EP0963622A2 - Element de fixation de couvercle de chambre d'extinction d'arc electrique pour sectionneurs de puissance basse tension - Google Patents

Element de fixation de couvercle de chambre d'extinction d'arc electrique pour sectionneurs de puissance basse tension

Info

Publication number
EP0963622A2
EP0963622A2 EP98919042A EP98919042A EP0963622A2 EP 0963622 A2 EP0963622 A2 EP 0963622A2 EP 98919042 A EP98919042 A EP 98919042A EP 98919042 A EP98919042 A EP 98919042A EP 0963622 A2 EP0963622 A2 EP 0963622A2
Authority
EP
European Patent Office
Prior art keywords
chamber
recesses
quenching
housing
elements
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.)
Withdrawn
Application number
EP98919042A
Other languages
German (de)
English (en)
Inventor
Sezai TÜRKMEN
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 EP0963622A2 publication Critical patent/EP0963622A2/fr
Withdrawn legal-status Critical Current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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/36—Metal parts
    • 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
    • H01H2009/347—Stationary parts for restricting or subdividing the arc, e.g. barrier plate using lids for closing the arc chamber after assembly

Definitions

  • the invention relates to chamber covers for arc quenching chambers for low-voltage circuit breakers that switch in air, in particular the reduction in the connecting elements required for their attachment to the arc quenching chambers.
  • Low-voltage circuit breakers that switch in air require an arc quenching chamber to operate, in order to extinguish occurring arcs without impairing the circuit breaker itself and adjacent system components or other assemblies, because otherwise there is a risk that the hot and thus ionized arc gases will cause electric shock or cause other damage.
  • Arc quenching chambers are especially large
  • Circuit breakers can only be manufactured as separate units. When they are connected to the main body of the circuit breaker and the connection of their individual parts to one another, the task is to seal the technically required gaps and joints against the passage of ionized arc gases and to prevent electrical flashovers caused by gases that may still escape. In this respect, special attention must also be paid to the connection of the extinguishing chamber cover to the extinguishing chamber housing.
  • an arc quenching chamber is shown which is removably arranged on an air circuit breaker. For this purpose, the arcing chamber is inserted into a groove on the side of the fixed contact by means of a hook-like extension and on the
  • the fire chamber cover is attached to the fire chamber housing with four screws.
  • the hook-like extension serves to fasten the entire quenching chamber and, above all, to seal it against escaping ionized arc gases.
  • EP patent application 0 225 207 describes an arc quenching chamber in which the arc quenching plates are held between two side walls provided with ribs and grooves, which have molded-on half covers of the quenching chamber with an insulating holder.
  • the Cover halves fastened with the help of screws to a bracket, which in turn serves for fastening to the switch housing, which is done with the aid of fastening screws.
  • a large number of fastening elements are required to fasten the quenching chamber to the switch, namely four screws per switch pole including washers for fastening the cover halves to the two fastening brackets, these two fastening brackets themselves and two screws with nuts for fixing the mounting bracket to the switch housing.
  • the arcing chamber covers are attached to the arcing chamber housing with four screws.
  • the quenching chamber cover covers a hollow extension of the quenching chamber housing, in which a single fastening screw is captively accommodated, with which the complete arc quenching chamber is fastened to the circuit breaker. There is an insertion opening for one in the fire chamber cover
  • Screwdriver arranged.
  • the number of fastening elements required for fastening the arcing chamber cover to the arcing chamber and for fastening the arcing chamber to the housing of the switch is relatively large.
  • the arcing chamber housing has a hollow extension on the side on which it can be fastened to the circuit breaker, in which there is a bore for receiving a fastening screw, and on which across from- lying, front side of the arcing chamber, at the top of the
  • Quenching chamber housing is arranged a horizontal nose-like projection, and the quenching chamber cover is provided with a claw-like extension for embracing the nose-like projection on the quenching chamber housing when the quenching chamber cover is placed on the quenching chamber housing.
  • Extinguishing chamber cover a stop hole is arranged such that the head of the fastening screw for horizontal locking of the extinguishing chamber cover forms a stop for the wall of this stop hole.
  • the object of the invention is to design the fastening of the cover of the arc quenching chamber in such a way that it can be assembled with simple means and a small number of connecting elements in such a way that the demands on the connection, in particular especially the seal against the passage of ionized
  • the quenching chamber according to the invention has end plates with upper resilient latching elements and lower resilient latching elements which are advantageously produced by punching the plate and are made in one piece from the material of the plate. These locking elements are arranged so that they are directed towards each other, that is, the upper locking elements point downwards and the lower locking elements point upwards. The upper locking elements are spread inwards, in the direction of the quenching plates and the bottom locking elements outwards, in the direction of the housing of the quenching chamber. Recesses are provided in the housing of the quenching chamber in such a position that the lower locking elements of the end plate, when fully inserted into the quenching chamber, snap into these recesses and are supported on the upper sides of the recesses.
  • Recesses are also provided in the quenching chamber cover in such a position that the upper latching elements of the end plate snap into these recesses when the quench chamber cover is fully inserted into the quenching chamber and are supported on the lower sides of the recesses.
  • End plates are taken up by grooves in the housing of the quenching chamber.
  • the quenching plates are inserted into the quenching chamber so far that the lower locking elements in the
  • suitable projections can also be provided at the same place, on which the lower latching elements are supported.
  • bores can expediently be provided in the quenching chamber cover, which extend from its top to the recesses, such that the upper latching elements are pressed back into the plane of the end plate by means of a suitable tool and are thus brought out of engagement with the recess in the quenching chamber cover if the extinguishing chamber cover is to be removed.
  • Fig.l shows schematically an end plate according to the invention in a perspective view.
  • FIG. 2 shows schematically the arrangement of the quenching plate according to the invention in the quenching chamber in a sectional view of part of the quenching chamber.
  • FIG 3 shows a possible variant of the support of the quenching plate according to the invention in the quenching chamber.
  • the end plate 1 shown in FIG. 1 has upper resilient latching elements 2 and lower resilient latching elements 3 which are produced by stamping the plate and are made in one piece from the material of the plate. These locking elements 2 and 3 are arranged so that they are directed towards each other, that is, the upper locking elements 2 point downwards and the lower locking elements 3 point upwards. The upper locking elements 2 are spread inwards, in the direction of the quenching plates and the bottom locking elements 3 outwards, in the direction of the housing 4 of the quenching chamber.
  • Recesses 5 are provided in the housing 4 of the extinguishing chamber in such a position that the lower latching elements 3 of the end plate 1 snap into these recesses 5 when fully inserted into the extinguishing chamber and are supported on the upper sides 6 of the recesses 5.
  • Recesses 8 are also provided in the quench chamber cover 7 in a position such that the upper locking elements 2 of the end plate 1 in the When the extinguishing chamber cover 7 is fully inserted into the extinguishing chamber, snap it into these recesses 8 and support it on the lower sides 9 of the recesses 8.
  • the end plates 1 When assembling the quenching chamber, the end plates 1 are inserted into the quenching chamber, the angled edges 10 of the end plates 1 being received by grooves 11 in the housing 4 of the quenching chamber.
  • the quenching plates 1 are inserted so far into the quenching chamber that the lower locking elements 3 snap into the recess 5 in the housing 4 of the quenching chamber.
  • the extinguishing chamber cover 7 is pressed from above into the housing 4 of the extinguishing chamber provided with the end plates 1 until the upper latching elements 2 of the end plates 1 snap into the recesses 8 of the extinguishing chamber cover 7.
  • 7 holes 14 can be provided in the extinguishing chamber cover expediently, which extend from its top 15 into the recesses 8, such that through this
  • Latching elements 2 can be pushed back into the plane of the end plate 1 and can thus be brought out of engagement with the recess 8 in the quenching chamber cover 7 if the quenching chamber cover 7 is to be removed.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

L'invention concerne un élément de fixation de couvercle de chambre d'extinction d'arc électrique pour des sectionneurs de puissance basse tension à rupture dans l'air, notamment pour réduire le nombre d'éléments de liaison nécessaires à sa fixation sur la dite chambre. La plaque terminale (1) comporte des éléments d'encliquetage élastiques supérieurs et inférieurs (2, 3) ne formant qu'une seule pièce avec la plaque et constitués du même matériau que la plaque. Ces éléments d'encliquetage sont orientés à l'opposé les uns des autres. Les éléments d'encliquetage supérieurs (2) sont étirés vers l'intérieur en direction des plaques d'extinction et les éléments d'encliquetage inférieurs (3) sont étirés vers l'extérieur en direction du carter (4) de la chambre d'extinction. Des évidements sont ménagés dans cette dernière. Les éléments d'encliquetage inférieurs (3) de la plaque terminale (1) s'engagent dans lesdits évidements lorsqu'ils sont totalement insérés dans la chambre d'extinction, et ils prennent appui sur les côtés supérieurs (6) des évidements (5). Des évidements (8) sont également ménagés dans le couvercle de chambre d'extinction (7). Les éléments d'encliquetage supérieurs (2) de la plaque terminale (1) s'engagent dans ces évidements lorsque le couvercle (7) est totalement inséré dans la chambre d'extinction, et ils prennent appui sur les côtés inférieurs (9) des évidements (8). Une liaison de force parfaite entre le carter (4) de la chambre d'extinction et le couvercle (7) de cette dernière est réalisée par l'intermédiaire du matériau de la plaque terminale (1). Aucun élément de fixation supplémentaire tel qu'une vis ou un élément similaire n'est nécessaire pour fixer le couvercle de la chambre d'extinction.
EP98919042A 1997-02-28 1998-02-27 Element de fixation de couvercle de chambre d'extinction d'arc electrique pour sectionneurs de puissance basse tension Withdrawn EP0963622A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19709843 1997-02-28
DE1997109843 DE19709843A1 (de) 1997-02-28 1997-02-28 Kammerdeckelbefestigung für Lichtbogenlöschkammern für Niederspannungs-Leistungsschalter
PCT/DE1998/000664 WO1998038712A2 (fr) 1997-02-28 1998-02-27 Element de fixation de couvercle de chambre d'extinction d'arc electrique pour sectionneurs de puissance basse tension

Publications (1)

Publication Number Publication Date
EP0963622A2 true EP0963622A2 (fr) 1999-12-15

Family

ID=7822879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98919042A Withdrawn EP0963622A2 (fr) 1997-02-28 1998-02-27 Element de fixation de couvercle de chambre d'extinction d'arc electrique pour sectionneurs de puissance basse tension

Country Status (3)

Country Link
EP (1) EP0963622A2 (fr)
DE (1) DE19709843A1 (fr)
WO (1) WO1998038712A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107919620A (zh) * 2017-12-04 2018-04-17 江苏海事职业技术学院 一种防飞弧配电箱

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10049726A1 (de) 2000-09-29 2002-04-11 Siemens Ag Kammerdeckelbefestigung für Lichtbogenlöschkammern für Niederspannungsschaltgeräte

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706868A (en) * 1971-10-18 1972-12-19 Square D Co Arc chute
US4684772A (en) * 1985-04-09 1987-08-04 Square D Company Mounting apparatus for arc quenching plates for electric contacts
DE4109717C1 (fr) * 1991-03-25 1992-09-03 Kloeckner-Moeller Gmbh, 5300 Bonn, De

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9838712A3 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107919620A (zh) * 2017-12-04 2018-04-17 江苏海事职业技术学院 一种防飞弧配电箱
CN107919620B (zh) * 2017-12-04 2019-05-03 江苏海事职业技术学院 一种防飞弧配电箱

Also Published As

Publication number Publication date
WO1998038712A2 (fr) 1998-09-03
DE19709843A1 (de) 1998-09-03
WO1998038712A3 (fr) 1998-12-10

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