JP2000323202A - Terminal block with built-in ct - Google Patents
Terminal block with built-in ctInfo
- Publication number
- JP2000323202A JP2000323202A JP11128256A JP12825699A JP2000323202A JP 2000323202 A JP2000323202 A JP 2000323202A JP 11128256 A JP11128256 A JP 11128256A JP 12825699 A JP12825699 A JP 12825699A JP 2000323202 A JP2000323202 A JP 2000323202A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- terminal block
- main body
- built
- secondary output
- 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.)
- Pending
Links
Landscapes
- Transformers For Measuring Instruments (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
- Breakers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、端子台本体の内部
にＣＴを収納したＣＴ内蔵端子台に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CT built-in terminal block in which a CT is housed inside a terminal block body.
【０００２】[0002]
【従来の技術】ＣＴを使用して回路の電流検出を行う際
には、図５に示すように配線用遮断器１とＣＴ２と端子
台３とを別々に設置し、これらを電線４にて配線する必
要があり、配線に手数を要するうえに広いスペースが必
要となっていた。そこで端子台３とＣＴ２とを一体化す
ることにより施工性を向上させることも検討されている
が、端子台３の一次導体の端子５の端子カバーとＣＴ２
の二次出力端子６の端子カバーとを別々に設ける必要が
あり、その取り付けに手数を要し、施工上の問題があっ
た。2. Description of the Related Art When a current is detected in a circuit by using a CT, a circuit breaker 1, a CT 2 and a terminal block 3 are separately installed as shown in FIG. Wiring has to be performed, which requires a lot of trouble and requires a large space. Therefore, it has been considered to improve the workability by integrating the terminal block 3 and the CT 2. However, the terminal cover of the terminal 5 of the primary conductor of the terminal block 3 and the CT 2 are not considered.
It is necessary to separately provide the terminal cover of the secondary output terminal 6 and the installation is troublesome, and there is a problem in construction.
【０００３】[0003]
【発明が解決しようとする課題】本発明は上記した従来
の問題点を解決し、広いスペースを必要とせず、配線や
端子カバーの取り付け、端子間の短絡等の手数を削減し
て施工性を向上させたＣＴ内蔵端子台を提供するために
なされたものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, does not require a large space, reduces the trouble of attaching wiring and terminal covers, shorting between terminals, etc., thereby improving workability. This is to provide an improved CT built-in terminal block.
【０００４】[0004]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明のＣＴ内蔵端子台は、端子台本体の
内部にＣＴを収納するとともに、この端子台本体の上部
に、一次導体の端子と二次出力端子とを覆う一体型の端
子カバーを取り付けたことを特徴とするものである。According to the present invention, there is provided a terminal block with a built-in CT, which accommodates a CT inside a terminal block main body and a primary conductor on an upper portion of the terminal block main body. And an integrated terminal cover for covering the terminal and the secondary output terminal.
【０００５】このように、本発明のＣＴ内蔵端子台は端
子台本体の内部にＣＴを収納したため、図５に示した従
来のものに比較してスペースの削減と、配線の手数を削
減することができる。また端子台本体の上部に、一次導
体の端子と二次出力端子とを覆う一体型の端子カバーを
取り付けたので、端子カバーの取り付けの手数も削減す
ることができる。更に請求項６に示した構成を採用する
ことにより、端子間の短絡の手数も削減することができ
る。以下に本発明の内容を更に詳細に説明する。As described above, the terminal block with a built-in CT according to the present invention accommodates the CT inside the terminal block main body, so that the space and the number of wirings can be reduced as compared with the conventional one shown in FIG. Can be. In addition, since an integrated terminal cover that covers the terminal of the primary conductor and the secondary output terminal is attached to the upper part of the terminal block main body, the number of steps for attaching the terminal cover can be reduced. Further, by adopting the configuration described in claim 6, the number of times of short-circuiting between terminals can be reduced. Hereinafter, the content of the present invention will be described in more detail.
【０００６】[0006]
【発明の実施の形態】図１は本発明の第１の実施形態を
示す図であり、請求項１〜３に対応するものである。図
中、１０は端子台本体であり、その電源側と負荷側に、
それぞれ一次導体の端子１１、１２が設けられている。
この端子台本体１０の内部にはこれらの端子１１、１２
間を流れる電流を検出するためのＣＴ（変流器）が収納
されている。このＣＴ自体は周知のものであり、３極の
中の１極の端子板の周囲に捲線を備えた構造となってい
る。このため、スペースの削減と、配線の手数の削減を
図ることができる。FIG. 1 is a view showing a first embodiment of the present invention, and corresponds to claims 1 to 3. In the figure, reference numeral 10 denotes a terminal block main body, on its power supply side and load side,
Terminals 11 and 12 of the primary conductor are provided, respectively.
These terminals 11 and 12 are provided inside the terminal block body 10.
A CT (current transformer) for detecting a current flowing therebetween is housed. The CT itself is well known, and has a structure in which a winding is provided around a terminal plate of one of three poles. Therefore, it is possible to reduce the space and the number of wirings.
【０００７】図１に示すように、このＣＴの出力端子で
ある２個の二次出力端子１３が、端子台本体１０の片側
上面に形成されている。またこの端子台本体１０の上部
に端子カバー１４がネジによって取り付けられている
が、この端子カバー１４は一次導体の端子１２と二次出
力端子１３とを覆う一体型のものであり、これらの両方
の端子部を同時に覆うことができるようになっている。
このため、端子カバー１４の取り付けの手数も削減する
ことができる。As shown in FIG. 1, two secondary output terminals 13 which are output terminals of the CT are formed on the upper surface on one side of the terminal block main body 10. A terminal cover 14 is attached to the upper part of the terminal block main body 10 by screws. The terminal cover 14 is an integral type covering the terminal 12 of the primary conductor and the secondary output terminal 13. Can be simultaneously covered.
Therefore, the number of steps for attaching the terminal cover 14 can be reduced.
【０００８】この実施形態では、端子台本体１０の上部
の幅方向に、二次出力端子１３への配線を通すための配
線用溝１５が形成されている。この配線用溝１５を利用
して二次出力端子１３への配線を端子カバー１４の下側
から左右いずれの方向にも引き出すことができ、上記の
一体型の端子カバー１４によって配線が邪魔されること
がない。In this embodiment, a wiring groove 15 for passing wiring to the secondary output terminal 13 is formed in the width direction of the upper part of the terminal block main body 10. The wiring to the secondary output terminal 13 can be drawn out from the lower side of the terminal cover 14 in either the left or right direction by using the wiring groove 15, and the wiring is obstructed by the integrated terminal cover 14. Nothing.
【０００９】端子台本体１０の上部には、その一次導体
の極間電圧検出用の端子１６が設けられている。この実
施形態では、これらの極間電圧検出用の端子１６は図１
に示すように上記した２個の二次出力端子１３の近傍に
配置されている。これらの端子１６は３極の端子板にそ
れぞれ接続されており、任意の極間の電圧を測定するこ
とができる。A terminal 16 for detecting the voltage between the poles of the primary conductor is provided on the upper portion of the terminal block main body 10. In this embodiment, the terminals 16 for detecting the voltage between the electrodes are connected to each other as shown in FIG.
As shown in the figure, the secondary output terminals 13 are disposed in the vicinity of the two secondary output terminals 13. These terminals 16 are connected to three-pole terminal plates, respectively, so that a voltage between any poles can be measured.
【００１０】図２に示す第２の実施形態は、請求項４に
対応するものである。この実施形態では、計測にＣＴを
必要とする機器（例えば電流計、漏電検出器など）１７
とその計測用のＣＴとを、一体で端子台本体１０の内部
に収納してある。１８はその表示部であり、端子カバー
１４を透明として読み取り可能とするか、端子カバー１
４に窓孔を形成して表示部１８を読み取れるようにして
ある。なお２０は端子台本体１０の電源側の端子１１に
接続された配線用遮断器である。A second embodiment shown in FIG. 2 corresponds to claim 4. In this embodiment, a device requiring a CT for measurement (for example, an ammeter, a leakage detector, etc.) 17
And a CT for the measurement are integrally housed inside the terminal block main body 10. Numeral 18 denotes a display unit for making the terminal cover 14 transparent so that it can be read, or for the terminal cover 1.
4, a window hole is formed so that the display unit 18 can be read. Reference numeral 20 denotes a circuit breaker connected to the terminal 11 on the power supply side of the terminal block main body 10.
【００１１】図２の実施形態では表示部１８を端子台本
体１０の上面に設けたが、図３に示す第３の実施形態
（請求項５に対応）のように、表示部１８を計測にＣＴ
を必要とする機器１７から分離し、機器１７の出力端子
２３と電線１９で接続して端子台本体１０から離れた場
所で表示できるようにすることもできる。この図３の構
成は、端子台本体１０が盤の内部等の読み取りに不便な
位置にあるときに有利である。In the embodiment shown in FIG. 2, the display unit 18 is provided on the upper surface of the terminal block main body 10. However, as in the third embodiment (corresponding to claim 5) shown in FIG. CT
Can be separated from the device 17 that requires it, and connected to the output terminal 23 of the device 17 with the electric wire 19 so that the display can be performed at a place remote from the terminal block main body 10. The configuration shown in FIG. 3 is advantageous when the terminal block main body 10 is located at an inconvenient position for reading the inside of the board or the like.
【００１２】なお前記した実施形態では通電中ではＣＴ
の二次出力端子１３、１３間には常に電圧が発生してい
るので、端子１３、１３にリード線を接続する作業時に
は人が触れる恐れがあるので、端子カバー１４を開いた
際には二次出力端子１３、１３間を短絡させておくこと
が望ましい。よって、請求項６に対応する第４の実施形
態では、図４のように二次出力端子１３、１３の下部に
たわみ可能な短絡バー２１を設けて二次出力端子１３、
１３と接触状態とし、短絡させてある。In the above-described embodiment, during the energization, the CT
Since a voltage is constantly generated between the secondary output terminals 13 and 13, there is a possibility that a person may touch the work when connecting the lead wires to the terminals 13 and 13. It is desirable to short-circuit the next output terminals 13 and 13. Therefore, in the fourth embodiment corresponding to claim 6, a flexible short-circuit bar 21 is provided below the secondary output terminals 13 and 13 as shown in FIG.
13 and short-circuited.
【００１３】端子カバー１４の裏面には差し込み片２２
が突設されており、端子カバー１４を開いた状態で二次
出力端子１３、１３にリード線を接続したうえ、図４の
右図に示すように端子カバー１４を端子台本体１０に取
り付けると、これらの差し込み片２２が二次出力端子１
３と短絡バー２１との間に入り込む。この結果、短絡が
解除されて測定可能となる。なお必ずしも二次出力端子
１３にリード線を接続する必要はなく、端子カバー１４
を端子台本体１０に取り付けた状態でテストピンを二次
出力端子１３、１３に接触させることによっても、測定
可能である。On the back surface of the terminal cover 14, an insertion piece 22 is provided.
When lead wires are connected to the secondary output terminals 13 and 13 with the terminal cover 14 opened, and the terminal cover 14 is attached to the terminal block main body 10 as shown in the right diagram of FIG. , These insertion pieces 22 are the secondary output terminals 1
3 and short-circuit bar 21. As a result, the short circuit is released and measurement becomes possible. Note that it is not always necessary to connect a lead wire to the secondary output terminal 13 and the terminal cover 14
The measurement can also be performed by bringing the test pins into contact with the secondary output terminals 13 in a state where the test pins are attached to the terminal block main body 10.
【００１４】[0014]
【発明の効果】以上に説明したように、請求項１の発明
によれば、広いスペースを必要とせず、配線や端子カバ
ーの取り付けも容易なＣＴ内蔵端子台を得ることができ
る。請求項２の発明によれば、一体型の端子カバーに邪
魔されることなく、二次出力端子への配線を左右いずれ
の方向にも引き出すことができる。請求項３の発明によ
れば、一次導体の極間電圧を容易に検出することができ
る。請求項４の発明によれば、計測にＣＴを必要とする
機器全体を端子台に内蔵させることができる。請求項５
の発明によれば、表示部のみを分離して読み取り易くす
ることができる。請求項６の発明によれば、端子カバー
を開いた状態では電圧が発生せず、安全である。As described above, according to the first aspect of the present invention, it is possible to obtain a CT built-in terminal block which does not require a large space and is easy to attach a wiring and a terminal cover. According to the second aspect of the invention, the wiring to the secondary output terminal can be drawn out in either the left or right direction without being obstructed by the integrated terminal cover. According to the third aspect of the present invention, the voltage between the primary conductors can be easily detected. According to the fourth aspect of the present invention, the entire device requiring CT for measurement can be built in the terminal block. Claim 5
According to the invention, it is possible to separate only the display unit to make it easier to read. According to the invention of claim 6, no voltage is generated in a state where the terminal cover is opened, and the terminal cover is safe.
【図１】第１の実施形態を示す斜視図である。FIG. 1 is a perspective view showing a first embodiment.
【図２】第２の実施形態を示す平面図である。FIG. 2 is a plan view showing a second embodiment.
【図３】第３の実施形態を示す平面図である。FIG. 3 is a plan view showing a third embodiment.
【図４】第４の実施形態を示す断面図である。FIG. 4 is a cross-sectional view illustrating a fourth embodiment.
【図５】従来例を示す平面図である。FIG. 5 is a plan view showing a conventional example.
１ 配線用遮断器 ２ ＣＴ ３ 端子台 ４ 電線 ５ 一次導体の端子 ６ 二次出力端子 １０ 端子台本体 １１ 一次導体の端子 １２ 一次導体の端子 １３ 二次出力端子 １４ 端子カバー １５ 配線用溝 １６ 極間電圧検出用の端子 １７ 計測にＣＴを必要とする機器 １８ 表示部 １９ 電線 ２０ 配線用遮断器 ２１ 短絡バー ２２ 差し込み片 ２３ 機器の出力端子 DESCRIPTION OF SYMBOLS 1 Wiring breaker 2 CT 3 Terminal block 4 Electric wire 5 Primary conductor terminal 6 Secondary output terminal 10 Terminal block body 11 Primary conductor terminal 12 Primary conductor terminal 13 Secondary output terminal 14 Terminal cover 15 Wiring groove 16 pole Terminal for detecting voltage between devices 17 Equipment requiring CT for measurement 18 Display unit 19 Electric wire 20 Circuit breaker 21 Shorting bar 22 Insertion piece 23 Output terminal of equipment
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5E081 AA05 AA11 BB03 BB10 CC30 DD14 EE13 GG05 5E086 DD05 DD33 JJ11 JJ26 JJ31 LL04 LL05 LL12 LL18 5G030 BA02 EA02 FA02 XX08 XX17 XX18 XX20 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5E081 AA05 AA11 BB03 BB10 CC30 DD14 EE13 GG05 5E086 DD05 DD33 JJ11 JJ26 JJ31 LL04 LL05 LL12 LL18 5G030 BA02 EA02 FA02 XX08 XX17 XX18 XX20
Claims (6)
もに、この端子台本体の上部に、一次導体の端子と二次
出力端子とを覆う一体型の端子カバーを取り付けたこと
を特徴とするＣＴ内蔵端子台。1. A terminal body, wherein a CT is housed inside the terminal base body, and an integral terminal cover for covering a terminal of a primary conductor and a secondary output terminal is mounted on an upper part of the terminal base body. Terminal block with built-in CT.
端子への配線を通すための配線用溝を形成したことを特
徴とする請求項１記載のＣＴ内蔵端子台。2. The terminal block with built-in CT according to claim 1, wherein a wiring groove for passing wiring to the secondary output terminal is formed in a width direction of an upper portion of the terminal block main body.
圧検出用の端子を設けたことを特徴とする請求項１記載
のＣＴ内蔵端子台。3. The terminal block with built-in CT according to claim 1, wherein a terminal for detecting a voltage between poles of the primary conductor is provided on an upper portion of the terminal block main body.
ＣＴを一体で端子台本体の内部に収納したことを特徴と
する請求項１記載のＣＴ内蔵端子台。4. The terminal block with built-in CT according to claim 1, wherein a device requiring CT for measurement and a CT for measurement are integrally housed inside the terminal block main body.
分離し、端子台本体から離れた場所で表示できるように
した請求項４記載のＣＴ内蔵端子台。5. The terminal block with built-in CT according to claim 4, wherein a display unit of a device that requires CT for measurement is separated so that the display can be performed at a place remote from the terminal block main body.
次出力端子間を短絡するたわみ可能な短絡バーを設ける
とともに、端子カバーの裏面に端子カバーを端子台本体
に取り付けた際に二次出力端子と短絡バーとの間に入り
込み、短絡を解除する差し込み片を設けたことを特徴と
する請求項１記載のＣＴ内蔵端子台。6. A flexible short-circuit bar for short-circuiting between secondary output terminals to which CT is connected is provided inside the terminal block main body, and when the terminal cover is attached to the terminal block main body on the back surface of the terminal cover. 2. The terminal block with a built-in CT according to claim 1, further comprising an insertion piece which is inserted between the next output terminal and the short-circuit bar to release the short circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11128256A JP2000323202A (en) | 1999-05-10 | 1999-05-10 | Terminal block with built-in ct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11128256A JP2000323202A (en) | 1999-05-10 | 1999-05-10 | Terminal block with built-in ct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000323202A true JP2000323202A (en) | 2000-11-24 |
Family
ID=14980365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11128256A Pending JP2000323202A (en) | 1999-05-10 | 1999-05-10 | Terminal block with built-in ct |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000323202A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003230254A (en) * | 2002-01-30 | 2003-08-15 | Matsushita Electric Ind Co Ltd | Current detector for air conditioner |
| JP2011141983A (en) * | 2010-01-06 | 2011-07-21 | Mitsubishi Electric Engineering Co Ltd | Signal conversion adapter terminal block |
| JP2012013492A (en) * | 2010-06-30 | 2012-01-19 | Hitachi Ie Systems Co Ltd | Terminal block with built-in current sensor |
| KR200475784Y1 (en) | 2013-09-26 | 2015-01-05 | 한국남부발전(주) | Protective terminal against ct open |
| KR20160084916A (en) * | 2015-01-06 | 2016-07-15 | (주) 솔루윈스 | Noise reduction power distribution device comprising a digital power measurement module that applies to the distribution in general |
-
1999
- 1999-05-10 JP JP11128256A patent/JP2000323202A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003230254A (en) * | 2002-01-30 | 2003-08-15 | Matsushita Electric Ind Co Ltd | Current detector for air conditioner |
| JP2011141983A (en) * | 2010-01-06 | 2011-07-21 | Mitsubishi Electric Engineering Co Ltd | Signal conversion adapter terminal block |
| JP2012013492A (en) * | 2010-06-30 | 2012-01-19 | Hitachi Ie Systems Co Ltd | Terminal block with built-in current sensor |
| KR200475784Y1 (en) | 2013-09-26 | 2015-01-05 | 한국남부발전(주) | Protective terminal against ct open |
| KR20160084916A (en) * | 2015-01-06 | 2016-07-15 | (주) 솔루윈스 | Noise reduction power distribution device comprising a digital power measurement module that applies to the distribution in general |
| KR101712048B1 (en) | 2015-01-06 | 2017-03-06 | (주) 솔루윈스 | Noise reduction power distribution device comprising a digital power measurement module that applies to the distribution in general |
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