EP0829092B1 - Electromagnetic switch - Google Patents
Electromagnetic switch Download PDFInfo
- Publication number
- EP0829092B1 EP0829092B1 EP96914084A EP96914084A EP0829092B1 EP 0829092 B1 EP0829092 B1 EP 0829092B1 EP 96914084 A EP96914084 A EP 96914084A EP 96914084 A EP96914084 A EP 96914084A EP 0829092 B1 EP0829092 B1 EP 0829092B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact bridge
- switching device
- contact
- bridge carrier
- electromagnetic switching
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
- H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/06—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electromagnetic opening
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/001—Means for preventing or breaking contact-welding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/546—Contact arrangements for contactors having bridging contacts
Definitions
- the invention relates to an electromagnetic Switchgear with an electromagnet for operational Switching currents in the load range and with one in series switched quick release to protect against welding of fixed contacts and moving contacts in the overload area, with a switching chamber, with an arcing chamber with Extinguishing sheets and with a contact bridge carrier.
- a generic electromagnetic switching device is off known from DE 37 13 412 A1.
- the contact bridge carrier will here by means of a rocker arm opposite to the contact bridge carrier Contactor magnets laterally offset operated.
- the electromagnetic contactor drive and the Quick releases are on both sides of the longitudinal central axis of the Contact bridge carrier arranged in parallel next to each other.
- the the contact spring causing the contact pressure is supported against the case back. It will have a high short circuit breaking capacity by providing appropriately generously dimensioned Arc chambers reached in the for attachment provided lower housing part. However, this is Execution associated with a relatively large volume.
- the contactor magnet can be moved with its movable part guided yoke attached, of which a plunger in Direction of actuation of the contactor magnet against a switching rocker protrudes through which the contact bridge support can be actuated is.
- the contactor magnet is coupled to the contact bridge carrier relatively complex.
- the necessary for this Elements for power transmission are the number of starts correspondingly often exposed to stress and can increase the risk of failure of the switch.
- the electrical switch disclosed in DE 41 04 533 C2 is also generic. This essentially exists of an arc housing and one coupled to it Operating or operating mechanism housing in which the Electromagnet and the quick release in parallel next to each other are arranged.
- the quick release is in the middle of the contact bridge support arranged, i.e. the longitudinal center line of his Percussion pin for actuating the contact system is also flush that of the contact bridge support.
- the electromagnet includes essentially a fixed iron core, a movable one Iron core and a coil. On the movable iron core is a transmission component attached, the movement of the movable iron core, i.e.
- the invention is therefore based on the object of an electromagnetic To create switching device of the type mentioned above, a simple switching mechanism over the electromagnet and thus for switching nominal currents high reliability and durability (e.g. 10 million) guaranteed without the protection against welding Overflow in the overload area by the quick release is impaired.
- this is solved by that the electromagnet is arranged in the center of the contact bridge carrier and is directly coupled to it, and that the Quick release via a rocker on the moving contact works.
- This solution takes advantage of the fact that the switching frequency during the service life of the switching device for switching currents within the nominal range is higher than that of the quick release to protect against Overload currents. Accordingly, the stresses in the Circuitry involved in the nominal current range much more often and therefore larger.
- a direct coupling of the Electromagnets on the contact bridge carrier is therefore advantageous. For the comparatively less frequent switching of overcurrents can be operated by the Quick triggers are made using a rocker.
- a switching device with a particularly small construction volume is achieved if the quick release and the switching chamber in parallel are arranged side by side.
- the electromagnetic switching device 1 has an electromagnetic one Drive for operational switching of currents in the Load range and a quick release in line with it for protection against currents in the overload range. It also points out a switching chamber 4 with fixed contacts 5, with movable Contacts 6, with a quenching chamber 7 with quenching plates and one Contact bridge carrier 8, to the center in the following Space an electromagnet 9, 10, 11 as a contactor magnet is arranged, the axes in the direction of movement of the Contact bridge carrier 8 and the electromagnet 9,10,11 with each other swear.
- the electromagnet which essentially consists of a yoke 9, a coil 10 and an armature 11 is via its anchor 11 directly to the contact bridge support 8 connected, which reduces the volume of the switching device and brings a cost saving.
- the also on the Contact bridge carrier 8 acting quick releases 12, 13, 14 lies in the switching chamber 4 parallel to the contact bridge carrier 8, i.e. also compared to the electromagnet 9, 10, 11.
- the quick release mechanism 12, 13, 14 has a coil 12, a yoke 13 and an anchor with actuating pin 14, which is over a rocker 15 acts on the contact bridge carrier 8.
- the coil 12 is in Row connected to one of the fixed contacts 5 and is over one led out of the housing 16 of the switching device 1 Pin 22 connectable. This can be advantageous be used to connect a circuit breaker.
- the rocker 15 dips with its one leg 17 into a window 19 of the contact bridge support 8 and takes when actuated of the trigger 12,13,14 against the movable contact 6 the force of the contact pressure spring 21 in the opening direction with by the actuating pin 14 on the other leg 18 of the rocker 15 presses.
- a contact pressure spring 21 is in the Contact bridge support 8 supported.
- the rocker 15 is through a spring 20 which engages the leg 18 into which the Contacts 5,6 closing position pressed.
- the electromagnet 9,10,11 For switching the contact arrangement within the nominal current range the electromagnet 9,10,11 is used, the against the back pressure force of a back pressure spring, not shown here with its anchor 11 moves the contact bridge support 8, so that under the action of the contact pressure spring lying in it 21 the contacts 5,6 are closed. Becomes the current flow in the coil 10 of the electromagnet is interrupted, contacts 5,6 are opened by the back pressure spring.
- the quick release 12, 13, 14 is dimensioned such that he with overcurrents flowing over the contact arrangement, with which is also applied to its coil 12, responds and his actuating pin 14 abruptly seesaw 15 tilts that moves the moving contact 6 instantaneously and tears the contacts 5,6. This way when it occurs welding prevents contacts 5.6 from overcurrents.
- the drawing also shows a circuit breaker on the the electromagnetic switching device via its connector pin 22 is connected.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Description
Die Erfindung bezieht sich auf ein elektromagnetisches Schaltgerät mit einem Elektromagneten zum betriebsmäßigen Schalten von Strömen im Lastbereich und mit einem in Reihe geschalteten Schnellauslöser zum Schutz gegen Verschweißen von Festkontakten und beweglichen Kontakten im Überlastbereich, mit einer Schaltkammer, mit einer Löschkammer mit Löschblechen und mit einem Kontaktbrückentrager.The invention relates to an electromagnetic Switchgear with an electromagnet for operational Switching currents in the load range and with one in series switched quick release to protect against welding of fixed contacts and moving contacts in the overload area, with a switching chamber, with an arcing chamber with Extinguishing sheets and with a contact bridge carrier.
Ein gattungsgemäßes elektromagnetisches Schaltgerät ist aus der DE 37 13 412 A1 bekannt. Der Kontaktbrückenträger wird hier mittels Kipphebel durch einen gegenüber dem Kontaktbrückenträger seitlich versetzt angeordneten Schützmagneten betätigt. Der elektromagnetische Schützantrieb und der Schnellauslöser sind beiderseits der Längsmittelachse des Kontaktbrückenträgers parallel nebeneinander angeordnet. Die den Kontaktandruck bewirkende Kontaktfeder stützt sich gegen den Gehäuseboden ab. Es wird ein hohes Kurzschlußausschaltvermögen durch Bereitstellung entsprechend großzügig dimensionierter Lichtbogenkammern erreicht, die im zur Befestigung vorgesehenen Gehäuseunterteil liegen. Allerdings ist diese Ausführung mit einem relativ großen Bauvolumen verbunden. Der Schützmagnet ist mit seinem beweglichen Teil an ein verschiebbar geführtes Joch befestigt, von dem ein Stößel in Betätigungsrichtung des Schützmagneten gegen eine Schaltwippe hervorsteht, über die der Kontaktbrückenträger betätigbar ist. Somit ist die Ankopplung des Schützmagneten an den Kontaktbrückenträger relativ aufwendig. Die hierfür erforderlichen Elemente zur Kraftübertragung sind der Schalthäufigkeit entsprechend oft Beanspruchungen ausgesetzt und können das Ausfallrisiko des Schalters erhöhen. A generic electromagnetic switching device is off known from DE 37 13 412 A1. The contact bridge carrier will here by means of a rocker arm opposite to the contact bridge carrier Contactor magnets laterally offset operated. The electromagnetic contactor drive and the Quick releases are on both sides of the longitudinal central axis of the Contact bridge carrier arranged in parallel next to each other. The the contact spring causing the contact pressure is supported against the case back. It will have a high short circuit breaking capacity by providing appropriately generously dimensioned Arc chambers reached in the for attachment provided lower housing part. However, this is Execution associated with a relatively large volume. Of the Contactor magnet can be moved with its movable part guided yoke attached, of which a plunger in Direction of actuation of the contactor magnet against a switching rocker protrudes through which the contact bridge support can be actuated is. Thus, the contactor magnet is coupled to the contact bridge carrier relatively complex. The necessary for this Elements for power transmission are the number of starts correspondingly often exposed to stress and can increase the risk of failure of the switch.
Der in der DE 41 04 533 C2 offenbarte elektrische Schalter ist ebenfalls gattungsgleich. Dieser besteht im wesentlichen aus einem Lichtbogengehäuse und einem an diesem angekoppelten Betriebs- oder Betätigungsmechanismusgehäuse, in dem der Elektromagnet und der Schnellauslöser parallel nebeneinander angeordnet sind. Der Schnellauslöser ist mittig zum Kontaktbrückenträger angeordnet, d.h. die Längsmittellinie seines Schlagstifts zur Betätgigung des Kontaktsystems fluchtet mit derjenigen des Kontaktbrückenträgers. Der Elektromagnet umfaßt im wesentlichen einen festen Eisenkern, einen beweglichen Eisenkern und eine Spule. An dem beweglichen Eisenkern ist ein Übertragungsbauteil befestigt, das bei Bewegung des beweglichen Eisenkerns, d.h. bei Strombeaufschlagung der Spule, auf einen um eine feste Drehachse schwenkbaren Balken drückt, der dadurch den Kontaktbrückenträger freigibt und den Kontaktschluß bewirkt. Die Betätigung des Kontaktbrückenträgers durch den Elektromagneten erfolgt also nicht direkt sondern über verschiedene Gestänge bzw. Zwischenglieder. Außerdem ergibt sich durch die parallele Anordnung des Auslösers und des Elektromagneten parallel nebeneinander ein relativ großes Bauvolumen.The electrical switch disclosed in DE 41 04 533 C2 is also generic. This essentially exists of an arc housing and one coupled to it Operating or operating mechanism housing in which the Electromagnet and the quick release in parallel next to each other are arranged. The quick release is in the middle of the contact bridge support arranged, i.e. the longitudinal center line of his Percussion pin for actuating the contact system is also flush that of the contact bridge support. The electromagnet includes essentially a fixed iron core, a movable one Iron core and a coil. On the movable iron core is a transmission component attached, the movement of the movable iron core, i.e. when current is applied to the Coil, on a bar pivotable about a fixed axis of rotation presses, which thereby releases the contact bridge carrier and the Contact closes. The actuation of the contact bridge support through the electromagnet does not take place directly but via various linkages or intermediate links. Furthermore results from the parallel arrangement of the trigger and the electromagnet in parallel side by side a relative large construction volume.
Daher liegt der Erfindung die Aufgabe zugrunde, ein elektromagnetisches Schaltgerät der obengenannten Art zu schaffen, das einen einfachen Schaltmechanismus über den Elektromagneten aufweist und damit für das Schalten von Nennströmen eine hohe Zuverlässigkeit und Lebensdauer (z.B. 10 Mio) gewährleistet, ohne daß der Schutz gegen Verschweißen bei Überströmen im Überlastbereich durch den Schnellauslöser beeinträchtigt ist. Erfindungsgemäß wird dies dadurch gelöst, daß der Elektromagnet mittig zum Kontaktbrückenträger angeordnet und an diesen direkt angekoppelt ist, und daß der Schnellauslöser über eine Wippe auf den beweglichen Kontakt wirkt. Diese Lösung nutzt vorteilhaft die Tatsache aus, daß während der Lebensdauer des Schaltgeräts die Schalthäufigkeit zur Schaltung von Strömen innerhalb des Nennbereichs weitaus höher ist als diejenige des Schnellauslösers zum Schutz gegen Überlastströme. Demgemäß sind die Beanspruchungen der bei der Schaltung im Nennstrombereich beteiligten Komponenten sehr viel häufiger und damit größer. Eine direkte Ankopplung des Elektromagneten an den Kontaktbrückenträger ist also vorteilhaft. Zum vergleichsweise selteneren Schalten von Überströmen kann ohne Einbuße an Zuverlässigkeit die Betätigung durch den Schnellauslöser über eine Wippe erfolgen.The invention is therefore based on the object of an electromagnetic To create switching device of the type mentioned above, a simple switching mechanism over the electromagnet and thus for switching nominal currents high reliability and durability (e.g. 10 million) guaranteed without the protection against welding Overflow in the overload area by the quick release is impaired. According to the invention, this is solved by that the electromagnet is arranged in the center of the contact bridge carrier and is directly coupled to it, and that the Quick release via a rocker on the moving contact works. This solution takes advantage of the fact that the switching frequency during the service life of the switching device for switching currents within the nominal range is higher than that of the quick release to protect against Overload currents. Accordingly, the stresses in the Circuitry involved in the nominal current range much more often and therefore larger. A direct coupling of the Electromagnets on the contact bridge carrier is therefore advantageous. For the comparatively less frequent switching of overcurrents can be operated by the Quick triggers are made using a rocker.
Eine vorteilhafte Weiterbildung der Erfindung besteht, wenn zum Kontaktandruck eine Kontaktdruckfeder vorgesehen ist, die im Kontaktbrückenträger abgestützt ist. Es ergeben sich hiermit Kostenvorteile durch Verkleinerung des Magnetvolumens, weil im ausgeschalteten Zustand nur noch eine kleine Rückdruckfeder erforderlich ist, die den Kontaktbrückenträger in die AUS-Stellung drückt.An advantageous development of the invention exists if a contact pressure spring is provided for contact pressure, the is supported in the contact bridge support. Hereby arise Cost advantages by reducing the magnet volume, because when switched off, only a small back pressure spring is required which the contact bridge carrier in presses the OFF position.
Es ist weiterhin vorteilhaft, wenn die Wippe mit ihrem einen Schenkel in ein Fenster des Kontaktbrückenträgers eintaucht und nur im Überlastfall betätigt wird.It is also advantageous if the seesaw with its one Immersed leg in a window of the contact bridge carrier and is only operated in the event of an overload.
Ein Schaltgerät mit besonders kleinem Bauvolumen wird erreicht, wenn der Schnellauslöser und die Schaltkammer parallel nebeneinander angeordnet sind.A switching device with a particularly small construction volume is achieved if the quick release and the switching chamber in parallel are arranged side by side.
Eine einfache Ausführung besteht, wenn die Wippe mittels einer Dreh-, Zug- oder Druckfeder innerhalb oder außerhalb des Schnellauslösers in der Öffnungsstellung gehalten ist.A simple version exists if the rocker is by means of a Torsion, tension or compression spring inside or outside the Quick release is held in the open position.
Zum Anschluß eines Leistungsschalters an das Schaltgerät ist es von Vorteil, wenn auf der Seite des Schnellauslösers ein Anschlußstift vorgesehen ist, der leicht an die Kontaktanschlußschraube des Leistungsschalters angeklemmt werden kann.To connect a circuit breaker to the switching device it is an advantage if on the side of the quick release Connector pin is provided, which is easy on the contact terminal screw of the circuit breaker can be connected.
Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand einer Zeichnung näher erläutert, die das elektromagnetische Schaltgerät mit seinen die Erfindung betreffenden Einzelheiten zeigt.An embodiment of the invention is described below a drawing explains the electromagnetic Switchgear with its related to the invention Shows details.
Das elektromagnetische Schaltgerät 1 hat einen elektromagnetischen
Antrieb zum betriebsmäßigen Schalten von Strömen im
Lastbereich und einen damit in Reihe liegenden Schnellauslöser
zum Schutz bei Ströme im Überlastbereich. Es weist außerdem
eine Schaltkammer 4 mit Festkontakten 5, mit beweglichen
Kontakten 6, mit einer Löschkammer 7 mit Löschblechen und einen
Kontaktbrückenträger 8 auf, zu dem mittig im sich anschließenden
Raum ein Elektromagnet 9,10,11 als Schützmagnet
angeordnet ist, wobei die Achsen in Bewegungsrichtung des
Kontaktbrückenträgers 8 und des Elektromagneten 9,10,11 miteinander
fluchten. Der Elektromagnet, der im wesentlichen aus
einem Joch 9, einer Spule 10 und einem Anker 11 besteht, ist
über seinen Anker 11 direkt mit dem Kontaktbrückenträger 8
verbunden, was das Bauvolumen des Schaltgerätes reduziert und
eine Kostenersparnis mit sich bringt. Der ebenfalls auf den
Kontaktbrückenträger 8 einwirkende Schnellauslöser 12,13,14
liegt in der Schaltkammer 4 parallel neben dem Kontaktbrückenträger
8, d.h. auch dem Elektromagneten 9,10,11 gegenüber.The electromagnetic switching device 1 has an electromagnetic one
Drive for operational switching of currents in the
Load range and a quick release in line with it
for protection against currents in the overload range. It also points out
a switching chamber 4 with fixed contacts 5, with movable
Contacts 6, with a quenching chamber 7 with quenching plates and one
Der Schnellauslöser 12,13,14 hat eine Spule 12, ein Joch 13
und einen Anker mit Betätigungsstift 14, der über eine Wippe
15 auf den Kontaktbrückenträger 8 wirkt. Die Spule 12 ist in
Reihe zu dem einen der Festkontakte 5 geschaltet und ist über
einen aus dem Gehäuse 16 des Schaltgeräts 1 herausgeführten
Anschlußstift 22 anschließbar. Dieser kann vorteilhafter Weise
zum Anschluß eines Leistungsschalters verwendet werden.
Die Wippe 15 taucht mit ihrem einen Schenkel 17 in ein Fenster
19 des Kontaktbrückenträgers 8 ein und nimmt bei Betätigung
des Auslösers 12,13,14 den beweglichen Kontakt 6 gegen
die Kraft der Kontaktdruckfeder 21 in die öffnende Richtung
mit, indem der Betätigungsstift 14 auf den anderen Schenkel
18 der Wippe 15 drückt. Eine Kontaktdruckfeder 21 ist im
Kontaktbrückenträger 8 abgestützt. Die Wippe 15 wird durch
eine Feder 20, die an dem Schenkel 18 angreift, in die die
Kontakte 5,6 schließende Stellung gedrückt.The
Zum Schalten der Kontaktanordnung innerhalb des Nennstrombereichs
wird der Elektromagnet 9,10,11 verwendet, der gegen
die Rückdruckkraft einer hier nicht dargestellten Rückdruckfeder
mit seinem Anker 11 den Kontaktbrückenträger 8 verschiebt,
so daß unter Wirkung der in diesem liegenden Kontaktdruckfeder
21 die Kontakte 5,6 geschlossen werden. Wird
der Stromfluß in der Spule 10 des Elektromagneten unterbrochen,
werden die Kontakte 5,6 durch die Rückdruckfeder geöffnet.
Der Schnellauslöser 12,13,14 ist derart bemessen, daß
er bei über die Kontaktanordnung fließenden Überströmen, mit
denen auch seine Spule 12 beaufschlagt wird, anspricht und
dabei sein Betätigungsstift 14 schlagartig die Wippe 15
kippt, die den beweglichen Kontakt 6 unverzögert bewegt und
die Kontakte 5,6 aufreißt. Auf diese Weise wird bei Auftreten
von Überströmen ein Verschweißen der Kontakte 5,6 verhindert.For switching the contact arrangement within the nominal current range
the
Die Zeichnung zeigt außerdem einen Leistungsschalter, an dem
das elektromagnetische Schaltgerät über seinen Anschlußstift
22 angeschlossen ist.The drawing also shows a circuit breaker on the
the electromagnetic switching device via its
Claims (6)
- Electromagnetic switching device (1) having an electromagnet (9, 10, 11) for operationally switching currents in the load range and having an instantaneous release (12, 13, 14) connected in series, for protection against welding of fixed contacts (5) and movable contacts (6) in the overload range, having an arcing chamber (4), having an extinction chamber (7) with splitters and having a contact bridge carrier (8), characterized in that the electromagnet (9, 10, 11) is arranged in the middle relative to the contact bridge carrier (8) and is coupled directly to the latter, and in that the instantaneous release (12, 13, 14) acts on the movable contact (6) via a rocker (15).
- Electromagnetic switching device according to Claim 1, characterized in that the contact pressure spring (21) is supported in the contact bridge carrier (8).
- Electromagnetic switching device according to Claim 1 or 2, characterized in that the rocker (15) dips with one (17) of its limbs into a window (19) of the contact bridge carrier (8) and is actuated only in the case of overload.
- Electromagnetic switching device according to one of the preceding claims, characterized in that the instantaneous release (12, 13, 14) is arranged in the arcing chamber (4) such that the actuating direction of the instantaneous release (12, 13, 14) and contact bridge carrier (8) are parallel.
- Electromagnetic switching device according to one of the preceding claims, characterized in that the rocker (15) is held in the open position by means of a torsion spring (20).
- Electromagnetic switching device according to one of the preceding claims, characterized in that there is provided on the side of the instantaneous release (12, 13, 14) a terminal post (22).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19519756A DE19519756C1 (en) | 1995-05-30 | 1995-05-30 | Electromagnetic switching device for load currents |
| DE19519756 | 1995-05-30 | ||
| PCT/DE1996/000864 WO1996038851A1 (en) | 1995-05-30 | 1996-05-15 | Electromagnetic switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0829092A1 EP0829092A1 (en) | 1998-03-18 |
| EP0829092B1 true EP0829092B1 (en) | 1999-01-20 |
Family
ID=7763193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96914084A Expired - Lifetime EP0829092B1 (en) | 1995-05-30 | 1996-05-15 | Electromagnetic switch |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5880658A (en) |
| EP (1) | EP0829092B1 (en) |
| CN (1) | CN1063281C (en) |
| DE (1) | DE19519756C1 (en) |
| WO (1) | WO1996038851A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414530B (en) * | 2008-11-25 | 2010-12-22 | 福州大学 | Electric appliance rapid disjunction motion mechanism based on main circuit current excitation |
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|---|---|---|---|---|
| DE19617136C2 (en) * | 1996-04-29 | 2000-05-11 | Siemens Ag | Switchgear |
| DE19809205A1 (en) * | 1998-03-04 | 1999-04-15 | Siemens Ag | Magnetic system with over current release esp. contactor |
| DE102004062269A1 (en) * | 2004-12-23 | 2006-07-13 | Siemens Ag | Method and device for safe operation of a switching device |
| DE102004062266A1 (en) * | 2004-12-23 | 2006-07-13 | Siemens Ag | Method and device for safe operation of a switching device |
| DE102004062270B4 (en) * | 2004-12-23 | 2012-08-30 | Siemens Ag | Method and device for safe operation of a switching device and switching device |
| US8188819B2 (en) * | 2006-09-21 | 2012-05-29 | Siemens Aktiengesellschaft | Switching device unit for switiching at least two operating states |
| DE102009043415B3 (en) | 2009-09-29 | 2010-10-14 | Siemens Aktiengesellschaft | Freewheeling circuit |
| CN102005343B (en) * | 2010-10-22 | 2015-01-14 | 国家电网公司 | Contact adhesion preventing breaker |
| CN103198943B (en) * | 2013-04-09 | 2015-06-03 | 浙江正泰电器股份有限公司 | Switching device with amplified clearance between open contacts according to needs |
| JP6202200B2 (en) * | 2014-05-20 | 2017-09-27 | 富士電機機器制御株式会社 | Magnetic contactor |
| CN107680892A (en) * | 2016-08-02 | 2018-02-09 | 天津中电华利电器科技集团有限公司 | A kind of intelligent Fuse switch |
| DE112019000694A5 (en) * | 2018-02-07 | 2020-10-15 | Tdk Electronics Ag | Switching device for switching an electrical load |
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-
1995
- 1995-05-30 DE DE19519756A patent/DE19519756C1/en not_active Expired - Fee Related
-
1996
- 1996-05-15 US US08/973,294 patent/US5880658A/en not_active Expired - Fee Related
- 1996-05-15 EP EP96914084A patent/EP0829092B1/en not_active Expired - Lifetime
- 1996-05-15 WO PCT/DE1996/000864 patent/WO1996038851A1/en active IP Right Grant
- 1996-05-15 CN CN96193888A patent/CN1063281C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414530B (en) * | 2008-11-25 | 2010-12-22 | 福州大学 | Electric appliance rapid disjunction motion mechanism based on main circuit current excitation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1184553A (en) | 1998-06-10 |
| CN1063281C (en) | 2001-03-14 |
| WO1996038851A1 (en) | 1996-12-05 |
| EP0829092A1 (en) | 1998-03-18 |
| DE19519756C1 (en) | 1996-07-25 |
| US5880658A (en) | 1999-03-09 |
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