JPH09283357A - Current transformer - Google Patents
Current transformerInfo
- Publication number
- JPH09283357A JPH09283357A JP8115376A JP11537696A JPH09283357A JP H09283357 A JPH09283357 A JP H09283357A JP 8115376 A JP8115376 A JP 8115376A JP 11537696 A JP11537696 A JP 11537696A JP H09283357 A JPH09283357 A JP H09283357A
- Authority
- JP
- Japan
- Prior art keywords
- core
- current transformer
- zero
- phase
- transformer
- 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)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、変流器及び零相変
流器がエポキシ等のモールドにより一体化されてスイッ
チギヤに収納される変流装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current transformer in which a current transformer and a zero-phase current transformer are integrated by a mold such as epoxy resin and housed in a switch gear.
【0002】[0002]
【従来の技術】従来の変流装置につき、スイッチギヤの
概略図を示した図4、図4の主回路図の図5を参照して
説明する。それらの図において、1はスイッチギヤ本
体、2は本体1の前面の上部,下部の開口を閉塞した
扉、3は本体1内に立設された立設体、4は立設体3の
上部,下部に設けられた収納台、5は両収納台4の後方
の上部及び下部に設けられた固定接触子、6は両収納台
4にそれぞれ出入自在に収納されたガス遮断器、7はガ
ス遮断器6の後部の上側及び下側に設けられた可動接触
子であり、両固定接触子5に着脱自在に接触している。2. Description of the Related Art A conventional current transformer will be described with reference to FIGS. 4 and 5 showing a schematic diagram of a switchgear and a main circuit diagram of FIG. In these drawings, 1 is a switchgear main body, 2 is a door whose upper and lower openings are closed on the front surface of the main body 1, 3 is a standing body standing inside the main body 1, and 4 is an upper portion of the standing body 3. , A storage base provided in the lower part, 5 fixed contacts provided in the upper and lower rear parts of both storage bases 4, a gas circuit breaker housed in both storage bases 4 so as to be able to move in and out, and 7 a gas The movable contactors are provided on the upper side and the lower side of the rear part of the circuit breaker 6, and are in detachable contact with both the fixed contactors 5.
【0003】8は両収納台4間に設けられた母線であ
り、母線8に、一方の固定接触子5及び可動接触子7を
介してガス遮断器6の一端が接続されている。9は両ガ
ス遮断器6の後方に設けられたブッシング、10はブッ
シング9内に埋設された変流器、11は変流器10の円
環状のコア12を貫通した導体であり、一端が他方の固
定接触子5及び可動接触子7を介してガス遮断器6の他
端に接続されている。13は両導体11の他端に接続さ
れたケーブル、14は本体1の後側下部に設けられた零
相変流器であり、零相変流器14の円環状のコア15を
各ケーブル13が貫通している。Reference numeral 8 is a bus bar provided between the two storage stands 4, and one end of a gas circuit breaker 6 is connected to the bus bar 8 via one fixed contact 5 and one movable contact 7. 9 is a bushing provided behind both gas circuit breakers 6, 10 is a current transformer embedded in the bushing 9, 11 is a conductor penetrating an annular core 12 of the current transformer 10, and one end is the other. It is connected to the other end of the gas circuit breaker 6 via the fixed contact 5 and the movable contact 7. Reference numeral 13 is a cable connected to the other ends of both conductors 11, 14 is a zero-phase current transformer provided in the lower rear portion of the main body 1, and the annular core 15 of the zero-phase current transformer 14 is connected to each cable 13 Has penetrated.
【0004】つぎに、他の従来の変流装置につき、スイ
ッチギヤの概略図及び主回路図の図6A,B、図6Aの
一部の切断正面図,一部切断平面図,左側面図,右側面
図,一部の斜視図を示した図7A,B,C,D,Eを参
照して説明する。Next, regarding another conventional current transformer, a schematic view of the switchgear and FIGS. 6A and 6B of the main circuit diagram, a partially cut front view, a partially cut plan view, a left side view, The description will be given with reference to FIGS. 7A, 7B, 7C, 7D, 7E, 7E, 7A, 7B, 7C, 7D, 7E, 7A, 7B, 7C, 7D, 7E, 7A, 7 </ b> B, 7 </ b> A, 7 </ b> B, 7 </ b> A, 7 </ b> A, 7 </ b> A, 7 </ b> A, 7 </ b> A, 7 </ b> A, 7 </ b> A, 7 </ b> A, 7 </ b> A, 7 </ b> A, and 7 </ b> E showing a right side view and a part of a perspective view.
【0005】それらの図において、16はスイッチギヤ
本体、17は本体16の前面の上部,中央部,下部の開
口を閉塞した扉、18は本体16の後面の開口を閉塞し
た扉、19は本体16に立設された立設体、20は中央
部の扉17に設けられた複数個の継電器、21は立設体
19の上部,下部に設けられた収納台、22は両収納台
21にそれぞれ収納されたガス遮断器、23は両収納台
21間に設けられた母線であり、母線23に両ガス遮断
器22のそれぞれの一端が接続されている。In these figures, 16 is a switchgear main body, 17 is a door whose upper, central, and lower openings on the front surface of the main body 16 are closed, 18 is a door whose rear opening is closed, and 19 is a main body. 16 standing body, 20 a plurality of relays provided on the central door 17, 21 is a storage stand provided on the upper and lower parts of the standing body 19, 22 is both storage stands 21 The stored gas circuit breakers, 23 are busbars provided between both storage bases 21, and one end of each of the gas circuit breakers 22 is connected to the busbar 23.
【0006】24は両ガス遮断器22の後部にそれぞれ
設けられた変流装置、25は左側の同一面に並設された
2個の変流器26の円環状のコア、27は両コア25に
平行に重合された図7Eに示す零相変流器28の楕円環
状のコア、29は3相分の1次導体であり、一端がガス
遮断器22の他端に接続され、2相の1次導体29がそ
れぞれ両変流器26のコア25を貫通し、3相分の1次
導体29が零相変流器28のコア27を貫通し、ケーブ
ル30に接続されている。Reference numeral 24 is a current transformer provided at the rear of each gas circuit breaker 22, 25 is an annular core of two current transformers 26 juxtaposed on the same plane on the left side, and 27 is both cores 25. 7E of the zero-phase current transformer 28 shown in FIG. 7E, which is superposed in parallel with the core, 29 is a primary conductor for three phases, one end of which is connected to the other end of the gas circuit breaker 22 and which has two phases. The primary conductors 29 pass through the cores 25 of both current transformers 26, and the primary conductors 29 for three phases pass through the cores 27 of the zero-phase current transformers 28 and are connected to the cable 30.
【0007】31は両変流器26のコア25及び零相変
流器28のコア27を一体に被覆したエポキシ等のモー
ルド、32はモールド31の右側面に一体に突設され,
それぞれ各1次導体29の他端を覆った被覆体、33は
モールド31の右側面の上部に導出された複数個の2次
端子である。31 is a mold made of epoxy or the like integrally covering the core 25 of both current transformers 26 and the core 27 of the zero-phase current transformer 28, and 32 is integrally provided on the right side surface of the mold 31 so as to project.
Each of the primary conductors 29 covers the other end of the primary conductor 29, and 33 is a plurality of secondary terminals led to the upper part of the right side surface of the mold 31.
【0008】34は上部のガス遮断器22の後方に設け
られた断路器であり、両端部が1次導体29の他端に接
続されている。35は断路器34の後方に設けられた断
路器34の操作器である。Reference numeral 34 is a disconnecting switch provided behind the upper gas circuit breaker 22, and both ends thereof are connected to the other end of the primary conductor 29. Reference numeral 35 is an operation device of the disconnector 34 provided behind the disconnector 34.
【0009】[0009]
【発明が解決しようとする課題】従来の前記図7の変流
装置24の場合、図7Eに示すように、零相変流器28
のコア27の形状が楕円環状であるため、零相変流器と
しての充分な特性を得ることが困難であるとともに、製
作も困難である。In the case of the conventional current transformer 24 of FIG. 7, as shown in FIG. 7E, the zero-phase current transformer 28 is used.
Since the core 27 has an elliptic ring shape, it is difficult to obtain sufficient characteristics as a zero-phase current transformer, and also difficult to manufacture.
【0010】しかも、零相変流器28の精度をよくする
には、コア27を大きくしたり、材料特性のよい高価な
コアを使用したりする必要がある。Moreover, in order to improve the accuracy of the zero-phase current transformer 28, it is necessary to enlarge the core 27 or use an expensive core having good material characteristics.
【0011】本発明は、前記の点に留意し、楕円環状の
コアを用いることなく、零相変流器としての充分な特性
が得られるとともに、コアが簡単に製作でき、安価で、
かつ、小形化が実現できる変流装置を提供することを目
的とする。In consideration of the above points, the present invention can obtain sufficient characteristics as a zero-phase current transformer without using an elliptic ring-shaped core, and the core can be easily manufactured at a low cost.
Moreover, it aims at providing the current transformer which can implement | achieve miniaturization.
【0012】[0012]
【課題を解決するための手段】前記課題を解決するため
に、本発明の変流装置は、同一面に並設された2個の変
流器の円環状のコアと、両コアに平行に重合された零相
変流器の円環状のコアと、零相変流器のコアのみを貫通
した1相の1次導体と、両変流器のコアをそれぞれ貫通
し,折曲部を経て零相変流器のコアを貫通した2相の1
次導体と、両変流器のコア及び零相変流器のコアを一体
に被覆したモールドとを備えたものである。In order to solve the above-mentioned problems, the current transformer of the present invention has an annular core of two current transformers arranged in parallel on the same plane, and parallel to both cores. Toroidal core of polymerized zero-phase current transformer, 1-phase primary conductor that penetrates only the core of zero-phase current transformer, and cores of both current transformers, and through the bent part Two-phase one through the core of zero-phase current transformer
It is provided with a secondary conductor and a mold in which the cores of both current transformers and the core of the zero-phase current transformer are integrally covered.
【0013】従って、零相変流器のコアが円環状であ
り、その円環状のコアを、2相の1次導体が折曲部を経
て貫通しているため、零相変流器としての充分な特性が
得られるとともに、高価なコアが不要になり、コアの製
作も容易になり、安価で、かつ、小形化が実現される。Therefore, the core of the zero-phase current transformer has an annular shape, and the two-phase primary conductors penetrate through the annular core through the bent portions, so that the zero-phase current transformer serves as a zero-phase current transformer. Sufficient characteristics can be obtained, an expensive core is not required, the core can be easily manufactured, and the cost can be reduced and the size can be reduced.
【0014】[0014]
【発明の実施の形態】実施の1形態につき、一部切断正
面図を示した図1、図1の平面図を示した図2、左側面
図及び右側面図を示した図3A,Bを参照して説明す
る。それらの図において、図7と同一符号は同一もしく
は相当するものを示し、異なる点はつぎのとおりであ
る。1 shows a partially cut front view, FIG. 2 shows a plan view of FIG. 1, and FIGS. 3A and 3B show a left side view and a right side view according to an embodiment of the present invention. It will be described with reference to FIG. In these figures, the same symbols as those in FIG. 7 indicate the same or corresponding ones, and the different points are as follows.
【0015】同一面に並設された2個の変流器26の円
環状のコア25の右側に、平行に零相変流器36の円環
状のコア37が重合され、中央部の1相の1次導体29
の他端が零相変流器36のコア37のみを貫通し、両側
の2相の1次導体29の一端が両変流器26のコア25
をそれぞれ貫通し、内側に折曲された折曲部38を経て
2相の1次導体29の他端が零相変流器36のコア37
を貫通し、エポキシ等のモールド39により両変流器2
6のコア25及び零相変流器36のコア37を一体に被
覆し、モールド39の左側前面に2次端子33が導出さ
れている。On the right side of the annular core 25 of the two current transformers 26 arranged in parallel on the same plane, the annular core 37 of the zero-phase current transformer 36 is superposed in parallel, and one phase in the central portion is formed. Primary conductor 29
Of the two-phase primary conductors 29 on both sides penetrates only the core 37 of the zero-phase current transformer 36.
And the other end of the two-phase primary conductor 29 through the bent portion 38 that is bent inward.
Both current transformers 2 through the mold 39 such as epoxy
The core 25 of No. 6 and the core 37 of the zero-phase current transformer 36 are integrally covered, and the secondary terminal 33 is led out to the left front surface of the mold 39.
【0016】[0016]
【発明の効果】本発明は、以上説明したように構成され
ているため、つぎに記載する効果を奏する。本発明の変
流装置は、同一面に並設された2個の変流器26の円環
状のコア25に平行に、零相変流器36の円環状のコア
37を重合し、1相の1次導体29が零相変流器36の
コア37のみを貫通し、2相の1次導体29が両変流器
26のコア25をそれぞれ貫通し、折曲部38を経て零
相変流器36のコア37を貫通し、両変流器26のコア
25及び零相変流器36のコア37をモールド39によ
り一体に被覆したため、零相変流器36のコア37が円
環状であり、その円環状のコア37を、2相の1次導体
29が折曲部38を経て貫通することにより、零相変流
器としての充分な特性を得ることができるとともに、高
価なコアを不要にし、コアの製作を容易にし、安価で、
かつ、小形化を実現することができる。Since the present invention is constructed as described above, it has the following effects. The current transformer of the present invention superimposes the annular core 37 of the zero-phase current transformer 36 in parallel with the annular cores 25 of the two current transformers 26 arranged in parallel on the same plane to form one phase. Primary conductor 29 penetrates only the core 37 of the zero-phase current transformer 36, the two-phase primary conductor 29 penetrates the cores 25 of both current transformers 26, and the zero-phase transformer passes through the bent portion 38. Since the core 37 of the current transformer 36 is penetrated and the core 25 of both current transformers 26 and the core 37 of the zero-phase current transformer 36 are integrally covered with the mold 39, the core 37 of the zero-phase current transformer 36 has an annular shape. By passing the two-phase primary conductor 29 through the bent portion 38 through the annular core 37, sufficient characteristics as a zero-phase current transformer can be obtained and an expensive core can be obtained. Unnecessary, easy to make core, cheap,
Moreover, miniaturization can be realized.
【図1】本発明の実施の1形態の一部切断正面図であ
る。FIG. 1 is a partially cut front view of an embodiment of the present invention.
【図2】図1の平面図である。FIG. 2 is a plan view of FIG.
【図3】Aは図1の左側面図、Bは右側面図である。FIG. 3A is a left side view of FIG. 1, and B is a right side view.
【図4】従来例のスイッチギヤの概略図である。FIG. 4 is a schematic view of a conventional switchgear.
【図5】図4の主回路図である。FIG. 5 is a main circuit diagram of FIG.
【図6】Aは他の従来例のスイッチギヤの概略図、Bは
Aの主回路図である。6A is a schematic view of another conventional switchgear, and B is a main circuit diagram of A. FIG.
【図7】Aは図6Aの一部の切断正面図、Bは一部切断
平面図、Cは左側面図、Dは右側面図、EはAの一部の
斜視図である。7A is a partially cutaway front view of FIG. 6A, B is a partially cutaway plan view, C is a left side view, D is a right side view, and E is a partially perspective view of FIG.
25 コア 26 変流器 29 1次導体 36 零相変流器 37 コア 38 折曲部 39 モールド 25 core 26 current transformer 29 primary conductor 36 zero-phase current transformer 37 core 38 bent portion 39 mold
Claims (1)
状のコアと、 この両コアに平行に重合された零相変流器の円環状のコ
アと、 前記零相変流器のコアのみを貫通した1相の1次導体
と、 前記両変流器のコアをそれぞれ貫通し,折曲部を経て前
記零相変流器のコアを貫通した2相の1次導体と、 前記両変流器のコア及び前記零相変流器のコアを一体に
被覆したモールドとを備えたことを特徴とする変流装
置。1. An annular core of two current transformers arranged in parallel on the same plane, an annular core of a zero-phase current transformer superposed in parallel with both cores, and the zero-phase transformer. 1-phase primary conductor penetrating only the core of the current transformer, and 2-phase primary conductor penetrating the cores of both the current transformers and passing through the core of the zero-phase current transformer through the bent portion. And a mold in which the cores of the both current transformers and the core of the zero-phase current transformer are integrally covered.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8115376A JPH09283357A (en) | 1996-04-11 | 1996-04-11 | Current transformer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8115376A JPH09283357A (en) | 1996-04-11 | 1996-04-11 | Current transformer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09283357A true JPH09283357A (en) | 1997-10-31 |
Family
ID=14661002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8115376A Pending JPH09283357A (en) | 1996-04-11 | 1996-04-11 | Current transformer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09283357A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003522390A (en) * | 2000-02-01 | 2003-07-22 | シーメンス アクチエンゲゼルシヤフト | Multi-pole low-voltage circuit breaker with per-pole current detection device |
EP3065239A4 (en) * | 2013-10-30 | 2017-03-08 | Mitsubishi Electric Corporation | Current transformer support device, and switchgear using said current transformer support device |
-
1996
- 1996-04-11 JP JP8115376A patent/JPH09283357A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003522390A (en) * | 2000-02-01 | 2003-07-22 | シーメンス アクチエンゲゼルシヤフト | Multi-pole low-voltage circuit breaker with per-pole current detection device |
EP3065239A4 (en) * | 2013-10-30 | 2017-03-08 | Mitsubishi Electric Corporation | Current transformer support device, and switchgear using said current transformer support device |
US9847163B2 (en) | 2013-10-30 | 2017-12-19 | Mitsubishi Elctric Corporation | Current transformer support device and switchgear using current transformer support device |
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