JPS5826813B2 - three phase transformer - Google Patents
three phase transformerInfo
- Publication number
- JPS5826813B2 JPS5826813B2 JP54045370A JP4537079A JPS5826813B2 JP S5826813 B2 JPS5826813 B2 JP S5826813B2 JP 54045370 A JP54045370 A JP 54045370A JP 4537079 A JP4537079 A JP 4537079A JP S5826813 B2 JPS5826813 B2 JP S5826813B2
- Authority
- JP
- Japan
- Prior art keywords
- winding
- phase
- lead
- voltage
- low
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
- H01F27/2828—Construction of conductive connections, of leads
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Housings And Mounting Of Transformers (AREA)
Description
【発明の詳細な説明】
本発明は、例えば発電所の昇圧変圧器の如き低圧大電流
用巻線を備えた三相変圧器に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a three-phase transformer equipped with a low-voltage, high-current winding, such as a step-up transformer in a power plant.
一般に、低圧大電流の巻線に対しては、導体を巻線の並
列方向に並べた巻線層を１〜４個軸力向に並べ、これを
軸方向へ巻回しつつ、巻回の途中で導体を適当に転位し
ていく、いわゆる多重ヘリカル巻線が用いられている。In general, for low-voltage, high-current windings, one to four winding layers in which conductors are arranged in parallel to the windings are arranged in the axial force direction, and while winding in the axial direction, A so-called multiple helical winding is used, in which conductors are appropriately transposed.
このような巻線は、一般に電圧が１１〜３Ｏ−ＫＶ位の
発電機電圧に見合う電圧の三角形結線がされており、そ
の電流は５〜２０ＫＡに達する。Such windings are generally connected in a triangular manner with a voltage corresponding to the generator voltage of about 11 to 3 O-KV, and the current reaches 5 to 20 KA.
上記の如きヘリカル状巻線ではその巻端は、巻線の上下
にくるため、巻線下部からの大電流リードを、他相との
間で接続するように、タンク内の上方まで立ち上げてい
く必要がある。In a helical winding like the one above, the winding ends are above and below the winding, so the high current lead from the bottom of the winding should be raised above the tank so that it can be connected to other phases. We have to go.
また、巻線のリード線引き出し部分は大電流が流れるた
め、鉄心の当板、締付金具などに漏れ磁束による渦電流
損をひきおこすことになる。Further, since a large current flows through the lead wire extraction portion of the winding, eddy current loss due to leakage magnetic flux is caused in the backing plate of the iron core, the fastening metal fittings, etc.
このため、新しい巻線方式として、第１図に示すように
、二段のシリンドリカル巻線が用いられるようになった
。Therefore, as a new winding method, a two-stage cylindrical winding, as shown in FIG. 1, has been used.
この巻線は、平角線１をポリビニルホルマールなどで絶
縁被覆したものを、図示の如く転位しながら一体にまと
め、その上に紙巻絶縁２を施こした転位電線３を複数本
用い、絶縁筒４などの上へスペーサ５などをおいて軸方
向へ複数木蓮べて巻回している。This winding is made by combining rectangular wires 1 insulated with polyvinyl formal or the like by transposing them as shown in the figure, and using a plurality of transposed wires 3 on which paper-wrapped insulation 2 is applied. A spacer 5 or the like is placed on top of the magnet, and a plurality of magnolias are wound in the axial direction.
第１図の場合は、導体１１，１２，１３．１４の４本の
導体を並列に巻回した例を示している。In the case of FIG. 1, an example is shown in which four conductors 11, 12, 13, and 14 are wound in parallel.
このように第−巻線層６を巻回してその巻終りでは、最
初に巻終る導体１１より順次導体１２，１３．１４と第
二巻線層７へ渡っていく。In this way, when the first winding layer 6 is wound, at the end of the winding, the conductor 11 which is wound first passes to the conductors 12, 13, 14 and the second winding layer 7.
この状態では、第二巻線層７はスペーサ８などを介在さ
せて第−巻線層６の上へ巻回される。In this state, the second winding layer 7 is wound onto the second winding layer 6 with spacers 8 and the like interposed therebetween.
第二巻線層７の上端部は、第−巻線層６の上端の巻始め
と対向しており、最大の電圧が発生するから必要に応じ
て絶縁筒９などを挿入する。The upper end of the second winding layer 7 faces the winding start at the upper end of the second winding layer 6, and since the maximum voltage is generated, an insulating tube 9 or the like is inserted as necessary.
この絶縁筒９は、第二巻線層７の内側全長にわたって延
びていてもよく、絶縁筒９外側に別のスペーサ１０を置
くことも可能である。This insulating tube 9 may extend over the entire length inside the second winding layer 7, and it is also possible to place another spacer 10 outside the insulating tube 9.
このように、シリンドリカル巻線を二段に重ねることに
より、巻線の口出しは、第−巻線層６の巻始めと、第二
巻線層７の巻終りとなり、巻線下部よりのリード線引き
出しは不要となる。In this way, by stacking the cylindrical windings in two stages, the winding leads are the beginning of the first winding layer 6 and the end of the second winding layer 7, and the lead wire from the bottom of the winding. Withdrawals are no longer necessary.
第−巻線層６の口出しリード１５、第二巻線層Ｔの口出
しり一ド１６は巻線上部より引き出されるため、その電
流方向が逆向きとなり、引き出しリードによる磁束は相
互に打消されて、鉄心の当金や締付金具への磁束による
渦電流は減少する。Since the lead 15 of the first winding layer 6 and the lead 16 of the second winding layer T are drawn out from the upper part of the winding, their current directions are opposite, and the magnetic fluxes from the lead leads cancel each other out. , eddy currents due to magnetic flux to the iron core butt and fastening fittings are reduced.
しかしながら、このように引き出されたリード線は従来
構造によればそのままタンク内の上方に引き出され、こ
こで各相間の接続をなすように互に交叉させるか、ある
いはブッシング下部まで引き出して接続していた。However, according to the conventional structure, the lead wires pulled out in this way are either pulled out upwards into the tank, where they are crossed to form a connection between each phase, or they are pulled out to the bottom of the bushing and connected. Ta.
あるいは、各相とも二本のブッシングで引き出し外部で
三角形結線に接続していた。Alternatively, each phase was connected to a triangular connection outside the drawer using two bushings.
従って、このように構成することにより、鉄心上面に大
きな空間を必要とし、鉄道輸送などで輸送高さに制約が
ある場合には、リード線やその支持板を工場で取外し、
タンクのカバーを特別に製作の輸送カバーと交換し、こ
れを現地にて本来のタンクのカバーと再度交換の上り一
ド線を組立、再絶縁する必要があるなどの欠点があった
。Therefore, with this configuration, a large space is required on the top surface of the core, and if there are restrictions on transportation height due to railway transportation, etc., the lead wires and their support plates can be removed at the factory.
There were drawbacks such as the need to replace the tank cover with a specially manufactured transport cover, and then reassemble and re-insulate the upstream lead wire with the original tank cover on site.
本発明の目的は、上記欠点を解消し、鉄心上面に大きな
空間を不要として鉄道輸送時に輸送カバーを取付けるこ
となく、変圧器中身の気中露出時間を短縮し作業工数を
低減できる三相変圧器を提供することにある。The object of the present invention is to provide a three-phase transformer that eliminates the above-mentioned drawbacks, does not require a large space above the core, does not require the installation of a transport cover during railway transport, shortens the exposure time of the transformer contents to the air, and reduces the number of work steps. Our goal is to provide the following.
本発明の三相変圧器は、タンク内に配置された三相鉄心
に複数本の並列導体からなる二個の巻線層を直列接続し
てなる低圧シリンドリカル巻線と、高圧巻線とが同心配
置され、低圧シリンドリカル巻線は、第−及び第二巻線
層の巻始めと巻終りをそれぞれ上端部に配設し、かつ下
端にて互に直列に接続され、第−巻線層の口出しリード
は直上方向に巻線の端部絶縁物から引き出され、第二巻
線層の口出しリードは巻線端部で水平方行に引き出され
、上記それぞれの口出しリードはその一方が巻線端付近
とタンク間の空間を他相方向に延長され、所定の他相の
口出しリードと並べられてブッシングへ接続して所定の
三角結線を行うものである。The three-phase transformer of the present invention has a low-voltage cylindrical winding formed by connecting two winding layers made of a plurality of parallel conductors in series around a three-phase core placed in a tank, and a high-voltage winding concentrically. The low-voltage cylindrical windings are arranged such that the winding start and winding end of the first and second winding layers are respectively arranged at the upper end, and are connected in series with each other at the lower end, and the opening of the first winding layer is arranged at the lower end. The leads are pulled out from the end insulator of the winding in a direct upward direction, and the output leads of the second winding layer are pulled out horizontally at the end of the winding, and one of the output leads of each of the above is pulled out near the end of the winding. The space between the lead and the tank is extended in the direction of the other phase, and the lead is lined up with a predetermined lead of the other phase and connected to the bushing to form a predetermined triangular connection.
以下本発明の三相変圧器の一実施例を第２図、第３図に
より説明する。An embodiment of the three-phase transformer of the present invention will be described below with reference to FIGS. 2 and 3.
第２図において、鉄心２１は、当金２２、締金具２３、
ピン２４、連結金具２５により固定され、鉄心２１の脚
の外側には絶縁筒２６が配設され、絶縁筒２６の外側に
低圧巻線２７、主絶縁２８、高圧巻線２９が配置されて
いる。In FIG. 2, the iron core 21 includes a dowel 22, a fastener 23,
It is fixed by pins 24 and connecting fittings 25, and an insulating cylinder 26 is arranged on the outside of the leg of the iron core 21, and a low voltage winding 27, a main insulation 28, and a high voltage winding 29 are arranged outside the insulating cylinder 26. .
高圧巻線２９及び第一、第二巻線層６゜７からなる低圧
巻線２７の端部は、端部絶縁物３０により支持されクラ
ンプボルト３１を介し固定されている。The ends of the low voltage winding 27 consisting of the high voltage winding 29 and the first and second winding layers 6° 7 are supported by end insulators 30 and fixed via clamp bolts 31.
尚、３６は輸送限界である。大電流の低圧巻線２７の口
出しリード１５．１６は巻線上部より引き出され、この
うち、口出しリード１５は鉄心２１の脚部表面に沿って
上方へほぼ垂直状に引き出され、締金具２３の切込部よ
り上方へ導かれている。Note that 36 is the transportation limit. Output leads 15 and 16 of the high-current, low-voltage winding 27 are pulled out from the upper part of the winding, and among these, the output lead 15 is pulled out almost vertically upward along the leg surface of the iron core 21, and is pulled out from the fastener 23. It is guided upward from the notch.
そして、カバー３５の上部のポケット３７上にカバー３
９内に取付けられた低圧ブッシング３８に接続されるよ
うになっている。Then, the cover 3 is placed on the pocket 37 at the top of the cover 35.
9 is adapted to be connected to a low pressure bushing 38 mounted within.
一方、口出しリード１６は、端部絶縁物３０内に切欠き
を設け、この切欠き部分を水平方向に引き出されている
。On the other hand, the lead lead 16 is provided with a notch in the end insulator 30, and is pulled out horizontally through this notch.
この水平方向に引き出された口出しり一ド１６は、端部
絶縁物３０とタンク３４もしくはカバー３５とが形成す
る空間部を第２図において紙面と直角方向に連結リード
４０として引きまわされる。The lead 16 pulled out in the horizontal direction is routed through the space formed by the end insulator 30 and the tank 34 or the cover 35 as a connecting lead 40 in a direction perpendicular to the plane of the paper in FIG.
また、他相からの連結リード４１についても、同様にこ
の空間に引きまわされている。Further, connection leads 41 from other phases are similarly routed through this space.
この状態は、第３図に示すように、垂直に立ち上がる口
出しり一ド１５は、各相において垂直方向引き出しリー
ド５３，５４．５５の如く端部絶縁物３０を貫通し締金
具２３の間から引き出されている。In this state, as shown in FIG. 3, the vertically rising lead 15 penetrates the end insulator 30 like the vertical lead leads 53, 54, 55 from between the fasteners 23. It's being pulled out.
また、水平に導かれる口出しリード１６は、水平方向引
き出しリード５６，５７，５８の如く引き出され、連結
リード５９，６０．６１の如く水平方向に引きまわされ
た後、垂直方向引き出しリード５３，５４．５５に沿っ
て上方へ立ち上げられ第３図口に示す如く端子ａ、ｂ、
ｃを形成するようになっている。Further, the horizontally guided lead leads 16 are pulled out like the horizontal pull-out leads 56, 57, 58, and after being pulled out horizontally like the connecting leads 59, 60, 61, the vertical pull-out leads 53, 54 are pulled out. The terminals a, b,
c.
このように巻線上部へ引き出された低圧大電流用巻線の
口出しリード１５．１６の結線をカバ−３５上部で行う
ように変圧器上部を形成することにより変圧器の高さを
低くすることができる。The height of the transformer can be reduced by forming the upper part of the transformer so that the output leads 15 and 16 of the low-voltage, high-current winding drawn out to the upper part of the winding are connected at the upper part of the cover 35. Can be done.
従って、輸送限界３６内にカバー３５を形成することが
でき、このカバー３５上にポケツ）３７を取付け、ポケ
ット３７に取付けたブッシング３８に、接続リード４２
を介し接続し三角形結線を形成することができる。It is therefore possible to form a cover 35 within the transport limit 36, on which a pocket 37 is fitted, and to the bushing 38 fitted in the pocket 37 a connecting lead 42 is attached.
can be connected through to form a triangular connection.
変圧器の輸送時には、ポケット３７を切り離し、リード
線をカバー内へ曲げて、盲蓋をかぶせて鉄道輸送限界内
で輸送することができ、輸送カバーを設けたり、リード
線の再組立が不要となり、現地作業を短縮し、変圧器中
身の気中露出時間を大幅に短縮することができて信頼性
を向上できる。When transporting the transformer, the pocket 37 can be cut off, the lead wires bent into the cover, and a blind cover can be placed over the transformer to transport it within the limits of rail transport, eliminating the need to provide a transport cover or reassembling the lead wires. This reduces on-site work and significantly reduces the exposure time of the transformer contents to the air, improving reliability.
以上記述した如く本発明の三相変圧器は、鉄心上面に大
きな空間を不要として鉄道輸送時に輸送カバーを取付け
ることなく、変圧器中身の気中露出時間を短縮し作業工
数を低減できるなどの効果を有するものである。As described above, the three-phase transformer of the present invention does not require a large space above the core, does not require the installation of a transport cover during railway transportation, and has the advantage of shortening the exposure time of the transformer contents to the air and reducing the number of work hours. It has the following.
第１図は通常の大電流用二段シリンドリカル巻線を示し
、イは一部の縦断面図、川ま正面図、ハは巻線下部の転
位部斜視図、第２図は本発明の三相変圧器の一実施例の
リード接続部の断面部、第３図イは第２図のリード接続
部の締金具部分の斜視図、口はイの状態からの口出しリ
ード結線説明図である。
６・・・・・・第−巻線層、７・・・・・・第二巻線層
、１５゜１６・・・・・・口出しリード、２１・・・・
・・鉄心、２７・・・・・・低圧巻線、２９・・・・・
・高圧巻線、３０・・・・・・端部絶縁物、３４・・・
・・・タンク、３８・・・・・・低圧ブッシング。Fig. 1 shows a normal two-stage cylindrical winding for large currents, A is a partial vertical sectional view and a front view of the winding, C is a perspective view of a dislocation part at the bottom of the winding, and Fig. 2 is a three-stage cylindrical winding of the present invention. FIG. 3A is a cross-sectional view of a lead connection portion of an embodiment of a phase transformer, and FIG. 3A is a perspective view of a fastener portion of the lead connection portion in FIG. 6...Second winding layer, 7...Second winding layer, 15°16...Output lead, 21...
...Iron core, 27...Low voltage winding, 29...
・High voltage winding, 30... End insulator, 34...
... Tank, 38 ... Low pressure bushing.
Claims (1)
体からなる二個の巻線層を直列接続してなる低圧シリン
ドリカル巻線と、高圧巻線とを各相同心配置し、前記タ
ンクに連結するカバーにポケットタ形成して各巻線と接
続するブッシングを設け、上記各相の低圧シリンドリカ
ル巻線は、第−及び第二巻線層の巻始めと巻終りをそれ
ぞれ上端部に配設し、かつ下端にて互に直列に連らなる
と共に、各相の低圧シリンドリカル巻線は三角形結線を
行うものにおいて、上記カバーのポケットに各相１本の
ブッシングを設け、上記第−巻線層の口出しリードは直
上方向に巻線の端部絶縁物から引き出され、第二巻線層
の口出しリードは巻線端部で水平方向に引き出され、上
記それぞれの口出しリードはその一方がタンク内の巻線
端付近の空間を他相方向に延長され、所定の他相の口出
しリードと並べられて上記各相のブッシングへ接続して
所定の三角結線したことを特徴とする三相変圧器。1 A low-voltage cylindrical winding formed by connecting two winding layers consisting of a plurality of parallel conductors in series and a high-voltage winding are concentrically arranged in each phase on a three-phase iron core placed in a tank, and the tank A pocket-shaped bushing is provided on the cover connected to the windings, and the low-voltage cylindrical windings of each phase are arranged such that the winding start and winding end of the second and second winding layers are respectively arranged at the upper end. and the low-voltage cylindrical windings of each phase are connected in series at the lower end, and the low-voltage cylindrical windings of each phase are connected triangularly, one bushing for each phase is provided in the pocket of the cover, and the third winding layer The output lead of the second winding layer is pulled out from the winding end insulator in the direct upward direction, and the output lead of the second winding layer is pulled out horizontally at the end of the winding. A three-phase transformer characterized in that the space near the end of the winding is extended in the direction of other phases, and is lined up with a predetermined lead of the other phase and connected to the bushing of each phase to form a predetermined triangular connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54045370A JPS5826813B2 (en) | 1979-04-16 | 1979-04-16 | three phase transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54045370A JPS5826813B2 (en) | 1979-04-16 | 1979-04-16 | three phase transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55138813A JPS55138813A (en) | 1980-10-30 |
| JPS5826813B2 true JPS5826813B2 (en) | 1983-06-06 |
Family
ID=12717379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54045370A Expired JPS5826813B2 (en) | 1979-04-16 | 1979-04-16 | three phase transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5826813B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020202212A (en) * | 2019-06-06 | 2020-12-17 | 株式会社ダイヘン | Transformer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5386426A (en) * | 1977-01-11 | 1978-07-29 | Toshiba Corp | Tap winding of transformer |
-
1979
- 1979-04-16 JP JP54045370A patent/JPS5826813B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55138813A (en) | 1980-10-30 |
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