JPH104285A - Cable through-hole processing structure of electromagnetic shield layer - Google Patents
Cable through-hole processing structure of electromagnetic shield layerInfo
- Publication number
- JPH104285A JPH104285A JP8153797A JP15379796A JPH104285A JP H104285 A JPH104285 A JP H104285A JP 8153797 A JP8153797 A JP 8153797A JP 15379796 A JP15379796 A JP 15379796A JP H104285 A JPH104285 A JP H104285A
- Authority
- JP
- Japan
- Prior art keywords
- electromagnetic shield
- shield layer
- metal duct
- cable
- cylindrical body
- 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.)
- Granted
Links
Landscapes
- Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Installation Of Indoor Wiring (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、電磁シールド層の
ケーブル貫通部処理構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for processing a cable penetration portion of an electromagnetic shield layer.
【0002】[0002]
【従来の技術】近年、移動性の作業比率が高い建物(病
院、ホテル等)を中心に、ビル内内線電話のコードレス
化が計画されている。このような内線電話のコードレス
化の他にも各種OA端末機の無線化およびミリ波通信の
導入等を採用してきている。2. Description of the Related Art In recent years, cordless use of extension telephones in buildings has been planned mainly in buildings (hospitals, hotels, etc.) having a high work ratio of mobility. In addition to the use of cordless extension telephones, various types of OA terminals have been made wireless and millimeter-wave communication has been introduced.
【0003】しかし、これらの導入に当たっては、隣接
建物の同様な内線子機から生ずる混信防止や建物内で使
用しているコンピューター、医療機器、調理機器、照明
機器等の電子機器の回路から発生する電磁波によって引
き起こされる通信障害を防止目的で電磁シールド性能が
求められる。[0003] However, in the introduction of these, it is generated from circuits of electronic equipment such as computers, medical equipment, cooking equipment, lighting equipment and the like used in the building to prevent interference caused by similar extension handsets in adjacent buildings. Electromagnetic shielding performance is required to prevent communication failures caused by electromagnetic waves.
【0004】電気ケーブル類の配線に関するものでは、
通常、電波暗室等の高性能シールド施設では電気ケーブ
ル類のシールド貫通部には、内外部の伝導性ノイズの遮
断のために、図5に示すようなノイズフィルター1を回
路の各相に設置している。In connection with wiring of electric cables,
Normally, in a high-performance shield facility such as an anechoic chamber, a noise filter 1 as shown in FIG. 5 is installed in each phase of a circuit at a shield penetration part of an electric cable in order to cut off internal and external conductive noise. ing.
【0005】[0005]
【発明が解決しようとする課題】このようにシールド層
を貫通する回路の全てにノイズフィルター1を設置する
ということは、一般電力用、通信用、防災用または特殊
なオンライン用の全回路に対して、その各相にノイズフ
ィルターを1個ずつ設置することであり、これを一般オ
フィスに適用すると、回路種類、量の大きさからフィル
ターの設置スペース(シールド層に近接)が非常に大き
なものになる。Providing the noise filter 1 in all circuits penetrating the shield layer as described above means that all circuits for general power, communication, disaster prevention or special on-line circuits are used. This means that one noise filter is installed for each phase. If this is applied to a general office, the filter installation space (close to the shield layer) becomes extremely large due to the type and amount of circuit. Become.
【0006】さらに、このノイズフィルター1自体わり
とコストが高いものであり、また、その個数が多いこと
は接続工事や、建築的な付随工事(意匠的な配慮他)等
にも手数を要し、イニシャルコストの増加が大変大きく
なる。Further, the noise filter 1 itself is relatively expensive, and the large number of the filters necessitates troublesome work such as connection work and architectural accompanying work (design considerations, etc.). However, the initial cost increases significantly.
【0007】これに加えて、将来に電力需要の増加があ
ったり、テナント工事等の変更や追加を行う場合の対応
が極めて煩雑になる。[0007] In addition, in the future, there will be an increase in power demand, and changes or additions to tenant work or the like will be extremely complicated.
【0008】本発明の目的は前記の従来例の不都合を解
消し、既設のノイズフィルターを設置することなく、ス
ペースを取らずに、また、簡単かつ安価に伝導性ノイズ
の遮断ができる電磁シールド層のケーブル貫通部処理構
造を提供することにある。An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and to provide an electromagnetic shield layer capable of simply and inexpensively blocking conductive noise without installing an existing noise filter, saving space, and saving space. It is an object of the present invention to provide a structure for treating a cable penetration portion.
【0009】[0009]
【課題を解決するための手段】本発明は前記目的を達成
するため、第1に、電磁シールド層を金属製ダクトで貫
通させ、電磁シールド層のシールド材料とこの金属製ダ
クトを電気的に接続し、一方の端を金属製ダクトに接続
した電磁シールド材料による筒体をこの金属製ダクトに
延設するように設け、金属製ダクト内に敷設するケーブ
ル類は前記筒体も貫通させ、筒体の他方の端はケーブル
類の上から結束して止封すること、第2に、筒体は金属
製ダクトの両側に延設し、電磁シールド層の両側で各筒
体の他端でのケーブル類の結束を行うこと、第3に、筒
体は複数に重ねて設けること、第4に、結束端に導電性
ガスケット、導電性シール材等の導電性充填材を配設し
て隙間を減らしてから結束することを要旨とするもので
ある。According to the present invention, in order to achieve the above object, first, an electromagnetic shield layer is penetrated by a metal duct, and a shield material of the electromagnetic shield layer is electrically connected to the metal duct. Then, a cylinder made of an electromagnetic shielding material having one end connected to the metal duct is provided so as to extend to the metal duct, and cables laid in the metal duct also penetrate the cylinder, and The other end of the cable is tied up from the cables and sealed. Second, the cylinder extends on both sides of the metal duct, and the cable at the other end of each cylinder on both sides of the electromagnetic shield layer. Thirdly, a plurality of cylinders are provided in a stack, and fourthly, a conductive filler such as a conductive gasket and a conductive sealing material is disposed at a binding end to reduce a gap. The idea is to unite afterwards.
【0010】請求項1記載の本発明によれば、金属製ダ
クトとこの金属製ダクト内に敷設するケーブル類との間
に隙間があるとしても、この隙間の延長部は電磁シール
ド材料による筒体でカバーされ、また、金属製ダクトは
電磁シールド層のシールド材料と電気的接続があるの
で、筒体、金属製ダクト、電磁シールド層の導電性が連
続し、結束するケーブル類の束の単位で伝導性ノイズの
遮断が可能となる。According to the first aspect of the present invention, even if there is a gap between the metal duct and the cables laid in the metal duct, the extension of the gap is a cylindrical body made of an electromagnetic shielding material. In addition, since the metal duct has electrical connection with the shielding material of the electromagnetic shield layer, the conductivity of the cylinder, the metal duct, and the electromagnetic shield layer is continuous, and it is a unit of bundle of cables to be bundled. The conduction noise can be cut off.
【0011】請求項2記載の本発明によれば、前記作用
に加えて、電磁シールド層の両側で筒体による伝導性ノ
イズの遮断ができるので、シールド性能が高いものとな
る。According to the second aspect of the present invention, in addition to the above-described operation, since the conductive noise can be cut off by the cylindrical body on both sides of the electromagnetic shield layer, the shielding performance is improved.
【0012】請求項3記載の本発明によれば、電磁シー
ルド材料による筒体を複数重ねて設けることで、多重の
シールドが形成でき、シールド性能が高いものとなる。According to the third aspect of the present invention, multiple shields can be formed by stacking a plurality of cylinders made of an electromagnetic shield material, so that the shield performance is high.
【0013】請求項4記載の本発明によれば、筒体の端
の結束端は導電性充填材を配設して隙間を減らしている
のでシールド性能が高いものとなる。According to the present invention, the binding end of the cylindrical body is provided with the conductive filler to reduce the gap, so that the shielding performance is high.
【0014】[0014]
【発明の実施の形態】以下、図面について本発明の実施
の形態を詳細に説明する。図1は本発明の電磁シールド
層のケーブル貫通部処理構造の1実施形態を示す全体の
横断平面図、図2は同上要部を示す一部切欠いた平面図
で、図中2は電磁シールド層2aで囲撓した電磁シール
ドルーム、3は外部を示す。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an overall cross-sectional plan view showing an embodiment of a structure for treating a cable penetration portion of an electromagnetic shield layer according to the present invention, and FIG. 2 is a partially cutaway plan view showing a main part of the electromagnetic shield layer. The electromagnetic shield room surrounded by 2a indicates the outside.
【0015】電磁シールド層2aは、表面に導電性材料
を塗被したり、金属箔や金属板によるシールド材を付設
して電磁シールド性能を持たせた壁である。する。The electromagnetic shield layer 2a is a wall coated with a conductive material on its surface or provided with a shielding material such as a metal foil or a metal plate to provide electromagnetic shielding performance. I do.
【0016】電磁シールド層2aを貫通するように金属
製ダクト4を設け、一方の端を金属製ダクト4に接続し
た電磁シールド材料による筒体5を延設するように設け
た。金属製ダクト4は電磁シールド層2aの導電性材料
と電気的に接続させる。また、前記筒体5を構成する電
磁シールド材料は導電性を有する不織布、導電性を有す
る布、金属箔、導電性プラッスチック箔、導電性合成紙
等で、薄く、可撓性があるものが望ましい。A metal duct 4 is provided so as to penetrate the electromagnetic shield layer 2a, and a cylindrical body 5 made of an electromagnetic shield material having one end connected to the metal duct 4 is provided so as to extend. The metal duct 4 is electrically connected to the conductive material of the electromagnetic shield layer 2a. The electromagnetic shielding material constituting the cylindrical body 5 is desirably thin and flexible, such as a conductive nonwoven fabric, a conductive cloth, a metal foil, a conductive plastic foil, or a conductive synthetic paper. .
【0017】この金属製ダクト4を貫通するようにケー
ブル類6は敷設するが、その際、筒体5も貫通するよう
にし、この筒体5の前記金属製ダクト4に接続する端と
逆の端はケーブル類6の上から結束して止封する。The cables 6 are laid so as to penetrate the metal duct 4. At this time, the cylinder 5 is also penetrated, and the end of the cylinder 5 connected to the metal duct 4 is reversed. The ends are bundled from above the cables 6 and sealed.
【0018】この止封をより完全に行うには、結束端に
導電性ガスケット、ステンレス繊毛などの導電性シール
材等の導電性充填材7を配設して隙間を減らしてから結
束する。In order to complete the sealing completely, a conductive filler 7 such as a conductive gasket or a conductive sealing material such as stainless cilia is disposed at the binding end to reduce the gap and then bind.
【0019】このようにして金属製ダクト4とケーブル
類6とは隙間があるが、この隙間の延長部は電磁シール
ド材料による筒体5でカバーされ、また、先に述べたよ
うに金属製ダクト4は電磁シールド層2のシールド材料
と電気的接続があるので、筒体5、金属製ダクト4、電
磁シールド層2の導電性が連続し、結束するケーブル類
6の束の単位で伝導性ノイズの遮断が可能となる。As described above, there is a gap between the metal duct 4 and the cables 6. The extension of the gap is covered by the cylindrical body 5 made of the electromagnetic shielding material. 4 has electrical connection with the shield material of the electromagnetic shield layer 2, the conductive properties of the cylinder 5, the metal duct 4, and the electromagnetic shield layer 2 are continuous, and the conductive noise is a unit of a bundle of cables 6 to be bound. Can be cut off.
【0020】図3は本発明の第2実施形態を示すもの
で、筒体5は金属製ダクト4の両側に延設するように複
数を設け、電磁シールド層2aの両側で各筒体5の他端
でのケーブル類6の結束を行うようにした。FIG. 3 shows a second embodiment of the present invention. A plurality of cylinders 5 are provided so as to extend on both sides of a metal duct 4, and each cylinder 5 is provided on both sides of an electromagnetic shield layer 2a. The cables 6 are bound at the other end.
【0021】このように金属製ダクト4の両側で止封す
ることにより、シールド性能が高いものとなり、シール
ド性能の要求レベルが高い場合に対応できる。By sealing the metal duct 4 on both sides in this manner, the shielding performance is improved, and it is possible to cope with a case where the required level of the shielding performance is high.
【0022】図4は本発明の第3実施形態を示すもの
で、筒体5は複数に重ねて設けることとした。このよう
にすることで、多重のシールドが形成でき、前記第2実
施形態と同じくシールド性能が高いものとなる。FIG. 4 shows a third embodiment of the present invention, wherein a plurality of cylinders 5 are provided. By doing so, multiple shields can be formed, and the shielding performance is high as in the second embodiment.
【0023】また、前記図3における第2実施形態と図
4における第3実施形態を組み合わせてよりシールド性
能を高めることもできる。Further, the shielding performance can be further improved by combining the second embodiment in FIG. 3 and the third embodiment in FIG.
【0024】[0024]
【発明の効果】以上述べたように本発明の電磁シールド
層のケーブル貫通部処理構造は、既設のノイズフィルタ
ーを設置することなく、スペースを取らずに、また、簡
単かつ安価に伝導性ノイズの遮断ができるものである。As described above, according to the present invention, the structure for treating the cable penetrating portion of the electromagnetic shield layer does not require installation of an existing noise filter, does not take up space, and is simple and inexpensive. It can be shut off.
【図1】本発明の電磁シールド層のケーブル貫通部処理
構造の第1実施形態を示す全体の横断平面図である。FIG. 1 is an overall cross-sectional plan view showing a first embodiment of a cable penetration portion processing structure of an electromagnetic shield layer of the present invention.
【図2】本発明の電磁シールド層のケーブル貫通部処理
構造の第1実施形態での要部を示す一部切欠いた平面図
である。FIG. 2 is a partially cutaway plan view showing a main part of the first embodiment of the structure for processing a cable penetration portion of an electromagnetic shield layer of the present invention.
【図3】本発明の電磁シールド層のケーブル貫通部処理
構造の第2実施形態を示す要部の横断平面図である。FIG. 3 is a cross-sectional plan view of a main part showing a second embodiment of a cable penetration part processing structure of an electromagnetic shield layer of the present invention.
【図4】本発明の電磁シールド層のケーブル貫通部処理
構造の第3実施形態を示す要部の横断平面図である。FIG. 4 is a cross-sectional plan view of a main part showing a third embodiment of a cable penetrating portion processing structure of an electromagnetic shield layer of the present invention.
【図5】ノイズフィルターの斜視図である。FIG. 5 is a perspective view of a noise filter.
1…ノイズフィルター 2…電磁シールドルー
ム 2a…電磁シールド層 3…外部 4…金属製ダクト 5…筒体 6…ケーブル類 7…導電性充填材DESCRIPTION OF SYMBOLS 1 ... Noise filter 2 ... Electromagnetic shield room 2a ... Electromagnetic shield layer 3 ... Outside 4 ... Metal duct 5 ... Cylindrical body 6 ... Cables 7 ... Conductive filler
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中川 喜久雄 東京都港区元赤坂一丁目3番8号 鹿島建 設株式会社東京支店内 (72)発明者 戸田 幸生 埼玉県熊谷市末広四丁目14番1号 株式会 社リケン熊谷事業所内 (72)発明者 木下 昌吾 埼玉県熊谷市末広四丁目14番1号 株式会 社リケン熊谷事業所内 (72)発明者 河本 博 埼玉県熊谷市末広四丁目14番1号 株式会 社リケン熊谷事業所内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kikuo Nakagawa 1-3-8 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. Tokyo Branch (72) Inventor Yukio Toda 4--14 Suehiro, Kumagaya-shi, Saitama No. 1 Inside the Riken Kumagaya Plant (72) Inventor Shogo Kinoshita 4-14-1 Suehiro, Kumagaya City, Saitama Prefecture Inside the Riken Kumagaya Plant (72) Inventor Hiroshi Kawamoto 4-14 Suehiro, Kumagaya City, Saitama Prefecture No. 1 Inside the Riken Kumagaya Office
Claims (4)
せ、電磁シールド層のシールド材料とこの金属製ダクト
を電気的に接続し、一方の端を金属製ダクトに接続した
電磁シールド材料による筒体をこの金属製ダクトに延設
するように設け、金属製ダクト内に敷設するケーブル類
は前記筒体も貫通させ、筒体の他方の端はケーブル類の
上から結束して止封することを特徴とした電磁シールド
層のケーブル貫通部処理構造。1. A cylindrical body made of an electromagnetic shield material having an electromagnetic shield layer penetrated by a metal duct, electrically connecting a shield material of the electromagnetic shield layer to the metal duct, and having one end connected to the metal duct. Is provided so as to extend to the metal duct, the cables laid in the metal duct also penetrate the cylindrical body, and the other end of the cylindrical body is bound from above the cables and sealed. Characteristic electromagnetic shield layer cable penetration processing structure.
磁シールド層の両側で各筒体の他端でのケーブル類の結
束を行う請求項1記載の電磁シールド層のケーブル貫通
部処理構造。2. A cable penetrating portion of an electromagnetic shield layer according to claim 1, wherein the cylindrical body extends on both sides of the metal duct, and binds cables at the other end of each cylindrical body on both sides of the electromagnetic shield layer. Processing structure.
は請求項2記載の電磁シールド層のケーブル貫通部処理
構造。3. The structure for treating a cable penetration portion of an electromagnetic shield layer according to claim 1, wherein the plurality of cylinders are provided so as to overlap with each other.
ル材等の導電性充填材を配設して隙間を減らしてから結
束する請求項1ないし請求項3のいずれかに記載の電磁
シールド層のケーブル貫通部処理構造。4. The electromagnetic shielding layer according to claim 1, wherein a conductive filler such as a conductive gasket or a conductive sealing material is disposed at a binding end to reduce gaps and then bind. Cable penetration part processing structure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15379796A JP3190955B2 (en) | 1996-06-14 | 1996-06-14 | Electromagnetic shielding layer cable penetration structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15379796A JP3190955B2 (en) | 1996-06-14 | 1996-06-14 | Electromagnetic shielding layer cable penetration structure |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH104285A true JPH104285A (en) | 1998-01-06 |
JP3190955B2 JP3190955B2 (en) | 2001-07-23 |
Family
ID=15570347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15379796A Expired - Fee Related JP3190955B2 (en) | 1996-06-14 | 1996-06-14 | Electromagnetic shielding layer cable penetration structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3190955B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004327710A (en) * | 2003-04-24 | 2004-11-18 | Ricoh Co Ltd | Electronic application device |
JP2007109684A (en) * | 2005-10-11 | 2007-04-26 | Yazaki Corp | Shield structure of shielded line, and shielding method |
CN102573430A (en) * | 2010-12-16 | 2012-07-11 | 鸿富锦精密工业(深圳)有限公司 | Cargo data center and electromagnetic interference restraining device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101971555B1 (en) * | 2017-09-20 | 2019-04-23 | (주)지이엠플랫폼 | Bed device for 3D printer |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04297096A (en) * | 1991-03-26 | 1992-10-21 | Nippon Telegr & Teleph Corp <Ntt> | Electromagnetic shielding cover structure for cable lead-in opening |
JPH0521981A (en) * | 1991-07-10 | 1993-01-29 | Taisei Corp | Electromagnetic wave leakage preventive structure |
JPH05327268A (en) * | 1992-05-15 | 1993-12-10 | Mitsui Constr Co Ltd | Shielding structure of electromagnetic shielded room |
JPH06112681A (en) * | 1992-09-30 | 1994-04-22 | Kitagawa Ind Co Ltd | Closing structure of cylinder or bag and cylindrical body for electromagnetic shielding having such structure |
JPH07221484A (en) * | 1994-01-27 | 1995-08-18 | Tomoe Corp | Structure of attaching filter box to electromagnetic wave shielding wall |
JPH08274487A (en) * | 1995-04-03 | 1996-10-18 | Maeda Corp | Structure for preventing leakage of electromagnetic wave |
JPH09181478A (en) * | 1995-12-22 | 1997-07-11 | Shimizu Corp | Electromagnetic shielded building |
-
1996
- 1996-06-14 JP JP15379796A patent/JP3190955B2/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04297096A (en) * | 1991-03-26 | 1992-10-21 | Nippon Telegr & Teleph Corp <Ntt> | Electromagnetic shielding cover structure for cable lead-in opening |
JPH0521981A (en) * | 1991-07-10 | 1993-01-29 | Taisei Corp | Electromagnetic wave leakage preventive structure |
JPH05327268A (en) * | 1992-05-15 | 1993-12-10 | Mitsui Constr Co Ltd | Shielding structure of electromagnetic shielded room |
JPH06112681A (en) * | 1992-09-30 | 1994-04-22 | Kitagawa Ind Co Ltd | Closing structure of cylinder or bag and cylindrical body for electromagnetic shielding having such structure |
JPH07221484A (en) * | 1994-01-27 | 1995-08-18 | Tomoe Corp | Structure of attaching filter box to electromagnetic wave shielding wall |
JPH08274487A (en) * | 1995-04-03 | 1996-10-18 | Maeda Corp | Structure for preventing leakage of electromagnetic wave |
JPH09181478A (en) * | 1995-12-22 | 1997-07-11 | Shimizu Corp | Electromagnetic shielded building |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004327710A (en) * | 2003-04-24 | 2004-11-18 | Ricoh Co Ltd | Electronic application device |
JP2007109684A (en) * | 2005-10-11 | 2007-04-26 | Yazaki Corp | Shield structure of shielded line, and shielding method |
CN102573430A (en) * | 2010-12-16 | 2012-07-11 | 鸿富锦精密工业(深圳)有限公司 | Cargo data center and electromagnetic interference restraining device |
Also Published As
Publication number | Publication date |
---|---|
JP3190955B2 (en) | 2001-07-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69637029T2 (en) | MULTIPURPOSE WIRE FOR SURFACE MOUNTING | |
NZ333600A (en) | A dc transformer/reactor having insulated and screened winding conductors | |
WO2008108023A1 (en) | Electric compressor for automobile use | |
US20010045296A1 (en) | Multiple shielded cable | |
CN1302494C (en) | Transformer shielding | |
JP2010177138A (en) | Wiring duct | |
JP3190955B2 (en) | Electromagnetic shielding layer cable penetration structure | |
CN101355866A (en) | Composite coating structure for absorbing and preventing electromagnetic wave | |
TR200001134T2 (en) | Protective insulation boards against electromagnetic fields. | |
WO2011161533A1 (en) | Wiring duct, wiring duct system, and electric device connected to the wiring duct | |
KR200416322Y1 (en) | Grounding apparatus for bedclothes of the shield of electormagnetic waves | |
JP2662110B2 (en) | Electromagnetic wave leakage prevention structure | |
GB2106726A (en) | Electrical cable assembly for a ring main | |
JP3027319B2 (en) | Electromagnetic wave shield structure of bus duct | |
JPH09312490A (en) | Electric wiring structure laid through electromagnetic wave shield | |
JPH04199787A (en) | Electromagnetic wave shielding structure for electric cable | |
JP4235055B2 (en) | Series unit | |
CN214624639U (en) | Transformer isolation protection device | |
CN215872352U (en) | Safety isolation and anti-interference structure of PLC cabinet | |
CN201197259Y (en) | Electronic equipment with shielding case | |
JPS609332B2 (en) | Submerged oil lead extraction device for induction electric equipment | |
JP3751658B2 (en) | Fluctuating magnetic field shield method | |
JP2804848B2 (en) | Manufacturing method of shield room and anechoic chamber | |
JPS596046B2 (en) | Interference wave blocking device using magnetic path and good conductor plate | |
JPS6292713A (en) | Wiring duct |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |