JPH0658857B2 - Winding method of zero-phase current transformer - Google Patents
Winding method of zero-phase current transformerInfo
- Publication number
- JPH0658857B2 JPH0658857B2 JP1216058A JP21605889A JPH0658857B2 JP H0658857 B2 JPH0658857 B2 JP H0658857B2 JP 1216058 A JP1216058 A JP 1216058A JP 21605889 A JP21605889 A JP 21605889A JP H0658857 B2 JPH0658857 B2 JP H0658857B2
- Authority
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- Japan
- Prior art keywords
- windings
- winding
- around
- same
- wound
- Prior art date
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、零相電流を検出する零相変流器の巻線方法に
関するものである。Description: TECHNICAL FIELD The present invention relates to a winding method for a zero-phase current transformer that detects a zero-phase current.
従来の零相変流器には、第８図示のように長円形に成形
したトラック型鉄心１を保護ケースで被い、その保護ケ
ースの１周に巻線８を均一に巻き付け、この巻線８の回
りにシールドを施し、巻線８の両端間に負担抵抗５を接
続してなるものが使用されており、またこの零相変流器
の巻線方法と異なる巻線方法として、第４図示のように
トラック型の鉄心１を保護ケースで被い、その保護ケー
スの回りのうち、長径側を２分する中心線２からみて一
方の半周部分と他方の半周部分とに、巻き回数が同じ
で、巻き方向が互に逆向きの巻線３、４を巻き付け、こ
れらの巻線３、４を互に並列に接続するとともに、負担
抵抗５を接続する方法や、第５図示のようにトラック型
鉄心１を保護ケースで被い、その保護ケースの回りのう
ち、鉄心１の長径側を２分する中心線２からみて両側の
弧状部分には、巻き回数が同じで、巻き方向が互に逆向
きの巻線３、４を巻き付け、この各巻線３、４の間隔部
分には、巻線３、４の半分の巻き回数の巻線６、７を巻
き付けるとともに、巻線６、７を直列に接続し、この直
列接続の巻線６、７と巻線３、４とを並列に接続し、そ
の接続点ａ、ｂ間に負担抵抗５を接続する方法が提案さ
れている。In a conventional zero-phase current transformer, a track-shaped iron core 1 formed in an elliptical shape as shown in FIG. 8 is covered with a protective case, and a winding 8 is evenly wound around one circumference of the protective case. A shield around 8 is used and a burden resistor 5 is connected between both ends of the winding 8. A winding method different from the winding method of this zero-phase current transformer is As shown in the figure, the track-shaped iron core 1 is covered with a protective case, and the number of windings around the protective case is one half circumference part and the other half circumference part viewed from the center line 2 that bisects the major diameter side. In the same manner, the windings 3 and 4 having opposite winding directions are wound, the windings 3 and 4 are connected in parallel with each other, and the burden resistor 5 is connected, or as shown in FIG. The track-type iron core 1 is covered with a protective case, and the long diameter side of the iron core 1 is surrounded by the protective case. Windings 3 and 4 having the same number of turns but opposite winding directions are wound around the arcuate portions on both sides of the center line 2 which is divided in two, and the winding portions 3 and 4 are wound at intervals between them. The windings 6 and 7 which are half the number of turns of the wires 3 and 4 are wound, the windings 6 and 7 are connected in series, and the windings 6 and 7 of this series connection and the windings 3 and 4 are connected in parallel. However, a method of connecting the burden resistor 5 between the connection points a and b has been proposed.
上記従来の巻線方法による零相変流器では、残留電流の
縮小化が困難であり、鉄などの磁性材でつくられた気中
開閉器などのケース内に入れると、１次電流によってシ
ールドに入り込む漏れ磁束の大きさ、流れが変わり、シ
ールドを一部通った漏れ磁束が鉄心内に入り、これが残
留電流となるため、特性が低下するという欠点があっ
た。It is difficult to reduce the residual current in the conventional zero-phase current transformer using the above winding method. Therefore, when the residual current is put in a case such as an air switch made of a magnetic material such as iron, it is shielded by the primary current. The size and flow of the leaking magnetic flux entering the core change, and the magnetic flux leaking through a part of the shield enters the iron core, which becomes a residual current, resulting in a drawback that the characteristics deteriorate.
本発明は、上記従来の欠点を解消しうる零相変流器を提
供することを目的とするものである。It is an object of the present invention to provide a zero-phase current transformer that can eliminate the above-mentioned conventional drawbacks.
上記の目的を達成するために、トラック型の鉄心を保護
ケースで被い、その保護ケースの回りのうち、鉄心の長
径側を２分する中心線からみて一方の半周部分と他方の
半周部分とに巻き数が同じで、巻き方向が互いに逆向き
の巻線３、４を巻き付け、この巻線３、４を並列に接続
するとともに、負担抵抗を接続してなる零相変流器の巻
線方法において、巻線３、４の回りにシールドを施し、
このシールドの回りに、巻線３、４と同じ巻き方の巻線
３′、４′を巻き付け、その巻線３′、４′を並列に接
続し、又は上記シールドの回りに、巻線３、４と同じ巻
き方で互いに間隔をおいた巻線３′、４′と、この巻線
３′、４′の間隔部分で巻線３′、４′の巻き回数の半
分の巻き回数の巻線６′、７′とを巻き付け、この巻線
６′、７′を直列に接続し、この直列接続の巻線６′、
７′と巻線３′、４′とを互いに並列に接続することに
より構成するものである。In order to achieve the above-mentioned object, a track-type iron core is covered with a protective case, and one half circumference portion and the other half circumference portion of the circumference of the protection case are seen from the center line that bisects the long diameter side of the iron core. A winding of a zero-phase current transformer in which windings 3 and 4 having the same number of turns but opposite winding directions are wound, the windings 3 and 4 are connected in parallel, and a load resistance is connected. In the method, a shield is applied around the windings 3 and 4,
Around the shield, windings 3'and 4'having the same winding manner as the windings 3 and 4 are wound, and the windings 3'and 4'are connected in parallel, or the winding 3'and 4'are wound around the shield. The windings 3'and 4 ', which are spaced from each other in the same winding manner as 4, and the windings 3'and 4'are half the number of windings of the windings 3'and 4'. Winding wire 6 ', 7', connecting the windings 6 ', 7'in series, winding 6'of this series connection,
7'and the windings 3 ', 4'are connected in parallel with each other.
上記の巻線方法による零相変流器を鉄心などの磁性材で
つくられた気中開閉器などのケースに入れて使用する
と、シールドの内側と外側の巻線にそれぞれ循環電流が
流れ、その循環電流によってシールドに入り込む漏れ磁
束が抑制され、また一部鉄心が入り込む磁束はシールド
の内側の巻線による循環電流により抑制され、殆ど鉄心
に入り込まなくなる。When the zero-phase current transformer by the above winding method is used by putting it in a case such as an air switch made of a magnetic material such as an iron core, circulating current flows in the inside and outside windings of the shield, respectively. The leakage magnetic flux that enters the shield due to the circulating current is suppressed, and the magnetic flux that partially enters the iron core is suppressed by the circulating current due to the winding inside the shield, and almost never enters the iron core.
以下図面にもとづいて本発明の実施例を説明すると、１
はトラック型の鉄心、９は鉄心１の内周から外周にかけ
て被う保護ケース、１０は保護ケース９の回りに巻き付
けた巻線で、これには、第４図示の巻線３、４を使用
し、又は第５図示の巻線３、４、６、７を使用し、又は
第８図示の巻線８の回りに後記の３′、４′、又は
３′、４′、６′、７′を巻き付けてなる巻線を使用す
る。１１は巻線１０の回りに施したシールドで、側面シ
ールド１１Ａ、１１Ｂ、と、外側シールド１１Ｃと、内
側シールド１１Ｄとからなる。１２はシールド１１の回
りに巻き付けた絶縁テープ、１３は絶縁テープ１２の上
からシールド１１に巻き付けた巻線で、これには、第６
図示のように第４図示の巻線３、４と同じ巻き方の巻線
３′、４′を使用し、この巻線３′、４′を並列に接続
するか、第７図示のように第５図示の巻線３、４、６、
７と同じ巻き方の巻線３′、４′、６′、７′を使用
し、巻線６′、７′を直列に接続し、この直列接続の巻
線６′、７′と、巻線３′、４′とを互に並列に接続す
るか、第６図示の巻線３′、４′と同じ巻線３′、
４′、又は第７図示の巻線３′、４′、６′、７′と同
じ巻線３′、４′、６′、７′を使用する。１４は巻線
１３の回りを被う外装テープである。An embodiment of the present invention will be described below with reference to the drawings.
Is a track-type iron core, 9 is a protective case that covers the iron core 1 from the inner circumference to the outer circumference, and 10 is a winding wound around the protection case 9. For this, the windings 3 and 4 shown in FIG. 4 are used. Or the windings 3, 4, 6, 7 shown in FIG. 5 are used, or 3 ', 4'or 3', 4 ', 6', 7 shown below around the winding 8 shown in FIG. 'Use a winding made by winding. Reference numeral 11 denotes a shield provided around the winding 10, and includes side shields 11A and 11B, an outer shield 11C, and an inner shield 11D. 12 is an insulating tape wound around the shield 11, 13 is a winding wound around the shield 11 from above the insulating tape 12,
As shown in the drawing, windings 3'and 4'having the same winding method as the windings 3 and 4 shown in the fourth drawing are used, and these windings 3'and 4'are connected in parallel, or as shown in the seventh drawing. The windings 3, 4, 6 shown in FIG.
The windings 3 ', 4', 6 ', 7'having the same winding method as that of 7 are used, and the windings 6', 7'are connected in series. Either the wires 3 ', 4'are connected in parallel with each other, or they are the same as the windings 3', 4'shown in FIG.
4 ', or the same winding 3', 4 ', 6', 7'as the winding 3 ', 4', 6 ', 7'shown in FIG. 7 is used. Reference numeral 14 is an exterior tape which covers the winding 13.
以上の巻線方法のうち、第５図示の巻線方法に第７図示
の巻線方法を組合せて製作された零相変流器１５と、こ
れと同一仕上り寸法、重量を有し、かつ第８図示の巻線
方法で製作された従来の零相変流器１６とを第９図示の
ように三相平衡の一次導体１７にセットし、それらに電
磁オシログラフ１８を接続して、同一零相出力時の残留
電流特性について比較実験をしたところ、表−Ｉの三相
一次導体の欄及び第１０図Ａのグラフに示す通りの実験
結果が得られ、また一次導体１７を単相一次導体に変
え、それの鉄心１に対する配置を左右対称、右寄り、左
寄りの３通りについて同様の比較実験をしたところ、表
−Ｉの単相導体の各配置欄及び第１０図Ｂ〜Ｄに示す通
りの実験結果が得られた。Of the above winding methods, the zero-phase current transformer 15 manufactured by combining the winding method shown in FIG. 5 with the winding method shown in FIG. 7, and having the same finished size and weight as those 8. A conventional zero-phase current transformer 16 manufactured by the winding method shown in FIG. 8 is set to a three-phase balanced primary conductor 17 as shown in FIG. 9, and an electromagnetic oscillograph 18 is connected to them to make the same. When a comparative experiment was carried out on the residual current characteristics at the time of zero-phase output, the experimental results as shown in the column of the three-phase primary conductor of Table-I and the graph of FIG. 10A were obtained, and the primary conductor 17 was set to the single-phase primary conductor. When the same comparative experiment was carried out for three types of conductors, which were symmetrical with respect to the iron core 1, symmetrical to the right, and to the left, as shown in each arrangement column of the single-phase conductor in Table-I and in FIGS. 10B to 10D. The experimental results were obtained.
これらの実験結果から、本発明の巻線方法による零相変
流器は、従来品に比し残留電流が著しく小さくなること
がわかる。From these experimental results, it can be seen that the zero-phase current transformer according to the winding method of the present invention has a significantly smaller residual current than the conventional product.
本発明は、叙上のように構成したから、従来品では困難
であった残留電流の縮小が可能になり、大きさが従来品
と同じであれば、残留電流を従来品の１０分の１程度に
縮小できるし、特性が従来品と同じであれば、仕上がり
寸法を大幅に小型化できる。また鉄心などの磁性材でつ
くられた気中開閉器などのケースに入れても、残留電流
の増加は殆どないなどの利点を有する。Since the present invention is configured as described above, it is possible to reduce the residual current, which was difficult with the conventional product. If the size is the same as the conventional product, the residual current is reduced to 1/10 of that of the conventional product. If the characteristics are the same as conventional products, the finished size can be significantly reduced. Further, even if it is put in a case such as an air switch made of a magnetic material such as an iron core, there is an advantage that the residual current hardly increases.
第１図はトラック型の鉄心に巻線とシールドを施した状
態の断面図、第２図はトラック型鉄心の正面図、第３図
はトラック型鉄心の側面図、第４図ないし第８図は巻線
の変更例をそれぞれ説明する図、第９図は本発明の巻線
方法による零相変流器と従来品との比較実験の様子を説
明する図、第１０図Ａ〜Ｄは実験結果を示すグラフであ
る。 １……鉄心、５……負担抵抗、９……保護ケース、１０
……巻線、１１……シールド、１３……巻線。 FIG. 1 is a cross-sectional view of a track-type iron core with windings and shields, FIG. 2 is a front view of the track-type iron core, FIG. 3 is a side view of the track-type iron core, and FIGS. Are diagrams for explaining examples of changing the windings, FIG. 9 is a diagram for explaining a comparative experiment of a zero-phase current transformer according to the winding method of the present invention and a conventional product, and FIGS. 10A to 10D are experiments. It is a graph which shows a result. 1 ... iron core, 5 ... burden resistance, 9 ... protective case, 10
… Winding, 11… Shield, 13… Winding.
Claims (3)
の保護ケースの回りのうち、鉄心の長径側を２分する中
心線からみて一方の半周部分と他方の半周部分とに巻き
回数が同じで、巻き方向が互いに逆向きの巻線３、４を
巻き付け、この巻線３、４を並列に接続するとともに、
負担抵抗を接続してなる零相変流器の巻線方法におい
て、巻線３、４の回りにシールドを施し、このシールド
の回りに、巻線３、４と同じ巻き方の巻線３′、４′を
巻き付け、その巻線３′、４′を並列に接続し、又は上
記シールドの回りに、巻線３、４と同じ巻き方で、互い
に間隔をおいた巻線３′、４′と、この巻線３′、４′
の間隔部分で巻線３′、４′の巻き回数の半分の巻き回
数の巻線６′、７′とを巻き付け、この巻線６′、７′
を直列に接続し、この直列接続の巻線６′、７′と巻線
３′、４′とを互いに並列に接続することを特徴とする
零相変流器 の巻線方法。Claim: What is claimed is: 1. A track-type iron core is covered with a protective case, and the number of windings around one side of the protective case is one half circumference and the other half circumference as seen from the center line that bisects the major axis of the iron core. In the same way, the windings 3 and 4 whose winding directions are opposite to each other are wound, and the windings 3 and 4 are connected in parallel,
In a winding method for a zero-phase current transformer in which burden resistors are connected, a shield is provided around the windings 3 and 4, and a winding 3'having the same winding manner as the windings 3 and 4 is provided around this shield. , 4'are wound and their windings 3 ', 4'are connected in parallel, or windings 3', 4'with the same windings as the windings 3, 4 but spaced around each other around said shield. And this winding 3 ', 4'
The windings 6'and 7 ', which are half the number of windings of the windings 3'and 4', are wound in the interval portion of.
Is connected in series, and the windings 6 ', 7'and the windings 3', 4'connected in series are connected in parallel with each other, and a winding method for a zero-phase current transformer.
の保護ケースの回りのうち、鉄心の長径側を２分する中
心線からみて、両側に間隔をおいた弧状部分には、巻線
３を巻き付け、続けて巻く巻線４は巻線３と同じ巻き回
数で巻き方向が逆向きに巻き、巻線４の巻き終わりと巻
線３の巻き初めとを短絡させ、この短絡させた一端と巻
き方向を変える前の巻線３の巻き終わりとを出力端と
し、この巻線３、４の間隔部分には、巻線３、４の巻き
回数が半分の巻線６、７を巻き付け、この巻線６、７を
直列に接続し、この直列接続の巻線６、７と巻線３、４
とを互いに並列に接続し、この並列接続点間に負担抵抗
を接続してなる零相変流器の巻線方法において、巻線
３、４、６、７の回りにシールドを施し、このシールド
の回りに、巻線３、４と同じ巻き方の巻線３′、４′を
巻き付け、その巻線３′、４′を並列に接続し、又は上
記シールドの回りに、巻線３、４、６、７と同じ巻き方
の巻線３′、４′、６′、７′を巻き付け、巻線６′、
７′を直列に接続し、この直列接続の巻線６′、７′と
巻線３′、４′とを互いに並列に接続してなる零相変流
器の巻線方法。2. A track-type iron core is covered with a protective case, and windings are provided in arc-shaped portions spaced apart on both sides of the protective case from the center line that bisects the major axis side of the iron core. The winding 4 wound by winding 3 in succession has the same number of windings as the winding 3, but the winding direction is reversed, and the winding end of the winding 4 and the winding start of the winding 3 are short-circuited. And the end of winding of the winding 3 before changing the winding direction are used as output ends, and windings 6 and 7 having half the number of windings of the windings 3 and 4 are wound around the space between the windings 3 and 4, The windings 6 and 7 are connected in series, and the windings 6 and 7 and the windings 3 and 4 connected in series are connected.
In a winding method for a zero-phase current transformer, in which the and are connected in parallel to each other and a burden resistance is connected between the parallel connection points, a shield is applied around the windings 3, 4, 6, and Windings 3'and 4'having the same winding manner as the windings 3 and 4, and connecting the windings 3'and 4'in parallel, or windings 3 and 4 around the shield. , 6 and 7, the windings 3 ', 4', 6'and 7'of the same winding method are wound, and the winding 6 ',
A winding method for a zero-phase current transformer, in which 7'is connected in series, and the windings 6'and 7'and the windings 3'and 4'connected in series are connected in parallel with each other.
の保護ケースの１周に均一に巻き付けた巻線８の両端間
に負担抵抗を接続してなる零相変流器の巻線方法におい
て、巻線８の回りに特許請求の範囲第１項記載の巻線
３、４と巻線の巻き方向及び巻線間の結線方法が同じ巻
線３′、４′、又は特許請求の範囲第２項記載の巻線
３、４、６、７と巻線の巻き方向及び巻線間の結線方法
が同じ巻線３′、４′、６′、７′を保護ケースの１周
に均一に巻き付けた巻線８の内側、又は外側に重ねて巻
き付け、これらの巻線の回りにシールドを施し、このシ
ールドの回りに巻線３′、４′と同じ巻線３′、４′又
は巻線３′、４′、６′、７′と同じ巻線３′、４′、
６′、７′を巻き付けてなる零相変流器の巻線方法。3. A winding method for a zero-phase current transformer in which a track-type iron core is covered with a protective case, and a burden resistance is connected between both ends of a winding 8 wound evenly around the protective case. The windings 3 and 4 according to claim 1 around the winding 8 and the windings 3'and 4'having the same winding direction and the same connection method between the windings, or The windings 3 ', 4', 6 ', 7'having the same winding direction and winding connection method as the windings 3, 4, 6, 7 described in the second paragraph are evenly arranged in one round of the protective case. Wound on the inside or outside of the winding 8 wound around, and shielded around these windings, and the same winding 3 ', 4'or winding 3', 4'or winding around this shield The same windings 3 ', 4'as the wires 3', 4 ', 6', 7 ',
A winding method for a zero-phase current transformer formed by winding 6'and 7 '.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1216058A JPH0658857B2 (en) | 1989-08-24 | 1989-08-24 | Winding method of zero-phase current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1216058A JPH0658857B2 (en) | 1989-08-24 | 1989-08-24 | Winding method of zero-phase current transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0380511A JPH0380511A (en) | 1991-04-05 |
| JPH0658857B2 true JPH0658857B2 (en) | 1994-08-03 |
Family
ID=16682618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1216058A Expired - Fee Related JPH0658857B2 (en) | 1989-08-24 | 1989-08-24 | Winding method of zero-phase current transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0658857B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2711308B2 (en) * | 1991-07-16 | 1998-02-10 | ミドリ安全株式会社 | Zero-phase current transformer |
| JP4648954B2 (en) * | 2003-06-10 | 2011-03-09 | ミドリ安全株式会社 | Zero phase current transformer |
| JP4584123B2 (en) * | 2005-11-22 | 2010-11-17 | 音羽電機工業株式会社 | Electrostatic shielding structure of lightning strengthened low voltage insulation transformer |
| JP5557308B2 (en) * | 2009-03-26 | 2014-07-23 | パナソニック株式会社 | Electric leakage detection device and method of arranging coils of electric leakage detection device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5943511A (en) * | 1982-09-03 | 1984-03-10 | Midori Anzen Kk | Current transformer |
-
1989
- 1989-08-24 JP JP1216058A patent/JPH0658857B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5943511A (en) * | 1982-09-03 | 1984-03-10 | Midori Anzen Kk | Current transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0380511A (en) | 1991-04-05 |
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