JPH08273951A - Structure of current detector and method for mounting to electrical wire - Google Patents
Structure of current detector and method for mounting to electrical wireInfo
- Publication number
- JPH08273951A JPH08273951A JP7072021A JP7202195A JPH08273951A JP H08273951 A JPH08273951 A JP H08273951A JP 7072021 A JP7072021 A JP 7072021A JP 7202195 A JP7202195 A JP 7202195A JP H08273951 A JPH08273951 A JP H08273951A
- Authority
- JP
- Japan
- Prior art keywords
- split
- electric wire
- bolt
- divided
- current detector
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
- G01R15/186—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using current transformers with a core consisting of two or more parts, e.g. clamp-on type
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】 この発明は、電線路に装着して
線路電流を検出する電流検出器の構造及び電線への取付
方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a current detector that is mounted on an electric line to detect a line current and a method of attaching the electric current detector to an electric wire.
【0002】[0002]
【従来の技術】 従来のこの種の電流検出器としては、
例えば特開平4−106477号公報に示すような構成
のものが知られている。この従来の電流検出器は、第1
分割体と第2分割体とに分割して構成されている。第1
分割体は、一対の締付部を有する第1ホルダに第1分割
コアを取着するとともに、その第1分割コア中に電流セ
ンサを介装し、それらの外周に絶縁被覆をモールドして
形成されている。第2分割体は、一対の締付部を有する
第2ホルダに第2分割コアを取着し、それらの外周に絶
縁被覆をモールドして形成されている。そして、第1分
割体と第2分割体との間に電線を挟持した状態で、両ホ
ルダの締付部をボルト及びナットにより締め付けて、電
流検出器を電線上に装着するようになっている。2. Description of the Related Art As a conventional current detector of this type,
For example, a structure as shown in JP-A-4-106477 is known. This conventional current detector has a first
It is configured by being divided into a divided body and a second divided body. First
The split body is formed by attaching the first split core to a first holder having a pair of tightening portions, interposing a current sensor in the first split core, and molding an insulating coating on the outer periphery of the current sensor. Has been done. The second split body is formed by attaching the second split core to a second holder having a pair of tightening portions, and molding an insulating coating on the outer circumference of the second split core. Then, with the electric wire being sandwiched between the first divided body and the second divided body, the tightening portions of both holders are tightened with bolts and nuts, and the current detector is mounted on the electric wire. .
【0003】また、この従来の電流検出器においては、
第1分割体の第1ホルダに絶縁収容筒が固定されてい
る。この絶縁収容筒内には先端部側から光ファイバより
なる信号線が挿通され、その信号線が電流センサ側の光
ファイバにレーザにより接合されている。そして、絶縁
収容筒内にはシリコーングリス等の絶縁物が充填され、
この状態で絶縁収容筒、第1ホルダ及び第1分割コアの
外周に前記絶縁被覆がモールドされている。Further, in this conventional current detector,
The insulating container is fixed to the first holder of the first divided body. A signal line made of an optical fiber is inserted from the tip end side into the insulating container, and the signal line is joined to the optical fiber at the current sensor side by a laser. Then, the insulating container is filled with an insulating material such as silicone grease,
In this state, the insulating coating is molded on the outer circumference of the insulating container, the first holder, and the first split core.
【0004】[0004]
【発明が解決しようとする課題】 ところが、この従来
の電流検出器では、両分割体におけるホルダ上の締付部
が絶縁被覆の両側に突出され、絶縁被覆の外側において
締付部をボルト及びナットにより締め付けるようになっ
ている。このため、両分割体を電線の挟持状態に組み付
けた後に、それらの外周に絶縁カバーを装着しなければ
ならず、構造が複雑で組付が面倒であるとともに、全体
が大型になるという問題があった。However, in this conventional current detector, the tightening portions on the holders of the two divided bodies are projected on both sides of the insulating coating, and the tightening portions are provided on the outside of the insulating coating by bolts and nuts. It is designed to be tightened by. For this reason, after assembling the two divided bodies in a state of sandwiching the electric wire, it is necessary to mount an insulating cover on the outer circumference of them, which causes a problem that the structure is complicated and the assembling is complicated, and the whole becomes large. there were.
【0005】また、従来の電流検出器では、絶縁収容筒
の先端部側から光ファイバよりなる信号線を挿通し、絶
縁収容筒の基端部側において、その信号線を電流センサ
側の光ファイバにレーザにより接合している。このた
め、電流センサに対する信号線の接続作業が面倒で時間
がかかるという問題があった。Further, in the conventional current detector, a signal line made of an optical fiber is inserted from the tip end side of the insulation housing cylinder, and the signal line is connected to the current sensor side optical fiber at the base end side of the insulation housing cylinder. Are joined by laser. Therefore, there is a problem that the work of connecting the signal line to the current sensor is troublesome and takes time.
【0006】この発明は、このような従来の技術に存在
する問題点に着目してなされたものである。その主たる
目的は、両分割体を電線の挟持状態に組み付けた後に、
それらの外周に絶縁カバーを装着する必要がなく、構造
が簡単で組付を容易に行うことができるとともに、全体
を小型にすることができる電流検出器の構造及び電線へ
の取付方法を提供することにある。The present invention has been made by paying attention to the problems existing in such conventional techniques. Its main purpose is to assemble both split bodies into the state of holding the electric wire,
(EN) Provided is a structure of a current detector and a method of attaching it to an electric wire, which does not require an insulating cover to be attached to the outer periphery thereof, has a simple structure, can be easily assembled, and can be downsized. Especially.
【0007】この発明のその他の目的は、電流センサに
対する信号線の接続作業を容易かつ短時間に行うことが
できる電流検出器を提供することにある。Another object of the present invention is to provide a current detector capable of easily connecting a signal line to a current sensor in a short time.
【0008】[0008]
【課題を解決するための手段】 上記の目的を達成する
ために、請求項1に記載の発明では、締付部を有する第
1ホルダに第1分割コアを取着し、それらの外周に絶縁
被覆を施してなる第1分割体と、締付部を有する第2ホ
ルダに第2分割コアを取着し、それらの外周に絶縁被覆
を施してなる第2分割体と、第1分割体の第1分割コア
中に介装された電流センサとを備え、第1分割体と第2
分割体との間に電線を挟持した状態で、両ホルダの締付
部を締付手段により締め付けて、電線上に装着するよう
にした電流検出器において、前記各分割体の絶縁被覆
は、締付部を含めてホルダ及び分割コアの外周全体を包
囲するように形成したものである。In order to achieve the above object, in the invention according to claim 1, the first split core is attached to the first holder having the tightening portion, and the outer periphery thereof is insulated. The first divided body formed by coating the first divided body and the second divided core formed by attaching the second divided core to the second holder having the tightening portion, and the insulating coating on the outer periphery of the second divided core and the first divided body. A first split body and a second split body, and a current sensor interposed in the first split core.
In a current detector in which the electric wire is sandwiched between the divided body and the holder, the clamping parts of both holders are tightened by the tightening means so that the electric wire is mounted on the electric wire. It is formed so as to surround the entire outer circumference of the holder and the split core, including the attachment portion.
【0009】請求項2に記載の発明では、請求項1に記
載された電流検出器において、前記締付手段は一方のホ
ルダの締付部から他方のホルダの締付部に螺合される一
対のボルトよりなり、一方のボルトには所定以上の螺退
回転を規制するための規制手段を設けるとともに、他方
のボルトには螺退時の脱落を防止するための脱落防止手
段を設けたものである。According to a second aspect of the present invention, in the current detector according to the first aspect, the tightening means is a pair of screws screwed from the tightening portion of one holder to the tightening portion of the other holder. One bolt is provided with a restricting means for restricting a screw revolving rotation more than a predetermined value, and the other bolt is provided with a disengagement preventing means for preventing disengagement when the screw is retracted. is there.
【0010】請求項3に記載の発明では、請求項1に記
載された電流検出器において、前記第1分割体の第1ホ
ルダには軸線方向に沿って分割可能な絶縁収容筒を取り
付け、その絶縁収容筒内において、電流センサから延び
る光ファイバの信号線を、外部引き出し用の光ファイバ
の信号線に対し、コネクタを介して接続したものであ
る。According to a third aspect of the present invention, in the current detector according to the first aspect, the first holder of the first divided body is provided with an insulating housing cylinder that is dividable in the axial direction. The signal line of the optical fiber extending from the current sensor is connected to the signal line of the optical fiber for external extraction via a connector in the insulating container.
【0011】請求項4に記載の電線に対する電流検出器
の取付方法の発明では、第1ボルトのみが所定量螺合さ
れたままの状態で、その第1ボルトを中心に第2分割体
を第1分割体に対し相対回動させて、第1分割体の電線
挟持部を開放させ、次に、その第1分割体の電線挟持部
上に電線を挿入し、さらに、前記第1ボルトを中心に第
2分割体を第1分割体に対し相対回動させて、第1分割
体の電線挟持部を閉鎖し、その後、第1ボルトを締め付
けるとともに、両分割体の締付部に第2ボルトを螺合し
て、両分割体の分割コアを結合するものである。In the invention of the method for mounting the current detector on the electric wire according to the fourth aspect, with the first bolt alone being screwed in a predetermined amount, the second divided body is arranged around the first bolt. The electric wire holding portion of the first divided body is opened by rotating relative to the one divided body, and then the electric wire is inserted onto the electric wire holding portion of the first divided body, and further, the first bolt is centered. Then, the second divided body is relatively rotated with respect to the first divided body to close the wire holding portion of the first divided body, and then the first bolt is tightened, and the second bolt is attached to the tightened portions of both divided bodies. Are screwed together to connect the split cores of both split bodies.
【0012】[0012]
【作用】 請求項1に記載の電流検出器では、各分割体
の絶縁被覆が、締付部を含めてホルダ及び分割コアの外
周全体を包囲するように形成されている。このため、両
分割体を電線の挟持状態に組み付けた後に、それらの外
周に絶縁カバーを装着して、両ホルダの締付部及び締付
手段を被覆する必要がない。従って、電流検出器の構造
を簡単にできて、組付を容易に行うことができるととも
に、全体を小型にすることができる。In the current detector according to the first aspect, the insulating coating of each divided body is formed so as to surround the entire outer periphery of the holder and the divided core including the tightening portion. Therefore, it is not necessary to attach the insulating covers to the outer circumferences of the two holders after assembling them in a state of holding the electric wires to cover the tightening portions and the tightening means of both holders. Therefore, the structure of the current detector can be simplified, the assembling can be easily performed, and the entire size can be reduced.
【0013】また、請求項2に記載の電流検出器では、
ボルトを取り付けたままの状態で、第2分割体を第1分
割体に対し開閉回動させることにより、電流検出器を電
線に取り付けることができる。従って、電線に対する電
流検出器の取付作業を容易かつ短時間に行うことができ
る。Further, in the current detector according to claim 2,
The current detector can be attached to the electric wire by rotating the second divided body with respect to the first divided body while opening and closing the bolt. Therefore, the work of attaching the current detector to the electric wire can be performed easily and in a short time.
【0014】さらに、請求項3に記載の電流検出器にお
いて、光ファイバの信号線を接続する場合には、絶縁収
容筒を分割開放した状態で、その絶縁収容筒内にて、電
流センサから延びる信号線を、コネクタにより外部引き
出し用の信号線に接続する。その後、絶縁収容筒を閉鎖
すればよい。従って、電流センサに対し光ファイバより
なる信号線を容易に接続することができて、その接続作
業を容易かつ短時間に行うことができる。Further, in the current detector according to the third aspect, when the signal line of the optical fiber is connected, the insulation accommodating cylinder is divided and opened, and extends from the current sensor in the insulation accommodating cylinder. The signal line is connected to the signal line for external extraction by a connector. After that, the insulating container can be closed. Therefore, the signal line made of the optical fiber can be easily connected to the current sensor, and the connection work can be performed easily and in a short time.
【0015】請求項4に記載の電流検出器の取付方法に
おいては、第1ボルトを中心にして、第2分割体を第1
分割体に対し開閉回動させることにより、電流検出器を
電線に取り付けることができる。従って、電線に対する
電流検出器の取付作業を容易かつ短時間に行うことがで
きる。According to a fourth aspect of the present invention, there is provided a method of mounting a current detector, wherein the second divided body is firstly arranged around the first bolt.
The current detector can be attached to the electric wire by opening and closing and rotating the divided body. Therefore, the work of attaching the current detector to the electric wire can be performed easily and in a short time.
【0016】[0016]
【実施例】 以下、この発明の一実施例を、図面に基づ
いて説明する。図1〜図4に示すように、この実施例の
電流検出器11は第1分割体12及び第2分割体13に
分割して構成され、第1分割体12の外端面には信号線
接続部14が突設されている。そして、この第1分割体
12と第2分割体13との間に電線15を挟持した状態
で、電流検出器11が電線15上に装着され、線路電流
を検出するようになっている。Embodiment An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 4, the current detector 11 of this embodiment is divided into a first division body 12 and a second division body 13, and a signal line is connected to the outer end surface of the first division body 12. The portion 14 is provided so as to project. The current detector 11 is mounted on the electric wire 15 with the electric wire 15 sandwiched between the first divided body 12 and the second divided body 13 to detect the line current.
【0017】前記第1分割体12は、第1ホルダ16上
に第1コアケース17を介して第1分割コア18を位置
決め載置するとともに、それらの外周のほぼ全体にゴム
等の絶縁材よりなる第1絶縁被覆19を施して形成され
ている。第1ホルダ16は合成樹脂により形成され、そ
の両端には締付部としての一対のボルト挿通筒20がネ
ジ込み固定されている。そして、これらのボルト挿通筒
20も両端面を除いて、第1絶縁被覆19中に埋設され
ている。In the first divided body 12, the first divided core 18 is positioned and mounted on the first holder 16 via the first core case 17, and substantially the entire outer circumference thereof is made of an insulating material such as rubber. It is formed by applying the first insulating coating 19 as described above. The first holder 16 is made of synthetic resin, and a pair of bolt insertion cylinders 20 as tightening portions are screwed and fixed to both ends thereof. The bolt insertion cylinders 20 are also embedded in the first insulating coating 19 except for both end surfaces.
【0018】前記第1コアケース17は合成樹脂により
形成され、ケース本体21と、その両端上部に突設され
た一対の筒状部22と、押え板23とから構成されてい
る。第1分割コア18は、ケイ素鋼板の積層体よりなる
一対のL形コア18a,18bから構成され、第1コア
ケース17内においてほぼ半環状に配置されて押え板2
3と複数のネジ25により本体ケース上に保持され、か
つそれぞれ両端を筒状部22の上端から突出するように
保持されている。電流センサ24は第1分割コア18の
両L型コア18a,18b間に配置されて押え板23と
接着剤により固定され、その外底面には光ファイバより
なる一対の信号線26が延出されている。The first core case 17 is made of synthetic resin, and is composed of a case body 21, a pair of cylindrical portions 22 projecting from the upper ends of the case body 21, and a holding plate 23. The first split core 18 is composed of a pair of L-shaped cores 18 a and 18 b made of a laminated body of silicon steel plates, and is arranged in a substantially semi-annular shape in the first core case 17 to hold the pressing plate 2.
3 and a plurality of screws 25 are held on the main body case, and both ends thereof are held so as to project from the upper end of the tubular portion 22. The current sensor 24 is arranged between the L-shaped cores 18a and 18b of the first split core 18 and is fixed to the holding plate 23 with an adhesive, and a pair of signal lines 26 made of optical fibers are extended to the outer bottom surface thereof. ing.
【0019】前記第2分割体13は、第2ホルダ27上
に第2コアケース28を介して第2分割コア29を位置
決め載置するとともに、それらの外周のほぼ全体にゴム
等の絶縁材よりなる第2絶縁被覆30を施して形成され
ている。第2ホルダ27は合成樹脂により形成され、そ
の両端には締付部としての雌ネジ筒31,39が溶接固
定されている。一方の雌ネジ筒31は、第2分割体13
より突出するように長く形成されている。そして、これ
らの雌ネジ筒31,39も開口端縁を除いて、第2絶縁
被覆30中に埋設されている。In the second split body 13, the second split core 29 is positioned and mounted on the second holder 27 via the second core case 28, and substantially the entire outer circumference thereof is made of an insulating material such as rubber. The second insulating coating 30 is formed. The second holder 27 is made of synthetic resin, and female screw cylinders 31 and 39 as fastening parts are welded and fixed to both ends thereof. One female screw cylinder 31 is used for the second divided body 13
It is formed long so as to project further. The female screw cylinders 31 and 39 are also embedded in the second insulating coating 30 except for the opening edge.
【0020】前記第2コアケース28は合成樹脂により
形成され、ケース本体32と、押え板33とから構成さ
れている。第2分割コア29は、ケイ素鋼板の積層体に
よりほぼ角柱状に形成され、第2コアケース28内に収
容配置されている。そして、両分割コア18,29の両
端部は櫛歯状に形成され、これらの櫛歯状端部を互いに
係合させることによって、第1分割体12及び第2分割
体13が電線15を取り囲んだ状態に組み付け配置され
る。The second core case 28 is made of synthetic resin, and is composed of a case body 32 and a holding plate 33. The second split core 29 is formed of a laminated body of silicon steel plates into a substantially prismatic shape, and is housed and arranged in the second core case 28. Both ends of the split cores 18 and 29 are formed in a comb shape, and the first split body 12 and the second split body 13 surround the electric wire 15 by engaging these comb-shaped end portions with each other. It is assembled and placed in the state.
【0021】各一対のガイド突片34は前記第1分割コ
ア18の両端部の前後に位置するように、第1コアケー
ス17の各筒状部22上に突出形成されている。各一対
のガイド孔35は第2分割コア29の両端部の前後に位
置するように、第2コアケース28と第2絶縁被覆30
との間に形成されている。そして、これらのガイド突片
34がガイド孔35に嵌合することによって、両分割コ
ア18,29の櫛歯状端部が所定位置に係合される。Each pair of guide protrusions 34 is formed on each tubular portion 22 of the first core case 17 so as to be positioned in front of and behind both ends of the first split core 18. The pair of guide holes 35 are located at the front and rear of both ends of the second split core 29 so that the second core case 28 and the second insulating coating 30 are provided.
It is formed between and. Then, by fitting the guide protrusions 34 into the guide holes 35, the comb-teeth end portions of the split cores 18 and 29 are engaged at predetermined positions.
【0022】締付手段を構成する第1及び第2の締付ボ
ルト36,37は、前記第1分割体12と第2分割体1
3との間に電線15を挟持した状態で、第1分割体12
の各ボルト挿通筒20から突出して第2分割体13の各
雌ネジ筒31に螺合されている。そして、これらの締付
ボルト36,37の締め付けにより、両分割体12,1
3が相互に結合固定されて、電流検出器11が電線15
上に装着される。The first and second tightening bolts 36 and 37 constituting the tightening means are composed of the first divided body 12 and the second divided body 1.
In the state that the electric wire 15 is sandwiched between
Of each of the bolt insertion cylinders 20 and is screwed into each of the female screw cylinders 31 of the second divided body 13. Then, by tightening these tightening bolts 36, 37, both divided bodies 12, 1
3 are connected and fixed to each other, and the current detector 11 is connected to the electric wire 15
Mounted on top.
【0023】一対の段差部38は前記各ボルト挿通筒2
0の内周に形成され、それらの上面にはバネ座金39が
載置されている。規制手段を構成する規制リング40は
第1締付ボルト36上に取り付けられ、第1締付ボルト
36を螺退回転させたとき、この規制リング40が段差
部38に当接して、第1締付ボルト36のそれ以上の螺
退回転が規制される。脱落防止手段を構成するストップ
リング41は第2締付ボルト37上に取り付けられ、第
2締付ボルト37を螺退回転させたとき、このストップ
リング41が段差部38に当接して、ボルト挿通筒20
からの第2締付ボルト37の脱落が防止される。なお、
この実施例では、規制リング40およびストップリング
41として、Cリングを使用した。The pair of step portions 38 are formed by the respective bolt insertion cylinders 2.
The spring washers 39 are formed on the inner circumference of the springs 0 and on their upper surfaces. The restriction ring 40 that constitutes the restriction means is mounted on the first tightening bolt 36, and when the first tightening bolt 36 is screwed back and rotated, the restriction ring 40 comes into contact with the step portion 38, and the first tightening bolt 36 is tightened. Further screwing back rotation of the attached bolt 36 is restricted. The stop ring 41, which constitutes the fall-out preventing means, is attached on the second tightening bolt 37, and when the second tightening bolt 37 is screwed back and rotated, the stop ring 41 comes into contact with the stepped portion 38 to insert the bolt. Cylinder 20
The second tightening bolt 37 is prevented from falling off. In addition,
In this embodiment, C rings are used as the restriction ring 40 and the stop ring 41.
【0024】図1、図5及び図6に示すように、前記信
号線接続部14における絶縁収容筒42は第1ホルダ1
6の中央に螺合され、ナット43により回り止め固定さ
れている。この絶縁収容筒42は合成樹脂により円筒状
に形成され、そのほぼ下半分が軸線方向に沿って本体部
42aと蓋体部42bとに2分割されて、複数のネジ4
4により組み付け固定されている。As shown in FIGS. 1, 5 and 6, the insulating housing tube 42 in the signal line connecting portion 14 is the first holder 1
It is screwed in the center of 6 and is fixed by a nut 43 to prevent rotation. The insulating container 42 is formed of a synthetic resin into a cylindrical shape, and a lower half of the insulating container 42 is divided into a main body portion 42a and a lid portion 42b along the axial direction into a plurality of screws 4.
It is assembled and fixed by 4.
【0025】外部引き出し用のケーブル45は前記絶縁
収容筒42内に下端部から挿通され、一対の光ファイバ
よりなる信号線46とケーブル45に張力を付与するテ
ンションメンバ47とを、保護チューブ48内に引き揃
えて構成されている。一対の接続端子49は各信号線4
6の先端に取り付けられ、この接続端子49により信号
線46を図示しない測定器に接続できるようになってい
る。A cable 45 for external extraction is inserted from the lower end into the insulating housing 42, and a signal line 46 composed of a pair of optical fibers and a tension member 47 for applying a tension to the cable 45 are provided in a protective tube 48. It is configured by aligning with. A pair of connection terminals 49 are provided for each signal line 4
It is attached to the tip of 6, and the signal line 46 can be connected to a measuring device not shown by this connecting terminal 49.
【0026】一対のフェルール型のコネクタ50は、電
流センサ24から延びる信号線26と外部引き出し用の
信号線46との間に配設されている。各コネクタ50
は、信号線26の端部に固定された本体部51と、その
本体部51に嵌着された縦方向の割り溝を有するスリー
ブ52と、信号線46に固定された接続部53とから構
成され、接続部53をスリーブ52内に嵌挿して、両信
号線26,46を同軸状に接合することにより、両信号
線26,46を接続できるようになっている。The pair of ferrule-type connectors 50 are arranged between the signal line 26 extending from the current sensor 24 and the signal line 46 for external drawing. Each connector 50
Is composed of a main body 51 fixed to the end of the signal line 26, a sleeve 52 having a vertical split groove fitted in the main body 51, and a connecting portion 53 fixed to the signal line 46. The signal line 26 and 46 can be connected by fitting the connecting portion 53 into the sleeve 52 and joining the signal lines 26 and 46 coaxially.
【0027】シリコーングリス等よりなる高粘度の絶縁
物54は前記絶縁収容筒42内に充填され、この絶縁物
53によって各信号線26,46及びコネクタ50が絶
縁収容筒42内に密封状態で保持される。そして、前記
第1分割体12の第1絶縁被覆19が、この絶縁収容筒
42の外周を経てケーブル45の端部外周まで延長形成
され、絶縁収容筒42と対応する部分には絶縁ひだ55
が一体に形成されている。A high-viscosity insulator 54 made of silicone grease or the like is filled in the insulating container 42, and the insulator 53 holds the signal lines 26 and 46 and the connector 50 in a sealed state in the insulating container 42. To be done. Then, the first insulating coating 19 of the first divided body 12 is formed to extend to the outer circumference of the end of the cable 45 through the outer circumference of the insulating housing tube 42, and the insulating folds 55 are formed at the portions corresponding to the insulating housing tube 42.
Are integrally formed.
【0028】次に、前記のように構成された電流検出器
の取り付け方法について説明する。さて、この電流検出
器11を電線15に装着する場合には、図1に示す両分
割体12,13の結合状態において、第1締付ボルト3
6を螺退回転させると、規制リング40が段差部38に
当接係合して、第1締付ボルト36のそれ以上の螺退回
転が規制される。また、第2締付ボルト37を螺退回転
させると、ストップリング41が段差部38上に当接し
て、ボルト挿通筒20からの第2締付ボルト37の脱落
が防止される。そして、この両ボルト36,37の螺退
回転により、図7に実線で示すように、第2分割体13
を第1分割体12上から離間させることができる。Next, a method of mounting the current detector constructed as described above will be described. When the current detector 11 is attached to the electric wire 15, the first tightening bolt 3 in the connected state of the two divided bodies 12 and 13 shown in FIG.
When 6 is screwed back and rotated, the restriction ring 40 abuts and engages with the step portion 38, and further screwed back rotation of the first tightening bolt 36 is restricted. Further, when the second tightening bolt 37 is screwed back and rotated, the stop ring 41 abuts on the step portion 38, and the second tightening bolt 37 is prevented from coming off from the bolt insertion tube 20. Then, as the two bolts 36, 37 are screwed back and rotated, as shown by the solid line in FIG.
Can be separated from the first divided body 12.
【0029】このように、第1締付ボルト36が雌ネジ
筒31に所定量螺合されたままの状態で、図7に鎖線で
示すように、第1締付ボルト36を中心に、第2分割体
13を第1分割体12に対しほぼ90度だけ相対回動さ
せると、第1分割体12の上面の電線挟持部が開放され
る。この場合、第1締付ボルト36は第2締付ボルト3
7の雌ネジ筒39より長い雌ネジ筒31に螺着されてい
るので、両分割体12,13は第2締付ボルト37が離
脱しても第1締付ボルト36を介して連結されている。
従って、この状態で第1分割体12の電線挟持部上に、
電線15を挿入することができる。In this way, with the first tightening bolt 36 still screwed into the female screw cylinder 31 by a predetermined amount, as shown by the chain line in FIG. When the two-divided body 13 is relatively rotated with respect to the first divided body 12 by about 90 degrees, the wire holding portion on the upper surface of the first divided body 12 is opened. In this case, the first tightening bolt 36 is the second tightening bolt 3
7 is screwed to the female screw cylinder 31 longer than the female screw cylinder 39, the two divided bodies 12 and 13 are connected to each other via the first tightening bolt 36 even if the second tightening bolt 37 is removed. There is.
Therefore, in this state, on the wire holding portion of the first divided body 12,
The electric wire 15 can be inserted.
【0030】その後、第1締付ボルト36を中心に、第
2分割体13を第1分割体12に対しほぼ90度だけ復
帰回動させると、図7に実線で示すように、第1分割体
12の電線挟持部が閉鎖される。この状態で、第1締付
ボルト36を締め付けるとともに、第2締付ボルト37
を雌ネジ筒31に螺合して締め付けると、図1に示すよ
うに、両分割体12,13の分割コア18,29が櫛歯
状の両端部において互いに係合して、両分割体12,1
3が結合状態に組み付け固定される。これにより、電流
検出器11全体を電線15上に装着することができる。Thereafter, when the second divided body 13 is returned and rotated about 90 degrees with respect to the first divided body 12 about the first tightening bolt 36, the first divided body 13 is divided into the first divided body as shown by the solid line in FIG. The wire holding part of the body 12 is closed. In this state, while tightening the first tightening bolt 36, the second tightening bolt 37
1 is screwed into the female screw cylinder 31 and tightened, the split cores 18 and 29 of the split bodies 12 and 13 are engaged with each other at both ends of the comb-tooth shape as shown in FIG. , 1
3 is assembled and fixed in a coupled state. Thereby, the entire current detector 11 can be mounted on the electric wire 15.
【0031】以上のように、この実施例の電流検出器に
おいては、第1分割体12の第1絶縁被覆19が、締付
部としてのボルト挿通筒20を含めて、第1ホルダ16
及び第1分割コア18の外周全体を包囲するように形成
されている。また、第2分割体13の第2絶縁被覆30
も、締付部としての雌ネジ筒31を含めて、第2ホルダ
27及び第2分割コア29の外周全体を包囲するように
形成されている。As described above, in the current detector of this embodiment, the first insulating coating 19 of the first divided body 12 including the bolt insertion tube 20 as the tightening portion includes the first holder 16.
Also, it is formed so as to surround the entire outer periphery of the first split core 18. In addition, the second insulating coating 30 of the second divided body 13
Is also formed so as to surround the entire outer peripheries of the second holder 27 and the second split core 29, including the female screw cylinder 31 as the tightening portion.
【0032】そのため、各分割体の締付部が絶縁被覆の
両側に突出されている従来構成のように、両分割体を電
線の挟持状態に組み付けた後、それらの外周に絶縁カバ
ーを装着して、締付部及び締付ボルト等を被覆する必要
がない。従って、電流検出器11の構造を簡単にでき
て、組付を容易に行うことができるとともに、電流検出
器11全体を小型にすることができる。Therefore, as in the conventional structure in which the tightening portions of each divided body are projected on both sides of the insulating coating, both divided bodies are assembled in a state in which the electric wires are clamped, and then an insulating cover is attached to the outer periphery thereof. Therefore, it is not necessary to cover the tightening portion and the tightening bolt. Therefore, the structure of the current detector 11 can be simplified, the assembling can be easily performed, and the entire current detector 11 can be downsized.
【0033】また、この実施例の電流検出器11におい
ては、第1締付ボルト36上に規制手段としての規制リ
ング40が取り付けられるとともに、第2締付ボルト3
7上に脱落防止手段としてのストップリング41が取り
付けられている。そのため、両締付ボルト36,37を
取り付けたままの状態で、第1締付ボルト36を中心に
して、第2分割体13を第1分割体12に対し開閉回動
させることにより、電流検出器11を電線15に取り付
けることができる。従って、電線15に対する電流検出
器11の取付作業を容易かつ短時間に行うことができ
る。Further, in the current detector 11 of this embodiment, the regulation ring 40 as the regulation means is mounted on the first fastening bolt 36, and the second fastening bolt 3 is also provided.
A stop ring 41 as a fall-off preventing means is attached to the top of the stopper 7. Therefore, the current detection is performed by rotating the second divided body 13 with respect to the first divided body 12 with respect to the first divided body 12 with the first fastening bolt 36 as a center with the both fastening bolts 36 and 37 still attached. The device 11 can be attached to the electric wire 15. Therefore, the work of attaching the current detector 11 to the electric wire 15 can be performed easily and in a short time.
【0034】さらに、この実施例の電流検出器において
は、信号線接続部14の絶縁収容筒42が、ほぼ下半部
で軸線方向に沿って本体部42aと蓋体部42bとに分
割されている。また、この絶縁収容筒42内において、
電流センサ24から延びる光ファイバの信号線26が、
外部引き出し用ケーブル45中の光ファイバの信号線4
6に対し、コネクタ50を介して接続されるようになっ
ている。Further, in the current detector of this embodiment, the insulation housing tube 42 of the signal line connecting portion 14 is divided into a main body portion 42a and a lid portion 42b along the axial direction in a substantially lower half portion. There is. In addition, in the insulating container 42,
The optical fiber signal line 26 extending from the current sensor 24 is
Optical fiber signal line 4 in the cable 45 for external extraction
6 is connected via the connector 50.
【0035】このため、絶縁収容筒42の蓋体部42b
を取り外して、本体部42aを開放した状態で、その本
体部42a内にて、コネクタ50により各信号線26,
46を接続した後、蓋体部42bを本体部42aに取り
付ければよい。従って、電流センサ24に対し光ファイ
バよりなる信号線を容易に接続することができて、その
接続作業を容易かつ短時間に行うことができる。Therefore, the lid portion 42b of the insulation containing cylinder 42
With the main body 42a opened by removing the signal line 26 by the connector 50 in the main body 42a.
After connecting 46, the lid 42b may be attached to the main body 42a. Therefore, the signal line made of an optical fiber can be easily connected to the current sensor 24, and the connection work can be performed easily and in a short time.
【0036】なお、この発明は、次のように変更して具
体化することも可能である。 (a)規制リング40またはストップリング41とし
て、Cリングに代え、ボルト36,37の所定位置に突
起を設けること。 (b)締付ボルト36,37として、それぞれ同一径の
ものを使用すること。 (c)一方のボルト36に設けられる規制手段を省略し
て、ボルト37に設けられる脱落防止手段と同じ構成と
すること。The present invention can be modified and embodied as follows. (A) As the restriction ring 40 or the stop ring 41, a protrusion is provided at a predetermined position of the bolts 36, 37 instead of the C ring. (B) Use the tightening bolts 36 and 37 that have the same diameter. (C) The restricting means provided on one of the bolts 36 should be omitted, and the same structure as the fall prevention means provided on the bolt 37 should be adopted.
【0037】また、前記実施例より把握される技術的思
想について、以下に記載する。 (1)前記第1分割コアの両端部の前後には、各一対の
ガイド突片を第1分割コアを収容するケース上に突出形
成するとともに、各一対のガイド孔を第2分割コアの両
端部の前後に位置するように、第2分割コアを収容する
ケースと第2絶縁被覆との間に形成した請求項1に記載
の電流検出器。この構成によれば、ガイド突片がガイド
孔に嵌合することによって、両分割コアを所定位置に係
合させることができる。 (2)ボルトの螺退回転を規制するための規制手段は、
ボルトに設けられたCリングと、ボルト挿通筒の段差部
上に設けられCリングが係合する係合部材とで構成され
る請求項2に記載の電流検出器。この構成により、両分
割体を一体に保持して電流検出器の電線への取付作業を
容易かつ短時間に行うことができる。 (3)ボルトの螺退時における脱落を防止するための脱
落防止手段は、Cリングと、そのCリングが係合するボ
ルト挿通筒の段差部とで構成される請求項2に記載の電
流検出器。この構成によれば、ボルトの螺退時における
脱落を容易かつ確実に防止することができる。 (4)前記コネクタは、一方の信号線の端部に固定され
た本体部と、その本体部に嵌着された割り溝を有するス
リーブと、他方の信号線に固定された接続部とから構成
される請求項3に記載の電流検出器。このように構成す
れば、両信号線の接続作業を容易かつ短時間に行うこと
ができる。Further, the technical idea understood from the above embodiment will be described below. (1) Before and after both ends of the first split core, a pair of guide projecting pieces are formed to project on a case that houses the first split core, and a pair of guide holes are provided at both ends of the second split core. The current detector according to claim 1, wherein the current detector is formed between the case that houses the second split core and the second insulating coating so as to be positioned in front of and behind the portion. With this configuration, the split cores can be engaged at the predetermined positions by fitting the guide protrusions into the guide holes. (2) The restricting means for restricting the screw backward rotation is
The current detector according to claim 2, comprising a C ring provided on the bolt, and an engaging member provided on the stepped portion of the bolt insertion tube and engaged with the C ring. With this configuration, the two divided bodies can be integrally held, and the work of attaching the current detector to the electric wire can be performed easily and in a short time. (3) The current detection according to claim 2, wherein the fall-out preventing means for preventing the bolt from falling off when it is screwed back is composed of a C ring and a stepped portion of the bolt insertion tube with which the C ring engages. vessel. With this configuration, it is possible to easily and surely prevent the bolt from falling off when the screw is retreated. (4) The connector includes a body portion fixed to one end of one signal line, a sleeve having a split groove fitted in the body portion, and a connection portion fixed to the other signal line. The current detector according to claim 3, which is provided. According to this structure, the work of connecting both signal lines can be performed easily and in a short time.
【0038】[0038]
【発明の効果】 この発明は、以上のように構成されて
いるため、次のような効果を奏する。請求項1の発明に
よれば、両分割体を電線の挟持状態に組み付けた後に、
それらの外周に絶縁カバーを装着する必要がなく、構造
が簡単で組付を容易に行うことができるとともに、全体
を小型にすることができる。EFFECTS OF THE INVENTION Since the present invention is configured as described above, it has the following effects. According to the invention of claim 1, after assembling the two divided bodies in a state of sandwiching the electric wire,
Since it is not necessary to attach an insulating cover to the outer periphery of them, the structure is simple and the assembling can be easily performed, and the entire size can be reduced.
【0039】請求項2に記載の発明によれば、ボルトを
取り付けたままの状態で、第2分割体を第1分割体に対
し開閉回動させて、電流検出器を電線に取り付けること
ができ、その取付作業を容易かつ短時間に行うことがで
きる。According to the second aspect of the invention, the current detector can be attached to the electric wire by rotating the second divided body with respect to the first divided body while opening and closing the bolt while the bolt is still attached. The mounting work can be performed easily and in a short time.
【0040】請求項3に記載の発明によれば、電流セン
サに対し光ファイバよりなる信号線を容易に接続するこ
とができて、その接続作業を容易かつ短時間に行うこと
ができる。According to the third aspect of the invention, the signal line made of the optical fiber can be easily connected to the current sensor, and the connecting work can be performed easily and in a short time.
【0041】請求項4に記載の発明によれば、第1ボル
トを中心にして、第2分割体を第1分割体に対し開閉回
動させることにより、電流検出器を電線に取り付けるこ
とができ、その取付作業を容易かつ短時間に行うことが
できる。According to the invention described in claim 4, the current detector can be attached to the electric wire by rotating the second divided body with respect to the first divided body about the first bolt. The mounting work can be performed easily and in a short time.
【図1】 この発明の電流検出器の一実施例を示す縦断
面図。FIG. 1 is a vertical sectional view showing an embodiment of a current detector of the present invention.
【図2】 その電流検出器における第1分割体の平面
図。FIG. 2 is a plan view of a first division body in the current detector.
【図3】 同じく第2分割体の底面図。FIG. 3 is a bottom view of the second divided body.
【図4】 図1の4−4線における断面図。FIG. 4 is a sectional view taken along line 4-4 of FIG.
【図5】 図1の5−5線における拡大断面図。5 is an enlarged cross-sectional view taken along line 5-5 of FIG.
【図6】 信号線のコネクタ部分を拡大して示す要部分
解断面図。FIG. 6 is an exploded cross-sectional view of an essential part showing a connector portion of a signal line in an enlarged manner.
【図7】 電流検出器を電線に取り付ける過程を示す要
部破断正面図。FIG. 7 is a fragmentary front view showing the process of attaching the current detector to the electric wire.
【符号の説明】 11…電流検出器、12…第1分割体、13…第2分割
体、15…電線、16…第1ホルダ、18…第1分割コ
ア、19…第1絶縁被覆、20…締付部としてのボルト
挿通筒、24…電流センサ、26…信号線、27…第2
ホルダ、29…第2分割コア、30…第2絶縁被覆、3
1…締付部としての雌ネジ筒、36…締付手段を構成す
る第1締付ボルト、37…締付手段を構成する第2締付
ボルト、38…段差部、39…バネ座金、40…規制手
段を構成する規制リング、41…脱落防止手段を構成す
るストップリング、42…絶縁収容筒、42a…本体
部、42b…蓋体部、45…外部引き出し用のケーブ
ル、46…信号線、50…コネクタ。[Explanation of Codes] 11 ... Current detector, 12 ... First split body, 13 ... Second split body, 15 ... Electric wire, 16 ... First holder, 18 ... First split core, 19 ... First insulating coating, 20 ... Bolt insertion cylinder as a tightening portion, 24 ... Current sensor, 26 ... Signal line, 27 ... Second
Holder, 29 ... Second split core, 30 ... Second insulating coating, 3
DESCRIPTION OF SYMBOLS 1 ... Female screw cylinder as a fastening part, 36 ... 1st fastening bolt which comprises a fastening means, 37 ... 2nd fastening bolt which comprises a fastening means, 38 ... Step part, 39 ... Spring washer, 40 ... a restricting ring that constitutes the restricting means, 41 ... a stop ring that constitutes the falling-off preventing means, 42 ... an insulating housing cylinder, 42a ... a main body part, 42b ... a lid part, 45 ... a cable for external drawing, 46 ... a signal line, 50 ... Connector.
Claims (4)
アを取着し、それらの外周に絶縁被覆を施してなる第1
分割体と、締付部を有する第2ホルダに第2分割コアを
取着し、それらの外周に絶縁被覆を施してなる第2分割
体と、第1分割体の第1分割コア中に介装された電流セ
ンサとを備え、第1分割体と第2分割体との間に電線を
挟持した状態で、両ホルダの締付部を締付手段により締
め付けて、電線上に装着するようにした電流検出器にお
いて、 前記各分割体の絶縁被覆は、締付部を含めてホルダ及び
分割コアの外周全体を包囲するように形成した電流検出
器。1. A first holder comprising a first holder having a tightening portion, a first split core attached to the first holder, and an insulating coating applied to the outer periphery of the first split core.
The second divided core is attached to the divided body and the second holder having the tightening portion, and the outer periphery of the second divided body is insulated, and the first divided core of the first divided body is interposed. A current sensor mounted on the electric wire, and the electric wire is sandwiched between the first divided body and the second divided body, so that the fastening portions of both holders are fastened by the fastening means and mounted on the electric wire. In the above current detector, the insulating coating of each of the divided bodies is formed so as to surround the entire outer circumference of the holder and the divided core including the tightening portion.
ら他方のホルダの締付部に螺合される一対のボルトより
なり、一方のボルトには所定以上の螺退回転を規制する
ための規制手段を設けるとともに、他方のボルトには螺
退時の脱落を防止するための脱落防止手段を設けた請求
項1に記載の電流検出器。2. The tightening means comprises a pair of bolts screwed from a tightening portion of one holder to a tightening portion of the other holder, and the one bolt restricts a screw retracting rotation more than a predetermined value. 2. The current detector according to claim 1, wherein the bolt detector is provided with a restricting means for preventing the other bolt from being removed when the screw is retracted.
向に沿って分割可能な絶縁収容筒を取り付け、その絶縁
収容筒内において、電流センサから延びる光ファイバの
信号線を、外部引き出し用の光ファイバの信号線に対
し、コネクタを介して接続した請求項1に記載の電流検
出器。3. A first holder of the first split body is provided with an insulating housing tube that can be split along the axial direction, and in the insulating housing tube, a signal line of an optical fiber extending from a current sensor is externally drawn out. The current detector according to claim 1, which is connected to a signal line of an optical fiber for use via a connector.
第1分割体と、第2分割コアを内装する第2分割体との
間に電線を挟持し、両分割体の締付部を一対のボルトに
より締め付けて、電流検出器を電線上に装着する電流検
出器の電線への取付方法において、 第1ボルトのみが所定量螺合されたままの状態で、その
第1ボルトを中心に第2分割体を第1分割体に対し相対
回動させて、第1分割体の電線挟持部を開放させ、 次に、その第1分割体の電線挟持部上に電線を挿入し、 さらに、前記第1ボルトを中心に第2分割体を第1分割
体に対し相対回動させて、第1分割体の電線挟持部を閉
鎖し、 その後、第1ボルトを締め付けるとともに、両分割体の
締付部に第2ボルトを螺合して、両分割体の分割コアを
結合する電流検出器の電線への取付方法。4. An electric wire is sandwiched between a first split body containing a first split core and a current sensor and a second split body containing a second split core, and a pair of tightening portions of both split bodies are provided. In the method of mounting the current detector on the electric wire by tightening the bolt, the current detector is attached to the electric wire. In the state in which only the first bolt is screwed in a predetermined amount, The two-divided body is rotated relative to the first divided body to open the electric wire holding portion of the first divided body, and then the electric wire is inserted onto the electric wire holding portion of the first divided body. The second split body is rotated relative to the first split body about the first bolt to close the wire holding portion of the first split body, and then the first bolt is tightened and both split bodies are tightened. The second bolt is screwed to the part to connect the split cores of both split bodies to the electric wire of the current detector. Method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7072021A JP2771468B2 (en) | 1995-03-29 | 1995-03-29 | Current detector structure and mounting method to electric wire |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7072021A JP2771468B2 (en) | 1995-03-29 | 1995-03-29 | Current detector structure and mounting method to electric wire |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08273951A true JPH08273951A (en) | 1996-10-18 |
JP2771468B2 JP2771468B2 (en) | 1998-07-02 |
Family
ID=13477347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7072021A Expired - Fee Related JP2771468B2 (en) | 1995-03-29 | 1995-03-29 | Current detector structure and mounting method to electric wire |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2771468B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2865542A1 (en) * | 2004-01-28 | 2005-07-29 | Johnson Controls Tech Co | Clamp-on ammeter for measuring electric current delivered by battery of motor vehicle, has clips and rods for clamping electric cable of battery along clamping axis parallel to plane extending between faces of air gap |
WO2011146195A1 (en) * | 2010-05-17 | 2011-11-24 | Abb Technology Ag | Line-powered instrument transformer |
WO2012142261A1 (en) * | 2011-04-14 | 2012-10-18 | Abb Technology Ag | Electrostatic shield for a transformer |
-
1995
- 1995-03-29 JP JP7072021A patent/JP2771468B2/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2865542A1 (en) * | 2004-01-28 | 2005-07-29 | Johnson Controls Tech Co | Clamp-on ammeter for measuring electric current delivered by battery of motor vehicle, has clips and rods for clamping electric cable of battery along clamping axis parallel to plane extending between faces of air gap |
WO2011146195A1 (en) * | 2010-05-17 | 2011-11-24 | Abb Technology Ag | Line-powered instrument transformer |
CN102906577A (en) * | 2010-05-17 | 2013-01-30 | Abb技术有限公司 | Line-powered instrument transformer |
US8749226B2 (en) | 2010-05-17 | 2014-06-10 | Abb Technology Ag | Line-powered instrument transformer |
CN102906577B (en) * | 2010-05-17 | 2015-11-25 | Abb技术有限公司 | Line powering mutual inductor |
WO2012142261A1 (en) * | 2011-04-14 | 2012-10-18 | Abb Technology Ag | Electrostatic shield for a transformer |
US9472337B2 (en) | 2011-04-14 | 2016-10-18 | Abb Schweiz Ag | Electrostatic shield for a transformer |
Also Published As
Publication number | Publication date |
---|---|
JP2771468B2 (en) | 1998-07-02 |
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