EP1618579A1 - Elektromechanisches schaltgerät - Google Patents
Elektromechanisches schaltgerätInfo
- Publication number
- EP1618579A1 EP1618579A1 EP04719975A EP04719975A EP1618579A1 EP 1618579 A1 EP1618579 A1 EP 1618579A1 EP 04719975 A EP04719975 A EP 04719975A EP 04719975 A EP04719975 A EP 04719975A EP 1618579 A1 EP1618579 A1 EP 1618579A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- auxiliary
- contact bridge
- bridge
- main
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2025—Bridging contacts comprising two-parallel bridges
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2016—Bridging contacts in which the two contact pairs commutate at substantially different moments
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/541—Auxiliary contact devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/541—Auxiliary contact devices
- H01H50/543—Auxiliary switch inserting resistor during closure of contactor
Definitions
- the invention relates to an electromechanical switching device / in particular a capacitor contactor, according to the preamble of claim 1.
- a switching device is known for example from DE 31 05 117 C2.
- the switching device known from DE 31 05 117 C2 has main contacts and leading contacts, also referred to as auxiliary contacts, which are interconnected with damping resistors under capacitive loading.
- auxiliary contacts which are interconnected with damping resistors under capacitive loading.
- the auxiliary contacts When the switching device or capacitor contactor is switched on, the auxiliary contacts initially close, so that a connected capacitor is initially precharged via the damping series resistors. This weakens the inrush current when the main contacts close.
- the main contacts open, which thus switch off almost without current. Overall, therefore, arcing arises predominantly on the main contacts. Since such arcing leads to changes in the contact pieces, the risk of welding increases.
- auxiliary contacts which form a zero-point extinguisher, have a relatively long arcing time when switched off, which shortens the life of the device.
- the actuation of the main contacts could be decoupled from the actuation of the auxiliary contacts, but this would require a relatively complex construction of the switching mechanism.
- the invention is based on the object of specifying an electromechanical, in particular electromagnetic, switching device with a main contact and an auxiliary contact leading in advance during the switch-on process, in particular for reducing an inrush current peak, which can be achieved with simpler Characterized by a particularly low wear due to arcing at the main and / or auxiliary contact.
- This object is achieved according to the invention by an electromechanical switching device with the features of claim 1 and by an electromechanical switching device with the features of claim 6.
- This switching device has a main contact which has a number, generally two, main fixed contacts and one with them connectable movable main contact bridge comprises.
- the switching device has an auxiliary contact that precedes the switch-on process and, analogously, comprises a number of auxiliary fixed contacts and a movable auxiliary contact bridge that can be connected to them.
- a contact bridge holder or carrier mechanically connected to the two contact bridges is provided for actuating both the main contact and the auxiliary contact. At least one of the contact parts main fixed contact, main contact bridge, auxiliary fixed contact and auxiliary contact bridge is spring-loaded.
- the auxiliary contact bridge or the at least one auxiliary fixed contact can assume two stable positions which are defined relative to the contact bridge holder in the case of the bistable auxiliary contact bridge or relative to a rigid structure of the switching device in the case of the bistable auxiliary contact.
- the switching device When the switching device is switched on, when the auxiliary contact closes, the auxiliary contact bridge or the auxiliary fixed contact is in the first position and thus ensures the switching behavior of the auxiliary contact, which leads the main contact.
- the auxiliary contact bridge or the auxiliary fixed contact is in the second stable position, at least at the time of opening of the auxiliary contact, by which the switching contact of the auxiliary contact also leads in advance during the switching-off process, i.e. the auxiliary contact opens before the main contact. Switching between the first and the second stable position of the Auxiliary contact bridge or the auxiliary fixed contact or the auxiliary fixed contacts occurs when the contact bridge carrier is actuated.
- Switching device is designed such that only in the first position of the auxiliary contact bridge or the auxiliary fixed contact, the auxiliary contact bridge can be electrically connected to the auxiliary fixed contacts when the contact bridge holder is actuated, while in the second position of the auxiliary contact bridge or the auxiliary fixed contact, the auxiliary contact bridge regardless of the position of the contact bridge carrier is always separated from the auxiliary contacts.
- the auxiliary contact bridge or the auxiliary fixed contact When the electromechanical switching device is switched on, the auxiliary contact bridge or the auxiliary fixed contact is transferred from the first position into the second position by actuating the contact bridge support after the main contact has been closed, the auxiliary contact thus being able to be opened after the switch-on process has ended.
- the auxiliary contact bridge or the auxiliary fixed contact When switching off, the auxiliary contact bridge or the auxiliary fixed contact is initially in the second position.
- the auxiliary contact bridge or the auxiliary fixed contact triggered again by the displacement of the contact bridge holder, in cooperation with a stop provided for this purpose, changes to the first position, but only after the main contact has opened.
- the auxiliary contact is not closed again by switching the auxiliary contact bridge or the auxiliary fixed contact during the switch-off process.
- the auxiliary contact therefore remains inoperative during the entire switch-off process.
- a space-saving design of the switching device is preferably realized in that the main and auxiliary contact bridges are arranged at least approximately parallel to one another.
- the contact bridge holder is preferably arranged perpendicular to one of the contact bridges, in particular to both contact bridges.
- the contact bridge is preferably also resiliently mounted in the contact bridge carrier, in particular with a spring arranged within the cross section of the contact bridge carrier.
- the design of the switching device corresponds in embodiments which have the features mentioned, in so far largely the design of a switching device known for example from DE 31 05 117 C2.
- the mounting of the auxiliary contact bridges in or on the contact bridge support and / or the mounting of the auxiliary fixed contacts in the switching device deviate from this known switching device.
- the auxiliary contact bridge in the switching device known from DE 31 05 117 C2 can only assume a single stable position, namely pressed by spring force in the direction of the main contact bridge, two defined stable positions of the auxiliary contact bridge are provided in the switching device according to the invention according to a first alternative.
- the auxiliary contact bridge can be displaceable relative to the contact bridge holder perpendicularly to the latter and, in particular by means of spring force support, can be snapped onto the contact bridge holder in two different positions.
- the auxiliary contact bridge is mounted in a structurally very simple manner on a suspension point that is immovable relative to the contact bridge support in or on the contact bridge support.
- the auxiliary contact bridge in order to be able to assume two different stable positions, the auxiliary contact bridge must have at least slight mobility.
- the auxiliary contact bridge is preferably designed as a snap spring which is mounted approximately centrally on the contact bridge carrier.
- the auxiliary contact bridge is rigid and non-displaceably mounted in the contact bridge support, but the auxiliary fixed contact, preferably two auxiliary fixed contacts arranged symmetrically to the contact bridge support, is designed to be resilient with two possible stable positions.
- the auxiliary fixed contact is advantageously designed as a snap spring.
- an inherently rigid auxiliary fixed contact can also be provided, which can assume two stable positions due to its movable, for example displaceable or pivotable mounting in the housing of the switching device.
- 3a to 3d show an electromechanical switching device in the second embodiment during the switch-on process
- FIGS. 1a to 1d and 2a to 2d show, in greatly simplified sectional cross-sectional representations, an electromechanical switching device 1 designed as a capacitor contactor in different switching states.
- the switching device 1 has a main contact 2 with a main contact bridge 3 and main fixed contacts 4 and an auxiliary contact 5 with an auxiliary contact bridge 6 and auxiliary fixed contacts 7.
- a contact bridge support 8 is provided for actuating the contact bridges 3, 6.
- the main contact bridge 3 is slidably mounted by means of a compression spring 9.
- the main contact bridge 3 can assume a single stable position relative to the contact bridge support 8, also referred to as a slide, namely pressed in the direction of the main fixed contacts 4.
- the auxiliary contact bridge 6 is connected to the contact bridge carrier 8 at a point which is fixed relative to the contact bridge carrier 8, namely at the suspension point 10.
- the auxiliary contact bridge 6 is designed as a snap spring, which can take two stable positions. To switch between these two stable positions of the auxiliary contact bridges 6, the auxiliary fixed contacts 7 are shown on the one hand, in the illustration below the auxiliary contacts 6, and on the other hand, two stops 11 are provided, in the illustration above the auxiliary contact bridge 6.
- FIG la shows the switching device 1 in the switched-off state.
- the auxiliary contact bridge 6 is in the first position.
- auxiliary contact 5 FIG. 1b
- the auxiliary contact bridge 6 temporarily assumes an unstable intermediate position.
- the auxiliary contact 5 remains closed.
- the main contact 2 now also closes (FIG. 1c). If the contact bridge support 8 is displaced further towards the switch-on position with compression of the spring 9 (FIG.
- the auxiliary contact bridge 6 which is mounted non-displaceably at the suspension point 10 relative to the contact bridge carrier 8, snaps, ie assumes its second stable position.
- the auxiliary contact 5 is always open in the exemplary embodiment shown, regardless of the position of the contact bridge carrier 8.
- the auxiliary contact 5 can also remain closed even when the main contact 2 is closed and only open during the switch-off process, before the main contact 2, ie in advance.
- the switch-off process of the switching device 1 is explained below with reference to FIGS. 2a to 2d.
- the state of the switching device according to FIG 2a corresponds to the state of FIG ld. If the contact bridge carrier 8 is moved in the direction of the switch-off position, upward in the illustration, the auxiliary contact 5 first opens, provided that it was not already open, as in the exemplary embodiment, and then the main contact 2 (FIG. 2c). The auxiliary contact bridge 6 strikes the stop 11 during the opening of the main contact 2 and snaps, triggered by the opening movement of the contact bridge carrier 8, back into the first stable state (FIG. 2d). However, the auxiliary contact bridge 6 has already been lifted so far from the auxiliary fixed contacts 7 that the auxiliary contact 5 no longer closes. The auxiliary contact 5 thus remains open during the entire switch-off process in the exemplary embodiment.
- the switching position according to FIG 2d corresponds to the switching position according to FIG la.
- FIGS. 3a to 3d and 4a to 4d show a switching device 1 in an alternative design, which differs from the switching device according to FIGS. 1a to 2d with regard to the design of the auxiliary contact 5.
- the auxiliary contact bridge 6 is rigid, while the auxiliary fixed contacts 7 are resilient and two stable ones Can take positions.
- the auxiliary fixed contacts 7 are clamped on one side in the housing of the switching device 1, not shown.
- the switch-on process of the switching device 1 can be seen from FIGS. 3a to 3d.
- the auxiliary fixed contacts 7 In their first stable position (FIG. 3a), the auxiliary fixed contacts 7 are bent somewhat towards the auxiliary contact bridge 6, which is arranged rigidly and straight in the illustration above this.
- the transition to the second stable position of the auxiliary auxiliary contacts 7 takes place analogously to the switching process according to FIGS. 1a to 1d. If the contact bridge carrier 8 is in the closed end position (FIG. 3d), the auxiliary contact 5 is open in the exemplary embodiment shown. Alternatively, the auxiliary contact 5 could also remain closed.
- the switching position according to FIG. 4a which marks the beginning of the switch-off process, corresponds to the switching position according to FIG. 3d.
- the stops 11 come into operation, which in this case are attached to the contact bridge support 8.
- the auxiliary fixed contacts 7 are transferred from their second stable position, in which they are deflected in the direction of the main contact 2 (FIG. 4a), to their first stable position (FIG. 4d).
- the auxiliary contact 5 remains open when the switching device 1 is switched off, analogously to FIGS. 2a to 2d. Deviating from this could be a
- Opening of the auxiliary contact 5 may also be provided only during the switch-off process, but in any case before the main contact 2 is opened.
- the switching position according to FIG. 4d corresponds to the switching position according to FIG. 3a.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Push-Button Switches (AREA)
- Slide Switches (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10315243A DE10315243B3 (de) | 2003-04-03 | 2003-04-03 | Elektromechanisches Schaltgerät |
PCT/EP2004/002618 WO2004088697A1 (de) | 2003-04-03 | 2004-03-12 | Elektromechanisches schaltgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1618579A1 true EP1618579A1 (de) | 2006-01-25 |
EP1618579B1 EP1618579B1 (de) | 2006-08-02 |
Family
ID=32748297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04719975A Expired - Lifetime EP1618579B1 (de) | 2003-04-03 | 2004-03-12 | Elektromechanisches schaltgerät |
Country Status (5)
Country | Link |
---|---|
US (1) | US7098762B2 (de) |
EP (1) | EP1618579B1 (de) |
CN (1) | CN1701405A (de) |
DE (2) | DE10315243B3 (de) |
WO (1) | WO2004088697A1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007013572B4 (de) * | 2007-03-21 | 2009-06-18 | Siemens Ag | Kontaktsystem mit einer Schaltbrücke |
DE102007016147B4 (de) * | 2007-04-02 | 2010-05-12 | Moeller Gmbh | Schaltschütz |
DE102007034989B3 (de) * | 2007-07-26 | 2009-03-12 | Schaltbau Gmbh | Mikroschalter |
DE102008057555B4 (de) * | 2008-11-15 | 2010-08-12 | Tyco Electronics Austria Gmbh | Relais mit Flip-Flop-Feder |
DE102009052626A1 (de) * | 2009-11-10 | 2011-05-12 | Siemens Aktiengesellschaft | Schaltgerät zum Schalten eines Kondensators |
CN101794681B (zh) * | 2010-03-10 | 2012-09-05 | 宁波福特继电器有限公司 | 一种控制继电器的接触组 |
DE102010032456B4 (de) | 2010-07-28 | 2012-11-29 | Schaltbau Gmbh | Elektrisches Schaltschütz |
DE102010041721A1 (de) * | 2010-09-30 | 2012-04-05 | Robert Bosch Gmbh | Schweissverhinderer bei Hochstromschalter |
CN103187188A (zh) * | 2011-12-27 | 2013-07-03 | 苏州万龙电气集团股份有限公司 | 一种pcb式多触头组联动触头装置 |
CN104078281A (zh) * | 2013-03-26 | 2014-10-01 | 刘爱民 | 一种无弧直流接触器 |
DE102013222495A1 (de) * | 2013-11-06 | 2015-05-07 | Robert Bosch Gmbh | Schützanordnung |
US9570901B2 (en) * | 2014-02-17 | 2017-02-14 | Eaton Corporation | Electronic circuit and low voltage arc flash system including an electromagnetic trigger |
US10523000B2 (en) | 2015-03-24 | 2019-12-31 | Eaton Intelligent Power Limited | Arc flash mitigation switch for quenching external arc faults in low voltage switchgear |
EP3286772B1 (de) * | 2015-04-24 | 2019-06-12 | ABB Schweiz AG | Überbrückungsschalter mit beweglichem element mit einem ersten leitfähigen abschnitt und einem zweiten leitfähigen abschnitt |
DE102015119352B4 (de) * | 2015-11-10 | 2018-06-07 | Lisa Dräxlmaier GmbH | Elektromechanischer schutzschalter |
CN105914107B (zh) * | 2016-06-22 | 2017-11-28 | 沈阳二一三控制电器制造有限公司 | 一种连接电容性元件的接触器 |
US10340640B2 (en) * | 2017-05-04 | 2019-07-02 | Schneider Electric USA, Inc. | System and method for determining the current condition of power contacts |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB640755A (en) * | 1948-06-12 | 1950-07-26 | Rotax Ltd | Improvements relating to electric switch contact mechanisms |
BE505847A (de) * | 1950-09-16 | |||
DE1254737B (de) * | 1962-05-08 | 1967-11-23 | Danfoss As | Elektromagnetisches Schaltschuetz, bei dem zwischen benachbarten Kontakten Stege in Nuten eingreifen |
DE1901965B2 (de) | 1969-01-16 | 1972-05-18 | Heddernheimer Metallwarenfabrik Ag, Werk Fluorn, 7239 Fluorn | Schaltkontakt fuer relais, schalter, tsten oder dgl. |
DE2407057C3 (de) * | 1974-02-14 | 1979-04-26 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Elektromagnetisches Schaltgerät |
DE3105117C2 (de) * | 1981-02-12 | 1985-10-17 | Siemens AG, 1000 Berlin und 8000 München | Elektromagnetisches Schaltgerät |
FR2607319B1 (fr) * | 1986-11-25 | 1989-03-03 | Mang Ets Gerard | Telerupteur comportant un inverseur auxiliaire sur son circuit de commande |
DE3743244A1 (de) * | 1987-12-19 | 1989-06-29 | Asea Brown Boveri | Schaltgeraeteanordnung zum zu- und abschalten von kondensatoren |
FR2667439B1 (fr) * | 1990-09-27 | 1992-11-27 | Telemecanique Electrique | Appareil interrupteur pour l'alimentation de charges capacitives. |
DE19729595C1 (de) * | 1997-07-10 | 1998-10-22 | Siemens Ag | Kondensatorschütz |
-
2003
- 2003-04-03 DE DE10315243A patent/DE10315243B3/de not_active Expired - Fee Related
-
2004
- 2004-03-12 DE DE502004001113T patent/DE502004001113D1/de not_active Expired - Fee Related
- 2004-03-12 WO PCT/EP2004/002618 patent/WO2004088697A1/de active IP Right Grant
- 2004-03-12 US US10/525,217 patent/US7098762B2/en not_active Expired - Fee Related
- 2004-03-12 EP EP04719975A patent/EP1618579B1/de not_active Expired - Lifetime
- 2004-03-12 CN CNA2004800009481A patent/CN1701405A/zh active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2004088697A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10315243B3 (de) | 2004-08-26 |
US7098762B2 (en) | 2006-08-29 |
WO2004088697A1 (de) | 2004-10-14 |
DE502004001113D1 (de) | 2006-09-14 |
CN1701405A (zh) | 2005-11-23 |
US20050219020A1 (en) | 2005-10-06 |
EP1618579B1 (de) | 2006-08-02 |
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