JP4748477B2 - Circuit breaker terminal structure - Google Patents

Circuit breaker terminal structure Download PDF

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JP4748477B2
JP4748477B2 JP2005376743A JP2005376743A JP4748477B2 JP 4748477 B2 JP4748477 B2 JP 4748477B2 JP 2005376743 A JP2005376743 A JP 2005376743A JP 2005376743 A JP2005376743 A JP 2005376743A JP 4748477 B2 JP4748477 B2 JP 4748477B2
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phase
branch
circuit breaker
branch line
bus
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JP2007179862A (en
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正夫 今本
隆 馬場
茂 相原
和行 西野
忠孝 林
党正 羽生
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Tempearl Industrial Co Ltd
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Description

本発明は，導体を接続する端子構造に関し，特に，同相の分岐線導体を同時に複数個接続可能な端子構造に関する。 The present invention relates to a terminal structure for connecting conductors, and more particularly to a terminal structure capable of simultaneously connecting a plurality of in-phase branch line conductors.

住宅に設けられる分電盤においては，通常，使用可能な定格電流が定められており，分電盤内部に設けられる主開閉器と分岐開閉器を接続する母線や分岐線は，該分電盤又は分岐開閉器それぞれの定格電流を連続的に使用した場合において，電気的に十分耐えうるように設計されている（非特許文献１参照）。 In a distribution board installed in a house, the rated current that can be used is usually determined, and the main and branch lines that connect the main switch and the branch switch installed in the distribution board are connected to the distribution board. Alternatively, it is designed so that it can sufficiently withstand electrical power when the rated current of each branch switch is used continuously (see Non-Patent Document 1).

近年，消費電力が大きな電気機器の増加や，電化住宅が増加することにより，住宅における電力需要は増加傾向にあり，これに伴い，分電盤の定格電流の範囲内で，より大きな電流を分岐回路に供給できることが望まれている。 In recent years, the demand for electric power in housing has been increasing due to the increase in electrical equipment with large power consumption and the increase in electrified housing. Accordingly, a larger current is split within the rated current range of the distribution board. It is desirable to be able to supply the circuit.

例えば消費電力が大きな電気機器として電気温水器や電磁調理器などが挙げられる。新築住宅においては，このような，消費電力が大きな電気機器の使用を想定し，相応の定格電流容量を備えた分電盤を設置することが多い。 For example, an electric water heater, an electromagnetic cooker, etc. are mentioned as an electric equipment with large power consumption. In new homes, distribution boards with appropriate rated current capacities are often installed, assuming the use of such electrical devices with large power consumption.

ところが，既築住宅に設置されてある分電盤においては，予備の分岐回路スペースを設けて構成している場合があるが，このような，消費電力が大きな電気機器の追加設置を想定していない場合が多く，単に，分電盤の予備回路スペースに，追加配線を行うだけでは既存の分電盤における分岐線の定格電流容量を超えてしまうおそれがあるため，通常は，前述したような消費電力が大きな電気機器を追加設置する場合には，その電気機器用の分岐開閉器を，分電盤内に専用回路を設けて設置したり，既存の分電盤とは別に専用盤を設けて設置することが多かった。 However, distribution boards installed in existing houses may be configured with a spare branch circuit space. However, it is assumed that additional electrical equipment with high power consumption will be installed. In many cases, simply adding additional wiring to the spare circuit space of the distribution board may exceed the rated current capacity of the branch line in the existing distribution board. When additional electrical equipment with high power consumption is installed, a branch switch for the electrical equipment is installed with a dedicated circuit in the distribution board, or a dedicated panel is installed separately from the existing distribution board. Often installed.

社団法人日本配線器具工業会 規格 住宅用分電盤 ＪＷＤＳ０００７ 項２６−９ ５．６母線及び分岐線Japan Wiring Equipment Manufacturers Association Standard Residential distribution board JWDS0007 Item 26-9 5.6 Bus and branch lines

しかしながら，前述したような，消費電力が大きな電気機器を追加設置する場合において，その電気機器用の分岐開閉器を，分電盤内に専用回路を設けて設置したり，既存の分電盤とは別に専用盤を設けて設置する場合には，施工の手間が大きく不便であったり，また，別途専用盤を用意するためのコストや，該専用盤の施工コストが上乗せとなり，作業者にとっても利用者にとってもコストと手間がかかるという問題があった。また，既存の住宅盤に加えて別途専用盤を設置するスペースも必要となることから設置スペースの確保が必要となるなど省スペース性が悪いという問題があった。 However, when additional electrical equipment that consumes a large amount of power as described above is installed, a branch switch for the electrical equipment can be installed with a dedicated circuit in the distribution board, or with an existing distribution board. If a special panel is installed separately, the construction work is inconvenient and inconvenient. In addition, the cost of preparing a special panel and the construction cost of the dedicated panel are added, which is also an issue for the operator. There was also a problem that it was costly and troublesome for users. In addition to the existing housing board, a space for installing a separate board is also required, so there is a problem that the space saving performance is poor, for example, the installation space needs to be secured.

また，前述したような，消費電力が大きな電気機器はその消費電流が大きいため，通常の分岐開閉器の定格電流容量（２０Ａ〜３０Ａ）では不足し，相応の定格電流容量を備えた分岐開閉器（４０Ａ〜５０Ａ）を使用することが必要となるが，この場合，通常の分岐開閉器の使用を想定した分電盤においては，その分岐線の定格電流容量を超えるおそれがあり，異常発熱や火災が発生するおそれがあるという問題がある。そのため，既存の分電盤を，所定の定格電流容量を備えた分岐線や母線を有する新しい分電盤に置き換えるという対応策があるが，分電盤の置き換えにあたり，全ての配線を取り外し，再び施工する必要があるなど，作業面やコストの面で非常にデメリットがあるという問題があった。 In addition, since the electric devices with large power consumption as described above have large current consumption, the rated current capacity (20A to 30A) of a normal branch switch is insufficient, and the branch switch having a corresponding rated current capacity is insufficient. (40A-50A) must be used. In this case, the distribution board that assumes the use of a normal branch switch may exceed the rated current capacity of the branch line, There is a problem that a fire may occur. For this reason, there is a countermeasure to replace the existing distribution board with a new distribution board with a branch line or bus with a predetermined rated current capacity. There was a problem that there were very disadvantages in terms of work and cost, such as the necessity of construction.

そこで，本発明はこのような課題に鑑みてなされたものであり，作業者，利用者共にコストを低減できるとともに，施工性，省スペース性に優れ，しかも，分電盤の変更を行わずとも分電盤の定格電流容量の範囲内で安全に，分岐回路により大きな電流を供給することが可能な端子構造を提供することを目的としている。 Therefore, the present invention has been made in view of such a problem, and it is possible to reduce costs for both workers and users, and is excellent in workability and space saving, and without changing the distribution board. The purpose is to provide a terminal structure that can safely supply a large current to the branch circuit within the rated current capacity of the distribution board.

上記目的を達成するために，請求項１の発明では，主開閉器の負荷側に接続され，電圧相及び中性相の各相の母線に回路遮断器と接続される分岐線が複数設けられた複数の分岐開閉器に電力を供給する母線に接続される回路遮断器の端子構造であって、各相における複数の分岐線のうち隣り合う２箇所の分岐線に亘る大きさに、回路遮断器の幅方向の外郭が設けられる一方、回路遮断器の端子部に設けられた接続部が隣り合う２箇所の同相の分岐線に亘って接続される、一体で幅広い形状にプラグイン構造に形成されて、通常の接続部と板厚をそのままにして接続部の定格電流を増加させて接続することを特徴として回路遮断器の端子構造を提供したものである。 In order to achieve the above object, according to the first aspect of the present invention, a plurality of branch lines connected to the circuit breaker are provided on the buses of each phase of the voltage phase and neutral phase. A circuit breaker terminal structure connected to a bus that supplies power to a plurality of branch switches, and the circuit breaker is sized to span two adjacent branch lines among a plurality of branch lines in each phase. While the outer shell of the device is provided in the width direction, the connection part provided in the terminal part of the circuit breaker is connected across the two in-phase branch lines adjacent to each other, and is formed into a wide and integrated plug-in structure. Then , the terminal structure of the circuit breaker is provided, characterized in that the connection current is increased with the rated current of the connecting part while keeping the plate thickness as usual .

このような構成によれば，同相の分岐線導体において複数の箇所の接続部を通じて回路遮断器に電源の供給を行うことができるため，例えば分電盤に設けられる個々の分岐線のうち，接続される複数の分岐線の定格容量の合計容量に相当する電流を所定の分岐開閉器に供給でき，消費電流が大きな電気機器の使用を行う場合などに，分岐回路に，より大きな電流を供給することが可能となる。 According to such a configuration, it is possible to supply power to the circuit breaker through the connecting portions at a plurality of locations in the in-phase branch line conductors. For example, among the individual branch lines provided in the distribution board, A current corresponding to the total capacity of the rated capacities of multiple branch lines can be supplied to the specified branch switch, and a larger current is supplied to the branch circuit when using electrical equipment that consumes a large amount of current. It becomes possible.

所定の分岐開閉器は予備の分岐回路スペースなどに設置できるため，分電盤内に別途専用の分岐開閉器の設置スペースを設けることや，既存の分電盤のほかに新たに専用盤などを設ける必要がなくなり，コストを低減でき，施工性，省スペース性に優れた分電盤の定格電流容量の範囲内で安全に，分岐回路により大きな電流を供給することが可能な端子構造を提供することができる。 Because the specified branch switch can be installed in a spare branch circuit space, a dedicated branch switch installation space can be provided in the distribution board, or a new dedicated board can be installed in addition to the existing distribution board. Providing a terminal structure that eliminates the need for installation, can reduce costs, and can safely supply a large current to the branch circuit within the rated current capacity range of the distribution board, which has excellent workability and space saving. be able to.

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また，分電盤に設けられた同一の電圧相の導体としての分岐線もしくは中性相の導体としての分岐線と各々同時に接続することが可能となり，同相の分岐線導体において複数の箇所の接続部を通じて回路遮断器に電源の供給を行うことができるため，例えば分電盤に設けられる個々の分岐線のうち，接続される複数の分岐線の定格容量の合計容量に相当する電流を所定の分岐開閉器に供給でき，消費電流が大きな電気機器の使用を行う場合などに，分岐回路に，より大きな電流を供給することが可能となる。 In addition , it is possible to simultaneously connect to a branch line as a conductor of the same voltage phase or a branch line as a conductor of a neutral phase provided on the distribution board. For example, a current corresponding to the total capacity of the rated capacities of a plurality of branch lines connected among the individual branch lines provided in the distribution board can be supplied to the circuit breaker through the unit. When using electrical equipment that can be supplied to the branch switch and consumes a large amount of current, a larger current can be supplied to the branch circuit.

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本発明の回路遮断器の端子構造は，同相の分岐線を同時に複数個接続する分岐線接続部を備えたことを特徴として構成されたものであるから，同相の分岐線導体において複数の箇所の接続部を通じて回路遮断器に電源の供給を行うことができるため，例えば分電盤に設けられる個々の分岐線のうち，接続される複数の分岐線の定格容量の合計容量に相当する電流を所定の分岐開閉器に供給でき，消費電流が大きな電気機器の使用を行う場合などに，分岐回路に，より大きな電流を供給することが可能となる。所定の分岐開閉器は予備の分岐回路スペースなどに設置できるため，分電盤内に別途専用の分岐開閉器の設置スペースを設けることや，既存の分電盤のほかに新たに専用盤などを設ける必要がなくなり，コストを低減でき，施工性，省スペース性に優れた分電盤の定格電流容量の範囲内で安全に，分岐回路により大きな電流を供給することが可能な端子構造を提供することができる。 The terminal structure of the circuit breaker according to the present invention is characterized in that it has a branch line connecting portion for connecting a plurality of in-phase branch lines at the same time. Since power can be supplied to the circuit breaker through the connection part, for example, among individual branch lines provided in the distribution board, a current corresponding to the total capacity of the rated capacities of a plurality of branch lines to be connected is predetermined. This makes it possible to supply a larger current to the branch circuit when, for example, an electric device with a large current consumption is used. Because the specified branch switch can be installed in a spare branch circuit space, a dedicated branch switch installation space can be provided in the distribution board, or a new dedicated board can be installed in addition to the existing distribution board. Providing a terminal structure that eliminates the need for installation, can reduce costs, and can safely supply a large current to the branch circuit within the rated current capacity range of the distribution board, which has excellent workability and space saving. be able to.

以下に本件発明の実施の形態に係る回路遮断器の端子構造について，図面を参照しつつ詳細に説明する。 Hereinafter, a terminal structure of a circuit breaker according to an embodiment of the present invention will be described in detail with reference to the drawings.

図１から図６は，本発明の回路遮断器の端子構造の実施の形態を示している。図１及び図２は，導体と２極回路遮断器の接続を模式的に表した図である。図１は同相における分岐線接続部が各々別体に設けられた図であり，図２は同相における分岐線接続部が一体に設けられた図を示している。 1 to 6 show an embodiment of a terminal structure of a circuit breaker according to the present invention. 1 and 2 are diagrams schematically showing the connection between a conductor and a two-pole circuit breaker. FIG. 1 is a diagram in which branch line connection portions in the same phase are provided separately, and FIG. 2 is a diagram in which branch line connection portions in the same phase are provided integrally.

図１において，１は第一の相の母線，２は第二の相の母線を示しており，それぞれ電圧相，中性相とする。また，各々の母線には，回路遮断器と接続される分岐線が複数設けられている。 In FIG. 1, reference numeral 1 denotes a first phase bus, and 2 denotes a second phase bus, which are a voltage phase and a neutral phase, respectively. Each bus has a plurality of branch lines connected to the circuit breaker.

３から６は回路遮断器の分岐線接続部を示しており，それぞれ第一の接続部，第二の接続部，第三の接続部，第四の接続部である。ここで，第一の接続部３及び第二の接続部４は，第一の相の母線１に接続され，第三の接続部５及び第四の接続部６は，第二の相の母線２に接続される。 Reference numerals 3 to 6 denote branch line connection portions of the circuit breaker, which are a first connection portion, a second connection portion, a third connection portion, and a fourth connection portion, respectively. Here, the first connection part 3 and the second connection part 4 are connected to the bus bar 1 of the first phase, and the third connection part 5 and the fourth connection part 6 are connected to the bus bar of the second phase. 2 is connected.

第一の接続部３と第二の接続部４，また，第三の接続部５と第四の接続部６は，それぞれ所定の電流容量を備えた導体により接続されて，回路遮断器の第一の極，及び第二の極を形成している。第一の相の母線１，第二の相の母線２から，これら接続部を介して供給された電流は，回路遮断器内部に設けられた各極の開閉機構により開閉される接点装置を通って，負荷側端子から負荷回路に導かれる。 The first connection part 3 and the second connection part 4, and the third connection part 5 and the fourth connection part 6 are connected by conductors having a predetermined current capacity, respectively. One pole and a second pole are formed. The current supplied from the first phase bus 1 and the second phase bus 2 through these connections passes through a contact device that is opened and closed by a switching mechanism of each pole provided in the circuit breaker. Then, it is led from the load side terminal to the load circuit.

第一の相の母線１及び第二の相の母線２の定格容量は，分電盤の定格電流を連続通電した場合において，十分耐えうる大きさに定められている。また，母線に複数設けられた分岐線については，各々の定格容量は分岐開閉器の定格容量を連続通電した場合において，十分耐えうる大きさに定められている。例えば，通常用いられる分岐開閉器の定格電流が２０Ａとした場合，分岐線の定格容量は少なくとも２０Ａの使用を見積もって設計されている。 The rated capacities of the first phase bus 1 and the second phase bus 2 are determined to be sufficiently large when the rated current of the distribution board is continuously energized. In addition, for a plurality of branch lines provided on the bus, each rated capacity is determined to be sufficiently large when the rated capacity of the branch switch is continuously energized. For example, when the rated current of a normally used branch switch is 20 A, the rated capacity of the branch line is designed to be estimated to be at least 20 A.

ここで，電気温水器や電磁調理器など消費電力が大きな電気機器を使用するにあたり，通常用いられる分岐開閉器よりも定格電流が大きな，定格電流が４０Ａの分岐開閉器を設置する必要がある場合には，分岐線の定格容量も設置される分岐開閉器の定格電流に合わせて，少なくとも４０Ａの定格容量を確保する必要があるが，既存の分岐線の定格容量は２０Ａであるため，そのままでは分岐開閉器を設置することができない。 Here, when using electric devices with large power consumption such as electric water heaters and electromagnetic cookers, it is necessary to install a branch switch with a rated current of 40A, which has a larger rated current than that of a commonly used branch switch. However, the rated capacity of the branch line must be at least 40A according to the rated current of the installed branch switch, but the rated capacity of the existing branch line is 20A. A branch switch cannot be installed.

このような場合，図１に示したような導体と回路遮断器との接続においては，各々の分岐線の定格容量は２０Ａであっても，回路遮断器の端子は同相の分岐線に対して複数個所で接続する構造のため，同相の分岐線と２箇所で接続する場合には合計４０Ａまで供給できるようになり，前述したような消費電力が大きな電気機器の使用にあたって，定格電流が大きな分岐開閉器を設置する場合においても，該分岐開閉器の設置のために専用の回路や専用盤を別途設ける必要がなく，通常の定格電流の分岐開閉器と差し替えるだけで設置を行うことができる。 In such a case, in the connection between the conductor and the circuit breaker as shown in FIG. 1, even if the rated capacity of each branch line is 20A, the terminal of the circuit breaker is connected to the branch line of the same phase. Since it is connected at multiple locations, it can supply up to a total of 40A when connected to a branch line of the same phase at two locations. When using electrical equipment with high power consumption as described above, it has a large rated current. When installing a switch, it is not necessary to separately provide a dedicated circuit or a dedicated panel for installing the branch switch, and it can be installed simply by replacing the branch switch with a normal rated current.

なお，回路遮断器の端子の構造は，分岐線を差し込み，ねじ締め固定するねじ締め式であっても，接続部分が略コの字状に設けられ，分岐線を弾性的に挟み込むよう設けられるプラグイン式であってもよい。 The circuit breaker terminal structure is provided so that the connecting part is provided in a substantially U-shape and the branch line is elastically sandwiched even if the branch line is inserted and fixed with screws. It may be a plug-in type.

次に図２において，１は第一の相の母線，２は第二の相の母線を示しており，それぞれ電圧相，中性相とする。また，各々の母線には，回路遮断器と接続される分岐線が複数設けられている。 Next, in FIG. 2, 1 is a bus of the first phase and 2 is a bus of the second phase, which are a voltage phase and a neutral phase, respectively. Each bus has a plurality of branch lines connected to the circuit breaker.

７，８は回路遮断器の分岐線接続部を示しており，それぞれ第一の接続部，第二の接続部である。ここで，第一の接続部７は第一の相の母線１に設けられた複数の分岐線のうち２箇所の分岐線と接続され，第二の接続部８は第二の相の母線２に設けられた複数の分岐線のうち２箇所の分岐線と接続される。 Reference numerals 7 and 8 denote branch line connecting portions of the circuit breaker, which are a first connecting portion and a second connecting portion, respectively. Here, the first connecting portion 7 is connected to two branch lines among the plurality of branch lines provided on the first phase bus 1, and the second connection 8 is the second phase bus 2. Are connected to two branch lines among the plurality of branch lines provided in the.

第一の接続部７は回路遮断器の第一の極を形成し，第二の接続部８は第二の極を形成している。第一の相の母線１，第二の相の母線２から，これら接続部を介して供給された電流は，回路遮断器内部に設けられた各極の開閉機構により開閉される接点装置を通って，負荷側端子から負荷回路に導かれる。 The first connection 7 forms the first pole of the circuit breaker and the second connection 8 forms the second pole. The current supplied from the first phase bus 1 and the second phase bus 2 through these connections passes through a contact device that is opened and closed by a switching mechanism of each pole provided in the circuit breaker. Then, it is led from the load side terminal to the load circuit.

第一の相の母線１及び第二の相の母線２の定格容量は，分電盤の定格電流を連続通電した場合において，十分耐えうる大きさに定められている。また，母線に複数設けられた分岐線については，各々の定格容量は分岐開閉器の定格容量を連続通電した場合において，十分耐えうる大きさに定められている。前述したように，例えば，通常用いられる分岐開閉器の定格電流が２０Ａとした場合，分岐線の定格容量は少なくとも２０Ａの使用を見積もって設計されている。 The rated capacities of the first phase bus 1 and the second phase bus 2 are determined to be sufficiently large when the rated current of the distribution board is continuously energized. In addition, for a plurality of branch lines provided on the bus, each rated capacity is determined to be sufficiently large when the rated capacity of the branch switch is continuously energized. As described above, when the rated current of a normally used branch switch is 20 A, for example, the rated capacity of the branch line is designed to be estimated to be at least 20 A.

ここで，電気温水器や電磁調理器など消費電力が大きな電気機器を使用するにあたり，通常用いられる分岐開閉器よりも定格電流が大きな，定格電流が４０Ａの分岐開閉器を設置する必要がある場合には，分岐線の定格容量も設置される分岐開閉器の定格電流に合わせて，少なくとも４０Ａの定格容量を確保する必要があるが，既存の分岐線の定格容量は２０Ａであるため，そのままでは定格電流が４０Ａの分岐開閉器を設置することができない。 Here, when using electric devices with large power consumption such as electric water heaters and electromagnetic cookers, it is necessary to install a branch switch with a rated current of 40A, which has a larger rated current than that of a commonly used branch switch. However, the rated capacity of the branch line must be at least 40A according to the rated current of the installed branch switch, but the rated capacity of the existing branch line is 20A. A branch switch with a rated current of 40A cannot be installed.

このような場合，図２に示したような導体と回路遮断器との接続においては，各々の分岐線の定格容量は２０Ａであっても，回路遮断器の端子は同相の分岐線に対して複数個所で接続する構造のため，同相の分岐線と２箇所で接続する場合には合計４０Ａまで供給できるようになり，前述したような消費電力が大きな電気機器の使用にあたって，定格電流が大きな分岐開閉器を設置する場合においても，該分岐開閉器の設置のために専用の回路や専用盤を別途設ける必要がなく，通常の定格電流の分岐開閉器と差し替えるだけで設置を行うことができる。 In such a case, in the connection between the conductor and the circuit breaker as shown in FIG. 2, even if the rated capacity of each branch line is 20A, the terminal of the circuit breaker is connected to the branch line of the same phase. Since it is connected at multiple locations, it can supply up to a total of 40A when connected to a branch line of the same phase at two locations. When using electrical equipment with high power consumption as described above, it has a large rated current. When installing a switch, it is not necessary to separately provide a dedicated circuit or a dedicated panel for installing the branch switch, and it can be installed simply by replacing the branch switch with a normal rated current.

なお，回路遮断器の端子の構造は，分岐線を差し込み，ねじ締め固定するねじ締め式であっても，接続部分が略コの字状に設けられ，分岐線を弾性的に挟み込むよう設けられるプラグイン式であってもよい。 The circuit breaker terminal structure is provided so that the connecting part is provided in a substantially U-shape and the branch line is elastically sandwiched even if the branch line is inserted and fixed with screws. It may be a plug-in type.

次に，図３から図６を用いてその他の実施形態の回路遮断器の端子構造について説明する。 Next, the terminal structure of the circuit breaker according to another embodiment will be described with reference to FIGS.

図３は本発明の回路遮断器の端子構造を備えた回路遮断器の外観図を示したものである。１００は回路遮断器，１０１は端子部，１１１は第一の接続部，１１２は第二の接続部，１２１は第三の接続部，１２２は第四の接続部である。なお，本実施の形態においては端子部はプラグイン形式で構成されているものを示している。 FIG. 3 is an external view of a circuit breaker provided with a terminal structure for a circuit breaker according to the present invention. 100 is a circuit breaker, 101 is a terminal part, 111 is a first connection part, 112 is a second connection part, 121 is a third connection part, and 122 is a fourth connection part. In the present embodiment, the terminal portion is configured in a plug-in format.

第一の接続部１１１と第二の接続部１１２，及び第三の接続部１２１と第四の接続部１２２は，それぞれ同相の分岐線に接続される。また，第一の接続部１１１と第二の接続部１１２，及び第三の接続部１２１と第四の接続部１２２は，それぞれ，所定の電流容量を備えた導体により接続されて，回路遮断器の第一の極，及び第二の極を形成している。 The first connecting part 111 and the second connecting part 112, and the third connecting part 121 and the fourth connecting part 122 are connected to branch lines of the same phase. Further, the first connection part 111 and the second connection part 112, and the third connection part 121 and the fourth connection part 122 are connected by a conductor having a predetermined current capacity, respectively. The first and second poles are formed.

図５は回路遮断器が配設される分電盤の母線部分を示したものである。２００は中性相の導体の母線（Ｎ相の母線），３００は第一の電圧相の導体の母線（Ｌ１相の母線という），４００は第二の電圧相の導体の母線（Ｌ２相の母線という）である。 FIG. 5 shows the busbar portion of the distribution board where the circuit breaker is arranged. 200 is a neutral-phase conductor bus (N-phase bus), 300 is a first voltage-phase conductor bus (referred to as L1-phase bus), and 400 is a second voltage-phase conductor bus (L2-phase bus). Called busbar).

また，２０１はＮ相の母線と分岐開閉器に接続される第一のＮ相の分岐線，２０２は同じく第二のＮ相の分岐線，２０３は第三のＮ相の分岐線，２０４は第四のＮ相の分岐線であり，３０１はＬ１相の母線に設けられた第一のＬ１相の分岐線，３０２は同じく第二のＬ１相の分岐線，３０３は第三のＬ１相の分岐線，３０４は第四のＬ１相の分岐線である。 In addition, 201 is an N-phase bus line and a first N-phase branch line connected to the branch switch, 202 is a second N-phase branch line, 203 is a third N-phase branch line, and 204 is The fourth N-phase branch line, 301 is the first L1 phase branch line provided on the L1 phase bus, 302 is the second L1 phase branch line, and 303 is the third L1 phase branch line. A branch line 304 is a fourth L1 phase branch line.

通常，第一のＮ相の分岐線２０１と第一のＬ１相の分岐線３０１，第二のＮ相の分岐線２０２と第二のＬ１相の分岐線３０２，第三のＮ相の分岐線２０３と第三のＬ１相の分岐線３０３，第四のＮ相の分岐線２０４と第四のＬ１相の分岐線３０４を対として，分岐開閉器に接続されて分岐回路に電源を供給する。 Usually, the first N-phase branch line 201 and the first L1-phase branch line 301, the second N-phase branch line 202 and the second L1-phase branch line 302, and the third N-phase branch line 203 and a third L1-phase branch line 303, a fourth N-phase branch line 204 and a fourth L1-phase branch line 304 are connected to a branch switch to supply power to the branch circuit.

図６は，分電盤の母線部分に，本発明の回路遮断器の端子構造を備えた回路遮断器１００を配設した外観図を示している。図２に示したように，回路遮断器１００には，第一の接続部１１１と第二の接続部１１２，及び第三の接続部１２１と第四の接続部１２２が，それぞれ同相の分岐線に接続されるように設けられているため，第一の接続部１１１と第二の接続部１１２は，それぞれ第三のＬ１相の分岐線３０３と第四のＬ１相の分岐線３０４と接続され，
第三の接続部１２１と第四の接続部１２２は，それぞれ第三のＮ相の分岐線２０３と第四のＮ相の分岐線２０４と接続される。 FIG. 6 shows an external view in which the circuit breaker 100 having the terminal structure of the circuit breaker of the present invention is arranged on the busbar portion of the distribution board. As shown in FIG. 2, the circuit breaker 100 includes a first connection portion 111 and a second connection portion 112, and a third connection portion 121 and a fourth connection portion 122, each having an in-phase branch line. Therefore, the first connecting portion 111 and the second connecting portion 112 are connected to the third L1 phase branch line 303 and the fourth L1 phase branch line 304, respectively. ,
The third connection part 121 and the fourth connection part 122 are connected to a third N-phase branch line 203 and a fourth N-phase branch line 204, respectively.

各々の分岐線の定格容量が２０Ａである場合，図６のように同相において２箇所の分岐線から電流を供給することにより，合計４０Ａの定格電流を持つ回路遮断器の使用が可能となるため，消費電力が大きな電気機器の使用にあたって定格電流が大きな分岐開閉器を設置する場合においても，該分岐開閉器の設置のために専用の回路や専用盤を別途設ける必要がなく，通常の定格電流の分岐開閉器と差し替えるだけで設置を行うことができる。 When the rated capacity of each branch line is 20A, it is possible to use a circuit breaker with a rated current of 40A in total by supplying current from two branch lines in the same phase as shown in FIG. When installing a branch switch with a large rated current when using electrical equipment with high power consumption, there is no need to install a dedicated circuit or panel for installing the branch switch. Installation can be performed simply by replacing the branch switch.

次に図４には，本発明の第二の回路遮断器の端子構造を備えた回路遮断器の外観図を示したものである。５００は回路遮断器，５０１は端子部，５１１は第一の接続部，５２１は第二の接続部である。なお，本実施の形態においては端子部はプラグイン形式で構成されているものを示している。 Next, FIG. 4 shows an external view of a circuit breaker having a terminal structure of the second circuit breaker of the present invention. Reference numeral 500 denotes a circuit breaker, reference numeral 501 denotes a terminal portion, reference numeral 511 denotes a first connection portion, and reference numeral 521 denotes a second connection portion. In the present embodiment, the terminal portion is configured in a plug-in format.

第一の接続部５１１，及び第二の接続部５２１，各々同相の分岐線に接続され，回路遮断器の第一の極，及び第二の極を各々形成している。 The first connection portion 511 and the second connection portion 521 are connected to branch lines of the same phase, respectively, and form a first pole and a second pole of the circuit breaker.

前述した回路遮断器の端子部１０１に設けられた各接続部と比べて，本実施例の回路遮断器の端子部５０１に設けられた接続部は幅広い形状となっている。このように幅広い形状に形成することにより，板厚はそのままで接続部の定格電流を増加させることができる。すなわち，所望する回路遮断器の定格電流に合わせて接続部の幅を適宜定めることで種々の定格電流に対応することができる。 Compared with each connection part provided in the terminal part 101 of the circuit breaker mentioned above, the connection part provided in the terminal part 501 of the circuit breaker of a present Example has a wide shape. By forming in such a wide shape, the rated current of the connecting portion can be increased while keeping the plate thickness unchanged. That is, various rated currents can be handled by appropriately determining the width of the connecting portion in accordance with the desired rated current of the circuit breaker.

また，後述するが，母線に設けられた分岐線の間隔に合わせて接続部の幅方向の大きさを定めることにより，同時に接続できる分岐線の個数を適宜定めることができ，それにより，所望する定格電流を母線の定格電流の範囲内において負荷回路に供給することが可能となる。 As will be described later, the number of branch lines that can be connected simultaneously can be determined as appropriate by determining the size in the width direction of the connecting portion in accordance with the interval between the branch lines provided on the bus bar. The rated current can be supplied to the load circuit within the range of the rated current of the bus.

図７は，図５で説明した分電盤の母線部分に，本発明の回路遮断器の端子構造を備えた回路遮断器５００を配設した外観図を示している。図４に示したように，回路遮断器５００には，第一の接続部５１１，及び第三の接続部５２１が，それぞれ同相の分岐線に接続されるように設けられているため，第一の接続部５１１は，第三のＬ１相の分岐線３０３と第四のＬ１相の分岐線３０４と接続され，第二の接続部５２１は，第三のＮ相の分岐線２０３と第四のＮ相の分岐線２０４と接続されるように配設される。 FIG. 7 shows an external view in which a circuit breaker 500 having a terminal structure of a circuit breaker according to the present invention is disposed on the busbar portion of the distribution board described in FIG. As shown in FIG. 4, the circuit breaker 500 is provided with the first connection portion 511 and the third connection portion 521 so as to be connected to branch lines of the same phase. Are connected to the third L1-phase branch line 303 and the fourth L1-phase branch line 304, and the second connection part 521 is connected to the third N-phase branch line 203 and the fourth It is arranged to be connected to the N-phase branch line 204.

各々の分岐線の定格容量が２０Ａである場合，図７のように同相において２箇所の分岐線から電流を供給することにより，合計４０Ａの定格電流を持つ回路遮断器の使用が可能となるため，消費電力が大きな電気機器の使用にあたって定格電流が大きな分岐開閉器を設置する場合においても，該分岐開閉器の設置のために専用の回路や専用盤を別途設ける必要がなく，通常の定格電流の分岐開閉器と差し替えるだけで設置を行うことができる。 When the rated capacity of each branch line is 20A, it is possible to use a circuit breaker with a rated current of 40A in total by supplying current from two branch lines in the same phase as shown in FIG. When installing a branch switch with a large rated current when using electrical equipment with high power consumption, there is no need to install a dedicated circuit or panel for installing the branch switch. Installation can be performed simply by replacing the branch switch.

なお，同時に接続する分岐線の数は同相において２箇所を例として説明を行ったが，例えば５０Ａの分岐開閉器を設置する場合には，同相において３箇所の分岐線と接続を行うように端子部分を設けてもよい。すなわち，接続する分岐線の数に合わせて，端子部１０１に設けられる接続部の数を適宜変更して設けるよう構成するとよい。 The number of branch lines connected at the same time has been described by taking two locations in the same phase as an example. However, for example, when a 50 A branch switch is installed, the terminal is connected to three branch wires in the same phase. A portion may be provided. In other words, the number of connection portions provided in the terminal portion 101 may be appropriately changed according to the number of branch lines to be connected.

なお，本発明は，実施の形態に限定されることなく，発明の要旨を逸脱しない限りにおいて，適宜必要に応じて，改良や設計は自由であり，例えば，第一の接続部５１１が，第三のＬ１相の分岐線３０３と第四のＬ１相の分岐線３０４と接続され，
第二の接続部５２１が，第三のＮ相の分岐線２０３と第四のＮ相の分岐線２０４と接続されるほか，第二の接続部５２１が，Ｌ２相の分岐線と接続されるように用いてもよい。 Note that the present invention is not limited to the embodiment, and can be freely improved and designed as necessary without departing from the gist of the invention. For example, the first connection portion 511 includes the first connection portion 511. Connected to the third L1 phase branch line 303 and the fourth L1 phase branch line 304;
The second connection portion 521 is connected to the third N-phase branch line 203 and the fourth N-phase branch line 204, and the second connection portion 521 is connected to the L2-phase branch line. It may be used as follows.

以上説明したように，本発明の回路遮断器の端子構造は，同相の分岐線を同時に複数個接続する分岐線接続部を備えたものであるから，実施例で示したような分岐回路へより大きな電流を供給する用途の他，同相の端子接続部を複数設けたことにより電流供給の経路が複数用意されることとなり，通常の分岐開閉器の定格電流の使用にあたっては，片方の端子部に機械的な破損や通電不良が生じた場合においても，もう片方の端子により電流の供給が可能となるなど信頼性が向上できるという可能性がある。 As described above, the terminal structure of the circuit breaker according to the present invention is provided with a branch line connecting portion for simultaneously connecting a plurality of in-phase branch lines. In addition to the use of supplying large currents, the provision of multiple in-phase terminal connections provides multiple current supply paths. When using the rated current of a normal branch switch, Even when mechanical breakage or energization failure occurs, there is a possibility that the current can be supplied from the other terminal and the reliability can be improved.

本発明の第一の実施形態を示す図である。It is a figure which shows 1st embodiment of this invention. 本発明の第二の実施形態を示す図である。It is a figure which shows 2nd embodiment of this invention. 本発明のその他の実施形態を示す図である。It is a figure which shows other embodiment of this invention. 本発明のその他の実施形態を示す図である。It is a figure which shows other embodiment of this invention. 分電盤の母線部分を示す図である。It is a figure which shows the bus-line part of a distribution board. 回路遮断器を設置した図である。It is the figure which installed the circuit breaker. 回路遮断器を設置した図である。It is the figure which installed the circuit breaker.

１ 第一の母線
２ 第二の母線
３ 第一の接続部
４ 第二の接続部
５ 第三の接続部
６ 第四の接続部
７ 第一の接続部
８ 第二の接続部
１００ 回路遮断器
１０１ 端子部
１１１ 第一の接続部
１１２ 第二の接続部
１２１ 第三の接続部
１２２ 第四の接続部
２００ 中性相の導体の母線
３００ 第一の電圧相の導体の母線
４００ 第二の電圧相の導体の母線
５００ 回路遮断器
５０１ 端子部
５１１ 第一の接続部
５１２ 第二の接続部
DESCRIPTION OF SYMBOLS 1 1st bus line 2 2nd bus line 3 1st connection part 4 2nd connection part 5 3rd connection part 6 4th connection part 7 1st connection part 8 2nd connection part 100 Circuit breaker 101 Terminal portion 111 First connecting portion 112 Second connecting portion 121 Third connecting portion 122 Fourth connecting portion 200 Neutral phase conductor bus 300 First voltage phase conductor bus 400 Second voltage Phase conductor bus 500 Circuit breaker 501 Terminal portion 511 First connection portion 512 Second connection portion

Claims (1)

主開閉器の負荷側に接続され，電圧相及び中性相の各相の母線に回路遮断器と接続される分岐線が複数設けられた複数の分岐開閉器に電力を供給する母線に接続される回路遮断器の端子構造であって、
各相における複数の分岐線のうち隣り合う２箇所の分岐線に亘る大きさに、回路遮断器の幅方向の外郭が設けられる一方、
回路遮断器の端子部に設けられた接続部が隣り合う２箇所の同相の分岐線に亘って接続される、一体で幅広い形状にプラグイン構造に形成されて、
通常の接続部と板厚をそのままにして接続部の定格電流を増加させて接続することを特徴とする回路遮断器の端子構造。

Connected to the load side of the main switch and connected to the bus that supplies power to multiple branch switches that have multiple branch lines connected to the circuit breaker on the voltage phase and neutral phase buses A circuit breaker terminal structure,
While the outer width of the circuit breaker is provided in a size across two adjacent branch lines among a plurality of branch lines in each phase,
The connection part provided in the terminal part of the circuit breaker is connected to two adjacent in-phase branch lines, and is formed in a plug-in structure in an integrated and wide shape.
A terminal structure for a circuit breaker, characterized in that the connection current is increased by increasing the rated current of the connecting portion while keeping the plate thickness as normal .

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JP6019422B2 (en) * 2012-07-11 2016-11-02 日東工業株式会社 Plug-in type circuit breaker
JP6516548B2 (en) * 2015-04-27 2019-05-22 日東工業株式会社 Switch current measurement system

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JP3330047B2 (en) * 1997-02-28 2002-09-30 松下電工株式会社 Circuit breaker and distribution board provided with the same
JP3422239B2 (en) * 1997-12-22 2003-06-30 松下電工株式会社 Switchboard
JP2003208842A (en) * 2002-12-24 2003-07-25 Matsushita Electric Works Ltd Circuit breaker
JP4314946B2 (en) * 2003-09-24 2009-08-19 パナソニック電工株式会社 Plug-in breaker

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