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JPH066495Y2 - Resin molded transformer - Google Patents

Resin molded transformer

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Publication number
JPH066495Y2
JPH066495Y2 JP12802688U JP12802688U JPH066495Y2 JP H066495 Y2 JPH066495 Y2 JP H066495Y2 JP 12802688 U JP12802688 U JP 12802688U JP 12802688 U JP12802688 U JP 12802688U JP H066495 Y2 JPH066495 Y2 JP H066495Y2
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JP12802688U
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Japanese (ja)
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JPH0249113U (en )
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孝夫 前田
啓文 大坪
龍男 西澤
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富士電機株式会社
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Description

【考案の詳細な説明】 〔産業上の利用分野〕 この考案は、一次巻線と二次巻線が互いに別体に樹脂モールドされ、両巻線間が空気ギャップで絶縁された樹脂モールド変圧器、ことに前記空気ギャップの保持構造に関する。 Description of invention] [Field of the Industrial] This invention, the primary and secondary windings is resin-molded separately from one another, between the windings resin molded transformer, which is insulated with air gap , particularly to the holding structure of the air gap.

〔従来の技術〕 [Prior art]

第3図および第4図は樹脂モールド変圧器の従来構造を示す正面図および一部破砕側面図である。 FIGS. 3 and 4 is a front view and a partially exploded side view showing a conventional structure of the resin molded transformer. 図において、 In the figure,
1は巻鉄心であり、その二つの脚部にはそれぞれ互いに別体に樹脂モールドされた同筒状の内側巻線2および外側巻線3がギャップ長Gなる空気ギャップ4を保持して互いに同軸状に装着され、両巻線2および3の軸方向両端部がゴム弾性を有する絶縁支持材5および強化樹脂ブロックからなる絶縁支持材6を介して上下一対のフレーム7A,7B間に所定の締付荷重を保持して挟持されることにより、一体化された樹脂モールド変圧器が形成される。 1 is a wound core, coaxially holds the air gap 104 the two legs the cylindrical inner winding 2 and the outer winding is resin-molded separately from each other on the third is the gap length G Jo to be mounted, both windings 2 and a predetermined clamping the insulating support 5 and reinforced made of resin blocks insulating support member 6 through with a pair of upper and lower frames 7A, between 7B having axial end portions of the 3 rubber elasticity by being clamped to hold the urging force, an integrated resin molded transformer is formed. また、絶縁支持材5は空気ギャップ4側に凸部5 The insulating support 5 projecting portion 5 to the air gap 104 side
Bを持ち、この絶縁支持材が巻線の周方向に放射状に複数個配されることにより、両巻線間の空気ギャップ長G Has a B, by the insulating support material is disposed plurality radially in the circumferential direction of the winding, the air gap length G between both windings
が必要な耐電圧性能を保持するに必要な寸法に保持され、かつ両巻線が互いに同軸状に支持される。 It is held in the required dimensions to hold the withstand voltage performance required, and both the windings are supported coaxially with each other. さらに、 further,
絶縁支持材6の厚みを調整することにより、巻線端面と鉄心との間の空気ギャップ長Hが必要な耐電圧性能を保持するに必要な寸法に保持される。 By adjusting the thickness of the insulating support 6 is held in the required dimensions to the air gap length H holds the withstand voltage performance required between the winding end faces and the iron core.

〔考案が解決しようとする課題〕 [Challenges devised to be Solved]

上述の樹脂モールド変圧器の組立作業は、巻線2および3を横倒しにした状態で、鉄心窓8を包囲するロ字状にあらかじめ形成された巻鉄心1を斜め切断部1Aでコ字状に開き、これを横倒しされた内側巻線2の中空部に逐次挿入した後、斜め切断部1Aを再び結合するという手順で行われるが、その際二つの巻線がゴム弾性を有する絶縁支持材5の凸部5Bによって同軸状に保持されなければならない。 Assembly work of the resin molded transformer described above, in a state where the winding 2 and 3 sideways, the winding core 1 which is preliminarily shape of a rectangular surrounding the core window 8 in a U-shape in an oblique cut portion 1A open, after sequentially inserted it into the hollow portion of the overturning by inner winding 2, is performed in the procedure that again bind an oblique cut portion 1A, the insulating support that time two windings having rubber elasticity 5 It must be held coaxially by the protrusion 5B. したがって、凸部5Bの突き出し長さをある程度大きくするとともに、支持材をその両側から巻線に押し付ける治具を必要とするので、これらの部材や治具が巻鉄心の組み込み作業を妨害するという問題が生ずる。 Therefore, the length of the protruding convex portion 5B increased to some extent, because it requires a jig for pressing the winding support from both sides thereof, a problem that these members or jigs to interfere with the incorporation work of the winding core It occurs.

一方二つの巻線2および3相互間に耐電圧性能は主として空気ギャップ4の雷サージ電圧に対するフラッシオーバ電圧で決まるが、絶縁支持材5の凸部5Bの突き出し寸法を大きくすることによって、第5図に示すように樹脂モールド層2B,3Bで覆われたコイル導体2A,3 On the other hand it is determined by the two windings 2 and 3 withstand voltage performance between each other mainly flashover voltage lightning surge voltage of the air gap 104, by increasing the protruding dimension of the protruding portion 5B of the insulating support 5, the fifth a resin mold layer 2B, as shown in FIG., the coil conductor 2A is covered with 3B, 3
Bの端と凸部5Bとが互いにラップする状態になり、凸部5Bの下面が巻線間の電界と並行する形となるため、 Ready for the end and the convex portion 5B of B wraps each other, since the lower surface of the convex portion 5B is a form of parallel electric field between the windings,
その面に沿ってフラッシオーバ105が生じやすくなるという問題があり、ことに湾曲した樹脂モールド層と凸部5Bとの間に微小ギャップgが介在すると、誘電率の大きい支持材5と空気との静電容量分圧の原理に基づいて微小ギャップgに電界が集中し、フラッシオーバ電圧が一層低下する。 There is a problem that flashover 105 along its surface may easily occur, in particular when the minute gap g between the curved resin molded layer and the convex portion 5B is interposed between the large supporting member 5 and the air dielectric an electric field is concentrated on the minute gap g based on the principle of electrostatic capacitive division, flashover voltage is lowered further.

また、このような火花電圧の低下を防ぐために、巻線端部の樹脂モールド層2B,3Bの厚みd を第6図に示すようにd に増してコイル導体2A,3Aとのラップを防ぎ、凸部5Bの沿面方向の電界を緩和する方法も知られているが、その分巻線2,3の軸方向寸法が増し、 In order to prevent such a decrease in the spark voltage, a resin mold layer 2B of the winding end portion, the coil conductors 2A increasing the d 2 as shown in FIG. 6 the thickness d 1 of 3B, wrap with 3A prevent, is also known method of alleviating the tangential electric field of the projections 5B, the axial dimension of that amount windings 2 and 3 is increased,
変圧器が大型化するという問題を生ずる。 Transformer arises the problem of large-sized.

この考案の目的は、二つの巻線間の空気ギャップの保持構造の改善により、巻鉄心の組み込み作業を阻害せず、 The purpose of this invention is the improvement of the holding structure of the air gap between the two windings, does not inhibit the incorporation work of the winding core,
かつ巻線寸法を大型化せずに必要な耐電圧性能を得ることにある。 And it is to obtain a withstand voltage performance required without increasing the size of the winding dimensions.

〔課題を解決するための手段〕 [Means for Solving the Problems]

上記課題を解決するために、この考案によれば、鉄心脚部に互いに同軸状に所定の空気ギャップを保持して装着されたそれぞれ樹脂モールドされた内側巻線および外側巻線が、その軸方向両端部に放射状に複数個配された絶縁支持材により上下一対のフレーム間に支持されたものにおいて、前記空気ギャップ長に相応する長さの棒状のゴム弾性材からなり、その長さ方向の中間につば状の絶縁バリヤ部を有する絶縁スペーサを前記空気ギャップ中に複数個分布して備えてなるものとする。 In order to solve the above problem, according to this invention, the iron core legs, respectively resin molded mounted to maintain a predetermined air gap coaxially with one another the inner winding and the outer winding, the axial in those by a plurality disposed an insulating support radially at both ends are supported between a pair of upper and lower frame, the composed airgap rubber elastic material of the rod-like length corresponding to the length of the longitudinal direction intermediate and it made comprising in a plurality distributed in the air gap an insulating spacer having a flange-shaped insulating barrier portion.

〔作用〕 [Action]

上記手段において、棒状の両端面が内外樹脂モールド巻線に密接し中間部につば状の絶縁バリヤ部を有するゴム弾性材からなる絶縁スペーサを空気ギャップ内に分散して複数個設けて両巻線をギャップ長Gを維持して互いに同軸状に結合するよう構成したことにより、巻線外部への突出物が排除されて巻鉄心の組み込み作業が容易化されるとともに、巻線をその両端部で支持する絶縁支持材の凸部が排除されて空気ギャップの火花電圧の低下が阻止され、かつ絶縁スペーサのつば状の絶縁バリヤ部が棒状部の沿面放電を阻止するバリヤ効果を発揮することにより、両巻線間の空気ギャップのフラッシオーバ電圧を両巻線間に絶縁支持物が存在しない場合の空気ギャップの標準火花電圧に近づけることができる。 In the above means, both windings provided plurality in the insulating spacer end faces of the rod-shaped made of a rubber elastic material having a flange-shaped insulating barrier portion to the intermediate portion close to the inner and outer resin mold coil dispersed into the air gap the by constructing to bind to each other coaxially by keeping gap length G, with projections to winding the outside is embedded work simplification of being eliminated wound core, a winding at its both ends the convex portion of the insulating support member is eliminated which supports reduction in spark voltage of the air gap is prevented, and the flange-shaped insulating barrier portion of the insulating spacer exerts a barrier effect to prevent creeping discharge of the rod-like portion, it can be brought close to the standard spark voltage of the air gap when the insulating supporting material between the flashover voltage of the air gap both windings between the two windings is not present.

〔実施例〕 〔Example〕

以下この考案を実施例に基づいて説明する。 Hereinafter will be described with reference to this invention in the Examples.

第1図はこの考案の実施例装置を示す一部破砕側面図、 Figure 1 is partially exploded side view showing an embodiment apparatus of the invention,
第2図は実施例装置の要部を示す水平方向の断面図であり、従来装置と同じ部分には同一参照符号を用いることにより詳細な説明を省略する。 Figure 2 is a cross-sectional view in a horizontal direction illustrating the main part of the embodiment apparatus, a detailed description thereof is omitted by using the same reference numerals to the same parts as the conventional device. 図において、20はゴム弾性材からなる絶縁スペーサであり、内外一対の樹脂モールド巻線2および3相互間の空気ギャップ長Gに相応する棒状部21と、棒状部21の中間につば状に突設された絶縁バリヤ部22からなり、例えばエチレンプロピレンゴム(EPラバー)の成形体または注型体として形成される。 In the figure, 20 is an insulating spacer made of a rubber elastic material, collision between the rod-like portion 21 corresponding to the air gap length G between the inner and outer pair of the resin mold windings 2 and 3 mutually, the flange-like intermediate the rod portion 21 setting has been made of an insulating barrier 22 is formed, for example, as a compact or cast of ethylene-propylene rubber (EP rubber). このように形成された絶縁スペーサ20は、 The thus formed insulating spacer 20,
空気ギャップ4内に第1図に示すように上下方向に2個所,周方向に少くとも3個所,合計6個以上分散して配置することにより、空気ギャップ4は所定のギャップ長Gに保持されるとともに、二つの巻線が互いに同軸状に結合される。 Two places in the vertical direction as shown in FIG. 1 in an air gap 104, at least three locations in the circumferential direction, by arranging a total of 6 or more distributed manner, air gap 104 is maintained at a predetermined gap length G Rutotomoni, two windings are coupled coaxially to each other. また、二つの巻線2および3の軸方向両端部は、凸部を持たないゴム板15と、ブロック状の絶縁支持材6を介して上下一対のフレーム7A,7B間に所定の締付荷重を保持して挟持されることにより、巻鉄心1と一体化された樹脂モールド変圧器を形成することができる。 Also, both axial ends of the two windings 2 and 3, the rubber plate 15 having no protrusions, the block-shaped insulating support member 6 via a pair of upper and lower frames 7A, the load fastening pressure between 7B the by being clamped and held, it is possible to form the resin mold transformer integrated with wound core 1.

このように形成された実施例変圧器では、二つの巻線2,3を絶縁スペーサ20で空気ギャップ長Gを保持した状態で横倒しにでき、かつ絶縁支持材6および15を取り外した状態で巻鉄心1の組み込み作業が行えるので、巻鉄心の組み込み作業を容易化することができる。 In the thus formed embodiment transformer winding in a state where possible overturning while holding an air gap length G of the two windings 2,3 of an insulating spacer 20, and removal of the insulating support 6 and 15 since can be performed embedder of the core 1, it is possible to facilitate the incorporation work of the winding core.
また、絶縁スペーサ20がゴム弾性材で形成されて空気ギャップ4に挿入した際、その端面が二つの樹脂モールド巻線2および3の外周面および内周面に密着して微小な隙き間g(第5図参照)が排除されるので、棒状部2 Further, when the insulating spacer 20 is inserted is formed in the rubber elastic material in the air gap 104, between the end face-out small gap in close contact with the outer and inner peripheral surfaces of the two resin mold windings 2 and 3 g because (see FIG. 5) is eliminated, the bar-shaped portion 2
1の沿面放電の低下が軽減され、かつこの沿面放電のストリーマが電界に直交する方向の二つの面を持つつば状の絶縁バリヤ部22によりその進展が阻止されるので、 Is reduced decrease of 1 creeping discharge, and because streamer of this creeping discharge its progress is blocked by the flange-shaped insulating barrier 22 with two faces in the direction perpendicular to the electric field,
火花電圧を絶縁バリヤ部22を持たない棒状部だけのそれに比べて高めることができる。 The spark voltage can be increased as compared with that of only the rod-shaped portion having no insulating barrier section 22.

ちなみに、最大直径300mmのロゴウスキー電極を用い、棒状部21の直径30mm,その長さ30mm,絶縁バリヤ部22の直径50mm,厚み10mmのEPラバーを用いて一体成形された絶縁スペーサ20を上記電極間に挟み、標準波形(1×40μs)のインパルス電圧を印加してフラッシオーバ電圧を求め、ギャップ長30mmの平等電界大気圧空気ギャップの標準火花電圧と比較した結果、実施例絶縁スペーサのフラッシオーバ電圧は標準火花電圧の93%以上であることがわかった。 Incidentally, using a Rogowski electrode of maximum diameter 300 mm, diameter 30mm of rod portion 21, its length 30mm, diameter 50mm insulation barrier section 22, between the insulating spacers 20 integrally formed with the EP rubber thickness 10mm above electrodes the scissors, seeking flashover voltage impulses applied voltage of the standard waveform (1 × 40 [mu] s), the results were compared to a standard spark voltage uniform electric field atmospheric air gap of the gap length 30 mm, example insulating spacer of flashover voltage was found to be 93% or more of the standard spark voltage. また実施例絶縁スペーサ20の絶縁バリヤ部を削り取り、直径30 The scraped insulating barrier portion of the embodiment the insulating spacer 20, the diameter 30
mmの棒状部21のみとした比較例スペーサについフラッシオーバ電圧を求めたところ、標準火花電圧の75%程度の値を示し、実施例絶縁スペーサがそのバリヤ効果により、空気ギャップ4の耐電圧性能の向上に有効に機能することが実証された。 Was sought with flashover voltage in Comparative Example spacers were only mm of the rod-shaped portion 21, shows a value of about 75% of the standard flame voltage by the barrier effect Example insulating spacers, the air gap 104 of the withstand voltage performance it has been demonstrated to function effectively to improve.

なお、実施例スペーサは二つの樹脂モールド巻線の両端部からかなり軸方向中心側に寄った位置に配されるので、従来の絶縁支持材5の突部のようにコイル導体とラップすることによるフラッシオーバ電圧の低下(第5図参照)を生じないので、第6図のように巻線両端部の樹脂モールド層の厚みd を厚くする必要もなく、したがって巻線高さが増大することによる変圧器の大型化を回避することができる。 Since the embodiment spacer disposed in a position close fairly axially center side from both ends of the two resin molded winding, due to wrap the coil conductor as in the conventional projection of the insulating support 5 since no reduction in flashover voltage (see FIG. 5), it is not necessary to increase the thickness d 2 of the resin molded layer of the winding end portions as FIG. 6, thus the winding height is increased it is possible to avoid the transformer in size of the by.

〔考案の効果〕 [Effect of the proposed]

この考案は前述のように、二つの樹脂モールド巻線間の空気ギャップ長を、空気ギャップ長に相応する長さの棒状部とつば状の絶縁バリヤ部とが一体化成形されたゴム弾性材からなる絶縁スペーサ複数個によって保持するよう構成した。 This invention, as described above, the air gap length between the two resin molded winding a rubber elastic material and the rod-shaped portion of a length corresponding to the air gap length and the flange-shaped insulating barrier portion is integrally formed and configured to hold by comprising an insulating spacer plurality. その結果、巻線を横倒しにして巻鉄心の組み込み作業を行う際、巻線外部への突出物が排除されることによって作業が容易化され、また空気ギャップのフラッシオーバ電圧がゴム弾性を有することによる巻線への密着性および絶縁バリヤ部のストリーマの進展阻止作用とによって絶縁スペーサのフラッシオーバ電圧を平等電界空気ギャップの標準火花電圧に極めて近いレベルにまで向上でき、かつ従来装置のように巻線端部の樹脂モールド層の厚みを増す必要もないので、巻鉄心の組み込みが容易で、かつ内外巻線間の耐雷サージ電圧強度の高い樹脂モールド変圧器を、小形かつ安価に提供することができる。 As a result, when performing the embedder of wound core by winding sideways, work by protrusions of the winding outside is eliminated is facilitated, also possible flashover voltage of the air gap has a rubber elasticity adhesion and flashover voltage of the insulator spacer by the development inhibiting action of the streamer of the insulating barrier portion of the by winding can be improved to a level very close to the standard spark voltage uniform electric field air gap to and wound as in the conventional apparatus there is no need to increase the thickness of the resin mold layer line end, the incorporation of the wound core is easy, and the lightning surge voltage strength higher resin molded transformer between the inner and outer windings, to provide Katsu Ogata inexpensive it can.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

第1図はこの考案の実施例変圧器を示す一部破砕側面図、第2図は実施例装置の要部を示す水平方向の断面図、第3図および第4図は従来の変圧器を示す正面図および側面図、第5図は従来変圧器の要部を示す断面図、 Figure 1 is partially exploded side view showing an example transformer of this invention, cross-sectional view of a horizontal second figure showing the main part of the embodiment device, FIGS. 3 and 4 is a conventional transformer front view and a side view showing, Fig. 5 is a sectional view showing a main portion of a conventional transformer,
第6図は異なる従来の変圧器の要部を示す断面図である。 Figure 6 is a sectional view showing a main portion of a different conventional transformer. 1……巻鉄心、2……内側樹脂モールド巻線、3……外側樹脂モールド巻線、4……空気ギャップ、5,6…… 1 ...... wound core, 2 ...... inner resin mold windings, 3 ...... outer resin mold windings, 4 ...... airgap, 5,6 ......
絶縁支持材、5B……凸部、7A,7B……フレーム、 Insulating support member, 5B ...... protrusion, 7A, 7B ...... frame,
15凸部のない絶縁支持材、20……絶縁スペーサ、2 No insulating support material with 15 protrusion, 20 ...... insulating spacer, 2
1……棒状部、22……絶縁バリヤ部、G,H……空気ギャップ長、g……微小な隙間。 1 ...... rod portion, 22 ...... isolation barrier section, G, H ...... air gap length, g ...... small gap.

Claims (1)

    【実用新案登録請求の範囲】 [Range of utility model registration request]
  1. 【請求項1】鉄心脚部に互いに同軸状に所定の空気ギャップを保持して装着されたそれぞれ樹脂モールドされた内側巻線および外側巻線が、その軸方向両端部に放射状に複数個配された絶縁支持材により上下一対のフレーム間に支持されたものにおいて、前記空気ギャップ長に相応する長さの棒状のゴム弾性材からなり,その長さ方向の中間につば状の絶縁バリヤ部を有する絶縁スペーサを前記空気ギャップ中に複数個分布して備えてなることを特徴とする樹脂モールド変圧器。 1. A core leg coaxially each resin molding mounted to maintain a predetermined air gap the inner winding and the outer winding to one another, a plurality of arranged radially in the axial direction end portions and in those supported between a pair of upper and lower frame by an insulating support, the consist airgap rubber elastic material of the rod-like length corresponding to length and has a flange-shaped insulating barrier portion to the length direction intermediate resin molded transformer and characterized in that it comprises in a plurality distributed insulating spacers in said air gap.
JP12802688U 1988-09-30 1988-09-30 Resin molded transformer Active JPH066495Y2 (en)

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JPH0249113U true JPH0249113U (en) 1990-04-05
JPH066495Y2 true JPH066495Y2 (en) 1994-02-16

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Cited By (1)

* Cited by examiner, † Cited by third party
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US9160818B2 (en) 1999-09-21 2015-10-13 Sony Corporation Communication system and its method and communication apparatus and its method

Cited By (2)

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US9160818B2 (en) 1999-09-21 2015-10-13 Sony Corporation Communication system and its method and communication apparatus and its method
US9380112B2 (en) 1999-09-21 2016-06-28 Sony Corporation Communication system and its method and communication apparatus and its method

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JPH0249113U (en) 1990-04-05 application

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