EP0404285A1 - Isolating housing wall with conductor lead-through arrangement - Google Patents

Isolating housing wall with conductor lead-through arrangement Download PDF

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Publication number
EP0404285A1
EP0404285A1 EP90250153A EP90250153A EP0404285A1 EP 0404285 A1 EP0404285 A1 EP 0404285A1 EP 90250153 A EP90250153 A EP 90250153A EP 90250153 A EP90250153 A EP 90250153A EP 0404285 A1 EP0404285 A1 EP 0404285A1
Authority
EP
European Patent Office
Prior art keywords
housing part
lowered
conductor
insulating housing
part according
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
Application number
EP90250153A
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German (de)
French (fr)
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EP0404285B1 (en
Inventor
Wolfgang Günther
Ralf Reiner Volkmar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0404285A1 publication Critical patent/EP0404285A1/en
Application granted granted Critical
Publication of EP0404285B1 publication Critical patent/EP0404285B1/en
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Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators

Definitions

  • the invention is in the field of high-voltage devices and is to be used in the structural design of a conductor bushing through an insulating housing part.
  • housing parts are used, for example, to accommodate an electrical contact arrangement.
  • a housing part can be, for example, the cup-shaped or box-shaped housing part of a vacuum relay consisting of glass or ceramic.
  • a conductor for example a metal contact lead, is usually passed through an insulating housing wall in such a way that either an annular metallization is applied around the leadthrough opening, a cap is soldered to this metallization and the conductor is soldered into an opening in the contact base (US -Z "Electronics Industry, May 1986, page 39) or in such a way that the housing bore is metallized and the contact lead designed as a thin-walled tube is soldered into the bore (DE-Z" Siemens Components (1986), number 4, page 1431144).
  • the invention has for its object to improve the high voltage strength or flashover resistance of such bushings and thus to create the possibility of reducing the dimensions of such housing parts or increasing the nominal voltage level.
  • the invention provides that the outer surface of the housing part is lowered around the respective lead-through opening and is provided with an electrically conductive coating in this lowered area.
  • the measure provided according to the invention reduces field strength concentrations in the area of the surface of the ceramic housing part), which results in a higher flashover or high voltage resistance in the area of the conductor leadthrough.
  • Conductive lacquers and metallizations are particularly suitable as the electrically conductive coating.
  • the conductor is expediently not fixed directly in the leadthrough opening but by means of a holding element soldered onto the lowered surface, a metallization being provided as the electrically conductive coating.
  • a holding element is particularly suitable, which consists of a conical tube piece with an annular base part resting on the lowered surface and a sleeve-like neck part resting against the conductor.
  • the lowered surface should be provided with a circumferential groove at its edge.
  • the surface of the respective lead-through opening can also be provided with an electrically conductive coating.
  • the invention is particularly applicable to pot-like housing parts made of ceramic, which form the switching chamber of a vacuum relay.
  • Figure 1 shows a pot-like, ceramic housing part 1, which is provided at the bottom with a soldered mounting ring 2.
  • the housing part protrude radially as three conductors 37 4 and 5, which are formed at their inner ends as fixed relay contacts and are prepared at their outer ends for fastening a voltage and / or current supply.
  • the outer surface of the ceramic housing is lowered in the area of the through-hole of the housing part 1, which is not described in any more detail, which results in a lowered area 6.
  • This is provided with a groove 7 on its edge, which creates a platform-like area.
  • the entire lowered surface is provided with a metallization 8 according to FIG.
  • a holding element 9 is provided in each case, which has a sleeve-like neck part which bears against the contact lead, a conical tube piece and an annular base part.
  • the ring-shaped foot part is soldered to the metallization 8 and the sleeve-like neck part to the contact feed 3 or 4 or 5.
  • the feedthrough opening can also be provided with a metallization 8.
  • a metallization 8 There is also the possibility of providing a chamfer on the upper edge of the lowered area that is not metallized. This ensures that the live outer edge of the metallization 8 lies below the actual surface of the ceramic housing part, whereby field strength concentrations in the surrounding medium, in particular air, are avoided at this critical point.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Bodies (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Insulators (AREA)

Abstract

In order to improve the high-voltage resistance of conductor ducts on an insulating housing part (1), the outer surface of the housing part is recessed around the duct opening and is provided with metallisation (8) in this recessed region (6); the conductor (3) which is passed through is preferably fixed with a retaining element (9) which consists of a conical tubular piece with an annular base part seated on the recessed surface and a neck part, in the manner of a sleeve, resting on the contact lead. …<IMAGE>…

Description

Die Erfindung liegt auf dem Gebiet der Hochspannungsgeräte und ist bei der konstruktiven Ausgestaltung einer Leiterdurchführung durch ein isolierendes Gehäuseteil anzuwenden. Solche Gehäusetei­le dienen beispielsweise zur Aufnahme einer elektrischen Kontakt­anordnung. Bei einem solchen Gehäuseteil kann es sich beispiels­weise um das becher- oder kastenförmige, aus Glas oder Keramik bestehende Gehäuseteil eines Vakuumrelais handeln.The invention is in the field of high-voltage devices and is to be used in the structural design of a conductor bushing through an insulating housing part. Such housing parts are used, for example, to accommodate an electrical contact arrangement. Such a housing part can be, for example, the cup-shaped or box-shaped housing part of a vacuum relay consisting of glass or ceramic.

Die Durchführung eines Leiters, beispielsweise einer metallenen Kontaktzuführung, durch eine isolierende Gehäusewand erfolgt in aller Regel derart, daß entweder um die Durchführungsöffnung herum eine kreisringförmige Metallisierung aufgebracht, an diese Metallisierung eine Kappe stumpf angelötet und der Leiter in eine Öffnung im Kontaktboden eingelötet wird (US-Z "Elec­tronics Industry, May 1986, Seite 39) oder derart, daß die Gehäusebohrung metallisiert und die als dünnwandiges Rohr ausgebildete Kontaktzuführung in die Bohrung eingelötet wird (DE-Z "Siemens Components (1986), Heft 4, Seite 1431144).A conductor, for example a metal contact lead, is usually passed through an insulating housing wall in such a way that either an annular metallization is applied around the leadthrough opening, a cap is soldered to this metallization and the conductor is soldered into an opening in the contact base (US -Z "Electronics Industry, May 1986, page 39) or in such a way that the housing bore is metallized and the contact lead designed as a thin-walled tube is soldered into the bore (DE-Z" Siemens Components (1986), number 4, page 1431144).

Ausgehend von einem isolierenden Gehäuseteil mit den Merkmalen des Oberbegriffes des Patentanspruches 1 liegt der Erfindung die Aufgabe zugrunde, die Hochspannungsfestigkeit bzw. die Überschlagsfestigkeit solcher Durchführungen zu verbessern und damit die Möglichkeit zu schaffen, die Abmessungen solcher Gehäuseteile zu verkleinern bzw. die Nennspannungsebene zu er­höhen.Starting from an insulating housing part with the features of the preamble of claim 1, the invention has for its object to improve the high voltage strength or flashover resistance of such bushings and thus to create the possibility of reducing the dimensions of such housing parts or increasing the nominal voltage level.

Zur Lösung dieser Aufgabe ist gemäß der Erfindung vorgesehen, daß um die jeweilige Durchführungsöffnung herum die äußere Ober­fläche des Gehäuseteiles abgesenkt und in diesem abgesenkten Be­reich mit einer elektrisch leitenden Beschichtung versehen ist.To achieve this object, the invention provides that the outer surface of the housing part is lowered around the respective lead-through opening and is provided with an electrically conductive coating in this lowered area.

Durch die gemäß der Erfindung vorgesehene Maßnahme werden Feld­stärkekonzentrationen im Bereich der Oberfläche des keramischen Gehäuseteiles vermindert) was eine höhere Überschlags- bzw. Hochspannungsfestigkeit im Bereich der Leiterdurchführung zur Folge hat. Als elektrisch leitende Beschichtung kommen vor allem Leitlacke sowie Metallisierungen in Betracht.The measure provided according to the invention reduces field strength concentrations in the area of the surface of the ceramic housing part), which results in a higher flashover or high voltage resistance in the area of the conductor leadthrough. Conductive lacquers and metallizations are particularly suitable as the electrically conductive coating.

Um Grenzkanteneffekte zwischen der leitfähigen Beschichtung im Bereich der abgesenkten Oberfläche des isolierenden Gehäusetei­les und der äußeren Oberfläche des Gehäuseteiles zu vermeiden und damit die Hochspannungsfestigkeit noch weiter zu erhöhen, ist es vorteilhaft, die Seitenwand des abgesenkten Bereiches an der oberen Kante mit einer unbeschichteten Fase zu versehen. ­Um die Fertigungssicherheit einer solchen Leiterdurchführung zu verbessern, wird der Leiter zweckmäßig nicht direkt in der Durchführungsöffnung sondern mittels eines auf die abgesenkte Oberfläche aufgelöteten Halteelementes fixiert, wobei als elek­trisch leitende Beschichtung eine Metallisierung vorzusehen ist. Hierzu eignet sich besonders ein Halteelement, das aus einem konischen Rohrstück mit einem auf der abgesenkten Ober­fläche aufsitzenden ringförmigen Fußteil und einem an dem Leiter anliegenden manschettenartigen Halsteil besteht. Dabei sollte zur geometrischen Abgrenzung der Lötfläche gegen die Wand des abgesenkten Oberflächenbereiches die abgesenkte Oberfläche an ihrem Rand mit einer umlaufenden Rinne versehen sein. - Im übri­gen kann auch die Oberfläche der jeweiligen Durchführungsöffnung mit einer elektrisch leitenden Beschichtung versehen sein.In order to avoid boundary edge effects between the conductive coating in the area of the lowered surface of the insulating housing part and the outer surface of the housing part and thus to further increase the high-voltage strength, it is advantageous to provide the side wall of the lowered area with an uncoated chamfer on the upper edge . In order to improve the manufacturing security of such a conductor leadthrough, the conductor is expediently not fixed directly in the leadthrough opening but by means of a holding element soldered onto the lowered surface, a metallization being provided as the electrically conductive coating. For this purpose, a holding element is particularly suitable, which consists of a conical tube piece with an annular base part resting on the lowered surface and a sleeve-like neck part resting against the conductor. For the geometrical delimitation of the soldering surface against the wall of the lowered surface area, the lowered surface should be provided with a circumferential groove at its edge. - Otherwise, the surface of the respective lead-through opening can also be provided with an electrically conductive coating.

Die Erfindung ist insbesondere bei topfartigen Gehäuseteilen aus Keramik anzuwenden, die die Schaltkammer eines Vakuum­relais bilden.The invention is particularly applicable to pot-like housing parts made of ceramic, which form the switching chamber of a vacuum relay.

Zwei Ausführungsbeispiele des neuen isolierenden Gehäuseteiles sind in den Figuren 1 bis 3 dargestellt. Dabei zeigt

  • Figur 1 ein keramisches Gehäuseteil mit drei Kontaktzuführungen und Halterung dieser Kontaktzuführungen auf abgesenkten, mit einer umlaufenden Rinne versehenen Oberflächenteilen,
  • Figur 2 eine vergrößerte Darstellung des Durchführungsbereiches und
  • Figur 3 eine Variante des Durchführungsbereiches gemäß Figur 2.
Two embodiments of the new insulating housing part are shown in Figures 1 to 3. It shows
  • 1 shows a ceramic housing part with three contact leads and holding these contact leads on lowered, surface parts provided with a circumferential groove,
  • Figure 2 is an enlarged view of the implementation area and
  • 3 shows a variant of the implementation area according to FIG. 2.

Figur 1 zeigt ein topfartiges, keramisches Gehäuseteil 1, das am unteren Rand mit einem angelöteten Befestigungsring 2 ver­sehen ist. In das Innere des Gehäuseteiles ragen als Leiter radial drei Kontaktzuführungen 37 4 und 5 hinein, die an ihren inneren Enden als feststehende Relaiskontakte ausgebildet sind und an ihren äußeren Enden zur Befestigung einer Spannungs- und/oder Stromzuführung vorbereitet sind. Im Bereich der nicht näher bezeichneten Durchführungsbohrung des Gehäuseteiles 1 ist die äußere Oberfläche des Keramikgehäuses abgesenkt, wodurch sich ein abgesenkter Bereich 6 ergibt. Dieser ist an seinem Rand mit einer Rille 7 versehen, wodurch ein podestartiger Bereich entsteht. Die gesamte abgesenkte Oberfläche ist gemäß Figur 2 mit einer Metallisierung 8 versehen.Figure 1 shows a pot-like, ceramic housing part 1, which is provided at the bottom with a soldered mounting ring 2. In the interior of the housing part protrude radially as three conductors 37 4 and 5, which are formed at their inner ends as fixed relay contacts and are prepared at their outer ends for fastening a voltage and / or current supply. The outer surface of the ceramic housing is lowered in the area of the through-hole of the housing part 1, which is not described in any more detail, which results in a lowered area 6. This is provided with a groove 7 on its edge, which creates a platform-like area. The entire lowered surface is provided with a metallization 8 according to FIG.

Zur Fixierung der Kontaktzuführungen ist jeweils ein Halteele­ment 9 vorgesehen, das ein manschettenartiges, an der Kontakt­zuführung anliegendes Halsteil, ein konisches Rohrstück und ein ringförmiges Fußteil aufweist. Das ringförmige Fußteil ist mit der Metallisierung 8 und das manschettenartige Halsteil mit der Kontaktzuführung 3 bzw. 4 bzw. 5 verlötet.To fix the contact leads, a holding element 9 is provided in each case, which has a sleeve-like neck part which bears against the contact lead, a conical tube piece and an annular base part. The ring-shaped foot part is soldered to the metallization 8 and the sleeve-like neck part to the contact feed 3 or 4 or 5.

Gemäß Figur 3 kann auch die Durchführungsöffnung mit einer Metallisierung 8 versehen sein. Weiterhin besteht die Möglich­keit, an der oberen Kante des abgesenkten Bereiches eine Fase vorzusehen, die nicht metallisiert ist. Dadurch wird er­reicht, daß die spannungsführende äußere Kante der Metallisie­rung 8 unterhalb der eigentlichen Oberfläche des keramischen Gehäuseteiles liegt, wodurch Feldstärkekonzentrationen im umgebenden Medium, insbesondere Luft, an dieser kritischen Stelle vermieden werden.According to FIG. 3, the feedthrough opening can also be provided with a metallization 8. There is also the possibility of providing a chamfer on the upper edge of the lowered area that is not metallized. This ensures that the live outer edge of the metallization 8 lies below the actual surface of the ceramic housing part, whereby field strength concentrations in the surrounding medium, in particular air, are avoided at this critical point.

Claims (6)

1. Isolierendes Gehäuseteil mit wenigstens einem durch die Ge­häusewand hindurchgeführten Leiter, wobei der Leiter im Bereich der jeweiligen Durchführungsöffnung mittels einer Metallisie­rung unter Anwendung einer Lötverbindung fixiert ist,
dadurch gekennzeichnet,
daß um die jeweilige Durchführungsöffnung herum die äußere Ober­fläche des Gehäuseteiles (1) abgesenkt und in diesem abgesenkten Bereich (6) mit einer elektrisch leitenden Beschichtung (8) versehen ist.1. Insulating housing part with at least one conductor passed through the housing wall, the conductor being fixed in the region of the respective lead-through opening by means of a metallization using a soldered connection,
characterized,
that the outer surface of the housing part (1) is lowered around the respective lead-through opening and is provided in this lowered area (6) with an electrically conductive coating (8). 2. Isolierendes Gehäuseteil nach Anspruch 1, dadurch gekennzeichnet, daß die Seitenwand des abge­senkten Bereiches an der oberen Kante mit einer nichtbeschich­teten Fase (10) versehen ist.2. Insulating housing part according to claim 1, characterized in that the side wall of the lowered region is provided at the upper edge with an uncoated chamfer (10). 3. Isolierendes Gehäuseteil nach Anspruch 1 oder 2 mit einem Halteelement zur Fixierung des Leiters und einer Metallisierung als elektrisch leitender Beschichtung,
dadurch gekennzeichnet, daß das Halte­element (9) aus einem konischen Rohrstück mit einem auf der ab­gesenkten Oberfläche (6) aufliegenden ringförmigen Fußteil und einem an der Kontaktzuführung (3) anliegenden manschettenarti­gen Halsteil besteht.3. Insulating housing part according to claim 1 or 2 with a holding element for fixing the conductor and a metallization as an electrically conductive coating,
characterized in that the holding element (9) consists of a conical tube piece with an annular base part resting on the lowered surface (6) and a sleeve-like neck part resting on the contact feeder (3). 4. Isolierendes Gehäuseteil nach Anspruch 3, dadurch gekennzeichnet, daß die abgesenkte Oberfläche (6)an ihrem Rand mit einer umlaufenden Rinne (7) versehen ist.4. Insulating housing part according to claim 3, characterized in that the lowered surface (6) is provided at its edge with a circumferential groove (7). 5. Isolierendes Gehäuseteil nach Anspruch 3 oder 4,
dadurch gekennzeichnet, daß auch die Durchführungsöffnung mit einer elektrisch leitenden Beschich­tung (81) versehen ist.5. Insulating housing part according to claim 3 or 4,
characterized in that the through opening is also provided with an electrically conductive coating (81). 6. Verwendung eines Gehäuseteiles nach einem der Ansprüche 1 bis 5 in Form eines Keramiktopfes als Schaltkammer eines Vakuum­relais.6. Use of a housing part according to one of claims 1 to 5 in the form of a ceramic pot as the switching chamber of a vacuum relay.
EP90250153A 1989-06-19 1990-06-12 Isolating housing wall with conductor lead-through arrangement Expired - Lifetime EP0404285B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3920355A DE3920355A1 (en) 1989-06-19 1989-06-19 INSULATING HOUSING PART WITH A LEAD
DE3920355 1989-06-19

Publications (2)

Publication Number Publication Date
EP0404285A1 true EP0404285A1 (en) 1990-12-27
EP0404285B1 EP0404285B1 (en) 1993-05-19

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EP90250153A Expired - Lifetime EP0404285B1 (en) 1989-06-19 1990-06-12 Isolating housing wall with conductor lead-through arrangement

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US (1) US5170885A (en)
EP (1) EP0404285B1 (en)
DE (2) DE3920355A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2057644A1 (en) * 2006-08-31 2009-05-13 ABB Technology Ltd High voltage bushing

Families Citing this family (12)

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Publication number Priority date Publication date Assignee Title
US5569891A (en) * 1994-02-14 1996-10-29 Abb Power T&D Company, Inc. High performance circuit breaker with independent pole operation linkage and conical composite bushings
US5466891A (en) * 1994-04-08 1995-11-14 Abb Power T&D Company Inc. Conical composite SF6 high voltage bushing with floating shield
US6840782B1 (en) 2004-02-26 2005-01-11 Aaron M. Borden Dual-sectioned grounding bushing assembly
US7182611B2 (en) * 2004-02-26 2007-02-27 Borden Aaron M Dual-sectioned grounding bushing assembly
EP2500914B1 (en) * 2011-03-16 2014-03-05 ABB Technology Ltd High voltage bushing with support for the conductor
US9177742B2 (en) 2011-10-18 2015-11-03 G & W Electric Company Modular solid dielectric switchgear
CN104160458B (en) * 2012-01-09 2017-08-15 通用电气技术有限公司 For high voltage direct current and the pure gas of the plugs and sockets formula of super-pressure insulation wall bushing
USD703414S1 (en) * 2012-06-29 2014-04-22 Warn Industries, Inc. Winch
USD744189S1 (en) 2014-08-20 2015-11-24 Warn Industries, Inc. Winch
USD742614S1 (en) 2014-11-04 2015-11-03 Engo Industries, L.L.C. Winch
USD811684S1 (en) * 2016-10-28 2018-02-27 Warn Industries, Inc. Control pack of a winch
USD811685S1 (en) * 2016-10-28 2018-02-27 Warn Industries, Inc. Clutch lever of a winch

Citations (4)

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DE1490886A1 (en) * 1964-07-10 1969-07-17 Vakutronik Wissenschaftlicher Vacuum-tight solderable electrical feedthrough or solderable support element made of glass for high insulation requirements
CH600512A5 (en) * 1976-12-14 1978-06-15 Suisse Horlogerie
DE3333684A1 (en) * 1983-09-17 1985-04-04 Standard Elektrik Lorenz Ag, 7000 Stuttgart HOUSING FOR AN ELECTROMECHANICAL COMPONENT, IN PARTICULAR RELAY
CH661610A5 (en) * 1983-10-19 1987-07-31 Bbc Brown Boveri & Cie Bushing plate without any control elements

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US3385618A (en) * 1965-05-26 1968-05-28 American Lava Corp Ceramic-to-metal seal
US3674958A (en) * 1970-11-23 1972-07-04 Allis Chalmers Mfg Co Vacuum circuit interrupter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1490886A1 (en) * 1964-07-10 1969-07-17 Vakutronik Wissenschaftlicher Vacuum-tight solderable electrical feedthrough or solderable support element made of glass for high insulation requirements
CH600512A5 (en) * 1976-12-14 1978-06-15 Suisse Horlogerie
DE3333684A1 (en) * 1983-09-17 1985-04-04 Standard Elektrik Lorenz Ag, 7000 Stuttgart HOUSING FOR AN ELECTROMECHANICAL COMPONENT, IN PARTICULAR RELAY
CH661610A5 (en) * 1983-10-19 1987-07-31 Bbc Brown Boveri & Cie Bushing plate without any control elements

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2057644A1 (en) * 2006-08-31 2009-05-13 ABB Technology Ltd High voltage bushing
EP2057644A4 (en) * 2006-08-31 2012-03-14 Abb Technology Ltd High voltage bushing
US8389876B2 (en) 2006-08-31 2013-03-05 Abb Technology Ltd. High voltage bushing

Also Published As

Publication number Publication date
EP0404285B1 (en) 1993-05-19
DE59001475D1 (en) 1993-06-24
DE3920355A1 (en) 1990-12-20
US5170885A (en) 1992-12-15

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