JP3139914B2 - Mold type current transformer - Google Patents
Mold type current transformerInfo
- Publication number
- JP3139914B2 JP3139914B2 JP06100685A JP10068594A JP3139914B2 JP 3139914 B2 JP3139914 B2 JP 3139914B2 JP 06100685 A JP06100685 A JP 06100685A JP 10068594 A JP10068594 A JP 10068594A JP 3139914 B2 JP3139914 B2 JP 3139914B2
- Authority
- JP
- Japan
- Prior art keywords
- current transformer
- main body
- partition wall
- secondary terminal
- type current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Insulating Of Coils (AREA)
- Housings And Mounting Of Transformers (AREA)
- Transformers For Measuring Instruments (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、絶縁ガスが封入された
電気機器に取り付けられるモールド形変流器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded current transformer which is mounted on an electric device filled with an insulating gas.
【０００２】[0002]
【従来の技術】ガス遮断器、ガス絶縁開閉装置等の絶縁
ガスが封入された電気機器に取り付けられる従来のモー
ルド形変流器は、図３〜図７のように構成されている。
図３は巻線形変流器の内部構造を示す断面図であり、図
４はその底面図である。図において、巻線形変流器１は
モールド材であるエポキシ樹脂２により下面に凸部３を
有する直方体に成形され、上面に一次端子４が配設さ
れ、下面の凸部３に二次端子５が配設されている。ま
た、凸部３の周囲が取付面となり、取付座６およびＯリ
ング溝７が形成されている。なお、８は一次巻線、９は
二次巻線、１１は鉄心、１２は二次リード線である。2. Description of the Related Art A conventional molded current transformer to be attached to an electric device filled with an insulating gas such as a gas circuit breaker or a gas insulated switchgear is constructed as shown in FIGS.
FIG. 3 is a sectional view showing the internal structure of the wound current transformer, and FIG. 4 is a bottom view thereof. In the figure, a wound current transformer 1 is formed into a rectangular parallelepiped having a convex portion 3 on a lower surface by an epoxy resin 2 as a molding material, a primary terminal 4 is disposed on an upper surface, and a secondary terminal 5 is disposed on the convex portion 3 on a lower surface. Are arranged. Further, the periphery of the projection 3 serves as a mounting surface, and a mounting seat 6 and an O-ring groove 7 are formed. In addition, 8 is a primary winding, 9 is a secondary winding, 11 is an iron core, and 12 is a secondary lead wire.
【０００３】図５は貫通形変流器の内部構造を示す断面
図であり、図６はその底面図である。図において、貫通
形変流器２１はモールド材であるエポキシ樹脂２２によ
り上半分が半円柱状に下半分が直方体状に形成され、下
面の中央に凸部２３が形成されている。また、凸部２３
に二次端子２５が配設され、凸部２３の周囲が取付面と
なり、取付座２６およびＯリング溝２７が形成されてい
る。なお、２８は一次導体、２９は二次巻線、３０は鉄
心、２４は二次リード線である。FIG. 5 is a sectional view showing the internal structure of a through-type current transformer, and FIG. 6 is a bottom view thereof. In the figure, the through-type current transformer 21 has an upper half formed into a semi-cylindrical shape and a lower half formed into a rectangular parallelepiped shape by an epoxy resin 22 as a molding material, and a convex portion 23 is formed at the center of the lower surface. Also, the protrusion 23
, A secondary terminal 25 is provided, the periphery of the projection 23 is a mounting surface, and a mounting seat 26 and an O-ring groove 27 are formed. 28 is a primary conductor, 29 is a secondary winding, 30 is an iron core, and 24 is a secondary lead wire.
【０００４】図７は図３に示した巻線形変流器１の取付
け例を示す断面図である。巻線形変流器１をガス絶縁機
器１５に取付けるには、先ず、ガス絶縁機器１５の外板
１６に形成された取付孔１７に、内側から凸部３を挿入
し、さらに、外板１６の外側から取付ボルト１８を取付
座６のネジ穴にねじ込むことで固定する。このとき、外
板１６に形成されている取付孔１７等の開口部は、凸部
３周囲の取付面により塞がれるとともに、Ｏリング溝７
にＯリング１９を挿着して外板１６の内面に圧着するこ
とで取付面が完全に密封され、ガス封入側と気中側とが
区分される。なお、図示しないが一次端子４には導体が
ボルト締めにより固定される。FIG. 7 is a sectional view showing an example of mounting the current transformer 1 shown in FIG. In order to attach the spiral current transformer 1 to the gas insulating device 15, first, the projection 3 is inserted from the inside into a mounting hole 17 formed in the outer plate 16 of the gas insulating device 15. The mounting bolt 18 is screwed into the screw hole of the mounting seat 6 from the outside to fix it. At this time, the opening such as the mounting hole 17 formed in the outer plate 16 is closed by the mounting surface around the convex portion 3 and the O-ring groove 7 is formed.
The mounting surface is completely sealed by inserting an O-ring 19 into the inner surface of the outer plate 16 and pressing the O-ring 19 on the inner surface of the outer plate 16 so that the gas-filled side and the aerial side are separated. Although not shown, a conductor is fixed to the primary terminal 4 by bolting.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、このよ
うに変流器と取り付けられる電気機器とのシールにＯリ
ングを用いた場合、シールの成否はＯリング溝の平滑度
（表面粗さ）と寸法精度に負うところが大きく、製造工
程およびその後の運搬時におけるＯリング溝の管理を厳
重にする必要がある。すなわち、モールド形変流器の場
合、成形時にヒケ等の注型不良がＯリング溝に生じる
と、その成形品は本体側が良品であっても不合格としな
ければならず、歩留りが悪くなる。However, when an O-ring is used for sealing between the current transformer and the electric device to be mounted, the success or failure of the seal depends on the smoothness (surface roughness) and dimensions of the O-ring groove. The accuracy is greatly affected, and it is necessary to strictly control the O-ring grooves during the manufacturing process and during subsequent transportation. That is, in the case of a molded current transformer, if a casting defect such as sink occurs in the O-ring groove during molding, the molded product must be rejected even if the main body side is good, resulting in a poor yield.
【０００６】また、モールド形変流器は一般に重量があ
るため、その後の運搬、試験時に誤ってＯリング溝に傷
を付けてしまいやすく、その場合は本体側に異常がなく
ても廃棄処分としなければならない。その反対に、Ｏリ
ング溝が合格でも本体側に不良が生じた場合も同様に本
体を廃棄処分としなければならない。このように絶縁ガ
スが封入された電気機器に取り付けられる従来のモール
ド形変流器はＯリング溝を有するため、製造時や運搬時
の管理が煩わしいという問題があった。本発明は上記問
題点を解決するためになされたもので、その目的とする
ところは、製造時の歩留りを向上するとともに、取扱を
容易にすることができるモールド形変流器を提供するこ
とにある。In addition, since the molded current transformer is generally heavy, the O-ring groove is likely to be erroneously damaged during subsequent transportation and testing. In that case, even if there is no abnormality on the main body side, it should be disposed of. There must be. Conversely, if the O-ring groove passes but a defect occurs on the main body side, the main body must be similarly disposed of. A conventional molded current transformer attached to an electric device in which an insulating gas is sealed in this way has an O-ring groove, and thus has a problem that management during manufacture and transportation is troublesome. The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a molded current transformer that can improve the yield at the time of manufacturing and facilitate handling. is there.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、 絶縁ガス封入電気機器の隔壁に固定さ
れるモールド形変流器であって、二次端子を有する本体
と、この本体にボルトにより固定される隔壁当接部とを
備えたモールド形変流器において、 前記隔壁当接部は、
前記本体に当接され、かつ平面外形がほぼ矩形であって
中央部に前記二次端子の端部を受容する凹部を有する取
付面と、前記隔壁の取付孔に嵌合され、かつ前記二次端
子に電気的に接続される二次端子を有する凸部と、この
凸部の基端部周囲に形成されて隔壁への固定に使用され
る複数の取付座と、これらの取付座を包囲するように形
成されたＯリング溝と、前記取付面の四隅を厚さ方向に
切除して形成され、かつ前記本体に固定するためのボル
トが貫通する段部と、を備えたものである。 SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a method of fixing an insulating gas-filled electrical device to a partition wall.
Body having a secondary terminal
And a partition contact portion fixed to the main body by bolts.
In the molded current transformer provided, the partition wall contact portion,
Abutting on the main body and having a substantially rectangular planar outer shape;
A recess having a central portion for receiving the end of the secondary terminal.
Attached to the mounting hole of the partition wall, and the secondary end
A convex portion having a secondary terminal electrically connected to the
It is formed around the base end of the protrusion and is used for fixing to the partition.
And a plurality of mounting seats
The formed O-ring groove and the four corners of the mounting surface in the thickness direction
A bolt formed by cutting and fixed to the body
And a step portion through which the pierced portion passes.
【０００８】[0008]
【作用】本発明においては、モールド形変流器が、本体
から隔壁当接部を分離した二分割の構造としてそれぞれ
別に成形される。本体と隔壁当接部との組み立ては、隔
壁当接部の二次端子を本体側に電気的に接続してから、
本体と隔壁当接部とをネジ止めにより固定して一体化す
る。また、両者は組み立後も分割可能であるから、一方
が不良となった場合は分解して、良品と交換することが
可能になる。According to the present invention, the mold type current transformer is separately formed as a two-part structure in which the partition wall contact portion is separated from the main body. Assembling the main body and the partition contact part, after electrically connecting the secondary terminal of the partition contact part to the main body side,
The main body and the partition contact portion are fixed by screwing and integrated. Also, since both can be divided even after assembling, if one becomes defective, it can be disassembled and replaced with a good product.
【０００９】[0009]
【実施例】以下、図に沿って本発明の実施例を説明す
る。図１は本発明を巻線形変流器に適用した場合の実施
例を示す断面図であり、図２は図１の底面図である。巻
線形変流器３１は、本体３２から隔壁当接部３３を分離
した二分割構造として、それぞれエポキシ樹脂により成
形した後、図１，図２に示すように組み立てられる。本
体３２の内部構造は、図３の従来例と共通であるので共
通な部分につては同一符号を付して説明を省略し、従来
例と異なる部分について説明する。本体３２の下面は隔
壁当接部３３との取付面であり、その中心部に二次端子
３５が配設されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an embodiment in which the present invention is applied to a wound current transformer, and FIG. 2 is a bottom view of FIG. The wound current transformer 31 has a two-part structure in which the partition wall contact part 33 is separated from the main body 32, and is formed by epoxy resin, and then assembled as shown in FIGS. Since the internal structure of the main body 32 is the same as that of the conventional example shown in FIG. 3, the same parts are denoted by the same reference numerals and the description thereof will be omitted, and the parts different from the conventional example will be described. The lower surface of the main body 32 is a mounting surface with the partition wall abutting portion 33, and a secondary terminal 35 is provided at the center thereof.
【００１０】二次端子３５にはネジ穴が形成されてお
り、組み立時にリード線３４が接続される。さらに、本
体３２の下面の四隅には、ネジ穴３６が形成されて、組
み立時に隔壁当接部３３の透孔４５から挿通されたボル
ト３７がねじ込まれて固定される。隔壁当接部３３は、
本体３２と同一の外周形状をし、下面の中心位置に凸部
３８が形成され、その反対面に凹部３９が形成されてい
る。凸部３８には上下方向に貫通して二次端子４１が配
設され、その上下端面ともネジ穴が形成されており、上
端のネジ穴は、組み立時にリード線３４が接続される。A screw hole is formed in the secondary terminal 35, and a lead wire 34 is connected during assembly. Further, screw holes 36 are formed in the four corners on the lower surface of the main body 32, and bolts 37 inserted through the through holes 45 of the partition wall abutting portion 33 are screwed and fixed at the time of assembly. The partition contact portion 33 is
It has the same outer peripheral shape as the main body 32, and has a convex portion 38 formed at the center position of the lower surface, and a concave portion 39 formed on the opposite surface. A secondary terminal 41 is provided in the protrusion 38 so as to penetrate in the vertical direction, and a screw hole is also formed on the upper and lower end surfaces of the secondary terminal 41. The lead hole 34 is connected to the screw hole on the upper end at the time of assembly.
【００１１】また、凸部３８は、取付け時に、取付け機
器の隔壁１６に形成されている取付孔１７に嵌合され
る。凸部３８の周囲は隔壁１６との当接面であり、隔壁
１６を取付けるための取付座４２およびＯリング溝４３
が形成されている。また、隔壁当接部３３の下面四隅
は、一段後退した段部４４が形成され、そこに本体３２
のネジ穴３６に対応する位置に透孔４５が形成されてい
る。この透孔４５から組み立時にボルト３７が挿通され
てネジ穴３６にねじ込まれる。このボルト３７の頭部は
段部４４により、隔壁当接部３３の下面よりも低くなる
ため、巻線形変流器３１が隔壁１６に取り付けられる際
の障害になることはない。The projection 38 is fitted into the mounting hole 17 formed in the partition 16 of the mounting device at the time of mounting. The periphery of the convex portion 38 is a contact surface with the partition 16, and a mounting seat 42 and an O-ring groove 43 for mounting the partition 16 are provided.
Are formed. Further, at the four lower corners of the partition wall abutting portion 33, a step portion 44 which is retreated one step is formed, and the main body 32 is formed there.
A through hole 45 is formed at a position corresponding to the screw hole 36 of FIG. A bolt 37 is inserted through the through hole 45 and screwed into the screw hole 36 during assembly. Since the head of the bolt 37 is lower than the lower surface of the partition wall contact portion 33 by the step portion 44, it does not become an obstacle when the wound current transformer 31 is attached to the partition 16.
【００１２】この実施例によると、別工程で成形された
本体３２と隔壁当接部３３とを組み合わさせて巻線形変
流器３１とすることにより、それぞれの工程で合格した
良品のみが組み合わせられるため、従来よりも歩留りが
向上する。また、いったん組み立てた後も、一方が破損
等で不良となれば、不良部分を交換することで残った他
方の良品を廃棄することなく再利用できるようになる。
なお、実施例は巻線形変流器について説明したが、貫通
形変流器についても同様に適用可能である。According to this embodiment, by combining the main body 32 and the partition wall abutting portion 33 formed in different steps to form the wound current transformer 31, only good products that have passed in each step can be combined. Therefore, the yield is improved as compared with the conventional case. In addition, even after once assembled, if one becomes defective due to breakage or the like, the defective part is replaced, so that the remaining good product can be reused without being discarded.
Although the embodiment has been described with respect to the winding type current transformer, the present invention can be similarly applied to a through current transformer.
【００１３】[0013]
【発明の効果】以上述べたように本発明によれば、モー
ルド形変流器を二分割構造として、Ｏリング溝が形成さ
れる隔壁内面との当接部を本体と別に成形し、その後に
本体に組込むようにしたため、成形された本体、当接部
の良品のみを組み合わせることにより、製造工程での歩
留りが向上する。また、組み立後に、運搬、試験等でい
ずれか一方が不良となった場合、他方の良品を廃棄する
ことなく再利用することが可能になる。As described above, according to the present invention, the mold type current transformer has a two-part structure, and the contact portion with the inner surface of the partition wall where the O-ring groove is formed is formed separately from the main body. Since it is incorporated in the main body, the yield in the manufacturing process is improved by combining only the molded main body and non-defective products in the contact portion. In addition, if one of them becomes defective in transportation, test, or the like after assembly, the other good product can be reused without being discarded.
【図１】本発明の実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】図１の底面図である。FIG. 2 is a bottom view of FIG.
【図３】従来例を示す断面図である。FIG. 3 is a sectional view showing a conventional example.
【図４】図３の底面図である。FIG. 4 is a bottom view of FIG. 3;
【図５】従来例を示す断面図である。FIG. 5 is a sectional view showing a conventional example.
【図６】図５の底面図である。FIG. 6 is a bottom view of FIG. 5;
【図７】従来例の取り付け例を示す断面図である。FIG. 7 is a cross-sectional view showing a mounting example of a conventional example.
４ 一次端子 ８ 一次巻線 ９ 二次巻線 １１ 鉄心 １２ 二次リード線 １６ 隔壁 １７ 取付孔 ３１ 巻線形変流器 ３２ 本体 ３３ 隔壁当接部 ３４ リード線 ３５ 二次端子 ３６ ネジ穴 ３７ ボルト ３８ 凸部 ３９ 凹部 ４１ 二次端子 ４２ 取付座 ４３ Ｏリング溝 ４４ 段部 ４５ 透孔 4 Primary Terminal 8 Primary Winding 9 Secondary Winding 11 Iron Core 12 Secondary Lead Wire 16 Partition Wall 17 Mounting Hole 31 Winding Current Transformer 32 Main Body 33 Partition Contact Section 34 Lead Wire 35 Secondary Terminal 36 Screw Hole 37 Bolt 38 Protrusion 39 Recess 41 Secondary terminal 42 Mounting seat 43 O-ring groove 44 Step 45 Through hole
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H01F 27/00,27/02,27/32 H01F 38/28,41/12 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) H01F 27/00, 27/02, 27/32 H01F 38/28, 41/12
Claims (1)
るモールド形変流器であって、二次端子を有する本体
と、この本体にボルトにより固定される隔壁当接部とを
備えたモールド形変流器において、 前記隔壁当接部は、 前記本体に当接され、かつ平面外形がほぼ矩形であって
中央部に前記二次端子の端部を受容する凹部を有する取
付面と、 前記隔壁の取付孔に嵌合され、かつ前記二次端子に電気
的に接続される二次端子を有する凸部と、 この凸部の基端部周囲に形成されて隔壁への固定に使用
される複数の取付座と、これらの取付座を包囲するよう
に形成されたＯリング溝と、 前記取付面の四隅を厚さ方向に切除して形成され、かつ
前記本体に固定するためのボルトが貫通する段部と、 を備えた ことを特徴とするモールド形変流器。1. An insulating gas-filled electric device which is fixed to a partition wall of an electric device.
Body having a secondary terminal
And a partition contact portion fixed to the main body by bolts.
In the mold-type current transformer provided, the partition wall contact portion is in contact with the main body, and has a substantially rectangular planar outer shape.
A recess having a central portion for receiving the end of the secondary terminal.
Attached to the mounting surface of the partition wall, and electrically connected to the secondary terminal.
A convex portion having a secondary terminal to be electrically connected, and formed around the base end of the convex portion and used for fixing to a partition wall
And a plurality of mounting seats
O-ring groove formed at the four corners of the mounting surface is cut off in the thickness direction, and
Mold type current transformer, characterized in that it and a stepped portion bolt through for fixing to the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06100685A JP3139914B2 (en) | 1994-04-14 | 1994-04-14 | Mold type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06100685A JP3139914B2 (en) | 1994-04-14 | 1994-04-14 | Mold type current transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07283053A JPH07283053A (en) | 1995-10-27 |
| JP3139914B2 true JP3139914B2 (en) | 2001-03-05 |
Family
ID=14280600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06100685A Expired - Fee Related JP3139914B2 (en) | 1994-04-14 | 1994-04-14 | Mold type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3139914B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002270420A (en) * | 2001-03-13 | 2002-09-20 | Sumitomo Wiring Syst Ltd | Coil unit |
| JP4844434B2 (en) * | 2007-03-05 | 2011-12-28 | トヨタ自動車株式会社 | Reactor fixing structure |
| KR100877450B1 (en) * | 2007-10-10 | 2009-01-07 | 김장수 | Split shape closed loop current transducer |
| DE102012107277B4 (en) * | 2012-08-08 | 2016-08-18 | Phoenix Contact Gmbh & Co. Kg | Current transformer with automatic short circuit device |
| DE102012018412B3 (en) * | 2012-09-17 | 2014-03-20 | Phoenix Contact Gmbh & Co. Kg | Current transformer with replaceable head |
| JP6147111B2 (en) * | 2013-06-25 | 2017-06-14 | 日置電機株式会社 | Mounting mechanism and measuring device |
| CN105845323B (en) * | 2016-05-24 | 2017-08-15 | 重庆华虹仪表有限公司 | Low voltage mutual inductor housing |
-
1994
- 1994-04-14 JP JP06100685A patent/JP3139914B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07283053A (en) | 1995-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5684445A (en) | Power transformer | |
| US4750030A (en) | Resin-molded semiconductor device having heat radiating plate embedded in the resin | |
| US10175269B2 (en) | Current detector | |
| JP3139914B2 (en) | Mold type current transformer | |
| US4538168A (en) | High power semiconductor package | |
| US5544002A (en) | High voltage capacitor and magnetron | |
| US11024453B2 (en) | Coil device | |
| US2431951A (en) | Terminal bushing | |
| US5191248A (en) | Connection for rotating diode package | |
| US6445569B1 (en) | Gas-insulated switchgear | |
| US4558399A (en) | Electrolytic capacitor and a process for producing the same | |
| US3925744A (en) | End cap for primary windings | |
| CN111986883B (en) | Solid-state transformer and preparation method thereof | |
| JP3381999B2 (en) | Epoxy resin mold bushing for gas switch airtight mounting | |
| KR101772411B1 (en) | insulation device for current transformer | |
| JP2001267157A (en) | Current transformer for high voltage | |
| JPH0121552Y2 (en) | ||
| JP2560370Y2 (en) | Vacuum interrupter and switchgear | |
| JPS6141415Y2 (en) | ||
| JP2511451Y2 (en) | High voltage transformer | |
| JPH04314316A (en) | Dry type high voltage capacitor | |
| JPS6241534Y2 (en) | ||
| JPS6334459Y2 (en) | ||
| JP3115747B2 (en) | Optical coupling device | |
| JPH0328510Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20001205 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091215 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121215 Year of fee payment: 12 |
|
| LAPS | Cancellation because of no payment of annual fees |