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JP5356907B2 - Stationary separation terminal - Google Patents
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JP5356907B2 - Stationary separation terminal - Google Patents

Stationary separation terminal Download PDF

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JP5356907B2
JP5356907B2 JP2009110605A JP2009110605A JP5356907B2 JP 5356907 B2 JP5356907 B2 JP 5356907B2 JP 2009110605 A JP2009110605 A JP 2009110605A JP 2009110605 A JP2009110605 A JP 2009110605A JP 5356907 B2 JP5356907 B2 JP 5356907B2
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terminal
instrument
separation
load
power supply
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JP2010261733A (en
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一博 菊池
正夫 工藤
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Osaki Electric Co Ltd
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Osaki Electric Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a stationary separated terminal that is used in an existing environment without increasing the installation space of a conventional watt-hour meter nearly at all, and capable of efficiently executing an operation of replacement of an instrument without power stoppage and operations of stopping and recovering power transmission by an inexpensive means and without a possibility of exposure of a charged part, or the like. <P>SOLUTION: The stationary separated terminal provided herein can be accepted in a terminal of the instrument so that it connects a distribution line with the instrument, and is separable from the terminal of the instrument. The terminal is divided into a power supply side separated terminal and a load side separated terminal. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

本発明は、例えば電力量計等の計器の端子部に関し、特に、計器の端子部内に着脱可能に設置される、据置型分離端子に関する。   The present invention relates to a terminal portion of a meter such as a watt hour meter, and more particularly to a stationary separation terminal that is detachably installed in the terminal portion of the meter.

一般に、電力量計は使用期間が定められている。特に劣化部品を多く含む計器部は、定期的に交換することが義務付けられているが、計器交換作業は、需要家側を停電させることなく行うことが望ましい。   In general, the usage period is determined for the watt-hour meter. In particular, it is obliged to periodically replace the instrument part including many deteriorated parts, but it is desirable to perform the instrument replacement work without causing the customer side to lose power.

特開平7−248343号の据置端子は、計器に通電させるための通電カセットとバイパス用の短絡カセットにより、無停電の計器の交換を可能にしている。具体的には、据置端子の内部で、通電カセット用の接続部と短絡カセット用の接続部の間にカム機構を設け、計器による計測時は、据置端子に通電カセットを取り付けた状態で使用し、無停電での計器交換時は、据置端子に短絡カセットを取り付けることによって、カム機構が作動し、自動的に通電カセットが外れるようになっている。送電の停止時には、通電カセットと短絡カセットの両方を外し、停解時は再度通電カセットのみを取り付ける。しかし、この据置端子では、通電カセット用の接続部と短絡カセット用の接続部が別個に設けられていることから、壁面に取り付けられた時の据置端子の縦方向寸法が大きくなっている。また、端子盤自体が、従来の計器端子部に外付けされるものであり、この結果、端子盤を含めた電力計全体の設置スペースを大きなものとしている。   The stationary terminal of Japanese Patent Application Laid-Open No. 7-248343 enables an uninterruptible exchange of an instrument by an energizing cassette for energizing the instrument and a short-circuit cassette for bypassing. Specifically, inside the stationary terminal, a cam mechanism is provided between the connection part for the current-carrying cassette and the connection part for the short-circuit cassette, and the instrument is used with the current-carrying cassette attached to the stationary terminal when measuring by the instrument. When replacing the instrument without an uninterruptible power supply, the cam mechanism is activated by attaching a short-circuit cassette to the stationary terminal, and the energizing cassette is automatically removed. When power transmission stops, remove both the current-carrying cassette and the short-circuit cassette, and when it stops, attach only the current-carrying cassette again. However, in this stationary terminal, since the connection portion for the current-carrying cassette and the connection portion for the short-circuit cassette are separately provided, the vertical dimension of the stationary terminal when attached to the wall surface is large. Moreover, the terminal board itself is externally attached to the conventional instrument terminal part, and as a result, the installation space of the whole wattmeter including the terminal board is made large.

上記したような従来の据置端子は、作業者が計器交換作業及び送電の停止停解作業を配電線の誤接続等の虞なく効率的に行うことを目的としているが、設置スペース及びコストの面で不十分である。端子盤を含めた電力量計の取付けに使用できる壁面の面積は、通常、限られているため、端子盤の寸法はできるだけ小さいことが望ましい。特に隠蔽配線の場合には、その必要性がある。即ち、各建造物の壁面における電力量計の取付け位置は、建造物ごとに予め決められているが、これに加えて、隠蔽配線の場合には、配電線を壁面に形成された既設の穴に通す必要がある。この場合、特に、端子盤の縦方向寸法が大きいと、既設穴の位置が端子盤の電線挿入穴に近すぎたり、端子盤が既設穴を覆うことがあり、既設穴から延びる太い配電線を無理に曲げて配置しなければならない等、計器交換時の作業が煩雑になる。また通電カセットを外すための端子盤内部のカム機構は、端子盤を大型化し、且つ構造を複雑で高価なものにする。   The conventional stationary terminals as described above are intended to allow an operator to efficiently perform instrument replacement work and power transmission stop and stop work without fear of incorrect connection of distribution lines, etc., but in terms of installation space and cost. Is insufficient. Since the area of the wall surface that can be used for mounting the watt hour meter including the terminal board is usually limited, it is desirable that the dimensions of the terminal board be as small as possible. This is particularly necessary for hidden wiring. In other words, the installation position of the watt-hour meter on the wall surface of each building is predetermined for each building. In addition, in the case of concealed wiring, an existing hole formed on the wall surface of the distribution line is used. It is necessary to pass through. In this case, especially when the vertical dimension of the terminal board is large, the position of the existing hole may be too close to the wire insertion hole of the terminal board, or the terminal board may cover the existing hole. The work at the time of instrument exchange becomes complicated, for example, it must be bent and arranged. Further, the cam mechanism inside the terminal board for removing the energizing cassette enlarges the terminal board and makes the structure complicated and expensive.

特開平7−198753号では、電線が接続される従来の計器端子部が、計器から分離される構造を開示している。この構造では、電線と電力量計の計器部との間を接続する端子金具を組み込んだ端子ブロックを独立構造部品とし、これを計器部側の端子ブロック受け具に着脱可能に装着している。端子ブロックの電線側では、電線に接続される端子金具が、同極の電源側電線と負荷側電線(1Sと1L、2Sと2L、3Sと3L)が前後に二段重ねに配置されるように位置決めされており、電源側端子金具と負荷側端子金具の間を短絡ボルトで接続することにより短絡が行われる。計器交換時は、短絡ボルトにより電源側と負荷側を短絡させた後、端子ブロックを計器から分離する。   Japanese Patent Laid-Open No. 7-198753 discloses a structure in which a conventional instrument terminal to which an electric wire is connected is separated from the instrument. In this structure, a terminal block incorporating a terminal fitting for connecting between the electric wire and the meter unit of the watt hour meter is used as an independent structural component, and this is detachably attached to the terminal block holder on the meter unit side. On the electric wire side of the terminal block, the terminal fittings connected to the electric wires are arranged so that the power supply side electric wires and the load side electric wires (1S and 1L, 2S and 2L, 3S and 3L) of the same polarity are arranged in two stages in the front and rear. Are short-circuited by connecting the power-side terminal fitting and the load-side terminal fitting with a short-circuit bolt. When replacing the instrument, short-circuit the power supply side and load side with a short-circuit bolt, and then separate the terminal block from the instrument.

上記したように、特開平7−198753号の端子ブロックでは、同極の電源側電線と負荷側電線とが前後に二段重ねされるように配置されている。これに対し、現在使用されている多くの計器端子部では、電線挿入部が、電源側(1S、2S、3S)と負荷側(1L、2L、3L)に分かれて、横一列に並んで配置されている。このため、既設の環境において、電線の長さに余裕がない場合、このような端子ブロックは使用することが困難である。また、同極の電源側電線と負荷側電線とを二段重ねに配置するために、端子ブロックにおける電線側の端子金具は、電源側と負荷側が縦方向にずれた位置に整列させられている。このため、特開平7−248343号の据置端子と同様に、端子ブロックの縦方向寸法が大きい。   As described above, in the terminal block disclosed in Japanese Patent Application Laid-Open No. 7-198753, the same-polarity power-side electric wire and load-side electric wire are arranged so as to be overlapped in two stages. On the other hand, in many instrument terminal parts currently used, the electric wire insertion part is divided into a power supply side (1S, 2S, 3S) and a load side (1L, 2L, 3L) and arranged in a horizontal row. Has been. For this reason, it is difficult to use such a terminal block when there is no margin in the length of the electric wire in the existing environment. Moreover, in order to arrange the power supply side electric wires and the load side electric wires of the same polarity in two layers, the terminal fittings on the electric wire side in the terminal block are aligned at positions where the power supply side and the load side are shifted in the vertical direction. . For this reason, the vertical dimension of the terminal block is large as in the stationary terminal disclosed in JP-A-7-248343.

さらに、特開平7−198753号では、計器交換時、端子ブロックが計器から分離されたとき、充電部の端子金具が露出される。この場合、作業者が、露出された充電部に接触して感電する虞があり、また機器の破損等の虞もある。
特開平7−248343号 特開平7−198753号
Furthermore, in Japanese Patent Laid-Open No. 7-198753, when the terminal is separated from the instrument when the instrument is replaced, the terminal fitting of the charging unit is exposed. In this case, there is a possibility that the operator may come into contact with the exposed charging unit and receive an electric shock, and there is a possibility that the device is damaged.
JP-A-7-248343 JP-A-7-198753

このような従来技術の問題点に鑑み、本発明の目的は、従来の電力量計の設置スペースをほとんど増加させることなく既設の環境において使用でき、且つ、無停電での計器交換作業及び送電の停止停解作業を安価な手段で、充電部を露出させる等の虞なく効率的に行うことを可能にする、据置型分離端子を提供することにある。   In view of such problems of the prior art, the object of the present invention is to be used in an existing environment with almost no increase in the installation space of the conventional watt hour meter, An object of the present invention is to provide a stationary separation terminal that enables a stop and stop operation to be efficiently performed by an inexpensive means without the risk of exposing a charging unit.

請求項1に記載の発明によれば、配電線と計器とを接続するように前記計器の端子部内に受け入れられ、且つ、前記計器の端子部から分離可能な、据置型分離端子であって、電源側分離端子と負荷側分離端子とに分割されている、据置型分離端子が提供される。この構成によれば、従来の計器端子部に外付けされる据置端子のように追加の設置面積を必要とすることなく、計器に取り付けることができる。また、電源側分離端子と負荷側分離端子とに分割されているので、送電の停止停解時に、負荷側分離端子によって一括して配電線を着脱でき、これにより、着脱すべき配電線を間違える虞がなく確実に作業を行うことができる。また、分離端子を計器端子部から抜き差しするだけで送電の停止停解を行うことができるため、スイッチやカム機構等の複雑な構造が不要であり、このため、安価な方法で停止停解作業を行うことができる。   According to the invention of claim 1, a stationary separation terminal that is received in the terminal portion of the meter so as to connect the distribution line and the meter and is separable from the terminal portion of the meter, A stationary separation terminal is provided that is divided into a power supply side separation terminal and a load side separation terminal. According to this structure, it can be attached to a meter without requiring an additional installation area like a stationary terminal externally attached to a conventional meter terminal portion. In addition, since it is divided into a power supply side separation terminal and a load side separation terminal, when the power transmission is stopped or stopped, the distribution line can be attached / detached collectively by the load side separation terminal, thereby making a mistake in the distribution line to be attached / detached. The work can be performed reliably without fear. In addition, since the power transmission can be stopped and stopped simply by inserting and removing the separation terminal from the instrument terminal section, a complicated structure such as a switch or cam mechanism is not required. It can be performed.

請求項2に記載の発明によれば、請求項1の発明において、前記電源側分離端子及び負荷側分離端子は、それぞれ、前記配電線を受け入れる電線挿入穴を備えており、前記電線挿入穴は、前記電源側分離端子及び負荷側分離端子が前記計器の端子部内に受け入れられた時、前記計器の端子部に対して横一列に配置される、据置型分離端子が提供される。この構成によれば、従来の計器に対応した長さの既設の配電線に容易に接続することができるため、既設の環境においても容易に設置することができる。   According to the invention of claim 2, in the invention of claim 1, the power supply side separation terminal and the load side separation terminal are each provided with an electric wire insertion hole for receiving the distribution line, and the electric wire insertion hole is A stationary separation terminal is provided which is arranged in a horizontal row with respect to the terminal portion of the instrument when the power supply side separation terminal and the load side separation terminal are received in the terminal portion of the instrument. According to this structure, since it can connect easily to the existing distribution line of the length corresponding to the conventional meter, it can install easily also in the existing environment.

請求項3に記載の発明によれば、請求項1または2の発明において、前記計器の端子部における、前記電源側分離端子及び負荷側分離端子に対する接続部は凸部を形成しており、前記電源側分離端子及び負荷側分離端子における、前記計器の端子部に対する接続部は凹部を形成している。この構成によれば、計器交換時に分離端子の充電部が露出しないため、作業者の感電や機器の破損等の虞なく計器交換作業をすることができる。   According to a third aspect of the present invention, in the first or second aspect of the invention, in the terminal portion of the meter, the connecting portion to the power source side separation terminal and the load side separation terminal forms a convex portion, In the power source side separation terminal and the load side separation terminal, the connection portion to the terminal portion of the meter forms a recess. According to this configuration, since the charging portion of the separation terminal is not exposed when the instrument is replaced, the instrument replacement operation can be performed without fear of the operator's electric shock or equipment damage.

請求項4に記載の発明によれば、請求項3の発明において、前記凸部が丸型プラグである、据置型分離端子が提供される。   According to a fourth aspect of the present invention, there is provided a stationary separation terminal according to the third aspect, wherein the convex portion is a round plug.

請求項5に記載の発明によれば、請求項3の発明において、前記凸部が平型プラグである、据置型分離端子が提供される。   According to the fifth aspect of the present invention, there is provided a stationary separation terminal according to the third aspect, wherein the convex portion is a flat plug.

請求項6に記載の発明によれば、請求項3乃至5のいずれか一項に記載の発明において、前記配電線が中性線を含んでおり、前記負荷側分離端子における、前記中性線に対応する前記凹部の導通部分は、前記凹部の開口端に向けて、他の配電線に対応する前記凹部の導通部分より長く延びている。この構成により、負荷側分離端子が計器の端子部に斜め方向から挿入されても、中性線に対応する導通部分を、他の配電線に対応する導通部分よりも先に計器の端子部と接触させることができ、また、中性線に対応する導通部分を、他の配電線に対応する導通部分よりも後に計器端子部から分離させることができる。これにより、単相3線式の場合も、負荷の電圧バランスを崩すことなく、負荷に接続された機器を保護することができる。   According to the invention described in claim 6, in the invention described in any one of claims 3 to 5, the distribution line includes a neutral wire, and the neutral wire in the load-side separation terminal. The conductive portion of the concave portion corresponding to is extended longer than the conductive portion of the concave portion corresponding to another distribution line toward the opening end of the concave portion. With this configuration, even if the load-side separation terminal is inserted into the terminal portion of the instrument from an oblique direction, the conductive portion corresponding to the neutral wire is connected to the terminal portion of the meter before the conductive portion corresponding to the other distribution lines. The conductive portion corresponding to the neutral wire can be separated from the instrument terminal portion after the conductive portion corresponding to the other distribution lines. Thereby, also in the case of a single-phase three-wire system, the equipment connected to the load can be protected without breaking the voltage balance of the load.

請求項7に記載の発明によれば、請求項3乃至5のいずれか一項に記載の発明において、前記配電線が中性線を含んでおり、前記負荷側分離端子に接続される前記計器の端子部において、前記中性線に対応する前記凸部が、他の配電線に対応する前記凸部よりも大きな長さを有している。この構成により、中性線に対応する導通部分を、他の配電線に対応する導通部分よりも先に計器端子部と接触させることができ、また、中性線に対応する導通部分を、他の配電線に対応する導通部分よりも後に計器端子部から分離させることができる。これにより、単相3線式の場合も、負荷の電圧バランスを崩すことなく、負荷に接続された機器を保護することができる。   According to a seventh aspect of the present invention, in the invention according to any one of the third to fifth aspects, the distribution line includes a neutral wire and is connected to the load side separation terminal. In the terminal portion, the convex portion corresponding to the neutral wire has a length longer than that of the convex portion corresponding to another distribution line. With this configuration, the conductive portion corresponding to the neutral wire can be brought into contact with the instrument terminal portion before the conductive portion corresponding to the other distribution line, and the conductive portion corresponding to the neutral wire can be Can be separated from the instrument terminal portion after the conducting portion corresponding to the distribution line. Thereby, also in the case of a single-phase three-wire system, the equipment connected to the load can be protected without breaking the voltage balance of the load.

請求項8に記載の発明によれば、請求項7の発明において、前記負荷側分離端子における、前記凹部の導通部分と前記凹部の開口端との間に非導通部分が設けられている。この構成により、負荷側分離端子が計器に斜め方向から挿入されても、導通部分に接触するときには正しい姿勢となり、中性線に対応する導通部分は、他の配電線に対応する導通部分よりも先に計器端子部と接触する。これにより、単相3線式の場合も、負荷の電圧バランスを崩すことなく、負荷に接続された機器を保護することができる。   According to an eighth aspect of the present invention, in the seventh aspect of the present invention, a non-conductive portion is provided between the conductive portion of the concave portion and the open end of the concave portion in the load side separation terminal. With this configuration, even when the load-side separation terminal is inserted into the instrument from an oblique direction, the posture is correct when it comes into contact with the conductive portion, and the conductive portion corresponding to the neutral wire is more than the conductive portion corresponding to the other distribution lines. First contact the instrument terminal. Thereby, also in the case of a single-phase three-wire system, the equipment connected to the load can be protected without breaking the voltage balance of the load.

請求項9に記載の発明によれば、請求項6乃至8のいずれか一項に記載の発明において、前記負荷側分離端子が前記計器の端子部に接続されるとき、前記中性線が前記他の配電線よりも先に前記計器の端子部に接続され、前記負荷側分離端子が前記計器の端子部から分離されるとき、前記中性線が前記他の配電線よりも後に前記計器の端子部から分離される。この構成によれば、単相3線式の場合でも、送電の停止停解時に線間の電圧のバランスが崩れ、負荷に接続された機器が過電圧によって破損する虞がない。   According to the invention described in claim 9, in the invention described in any one of claims 6 to 8, when the load side separation terminal is connected to the terminal portion of the meter, the neutral wire is When the load-side separation terminal is separated from the terminal part of the instrument before the other distribution line is connected to the terminal part of the instrument, the neutral line is connected to the instrument after the other distribution line. Separated from the terminal. According to this configuration, even in the case of the single-phase three-wire system, the voltage balance between the lines is lost when power transmission is stopped and stopped, and there is no possibility that the device connected to the load is damaged by the overvoltage.

請求項10に記載の発明によれば、請求項1乃至9のいずれか一項に記載の発明において、前記電源側分離端子と前記負荷側分離端子は、互いに異なる外形を有している。この構成により、計器に対する配電線の接続の誤りを防止することができる。   According to the invention described in claim 10, in the invention described in any one of claims 1 to 9, the power supply side separation terminal and the load side separation terminal have different external shapes. With this configuration, it is possible to prevent an error in the connection of the distribution line to the meter.

請求項11に記載の発明によれば、請求項1乃至10のいずれか一項に記載の発明において、前記電源側分離端子と前記負荷側分離端子は、それぞれ、短絡装置に対する接続部を備えている。この構成によれば、短絡装置の着脱により、無停電での計器交換作業を容易に行うことができる。   According to an eleventh aspect of the present invention, in the invention according to any one of the first to tenth aspects, the power supply side separation terminal and the load side separation terminal each include a connection portion for a short-circuit device. Yes. According to this structure, the instrument replacement | work operation | work without a power failure can be easily performed by attachment or detachment of a short circuit apparatus.

本願発明によれば、従来の電力量計の設置スペースをほとんど増加させることなく既設の環境において使用でき、且つ、無停電での計器交換作業及び送電の停止停解作業を安価な手段で、充電部を露出させる等の虞なく効率的に行う据置型分離端子を提供することができる。   According to the present invention, it can be used in an existing environment with almost no increase in the installation space of a conventional watt-hour meter, and charging equipment can be replaced with an uninterruptible power supply, and power transmission stop and stop work can be performed with inexpensive means. It is possible to provide a stationary separation terminal that can be efficiently performed without fear of exposing the portion.

本発明の据置型分離端子が計器端子部に取り付けられた状態を示す正面図である。It is a front view which shows the state in which the stationary separation terminal of this invention was attached to the instrument terminal part. 据置型分離端子が計器端子部から分離された状態を示す正面図である。It is a front view which shows the state by which the stationary separation terminal was isolate | separated from the instrument terminal part. 計器端子部に取り付けられた据置型分離端子を示す斜視図である。It is a perspective view which shows the stationary type | mold isolation | separation terminal attached to the instrument terminal part. 端子カバーを示す図であり、(A)は正面図、(B)は側面図である。It is a figure which shows a terminal cover, (A) is a front view, (B) is a side view. 図4の端子カバーの後方斜視図である。FIG. 5 is a rear perspective view of the terminal cover of FIG. 4. 図4の端子カバーが適用される場合の据置型分離端子の例を示す正面図である。FIG. 5 is a front view illustrating an example of a stationary separation terminal when the terminal cover of FIG. 4 is applied. 脱落防止機構を備えた据置型分離端子の例を示す図である。It is a figure which shows the example of the stationary separation terminal provided with the drop-off prevention mechanism. 据置型分離端子の内部構造を示す部分断面図である。It is a fragmentary sectional view showing the internal structure of a stationary type separation terminal. 計器端子部と分離端子の接続方法を示す概略部分斜視図である。(A)は、計器側接続部が丸型プラグを備える例を示し、(B)は、計器側接続部が平型プラグを備える例を示す。It is a schematic partial perspective view which shows the connection method of an instrument terminal part and a separation terminal. (A) shows an example in which the instrument side connection part includes a round plug, and (B) shows an example in which the instrument side connection part includes a flat plug. 計器側接続部と分離端子側接続部の構成を説明する図である。It is a figure explaining the structure of the instrument side connection part and the isolation | separation terminal side connection part. 計器側接続部と分離端子側接続部の構成の他の例を説明する図である。It is a figure explaining other examples of composition of a meter side connection part and a separation terminal side connection part. 互いに異なる外形を有する分離端子の例を示す図である。It is a figure which shows the example of the isolation | separation terminal which has a mutually different external shape. 本発明に用いられる短絡装置を示す図である。(A)は、正面図、(B)は側面図である。It is a figure which shows the short circuit apparatus used for this invention. (A) is a front view, (B) is a side view. 図13の短絡装置の斜視図である。It is a perspective view of the short circuit apparatus of FIG. 本発明の据置型分離端子を用いた、無停電による計器の交換方法を説明する図である。It is a figure explaining the exchange method of the instrument by uninterruptible power using the stationary type separation terminal of the present invention. 本発明の据置型分離端子を用いた、送電の停止停解方法を説明する図である。It is a figure explaining the stoppage cancellation method of power transmission using the stationary type | mold separation terminal of this invention.

以下、添付図面を参照して、本発明の一実施形態を説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[据置型分離端子の全体概要]
図1は、本発明の一実施形態による据置型分離端子1を、計器(本実施形態では電力量計)300の計器端子部2に取り付けた状態を示す正面図であり、図2は、据置型分離端子1を計器端子部2から分離した状態を示す正面図である。図1及び図2において、200は、計器本体を示し、計器端子部2は、計器本体200と分離不能に一体化されている(他の図では、計器本体200は図示を省略されている)。本発明の据置型分離端子1は、配電線と計器300とを接続するように計器端子部2の電源側収容部21及び負荷側収容部22内に受け入れられ、且つ、計器端子部2から分離可能になされている。換言すれば、本発明の据置型分離端子1は、配電線が接続される従来の計器の計器端子部の一部が、計器から分離可能とされる構造である。図3は、計器端子部2に取り付けられた据置型分離端子1を示す斜視図であり、配電線及び計器本体200は省略されている。
[Overview of stationary separation terminal]
FIG. 1 is a front view showing a state in which a stationary separation terminal 1 according to an embodiment of the present invention is attached to a meter terminal portion 2 of a meter (a watt hour meter in this embodiment), and FIG. It is a front view which shows the state which isolate | separated the type | mold separation terminal 1 from the instrument terminal part 2. FIG. 1 and 2, reference numeral 200 denotes an instrument body, and the instrument terminal 2 is integrated with the instrument body 200 so as not to be separated (in other drawings, the instrument body 200 is not shown). . The stationary separation terminal 1 of the present invention is received in the power supply side accommodating portion 21 and the load side accommodating portion 22 of the instrument terminal portion 2 so as to connect the distribution line and the instrument 300, and is separated from the instrument terminal portion 2. It has been made possible. In other words, the stationary separation terminal 1 of the present invention has a structure in which a part of a meter terminal portion of a conventional meter to which a distribution line is connected can be separated from the meter. FIG. 3 is a perspective view showing the stationary separation terminal 1 attached to the instrument terminal portion 2, and the distribution line and the instrument body 200 are omitted.

計器300は、建造物の壁面等に固定され、据置型分離端子1の電源側分離端子11及び負荷側分離端子12は、それぞれ、図1に示すように計器端子部2の電源側及び負荷側収容部21、22内に嵌合状態で取り付けられている。本明細書中、「上」、「下」、「左」、「右」、「前」、「後」、「正面」、「背面」、「裏面」等の方向を示す用語は、特に断りのない限り、据置型分離端子1が、計器300と共に、建造物の壁面等に設置された状態に関して用いられる。   The instrument 300 is fixed to a wall surface of a building, and the power supply side separation terminal 11 and the load side separation terminal 12 of the stationary separation terminal 1 are respectively connected to the power supply side and the load side of the instrument terminal portion 2 as shown in FIG. In the accommodating parts 21 and 22, it is attached in the fitting state. In the present specification, terms indicating directions such as “top”, “bottom”, “left”, “right”, “front”, “rear”, “front”, “back”, “back” and the like are not particularly specified. Unless otherwise indicated, the stationary separation terminal 1 is used together with the instrument 300 in a state where it is installed on a wall surface of a building.

図1乃至図3に示すように、据置型分離端子1は、電源側の配電線(1S、2S、3S)に接続される電源側分離端子11と、負荷側の配電線(3L、2L、1L)に接続される負荷側分離端子12とに分割されている。計器端子部2に形成された電源側収容部21、負荷側収容部22は、それぞれ、電源側分離端子11、負荷側分離端子12を嵌合状態で受け入れるように寸法が決められている。電源側及び負荷側収容部21、22における、計器端子部2の下面側は、開放されている。これにより、電源側及び負荷側分離端子11、12の電線挿入穴30に接続された配電線が、計器端子部2の下方に延びて配置される。電源側及び負荷側収容部21、22は、計器端子部2の隔壁23により互いに分離されている。電源側分離端子11と負荷側分離端子12は、それぞれ、電源側収容部21と負荷側収容部22内に形成された、計器側接続部24(図2)に接続され、後述の固定手段により、電源側収容部21、負荷側収容部22内に固定される。電源側及び負荷側分離端子11、12を収めた計器端子部2の前面側には、図4等に示す端子カバー100が取り付けられる。   As shown in FIGS. 1 to 3, the stationary separation terminal 1 includes a power supply side separation terminal 11 connected to a power supply side distribution line (1S, 2S, 3S) and a load side distribution line (3L, 2L, 1L) and the load side separation terminal 12 connected to the load side separation terminal 12. The power source side accommodating portion 21 and the load side accommodating portion 22 formed in the instrument terminal portion 2 are sized so as to receive the power source side separating terminal 11 and the load side separating terminal 12 in a fitted state, respectively. The lower surface side of the meter terminal portion 2 in the power source side and load side accommodating portions 21 and 22 is open. As a result, the distribution lines connected to the wire insertion holes 30 of the power supply side and load side separation terminals 11 and 12 extend below the instrument terminal portion 2 and are arranged. The power supply side and load side accommodating portions 21 and 22 are separated from each other by a partition wall 23 of the instrument terminal portion 2. The power supply side separation terminal 11 and the load side separation terminal 12 are connected to an instrument side connection part 24 (FIG. 2) formed in the power supply side accommodation part 21 and the load side accommodation part 22, respectively, and are fixed by means described later. The power supply side accommodating part 21 and the load side accommodating part 22 are fixed. A terminal cover 100 shown in FIG. 4 or the like is attached to the front side of the instrument terminal portion 2 in which the power supply side and load side separation terminals 11 and 12 are housed.

端子カバー100は、裏面に、電源側分離端子11と負荷側分離端子12を計器端子部2に固定するための押込突起101を備えることができ、図4(A)(B)及び図5は、押込突起101を備える端子カバー100を示す。図4(A)は、端子カバー100の正面図であり、押込突起101の位置が破線で示されている。図4(B)は、端子カバー100の側面図であり、図5は、端子カバー100を、その裏面側から見た斜視図である。押込突起101は、端子カバー100の裏面に対して実質的に垂直方向に延びている。後述するように、押込突起101は、据置型分離端子1を計器端子部2に固定する手段として有用であるが、なくてもよい。端子カバー100に押込突起101を形成する場合、据置型分離端子1の電源側分離端子11と負荷側分離端子12の前面には、それぞれ、図6に示すような、押込突起101を受け入れるための突起受け入れ溝501、502が設けられる。端子カバー100を計器端子部2に取り付ける際、電源側及び負荷側分離端子11、12の電源側及び負荷側収容部21、22への差込が不完全であると、電源側分離端子11と負荷側分離端子12は、突起受け入れ溝501、502に受け入れられた押込突起101によって押され、電源側収容部21と負荷側収容部22内へ、それぞれ、押し込まれる。これにより、電源側及び負荷側分離端子11、12が計器端子部2内に確実に差し込まれた状態で、端子カバー100を計器端子部2に装着することができる。図4及び図5において、102は、端子カバー装着用ねじを示す。端子カバー装着用ねじ102は、計器端子部2に設けられた端子カバー装着用ねじ穴103(図1、図2)にねじ込まれる。図1及び図2において、104は、計器端子部2を計器取り付け板(図示省略)に固定するための計器固定用ねじ穴である。計器300は、計器取り付け板を介して建造物の壁面等の所定位置に設置される。尚、400は、試験用端子である。   The terminal cover 100 can be provided with a pushing protrusion 101 for fixing the power supply side separation terminal 11 and the load side separation terminal 12 to the instrument terminal portion 2 on the back surface. FIGS. 4 (A), 4 (B), and FIG. The terminal cover 100 provided with the pushing protrusion 101 is shown. FIG. 4A is a front view of the terminal cover 100, and the position of the pushing protrusion 101 is indicated by a broken line. FIG. 4B is a side view of the terminal cover 100, and FIG. 5 is a perspective view of the terminal cover 100 as viewed from the back side. The pushing protrusion 101 extends in a substantially vertical direction with respect to the back surface of the terminal cover 100. As will be described later, the pushing protrusion 101 is useful as a means for fixing the stationary separation terminal 1 to the instrument terminal portion 2, but may not be necessary. When the pushing protrusion 101 is formed on the terminal cover 100, the front surface of the power supply side separation terminal 11 and the load side separation terminal 12 of the stationary separation terminal 1 are for receiving the pushing protrusion 101 as shown in FIG. Protrusion receiving grooves 501 and 502 are provided. When the terminal cover 100 is attached to the instrument terminal portion 2, if the insertion of the power source side and load side separation terminals 11 and 12 into the power source side and load side accommodating portions 21 and 22 is incomplete, the power source side separation terminal 11 and The load side separation terminal 12 is pushed by the push projection 101 received in the projection receiving grooves 501 and 502, and is pushed into the power supply side accommodating portion 21 and the load side accommodating portion 22, respectively. Thereby, the terminal cover 100 can be attached to the instrument terminal portion 2 in a state where the power source side and load side separation terminals 11 and 12 are securely inserted into the instrument terminal portion 2. 4 and 5, reference numeral 102 denotes a terminal cover mounting screw. The terminal cover mounting screw 102 is screwed into a terminal cover mounting screw hole 103 (FIGS. 1 and 2) provided in the instrument terminal portion 2. In FIGS. 1 and 2, reference numeral 104 denotes an instrument fixing screw hole for fixing the instrument terminal 2 to an instrument mounting plate (not shown). The instrument 300 is installed at a predetermined position such as a wall surface of a building via an instrument mounting plate. Reference numeral 400 denotes a test terminal.

計器300の壁面等への取り付け後、電源側及び負荷側分離端子11、12は、接続された配電線の重みで下方へ抜け落ちる可能性がある。図7に、そのような電源側及び負荷側分離端子11、12の計器端子部2からの抜け落ちを防止する、凹凸による脱落防止機構の例を示す。具体的には、計器端子部2の電源側収容部21及び負荷側収容部22を形成する側壁を、それぞれ、電源側及び負荷側収容部21、22の内側に向けて部分的に突出させて段部105を形成し、段部105に係合可能な係合部106を各分離端子11、12の側面に形成する。図7の例では、電源側分離端子11と負荷側分離端子12のそれぞれについて2箇所ずつ、計4箇所に脱落防止機構を設けている。しかし、このような脱落防止機構は、後述する計器端子部2の接続部のプラグ形状によっては、不要である。   After the instrument 300 is attached to the wall surface or the like, the power source side and load side separation terminals 11 and 12 may fall out downward due to the weight of the connected distribution lines. FIG. 7 shows an example of a drop-off prevention mechanism due to unevenness that prevents the power supply side and load side separation terminals 11 and 12 from falling off from the instrument terminal portion 2. Specifically, the side walls forming the power source side accommodating portion 21 and the load side accommodating portion 22 of the instrument terminal portion 2 are partially protruded toward the inside of the power source side and the load side accommodating portions 21, 22 respectively. A step portion 105 is formed, and an engaging portion 106 that can be engaged with the step portion 105 is formed on the side surface of each separation terminal 11, 12. In the example of FIG. 7, dropout prevention mechanisms are provided at a total of four locations, two for each of the power source side separation terminal 11 and the load side separation terminal 12. However, such a drop-off prevention mechanism is not necessary depending on the plug shape of the connecting portion of the meter terminal portion 2 described later.

電源側分離端子11と負荷側分離端子12の計器端子部2への固定手段としては、上記のような端子カバー100の押込突起101の他、例えば、ねじ止めによる固定や、スナップフィット(電源側及び負荷側分離端子11、12または電源側及び負荷側収容部21、22のいずれかに弾性的な締結部を設ける)を行なうことができる。ねじ止めまたはスナップフィットを行なう場合も、上述の脱落防止機構(段部105と係合部106)はなくてよい。   As a means for fixing the power supply side separation terminal 11 and the load side separation terminal 12 to the instrument terminal portion 2, in addition to the pushing projection 101 of the terminal cover 100 as described above, for example, fixing by screwing, snap fitting (power supply side) And the load side separation terminals 11 and 12 or the power supply side and load side accommodating portions 21 and 22 are provided with an elastic fastening portion). Even when screwing or snap fitting is performed, the above-described drop-off prevention mechanism (the step portion 105 and the engaging portion 106) may be omitted.

このように、本実施形態の据置型分離端子1は、計器の計器端子部2内に受け入れられた状態で設置されるので、従来の計器端子部に外付けされる据置端子に比べて、小さい設置面積で使用することができる。また、計器交換の際には、計器に比べて劣化部品が少ない電源側及び負荷側分離端子11、12を計器端子部2から分離することができるので、電源側及び負荷側分離端子11、12を、計器の使用期間に影響されずに長期に亘って使用することができる。   As described above, the stationary separation terminal 1 of the present embodiment is installed in a state of being received in the instrument terminal portion 2 of the meter, and thus is smaller than the stationary terminal externally attached to the conventional instrument terminal portion. Can be used in the installation area. In addition, when the instrument is replaced, the power source side and load side separation terminals 11 and 12 with less deteriorated parts than the instrument can be separated from the instrument terminal portion 2, so that the power source side and load side separation terminals 11 and 12 can be separated. Can be used over a long period of time without being affected by the period of use of the instrument.

電源側分離端子11と負荷側分離端子12の各々は、実質的に矩形ブロック状の本体11a、12aを備えており、本体11a、12aの下面には、配電線を挿入するための電線挿入穴30が開口している(図3等)。本実施形態では、配電線は単相3線式であり、図1及び図2に示すように、電源側分離端子11の3つの電線挿入穴30に配電線1S、2S、3Sが挿入され、負荷側分離端子12の3つの電線挿入穴に配電線3L、2L、1Lが、それぞれ、挿入される。尚、配電線を示す符号1S、2S、3Sは、電源側の配電線を意味し、3L、2L、1Lは、負荷側の配電線を意味する(JIS C 1210)。各分離端子11、12の本体11a、12aの前面には、開口32が形成されており、各電線挿入穴30に挿入された配電線1S、2S、3S、3L、2L、1Lは、電線接続ねじ31を開口32の内部のねじ穴(符号省略)に締め付けることによって、電源側及び負荷側分離端子11、12の導通部分に固定される。図8は、計器端子部2に取り付けられた据置型分離端子1の内部構造を電源側分離端子11を例として示す、図1のA―A線に沿って見た部分断面図である。図8に示すように、電源側分離端子11の本体11aの前面における開口32の上部には、短絡装置接続部33が形成されており、短絡装置接続部33は、後述する無停電での計器交換時に、短絡装置に接続される。電源側分離端子11の本体11aの背面(図8における右側の面)には、後述する分離端子側接続部34が形成され、各分離端子側接続部34は、それぞれ、対応する計器側接続部24に接続される。本実施形態では、計器側接続部24は凸部を形成しており、分離端子側接続部34は凹部を形成している。図8に示すように、電源側分離端子11の本体11aの内部では、各配電線に対応する導通部分600が、電線挿入穴30、短絡装置接続部33及び分離端子側接続部34の間を連続的に延びている。尚、図8の断面図では、電源側分離端子11の導通部分と計器端子部2の導通部分を互いに同一のハッチングで示し、電源側分離端子11の非導通部分と計器端子部2の非導通部分を、これとは異なる、互いに同一のハッチングで示している(図10及び図11における負荷側分離端子12及び計器端子部2についても同様)。 Each of the power supply side separation terminal 11 and the load side separation terminal 12 includes a substantially rectangular block-shaped main body 11a, 12a, and an electric wire insertion hole for inserting a distribution line on the lower surface of the main body 11a, 12a. 30 is open (FIG. 3 etc.). In this embodiment, the distribution line is a single-phase three-wire system, and as shown in FIGS. 1 and 2, the distribution lines 1S, 2S, 3S are inserted into the three wire insertion holes 30 of the power supply side separation terminal 11, Distribution lines 3L, 2L, and 1L are inserted into the three wire insertion holes of the load-side separation terminal 12, respectively. Reference numerals 1S, 2S, and 3S indicating distribution lines mean power supply side distribution lines, and 3L, 2L, and 1L mean load side distribution lines (JIS C 1210). Openings 32 are formed on the front surfaces of the main bodies 11a and 12a of the separation terminals 11 and 12, and the distribution lines 1S, 2S, 3S, 3L, 2L, and 1L inserted into the wire insertion holes 30 are connected to the wires. By tightening the screw 31 into a screw hole (reference number omitted) inside the opening 32, the screw 31 is fixed to the conduction portion of the power source side and load side separation terminals 11 and 12. FIG. 8 is a partial cross-sectional view of the internal structure of the stationary separation terminal 1 attached to the instrument terminal portion 2 taken along line AA in FIG. As shown in FIG. 8, a short-circuit device connection portion 33 is formed above the opening 32 in the front surface of the main body 11 a of the power supply side separation terminal 11, and the short-circuit device connection portion 33 is an instrument for uninterruptible power described later. At the time of replacement, it is connected to the short-circuit device. A separation terminal side connection portion 34 to be described later is formed on the back surface (right side surface in FIG. 8) of the main body 11a of the power supply side separation terminal 11, and each separation terminal side connection portion 34 has a corresponding instrument side connection portion. 24. In this embodiment, the instrument side connection part 24 forms a convex part, and the separation terminal side connection part 34 forms a concave part. As shown in FIG. 8, in the main body 11 a of the power supply side separation terminal 11, the conduction portion 600 corresponding to each distribution line is between the wire insertion hole 30, the short-circuit device connection portion 33, and the separation terminal side connection portion 34. It extends continuously. In the cross-sectional view of FIG. 8, the conductive portion of the power supply side separation terminal 11 and the conductive portion of the instrument terminal portion 2 are shown by the same hatching, and the nonconductive portion of the power supply side separation terminal 11 and the nonconductive portion of the instrument terminal portion 2 are shown. The parts are indicated by the same hatching different from this (the same applies to the load side separation terminal 12 and the instrument terminal 2 in FIGS. 10 and 11).

上述したように、本発明の据置型分離端子1は、電源側分離端子11と負荷側分離端子12とに分割されている。これにより、送電の停止停解時は、負荷側分離端子12によって一括して着脱すべき配電線を着脱できる。従って、着脱すべき配電線を間違える虞がなく確実に送電の停止停解作業を行うことができる。また、スイッチやカム機構等の複雑な構造を用いることなく、負荷側分離端子12を計器端子部2から抜き差しするだけで送電の停止停解作業を行うことができるため、安価な方法で送電の停止停解作業を行うことができる。   As described above, the stationary separation terminal 1 of the present invention is divided into the power supply side separation terminal 11 and the load side separation terminal 12. Thereby, the distribution line which should be attached or detached collectively by the load side isolation | separation terminal 12 can be attached or detached at the time of stoppage stop of power transmission. Therefore, there is no risk of mistaken distribution lines to be attached and detached, and the power transmission stop / cancel operation can be performed reliably. Further, since the power transmission stop / stop operation can be performed simply by inserting / removing the load side separation terminal 12 from / to the instrument terminal portion 2 without using a complicated structure such as a switch or a cam mechanism, Stop and stop work can be done.

[電線挿入穴の配列について]
本実施形態では、計器端子部2内に受け入れられた電源側分離端子11及び負荷側分離端子12における、配電線1S、2S、3S、3L、2L、1Lを受け入れる電線挿入穴30は、計器端子部2を横断する方向に沿って横一列に配置されている。具体的には、図1に示すように、電源側分離端子11及び負荷側分離端子12の電線挿入穴30は、左から右へ、それぞれ、配電線1S、2S、3S、3L、2L、1Lの配列に対応するように、壁面等に設置された計器端子部2を横断する方向に沿って横一列に並んで配置されている。このような電線挿入穴30に接続される配電線1S、2S、3S、3L、2L、1Lの配列は、従来から採用されている電力量計の端子部における配電線の配列と同じである。
[About wire insertion hole arrangement]
In the present embodiment, the wire insertion hole 30 for receiving the distribution lines 1S, 2S, 3S, 3L, 2L, and 1L in the power supply side separation terminal 11 and the load side separation terminal 12 received in the meter terminal portion 2 is a meter terminal. They are arranged in a horizontal row along the direction crossing the portion 2. Specifically, as shown in FIG. 1, the electric wire insertion holes 30 of the power supply side separation terminal 11 and the load side separation terminal 12 are distributed from the left to the right, respectively, from the distribution lines 1S, 2S, 3S, 3L, 2L, 1L. In order to correspond to these arrangements, they are arranged in a horizontal row along the direction crossing the instrument terminal portion 2 installed on the wall surface or the like. The arrangement of the distribution lines 1S, 2S, 3S, 3L, 2L, and 1L connected to the electric wire insertion hole 30 is the same as the arrangement of the distribution lines in the terminal portion of the watt-hour meter that has been conventionally employed.

このことは、特開平7−198753号の端子ブロックにおける配電線の配列と対照的である。上記したように、特開平7−198753号では、端子ブロックの電線側で、同極の電源側電線と負荷側電線(1Sと1L、2Sと2L、3Sと3L)が前後に二段重ねに配列されており、電線挿入穴も同極同士が前後に並んで配置されている。   This is in contrast to the arrangement of distribution lines in the terminal block of Japanese Patent Laid-Open No. 7-198753. As described above, in Japanese Patent Application Laid-Open No. 7-198753, on the wire side of the terminal block, the same-polarity power-side wire and load-side wire (1S and 1L, 2S and 2L, 3S and 3L) are stacked in two stages in the front and rear direction. The electric wire insertion holes are also arranged with the same poles side by side.

本発明では、電源側分離端子11及び負荷側分離端子12に接続される配電線の配列が、従来の計器端子部における配電線の配列と同じである。このため、上記特開平7−198753号の端子ブロックにおけるような、前後二段重ねの配列と異なり、建造物に設置された既存の長さの配電線に容易に接続することができる。   In the present invention, the arrangement of the distribution lines connected to the power supply side separation terminal 11 and the load side separation terminal 12 is the same as the arrangement of the distribution lines in the conventional instrument terminal portion. For this reason, unlike the two-tiered arrangement as in the terminal block disclosed in Japanese Patent Laid-Open No. Hei 7-198753, it can be easily connected to an existing distribution line installed in a building.

[接続部の形状について]
本実施形態では、計器端子部2と電源側及び負荷側分離端子11、12との接続は、プラグ式接続により行われる。本実施形態においては、図8に示されるように、電源側分離端子11及び負荷側分離端子12に接続される計器側接続部24は凸部を形成しており、計器端子部2に接続される分離端子側接続部34は凹部を形成している。図9(A)(B)は、計器側接続部24と分離端子側接続部34の形状の例を示す概略部分斜視図であり、電源側分離端子11の場合を例として示す。理解の容易のため、図9(A)(B)では、電源側分離端子の本体11aの前面に形成される短絡装置接続部33は省略されている。また、分離端子側接続部34を形成する凹部及び計器側接続部24の一部が破線で示されている。
[About the shape of the connection part]
In the present embodiment, the connection between the instrument terminal portion 2 and the power supply side and load side separation terminals 11 and 12 is performed by a plug-type connection. In the present embodiment, as shown in FIG. 8, the instrument side connection portion 24 connected to the power source side separation terminal 11 and the load side separation terminal 12 forms a convex portion and is connected to the instrument terminal portion 2. The separation terminal side connection portion 34 is formed with a recess. FIGS. 9A and 9B are schematic partial perspective views showing examples of the shapes of the instrument side connection portion 24 and the separation terminal side connection portion 34, and show the case of the power supply side separation terminal 11 as an example. For ease of understanding, in FIGS. 9A and 9B, the short-circuit device connection portion 33 formed on the front surface of the main body 11a of the power supply side separation terminal is omitted. Moreover, the recessed part which forms the isolation | separation terminal side connection part 34, and a part of instrument side connection part 24 are shown with the broken line.

図9(A)は、計器側接続部24が丸型プラグを形成する例であり、図9(B)は、計器側接続部24が平型プラグを形成する例である。図9(A)の例では、電源側分離端子11を計器端子部2の正面から電源側収容部21に向けて嵌め込むことにより、分離端子側接続部34と計器側接続部24が接続される。図9(B)の例では、電源側分離端子11を計器端子部2の正面又は下方から電源側収容部21に向けて嵌め込むことにより、分離端子側接続部34と計器側接続部24が接続される。尚、図9(A)では、丸型プラグは、計器端子部2の後壁から電源側収容部21内に向けて突出するように形成されているが、丸型プラグの位置はこれには限られず、例えば、計器端子部2の上壁から電源側収容部21内に突出するように形成することもできる。この場合、電源側分離端子11は、電源側収容部21の下部の開口端から電源側収容部21内に嵌め込まれる。しかし、丸型プラグを、図9(A)の位置に形成することにより、電源側分離端子11が配電線によって下方に引っ張られても抜け落ちることがないので、上記した脱落防止機構(図7)を不要とすることができる。   FIG. 9A is an example in which the instrument side connection portion 24 forms a round plug, and FIG. 9B is an example in which the instrument side connection portion 24 forms a flat plug. In the example of FIG. 9A, the separation terminal side connection portion 34 and the instrument side connection portion 24 are connected by fitting the power supply side separation terminal 11 from the front of the instrument terminal portion 2 toward the power supply side accommodation portion 21. The In the example of FIG. 9 (B), the power supply side separation terminal 11 is fitted from the front or the lower side of the instrument terminal portion 2 toward the power supply side accommodating portion 21 so that the separation terminal side connection portion 34 and the instrument side connection portion 24 are connected. Connected. In FIG. 9A, the round plug is formed so as to protrude from the rear wall of the instrument terminal portion 2 into the power supply side accommodating portion 21, but the position of the round plug is For example, it may be formed so as to protrude from the upper wall of the meter terminal portion 2 into the power supply side accommodating portion 21. In this case, the power source side separation terminal 11 is fitted into the power source side housing portion 21 from the lower opening end of the power source side housing portion 21. However, since the round plug is formed at the position shown in FIG. 9A, the power supply side separation terminal 11 will not fall out even when pulled down by the distribution line. Can be made unnecessary.

上記のように、計器側接続部24を凸型、分離端子側接続部34を凹型に形成することにより、後述する計器交換作業時に電源側分離端子11を計器端子部2から分離した際、電源側分離端子11の充電部が露出しないため、作業者の感電等の虞なく容易に作業することができる。図9(A)(B)は、電源側分離端子11を例としているが、負荷側分離端子12にも同様の構成を適用することにより、上記の効果を得ることができる。さらに、負荷側分離端子12については、後述する工夫を行うことにより、送電の停止停解時に有利な効果を得ることができる。   As described above, when the instrument side connection portion 24 is formed in a convex shape and the separation terminal side connection portion 34 is formed in a concave shape, when the power supply side separation terminal 11 is separated from the instrument terminal portion 2 during the meter replacement operation described later, Since the charging portion of the side separation terminal 11 is not exposed, the operator can easily work without fear of electric shock or the like. 9A and 9B exemplify the power supply side separation terminal 11, the above effect can be obtained by applying the same configuration to the load side separation terminal 12. Furthermore, with respect to the load side separation terminal 12, an advantageous effect can be obtained at the time of stopping and stopping the power transmission by performing the device described later.

即ち、単相3線式に適用される本実施形態では、負荷側分離端子12が計器端子部2に接続される際、中性線2Lが他の配電線1L、3Lよりも先に計器端子部2に接続され、負荷側分離端子12が計器端子部2から分離される際、中性線2Lが他の配電線1L、3Lよりも後に計器端子部2から分離されるようになされている。これにより、送電の停止停解時に線間の電圧のバランスが崩れ、負荷に接続された機器が過電圧によって破損する虞がない。   That is, in this embodiment applied to a single-phase three-wire system, when the load-side separation terminal 12 is connected to the instrument terminal portion 2, the neutral wire 2L is the instrument terminal before the other distribution lines 1L and 3L. When the load-side separation terminal 12 is separated from the instrument terminal unit 2 when connected to the unit 2, the neutral wire 2L is separated from the instrument terminal unit 2 after the other distribution lines 1L and 3L. . As a result, the balance of the voltage between the lines is lost when the power transmission is stopped and stopped, and there is no possibility that the device connected to the load is damaged by the overvoltage.

この構成の具体例を図10及び図11に示す。図10(A)(B)は、負荷側分離端子12の分離端子側接続部(凹部)34を工夫した例であり、図11(A)(B)は、計器側接続部(凸部)24を工夫した例である。図10及び図11は、計器側接続部24が、図9(A)に示した丸型プラグである場合を示しているが、同様の構成が、図9(B)の平型プラグにも適用可能である。尚、図10及び図11において、配電線の図示は省略されている。   Specific examples of this configuration are shown in FIGS. 10 (A) and 10 (B) are examples in which the separation terminal side connection part (concave part) 34 of the load side separation terminal 12 is devised, and FIGS. 11 (A) and 11 (B) are instrument side connection parts (convex part). This is an example in which 24 is devised. 10 and 11 show a case where the instrument side connection portion 24 is the round plug shown in FIG. 9A, but the same configuration is applied to the flat plug shown in FIG. 9B. Applicable. In addition, in FIG.10 and FIG.11, illustration of a distribution line is abbreviate | omitted.

図10及び図11は、分離端子側接続部(凹部)34と計器側接続部(凸部)24が、接続の前後において、直線状に(図10及び図11における上下方向に)整列させられた時の、負荷側分離端子12及び計器端子部2の負荷側収容部22付近の概略断面図である。図10(A)及び図11(A)は、図1のB−B線に沿って見た負荷側分離端子12及び計器端子部2の断面図、図10(B)及び図11(B)は、図1のC−C線に沿って見た負荷側分離端子12及び計器端子部2の断面図である。尚、図10(A)と図11(A)とは実質的に同一の図である。図10及び図11に示される具体例の特徴は、主に図10(B)及び図11(B)によって示されている。   10 and 11, the separation terminal side connection part (concave part) 34 and the instrument side connection part (convex part) 24 are aligned linearly (in the vertical direction in FIGS. 10 and 11) before and after connection. It is a schematic sectional drawing of the load side accommodating part 22 vicinity of the load side isolation | separation terminal 12 and the instrument terminal part 2 at the time. 10 (A) and 11 (A) are cross-sectional views of the load-side separation terminal 12 and the instrument terminal portion 2 as viewed along line BB in FIG. 1, and FIG. 10 (B) and FIG. 11 (B). These are sectional drawings of the load side isolation | separation terminal 12 and the instrument terminal part 2 seen along CC line of FIG. Note that FIG. 10A and FIG. 11A are substantially the same. The features of the specific example shown in FIGS. 10 and 11 are mainly shown by FIGS. 10 (B) and 11 (B).

図10(B)の例では、中性線2Lに対応する分離端子側接続部(凹部)34の導通部分cが、他の配電線1L、3Lに対応する分離端子側接続部(凹部)34の導通部分c´と比較して、凹部34の開口端(図10(B)における本体12aの下面)近傍まで延びるように、導通部分cと導通部分c´の長さに差D1が設けられている。この差D1を十分に確保することにより、負荷側分離端子12が、負荷側収容部22に対して真正面(即ち、図10(A)(B)に示される、各分離端子側接続部(凹部)34が各計器側接続部(凸部)24に対して一直線状に整列する位置)からでなく、斜め方向から挿入されても、中性線2Lに対応する導通部分cは、他の配電線1L、3Lに対応する導通部分c´よりも先に計器側接続部24と接触する。負荷側分離端子12を計器端子部2から外すときは、中性線2Lに対応する導通部分cが、導通部分c´よりも後に計器側接続部24から分離される。従って、送電の停止停解時に、中性線2Lが接続されていない状態で他の配電線1L、3Lが接続されることを避けることができ、線間の電圧のバランスが崩れ、負荷に接続された機器が過電圧によって破損する虞がない。   In the example of FIG. 10B, the conduction portion c of the separation terminal side connection portion (concave portion) 34 corresponding to the neutral wire 2L is separated from the separation terminal side connection portion (concave portion) 34 corresponding to the other distribution lines 1L, 3L. Compared with the conductive portion c ′, a difference D1 is provided in the length between the conductive portion c and the conductive portion c ′ so as to extend to the vicinity of the opening end of the recess 34 (the lower surface of the main body 12a in FIG. 10B). ing. By ensuring this difference D1 sufficiently, the load-side separation terminal 12 is in front of the load-side accommodating portion 22 (that is, each separation-terminal-side connection portion (recessed portion) shown in FIGS. 10A and 10B). ) 34 is inserted from an oblique direction rather than from the position where each of the instrument side connection parts (convex parts) 24 is aligned), the conductive portion c corresponding to the neutral line 2L is not arranged in the other direction. It contacts with the instrument side connection part 24 before the conduction | electrical_connection part c 'corresponding to the electric wires 1L and 3L. When the load side separation terminal 12 is removed from the instrument terminal portion 2, the conducting portion c corresponding to the neutral wire 2L is separated from the instrument side connecting portion 24 after the conducting portion c ′. Therefore, it is possible to avoid connecting the other distribution lines 1L and 3L when the neutral line 2L is not connected at the time of stoppage of power transmission, and the voltage balance between the lines is lost and the load is connected to the load. There is no risk of damage to the equipment being damaged by overvoltage.

図11(B)の例の場合、中性線2Lに対応する計器側接続部(凸部)24の長さ(換言すれば、図11(B)に示される負荷側収容部22の底面からの高さ)が、他の配電線1L、3Lに対応する計器側接続部(凸部)24よりもD2だけ大きい。一方、負荷側分離端子12の全ての分離端子側接続部(凹部)34の導通部分c´´の端部の位置(図11(B)における本体12aの下面側の位置)は、いずれも同じである。この構成により、接続時、大きな長さを有する計器側接触部(凸部)24が、これより小さい長さの計器側接触部(凸部)24よりも先に導通部分c´´と接触する。また、負荷側分離端子12を計器端子部2から外すときは、中性線2Lに対応する導通部分c´´が、他の導通部分c´´より後に計器側接続部24から分離される。従って、図10(B)の場合と同様に、送電の停止停解時に、中性線2Lが接続されていない状態で他の配電線1L、3Lが接続されることを避けることができ、線間の電圧のバランスが崩れ、負荷に接続された機器が過電圧によって破損する虞がない。   In the case of the example of FIG. 11B, the length of the instrument side connection part (convex part) 24 corresponding to the neutral wire 2L (in other words, from the bottom surface of the load side accommodating part 22 shown in FIG. 11B). ) Is larger by D2 than the instrument side connection portions (convex portions) 24 corresponding to the other distribution lines 1L and 3L. On the other hand, the positions of the end portions of the conduction portions c ″ of all the separation terminal side connection portions (recesses) 34 of the load side separation terminals 12 (the positions on the lower surface side of the main body 12a in FIG. 11B) are all the same. It is. With this configuration, when connected, the instrument-side contact portion (convex portion) 24 having a large length comes into contact with the conducting portion c ″ before the instrument-side contact portion (convex portion) 24 having a smaller length. . Further, when the load side separation terminal 12 is removed from the instrument terminal portion 2, the conduction portion c ″ corresponding to the neutral wire 2L is separated from the instrument side connection portion 24 after the other conduction portion c ″. Accordingly, as in the case of FIG. 10B, it is possible to avoid connecting the other distribution lines 1L and 3L in a state where the neutral line 2L is not connected at the time of stopping and stopping the power transmission. The voltage balance between the two is lost, and there is no possibility that the device connected to the load is damaged by the overvoltage.

図11(B)の例では、さらに、負荷側分離端子12の導通部分c´´と凹部34の開口端(図11(B)における本体12aの下面)との間に所定の長さを有する、非導通部分dが設けられている。これにより、負荷側分離端子12が負荷側収容部22に斜め方向から挿入された場合、計器側接続部(凸部)24が分離端子側接続部(凹部)34の非導通部分dに沿って移動し、この間に負荷側分離端子12の姿勢が矯正され(各分離端子側接続部(凹部)34の軸線が各計器側接続部(凸部)24の軸線に対して一直線上に整列する位置となり)、従って、中性線2Lに対応する導通部分c´´が、他の配電線1L、3Lに対応する導通部分c´´よりも先に計器側接続部24と接触する。こうして、線間の電圧のバランスが崩れることを一層確実に防止することができる。   In the example of FIG. 11B, a predetermined length is further provided between the conductive portion c ″ of the load-side separation terminal 12 and the open end of the recess 34 (the lower surface of the main body 12a in FIG. 11B). A non-conductive portion d is provided. Thereby, when the load side separation terminal 12 is inserted into the load side accommodating portion 22 from an oblique direction, the instrument side connection portion (convex portion) 24 extends along the non-conductive portion d of the separation terminal side connection portion (concave portion) 34. During this time, the posture of the load side separation terminal 12 is corrected (the position where the axis of each separation terminal side connection portion (concave portion) 34 is aligned with the axis of each instrument side connection portion (convex portion) 24 Therefore, the conduction portion c ″ corresponding to the neutral wire 2L comes into contact with the instrument side connection portion 24 before the conduction portions c ″ corresponding to the other distribution lines 1L and 3L. Thus, it is possible to more reliably prevent the voltage balance between the lines from being lost.

尚、図10及び図11は、いずれも負荷側分離端子12のみについて示されている。図10及び図11に示す例は、負荷側分離端子12に適用した場合、後述する送電の停止停解作業時に特に有利な効果が得られる。しかし、電源側分離端子11にも適用することができる。   10 and 11 show only the load side separation terminal 12. When the example shown in FIGS. 10 and 11 is applied to the load side separation terminal 12, a particularly advantageous effect can be obtained at the time of stopping and stopping the power transmission described later. However, the present invention can also be applied to the power supply side separation terminal 11.

[分離端子本体の外形について]
本発明では、電源側分離端子11と負荷側分離端子12は、互いに異なる外形を有することができる。例えば、図12に示すように電源側分離端子11の本体11aの左上角部と、負荷側分離端子12の本体12aの右上角部を、図12に示すように湾曲させるか、又は面取り加工することができる。この場合、電源側及び負荷側分離端子11、12の形状に対応させて、電源側収容部21と負荷側収容部22の形状も変更する。これにより、電源側分離端子11と負荷側分離端子12の計器端子部2に対する接続の誤りを防止することができる。尚、電源側分離端子11と負荷側分離端子12の外形の変更は、上記の例に限られない。計器端子部2内に取り付けられる向きに置かれたときの電源側分離端子11と負荷側分離端子12の外形が、同一でなければよい。
[External shape of separation terminal body]
In the present invention, the power supply side separation terminal 11 and the load side separation terminal 12 can have different external shapes. For example, as shown in FIG. 12, the upper left corner of the main body 11a of the power supply side separation terminal 11 and the upper right corner of the main body 12a of the load side separation terminal 12 are curved or chamfered as shown in FIG. be able to. In this case, the shapes of the power source side accommodating portion 21 and the load side accommodating portion 22 are also changed in accordance with the shapes of the power source side and load side separating terminals 11 and 12. Thereby, the connection error with respect to the instrument terminal part 2 of the power source side separation terminal 11 and the load side separation terminal 12 can be prevented. In addition, the change of the external shape of the power supply side isolation | separation terminal 11 and the load side isolation | separation terminal 12 is not restricted to said example. The external shape of the power source side separation terminal 11 and the load side separation terminal 12 when placed in the orientation to be mounted in the instrument terminal portion 2 may not be the same.

[短絡装置に対する接続部について]
図1乃至図3等に示すように、電源側及び負荷側分離端子11、12の前面における開口32の上部には、短絡装置接続部33が形成されている。後述するように、計器端子部2は、無停電の計器交換時に短絡装置に接続される。短絡装置は、電源側配電線と負荷側配電線の同極同士(1Sと1L、2Sと2L、3Sと3L)を短絡させるものである。本実施形態では、短絡装置の計器端子部2に対する接続部は凸部を形成し、短絡装置接続部33は、この凸部を電気的に接続可能に受け入れる凹部を形成している。従って、計器端子部2に対する分離端子側接続部34と同様、電源側及び負荷側分離端子11、12の充電部である短絡装置接続部33もまた、分離端子11、12の本体外部に露出されることがない。換言すれば、電源側分離端子11、負荷側分離端子12のいずれも、本体外部に突出し露出される充電部を有しない。
[Connection to short circuit device]
As shown in FIG. 1 to FIG. 3 and the like, a short-circuiting device connecting portion 33 is formed in the upper portion of the opening 32 in the front surface of the power source side and load side separation terminals 11 and 12. As will be described later, the instrument terminal unit 2 is connected to the short-circuit device when the instrument is uninterrupted. A short circuit device short-circuits the same polarity (1S and 1L, 2S and 2L, 3S and 3L) of a power supply side distribution line and a load side distribution line. In this embodiment, the connection part with respect to the meter terminal part 2 of a short circuit apparatus forms a convex part, and the short circuit apparatus connection part 33 forms the recessed part which receives this convex part so that electrical connection is possible. Therefore, similarly to the separation terminal side connection portion 34 for the instrument terminal portion 2, the short-circuit device connection portion 33 which is a charging portion of the power source side and load side separation terminals 11 and 12 is also exposed to the outside of the main body of the separation terminals 11 and 12. There is nothing to do. In other words, neither the power source side separation terminal 11 nor the load side separation terminal 12 has a charging part that protrudes and is exposed outside the main body.

電源側分離端子11、負荷側分離端子12は、例えば、導通部分上に非導通部分を型成形することにより一体化して製造することができる。また、非導通部分を二分割(例えば図10及び図11に示す分離端子の非導通部分を上下に分割)して製作し、導通部分をこれらの間に挟んで固定するようにして製造することもできる。   The power supply side separation terminal 11 and the load side separation terminal 12 can be integrally manufactured by molding a non-conduction part on a conduction part, for example. Further, the non-conductive part is manufactured by dividing it into two parts (for example, the non-conductive part of the separation terminal shown in FIGS. 10 and 11 is divided vertically), and the conductive part is sandwiched and fixed between them. You can also.

[無停電による計器の交換方法]
図15(A)(B)は、本発明の据置型分離端子1を用いた、無停電による計器の交換方法を説明する図である。無停電による計器の交換方法には、例えば図13及び図14に示すような短絡装置40が用いられる。図13(A)、(B)、及び図14は、それぞれ、短絡装置40の正面図、側面図、斜視図である。短絡装置40は、電源側配電線と負荷側配電線の同極同士(1Sと1L、2Sと2L、3Sと3L)を短絡板(図に破線で示す)により内部で短絡させている。
[How to change the instrument due to uninterruptible power]
15 (A) and 15 (B) are diagrams for explaining a method for exchanging a meter due to uninterruptible power using the stationary separation terminal 1 of the present invention. For example, a short-circuit device 40 as shown in FIGS. FIGS. 13A, 13B, and 14 are a front view, a side view, and a perspective view of the short-circuit device 40, respectively. In the short-circuit device 40, the same polarity (1S and 1L, 2S and 2L, 3S and 3L) of the power supply side distribution line and the load side distribution line are internally short-circuited by a short-circuit plate (shown by a broken line in the figure).

計器交換時は、短絡装置40における、計器端子部2に対する接続部41(本実施形態では棒端子601の棒部)を、電源側及び負荷側分離端子11、12の前面に形成された短絡装置接続部33の穴に挿入する。図示の例では、棒端子601としてねじ構造の棒端子が用いられ、短絡装置40の接続部41である棒部にねじが形成されている。この場合、短絡装置接続部33の穴には、これに対応するねじ部が形成される。これにより、短絡装置40の電源側及び負荷側分離端子11、12への接続と固定の両方を、接続部41によって行うことができる。しかし、ねじ構造でない棒端子を用いることもでき、その場合は、ねじ止めまたはスナップフィット等の別途の固定手段によって、短絡装置40を電源側及び負荷側分離端子11、12に固定する。計器の定格電流が小電流の場合は、いずれの固定方法も使用できるが、計器の定格電流が大電流の場合は、接続部の発熱を抑えるため、ねじ構造の接続部41による固定方法を使用することが好ましい。     At the time of exchange of the instrument, the short circuit device 40 has a connection portion 41 (the rod portion of the rod terminal 601 in this embodiment) connected to the instrument terminal portion 2 on the front surface of the power source side and load side separation terminals 11 and 12. Insert into the hole of the connecting portion 33. In the example shown in the figure, a bar terminal having a screw structure is used as the bar terminal 601, and a screw is formed on the bar portion that is the connection portion 41 of the short-circuit device 40. In this case, a screw portion corresponding to the hole is formed in the hole of the short-circuit device connecting portion 33. Thereby, the connection part 41 can perform both connection and fixation to the power source side and the load side separation terminals 11 and 12 of the short circuit device 40. However, it is also possible to use a bar terminal having no screw structure. In this case, the short-circuit device 40 is fixed to the power supply side and load side separation terminals 11 and 12 by separate fixing means such as screwing or snap fitting. When the rated current of the meter is small, any fixing method can be used. However, when the rated current of the meter is large current, the fixing method by the screw structure connecting portion 41 is used to suppress the heat generation of the connecting portion. It is preferable to do.

図示の例では、短絡装置40を電源側及び負荷側分離端子11、12に取り付けるため、例えば、短絡装置40の本体603に形成された穴602に挿入されるドライバー等の工具を用いて、ねじ構造の接続部41を短絡装置接続部33の穴に締め付けることができる。このときの状態を図15(A)に示す。こうして分離端子11、12に短絡装置40が接続且つ固定された状態で、分離端子11、12を計器端子部2から分離する(図15(B))。この時、上記したように、分離端子側接続部34は凹部を形成しているので、充電部が外部に露出されることがない。このため、作業者は、感電等の虞なく容易に作業できる。計器交換後、新しい計器の計器端子部2に、短絡装置40が取り付けられた状態の電源側及び負荷側分離端子11、12を接続する。その後、再び、ドライバー等で短絡装置接続部33から接続部41を外すことにより、短絡装置40を分離端子11、12から取り外す。   In the illustrated example, in order to attach the short-circuit device 40 to the power supply side and load-side separation terminals 11, 12, a screw such as a screwdriver inserted into a hole 602 formed in the main body 603 of the short-circuit device 40 is used. The connecting part 41 of the structure can be tightened in the hole of the short-circuit device connecting part 33. The state at this time is shown in FIG. With the short-circuit device 40 connected and fixed to the separation terminals 11 and 12 in this way, the separation terminals 11 and 12 are separated from the instrument terminal portion 2 (FIG. 15B). At this time, as described above, since the separation terminal side connection portion 34 forms a recess, the charging portion is not exposed to the outside. For this reason, the operator can work easily without fear of electric shock or the like. After the instrument replacement, the power source side and load side separation terminals 11 and 12 with the short circuit device 40 attached are connected to the instrument terminal section 2 of the new instrument. Then, the short circuit device 40 is removed from the separation terminals 11 and 12 by removing the connection portion 41 from the short circuit device connection section 33 again with a screwdriver or the like.

[送電の停止停解方法]
図16は、本発明の据置型分離端子1を用いた、送電の停止停解方法を説明する図である。
[How to stop and stop power transmission]
FIG. 16 is a diagram for explaining a method of stopping and stopping power transmission using the stationary separation terminal 1 of the present invention.

送電の停止停解作業では、負荷側分離端子12を計器端子部2から抜き差しすることにより、負荷側配電線(3L、2L、1L)のみを計器端子部2から着脱することができる。このように、本発明の据置型分離端子1は、電源側分離端子11と負荷側分離端子12に分割されているので、着脱する電線を間違える虞がない。さらに、上述した工夫(図10(B)、図11(B))により、中性線2Lが他の配電線1L、3Lよりも後に計器端子部2から分離される。従って、単相3線式の場合でも、線間のバランスが崩れ、負荷に接続された機器が過電圧によって破損することがない。また、仮に負荷側分離端子12が接続された状態で電源側分離端子11が抜き差しされたとしても、凹部である分離端子側接続部34は露出しないため、作業者の感電等の虞がなく、さらに、図10(B)、図11(B)に示す構成を備えることにより、負荷側機器の破損を防止することができる。     In the power transmission stop / stop operation, only the load-side distribution lines (3L, 2L, 1L) can be attached to and detached from the instrument terminal section 2 by inserting and removing the load-side separation terminal 12 from the instrument terminal section 2. Thus, since the stationary separation terminal 1 of the present invention is divided into the power supply side separation terminal 11 and the load side separation terminal 12, there is no risk of mistakenly attaching and detaching electric wires. Further, the neutral wire 2L is separated from the instrument terminal portion 2 after the other distribution lines 1L and 3L by the above-described devices (FIGS. 10B and 11B). Therefore, even in the case of the single-phase three-wire system, the balance between the wires is not lost, and the device connected to the load is not damaged by the overvoltage. Further, even if the power supply side separation terminal 11 is inserted and removed in a state where the load side separation terminal 12 is connected, the separation terminal side connection portion 34 which is a recess is not exposed, so there is no risk of an operator's electric shock, etc. Furthermore, by providing the configuration shown in FIGS. 10B and 11B, it is possible to prevent the load side device from being damaged.

送電の停止を解除するときは、負荷側分離端子12を計器端子部2に戻す。このときも、上述した工夫(図10(B)、図11(B))により、中性線2Lが他の配電線1L、3Lよりも先に計器端子部2に接続される。従って、線間のバランスが崩れ、負荷に接続された機器が過電圧によって破損することがない。     When canceling the stop of power transmission, the load side separation terminal 12 is returned to the instrument terminal portion 2. Also at this time, the neutral wire 2L is connected to the instrument terminal portion 2 before the other distribution lines 1L and 3L by the above-described devices (FIGS. 10B and 11B). Therefore, the balance between the lines is not lost, and the device connected to the load is not damaged by the overvoltage.

本発明の据置型分離端子は、電力量計等の計器の端子部に適用され、計器の交換時における無停電工法と送電の停止停解工法に関連する機器等に広く適用することができる。     The stationary separation terminal of the present invention is applied to a terminal portion of a meter such as a watt hour meter and can be widely applied to devices related to the uninterruptible construction method and the power transmission stop / stop construction method at the time of replacement of the meter.

1S、2S、3S、3L、2L、1L 配電線
1 据置型分離端子
2 計器端子部
11 電源側分離端子
12 負荷側分離端子
11a、12a 本体
21 電源側収容部
22 負荷側収容部
23 隔壁
24 計器側接続部
30 電線挿入穴
31 電線接続ねじ
32 開口
33 短絡装置接続部
34 分離端子側接続部
c、c´、c´´ 導通部分
d 非導通部分
40 短絡装置
41 接続部
100 端子カバー
101 押込突起
102 端子カバー用装着ねじ
103 端子カバー装着用ねじ穴
104 計器固定用ねじ穴
105 段部
106 係合部
200 計器本体
300 計器
400 試験用端子
501、502 突起受け入れ溝
600 導通部
601 棒端子
602 穴
603 短絡装置本体
1S, 2S, 3S, 3L, 2L, 1L Distribution line 1 Stationary separation terminal 2 Instrument terminal part 11 Power supply side separation terminal 12 Load side separation terminal 11a, 12a Main body 21 Power supply side accommodation part 22 Load side accommodation part 23 Bulkhead 24 Instrument Side connection portion 30 Wire insertion hole 31 Wire connection screw 32 Opening 33 Short circuit device connection portion 34 Separation terminal side connection portion c, c ′, c ″ Conduction portion d Non-conduction portion 40 Short circuit device 41 Connection portion 100 Terminal cover 101 Pushing projection 102 Terminal cover mounting screw 103 Terminal cover mounting screw hole 104 Instrument fixing screw hole 105 Step part 106 Engaging part 200 Instrument body 300 Instrument 400 Test terminal 501, 502 Protrusion receiving groove 600 Conducting part 601 Bar terminal 602 Hole 603 Short circuit body

Claims (1)

配電線と計器とを接続するように前記計器の端子部内に受け入れられ、且つ、前記計器の端子部から分離可能な、据置型分離端子であって、電源側分離端子と負荷側分離端子とに分割されており、
前記電源側分離端子及び負荷側分離端子の各々が、前記計器の端子部に形成された収容部内に嵌合状態で取り付けられており、
前記電源側分離端子と前記負荷側分離端子は、互いに異なる外形を有している、据置型分離端子。
A stationary separation terminal that is received in the terminal portion of the meter so as to connect the distribution line and the meter and is separable from the terminal portion of the meter, and is connected to a power source side separation terminal and a load side separation terminal. Divided,
Each of the power supply side separation terminal and the load side separation terminal is attached in a fitted state in a housing part formed in the terminal part of the meter ,
The power source side separation terminal and the load side separation terminal are stationary type separation terminals having different external shapes .
JP2009110605A 2009-04-30 2009-04-30 Stationary separation terminal Expired - Fee Related JP5356907B2 (en)

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US9057626B2 (en) * 2011-01-13 2015-06-16 General Electric Company Advanced metering infrastructure (AMI) cartridge for an energy meter
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JP7437844B2 (en) * 2020-03-24 2024-02-26 富士電機メーター株式会社 Power meter housing base and power meter
KR102950650B1 (en) 2023-09-07 2026-04-09 한국전력공사 Changing device for electric meter and method thereof

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JPS6212868A (en) * 1985-07-10 1987-01-21 Toshiba Corp Uninterruptive replacing device for watt-hour meter
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JPH07198753A (en) * 1993-12-28 1995-08-01 Fuji Electric Co Ltd Terminal device of electricity meter
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