WO2007113197A1 - appareil de commutation électrique doté d'au moins trois paires de contacts raccordées en série et s'ouvrant simultanément - Google Patents

appareil de commutation électrique doté d'au moins trois paires de contacts raccordées en série et s'ouvrant simultanément Download PDF

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Publication number
WO2007113197A1
WO2007113197A1 PCT/EP2007/053011 EP2007053011W WO2007113197A1 WO 2007113197 A1 WO2007113197 A1 WO 2007113197A1 EP 2007053011 W EP2007053011 W EP 2007053011W WO 2007113197 A1 WO2007113197 A1 WO 2007113197A1
Authority
WO
WIPO (PCT)
Prior art keywords
switching device
contact
contact arms
contacts
pairs
Prior art date
Application number
PCT/EP2007/053011
Other languages
German (de)
English (en)
Inventor
Marc Liebetruth
Michael Soukup
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2007113197A1 publication Critical patent/WO2007113197A1/fr

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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
    • H01H9/40—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
    • 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
    • H01H1/2041—Rotating bridge

Definitions

  • the invention relates to an electrical switching device, in particular ⁇ special a low-voltage circuit breaker.
  • Switchgear protects electrical networks and components in the event of a short circuit by quickly setting up a high counter-voltage. This limits the occurring short-circuit current and assists in switching off the short-circuit or deleting a developing arc.
  • systems are used for arc separation and to increase the burning voltage.
  • splitter systems Liichtbo ⁇ genlöschbleche
  • This subdivision is supported by the use of two breakpoints in the current path, as this allows a faster build up of the arc voltage can be achieved.
  • An object of the present invention is to provide electrical switching devices, in particular low-voltage circuit breakers, which ensure the opening of all pairs of contacts with low power consumption both in current-limiting as well as selective or semi-selective application.
  • the energy required for the drive to open all pairs of contacts is comparatively low, since the Be ⁇ because of all moving contacts by means of a single drive shaft.
  • the switching arrangements are characterized in that the pairs of contacts 2 comprise movable contacts 3 which are arranged on movable contact arms 4 (contact levers), wherein the contact arms 4 are preferably pivotable about an axis of rotation 5 which is perpendicular to a contact arm longitudinal direction 6.
  • the movable contacts are arranged either at townlie ⁇ ing ends 7, 8 of a contact arm 4, wherein the axis of rotation 5 preferably centrally through the contact arm 4 ver ⁇ runs.
  • the embodiment shown in FIG 1 has three arms Kon ⁇ clock 4 with six pairs of contacts arranged in series. 2
  • the exemplary embodiment shown in FIG. 2 with a star-shaped arrangement of the contact arms 4 has two contact arms 4 with four contact pairs 2.
  • the contact arms 4 are in the closed state entspre ⁇ accordingly provided fixed contacts 11, which are supported by busbars. These busbars serve either as connection bars 12 for the connection of the respective phase (input or output) and lead to the outside for this purpose, or as contact bars 13 for the electrical contacting of adjacent contact arms 4. Between the contact arms 4 and the busbars 12 , 13 are - depending on the operating voltage - insulating, for example in the form of ribs from the surrounding plastic housing, provided (not shown).
  • FIGS 1 and 2 are further distinguished by the fact that the pairs of contacts 2 from one fixed contact 11 and a movable contact 3 are formed per ⁇ wells.
  • the contact arms 4 run either parallel zueinan ⁇ ( Figure 1) or close between them an angle ⁇ less than 180 °, preferably an angle ⁇ of 90 °, a (FIG 2).
  • the contact pairs 2 remain in these embodiments always in a fixed geometric relationship to each other.
  • a Lichtbo ⁇ genhunt 14 or an arc extinguishing unit is provided for each separation section.
  • all the contact arms 4 are connected to a single drive shaft 17.
  • a movement takes place the contact arms 4 in the opening direction 18 and thus a simultaneous opening of the pairs of contacts 2.
  • the continuous and insulated drive shaft 17 a certain game to ensure the required contact pressure of the movable contacts 3 on the fixed contacts 11 in the closed state.
  • the contact arms 4 are mounted springs on the drive shaft 17.
  • the erforderig ⁇ te bias voltage is generated by attacking surfaces of the drive shaft 17 engaging spring elements 19 (contact springs) in the bearing of the drive shaft 17, see.
  • the notwendi ⁇ ge pressure is in the other embodiments either e- causes benso or by similar means.
  • the arrangement shown in FIG 1 may - if required by the situation Einbausi- - of course also be tilted by 90 °, ie, to the detriment of the pole width, mounted in such a way that the drive shaft runs 17 not horizontally but vertically ⁇ ver.
  • FIGS. 3 to 6 Exemplary embodiments of switching arrangements for low-voltage switchgear are shown in FIGS. 3 to 6, which likewise have a triple interruption in the disconnecting current path.
  • the current path is designed such that two oppositely associated contact arms. 4 produce an electrical connection of the fixed contacts 11.
  • a very high arc voltage is built up immediately after the opening. This leads to a high reverse voltage to the driving voltage and thus ensures a strong current limit and ei ⁇ ne short arc extinguishing time and thus a short shutdown ⁇ time.
  • these embodiments are characterized in that the contact pairs comprise 2 movable contacts 3, wel ⁇ che are arranged on movable contact arms 4, wherein the position of the contact arms 4 to each other in an opening of the contact pairs 2 in case of short circuit remains unchanged.
  • the two contact arms 4 form a kind of bridge construction between the fixed contacts 11.
  • the contact arms 4 pa ⁇ rallel or arranged almost parallel to each other and be ⁇ are write in the short circuit case a common circular track, WEL che simultaneous opening of all three pairs of contacts 2 result has.
  • the movement path can also be an elliptical path.
  • the bridge structure is characterized in other words, since ⁇ 4 is secured by that, which are movable, serve as a bridge elements ⁇ the contact arms 4 mounted such that over the GESAM ⁇ th movement clock poor an almost parallel guiding of the Kon ⁇ .
  • the contact arms 4 are connected to a drive device which is driven by a drive shaft 17.
  • the drive device is isolated from the contact arms 4 in order to avoid a current transfer via the drive device.
  • preferably block-shaped insulating elements 21 are used, which are arranged in the vicinity of the contact points.
  • the contact arms 4 are directed to the parallel linkage 22 such that the parallel linkage 22 rotates upon opening of the contacts and the two contact arms 4 remain in a horizontal ⁇ right position. By the rotation open and close the contact arms 4 the circuit. Due to the defined position of the contact arms 4 to each other during the opening process, a defined opening path between the bewegli ⁇ chen contacts 3 and the fixed contacts 11 is fixed.
  • an arc chamber 14 or an arc extinguishing unit is provided for each separation section, as are schematically indicated in the figures 4 and 6 in the form of splitter stack. It is thereby ensured that ignition of the arc takes place only at the contact points which are closed during operation. Annae to the movement in the case today ⁇ hernden contact ends is that no arc transition takes place with the aid of insulating elements 21 si ⁇ cherhol.
  • an inner-outer tooth structure 23 may be provided, see FIG. FIGS. 5 and 6.
  • Such a solution has the advantage that it can be adapted comparatively easily to the rotational movement of a switching mechanism.
  • the inner-outer tooth construction 23 comprises a large gear 24 and two small gears 25.
  • the large gear 24 is designed as an internal gear.
  • the two formed as external gears small gears 25 are fixedly connected to the contact arms 4 and arranged so that they engage in the teeth of the large gear 24. Rotate the large externa ⁇ ßere gear 24 counterclockwise, then turn the small, internal gears 25 in the clockwise direction and the two serving as bridge elements contact arms 4 move from ⁇ each other, whereby the circuit is opened.
  • the contact arms 24 remain in their wag shortcuten position and parallel to each other.
  • the force-generating construction is designed such that a uniform opening of all pairs of contacts 2 takes place.
  • the repelling magnetic force is due to the U-shape of the contact carriers 26 which reverses the direction of the current.
  • the acting magnetic field ⁇ and thus the blowing field for the ignition arc can thus be influenced via the changed current direction.
  • slot motors iron-circle systems
  • the resulting from the magnetic forces opening directions 18 in the event of a short circuit are shown together with the current directions 27.
  • the two fixed contacts 11 arrange ⁇ th movable contacts 3 encounter thereby from the Festkon- clock 11 as well as the two middle contacts 3 with each other.
  • All switching devices described above are characterized in that each pair of contacts 2 an arc chamber 14 is assigned. In this case, several identical (small) Lichtbo ⁇ genlöticianen be used. Alternatively, it is also possible to use a single (larger) arc unit with several chamber spaces .
  • Another advantage of the embodiments described is that even a plurality of contact arms 4 per switching path (parallel) can be used (not shown).

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

L'invention concerne un appareil de commutation électrique (1) et en particulier un commutateur de puissance basse tension, dans lequel pour chaque phase au moins trois paires de contacts (2) raccordées en série et qui s'ouvrent simultanément ou essentiellement simultanément en cas de court-circuit sont prévues et comprennent chacune au moins un contact mobile (3), et dans lequel au moins deux bras mobiles de contact (4) sur chacun desquels deux des contacts mobiles (3) sont disposés sont prévus. Pour garantir l'ouverture de toutes les paires de contacts avec de faibles besoins en énergie aussi bien en limitation de courant que dans une utilisation sélective ou partiellement sélective, l'invention propose que les bras mobiles de contact (4) puisent être déplacés dans une direction d'ouverture (18) par rotation d'un unique arbre d'entraînement (17) de manière à obtenir chaque fois un parcours de séparation entre toutes les paires de contacts (2).
PCT/EP2007/053011 2006-03-31 2007-03-29 appareil de commutation électrique doté d'au moins trois paires de contacts raccordées en série et s'ouvrant simultanément WO2007113197A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610016273 DE102006016273A1 (de) 2006-03-31 2006-03-31 Elektrisches Schaltgerät
DE102006016273.0 2006-03-31

Publications (1)

Publication Number Publication Date
WO2007113197A1 true WO2007113197A1 (fr) 2007-10-11

Family

ID=38043656

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/053011 WO2007113197A1 (fr) 2006-03-31 2007-03-29 appareil de commutation électrique doté d'au moins trois paires de contacts raccordées en série et s'ouvrant simultanément

Country Status (2)

Country Link
DE (1) DE102006016273A1 (fr)
WO (1) WO2007113197A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8658923B2 (en) 2008-04-01 2014-02-25 Ewac Holding B.V. Electrical rotary switch with closing elements at stationary contact locations inhibiting spark discharge and/or with a locking spring member

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8350168B2 (en) * 2010-06-30 2013-01-08 Schneider Electric USA, Inc. Quad break modular circuit breaker interrupter
US9129761B2 (en) 2012-12-20 2015-09-08 Eaton Electrical Ip Gmbh & Co. Kg Switching device suitable for direct current operation
CN110176367B (zh) * 2019-05-15 2021-06-22 深圳市泰永电气科技有限公司 双断点转换开关及其动触头模组
CN110137000B (zh) * 2019-05-15 2021-11-09 深圳市泰永电气科技有限公司 双断点转换开关

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2338637A1 (de) * 1973-07-30 1975-02-20 Bbc Brown Boveri & Cie Kontaktanordnung fuer elektrisches schaltgeraet
DE29709759U1 (de) * 1997-06-04 1998-10-08 Klöckner-Moeller GmbH, 53115 Bonn Schalteinheit
EP1085542A2 (fr) * 1999-09-15 2001-03-21 General Electric Company Commutateur électrique rotatif et contact pour ce commutateur

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1002439B (de) * 1954-06-14 1957-02-14 Voigt & Haeffner Ag Kontaktanordnung, insbesondere fuer Leistungsschalter mit Vor- und Hauptkontakten
DE1126479B (de) * 1957-10-11 1962-03-29 Bbc Brown Boveri & Cie Kontaktbrueckentraeger fuer ein elektromagnetisches Schuetz
DE1440894A1 (de) * 1962-12-13 1969-03-20 Concordia Sprecher Schalt Elektrischer Schalter
AU763276B2 (en) * 2001-02-07 2003-07-17 Hitachi Limited Gas insulated switchgear
EP1376628A1 (fr) * 2002-06-28 2004-01-02 ETI Elektroelement d.d. Disjoncteur pour basse tension avec un double dispositif de contacts et arc électrique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2338637A1 (de) * 1973-07-30 1975-02-20 Bbc Brown Boveri & Cie Kontaktanordnung fuer elektrisches schaltgeraet
DE29709759U1 (de) * 1997-06-04 1998-10-08 Klöckner-Moeller GmbH, 53115 Bonn Schalteinheit
EP1085542A2 (fr) * 1999-09-15 2001-03-21 General Electric Company Commutateur électrique rotatif et contact pour ce commutateur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8658923B2 (en) 2008-04-01 2014-02-25 Ewac Holding B.V. Electrical rotary switch with closing elements at stationary contact locations inhibiting spark discharge and/or with a locking spring member
US9653232B2 (en) 2008-04-01 2017-05-16 Ewac Holding B.V. Electrical rotary switch with closing elements at stationary contact locations inhibiting spark discharge and/or with a locking spring member

Also Published As

Publication number Publication date
DE102006016273A1 (de) 2007-10-04

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