JP4111354B2 - Breaker with built-in current detection current transformer and distribution board - Google Patents

Breaker with built-in current detection current transformer and distribution board Download PDF

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Publication number
JP4111354B2
JP4111354B2 JP30973897A JP30973897A JP4111354B2 JP 4111354 B2 JP4111354 B2 JP 4111354B2 JP 30973897 A JP30973897 A JP 30973897A JP 30973897 A JP30973897 A JP 30973897A JP 4111354 B2 JP4111354 B2 JP 4111354B2
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Japan
Prior art keywords
breaker
winding
current transformer
current detection
detection current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP30973897A
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Japanese (ja)
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JPH11134999A (en
Inventor
正夫 今本
裕司 平藪
雄一郎 義満
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Tempearl Industrial Co Ltd
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Tempearl Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Priority to JP30973897A priority Critical patent/JP4111354B2/en
Publication of JPH11134999A publication Critical patent/JPH11134999A/en
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Publication of JP4111354B2 publication Critical patent/JP4111354B2/en
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  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Breakers (AREA)
  • Distribution Board (AREA)

Description

【0001】
【産業上の利用分野】
本発明は、過電流になったとき重要度に応じて分岐負荷回路を遮断し、軽負荷に戻ったとき遮断回路を復帰・制御する機能(ピークカットコントローラ)を内蔵した分電盤や、通電電流表示付分電盤などに使用されるブレーカに関する。
【0002】
【従来の技術】
前記分野における従来の方法としては、ブレーカの電源側または負荷側に接続される電線に電流検出用変流器を貫通させて使用(ブレーカの外付)されるのが一般的であった。
また、従来の分電盤は、主幹ブレーカの負荷側端子から分岐ブレーカの端子への接続に一部電線が使用されていたので、電流検出用変流器は当該電線に貫通させて使用することができた。
【0003】
【発明が解決しようとする課題】
しかし、最近の分電盤は、主幹ブレーカの負荷側端子から分岐ブレーカの端子への接続は銅ブスバーが使用されており、電流検出用変流器を貫通させることができない。
そこで、主幹ブレーカの電源側端子へ接続される電線へ電流検出用変流器を貫通させることになるが、当該電線の端子への接続は電気工事業者の作業となるので、極性の間違いや未挿入などの危険性があった。
【0004】
【発明の目的】
そこで本発明は、電流検出用変流器を極性の間違いや未挿入など誤使用されることがなく、確実に分岐ブレーカの電源側に挿入される手段を提供することを目的とした。
【0005】
【課題を解決するための手段】
目的を達成するための手段は、分電盤の主幹ブレーカとして使用される配線用遮断器や漏電遮断器の器体内部の負荷端子近傍の電圧極の第一の主導体L1および第二の主導体L2に各々第一および第二の電流検出用変流器を極性を一致させて貫通させるとともに、前記電流検出用変流器の2次巻線のうち、第二の電流検出用変流器の2次巻線の巻終わり線と第一の電流検出用変流器の2次巻線の巻初め線が直列になるように前記器体の内部で接続し、前記第一の電流検出用変流器の2次巻線の巻初め線と、前記器体の内部で接続された第二の電流検出用変流器の2次巻線の巻終わり線と第一の電流検出用変流器の2次巻線の巻初め線と、前記第二の電流検出用変流器の2次巻線の巻初め線とを、各々異なった線色として、これら3本の2次巻線を前記器体外に引き出して構成したものである。
なお、上記のブレーカを主幹ブレーカとし、ピークカットコントローラ内蔵のブレーカを分岐ブレーカとし、前記ブレーカの器体外に引き出して構成した3本の2次巻線にコネクタを接続し、電前記ピークカットコントローラの入力線をコネクタで接続して分電盤に組み込むことにより、ピークカットコントローラ内蔵分電盤を得ることができる。また、上記のブレーカを主幹ブレーカとし、電流表示装置と組み合わせることによって通電電流表示付分電盤を得ることができる。
【0006】
【実施例の説明】
以下に、ブレーカが単相3線用3極2素子の漏電遮断器である場合において、本発明を実施した例について、図1を用いて説明する。
なお、図2および図3については、図1と同様であるので説明を省略する。
【0007】
1は、合成樹脂等によって成形された基台およびカバーからなる漏電遮断器の器体である。
2は、電源側端子で、図の上からそれぞれL2 ,N,L1 の電線が外部の電源から接続される。
3は、開閉機構部である。
4は、電磁方式あるいはバイメタル方式等による過電流引き外し素子である。5は、漏電検出・制御部で、零相変流器6によって漏電を検知し、漏電引き外し装置7を駆動し、前記開閉機構部を作動させて回路を遮断する。
8は、負荷側端子で、図の上からそれぞれL2 ,N,L1 の電線が負荷機器に接続される。
9および10は、電流検出用変流器で、それぞれ負荷端子8近傍の電圧極の主導体L2 およびL1 を極性を一致させて貫通している。
前記電流検出用変流器9および10の2次巻線は、直列になるように前記電流検出用変流器10の2次巻線の巻終わり線と前記電流検出用変流器9の2次巻線の巻初め線を前記器体1の内部で接続し、前記接続線12と前記電流検出用変流器10の2次巻線の巻初め線13と前記電流検出用変流器9の2次巻線の巻終わり線11との3本の口出し線をそれぞれ色別(異なった線色とする)し、前記器体の外部に引き出して3Pのコネクタ14に接続している。
【0008】
次に、本発明のブレーカをピークカットコントローラ内蔵分電盤に実施した例について、図4を用いて説明する。
【0009】
21は、合成樹脂等によって成形された分電盤のケースである。
22は、主幹ブレーカで、図では単相3線用漏電遮断器としている。
23は、分岐ブレーカで、複数個使用される。
24は、前記主幹ブレーカ22のL1 −Nの負荷側に取り付けられ、ピークカットコントローラを内蔵した分岐ブレーカである。
25は、前記主幹ブレーカ22のN−L2 の負荷側に取り付けられ、ピークカットコントローラを内蔵した分岐ブレーカである。
11は、前述の電流検出用変流器9の巻終わり線。
12は、前述の電流検出用変流器10の巻終わり線と電流検出用変流器9の巻初め線を接続した引き出し線。
13は、前述の電流検出用変流器10の2次巻線の巻初め線。
14は、前述の3Pのコネクタ。
前記11と12は、前記コネクタ14を介して前記24に接続されている。
前記12と13は、前記コネクタ14を介して前記25に接続されている。
【0010】
【実施例における作用】
本発明のブレーカをピークカットコントローラ内蔵分電盤に組み込み実施した例の作用について、図1および図4を用いて説明する。
【0011】
図4に示す主幹ブレーカ22のL1 ーN側の負荷電流は、図1に示す電流検出用変流器9によって検出され、ピークカットコントローラを内蔵した分岐ブレーカ24に常時入力されている。
上記において、負荷電流があらかじめ設定された電流値を超えたとき、ピークカットコントローラを内蔵した分岐ブレーカ24の内部のリレーが開動作して、前記ブレーカ24の負荷回路が遮断されてL1 ーNの負荷電流が設定値以下におさまり、最小限の被害で全停電を防止することができる。
また、負荷電流が例えば設定値の70%以下になると、今度は前記リレーが閉動作して、前記ブレーカ24の負荷回路が投入される。
以上の作用は、主幹ブレーカ22のN−L2 側についても同じである。
【0012】
【効果】
本発明のブレーカを主幹ブレーカとして組み込んだピークカットコントローラ内蔵分電盤や通電電流表示付分電盤は、電流検出用変流器の極性間違いや未挿入などの危険性がなく、付加機能が正常に働く。
また、既存の分電盤にもブレーカを取り替えるだけで容易に付加機能を追加できる利点もある。
【図面の簡単な説明】
【図1】本発明を、単相3線用3極2素子の漏電遮断器において実施した例の説明図。
【図2】本発明を、単相2線用2極1素子の漏電遮断器において実施した例の説明図。
【図3】本発明を、三相3線用3極3素子の漏電遮断器において実施した例の説明図。
【図4】本発明による単相3線用3極2素子の漏電遮断器を、ピークカットコントローラ内蔵分電盤に組み込んで実施した例の説明図。
【図5】従来の単相3線用3極2素子の漏電遮断器を、ピークカットコントローラ内蔵分電盤に組み込んで実施した例の説明図。
【符号の説明】
1 漏電遮断器の器体
2 電源側端子
3 開閉機構部
4 過電流引き外し素子
5 漏電検出・制御部
6 零相変流器
7 漏電引き外し装置
8 負荷側端子
9 電流検出用変流器
10 電流検出用変流器
11 電流検出用変流器9の2次巻線の巻終わり線
12 電流検出用変流器10の2次巻線の巻終わり線と電流検出用変流器9の2次巻線の巻初め線の接続線
13 電流検出用変流器10の2次巻線の巻初め線
14 3Pのコネクタ
21 分電盤のケース
22 主幹ブレーカ
23 分岐ブレーカ
24 ピークカットコントローラを内蔵した分岐ブレーカ
25 ピークカットコントローラを内蔵した分岐ブレーカ
[0001]
[Industrial application fields]
The present invention provides a distribution board with a built-in function (peak cut controller) that shuts off the branch load circuit according to the degree of importance when an overcurrent occurs, and returns and controls the cutoff circuit when the load returns to light load. The present invention relates to a breaker used for a distribution board with a current display.
[0002]
[Prior art]
As a conventional method in the above field, it has been common to use a current detecting current transformer through an electric wire connected to the power source side or load side of the breaker (externally attached to the breaker).
In addition, since the conventional distribution board used some wires to connect the load breaker terminal of the main breaker to the branch breaker terminal, the current detection current transformer should be used by penetrating the wire. I was able to.
[0003]
[Problems to be solved by the invention]
However, a recent distribution board uses a copper bus bar for connection from the load side terminal of the main breaker to the branch breaker terminal, and cannot pass through the current detection current transformer.
Therefore, the current detection current transformer is passed through the wire connected to the power supply side terminal of the main breaker. However, since the connection of the wire to the terminal is the work of an electrician, There was a risk of insertion.
[0004]
OBJECT OF THE INVENTION
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide means for reliably inserting a current detecting current transformer into the power supply side of a branch breaker without erroneous use such as wrong polarity or no insertion.
[0005]
[Means for Solving the Problems]
Means for achieving the object are the first main conductor L1 and the second lead of the voltage electrode near the load terminal inside the body of the circuit breaker or earth leakage breaker used as the main breaker of the distribution board. First and second current detection current transformers are passed through the body L2 with the same polarity, and the second current detection current transformer out of the secondary windings of the current detection current transformer. The winding end line of the secondary winding and the winding start line of the secondary winding of the first current detection current transformer are connected inside the body so that they are in series, and the first current detection The winding start line of the secondary winding of the current transformer, the winding end line of the secondary winding of the second current detection current transformer connected inside the container, and the first current detection current transformation The winding start line of the secondary winding of the transformer and the winding start line of the secondary winding of the second current detecting current transformer are set to different line colors, respectively. The is constructed by the drawer in the device body.
The above breaker is a main breaker, the breaker with a built-in peak cut controller is a branch breaker , a connector is connected to three secondary windings that are drawn out of the body of the breaker, and the electric peak cut controller A distribution board with a built-in peak cut controller can be obtained by connecting the input line with a connector and incorporating it into the distribution board. Moreover, a distribution board with an energizing current display can be obtained by using the above breaker as a main breaker and combining it with a current display device.
[0006]
[Explanation of Examples]
An example in which the present invention is implemented in the case where the circuit breaker is a single-phase three-wire three-pole two-element leakage breaker will be described below with reference to FIG.
2 and FIG. 3 are the same as those in FIG.
[0007]
Reference numeral 1 denotes an earth leakage circuit breaker comprising a base and a cover formed of a synthetic resin or the like.
Reference numeral 2 denotes a power supply side terminal from which L2, N, and L1 wires are connected from an external power supply from the top of the figure.
Reference numeral 3 denotes an opening / closing mechanism.
Reference numeral 4 denotes an overcurrent tripping element using an electromagnetic system or a bimetal system. Reference numeral 5 denotes a leakage detection / control unit which detects a leakage by the zero-phase current transformer 6 and drives the leakage trip device 7 to operate the opening / closing mechanism unit to cut off the circuit.
Reference numeral 8 denotes a load side terminal, and L2, N, and L1 wires are connected to the load equipment from the top of the figure.
Reference numerals 9 and 10 denote current detection current transformers, which pass through the main conductors L2 and L1 of the voltage electrode near the load terminal 8 with the same polarity.
The secondary windings of the current detection current transformers 9 and 10 and the winding end line of the secondary winding of the current detection current transformer 10 and 2 of the current detection current transformer 9 are arranged in series. The winding start line of the secondary winding is connected inside the vessel 1, the winding winding start line 13 of the secondary winding of the current detection current transformer 10 and the current detection current transformer 9. The three lead wires to the winding end wire 11 of the secondary winding are color-coded (different line colors), drawn out of the container, and connected to the 3P connector 14.
[0008]
Next, the example which implemented the breaker of this invention in the distribution board with a built-in peak cut controller is demonstrated using FIG.
[0009]
Reference numeral 21 denotes a distribution board case formed of synthetic resin or the like.
22 is a main circuit breaker, which is a single-phase three-wire earth leakage breaker in the figure.
A plurality of branch breakers 23 are used.
A branch breaker 24 is attached to the L1-N load side of the main breaker 22 and incorporates a peak cut controller.
A branch breaker 25 is attached to the NL2 load side of the main breaker 22 and incorporates a peak cut controller.
11 is a winding end line of the current detecting current transformer 9 described above.
Reference numeral 12 denotes a lead wire connecting the winding end line of the current detection current transformer 10 and the winding start line of the current detection current transformer 9.
Reference numeral 13 denotes a winding start line of the secondary winding of the current detection current transformer 10 described above.
14 is the 3P connector described above.
The 11 and 12 are connected to the 24 via the connector 14.
The 12 and 13 are connected to the 25 via the connector 14.
[0010]
Action in the embodiment
The operation of an example in which the breaker of the present invention is incorporated in a distribution board with a built-in peak cut controller will be described with reference to FIGS.
[0011]
The load current on the L1-N side of the main breaker 22 shown in FIG. 4 is detected by the current detecting current transformer 9 shown in FIG. 1, and is always input to the branch breaker 24 incorporating the peak cut controller.
In the above, when the load current exceeds a preset current value, the relay inside the branch breaker 24 incorporating the peak cut controller is opened, the load circuit of the breaker 24 is cut off, and L1−N The load current is kept below the set value, and all power failures can be prevented with minimal damage.
When the load current becomes 70% or less of the set value, for example, the relay is closed and the load circuit of the breaker 24 is turned on.
The above operation is the same for the NL2 side of the main breaker 22.
[0012]
【effect】
The distribution board with built-in peak cut controller and distribution board with energizing current display that incorporates the breaker of the present invention as the main circuit breaker does not have the risk of current detection current transformer polarity error or not inserted, and the additional functions are normal. To work.
In addition, there is an advantage that an additional function can be easily added to the existing distribution board simply by replacing the breaker.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an example in which the present invention is implemented in a single-phase three-wire three-pole two-element earth leakage breaker.
FIG. 2 is an explanatory diagram of an example in which the present invention is implemented in a single-phase two-wire two-pole one-element earth leakage breaker.
FIG. 3 is an explanatory diagram of an example in which the present invention is implemented in a three-pole three-element earth leakage breaker for three-phase three-wire.
FIG. 4 is an explanatory diagram of an example in which a single-phase three-wire three-pole two-element earth leakage breaker according to the present invention is incorporated in a distribution board with a built-in peak cut controller.
FIG. 5 is an explanatory diagram of an example in which a conventional three-pole, two-element leakage breaker for single-phase three-wire is incorporated in a distribution board with a built-in peak cut controller.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Earth leakage breaker body 2 Power supply side terminal 3 Switching mechanism part 4 Overcurrent tripping element 5 Earth leakage detection / control part 6 Zero phase current transformer 7 Earth leakage trip device 8 Load side terminal 9 Current detection current transformer 10 Current detection current transformer 11 Secondary winding winding end line 12 of current detection current transformer 9 Secondary winding winding end line of current detection current transformer 10 and current detection current transformer 9 2 Connection line 13 of the first winding of the next winding First winding 14 of the secondary winding 14 of the current detection current transformer 10 3P connector 21 Distribution board case 22 Main breaker 23 Branch breaker 24 Built-in peak cut controller Branch breaker 25 Branch breaker with built-in peak cut controller

Claims (2)

ブレーカの器体内部の負荷端子近傍の電圧極の第一の主導体L1および第二の主導体L2各々第一および第二の電流検出用変流器を極性を一致させて貫通させるとともに前記電流検出用変流器の2次巻線のうち、第二の電流検出用変流器の2次巻線の巻終わり線と第一の電流検出用変流器の2次巻線の巻初め線が直列になるように前記器体の内部で接続し、前記第一の電流検出用変流器の2次巻線の巻初め線と、前記器体の内部で接続された第二の電流検出用変流器の2次巻線の巻終わり線と第一の電流検出用変流器の2次巻線の巻初め線と、前記第二の電流検出用変流器の2次巻線の巻初め線とを、各々異なった線色として、これら3本の2次巻線を前記器体外に引き出して構成したことを特徴とするブレーカ。 Rutotomoni respectively first and second current detection current transformer is penetrated by matching the polarity in the first main conductor L1 and the second main conductor L2 voltage pole of the device body inside the load terminals near the breaker Among the secondary windings of the current detection current transformer, the winding end line of the secondary winding of the second current detection current transformer and the secondary winding of the first current detection current transformer A winding start line is connected inside the container so that it is in series, and a winding starting line of a secondary winding of the first current detecting current transformer is connected to a second winding connected inside the container. The winding end line of the secondary winding of the current detection current transformer, the winding start line of the secondary winding of the first current detection current transformer, and the secondary winding of the second current detection current transformer A breaker characterized in that each of the three secondary windings is drawn out of the vessel body with different winding colors of the winding start wires . 請求項1記載のブレーカの器体外に引き出した3本の2次巻線にコネクタを接続し、該ブレーカを主幹ブレーカとして組み込んだことを特徴とする分電盤。 A distribution board comprising: a connector connected to three secondary windings drawn out of the body of the breaker according to claim 1 ; and the breaker incorporated as a main breaker.
JP30973897A 1997-10-24 1997-10-24 Breaker with built-in current detection current transformer and distribution board Expired - Lifetime JP4111354B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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JP4111354B2 true JP4111354B2 (en) 2008-07-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012120322A (en) * 2010-11-30 2012-06-21 Tempearl Ind Co Ltd Residential distribution board

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JP4626311B2 (en) * 2005-01-14 2011-02-09 パナソニック電工株式会社 Equipment for distribution boards
KR101657044B1 (en) * 2016-07-28 2016-09-19 (주)서전기전 A breaker intergrated zct and low-voltage distributing board having it
KR101873005B1 (en) * 2017-12-12 2018-07-31 에이디파워 주식회사 3 Phase 4 Wires Zero Current Transformer for Detecting Insulation Resistance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012120322A (en) * 2010-11-30 2012-06-21 Tempearl Ind Co Ltd Residential distribution board

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