EP0358288A2 - Contact arrangement for a power circuit breaker with auxiliary and main contacts - Google Patents
Contact arrangement for a power circuit breaker with auxiliary and main contacts Download PDFInfo
- Publication number
- EP0358288A2 EP0358288A2 EP89250028A EP89250028A EP0358288A2 EP 0358288 A2 EP0358288 A2 EP 0358288A2 EP 89250028 A EP89250028 A EP 89250028A EP 89250028 A EP89250028 A EP 89250028A EP 0358288 A2 EP0358288 A2 EP 0358288A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- contacts
- contact
- main contacts
- movable
- circuit breaker
- 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
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
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts
- H01H9/383—Arcing contact pivots relative to the movable contact assembly
-
- 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
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
Definitions
- the invention relates to a contact arrangement for a circuit breaker with fixed main contacts and a pre-contact and with a pivotally mounted relative to these contacts, also having main contacts and a pre-contact contact lever and with a device for accelerated transfer occurring at the main contacts switching arcs to the pre-contacts.
- a contact arrangement of this type is known for example from DE-A-22 18 420 and DE-A-35 39 673.
- the contact arrangement according to DE-A-22 18 420 has quenching plates of such a widened design that their legs formed by incisions encompass both the preliminary contacts and the main contacts with a short distance. To accommodate such quenching plates, however, appropriately wide quenching chambers are required, which are not in themselves necessary for the switching process.
- the contact arrangement according to DE-A-35 39 673 makes it possible to use a relatively narrow arcing chamber, the width of which is less than the total width of the arrangement consisting of a plurality of main contacts arranged in parallel and a middle pair of preliminary contacts. The transfer at the main contacts of switching arcs arising to the pre-contacts takes place here by means of special arcing elements made of ferromagnetic material.
- the invention has for its object to bring about the transfer of the switching arcs on the main contacts to the pre-contacts in a simpler manner and in particular without additional parts.
- the movable contact lever has a depression near the main contacts on its underside facing away from and making contact and likewise has a depression in front of it on the opposite top side.
- the depressions of the contact lever can have a rounded contour on their base, the depression provided on the contact-making underside of the contact lever being arranged immediately after the main contact located there. With good effectiveness, this arrangement avoids an adverse influence on the strength of the contact lever.
- An important advantage of the contact arrangement according to the invention is that the device for driving the switching arcs on the main contacts is an integral part of the contact lever and is in the immediate vicinity of the main contacts.
- the contact arrangement shown in the figure can be, for example, the part of the current path of a compact low-voltage circuit breaker with an insulating housing (MCCB).
- the current path comprises a stationary connecting rail 10 with a current-transmitting joint arrangement 12, to which a joint region 14 with a circular contour belongs at the end of a contact lever 18 which is pivotably mounted about a pivot axis 16.
- the contact lever 18 is provided with a plurality of main contacts arranged parallel to one another and with an arcing horn 22 and a pre-contact 24 attached to it.
- a further fixed connecting rail 26 Opposite the movable contacts 20 and 24 attached to the contact lever 18 is a further fixed connecting rail 26, which carries fixed main contacts 28 and a fixed pre-contact 30.
- the contact lever 18 ensures that such switching arcs are transferred as quickly as possible to the pre-contacts 24 and 30, from which they are known in a known manner via arcing horns get into an extinguishing chamber.
- the contact lever 18 has a depression 32 on its contacting underside immediately following the area of the main contacts 20.
- a further depression 34 is arranged at a distance from this on the opposite upper side of the contact lever 18, which depression is formed by the kink.
- the current flowing through the contact lever 18 through the recesses 32 and 34 is caused to loop in such a way that current threads flow locally in parallel planes 38 and 40, which extend on both sides of the recess 32.
- the plane 40 runs approximately through the axes of the main contacts 20 and 28.
- areas 42 and 44 arise in the planes 38 and 40 due to the deflection of the current filaments, in which the direction of the current is opposite.
- the current loop formed in this way tends to expand in the direction of the pre-contacts 24 and 30 and thus quickly transfer the switching arcs ignited at the main contacts 20 and 28 to the pre-contacts 24 and 30 and the subsequent arcing horn 22 located at the end of the contact lever 18.
- the effect of the current loop can be made stronger or weaker. If, for example, the depression 34 is designed as a kink or offset according to the drawn-out contour of the contact lever 18, the loop effect is less than with an even more extensive depression approximately corresponding to the dashed contours 46 and 48.
- the areas 42 and 44 in the course of the current path 36, which are traversed by the current antiparallel, have different lengths depending on the design of the recess 32 and therefore result in a more or less pronounced loop effect.
- the depressions have a rounded contour.
- the strength of the contact lever 18 is influenced as little as possible.
Abstract
Eine Kontaktanordnung für einen Leistungsschalter weist bewegbare und feststehende Hauptkontakte (20, 28) sowie bewegbare und feststehende Hauptkontakte (20, 28) sowie bewegbare und feststehende Vorkontakte (24, 30) auf. Zur beschleunigten Überführung an den Hauptkontakten (20, 28) entstehender Schaltlichtbögen zu den Vorkontakten (24, 30) weist der die bewegbaren Kontakte tragende Kontakthebel (18) an seiner kontaktgebenden Unterseite eine Vertiefung (32) und im Abstand hiervon an der gegenüberliegenden Oberseite ebenfalls eine Vertiefung (34) auf. Die Vertiefungen (32, 34) bewirken einen Verlauf des Strompfades (36) innerhalb des Kontakthebels (18) in Form einer Schleife derart, daß an den Hauptkontakten (20, 28) entstehende Schaltlichtbögen elektrodynamisch in Richtung der Vorkontakte (24, 30) verschoben werden. Die beschriebene Kontaktanordnung eignet sich beispielsweise für Niederspannungs-Leistungsschalter in kompakter Bauart mit Isolierstoffgehäuse.A contact arrangement for a circuit breaker has movable and fixed main contacts (20, 28) and movable and fixed main contacts (20, 28) as well as movable and fixed pre-contacts (24, 30). To accelerate the switching arcs arising at the main contacts (20, 28) to the pre-contacts (24, 30), the contact lever (18) carrying the movable contacts has a recess (32) on its contact-making underside and, at a distance from it, also a recess (32) on the opposite top Recess (34). The depressions (32, 34) cause the current path (36) to run within the contact lever (18) in the form of a loop in such a way that switching arcs occurring on the main contacts (20, 28) are displaced electrodynamically in the direction of the preliminary contacts (24, 30) . The contact arrangement described is suitable, for example, for low-voltage circuit breakers in a compact design with an insulating housing.
Description
Die Erfindung betrifft eine Kontaktanordnung für einen Leistungsschalter mit feststehenden Hauptkontakten und einem Vorkontakt sowie mit einem relativ zu diesen Kontakten schwenkbar gelagerten, gleichfalls Hauptkontakte und einem Vorkontakt aufweisenden Kontakthebel sowie mit einer Einrichtung zur beschleunigten Überleitung an den Hauptkontakten auftretender Schaltlichtbögen zu den Vorkontakten.The invention relates to a contact arrangement for a circuit breaker with fixed main contacts and a pre-contact and with a pivotally mounted relative to these contacts, also having main contacts and a pre-contact contact lever and with a device for accelerated transfer occurring at the main contacts switching arcs to the pre-contacts.
Eine Kontaktanordnung dieser Art ist beispielsweise durch die DE-A-22 18 420 und die DE-A-35 39 673 bekannt geworden. Die Kontaktanordnung nach der DE-A-22 18 420 weist dabei Löschbleche einer derart verbreiterten Bauform auf, daß ihre durch Einschnitte gebildete Schenkel sowohl die Vorkontakte als auch die Hauptkontakte mit geringem Abstand umfassen. Zur Aufnahme solcher Löschbleche werden jedoch entsprechend breite Löschkammern benötigt, wie sie an sich für den Schaltvorgang nicht erforderlich sind. Dagegen ermöglicht es die Kontaktanordnung nach der DE-A-35 39 673, eine verhältnismäßig schmale Lichtbogenkammer zu verwenden, deren Breite geringer ist als die Gesamtbreite der aus mehreren parallel angeordneten Hauptkontakte und einem mittleren Vorkontaktpaar bestehende Anordnung. Die Überleitung an den Hauptkontakten entstehender Schaltlichtbögen zu den Vorkontakten geschieht hierbei durch besondere, aus ferromagnetischem Material bestehende Lichtbogenleitstücke.A contact arrangement of this type is known for example from DE-A-22 18 420 and DE-A-35 39 673. The contact arrangement according to DE-A-22 18 420 has quenching plates of such a widened design that their legs formed by incisions encompass both the preliminary contacts and the main contacts with a short distance. To accommodate such quenching plates, however, appropriately wide quenching chambers are required, which are not in themselves necessary for the switching process. In contrast, the contact arrangement according to DE-A-35 39 673 makes it possible to use a relatively narrow arcing chamber, the width of which is less than the total width of the arrangement consisting of a plurality of main contacts arranged in parallel and a middle pair of preliminary contacts. The transfer at the main contacts of switching arcs arising to the pre-contacts takes place here by means of special arcing elements made of ferromagnetic material.
Der Erfindung liegt die Aufgabe zugrunde, die Überleitung der Schaltlichtbögen an den Hauptkontakten zu den Vorkontakten auf einfachere Weise und insbesondere ohne zusätzliche Teile zu bewirken.The invention has for its object to bring about the transfer of the switching arcs on the main contacts to the pre-contacts in a simpler manner and in particular without additional parts.
Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß der bewegbare Kontakthebel nahe den Hauptkontakten an seiner dem Vorkontakt abgewandten und kontaktgebenden Unterseite eine Vertiefung und dieser vorgelagert an der gegenüberliegenden Oberseite gleichfalls eine Vertiefung aufweist. Diese Gestaltung führt zu einem solchen Verlauf der Strombahn innerhalb des Kontakthebels, daß die Stromfäden eine schleifenförmige Umlenkung erfahren und hierdurch unmittelbar eine elektrodynamische Vortriebskraft entsteht, die einen an den Hauptkontakten entstehenden Lichtbogen in Richtung der Vorkontakte treibt. Hierdurch wird ein Verweilen eines solchen Schaltlichtbogens an den Hauptkontakten und damit eine unerwünschte Beanspruchung der für die Dauerbelastung wichtigen Hauptkontakte vermieden. Da somit der Abbrand so gering wie möglich gehalten wird, unterbleibt eine Erosion und eine damit einhergehende Erhöhung des Übergangswiderstandes und der Erwärmung im Betrieb.This object is achieved in accordance with the invention in that the movable contact lever has a depression near the main contacts on its underside facing away from and making contact and likewise has a depression in front of it on the opposite top side. This design leads to such a course of the current path within the contact lever that the current threads undergo a loop-shaped deflection and thereby directly generate an electrodynamic propulsive force which drives an arc which arises at the main contacts in the direction of the preliminary contacts. In this way, a dwelling of such a switching arc at the main contacts and thus an undesired stress on the main contacts important for the permanent load is avoided. As the burn-up is thus kept as low as possible, erosion and a concomitant increase in contact resistance and heating during operation are avoided.
Die Vertiefungen des Kontakthebels können an ihrem Boden eine abgerundete Kontur aufweisen, wobei die an der kontaktgebenden Unterseite des Kontakthebels vorgesehene Vertiefung an den dort befindlichen Hauptkontakt unmittelbar anschließend angeordnet ist. Bei guter Wirksamkeit vermeidet diese Anordnung einen nachteiligen Einfluß auf die Festigkeit des Kontakthebels.The depressions of the contact lever can have a rounded contour on their base, the depression provided on the contact-making underside of the contact lever being arranged immediately after the main contact located there. With good effectiveness, this arrangement avoids an adverse influence on the strength of the contact lever.
Ein wesentlicher Vorteil der Kontaktanordnung nach der Erfindung besteht darin, daß die Einrichtung zum Antrieb der Schaltlichtbögen an den Hauptkontakten integraler Bestandteil des Kontakthebels ist und sich in unmittelbarer Nähe der Hauptkontakte befindet.An important advantage of the contact arrangement according to the invention is that the device for driving the switching arcs on the main contacts is an integral part of the contact lever and is in the immediate vicinity of the main contacts.
Es ist an sich bei Schaltkontakten bekannt, durch die Form eines Kontakthebels eine Stromschleife zu bilden (US-A-3 192 344). Ein solcher, insgesamt als Stromschleife ausgebildeter Kontakthebel weist jedoch eine für die gemeinsame Anwendung von Haupt- und Vorkontakten ungünstige Gestalt auf. Ferner ist es bei einem Hochspannungs-Trennschalter bekannt geworden (US-A-2 777 921), durch Einschnitte in einem Schaltstück Stromschleifen zu schaffen.It is known per se with switch contacts to form a current loop through the shape of a contact lever (US Pat. No. 3,192,344). However, such a contact lever, designed as a current loop overall, has an unfavorable shape for the common use of main and preliminary contacts on. Furthermore, it has become known in a high-voltage circuit breaker (US Pat. No. 2,777,921) to create current loops by cuts in a switching element.
Die Erfindung wird im folgenden anhand des in der Figur gezeigten Ausführungsbeispieles näher erläutert.The invention is explained below with reference to the embodiment shown in the figure.
Bei der in der Figur gezeigten Kontaktanordnung kann es sich beispielsweise um den Teil der Strombahn eines kompakten Niederspannungs-Leistungsschalters mit Isolierstoffgehäuse (MCCB) handeln. Die Strombahn umfaßt eine ortsfeste Anschlußschiene 10 mit einer stromübertragenden Gelenkanordnung 12, zu der ein Gelenkbereich 14 mit kreisförmiger Kontur am Ende eines um eine Schwenkachse 16 schwenkbar gelagerten Kontakthebels 18 gehört. An seinem gegenüberliegenden Ende ist der Kontakthebel 18 mit mehreren parallel zueinander angeordneten Hauptkontakten sowie mit einem Lichtbogenhorn 22 und einem daran angebrachten Vorkontakt 24 versehen.The contact arrangement shown in the figure can be, for example, the part of the current path of a compact low-voltage circuit breaker with an insulating housing (MCCB). The current path comprises a stationary connecting
Den an dem Kontakthebel 18 angebrachten bewegbaren Kontakten 20 und 24 gegenüberstehend ist eine weitere ortsfeste Anschlußschiene 26 angeordnet, die feststehende Hauptkontakte 28 und einen feststehenden Vorkontakt 30 trägt.Opposite the
Bei den Schaltvorgängen ist es nicht ausgeschlossen, daß auch an den hierfür nicht vorgesehenen Hauptkontakten 20 und 28 Schaltlichtbögen entstehen. Dies ist unerwünscht, weil die Hauptkontakte im Interesse eines möglichst geringen Übergangswiderstandes und damit im Interesse einer möglichst geringen Erwärmung im Zustand der Dauereinschaltung ein Abbrand oder eine sonstige ungünstige Veränderung möglichst unterbleiben soll. Da sich aber Schaltlichtbögen an dieser Stelle nicht zuverlässig vermeiden lassen, wird durch eine besondere Gestaltung des Kontakthebels 18 dafür gesorgt, daß solche Schaltlichtbögen so rasch wie möglich zu den Vorkontakten 24 und 30 übergeleitet werden, von denen sie in bekannter Weise über Lichtbogenhörner in eine Löschkammer gelangen. Wie in der Figur gezeigt, weist der Kontakthebel 18 an seiner kontaktgebenden Unterseite unmittelbar anschließend an den Bereich der Hauptkontakte 20 eine Vertiefung 32 auf. Ferner ist im Abstand hiervon an der gegenüberliegenden Oberseite des Kontakthebels 18 eine weitere Vertiefung 34 angeordnet, die durch die Abknickung gebildet ist.During the switching operations, it is not excluded that 20 and 28 switching arcs also occur at the main contacts not provided for this purpose. This is undesirable because the main contacts should, in the interest of the lowest possible contact resistance and thus in the interest of the lowest possible heating in the state of continuous switching on, avoid any erosion or other unfavorable change. However, since switching arcs cannot be reliably avoided at this point, a special design of the
Wie durch eine ausgezogene Linie 36 dargestellt, wird der durch den Kontakthebel 18 fließende Strom durch die Vertiefungen 32 und 34 zu einer schleifenförmigen Umlenkung derart veranlaßt, daß örtlich Stromfäden in parallelen Ebenen 38 und 40 fließen, die sich beidseitig der Vertiefung 32 erstrecken. Die Ebene 40 verläuft dabei etwa durch die Achsen der hauptkontakte 20 und 28. Wie anhand der Figur zu erkennen ist, entstehen aufgrund der Umlenkung der Stromfäden in den Ebenen 38 und 40 Bereiche 42 und 44, in denen die Richtung des Stromes entgegengesetzt ist. Die so gebildete Stromschleife ist bestrebt, sich in Richtung der Vorkontakte 24 und 30 zu erweitern und somit die an den Hauptkontakten 20 und 28 gezündeten Schaltlichtbögen rasch auf die Vorkontakte 24 und 30 und das anschließende, am Ende des Kontakthebels 18 befindliche Lichtbogenhorn 22 zu überführen.As shown by a
Durch die Gestalt der Vertiefung 34 kann die Wirkung der Stromschleife stärker oder schwächer bemessen werden. Wird beispielsweise die Vertiefung 34 entsprechend der ausgezogenen Kontur des Kontakthebels 18 als Knick oder Abkröpfung ausgeführt, so ist die Schleifenwirkung geringer als bei einer noch weiter reichenden Vertiefung etwa entsprechend den gestrichelten Konturen 46 und 48. Die Bereiche 42 und 44 im Verlauf der Strombahn 36, die vom Strom antiparallel durchflossen werden, sind je nach der Ausführung der Vertiefung 32 unterschiedlich lang und ergeben daher eine mehr oder weniger ausgeprägte Schleifenwirkung.Due to the shape of the
In jeder der erläuterten Ausführungen weisen die Vertiefungen eine abgerundete Kontur auf. Die Festigkeit des Kontakthebels 18 wird hierdurch so gering wie möglich beeinflußt.In each of the explanations explained, the depressions have a rounded contour. The strength of the
Claims (2)
bewegbare Kontakthebel (18) nahe den Hauptkontakten (20) an seiner dem Vorkontakt (24) abgewandten kontaktgebenden Unterseite eine Vertiefung (32) und dieser vorgelagert an der gegenüberliegenden Oberseite gleichfalls eine Vertiefung (34) aufweist.1.Contact arrangement for a circuit breaker with fixed main contacts (28) and a pre-contact (30) and with a pivotable relative to these contacts (28, 30), also main contacts (20) and a pre-contact (24) having contact lever (18) and With a device for accelerated transfer at the main contacts (20, 28) switching arcs to the pre-contacts (24, 30), characterized in that the
Movable contact levers (18) near the main contacts (20) have a depression (32) on their contact-making underside, which faces away from the pre-contact (24), and this also has a depression (34) upstream on the opposite top.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US242094 | 1988-09-08 | ||
| US07/242,094 US4926018A (en) | 1988-09-08 | 1988-09-08 | Moving mains arc movement loop |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0358288A2 true EP0358288A2 (en) | 1990-03-14 |
| EP0358288A3 EP0358288A3 (en) | 1991-01-02 |
| EP0358288B1 EP0358288B1 (en) | 1995-03-08 |
Family
ID=22913430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89250028A Expired - Lifetime EP0358288B1 (en) | 1988-09-08 | 1989-09-07 | Contact arrangement for a power circuit breaker with auxiliary and main contacts |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4926018A (en) |
| EP (1) | EP0358288B1 (en) |
| JP (1) | JPH02117022A (en) |
| CA (1) | CA1333183C (en) |
| DE (1) | DE58909080D1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3579261A1 (en) * | 2018-06-08 | 2019-12-11 | ABB Schweiz AG | High voltage disconnector |
| US10879023B1 (en) * | 2019-06-12 | 2020-12-29 | Landis+Gyr Innovations, Inc. | Progressively contacting switch |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1100811A (en) * | 1952-10-21 | 1955-09-26 | Voigt & Haeffner Ag | Circuit breaker |
| US2777921A (en) * | 1953-06-16 | 1957-01-15 | Merlin Gerin | Face-on-face contact pair for circuit breakers |
| US3192344A (en) * | 1961-08-28 | 1965-06-29 | Fed Pacific Electric Co | High interrupting capacity circuit breakers with electrodynamic latch release |
| FR1544437A (en) * | 1966-11-16 | 1968-10-31 | Licentia Gmbh | Electrical contact device |
| CH531785A (en) * | 1971-04-01 | 1972-12-15 | Westinghouse Electric Corp | Electric switch with arc extinguishing device |
| EP0206882A1 (en) * | 1985-06-12 | 1986-12-30 | Merlin Gerin | Low voltage circuit breaker with interruption |
| EP0222684A1 (en) * | 1985-11-06 | 1987-05-20 | Siemens Aktiengesellschaft | Contact arrangement for low-voltage circuit breakers with main contacts and arcing contacts |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3345485A (en) * | 1964-12-30 | 1967-10-03 | Fed Pacific Electric Co | Circuit breaker having improved arcing contact structure |
| US3585329A (en) * | 1968-01-24 | 1971-06-15 | Westinghouse Electric Corp | Circuit interrupter with improved contact structure and arc-runner |
| JPS6147035A (en) * | 1984-08-10 | 1986-03-07 | 富士電機株式会社 | Contactor structure of circuit breaker |
-
1988
- 1988-09-08 US US07/242,094 patent/US4926018A/en not_active Expired - Lifetime
-
1989
- 1989-09-04 JP JP1230262A patent/JPH02117022A/en active Pending
- 1989-09-06 CA CA000610424A patent/CA1333183C/en not_active Expired - Fee Related
- 1989-09-07 DE DE58909080T patent/DE58909080D1/en not_active Expired - Fee Related
- 1989-09-07 EP EP89250028A patent/EP0358288B1/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1100811A (en) * | 1952-10-21 | 1955-09-26 | Voigt & Haeffner Ag | Circuit breaker |
| US2777921A (en) * | 1953-06-16 | 1957-01-15 | Merlin Gerin | Face-on-face contact pair for circuit breakers |
| US3192344A (en) * | 1961-08-28 | 1965-06-29 | Fed Pacific Electric Co | High interrupting capacity circuit breakers with electrodynamic latch release |
| FR1544437A (en) * | 1966-11-16 | 1968-10-31 | Licentia Gmbh | Electrical contact device |
| CH531785A (en) * | 1971-04-01 | 1972-12-15 | Westinghouse Electric Corp | Electric switch with arc extinguishing device |
| EP0206882A1 (en) * | 1985-06-12 | 1986-12-30 | Merlin Gerin | Low voltage circuit breaker with interruption |
| EP0222684A1 (en) * | 1985-11-06 | 1987-05-20 | Siemens Aktiengesellschaft | Contact arrangement for low-voltage circuit breakers with main contacts and arcing contacts |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0358288A3 (en) | 1991-01-02 |
| JPH02117022A (en) | 1990-05-01 |
| EP0358288B1 (en) | 1995-03-08 |
| DE58909080D1 (en) | 1995-04-13 |
| US4926018A (en) | 1990-05-15 |
| CA1333183C (en) | 1994-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0047220B1 (en) | Low-voltage protective circuit breaker with blocking lever | |
| EP0174904B1 (en) | Contact device for a low voltage circuit breaker with a two-armed contact lever | |
| DE1563842B2 (en) | SELF SWITCH | |
| DE2218420A1 (en) | Electric switch with arc extinguishing device | |
| DE2838630C2 (en) | ||
| DE1258957B (en) | Contact bridge arrangement for a changeover contact relay | |
| DE2839914A1 (en) | DISCONNECTOR WITH A MAIN AND Tear-off contact | |
| EP0222684B1 (en) | Contact arrangement for low-voltage circuit breakers with main contacts and arcing contacts | |
| DE2508299A1 (en) | Contact assembly for switches - has auxiliary contact between stationary contact and moving contact for arc screening | |
| DE3432086A1 (en) | CONTACT ARRANGEMENT WITH A CURRENT-DEPENDENT POWER FOR EXTENSING THE CONTACT FORCE | |
| EP0358288A2 (en) | Contact arrangement for a power circuit breaker with auxiliary and main contacts | |
| DE2448144B2 (en) | Contact system for a hinged armature that can be rotated around an axis | |
| DE19629867C2 (en) | Current limiting circuit breaker | |
| DE2756741A1 (en) | ELECTRICAL SWITCHGEAR WITH MAGNETIC CONTACT PRESSURE AMPLIFIER | |
| DE285505C (en) | ||
| DE2502162C3 (en) | Top switches, in particular earthing switches | |
| DE102019117804B4 (en) | Switching device with an electrical contact system | |
| DE3010579A1 (en) | Switching mechanism with double contact blades - has contact positions controlled for easier release after welding due to arcing | |
| DE3143752C2 (en) | ||
| DE2737021C3 (en) | Isolation switch for low voltage | |
| DE4042424C2 (en) | Rolling electrical contact preventing cold welding | |
| EP0091082A1 (en) | Electromagnetically operable switching device | |
| DE3233004C2 (en) | ||
| AT227821B (en) | Contact arrangement, especially for switches with double interruption | |
| DE1276782B (en) | Contact device for electrical switches |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE ES FR GB IT |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE ES FR GB IT |
|
| 17P | Request for examination filed |
Effective date: 19901205 |
|
| 17Q | First examination report despatched |
Effective date: 19940119 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 19950308 Ref country code: FR Effective date: 19950308 Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19950308 Ref country code: GB Effective date: 19950308 |
|
| REF | Corresponds to: |
Ref document number: 58909080 Country of ref document: DE Date of ref document: 19950413 |
|
| EN | Fr: translation not filed | ||
| GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 19950308 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20071122 Year of fee payment: 19 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090401 |