EP0543120B1 - Contact assembly. - Google Patents
Contact assembly. Download PDFInfo
- Publication number
- EP0543120B1 EP0543120B1 EP92116700A EP92116700A EP0543120B1 EP 0543120 B1 EP0543120 B1 EP 0543120B1 EP 92116700 A EP92116700 A EP 92116700A EP 92116700 A EP92116700 A EP 92116700A EP 0543120 B1 EP0543120 B1 EP 0543120B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact arrangement
- contact
- arrangement according
- insulating material
- locking means
- 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 - Lifetime
Links
- 239000011810 insulating material Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 description 3
- 230000001066 destructive effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0016—Contact arrangements for tap changers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
- H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0016—Contact arrangements for tap changers
- H01H2009/0022—Mounting of the fixed contacts or taps on cylindrical wall of oil vessel containing the tap changer; Details of screening
Definitions
- the invention relates to a contact arrangement for step selectors of step transformers according to the preamble of the first claim.
- the invention further relates to a shaped spring for locking such contact arrangements.
- the contact piece is fixed in the cylinder wall by permanent deformation of its shaft on the outer side of the cylinder wall.
- This permanent deformation is generated by widening bores in the shaft, as known from DE-C-38 01 151, or by upsetting the shaft from the outside, as known from DE-U-90 10 730.
- such a contact attachment has the disadvantage that a surface pressure of the deformed shaft on the underlying insulating sleeve occurs practically only at a few points, so that a firm contact attachment cannot be reliably achieved, especially since the insulating sleeve "flows" selectively , ie give in locally under the influence of high surface pressure.
- the object of the invention is therefore to provide a contact arrangement in which By means of an elastic fastening realized over a large area with a correspondingly low surface pressure, which is under a certain pretension, a permanent contact fastening is possible even with shrinkage or tolerance of the insulating material parts, and a simple, non-destructive dismantling of the entire contact arrangement is possible.
- the sub-claims 2 to 7 contain particularly advantageous developments of the contact arrangement according to the invention; the sub-claims 8 to 10 contain a shaped spring which is particularly suitable for permanent attachment of the contact arrangement according to the invention.
- the shaft of the contact piece is fastened by means of a cross bolt, in that it is braced by rotation on an incline and thus the entire contact arrangement, which is already fixed on the inside of the cylinder wall by the bulge-like thickening of its contact contour, is non-positively fastened.
- this slope which acts as a locking means
- the attachment is possible by simply turning the contact; no special tools are required.
- the assembly is thus much easier to carry out than the conventional upsetting of the contact shaft according to the prior art, which requires a special upsetting tool on the outside and a special counter-holder inside the insulating cylinder.
- a non-destructive disassembly of the entire contact arrangement is possible by simply turning it in the opposite direction; the advantages are obvious.
- Another very important advantage of the invention is that a circular, uniform surface pressure is achieved by the locking means acting directly on the insulating material bushing that forms the transverse insulation is, which prevents a "flow" of the insulating material and ensures a tight fit of the entire contact arrangement.
- the shaped spring according to the invention which is particularly suitable for this fastening, with its asymmetrical recess also offers the advantage of constant pretensioning, as a result of which a good and durable fastening is achieved even after the insulating cylinder has possibly shrunk or after strong vibrations.
- the pitch according to the invention can be achieved in the simplest way with such a plate-like shaped spring by simply punching out the recess. With such a form spring, slightly recessed locking points on the slope are advantageous, which ensure a fixed and defined rest position of the cross bolt in the stable state.
- the contact piece 1 fastened in the wall of an insulating material cylinder 2 consists of the bead-like thickened contact contour 1.1 inside, the round shaft 1.2 and the outer end 1.3 forming a connecting surface.
- the cross insulation consists of a two-part insulating sleeve 3.1, 3.2, which is plugged together, the contact contour 1.1 being tight against the inner insulating sleeve 3.1.
- the outer insulating sleeve 3.2. has on its outer end face a slope 4.1 repeating in the same direction over half the circumference. on. This is shown schematically by the handling of this scope in FIG. 1. Outside the outer insulating material sleeve 3.2.
- a further insulating material bushing 4 is plugged onto the shaft 1.2, which has the same slope 4.1 on its inner side. having. With relative rotation of the insulation bushings 3.2. and 4 the corresponding slopes 4.1 slide towards one another, shift the further insulating material bushing 4 in the longitudinal axis of the shaft 1.2 to the outside and thus cause the transverse bolt 5 to be braced on the outside of the further insulating material bushing 4, to which a shield or the like is additionally fastened can. It is also possible, and in practice often easier, to simply omit the further insulating material bushing 4, so that the transverse bolt 5 braces itself on the slope 4.1 on the outer end face of the outer insulating material bushing 3.2 when the entire contact piece rotates.
- this slope 4.1 can be provided with a detent 4.2, as is also shown by the above-mentioned development of the circumference.
- the cross bolt 5 also latches directly in a different way with gradients, which can be designed in different ways, as will be explained in more detail.
- Fig. 2 shows a further embodiment of the contact arrangement, with an otherwise identical structure instead of an additional insulating sleeve, an annular shield 6 is pushed onto the shaft 1.2, which has an inner edge 6.1, which in turn has the slope 6.2. A stable rest position of the cross pin 5 can be easily achieved by depressions on the slope 6.2, not shown.
- FIG. 3 shows a further contact arrangement in which a form spring 7 acts as a locking means with a slope 7.2.
- a form spring 7 acts as a locking means with a slope 7.2.
- FIG. 4a and 4b finally show this form spring 7 itself.
- the plate-shaped spring 7 is curved in itself, consists of spring steel and has an inner recess 7.1.
- This recess 7.1 is not rotationally symmetrical and designed in such a way that the width of the remaining arched material increases continuously over an angle of rotation of approximately 180 degrees, then the course is repeated.
- the edge 7.2 which comprises the recess 7.1, thus has the desired slope.
- the recess 7.1 is expanded by additional notches 7.3, 7.4, such that the clear width between the notches 7.3, 7.4 is somewhat larger than the length of the transverse bolt 5 or the width of the outer end 1.3 of the contact piece 1, so that the form spring 7 can be pushed onto the shaft 1.2 in this position.
Landscapes
- Manufacturing & Machinery (AREA)
- Engineering & Computer Science (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Springs (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Insulating Bodies (AREA)
- Insulators (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Coils Or Transformers For Communication (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
- Measuring Leads Or Probes (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Inert Electrodes (AREA)
Abstract
Description
Die Erfindung betrifft eine Kontaktanordnung für Stufenwähler von Stufentransformatoren gemäß dem Oberbegriff des ersten Patentanspruches. Die Erfindung betrifft weiterhin eine Formfeder zur Arretierung solcher Kontaktanordnungen.The invention relates to a contact arrangement for step selectors of step transformers according to the preamble of the first claim. The invention further relates to a shaped spring for locking such contact arrangements.
Solche Kontaktanordnungen sind bekannt: DE-A-38 01 152.Such contact arrangements are known: DE-A-38 01 152.
Bei diesen Kontaktanordnungen wird das Kontaktstück durch bleibende Verformung seines Schaftes auf der äußeren Seite der Zylinderwand in der Zylinderwand befestigt.
Diese bleibende Verformung wird durch Aufweiten von Bohrungen im Schaft, wie aus DE-C-38 01 151 bekannt, oder durch Stauchen des Schaftes von außen, wie aus DE-U-90 10 730 bekannt, erzeugt.
Unabhängig von der Realisierung einer solchen Verformung weist eine solche Kontaktbefestigung den Nachteil auf, daß eine Flächenpressung des deformierten Schaftes auf die darunterliegende Isolierstoffbuchse praktisch nur an wenigen Punkten auftritt, so daß eine feste Kontaktbefestigung nicht zuverlässig erzielt werden kann, zumal die Isolierstoffbuchsen punktuell "fließen", d.h. unter dem Einfluß der hohen Flächenpressung örtlich nachgeben.
Beim Trocknen der Isolierzylinder ist zudem ein gewisses Schrumpfen dieser Zylinder und damit ihrer Wandung zu verzeichnen, was die Lockerung der nach dem Stand der Technik befestigten Kontaktanordnungen begünstigt.
Schließlich ist es nach dem Stand der Technik nicht möglich, die Kontakte, bei Wartungsarbeiten etwa, zerstörungsfrei zu demontieren, da mit Sicherheit der deformierte Schaft zerstört werden muß. Dies ist zum einen aufwendig und umständlich und wegen der relativ teueren elektrisch hoch belastbaren Kontaktstücke auch nicht kostengünstig.In these contact arrangements, the contact piece is fixed in the cylinder wall by permanent deformation of its shaft on the outer side of the cylinder wall.
This permanent deformation is generated by widening bores in the shaft, as known from DE-C-38 01 151, or by upsetting the shaft from the outside, as known from DE-U-90 10 730.
Regardless of the implementation of such a deformation, such a contact attachment has the disadvantage that a surface pressure of the deformed shaft on the underlying insulating sleeve occurs practically only at a few points, so that a firm contact attachment cannot be reliably achieved, especially since the insulating sleeve "flows" selectively , ie give in locally under the influence of high surface pressure.
When the insulating cylinders dry, there is also a certain shrinkage of these cylinders and thus their walls, which favors the loosening of the contact arrangements fastened according to the prior art.
Finally, according to the prior art, it is not possible to disassemble the contacts, for example during maintenance work, without destruction, since the deformed shaft must certainly be destroyed. On the one hand, this is complex and cumbersome and, because of the relatively expensive electrically heavy-duty contact pieces, it is also not cost-effective.
Aufgabe der Erfindung ist es demnach, eine Kontaktanordnung anzugeben, bei der mittels einer elastischen, über eine große Fläche mit entsprechend geringer Flächenpressung realisierten Befestigung, die unter einer gewissen Vorspannung steht, eine dauerhafte Kontaktbefestigung auch bei Schrumpfung oder Toleranz der Isolierstoffteile möglich und zudem ein einfaches, zerstörungsfreies Demontieren der gesamten Kontaktanordnung möglich ist.The object of the invention is therefore to provide a contact arrangement in which By means of an elastic fastening realized over a large area with a correspondingly low surface pressure, which is under a certain pretension, a permanent contact fastening is possible even with shrinkage or tolerance of the insulating material parts, and a simple, non-destructive dismantling of the entire contact arrangement is possible.
Dies wird erfindungsgemäß durch eine Kontaktanordnung mit den Merkmalen des ersten Patentanspruches gelöst. Die Unteransprüche 2 bis 7 beinhalten besonders vorteilhafte Weiterbildungen der erfindungsgemäßen Kontaktanordnung; die Unteransprüche 8 bis 10 beinhalten eine Formfeder, die zur dauerhaften Befestigung der erfindungsgemäßen Kontaktanordnung besonders geeignet ist.This is achieved according to the invention by a contact arrangement with the features of the first claim. The
Nach der Erfindung wird der Schaft des Kontaktstückes mittels eines Querbolzens befestigt, indem dieser durch Drehung auf einer Steigung verspannt wird und damit die gesamte Kontaktanordnung, die an der Innenseite der Zylinderwand bereits durch die wulstartige Verdickung ihrer Kontaktkontur festgelegt ist, kraftschlüssig befestigt wird. Im Rahmen der Erfindung sind verschiedene technische Realisierungsmöglichkeiten dieser als Arretierungsmittel wirkenden Steigung möglich und sinnvoll. In jedem Fall ist die Befestigung jedoch durch einfaches Drehen des Kontaktes möglich; es sind keinerlei Spezialwerkzeuge erforderlich. Die Montage ist damit ungleich einfacher durchführbar als das nach dem Stand der Technik übliche Stauchen des Kontaktschaftes, was ein spezielles Stauchwerkzeug auf der Außenseite und einen besonderen Gegenhalter im Inneren des Isolierzylinders erfordert.
Auf ebenso einfache Weise ist nach der Erfindung eine zerstörungsfreie Demontage der gesamten Kontaktanordnung durch einfaches Drehen in entgegengesetzter Richtung möglich; die Vorteile sind offensichtlich.
Ein ganz wesentlicher Vorteil der Erfindung besteht ferner darin, daß über die direkt auf die die Querisolation bildende Isolierstoffbuchse wirkenden Arretierungsmittel eine kreisförmige, gleichmäßige Flächenpressung realisiert wird, die ein "Fließen" des Isolierstoffes verhindert und einen festen Sitz der gesamten Kontaktanordnung gewährleistet.According to the invention, the shaft of the contact piece is fastened by means of a cross bolt, in that it is braced by rotation on an incline and thus the entire contact arrangement, which is already fixed on the inside of the cylinder wall by the bulge-like thickening of its contact contour, is non-positively fastened. Within the scope of the invention, various technical implementation options for this slope, which acts as a locking means, are possible and useful. In any case, the attachment is possible by simply turning the contact; no special tools are required. The assembly is thus much easier to carry out than the conventional upsetting of the contact shaft according to the prior art, which requires a special upsetting tool on the outside and a special counter-holder inside the insulating cylinder.
In an equally simple manner, according to the invention, a non-destructive disassembly of the entire contact arrangement is possible by simply turning it in the opposite direction; the advantages are obvious.
Another very important advantage of the invention is that a circular, uniform surface pressure is achieved by the locking means acting directly on the insulating material bushing that forms the transverse insulation is, which prevents a "flow" of the insulating material and ensures a tight fit of the entire contact arrangement.
Die für diese Befestigung besonders geeignete erfindungsgemäße Formfeder mit ihrer asymmetrischen Ausnehmung bietet darüberhinaus den Vorteil einer ständigen Vorspannung, wodurch auch nach eventuellem Schrumpfen des Isolierzylinders oder auch nach starken Erschütterungen eine gute und haltbare Befestigung erreicht wird.
Darüberhinaus ist bei einer solchen tellerartigen Formfeder durch einfaches Ausstanzen der Ausnehmung auf einfachste Weise die erfindungsgemäße Steigung erzielbar.
Vorteilhaft sind bei einer solchen Formfeder weiterhin leicht vertiefte Rastpunkte auf der Steigung, die eine fixierte und definierte Ruhelage des Querbolzens im stabilen Zustand sicherstellen.The shaped spring according to the invention, which is particularly suitable for this fastening, with its asymmetrical recess also offers the advantage of constant pretensioning, as a result of which a good and durable fastening is achieved even after the insulating cylinder has possibly shrunk or after strong vibrations.
In addition, the pitch according to the invention can be achieved in the simplest way with such a plate-like shaped spring by simply punching out the recess.
With such a form spring, slightly recessed locking points on the slope are advantageous, which ensure a fixed and defined rest position of the cross bolt in the stable state.
Die Erfindung soll nachstehend an Ausführungsbeispielen näher erläutert werden.The invention will be explained in more detail below using exemplary embodiments.
Es zeigen:
- Fig. 1
- eine Kontaktanordnung mit einer weiteren Isolierstoffbuchse mit Arretierungsmitteln
- Fig. 2
- eine zweite Kontaktanordnung mit einer die Arretierungsmittel tragenden an sich bekannten Abschirmung
- Fig. 3
- eine dritte Kontaktanordnung mit einer Formfeder als Arretierungsmittel
- Fig. 4a
- eine Formfeder in Draufsicht
- Fig. 4b
- dieselbe im seitlichen Schnitt
- Fig. 1
- a contact arrangement with a further insulating sleeve with locking means
- Fig. 2
- a second contact arrangement with a shield carrying the locking means known per se
- Fig. 3
- a third contact arrangement with a shaped spring as a locking means
- Fig. 4a
- a shaped spring in top view
- Fig. 4b
- the same in side section
Bei der in Fig. 1 gezeigten Kontaktanordnung besteht das in der Wand eines Isolierstoffzylinders 2 befestigte Kontaktstück 1 aus der wulstartig verdickten Kontaktkontur 1.1 im Inneren, dem runden Schaft 1.2 und dem eine Anschlußfläche bildenden äußeren Ende 1.3.
Die Querisolation besteht aus einer zweiteiligen Isolierstoffbuchse 3.1, 3.2, die zusammengesteckt ist, wobei die Kontaktkontur 1.1 fest an der inneren Isolierstoffbuchse 3.1 anliegt.
Die äußere Isolierstoffbuchse 3.2. weist an ihrer äußeren Stirnseite jeweils über den halben Umfang eine sich gleichsinnig wiederholende Steigung 4.1. auf. Dies ist schematisch durch die Abwicklung dieses Umfanges in Fig. 1 dargestellt. Außerhalb der äußeren Isolierstoffbuchse 3.2. ist eine weitere Isolierstoffbuchse 4 auf den Schaft 1.2 aufgesteckt, die an ihrer inneren Seite eine ebensolche Steigung 4.1. aufweist. Bei relativer Drehung der Isolierstoffbuchsen 3.2. und 4 zueinander gleiten die korrespondierenden Steigungen 4.1 aufeinander, verschieben die weitere Isolierstoffbuchse 4 in Längsachse des Schaftes 1.2 nach außen und bewirken damit ein Verspannen des Querbolzens 5 an der Außenseite der weiteren Isolierstoffbuchse 4, an der zusätzlich noch eine Abschirmung oder dgl. mit befestigt werden kann.
Es ist auch möglich und in der Praxis oft einfacher, die weitere Isolierstoffbuchse 4 einfach wegzulassen, so daß sich der Querbolzen 5 bei Drehung des gesamten Kontaktstückes selbst direkt auf der Steigung 4.1 an der äußeren Stirnseite der äußeren Isolierstoffbuchse 3.2 verspannt. Zur Selbsthemmung des Querbolzens 5 kann diese Steigung 4.1 mit einer Rastung 4.2 versehen sein, wie das auch die bereits erwähnte Abwicklung des Umfanges zeigt.
In den nachfolgend beschriebenen Ausführungsbeispielen verrastet sich der Querbolzen 5 jeweils auf unterschiedliche Weise ebenfalls direkt mit Steigungen, die verschiedenartig ausgebildet sein können, wie noch näher erläutert wird.
Fig. 2 zeigt eine weitere Ausführung der Kontaktanordnung, wobei bei ansonstem gleichem Aufbau statt einer zusätzlichen Isolierstoffbuchse eine ringförmige Abschirmung 6 auf den Schaft 1.2 geschoben ist, die einen inneren Rand 6.1 besitzt, der wiederum die Steigung 6.2 aufweist. Durch nicht näher dargestellte Vertiefungen auf der Steigung 6.2 kann dabei eine stabile Ruhestellung des Querbolzens 5 einfach erzielt werden. Auf der äußeren Isolierstoffbuchse 3.2 ist dann natürlich keine Steigung erforderlich.
Fig. 3 zeigt eine weitere Kontaktanordnung, bei der eine Formfeder 7 als Arretierungsmittel mit einer Steigung 7.2 wirkt. Auch bei dieser Ausführungsform entfällt natürlich eine Steigung auf der äußeren Isolierstoffbuchse 3.2.
Die Figuren 4a und 4b schließlich zeigen diese Formfeder 7 an sich. Die tellerförmige Formfeder 7 ist in sich gekrümmt, besteht aus Federstahl und weist eine innere Ausnehmung 7.1 auf. Diese Ausnehmung 7.1 ist nicht rotationssymmetrisch und so gestaltet, daß die Breite des verbleibenden gewölbten Materials über etwa 180 Grad Drehwinkel kontinuierlich zunimmt, dann wiederholt sich der Verlauf. Damit weist die Kante 7.2, die die Ausnehmung 7.1 umfaßt, die gewünschte Steigung auf. An zwei sich gegenüberliegenden Seiten ist die Ausnehmung 7.1 durch zusätzliche Ausklinkungen 7.3, 7.4 erweitert, dergestalt, daß die lichte Weite zwischen den Ausklinkungen 7.3, 7.4 etwas größer ist als die Länge des Querbolzens 5 beziehungsweise die Breite des äußeren Endes 1.3 des Kontaktstückes 1, so daß die Formfeder 7 in dieser Stellung auf den Schaft 1.2 geschoben werden kann.In the contact arrangement shown in FIG. 1, the
The cross insulation consists of a two-part insulating sleeve 3.1, 3.2, which is plugged together, the contact contour 1.1 being tight against the inner insulating sleeve 3.1.
The outer insulating sleeve 3.2. has on its outer end face a slope 4.1 repeating in the same direction over half the circumference. on. This is shown schematically by the handling of this scope in FIG. 1. Outside the outer insulating material sleeve 3.2. a further insulating material bushing 4 is plugged onto the shaft 1.2, which has the same slope 4.1 on its inner side. having. With relative rotation of the insulation bushings 3.2. and 4 the corresponding slopes 4.1 slide towards one another, shift the further insulating material bushing 4 in the longitudinal axis of the shaft 1.2 to the outside and thus cause the
It is also possible, and in practice often easier, to simply omit the further insulating material bushing 4, so that the
In the exemplary embodiments described below, the
Fig. 2 shows a further embodiment of the contact arrangement, with an otherwise identical structure instead of an additional insulating sleeve, an
Fig. 3 shows a further contact arrangement in which a
Figures 4a and 4b finally show this
Durch einfaches Verdrehen des Kontaktstückes 1 relativ zur Formfeder 7 ist die Verrastung - wie beschrieben - möglich. Auch hier sind vorteilhafterweise kleine Rastpunkte 7.5, 7.6 einander gegenüberliegend angeordnet, die wiederum eine definierte Ruhelage des Querbolzens 5 im arretierten Zustand definieren.By simply rotating the
Claims (10)
- Contact arrangement for tap selectors of tapped transformers, in which the contact member is seated by a shank (1.2) in a bore of a cylinder wall (2) and projects out of the cylinder wall (2) at the outer side by an end forming a connection surface and at the inner side by an end forming a contact profile, and an additional insulating material bush (3.1) is provided around the shank (1.2) thereof, wherein the contact profile is thickened in beadlike manner relative to the shank (1.2) and bears firmly against the inner side of the insulating material bush (3.1), characterised thereby that the shank (1.2) of the contact member (1) carries a transverse pin (5), which penetrates it radially, outside the cylinder wall (2) and that arranged at the outer side of the insulating material bush (3.2) are locking means, which have at their side facing the transverse pin (5) at least one incline (4.1, 6.1, 7.2) relative to the plane of the transverse pin (5), in such a manner that through rotation of the contact member (1) relative to the locking means this is firmly clampable in the cylinder wall (2) by means of the transverse pin (5).
- Contact arrangement according to claim 1, characterised thereby that the transverse pin (5) projects at both sides equally far out of the shank (1.2) of the contact member (1) and the locking means has an identical incline (4.1, 6.1, 7.2) in same direction each time over about a 180 degree rotational direction of the locking pin (5).
- Contact arrangement according to claim 1 or 2, characterised thereby that the outer side of the insulating material bush (3.2) itself is constructed as locking means.
- Contact arrangement according to claim 1 or 2, characterised thereby that a further insulating material bush (4), the inner side of which bears against the outer side of the first insulating material bush (3.2), has the locking means at its outer side.
- Contact arrangement according to claim 1 or 2, characterised thereby, that the incline (4.1, 6.1, 7.2) is toothed.
- Contact arrangement according to claim 1 or 2, characterised thereby that an additional shield (6), which is pushed onto the shank (1.2) of the contact member (1), has the locking means.
- Contact arrangement according to claim 1 or 2, characterised thereby that a curved spring (7), the inner side of which bears against the outer side of the insulating material bush (3.2) or of an additional shield (6) directly or by way of an interposed washer, carries the locking means.
- Contact arrangement according to claim 7, characterised thereby that the spring for locking the contact arrangement consists of thin, circular spring material curved at all sides and has a rotationally asymmetrical recess (7.1), in such a manner that an edge (7.2) of this recess (7.1) describes at least one slope.
- Contact arrangement according to claim 8, characterised thereby that the profile of the recess (7.1) is repeated after a 180 degree rotational direction, so that the edge (7.2) has in succession two identical slopes in the same direction.
- Contact arrangement according to claim 8 or 9, characterised thereby that one or more slightly recessed detent points (7.5, 7.6) are disposed on each slope.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4138000A DE4138000C1 (en) | 1991-11-19 | 1991-11-19 | |
| DE4138000 | 1991-11-19 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0543120A2 EP0543120A2 (en) | 1993-05-26 |
| EP0543120A3 EP0543120A3 (en) | 1993-06-30 |
| EP0543120B1 true EP0543120B1 (en) | 1995-04-05 |
Family
ID=6445114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92116700A Expired - Lifetime EP0543120B1 (en) | 1991-11-19 | 1992-09-30 | Contact assembly. |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5374781A (en) |
| EP (1) | EP0543120B1 (en) |
| JP (1) | JPH05226167A (en) |
| AT (1) | ATE120877T1 (en) |
| BG (1) | BG60736B1 (en) |
| CA (1) | CA2083096A1 (en) |
| DE (2) | DE4138000C1 (en) |
| HU (2) | HU9203540D0 (en) |
| RO (1) | RO110880B1 (en) |
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|---|---|---|---|---|
| CN110323092A (en) * | 2019-06-10 | 2019-10-11 | 平高集团有限公司 | A kind of moving arcing contact handling tooling |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004041317B3 (en) | 2004-08-26 | 2005-10-20 | Reinhausen Maschf Scheubeck | Contact configuration |
| ITVI20070199A1 (en) * | 2007-07-16 | 2009-01-17 | Comem Spa | REMOVABLE CONNECTION DEVICE FOR VACUUM SWITCHES FOR ELECTRIC TRANSFORMERS. |
| WO2011079860A1 (en) * | 2009-12-29 | 2011-07-07 | Abb Technology Ltd | A contact unit for a high-voltage device |
| EP2637186B1 (en) * | 2012-03-07 | 2014-09-17 | ABB Technology Ltd | A tap selector and a method for assembling a tap selector |
| EP3086342A1 (en) | 2015-04-21 | 2016-10-26 | ABB Technology Ltd | A fixed contact for a tap changer and a method for mounting a cable lug thereto |
| CN110176370B (en) * | 2019-06-04 | 2020-11-13 | 上海华明电力设备制造有限公司 | Drum-type off-circuit tap-changer gear display device |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7121024U (en) * | 1971-05-29 | 1971-08-26 | Gebrueder Scheubeck Kg | CONTACT ARRANGEMENT FOR TAP SWITCHES OF CONTROL TRANSFORMERS |
| FR2228308A1 (en) * | 1973-05-03 | 1974-11-29 | Gerardin Maurice | Demountable stator contacts for transformer switches - allows easy replacement of contacts and connection of wiring, using bayonet couplings |
| US4025714A (en) * | 1975-04-04 | 1977-05-24 | Electrical Utilities Company | Self-locking terminal assembly |
| US3975579A (en) * | 1975-12-03 | 1976-08-17 | The United States Of America As Represented By The Secretary Of The Navy | Conical face-seal for an electrical feedthrough |
| US4031311A (en) * | 1976-03-15 | 1977-06-21 | Westinghouse Electric Corporation | Electrical bushing |
| US4120555A (en) * | 1977-04-04 | 1978-10-17 | Eltra Corporation | Connector-terminal assembly for electrical conductors |
| DE8229692U1 (en) * | 1982-10-22 | 1984-03-29 | Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg | CONTACT PIECE FOR STEPPING SWITCHES OF STEPPING TRANSFORMERS |
| DE3313741A1 (en) * | 1983-04-15 | 1984-10-18 | Transformatoren Union Ag, 7000 Stuttgart | FIXED CONTACT FOR ARRANGEMENT IN THE WALL OF INSULATING CYLINDERS OF LOAD SELECTORS FOR TRANSFORMERS |
| DE3801151A1 (en) * | 1988-01-16 | 1989-07-27 | Reinhausen Maschf Scheubeck | METHOD FOR ATTACHING A CONTACT PIECE SITTING IN AN INSULATING WALL |
| DE3801152A1 (en) * | 1988-01-16 | 1989-07-27 | Reinhausen Maschf Scheubeck | CONTACT ARRANGEMENT SITTING IN AN INSULATING WALL FOR STEPPERS OF STEPPING TRANSFORMERS |
| DE3936420A1 (en) * | 1989-11-02 | 1991-05-08 | Reinhausen Maschf Scheubeck | Screened contact for transformer tap switch - has screen held on shaft by recessed spring plate, insertable over contact end |
| DE9010730U1 (en) * | 1990-07-18 | 1991-08-14 | Maschinenfabrik Reinhausen Gmbh, 93059 Regensburg | Contact arrangement |
| US5272280A (en) * | 1991-06-13 | 1993-12-21 | Northern Telecom Limited | Overvoltage protector assembly |
-
1991
- 1991-11-19 DE DE4138000A patent/DE4138000C1/de not_active Expired - Fee Related
-
1992
- 1992-09-30 DE DE59201837T patent/DE59201837D1/en not_active Expired - Fee Related
- 1992-09-30 AT AT92116700T patent/ATE120877T1/en active
- 1992-09-30 EP EP92116700A patent/EP0543120B1/en not_active Expired - Lifetime
- 1992-10-29 US US07/968,424 patent/US5374781A/en not_active Expired - Fee Related
- 1992-11-11 HU HU9203540A patent/HU9203540D0/en unknown
- 1992-11-11 HU HU9203540A patent/HU210886B/en not_active IP Right Cessation
- 1992-11-16 BG BG97086A patent/BG60736B1/en unknown
- 1992-11-17 RO RO92-01434A patent/RO110880B1/en unknown
- 1992-11-17 CA CA002083096A patent/CA2083096A1/en not_active Abandoned
- 1992-11-18 JP JP4308993A patent/JPH05226167A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323092A (en) * | 2019-06-10 | 2019-10-11 | 平高集团有限公司 | A kind of moving arcing contact handling tooling |
| CN110323092B (en) * | 2019-06-10 | 2020-12-11 | 平高集团有限公司 | Moving arc contact loading and unloading tool |
Also Published As
| Publication number | Publication date |
|---|---|
| US5374781A (en) | 1994-12-20 |
| DE59201837D1 (en) | 1995-05-11 |
| BG97086A (en) | 1994-03-24 |
| JPH05226167A (en) | 1993-09-03 |
| DE4138000C1 (en) | 1993-03-04 |
| BG60736B1 (en) | 1996-01-31 |
| HU210886B (en) | 1995-09-28 |
| HU9203540D0 (en) | 1993-03-29 |
| RO110880B1 (en) | 1996-04-30 |
| EP0543120A3 (en) | 1993-06-30 |
| EP0543120A2 (en) | 1993-05-26 |
| HUT62725A (en) | 1993-05-28 |
| ATE120877T1 (en) | 1995-04-15 |
| CA2083096A1 (en) | 1993-05-20 |
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