EP1618579B1 - Commutateur electromecanique - Google Patents

Commutateur electromecanique Download PDF

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Publication number
EP1618579B1
EP1618579B1 EP04719975A EP04719975A EP1618579B1 EP 1618579 B1 EP1618579 B1 EP 1618579B1 EP 04719975 A EP04719975 A EP 04719975A EP 04719975 A EP04719975 A EP 04719975A EP 1618579 B1 EP1618579 B1 EP 1618579B1
Authority
EP
European Patent Office
Prior art keywords
contact
auxiliary
contact bridge
switching device
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.)
Expired - Lifetime
Application number
EP04719975A
Other languages
German (de)
English (en)
Other versions
EP1618579A1 (fr
Inventor
Alf Wabner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1618579A1 publication Critical patent/EP1618579A1/fr
Application granted granted Critical
Publication of EP1618579B1 publication Critical patent/EP1618579B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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.
  • auxiliary contacts main contacts and leading contacts, also referred to as auxiliary contacts, which are connected together with Dämpfungsvorwidermayn at capacitive load.
  • auxiliary contacts When the switching device or capacitor contactor is switched on, the auxiliary contacts first close, so that a connected capacitor is first precharged via the damping series resistors. As a result, the inrush current is attenuated when closing the main contacts.
  • the main contacts When switching off, the main contacts first open, which thus switch off almost without power. Overall, thus occur mostly Einschaltlichtbögen to the main contacts. Since such Einschaltlichtbögen lead to changes in the contact pieces, the risk of welding increases.
  • auxiliary contacts which form a zero-point extinguisher
  • a relatively long arc burning time at switch-off occurs, whereby the life of the device is shortened.
  • 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.
  • Such a switching device is also known for example from DE 37 43 244 A1.
  • the invention has for its object to provide an electromechanical, in particular electromagnetic, switching device with a main contact and a switch-on, in particular for reducing an inrush current, leading auxiliary contact, which is easier Design characterized by a particularly low wear by arcing at the main and / or auxiliary contact.
  • This object is achieved 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 a number, usually two, main fixed contacts and a connectable with these movable Main contact bridge includes.
  • the switching device has an auxiliary contact which precedes during the switch-on process and comprises analogously a number of auxiliary fixed contacts and a movable auxiliary contact bridge which can be connected to them.
  • a contact bridge holder or carrier mechanically connected to the two contact bridges is provided. At least one of the contact parts main fixed contact, main contact bridge, auxiliary fixed contact and auxiliary contact bridge is spring-mounted.
  • 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 or in the case of the bistable auxiliary fixed contact relative to a rigid structure of the switching device in the case of bistable auxiliary contact bridge.
  • the switching device When the switching device is switched on, when the auxiliary contact is closed, the auxiliary contact bridge or the auxiliary stationary contact is in the first position and thus ensures the switching behavior of the auxiliary contact that leads the way relative to the main contact.
  • the auxiliary contact bridge or the auxiliary fixed contact in the second stable position which is given by the turn-off an anticipatory switching behavior of the auxiliary contact, that opens the auxiliary contact before the main contact.
  • the switching between the first and the second stable position of Auxiliary contact bridge or the auxiliary fixed contact or auxiliary stationary contacts is done with the operation of the contact bridge carrier.
  • this is designed such that only in the first position of the auxiliary contact bridge or the auxiliary fixed contact the auxiliary contact bridge is electrically connected to the auxiliary stationary contacts upon actuation of the contact bridge holder, while in the second position of the auxiliary contact bridge or the auxiliary fixed contact the Auxiliary contact bridge is always separated from the auxiliary stationary contacts regardless of the position of the contact bridge carrier.
  • the auxiliary contact bridge or the auxiliary fixed contact When switching on the electromechanical switching device, the auxiliary contact bridge or the auxiliary fixed contact is transferred from the first position to the second position by pressing the contact bridge carrier after closing the main contact, the auxiliary contact can thus be opened after completion of the switch-on in a preferred embodiment.
  • the auxiliary contact bridge or the auxiliary fixed contact When switching off, thus 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 in turn by the displacement of the contact bridge holder, in cooperation with a stop provided for this, in the first position, but only after the main contact is opened.
  • the auxiliary contact bridge or the auxiliary fixed contact By switching the auxiliary contact bridge or the auxiliary fixed contact during the turn-off, the auxiliary contact is not closed again. The auxiliary contact thus remains inoperative during the entire shutdown process.
  • a space-saving design of the switching device is preferably realized in that the main and the auxiliary contact bridge are arranged at least approximately parallel to each other.
  • the contact bridge holder is preferably arranged perpendicular to one of the contact bridges, in particular to both contact bridges.
  • the contact bridge is furthermore preferably spring-mounted in the contact bridge carrier, in particular with a spring arranged within the cross-section of the contact bridge carrier.
  • the structure of the switching device corresponds in embodiments, which have the features mentioned, insofar as largely the structure of a known example from DE 31 05 117 C2 switching device.
  • the storage of the auxiliary contact bridge in or on the contact bridge carrier and / or the mounting of the auxiliary stationary contacts in the switching device deviates from this known switching device.
  • the auxiliary contact bridge in the switching device known from DE 31 05 117 C2 can only occupy a single stable position, namely by spring force in the direction of the main contact bridge, two defined stable positions of the auxiliary contact bridge are provided with the switching device according to the invention according to a first alternative.
  • the auxiliary contact bridge relative to the contact bridge holder can be displaced perpendicular to this and, in particular by spring force support, be latched in two different positions on the contact bridge holder.
  • the auxiliary contact bridge is mounted in a structurally very simple manner on a relative to the contact bridge carrier immovable suspension point in or on the contact bridge carrier.
  • the auxiliary contact bridge in order to be able to assume two different stable positions, must have an at least slight mobility in itself.
  • the auxiliary contact bridge is 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 carrier, but the auxiliary fixed contact, preferably two symmetrically arranged to the contact bridge carrier auxiliary fixed contacts, resiliently formed with two possible stable positions.
  • the auxiliary stationary contact is designed as a snap spring.
  • a rigid auxiliary fixed contact which can take two stable positions by the movable, for example, displaceable or pivotable mounting in the housing of the switching device.
  • FIGS. 1a to 1d and 2a to 2d show, in greatly simplified fragmentary sectional representations, an electromechanical switching device 1 in the form of 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 stationary contacts 7.
  • a contact bridge carrier 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 By acting on the compression spring 9, the main contact bridge 3, a single stable position relative to the designated as a slide contact bridge carrier 8, namely in the direction of the main fixed contacts 4, occupy.
  • the auxiliary contact bridge 6 is in contrast to the main contact bridge 3 at a fixed relative to the contact bridge carrier 8 point, namely at the suspension point 10, connected to the contact bridge carrier 8.
  • the auxiliary contact bridge 6 is designed as a snap spring, which can take two stable positions. For switching between these two stable positions of the auxiliary contact bridge 6 are on the one hand, in the representation below the auxiliary contacts 6, the auxiliary stationary contacts 7 and on the other, in the illustration above the auxiliary contact bridge 6, two stops 11 are provided.
  • FIG 1a shows the switching device 1 in the off state.
  • the auxiliary contact bridge 6 is in the first position.
  • the switching device 1 is switched on by displacement of the contact bridge carrier 8, in the representation downward, the auxiliary contact 5 (FIG. 1b) first closes.
  • the auxiliary contact bridge 6 temporarily assumes an unstable intermediate position.
  • the auxiliary contact 5 remains closed.
  • the main contact 2 (FIG. 1c) now also closes. If the contact bridge carrier 8 is displaced further in the direction of the switch-on position while the spring 9 is compressed (FIG.
  • auxiliary contact bridge 6 also referred to as a through-pressure, so snapped at the suspension point 10 immovable relative to the contact bridge carrier 8 mounted auxiliary contact bridge 6, that takes its second stable position.
  • the auxiliary contact 5 regardless of the position of the contact bridge carrier 8, always open in the illustrated embodiment.
  • the switching device 1 is thus only the main contact 2 is closed.
  • the auxiliary contact 5 may also remain closed even when the main contact 2 is closed and open only at the turn-off, in front of the main contact 2, ie this leading.
  • the turn-off operation of the switching device 1 will be explained below with reference to FIGS. 2a to 2d.
  • the state of the switching device according to FIG. 2a corresponds to the state according to FIG. 1d. If the contact bridge carrier 8 is displaced in the direction of the switch-off position, as shown above, then the auxiliary contact 5 opens, unless it has already been opened, as in the exemplary embodiment, and then the main contact 2 (FIG. 2c).
  • the auxiliary contact bridge 6 strikes against the stop 11 during the opening of the main contact 2 and, triggered by the opening movement of the contact bridge carrier 8, snaps back into the first stable state (FIG. 2d).
  • the auxiliary contact bridge 6 is already so far lifted from the auxiliary stationary contacts 7, that the auxiliary contact 5 no longer closes.
  • the auxiliary contact 5 thus remains open in the embodiment during the entire turn-off.
  • the switching position of FIG 2d corresponds to the switching position of FIG 1a.
  • 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 respect to the design of the auxiliary contact 5.
  • the auxiliary contact bridge 6 is rigid, while the auxiliary stationary contacts 7 are resilient and two stable Can take positions.
  • the auxiliary stationary contacts 7 are clamped on one side in the housing, not shown, of the switching device 1.
  • the switch-on process of the switching device 1 can be seen in FIGS. 3a to 3d.
  • the auxiliary stationary contacts 7 are in their first stable position (FIG 3a) something on the arranged in the representation above this auxiliary contact bridge 6, which is rigid and straight, bent.
  • the transition to the second stable position of the auxiliary stationary contacts 7 takes place analogously to the switching operation according to FIGS. 1a to 1d. If the contact bridge carrier 8 is in the closed end position (FIG. 3d), then the auxiliary contact 5 is opened in the exemplary embodiment shown. Alternatively, however, the auxiliary contact 5 could also remain closed.
  • the switching position according to FIG. 4a which marks the start of the switch-off operation, corresponds to the switching position according to FIG. 3d.
  • the stops 11 When switching off the stops 11 come into operation, which are attached to the contact bridge carrier 8 in this case.
  • the auxiliary stationary contacts 7 are transferred from their second stable position, in which they are deflected in the direction of the main contact 2 (FIG. 4a), into 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. Notwithstanding this, opening of the auxiliary contact 5 could also be provided only during the switch-off operation, but in any case before opening the main contact 2.
  • the switching position according to FIG 4d corresponds to the switching position of 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)

Claims (14)

  1. Appareil électromécanique de coupure, ayant un contact (2) principal comprenant un certain nombre de contacts (4) fixes principaux et un pont (3) de contact principal mobile, un contact (5) auxiliaire en avance sur celui-ci lors de l'opération de fermeture et comprenant un certain nombre de contacts (7) fixes auxiliaires et un pont (6) de contact auxiliaire mobile et un support (8) de pont de contact prévu pour l'actionnement du pont (3) de contact principal et du pont (6) de contact auxiliaire, au moins l'une des pièces (3, 4, 6, 7) de contact étant montée élastiquement,
    caractérisé en ce qu'il est prévu deux positions stables du pont (6) de contact auxiliaire par rapport au support (8) de pont de contact, dans lequel
    • lors de la fermeture par actionnement du support (8) de pont de contact, le pont (6) de contact auxiliaire ferme dans sa première position stable le contact (5) auxiliaire en avance du contact (2) principal ; et
    • lors de l'ouverture par un actionnement en sens opposé du support (8) de pont de contact, le contact (5) auxiliaire ouvre en avance le contact (2) principal par le pont (6) de contact auxiliaire se trouvant dans la deuxième position stable.
  2. Appareil de coupure suivant la revendication 1, caractérisé en ce que, lors de l'opération de fermeture, le pont (6) de contact auxiliaire peut être mis dans cette deuxième position stable au moyen d'une action mécanique des contacts (7) fixes auxiliaires sur le pont (6) de contact auxiliaire.
  3. Appareil de coupure suivant la revendication 2, caractérisé en ce que, lors de l'opération de fermeture, par le passage, déclenché par l'actionnement du support (8) de pont de contact, entre la première et la deuxième positions stables du pont (6) de contact auxiliaire, une ouverture du contact (5) auxiliaire est déclenchée après la fermeture du contact (2) principal.
  4. Appareil de coupure suivant l'une des revendications 1 à 3, caractérisé en ce que, lors de l'opération d'ouverture, le pont (6) des contact auxiliaire peut passer dans sa première position stable au moyen d'une action mécanique d'au moins une butée (11) sur le pont (6) de contact auxiliaire.
  5. Appareil de coupure suivant l'une des revendications 1 à 4, caractérisé en ce que le pont (6) de contact auxiliaire est constitué sous la forme d'un ressort à déclic.
  6. Appareil électromécanique de coupure ayant un contact (2) principal comprenant un certain nombre de contacts (4) fixes principaux et un pont (3) de contact principal mobile, un contact (5) auxiliaire en avance sur celui-ci lors de l'opération de fermeture et comprenant un certain nombre de contacts (7) fixes auxiliaires et un pont (6) de contact auxiliaire mobile et un support (8) de pont de contact prévu pour l'actionnement du pont (3) de contact principal et du pont (6) de contact auxiliaire, au moins l'une des pièces (3, 4, 6, 7) de contact étant montée élastiquement,
    caractérisé en ce qu'il est prévu au moins deux positions stables d'un contact (7) fixe auxiliaire, dans lequel
    • lors de la fermeture par actionnement du support (8) de pont de contact, le pont (6) de contact auxiliaire vient en contact avec le contact (7) fixe auxiliaire dans sa première position stable et ferme le contact (5) auxiliaire en avance du contact (2) principal ; et
    • lors de l'ouverture par un actionnement en sens inverse du support (8) de pont de contact, le contact (5) auxiliaire ouvre en avance le contact (2) principal par le contact (7) fixe auxiliaire se trouvant dans la deuxième position stable.
  7. Appareil de coupure suivant la revendication 6, caractérisé en ce que, lors de l'opération de fermeture, le contact (7) fixe auxiliaire passe en sa deuxième position stable au moyen d'une action mécanique du pont (6) de contact auxiliaire sur le contact (7) fixe auxiliaire.
  8. Appareil de coupure suivant la revendication 7, caractérisé en ce que, lors de l'opération de fermeture, par le passage, déclenché par l'actionnement du support (8) de pont de contact, entre la première et la deuxième positions stables du contact (7) fixe auxiliaire une ouverture du contact (5) auxiliaire peut être déclenchée après la fermeture du contact (2) principal.
  9. Appareil de coupure suivant l'une des revendications 6 à 8, caractérisé en ce que, lors de l'opération d'ouverture, le contact (7) fixe auxiliaire peut passer dans sa première position stable au moyen d'une action mécanique d'au moins une butée (11) sur le contact (7) fixe auxiliaire.
  10. Appareil de coupure suivant l'une des revendications 6 à 9, caractérisé en ce que le contact (7) fixe auxiliaire est constitué en ressort en déclic.
  11. Appareil de coupure suivant l'une des revendications 6 à 10, caractérisé en ce que deux contacts (7) fixes auxiliaires sont disposés au moins à peu près symétriquement par rapport au support (8) de pont de contact.
  12. Appareil de coupure suivant l'une des revendications 1 à 11, caractérisé en ce que le pont (3) de contact principal et le pont (6) de contact auxiliaire sont disposés au moins à peu près parallèlement l'un à l'autre.
  13. Appareil de coupure suivant l'une des revendications 1 à 12, caractérisé en ce qu'au moins l'un des ponts (3, 6) de contact est disposé au moins à peu près perpendiculairement au support (8) de pont de contact.
  14. Appareil de coupure suivant l'une des revendications 1 à 13, caractérisé en ce que le pont (6) de contact auxiliaire est monté dans le support (8) de pont de contact en un point (10) de suspension ne pouvant pas se déplacer par rapport au support (8) de pont de contact.
EP04719975A 2003-04-03 2004-03-12 Commutateur electromecanique Expired - Lifetime EP1618579B1 (fr)

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 (fr) 2003-04-03 2004-03-12 Commutateur electromecanique

Publications (2)

Publication Number Publication Date
EP1618579A1 EP1618579A1 (fr) 2006-01-25
EP1618579B1 true EP1618579B1 (fr) 2006-08-02

Family

ID=32748297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04719975A Expired - Lifetime EP1618579B1 (fr) 2003-04-03 2004-03-12 Commutateur electromecanique

Country Status (5)

Country Link
US (1) US7098762B2 (fr)
EP (1) EP1618579B1 (fr)
CN (1) CN1701405A (fr)
DE (2) DE10315243B3 (fr)
WO (1) WO2004088697A1 (fr)

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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
CA3233370A1 (fr) 2015-03-24 2016-09-29 Eaton Intelligent Power Limited Commutateur d'attenuation de coup d'arc pour l'extinction des defauts d'arc exterieurs dans un commutateur basse tension
CN107533926B (zh) * 2015-04-24 2019-03-29 Abb瑞士股份有限公司 旁路开关、提供导电路径的方法和功率系统
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

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GB640755A (en) 1948-06-12 1950-07-26 Rotax Ltd Improvements relating to electric switch contact mechanisms
NL83239C (fr) * 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
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Also Published As

Publication number Publication date
DE502004001113D1 (de) 2006-09-14
WO2004088697A1 (fr) 2004-10-14
DE10315243B3 (de) 2004-08-26
US20050219020A1 (en) 2005-10-06
US7098762B2 (en) 2006-08-29
EP1618579A1 (fr) 2006-01-25
CN1701405A (zh) 2005-11-23

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