KR20030078540A - the electric meter of one terminal type - Google Patents

the electric meter of one terminal type Download PDF

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Publication number
KR20030078540A
KR20030078540A KR1020020017649A KR20020017649A KR20030078540A KR 20030078540 A KR20030078540 A KR 20030078540A KR 1020020017649 A KR1020020017649 A KR 1020020017649A KR 20020017649 A KR20020017649 A KR 20020017649A KR 20030078540 A KR20030078540 A KR 20030078540A
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South Korea
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single connection
port
terminal
power
output
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KR1020020017649A
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Korean (ko)
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KR100435779B1 (en
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심재강
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엘지산전 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
    • G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
    • G01R22/061—Details of electronic electricity meters
    • G01R22/065—Details of electronic electricity meters related to mechanical aspects
    • 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
    • G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
    • G01R1/0416—Connectors, terminals
    • 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
    • G01R13/401—Arrangements for displaying electric variables or waveforms using modulation of a light beam otherwise than by mechanical displacement, e.g. by Kerr effect for continuous analogue, or simulated analogue, display
    • G01R13/403—Arrangements for displaying electric variables or waveforms using modulation of a light beam otherwise than by mechanical displacement, e.g. by Kerr effect for continuous analogue, or simulated analogue, display using passive display devices, e.g. liquid crystal display or Kerr effect display devices

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Abstract

PURPOSE: A single connection port type electronic metering system is provided, which makes the whole external size compact and improves the handling property and safety by constituting an input port and an output port in a single connection type. CONSTITUTION: An external form of a power metering system comprises a body(21) and a front cover and a port part(23) and a port cover. Single connection ports(25a,25b) are installed on the port part, and input power lines(26a,26b) and output load lines(27a,27b) are connected to the single connection ports at the same time. An image current transformer(28) and a main circuit board(29) calculating and displaying consumed power and a liquid crystal display board(30) are installed in the body. And a display window is installed on the front cover.

Description

단일접속 단자형 전자식 전력량계{the electric meter of one terminal type}The electric meter of one terminal type

본 발명은 일반 전력 사용처에서 사용한 소비전력을 계측하기 위해 사용되는 전자식 전력량계에 관한 것으로, 보다 상세하게는 전자식 전력량계의 전체적인 외형을 소형화하여 설치면적을 축소함과 함께 시공의 편의성을 도모하고 취급성 및 안전성을 향상시킬 수 있도록 한 것이다.The present invention relates to an electronic wattmeter used to measure the power consumption used at a general electric power use site, and more particularly, to reduce the installation area by miniaturizing the overall appearance of the electronic wattmeter and to promote construction convenience, handling and It is to improve the safety.

일반적인 가정이나 공장 등 전기를 사용하는 전력 사용처에는 소비전력을 계측하기 위한 전력량계가 설치되며, 이러한 전력량계는 기계식 전력량계와 전자식 전력량계로 구분된다.Electricity sources such as homes and factories that use electricity are installed in the electricity meter to measure the power consumption. These electricity meters are divided into mechanical and electronic electricity meters.

또한 전자식 전력량계는 기계식 전력량계에 비해 기계적인 가동부가 없기 때문에 검침값의 신뢰도가 높고 안정적이며, 회로의 집적화를 통하여 기기를 소형화할 수 있는 장점을 가진다.In addition, since the electronic wattmeter has no mechanical moving parts, the reliability of the reading is high and stable, and the device can be miniaturized through the integration of a circuit.

더우기 근래에는 다양한 매체(전화선, 전용선, 전력선, 광케이블, 무선 등)를 이용한 원격 검침의 부가기능을 가진 전력량계로 발전하는 등 전자식 전력량계의 수요는 더욱 증가할 것으로 예상된다.In addition, the demand for electronic electricity meters is expected to increase further in recent years, with the development of electricity meters with the additional function of remote meter reading using various media (telephone line, leased line, power line, optical cable, wireless, etc.).

도 1과 도 2에는 종래에 사용되어 온 전자식 전력량계가 도시되어 있다.1 and 2 illustrate an electronic wattmeter that has been used in the related art.

전력량계의 외형은 몸체(1)와 전면커버(2)와 단자대(3) 및 단자커버(4)로 이루어져 있다.The outer shape of the wattmeter consists of a body (1), the front cover (2), the terminal block (3) and the terminal cover (4).

상기 단자대(4)에는 입력 전원선(7a)(7b)이 각각 접속되는 입력측 단자(5a)(5b)와 출력 부하선(8a)(8b)이 각각 접속되는 출력측 단자(6a)(6b)가 장착되어 있으며, 상기 각 단자(5a)(5b)(6a)(6b)들은 충분한 절연 간격을 가지도록 일정한 거리를 두고 횡으로 배열되어 있다.The terminal block 4 has output side terminals 6a and 6b to which input side terminals 5a and 5b to which input power lines 7a and 7b are connected, and output load lines 8a and 8b, respectively. The terminals 5a, 5b, 6a, 6b are arranged laterally at a constant distance so as to have a sufficient insulation interval.

상기 몸체(1)의 내부에는 입력측 단자(5b)와 출력측 단자(6a)를 연결하는 중성단자인 접속편(9)이 있고 또 다른 입력측 단자(5a)와 출력측 단자(6b)는 전선(10)에 의해 연결되어 있다.Inside the body 1 there is a connecting piece 9 which is a neutral terminal connecting the input side terminal 5b and the output side terminal 6a, and another input side terminal 5a and the output side terminal 6b are wires 10. Connected by

즉, 전선(10)에는 입력 전원선(7a)과 출력 부하선(8b)이 연결되고 접속편(9)에는 입력 전원선(7b)과 출력 부하선(8a)이 연결되어 전자식 전력량계의 주회로를 구성한다.That is, the input power line 7a and the output load line 8b are connected to the wire 10, and the input power line 7b and the output load line 8a are connected to the connecting piece 9 so that the main circuit of the electronic wattmeter is connected. Configure

주회로인 상기 전선(10)에는 전력량계의 핵심소자 회로인 영상 변류기(11)가 설치되어 있고 몸체(1)의 내부에는 소비전력을 연산하여 표시하기 위한 주회로 기판(12)과 액정표시판(13)이 설치되어 있으며, 전면 커버(2)에는 액정표시판(13)에 표시된 숫자를 외부에서 볼 수 있도록 하기 위한 표시창(14)이 설치되어 있다.The main circuit 10 is provided with an image current transformer 11, which is a core element circuit of a watt-hour meter, and a main circuit board 12 and a liquid crystal display panel 13 for calculating and displaying power consumption inside the body 1. Is installed, and the front cover 2 is provided with a display window 14 for viewing the numbers displayed on the liquid crystal panel 13 from the outside.

따라서 전원의 인가에 의해 입력 전원선(7a)(7b)이 각각 접속되는 입력측 단자(5a)(5b)와 출력 부하선(8a)(8b)이 각각 접속되는 출력측 단자(6a)(6b)를 통해 상호 통전이 되면 사용되어진 부하(사용 전력량)는 전류에 따라 영상 변류기(11)를 통하여 2차 전류로 검출되고 검출된 전류를 근거로 주회로 기판(12)에서 소비전력을 연산하게 되며, 연산된 전력량은 액정표시판(13)을 통해 나타나게 된다.Therefore, the input side terminals 5a and 5b to which the input power lines 7a and 7b are connected to the output side terminals 6a and 6b to which the output load lines 8a and 8b are respectively connected by application of a power source. When the electricity is supplied to each other, the used load (power amount) is detected as the secondary current through the image current transformer 11 according to the current, and the power consumption is calculated in the main circuit board 12 based on the detected current. The amount of power supplied is shown through the liquid crystal panel 13.

그러나 상기와 같은 종래의 전자식 전력량계는 단자대(3)에 장착된 입력측 단자(5A(5B)와 출력측 단자(6A)(6B)들이 일렬로 횡으로 배열되는 구조이어서 단자대(3)의 폭이 커야하고 이에따라 몸체(1)의 폭이 커져야 한다.However, the conventional electronic electricity meter as described above has a structure in which the input side terminals 5A (5B) and the output side terminals 6A, 6B mounted on the terminal block 3 are arranged side by side in a row so that the width of the terminal block 3 must be large. Accordingly, the width of the body 1 should be large.

즉, 전기 안전상 각각의 입력측 단자(5a(5b)와 출력측 단자(6a)(6b) 사이에 는 최소한의 절연거리가 유지되어야 하기 때문에 단자대(3)와 몸체(1)의 폭을 축소하는데 한계가 있고 따라서 전력량계를 소형화하는데 어려움이 있었다.That is, for electrical safety, the minimum insulation distance must be maintained between each input terminal 5a (5b) and the output terminal 6a, 6b, so that there is a limit to reducing the width of the terminal block 3 and the body 1. Therefore, it was difficult to miniaturize the electricity meter.

더우기 전력량계는 전력 공급방식에 따라 3상 3선식 또는 3상 4선식으로도 제작되는데, 이러한 경우에는 입력 전원선과 출력 부하선이 각각 3선 또는 4선이고 단자는 6개 또는 8개가 되므로 도 1 및 도 2에 도시한 바와 같은 단상 2선식 전력량계와는 달리 몸체의 크기가 비교할 수 없을 정도로 커져야 한다.Furthermore, the electricity meter is also manufactured in three-phase three-wire or three-phase four-wire type depending on the power supply method. In this case, the input power line and the output load line are three or four wires, respectively, and six or eight terminals are provided. Unlike the single-phase two-wire wattmeter shown in FIG. 2, the size of the body must be large enough to be incomparable.

또한 사용되는 전류의 최대 허용 용량(40A, 60A, 80A, 120A 등)에 따라 전기 안전상 절연거리가 길어지고 전선의 직경이 굵어지게 되므로 단자는 더욱 커질 소지가 많으며, 이러한 경우 몸체도 커지게 된다.In addition, according to the maximum allowable capacity of the current (40A, 60A, 80A, 120A, etc.), the insulation distance is increased and the diameter of the wire becomes thicker for electrical safety, so the terminal is much larger, and in this case, the body becomes larger.

한편 상기와 같이 전력량계의 몸체가 커지면 제조공정상의 부가적 경비부담으로 제조원가가 상승하고 물류비용이 증가하게 되며, 많은 설치공간을 필요로 하고 운반 및 취급이 불리해진다.On the other hand, when the body of the electricity meter is larger as described above, the manufacturing cost increases and the logistics cost increases due to the additional cost burden in the manufacturing process, requires a lot of installation space and disadvantageous transportation and handling.

또한 종래의 전력량계는 입력측 단자와 출력측 단자가 나란히 횡으로 배열되어 있기 때문에 설치 시공시 입력 전원선과 출력 부하선을 단자에 잘못 결선하는 경우가 종종 발생하고 이러한 경우 단락에 의한 화재등의 전기 안전사고를 일으키게 된다.In addition, in the conventional power meter, since the input terminal and the output terminal are arranged side by side, the input power line and the output load line are often incorrectly connected to the terminal during installation. Will be raised.

본 발명은 입력측 단자와 출력측 단자를 단일 접속단자형으로 구성하여 전체 외형 크기를 소형화하고 취급성 및 안전성이 향상될 수 있는 단일 접속단자형 전자식 전력량계를 제공하기 위한 것이다,An object of the present invention is to provide a single connection terminal type electronic power meter which can form an input terminal and an output terminal in a single connection terminal type to reduce the overall size and improve handling and safety.

상기와 같은 목적을 달성하기 위한 본 발명의 실시예에 따라 몸체, 단자대, 영상 변류기, 주회로 기판, 표시소자 등으로 구성된 전자식 전력량계에 있어서, 상기 단자대에 단일접속 단자를 배열 설치하고 입력 전원선과 출력 부하선을 상기 단일 접속단자에 함께 접속 고정한 단일접속 단자형 전자식 전력량계가 제공된다.According to an embodiment of the present invention for achieving the above object, in an electronic power meter consisting of a body, a terminal block, an image current transformer, a main circuit board, a display element, etc., a single connection terminal is arranged in the terminal block, and an input power line and an output are provided. A single connection terminal type electronic wattmeter is provided in which a load line is connected and fixed to the single connection terminal.

도 1은 종래 전자식 전력량계를 나타낸 사시도1 is a perspective view showing a conventional electronic electricity meter

도 2는 종래 전자식 전력량계의 커버를 개방한 상태로 도시한 사시도Figure 2 is a perspective view showing a state in which the cover of the conventional electronic electricity meter is open

도 3은 본 발명에 따른 전력량계의 사시도3 is a perspective view of a power meter according to the present invention;

도 4는 본 발명에 따른 전력량계의 커버를 개방한 상태로 도시한 사시도4 is a perspective view showing the cover of the electricity meter according to the present invention in an open state;

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

21 : 몸체 23 : 단자대21 body 23 terminal block

25a, 25b : 단일접속 단자 26a, 26b : 입력 전원선25a, 25b: single connection terminal 26a, 26b: input power line

27a, 27b : 출력 부하선27a, 27b: output load line

도 3과 도 4는 본 발명에 따른 전자식 전력량계를 나타낸 사시도이다.3 and 4 are perspective views showing an electronic wattmeter in accordance with the present invention.

전력량계의 외형은 몸체(21)와 전면커버(22)와 단자대(23) 및 단자커버(24)로 이루어져 있다.The appearance of the electricity meter is composed of a body 21, the front cover 22, the terminal block 23 and the terminal cover 24.

상기 단자대(23)에는 입력 전원선(26a)(26b)과 출력 부하선(27a)(27b)이 동시에 접속될 수 있는 단일 접속단자(25a)(25b)가 장착되어 있으며, 상기 단일 접속단자(25a)(25b)는 충분한 절연 간격을 가지도록 일정한 거리를 두고 배열되어 있다.The terminal block 23 is equipped with single connection terminals 25a and 25b to which input power lines 26a and 26b and output load lines 27a and 27b can be simultaneously connected. 25a) and 25b are arranged at a constant distance to have a sufficient insulation gap.

상기 몸체(21)의 내부에는 전력량계의 핵심소자 회로인 영상 변류기(28)와, 소비전력을 연산하여 표시하기 위한 주회로 기판(29)과, 연산된 전력량을 표시하는 액정표시판(30)이 설치되어 있으며, 전면 커버(22)에는 액정표시판에 표시된 숫자를 외부에서 볼 수 있도록 하기 위한 표시창(31)이 설치되어 있다.Inside the body 21, an image current transformer 28, which is a core element circuit of a watt-hour meter, a main circuit board 29 for calculating and displaying power consumption, and a liquid crystal display panel 30 for displaying the calculated power amount are installed. The front cover 22 is provided with a display window 31 for viewing the numbers displayed on the liquid crystal panel from the outside.

상기 출력 부하선(27a)(27b)은 입력 전원선(26a)(26b)의 반대측으로 부터 몸체(21)내로 인입되며, 그중 하나의 출력 부하선(27a)은 영상 변류기(28)를 통과하여 단일 접속단자(25a)에 연결되어 있다.The output load lines 27a and 27b are introduced into the body 21 from opposite sides of the input power lines 26a and 26b, one of which output load lines 27a passes through the image current transformer 28 It is connected to the single connection terminal 25a.

상기와 같이 된 본 발명의 전자식 전력량계는 주회로에 전원을 인가하면 단일 접속단자(25a)(25b) 내부에서 입력 전원선(26a)(26b)과 출력 부하선(27a)(27b)이 동시에 접속되어 있기 때문에 입력 전원선(26a)(26b)과 출력 부하선(27a)(27b) 사이에 통전이 이루어지고 사용되어진 부하는 영상 변류기(28)를 통하여 2차 전류로 검출되며, 검출된 2차 전류를 근거로 주회로 기판(29)에서 소비전력을 연산하게 된다.In the electronic watt-hour meter of the present invention as described above, when power is applied to the main circuit, input power lines 26a and 26b and output load lines 27a and 27b are simultaneously connected in a single connection terminal 25a or 25b. Since the current is supplied between the input power lines 26a and 26b and the output load lines 27a and 27b, the load used is detected as the secondary current through the image current transformer 28, and the detected secondary The power consumption is calculated in the main circuit board 29 based on the current.

상기와 같이 주회로 기판(29)에서 연산된 소비전력량은 액정표시판(30)에 표시되고 전면 커버(22)에 설치된 표시창(31)을 통해 외부에서 볼 수 있게 된다.The power consumption calculated by the main circuit board 29 as described above is displayed on the liquid crystal panel 30 and can be viewed from the outside through the display window 31 installed on the front cover 22.

상기와 같이 본 발명에 따른 전자식 전력량계는 입력 전원선과 출력 부하선을 단일 접속단자에 연결 구성함에 의해 단자대의 폭을 절반으로 줄일 수 있으므로 전력량계의 획기적인 소형화가 가능해진다.As described above, the electronic power meter according to the present invention can reduce the width of the terminal block by half by connecting the input power line and the output load line to a single connection terminal, thereby enabling the miniaturization of the power meter.

한편 단자대의 폭이 줄어드는 만큼 몸체내의 공간도 줄어들지만 주회로 기판의 구성에는 영향을 미치지 않으며, 영상 변류기의 설치 및 기타 부품을 설치하는데 충분한 공간을 확보할 수 있다.On the other hand, as the width of the terminal block is reduced, the space in the body is reduced, but it does not affect the configuration of the main circuit board, and sufficient space for installing the video current transformer and other components can be secured.

따라서 본 발명은 전력량계의 소형화에 따라 물류비를 절감할 수 있고 설치 및 시공이 간편해지며, 제품의 취급성 및 안전성이 향상된다.Therefore, the present invention can reduce the logistics cost according to the miniaturization of the electricity meter, simplify the installation and construction, and improves the handling and safety of the product.

또한 출력측 단자를 단일접속 단자형으로 구성하여 절연성능을 더욱 강화시킬 수 있고, 입력 전원선과 부하 출력선을 잘못 결선할 우려가 없어져 결선 잘못으로 발생하는 단락사고를 사전에 예방할 수 있게 된다.In addition, by configuring the output terminal as a single connection terminal type, the insulation performance can be further enhanced, and there is no fear of incorrectly connecting the input power line and the load output line, thereby preventing short circuit accidents caused by incorrect wiring.

Claims (1)

몸체, 단자대, 영상 변류기, 주회로 기판, 표시소자 등으로 구성된 전자식 전력량계에 있어서,In the electronic wattmeter composed of a body, a terminal block, a video current transformer, a main circuit board, a display element, 상기 단자대에 단일접속 단자를 배열 설치하고 입력 전원선과 출력 부하선을 상기 단일 접속단자에 함께 접속 고정한 것을 특징으로 하는 단일접속 단자형 전자식 전력량계.And a single connection terminal is arranged in the terminal block, and an input power line and an output load line are connected and fixed together to the single connection terminal.
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KR20050031673A (en) * 2003-09-30 2005-04-06 엘지산전 주식회사 Direct-coupled electronic watt-hour meter
KR200447832Y1 (en) * 2008-01-09 2010-02-24 정승환 An electronic meter measuring electricity usage of non-contact terminal style
KR200448142Y1 (en) * 2007-11-06 2010-03-18 주식회사 이에스텍 Electronic watthour meter
KR101342513B1 (en) * 2012-07-19 2014-01-02 주식회사 신진이엔지 Assembly type base of electronic watt-hour meter
KR102077940B1 (en) * 2018-09-20 2020-02-17 주식회사 씨앤유글로벌 Electronic power meter with selectable replacement of terminal block according to instrument type
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KR20050031673A (en) * 2003-09-30 2005-04-06 엘지산전 주식회사 Direct-coupled electronic watt-hour meter
KR200448142Y1 (en) * 2007-11-06 2010-03-18 주식회사 이에스텍 Electronic watthour meter
KR200447832Y1 (en) * 2008-01-09 2010-02-24 정승환 An electronic meter measuring electricity usage of non-contact terminal style
KR101342513B1 (en) * 2012-07-19 2014-01-02 주식회사 신진이엔지 Assembly type base of electronic watt-hour meter
KR102077940B1 (en) * 2018-09-20 2020-02-17 주식회사 씨앤유글로벌 Electronic power meter with selectable replacement of terminal block according to instrument type
EP3751295A1 (en) * 2019-06-12 2020-12-16 Carlo Gavazzi Services AG Electrical rail mount device and cover for an electrical rail mount device
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KR102598610B1 (en) * 2023-07-18 2023-11-07 제이앤디전자(주) Watt-hour meter case

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