EP1554739A1 - Disjoncteur basse tension - Google Patents

Disjoncteur basse tension

Info

Publication number
EP1554739A1
EP1554739A1 EP03753268A EP03753268A EP1554739A1 EP 1554739 A1 EP1554739 A1 EP 1554739A1 EP 03753268 A EP03753268 A EP 03753268A EP 03753268 A EP03753268 A EP 03753268A EP 1554739 A1 EP1554739 A1 EP 1554739A1
Authority
EP
European Patent Office
Prior art keywords
arc
voltage circuit
circuit breaker
low
breaker according
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
Application number
EP03753268A
Other languages
German (de)
English (en)
Other versions
EP1554739B1 (fr
Inventor
Sezai TÜRKMEN
Jörg-Uwe DAHL
Detlev Schmidt
Günter Seidler
Hans-Joachim Kuhrt
Ingo Thiede
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 EP1554739A1 publication Critical patent/EP1554739A1/fr
Application granted granted Critical
Publication of EP1554739B1 publication Critical patent/EP1554739B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
    • 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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate

Definitions

  • the invention relates to a low-voltage circuit breaker with a main current contact arrangement and an arc quenching chamber, an arc transfer element being arranged between the main current contact arrangement and the arc quenching chamber.
  • the invention is therefore based on the object of providing a low-voltage circuit breaker of the generic type, in which arcs can be converted into an arc-quenching chamber in a simple manner in a defined manner.
  • an arc transfer element between the main current contact arrangement and the arc-quenching chamber comprises at least one arc-guiding element, by means of which the arc can be guided into the arc-quenching chamber in a defined manner, advantageously leads the arc cleanly away from the main current contacts to be protected against erosion and one To shorten the arc extinguishing time. This leads to a reduction in the stress both on the one hand of the main current contacts and on the other hand of the arc quenching chamber, since this can now implement its arc quenching capacity with great efficiency by essentially defined starting by the arc.
  • the provision of simple arc guiding elements on the arc transfer element makes it possible to guide the arcs in a defined manner. Changes to the main current contact arrangement itself need not be made, so that the modifications according to the invention are limited solely to the arc transfer element.
  • the solution according to the invention is very simple and therefore inexpensive to implement even in low-voltage circuit breakers manufactured in series.
  • the at least one arc guiding element extends at an angle to an imaginary vertical of the arc transfer element away from an edge region in the direction of a central region. It is hereby advantageously achieved that the arc is guided through the at least one arc guiding element approximately centrally into the arc quenching chamber, so that the desired arc quenching effect is achieved with great certainty.
  • the arc guiding element has at least one running edge which runs essentially parallel to the arc transfer element. In this way, an optimal arc position within the arc quenching chamber can be controlled in a defined manner.
  • the running edge can be formed by a sharp-edged transition of a step.
  • the arc guiding element has a plurality of running edges, in particular running at different angles to the imaginary perpendicular. - By such a radial arrangement of the running edges on the arc transfer element, a safe guiding of the arc into the central region of the arc quenching chamber is ensured regardless of the location of the arc.
  • the arc guiding element is non-positively connected to the arc transfer element.
  • This enables the arc guiding element to be designed by simple measures. All that is required for this is a simple construction of the arc guide element - for example as a crown-shaped stamped part - and the attachment of this arc guide element to the arc transfer element - for example by welding. So with an appropriately chosen arrangement jagged rays of the crown-shaped stamped part, the running edges for the arc are set in a simple manner. In particular, adaptations to different arc quenching chamber sizes are possible in a simple manner.
  • the beams preferably have two running edges for the arc running at an angle to one another, which run from the edge region of the arc transfer element into the center of the arc quenching chamber. Depending on the location and intensity of the arc, this allows the arc to be guided in an adapted manner into the arc quenching chamber.
  • the non-positively connected arc guide element also has the advantage that an enlarged heat sink is available in the region of the arc transfer element, which has a favorable influence on the quenching behavior of the arc quenching chamber.
  • At least a section of a wire in particular a steel wire, can also serve as the arc guiding element.
  • the at least one arc guiding element is designed as a profile part which is embossed out of the plane of the arc transfer element. This also makes it possible in a simple manner to produce an arc transfer element having arc guide elements.
  • At least one end plate of a quenching plate package can advantageously serve as the arc transfer element.
  • FIG. 2 shows a plan view of an arc transfer element
  • Figure 3 is a sectional view through the arc transfer element
  • FIG. 4 shows an enlarged detail of the arc transfer element
  • Figure 5 is a schematic perspective view of an arc transfer element.
  • FIG. 1 shows a partial sectional view of an arc quenching chamber 10 of a low-voltage circuit breaker 12.
  • the low-voltage circuit breaker 12 is designed for a relatively high nominal current, for example 1000 A.
  • a main current contact arrangement 14 of the low-voltage circuit breaker 12 comprises a fixed main contact 16 with a switching piece support 18 and a movable main contact 20 with a switching piece support 22. These main contacts 16 and 20 are present several times in parallel in case of need. The larger the nominal current, the wider - as shown in the paper plane - the main current contact arrangement is formed.
  • the main contacts 16 and 20 are used to conduct the continuous current of the low-voltage circuit breaker 12 without arcing when the main contacts 16 and 20 are closed.
  • the main current contact arrangement 14 further comprises a fixed burn-off contact 24 with a contact piece support 26 and a movable burn-off contact 28 with a contact piece support 30.
  • the arcing horns 32 and 34 are assigned to the burn-off contacts 24 and 28.
  • An isolating coupling 36 is used to connect to a drive device and reset device (not shown) for opening and closing the main current contact arrangement 14.
  • the arc quenching chamber 10 comprises a housing 38 which encloses an interior 40 which serves to quench the arc.
  • a stack of quenching plates 41 consisting of quenching plates 42, 43 is arranged in a known manner.
  • the interior 40 is delimited on its fixed-contact side by an arc transfer element 44.
  • the arc transfer element 44 is essentially plate-shaped and has an arc guide element 46 on its side facing the interior 40, the structure of which is explained in more detail with reference to the following figures.
  • the arc gases (switching gases) formed in the course of the quenching process leave the arc quenching chamber 10 through an outlet opening 50 provided on the top and divided by webs 48 in the direction of the arrows 52.
  • a switching gas damper can additionally be provided on the top of the arc quenching chamber 10 be arranged.
  • the arc guide element 46 is arranged in the region of the arc transfer points from the arc horn 32 on the arc guide element 44.
  • FIG. 2 shows the arc guide element 44 in a top view, the arrangement of the arc guide element 46 on the arc guide element 44 being clear.
  • the arc guiding element 46 is non-positively arranged as an additional part on the arc guiding element 44, for example by spot welding or the like.
  • the arc guiding element can 46 be stamped out of the plane of the arc guide element 44.
  • the arc-guiding element 46 comprises running edges 54 which form the lateral boundary of radiating prongs 56.
  • the running edges 54 each run at different angles to an imaginary vertical 58 through the arc guide element 44.
  • the running edges 54 are oriented such that they run from a lower edge region in the direction of an upper middle region of the arc guide element 44.
  • the running edges 46 are substantially perpendicular to the plane of the arc.
  • FIG. 5 again illustrates in a perspective view the plastic protrusion of the arc guiding element 46 over the arc guiding element 44. This leads to the formation of the running edges 54 in the form of the sharp-edged transitions 62 of the steps 60.
  • the number of arc guiding elements 46 and the number of running edges 54 can be adapted to the structural design of the low-voltage circuit breaker 12, in particular to the arc quenching chamber 10.
  • Each of the two end plates 43 of the quenching plate stack 41 can also be used as the arc transfer element and can be provided with an arc guiding element.
  • the running edges 54 are formed by welded-on individual elements, for example steel wire or the like.
  • the arrangement of a relatively large-area additional part, which forms a plurality of the running edges 54, at the same time leads to the formation of an additional mass which has a cooling effect on the arc at a very early point in time during the switching-off process of the low-voltage circuit breaker 12, so that an additional one Improvement of the extinguishing behavior is achieved.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

La présente invention concerne un disjoncteur basse tension qui comprend un système de contact de courant principal et une chambre d'extinction d'arc. Un élément de transfert d'arc se trouve entre le système de contact de courant principal et la chambre d'extinction d'arc. Selon cette invention, ledit élément de transfert d'arc (44) comprend au moins un élément conducteur d'arc (46) qui permet de guider l'arc de manière définie dans la chambre d'extinction d'arc (10).
EP03753268A 2002-10-25 2003-08-28 Disjoncteur basse tension Expired - Fee Related EP1554739B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10250950 2002-10-25
DE10250950A DE10250950B4 (de) 2002-10-25 2002-10-25 Niederspannungs-Leistungsschalter
PCT/DE2003/002883 WO2004040608A1 (fr) 2002-10-25 2003-08-28 Disjoncteur basse tension

Publications (2)

Publication Number Publication Date
EP1554739A1 true EP1554739A1 (fr) 2005-07-20
EP1554739B1 EP1554739B1 (fr) 2006-07-26

Family

ID=32103242

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03753268A Expired - Fee Related EP1554739B1 (fr) 2002-10-25 2003-08-28 Disjoncteur basse tension

Country Status (6)

Country Link
US (1) US7064640B2 (fr)
EP (1) EP1554739B1 (fr)
CN (1) CN1331173C (fr)
DE (2) DE10250950B4 (fr)
HK (1) HK1079614A1 (fr)
WO (1) WO2004040608A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005047741B4 (de) 2005-09-29 2013-02-14 Siemens Aktiengesellschaft Elektrischer Schalter
DE102007058216A1 (de) 2007-11-30 2009-06-04 Siemens Ag Lichtbogen-Löscheinrichtung für einen elektrischen Schalter
CN113690111A (zh) * 2021-07-14 2021-11-23 上海立新电器控制设备有限公司 一种用于断路器的弧夹角灭弧结构

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3539673A1 (de) * 1985-11-06 1987-05-07 Siemens Ag Kontaktanordnung fuer niederspannungs-leistungsschalter mit hauptkontakten und abbrennkontakten
KR900007273B1 (ko) 1986-09-16 1990-10-06 미쓰비시전기 주식회사 회로 차단기
DE9206136U1 (de) * 1992-05-07 1993-09-09 Siemens AG, 80333 München Elektrisches Schaltgerät mit Lichtbogenleitteilen
FR2803687B1 (fr) * 2000-01-07 2002-02-22 Schneider Electric Ind Sa Pole pour disjoncteur electrique, muni d'une chambre d'extinction d'arc large
DE10048328C2 (de) * 2000-09-28 2003-01-23 Aeg Niederspannungstech Gmbh Lichtbogen-Löscheinrichtung
US6417474B1 (en) * 2001-05-15 2002-07-09 Eaton Corporation Electrical switching apparatus having an arc runner with an elongated raised ridge

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004040608A1 *

Also Published As

Publication number Publication date
US7064640B2 (en) 2006-06-20
HK1079614A1 (en) 2006-04-07
EP1554739B1 (fr) 2006-07-26
CN1689125A (zh) 2005-10-26
US20060044091A1 (en) 2006-03-02
CN1331173C (zh) 2007-08-08
DE50304387D1 (de) 2006-09-07
DE10250950A1 (de) 2004-05-13
WO2004040608A1 (fr) 2004-05-13
DE10250950B4 (de) 2004-10-28

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