (except for the connecting end 113a of the coil 113) It comprises a housing 120 for receiving the 110, and the epoxy molding 130 for sealing the Rogo ski coil 110 accommodated in the housing 120.

그러나 종래기술에 따른 로고스키코일을 구비하는 전류센서(100)의 경우에는 전체적으로 개폐가 불가능한 링 형상으로 형성됨에 따라 피측정전류가 흐르는 도체 상으로 설치하거나 해체하는 것이 용이하지 않은 문제점이 있었다.However, in the case of the current sensor 100 having a Rogowski coil according to the prior art, there is a problem in that it is not easy to install or dismantle onto a conductor through which a current to be measured flows as it is formed as a ring shape that cannot be opened and closed as a whole.

또한 로고스키코일(110)이 단지 공심코어(111)에 코일(113)이 권선된 형태로 형성됨에 따라 공심코어(110)와 코일(111) 사이의 커패시턴스로 인한 노이즈나 코일(113)과 코일 사이의 커패시턴스로 인한 노이즈가 발생되며 외부자계에 의해 코일(113)이 영향을 받는 문제점이 있었다.In addition, since the logo ski coil 110 is formed in a form in which the coil 113 is wound around the core core 111, the noise or the coil 113 and the coil due to the capacitance between the core core 110 and the coil 111 are coiled. Noise is generated due to capacitance between the coil 113 is affected by the external magnetic field.

본 발명의 목적은, 피측정전류가 흐르는 도체 상으로 용이하게 설치될 수 있고 용이하게 해체될 수 있도록 한 로고스키코일을 구비하는 분할클램프식 전류센서를 제공하기 위한 것이다.An object of the present invention is to provide a split clamp type current sensor having a logo ski coil which can be easily installed and easily dismantled on a conductor through which a current to be measured flows.

본 발명의 다른 목적은 공심코어와 코일 사이의 커패시턴스로 인한 노이즈, 코일과 코일 사이의 커패시턴스로 인한 노이즈 및 외부자계에 의한 코일의 영향을 최소화시킴에 따라 더욱 정밀한 전류 모니터링을 가능하게 한 로고스키코일을 구비하는 분할클램프식 전류센서를 제공하기 위한 것이다.Another object of the present invention is to minimize the noise caused by the capacitance between the core core and the coil, the noise caused by the capacitance between the coil and the coil, and the effect of the coil by the external magnetic field, thereby enabling more precise current monitoring. It is to provide a split clamp type current sensor having a.

전술한 본 발명의 목적은, 피측정전류가 흐르는 도체의 둘레에 설치되어 상기 도체에 흐르는 전류를 검출하는 로고스키코일을 포함하는 전류센서에 있어서, 플렉서블 공심코어에 코일이 권선되어 형성되는 로고스키코일과, 반원 형상의 제 1 및 제 2 하우징부재의 일단이 힌지부에 의해 연결되어 개폐가능하게 형성되고 그 내부에는 상기 로고스키코일이 수용되며 상기 제 1 및 제 2 하우징부재의 타단에는 링 형상이 유지되도록 하는 결합부가 각각 형성되는 개폐식하우징과, 상기 제 1 및 제 2 하우징부재의 개방 상단에 결합되는 차폐커버를 포함하여 이루어지는 로고스키코일을 포함하는 분할클램프식 전류센서를 제공함에 의해 달성된다.An object of the present invention described above is a Rogo-Ski formed by winding a coil around a flexible core core in a current sensor including a Rogo-Ski coil installed around a conductor through which a current to be measured flows and detecting a current flowing through the conductor. One end of the coil and the semicircular first and second housing members are connected to each other by a hinge portion to be opened and closed, and the Rogowski coil is accommodated therein, and the other end of the first and second housing members has a ring shape. This is achieved by providing a split-clamp type current sensor comprising an openable housing each having a coupling portion to be maintained, and a logo ski coil comprising a shielding cover coupled to an open upper end of the first and second housing members. .

본 발명의 바람직한 특징에 따르면, 상기 로고스키코일은 코일의 권선 후 코 일의 끝단부를 공심코어를 관통시켜 코일의 시작단부와 나란히 위치시킨 후 중립단자에 연결시키고 그 외주면을 차폐케이블로 감쌈에 따라 형성된다.According to a preferred feature of the present invention, the Rogosky coil is located after the coil is wound through the end of the coil through the co-core core side by side with the starting end of the coil connected to the neutral terminal and the outer peripheral surface of the shielded cable as Is formed.

본 발명의 더 바람직한 특징에 따르면, 상기 차폐케이블로 감싸진 로고스키코일은 보호튜브 내에 삽입된다.According to a more preferred feature of the invention, the logo ski coil wrapped with the shielding cable is inserted into the protective tube.

본 발명의 더욱 바람직한 특징에 따르면, 상기 제 1 또는 제 2 하우징부재의 일측으로 돌출되게 형성되고 상기 로고스키코일의 코일단부가 결합되는 커넥터를 더 포함하여 이루어진다.According to a more preferable feature of the present invention, it further comprises a connector which is formed to protrude to one side of the first or second housing member and the coil end of the Rogowski coil.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 결합부에 의해 링을 형성하는 상기 제 1 및 제 2 하우징부재의 내주면에 각각 결합되어 상기 도체에 안정적으로 설치되도록 하는 쿠션부재를 더 포함하여 이루어진다.According to an even more preferable feature of the present invention, it further comprises a cushion member coupled to the inner circumferential surface of the first and second housing member forming a ring by the coupling portion to be stably installed on the conductor.

본 발명에 따른 로고스키코일을 구비하는 클램프식 전류센서에 의하면, 링 형상의 개폐식하우징 내에 유연한 로고스키코일이 내장됨에 따라 피측정전류가 흐르는 도체 상으로 용이하게 설치될 수 있고 피측정전류가 흐르는 도체로부터 용이하게 해체될 수 있는 탁월한 효과가 있다.According to the clamp-type current sensor provided with a logo ski coil according to the present invention, the flexible logo ski coil is embedded in a ring-shaped opening and closing housing can be easily installed onto a conductor through which the current under measurement flows and the current under measurement flows. There is an excellent effect that can be easily dismantled from the conductor.

또한 로고스키코일의 그 제조시 코일의 권선 후 코일의 끝단부를 플렉서블 공심코어를 관통시켜 코일의 시작단부와 나란히 위치시킨 후 중립단자에 연결하고 그 외주면을 차폐케이블로 감쌈에 따라, 플렉서블 공심코어와 코일 사이의 커패시턴스로 인한 노이즈, 코일과 코일 사이의 커패시턴스로 인한 노이즈 및 외부자계에 의한 코일의 영향을 최소화시켜 더욱 정밀한 전류 모니터링이 가능한 효과가 있다.In the manufacture of Rogowski coils, after winding of the coil, the end of the coil passes through the core of the flexible core and is positioned side by side with the beginning of the coil.Then, it is connected to the neutral terminal and the outer circumferential surface is wrapped with a shielding cable. Noise due to capacitance between coils, noise due to capacitance between coils and coils, and effects of coils due to external magnetic fields can be minimized to enable more accurate current monitoring.

이하에는, 본 발명의 바람직한 실시예를 첨부도면을 참조하여 상세하게 설명하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are intended to describe in detail enough to be easily carried out by those skilled in the art to which the present invention pertains. This does not mean that the technical spirit and scope of the present invention is limited.

도 2에는 본 발명에 따른 로고스키코일을 구비하는 클램프식 전류센서의 사시도가 도시되고, 도 3에는 본 발명에 따른 로고스키코일을 구비하는 클램프식 전류센서의 분해사시도가 도시되며, 도 4에는 본 발명에 따른 로고스키코일을 구비하는 클램프식 전류센서에 있어서, 로고스키코일의 단면구조도가 도시되고, 도 5a 내지 도 5i에는 본 발명에 따른 로고스키코일을 구비하는 클램프식 전류센서의 제조공정도가 도시된다.2 is a perspective view of a clamp type current sensor having a logo ski coil according to the present invention, Figure 3 is an exploded perspective view of a clamp type current sensor having a logo ski coil according to the present invention, Figure 4 In the clamp type current sensor having a logo skicoil according to the present invention, a cross-sectional structural view of the logo ski coil is shown, and FIGS. 5A to 5I show a manufacturing process of a clamp type current sensor having a logo ski coil according to the present invention. Is shown.

본 발명에 따른 로고스키코일을 구비하는 클램프식 전류센서(1)는, 피측정전류가 흐르는 도체(도시되지 않음) 상으로의 설치 및 해체가 용이하게 이루어질 수 있으며, 플렉서블 공심코어(11)와 코일(13) 사이, 코일(13)과 코일(13) 사이의 커패시턴스로 인한 노이즈 및 외부자계에 의한 코일(13)의 영향을 최소화시킴에 따라 더욱 정밀한 전류 모니터링을 가능하게 하게 하기 위한 것으로, 도 2 내지 도 5i에 도시되는 바와 같이, 플렉서블 공심코어(11)에 코일(13)이 권선되어 형성되는 로고 스키코일(10)과, 반원 형상의 제 1 및 제 2 하우징부재(21, 23)의 일단이 힌지부(25)에 의해 연결되어 개폐가능하게 형성되고 그 내부에는 로고스키코일(10)이 수용되며 제 1 및 제 2 하우징부재(21, 23)의 타단에는 링 형상이 유지되도록 하는 결합부(27)가 각각 형성되는 개폐식하우징(20)과, 제 1 및 제 2 하우징부재(21, 23)의 개방 상단에 결합되는 차폐커버(30)를 포함하여 이루어진다.Clamp-type current sensor 1 having a Rogowski coil according to the present invention, can be easily installed and dismantled on the conductor (not shown) through which the current to be measured flows, the flexible core core 11 and To minimize the influence of noise due to capacitance between the coil 13, between the coil 13 and the coil 13 and the influence of the coil 13 by the external magnetic field to enable more accurate current monitoring, FIG. As shown in FIGS. 2 to 5I, the logo ski coil 10 formed by winding the coil 13 around the flexible concentric core 11 and the semi-circular first and second housing members 21 and 23 are formed. One end is connected by the hinge portion 25 is formed to be opened and closed, the logo ski coil 10 is accommodated therein, the other end of the first and second housing members (21, 23) the coupling to maintain the ring shape Opening and closing how each part 27 is formed It comprises a shielding cover 30 is coupled to the open upper end of 20 and the first and second housing members (21, 23).

여기서, 로고스키코일(10)은 도체(도시되지 않음)에 피측정전류가 흐를 경우에 그 피측정전류에 의해 코일(13)에 유도되는 유도전압을 이용하여 도체에 흐르는 전류를 측정하는 것으로, 일정 길이를 가지는 플렉서블 공심코어(11)에 코일(13)이 권선되어 형성된다.Here, the Rogowski coil 10 measures the current flowing through the conductor by using an induced voltage induced in the coil 13 by the measured current when the current under flow flows through the conductor (not shown). The coil 13 is wound around the flexible core core 11 having a predetermined length.

로고스키코일(10)에 적용되는 코어로는 플렉서블 공심코어(11)가 바람직한데, 이는 차후에 설명될 개폐식하우징(20)의 개폐에 따라 유동될 수 있도록 유연 재질로 형성되는 것이 바람직하며, 이러한 플렉서블 공심코어(11)는 금속재질이 아니라 합성수지 또는 고무 재질로 된 튜브 형상으로 형성됨에 따라 철심코어에서와 같은 철심포화현상이 없어 고전류 측정을 가능한 것이 바람직하다.The core applied to the Rogowski coil 10 is preferably a flexible core core 11, which is preferably formed of a flexible material so that it can be flowed in accordance with the opening and closing of the openable housing 20, which will be described later. Since the core core 11 is formed of a tube shape made of synthetic resin or rubber instead of a metal material, it is preferable that there is no iron core saturation as in the iron core core, so that high current measurement is possible.

또한 로고스키코일(10)은 그 제조시 코일(13)의 권선 후 코일(13)의 끝단부를 플렉서블 공심코어(11)를 통해 관통시켜 코일의 시작단부와 나란히 위치시킨 후 중립단자(도시되지 않음)에 연결시키고 그 외주면을 외부자계에 의한 영향을 제거하기 위한 차폐케이블(15)로 감쌈에 따라, 플렉서블 공심코어(11)와 코일(13) 사이, 코일(13)과 코일(13) 사이의 커패시턴스로 인한 노이즈를 제거함과 동시에 코일(13)에 대한 외부자계의 영향을 최소화시키는 구조로 형성된다.In addition, the Rogo ski coil 10 is passed through the end of the coil 13 through the flexible concentric core 11 after the winding of the coil 13 at the time of the neutral terminal (not shown) placed side by side with the start end of the coil And the outer circumferential surface is wrapped with a shielding cable 15 to remove the influence of the external magnetic field, between the flexible core core 11 and the coil 13, between the coil 13 and the coil 13 The noise due to the capacitance is removed, and at the same time, the structure of the structure which minimizes the influence of the external magnetic field on the coil 13 is formed.

또한 차폐케이블(15)로 감싸진 로고스키코일(10)은 보호튜브(17) 내에 삽입되는 것이 바람직한데, 이 보호튜브(17)는 차폐케이블(15)로 감싸진 상태를 유지함과 동시에 로고스키코일(10)의 손상, 특히 차폐케이블(15)의 손상을 방지하는 역할을 한다.In addition, it is preferable that the logo ski coil 10 wrapped with the shielding cable 15 is inserted into the protection tube 17. The protection tube 17 is kept logo wrapped with the shield cable 15 and at the same time. It serves to prevent damage to the coil 10, in particular damage to the shielded cable (15).

전술한 로고스키코일(10)은 개폐식하우징(20) 내에 수용되어 피측정전류가 흐르는 도체 둘레에 설치되는데, 이 개폐식하우징(20)은 로고스키코일(10)이 내장되는 보호케이스를 형성함과 동시에, 도체에 대한 본 발명에 따른 로고스키코일을 구비하는 클램프식 전류센서(1)의 설치 및 해체를 용이하게 하기 위한 것으로, 서로 맞대어지는 반원 형상의 제 1 하우징부재(21)의 일단과 반원 형상의 제 2 하우징부재(23)의 일단이 힌지부(25)에 의해 연결되어 설치 및 해체시 개폐될 수 있는 구조로 형성된다.The above-mentioned logo ski coil 10 is accommodated in the retractable housing 20 and installed around the conductor through which the current to be measured flows. The retractable housing 20 forms a protective case in which the logo ski coil 10 is embedded. At the same time, to facilitate the installation and disassembly of the clamp-type current sensor 1 having the Rogowski coil according to the present invention with respect to the conductor, one end and the semicircle of the semi-circular first housing members 21 are opposed to each other. One end of the second housing member 23 of the shape is connected by the hinge portion 25 is formed in a structure that can be opened and closed during installation and dismantling.

개폐식하우징(20)은 그 내부에 로고스키코일(10)이 내장될 수 있도록, 힌지부(25)에 의해 연결되는 제 1 하우징부재(21)와 제 2 하우징부재(23)의 일단은 개방되고 로고스키코일(10)의 양단부가 각각 위치되는 타단은 폐쇄되는 함체형상으로 형성된다. 개폐식하우징(20)은 에폭시수지와 같은 합성수지로 사출성형되는 것이 바람직하다.The openable housing 20 has one end of the first housing member 21 and the second housing member 23 connected by the hinge portion 25 so that the logo ski coil 10 may be embedded therein. The other ends of the two ends of the logo ski coil 10 are formed in a closed shape. The openable housing 20 is preferably injection molded with a synthetic resin such as epoxy resin.

또한 제 1 하우징부재(21)와 제 2 하우징부재(23)의 타단에는 도체 상으로의 설치시 개폐식하우징(20)의 링 형상이 유지되도록 하는 결합부(27)가 형성되는데, 이 결합부(27)는 도시되는 바와 같이 제 1 하우징부재(21)와 제 2 하우징부재(23)의 타단에 각각 형성되고 서로 연통가능한 제 1 및 제 2 나사공(27a, 27b)과, 이 나사공들(27a, 27b)에 체결되는 체결나사로 형성될 수도 있고, 실시예에 따라서는 제 1 하우징부재(21)와 제 2 하우징부재(23)의 타단에 각각 형성되고 서로 착탈가능한 스냅결합구 또는 압입결합구로도 형성될 수 있다.In addition, the other end of the first housing member 21 and the second housing member 23 is formed with a coupling portion 27 to maintain the ring shape of the open and close housing 20 when installed on the conductor, this coupling portion ( 27, the first and second threaded holes 27a, 27b formed at the other ends of the first housing member 21 and the second housing member 23 and communicating with each other, and the screw holes ( 27a, 27b) may be formed as a fastening screw, and according to the exemplary embodiment, respectively, formed at the other ends of the first housing member 21 and the second housing member 23 and detachable from each other with a snap coupler or press-fit coupler. Can also be formed.

전술한 제 1 하우징부재(21) 및 제 2 하우징부재(23)의 개방 상단에는 차폐커버(30)가 결합되는데, 이 차폐커버(30)는 로고스키코일(10)이 내장된 개폐식하우징(20)의 개방 상단을 폐쇄시킴으로써 외부자계로부터 로고스키코일(10)을 차폐시키는 역할을 하는 것으로, 에폭시수지와 같은 합성수지로 사출성형되어 제 1 하우징부재(21)와 제 2 하우징부재(23)의 개방상단에 일체로 결합되는 것이 바람직하다.The shielding cover 30 is coupled to an open upper end of the first housing member 21 and the second housing member 23 described above, and the shielding cover 30 is an open / closed housing 20 having a logo ski coil 10 therein. ) To close the logo ski coil 10 from the external magnetic field by closing the open top of the), injection molded into a synthetic resin such as epoxy resin to open the first housing member 21 and the second housing member 23 It is preferable to be integrally coupled to the top.

또한 제 1 하우징부재(21) 및 제 2 하우징부재(23) 중 하나의 일측에는 커넥터(40)가 일측으로 돌출되게 형성되는데, 이 커넥터(40)는 로고스키코일(10)에 의해 측정된 전류신호를 송출하는 역할을 하는 것으로, 이 커넥터(40)에는 플렉서블 공심코어(11)에 권취된 코일(13)의 양단부가 결합된다. 커넥터(40)는 N자형 동축 케이블 커넥터로 형성되는 것이 바람직하다.In addition, the connector 40 is formed on one side of one of the first housing member 21 and the second housing member 23 to protrude to one side, the connector 40 is the current measured by the Rogowski coil (10) In order to transmit a signal, both ends of the coil 13 wound around the flexible core core 11 are coupled to the connector 40. The connector 40 is preferably formed of an N-shaped coaxial cable connector.

본 발명에 따른 로고스키코일을 구비하는 분할클램프식 전류센서(1)는 도체 상으로의 설치시 결합부(27)에 의해 링을 형성하는 제 1 하우징부재(21) 및 제 2 하우징부재(23)의 내주면에는 쿠션부재(50)가 각각 결합되는 것이 바람직하다.The split clamp type current sensor 1 having a logo ski coil according to the present invention has a first housing member 21 and a second housing member 23 that form a ring by a coupling part 27 when installed onto a conductor. It is preferable that the cushion members 50 are respectively coupled to the inner circumferential surface of the).

쿠션부재(50)는 그 내주면이 피측정전류가 흐르는 도체 상에 접하여 본 발명에 따른 로고스키코일을 구비하는 분할클램프식 전류센서(1)가 도체 둘레에 안정적으로 설치되도록 함과 동시에 외력에 의해 본 발명에 따른 로고스키코일을 구비하 는 분할클램프식 전류센서(1)와 도체 사이에 전달될 수 있는 충격을 완화시키는 역할을 하는 것으로, 반원형상의 고무, 실리콘, 우레탄 재질로 형성되는 것이 바람직하며, 제 1 하우징부재(21) 및 제 2 하우징부재(23)의 내주면에 접착 또는 융착된다.The cushion member 50 has its inner circumferential surface in contact with the conductor through which the current to be measured flows, so that the split clamp type current sensor 1 having the logo ski coil according to the present invention can be stably installed around the conductor and by external force. It serves to mitigate the shock that can be transmitted between the split clamp type current sensor 1 and the conductor having a logo ski coil according to the present invention, it is preferably formed of a semi-circular rubber, silicone, urethane material The inner peripheral surfaces of the first housing member 21 and the second housing member 23 are adhered or fused.

이하, 도 5a 내지 도 5i를 참조하여, 본 발명에 따른 로고스키코일을 구비하는 분할클램프식 전류센서(1)의 제조공정을 설명하면 다음과 같다:Hereinafter, referring to Figures 5a to 5i, the manufacturing process of the split clamp current sensor 1 having a logo ski coil according to the present invention will be described as follows:

우선 도 5a에 도시되는 바와 같이, 일정길이를 가지는 플렉서블 공심코어(11)에 코일(13)을 권선하고 그 끝단부를 플렉서블 공심코어(11)를 통해 관통시켜 시작단부와 나란히 위치시킨다.First, as shown in FIG. 5A, the coil 13 is wound around the flexible core core 11 having a predetermined length, and the end portion thereof is passed through the flexible core core 11 to be positioned side by side with the starting end.

그 다음에는 도 5b에 도시되는 바와 같이, 코일(13)의 외측면을 차폐케이블(15)로 감싼 후, 도 5c에 도시되는 바와 같이, 보호튜브(17) 내로 삽입하여 로고스키코일(10)의 제조를 완성한다.Next, as shown in FIG. 5B, the outer surface of the coil 13 is wrapped with the shielding cable 15, and then as shown in FIG. 5C, the logo ski coil 10 is inserted into the protective tube 17. Complete the manufacture of

그 다음에는 전술한 바와 같이 제조된 로고스키코일(10)을 도 5d에 도시되는 바와 같이, 일측이 개방된 개방된 개폐식하우징(20) 내에 내장시킨 후, 도 5e에 도시되는 바와 같이, 커넥터(40)에 결선한 다음, 도 5f 및 도 5g에 도시되는 바와 같이, 차폐커버(30)를 제 1 하우징부재(21) 및 제 2 하우징부재(23)의 개방상단에 일체로 결합시킨다.Next, as shown in FIG. 5D, the Rosko ski coil 10 manufactured as described above is embedded in the open / closed housing 20 having one side open, and as shown in FIG. 5E, the connector ( 40), the shield cover 30 is integrally coupled to the open top of the first housing member 21 and the second housing member 23, as shown in FIGS. 5F and 5G.

그 다음에는 피측정전류가 흐르는 도체(도시되지 않음) 일측이 개방된 개방된 개폐식하우징(20)을 끼워넣고 도 5h에 도시되는 바와 같이, 결합부(17)를 체결 고정하여 개폐식하우징(20)을 링 형상으로 고정하면 되고, 이 경우에는 도 5i에 도시되는 바와 같이, 쿠션부재(50)을 제 1 하우징부재(21) 및 제 2 하우징부재(23)의 내주면에 결합시켜 본 발명에 따른 로고스키코일을 구비하는 클램프식 전류센서(1)가 도체 둘레에 안정적으로 설치될 수 있도록 하는 것이 바람직하다.Next, insert an open and closed housing 20 in which one side of a conductor (not shown) through which a current to be measured flows is opened, and as shown in FIG. 5H, by fastening and coupling the coupling part 17 to the open and closed housing 20. In this case, as shown in FIG. 5I, the cushion member 50 is coupled to the inner circumferential surfaces of the first housing member 21 and the second housing member 23 so that the logo according to the present invention can be obtained. It is preferable that the clamp type current sensor 1 having a ski coil can be stably installed around the conductor.

전술한 공정에 의해 제조되는 본 발명에 따른 로고스키코일을 구비하는 클램프식 전류센서(1)를 사용할 경우에는, 링 형상의 개폐식하우징(20) 내에 유연한 로고스키코일(10)이 내장됨에 따라 피측정전류가 흐르는 도체 상으로 용이하게 설치될 수 있고 피측정전류가 흐르는 도체로부터 용이하게 해체될 수 있으며, 로고스키코일(10)의 그 제조시 코일(13)의 권선 후 코일(13)의 끝단부를 플렉서블 공심코어(11)를 관통시켜 코일(13)의 시작단부와 나란히 위치시킨 후 중립단자에 연결하고 그 외주면을 차폐케이블(17)로 감쌈에 따라, 플렉서블 공심코어(11)와 코일(13) 사이의 커패시턴스로 인한 노이즈, 코일(13)과 코일(13) 사이의 커패시턴스로 인한 노이즈 및 외부자계에 의한 코일(13)의 영향을 최소화시켜 더욱 정밀한 전류 모니터링이 가능해진다.In the case of using the clamp type current sensor 1 having the Rogowski coil according to the present invention manufactured by the above-described process, the flexible Rogowski coil 10 is built into the ring-shaped open / closed housing 20. It can be easily installed on the conductor through which the measurement current flows and can be easily dismantled from the conductor through which the current to be measured flows, and the end of the coil 13 after the winding of the coil 13 in its manufacture of Rogowski coil 10 The part is passed through the flexible concentric core 11 to be positioned side by side with the start end of the coil 13, and then connected to the neutral terminal, and the outer circumferential surface thereof is wrapped with the shielding cable 17, so that the flexible concentric core 11 and the coil 13 By minimizing the noise due to the capacitance between the), the noise due to the capacitance between the coil 13 and the coil 13 and the influence of the coil 13 by the external magnetic field, more accurate current monitoring is possible.

도 1은 종래기술에 따른 로고스키코일을 구비하는 전류센서의 분해사시도.1 is an exploded perspective view of a current sensor having a Rogowski coil according to the prior art;

도 2는 본 발명에 따른 로고스키코일을 구비하는 클램프식 전류센서의 사시도.Figure 2 is a perspective view of a clamp type current sensor having a Rogowski coil in accordance with the present invention.

도 3은 본 발명에 따른 로고스키코일을 구비하는 클램프식 전류센서의 분해사시도.Figure 3 is an exploded perspective view of a clamp type current sensor having a Rogowski coil in accordance with the present invention.

도 4는 본 발명에 따른 로고스키코일을 구비하는 클램프식 전류센서에 있어서, 로고스키코일의 단면구조도.Figure 4 is a clamp type current sensor having a logo skim coil according to the present invention, the cross-sectional structure of the logo skim coil.

도 5a 내지 도 5i는 본 발명에 따른 로고스키코일을 구비하는 클램프식 전류센서의 제조공정도.Figures 5a to 5i is a manufacturing process diagram of a clamp type current sensor having a Rogowski coil in accordance with the present invention.

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

1 : 본 발명에 따른 로고스키코일을 구비하는 클램프식 전류센서1: clamp-type current sensor having a Rogowski coil according to the present invention

10 : 로고스키코일10: Rogo Ski Coil

11 : 플렉서블 공심코어11: flexible core core

13 : 코일13: coil

15 : 차폐케이블15: shielded cable

17 : 보호튜브17: protective tube

20 : 개폐식하우징20: retractable housing

21 : 제 1 하우징부재21: first housing member

23 : 제 2 하우징부재23: second housing member

25 : 힌지부25: hinge part

27 : 결합부27: coupling part

30 : 차폐커버 30: shielding cover

40 : 커넥터40: connector

50 : 쿠션부재50: cushion member

100 : 종래기술에 따른 로고스키코일을 구비하는 전류센서100: current sensor having a Rogo ski coil according to the prior art

Claims (5)

피측정전류가 흐르는 도체의 둘레에 설치되어 상기 도체에 흐르는 전류를 검출하는 로고스키코일을 포함하는 전류센서에 있어서,A current sensor comprising a Rogowski coil installed around a conductor through which a current to be measured flows and detecting a current flowing through the conductor, 플렉서블 공심코어에 코일이 권선되어 형성되는 로고스키코일;Rogoski coil formed by winding a coil on the flexible core core; 반원 형상의 제 1 및 제 2 하우징부재의 일단이 힌지부에 의해 연결되어 개폐가능하게 형성되고 그 내부에는 상기 로고스키코일이 수용되며 상기 제 1 및 제 2 하우징부재의 타단에는 링 형상이 유지되도록 하는 결합부가 각각 형성되는 개폐식하우징; 및One end of the semi-circular first and second housing members are connected to each other by a hinge to be opened and closed, the logo ski coil is accommodated therein, and the other end of the first and second housing members maintains a ring shape. Opening and closing housings each of which is formed; And 상기 제 1 및 제 2 하우징부재의 개방 상단에 결합되는 차폐커버;를 포함하여 이루어지는 로고스키코일을 포함하는 분할클램프식 전류센서.Split-clamp type current sensor comprising a logo ski coil consisting of; a shielding cover coupled to the open top of the first and second housing members. 청구항 1에 있어서,The method according to claim 1, 상기 로고스키코일은 코일의 권선 후 코일의 끝단부를 플렉서블 공심코어로 관통시켜 시작단부와 나란히 위치시킨 후 중립단자에 연결시키고 그 외주면을 차폐케이블로 감쌈에 따라 형성되는 것을 특징으로 하는 로고스키코일을 포함하는 분할클램프식 전류센서.The Rogo ski coil is formed by winding the coil through the end of the coil through a flexible concentric core and placed side by side with the start end, connected to the neutral terminal and wrapped around the outer peripheral surface with a shielding cable. Split clamp type current sensor that includes. 청구항 2에 있어서,The method according to claim 2, 상기 차폐케이블로 감싸진 로고스키코일은 보호튜브 내에 삽입되는 것을 특징으로 하는 로고스키코일을 포함하는 분할클램프식 전류센서.Logo clamped coil wrapped with the shielded cable is a split clamp type current sensor comprising a logo ski coil, characterized in that inserted into the protective tube. 청구항 1 내지 청구항 3 중 어느 하나의 항에 있어서,The method according to any one of claims 1 to 3, 상기 제 1 또는 제 2 하우징부재의 일측으로 돌출되게 형성되고 상기 로고스키코일의 코일단부가 결합되는 커넥터를 더 포함하여 이루어지는 것을 특징으로 하는 로고스키코일을 포함하는 분할클램프식 전류센서.Split clamp type current sensor comprising a logo ski coil formed to protrude to one side of the first or second housing member and further comprises a connector coupled to the coil end of the logo ski coil. 청구항 4에 있어서,The method according to claim 4, 상기 결합부에 의해 링을 형성하는 상기 제 1 및 제 2 하우징부재의 내주면에 각각 결합되어 상기 도체에 안정적으로 설치되도록 하는 쿠션부재를 더 포함하여 이루어지는 것을 특징으로 하는 로고스키코일을 포함하는 분할클램프식 전류센서.Split clamps comprising a logo ski coil further comprises a cushion member coupled to the inner circumferential surfaces of the first and second housing members forming a ring by the coupling portion to be stably installed on the conductor. Type current sensor.
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