EP3146550A1 - Appareil de coupure électrique - Google Patents

Appareil de coupure électrique

Info

Publication number
EP3146550A1
EP3146550A1 EP15726040.7A EP15726040A EP3146550A1 EP 3146550 A1 EP3146550 A1 EP 3146550A1 EP 15726040 A EP15726040 A EP 15726040A EP 3146550 A1 EP3146550 A1 EP 3146550A1
Authority
EP
European Patent Office
Prior art keywords
switching device
fixed contact
extensions
movable contact
contact
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
EP15726040.7A
Other languages
German (de)
English (en)
Other versions
EP3146550B1 (fr
Inventor
Adolf Tetik
Gerhard Dobusch
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.)
Eaton Intelligent Power Ltd
Original Assignee
Eaton Industries Austria GmbH
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 Eaton Industries Austria GmbH filed Critical Eaton Industries Austria GmbH
Priority to PL15726040T priority Critical patent/PL3146550T3/pl
Publication of EP3146550A1 publication Critical patent/EP3146550A1/fr
Application granted granted Critical
Publication of EP3146550B1 publication Critical patent/EP3146550B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
    • 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
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact

Definitions

  • the invention relates to a switching device according to the preamble of claim 1.
  • the object of the invention is therefore to provide a switching device of the type mentioned, with which the mentioned disadvantages can be avoided, in which safely an emerging arc can be deleted even when switching off high currents, and which has a simple and space-saving design.
  • Switching device has no jump-off mechanism. This can be a
  • Switching device are formed, which has a simple and space-saving design, which can be easily implemented in the context of automated production.
  • Such a switching device does not require a quenching plate stack to delete a switching arc, whereby the structure clearly
  • Switchgear has the ability to safely shut off high currents, and this with significantly simplified arc quenching device, as well as reduced space requirements.
  • Fig. 1 shows a preferred embodiment of a subject switching device in axonometric view, and without upper housing shell;
  • Fig. 2 is an assembly of the switching device of FIG. 1, consisting of
  • FIG. 3 shows the assembly according to FIG. 2 in a second axonometric view
  • FIG. 4 shows the assembly of FIG. 2 in side elevation, as well as with closed
  • FIG. 5 shows the view according to FIG. 4 in a partially sectioned illustration
  • FIG. 6 shows the view according to FIG. 4 with opened switch contacts, as well as without a shift drum
  • FIG. 7 shows the view according to FIG. 5 with opened switch contacts
  • FIGS. 1 to 7 shows a contact arm according to FIGS. 1 to 7 in axonometric view
  • FIG. 10 shows the arc quenching device according to FIG. 9.
  • Fig. 1 shows a preferred embodiment of a switching device 1, wherein the switching device 1 has at least one fixed contact 2, which on a
  • Fixed contact carrier 3 is arranged, and a movable contact 4, which is arranged on a movable contact arm 5, wherein the movable contact 4 is provided for contacting the fixed contact 2, and wherein the switching device 1 comprises an arc quenching device 6, wherein the
  • Arc quenching device 6 laterally arranged on the fixed contact carrier 3 and / or molded, and an opening path 14 of the movable contact arm 5 at least partially flanking extensions 7 includes.
  • Switching device 1 has no jump-off mechanism. This can be a
  • Switching device 1 are formed, which has a simple and space-saving design, which also in the context of automated production easy can be implemented. Such a switching device 1 does not require a quenching plate stack for deleting a switching arc, whereby the structure clearly
  • a representational switching device 1 has the ability to safely switch off high currents, and this with significantly simplified arc quenching device 6, and reduced space requirements.
  • Figs. 2 to 10 show individual parts or assemblies of the preferred
  • the subject switching device 1 can be designed as any training of a switching device 1. It is preferably provided that the switching device 1 as
  • Circuit breaker especially as a residual current circuit breaker 13, is formed.
  • Fig. 1 shows the preferred embodiment of the relevant switching device 1 as
  • Residual current circuit breaker 13 wherein an upper housing shell is not shown to show the interior of the relevant switching device 1, which is arranged in the lower housing shell 23 shown. Shown is a four-pole version of a residual current circuit breaker 13, which has four corresponding switching paths, and the corresponding terminals 11, 12 for connection of the three phases and the neutral conductor of a three-phase network.
  • a summation current transformer 22 is arranged, through which connection cable 24 are guided, which are connected at one end to a first terminal 11 and at the other end in each case with a movable contact arm 5.
  • the switching device 1 in question also has a manual control element 21, as well as an electromechanical arrangement, in order to cause a separation or opening of the switching contacts 2, 4 when a specifiable electrical state occurs. It is at objective point not further discussed in the construction of a residual current circuit breaker 13, since the subject switching device 1 is preferably not limited to this training, and the general structure of a residual current circuit breaker 13 is known per se.
  • the subject invention is further based on a switching path described. As a switching path while an electrical path through the
  • Switching device 1 denotes, which in a state in which each mutually associated switching contacts 2, 4 are in electrically conductive contact, is electrically conductive.
  • the relevant switching contacts 2, 4 are formed in representational switching device 1 by a fixed contact 2, therefore a fixed within the housing of the switching device 1 switching contact, and a movable contact 4. It can also be several switching path
  • the switch contacts therefore, the fixed contact 2 and the movable contact 4 are each preferably formed comprising silver.
  • the electrical conductors passing through the switching device 1 are preferably formed comprising a copper alloy.
  • the fixed contact 2 is arranged on a fixed contact carrier 3, in particular welded on this.
  • the fixed contact carrier 3 is preferably formed as part of the second terminal 12, but also a separate training and connection with the second terminal 12 may be provided.
  • the movable contact 4 is arranged on a contact arm 5, which is mounted according to the illustrated preferred embodiment in a movable shift drum 10.
  • the movable contact arms 5 are also mounted on any existing additional contact sections, so that all switching sections are always switched during a switching operation.
  • the movable contact 4 is preferably welded to the movable contact arm 5.
  • the coming from the summation current transformer 22 flexible conductor 24 is preferably attached.
  • the switching device 1 has an arc quenching device 6.
  • Arc quenching device 6 comprises laterally formed on the fixed contact carrier 3 or arranged extensions 7. These extensions 7 flank an opening 14 of the movable contact arm 5 at least or only partially laterally.
  • the two extensions 7 are therefore on the fixed contact carrier 3 arranged and / or formed such that they laterally border or flank a room, through which space the movable contact arm 5 moves when it moves away from the fixed contact 2 in the course of a shutdown.
  • the objective arc quenching device 6 is preferably formed only by the extensions 7. In other words, the preferred one
  • Arc quenching device 6 no splitter stack on, and is therefore free of stacked quenching plates.
  • the fixed contact carrier 3 is angled in the opening direction 15 of the contact arm 5, whereby the extensions 7 can be easily arranged laterally of the opening path 14 of the movable contact arm 5 in numerous switchgear designs.
  • the extensions 7 are each connected to the fixed contact carrier 3. However, it is preferably provided that - in the opening direction 15 of the movable contact 4 - between the fixed contact 3 and a first edge 18 of each of the extensions 7, a gap 19 is arranged. Through this gap 19, an arc can be forced to a certain, predetermined path. It has proven to be advantageous that the first edge 18 of the projections 7 substantially in
  • Extension of a contact region of the fixed contact 3 with the movable contact 4 is arranged, whereby a particularly advantageous guidance of any arc can be achieved.
  • the extensions 7 are formed in this case according to the illustrated preferred embodiment in each case substantially perpendicular to the fixed contact carrier 3, and form a U-shaped region.
  • the projections 7 preferably have a height 16 which decreases away from the fixed contact 2.
  • the extensions 7 have a trapezoidal surface 17.
  • Figs. 9 and 10 show the preferred embodiment of the extensions 7 as described above.
  • the extensions 7 are part of a separate arc extinguishing part 20, which according to the subject preferred embodiment of the
  • Fixed contact carrier 3 is a separate part, which is preferably connected to this by a rivet, as shown in FIGS. 5, 7 and 9, wherein the rivet in question may be formed integrally with the fixed contact carrier 3. Due to the separate design of the arc extinguishing part 20, this can be made of a different material than the fixed contact carrier 3, such as a ferrous material. It can also be provided to form the extensions 7 in one piece on the fixed contact carrier 3.
  • the contact arm 5 preferably has a via the movable contact 4th
  • This end region 8 is preferably formed integrally with the remaining movable contact arm 5, and preferably forms, and as can be seen in FIGS. 5 and 7, a stop for the movable contact 4th
  • the projections 7 therefore according to the preferred embodiment, as shown in particular in FIGS. 4 and 5, not up to the contacts 2, 4, but only flank the end portion. 8 .
  • Arc creates a plasma, causing a local overpressure. This can be exploited to additionally direct the arc or
  • the end region 8 of the contact arm 5 has a, from the movable contact 4 away decreasing thickness, or that the end portion 8 of the contact arm 5 is bent in the direction of movement of the contact arm 5 and / or angled.
  • the thickness is measured relative to the thicknesses of the movable contact arm 5 in the region of the movable contact 4, wherein the reference height is the rear surface of the movable contact arm 5 in the region of the movable contact 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)

Abstract

L'invention concerne un appareil de coupure électrique (1), en particulier un disjoncteur de protection contre les courants de défaut (13), qui comporte au moins un contact fixe (2) disposé sur un support de contact fixe (3) ainsi qu'un contact mobile (4) disposé sur un bras de contact mobile (5). Le contact mobile (4) sert à établir une connexion électrique avec le contact fixe (2) et l'appareil de coupure électrique (1) comporte un système d'extinction d'arc (6). Selon l'invention, ce système d'extinction d'arc (6) est disposé latéralement sur le support de contact fixe (3) et il comprend des prolongements (7) qui encadrent au moins par endroits la course d'ouverture (14) du bras de contact mobile (5).
EP15726040.7A 2014-05-20 2015-05-19 Appareil de coupure électrique Active EP3146550B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15726040T PL3146550T3 (pl) 2014-05-20 2015-05-19 Łącznik

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014107070.4A DE102014107070A1 (de) 2014-05-20 2014-05-20 Schaltgerät
PCT/EP2015/060981 WO2015177137A1 (fr) 2014-05-20 2015-05-19 Appareil de coupure électrique

Publications (2)

Publication Number Publication Date
EP3146550A1 true EP3146550A1 (fr) 2017-03-29
EP3146550B1 EP3146550B1 (fr) 2020-07-01

Family

ID=53276088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15726040.7A Active EP3146550B1 (fr) 2014-05-20 2015-05-19 Appareil de coupure électrique

Country Status (4)

Country Link
EP (1) EP3146550B1 (fr)
DE (1) DE102014107070A1 (fr)
PL (1) PL3146550T3 (fr)
WO (1) WO2015177137A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN220553376U (zh) * 2023-07-19 2024-03-01 施耐德电气工业公司 用于接触器的灭弧系统和接触器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2632074A (en) * 1950-06-29 1953-03-17 Allis Chalmers Mfg Co Arc chute utilizing interleaved u-shaped conductive members
US4266210A (en) * 1979-09-10 1981-05-05 Westinghouse Electric Corp. Circuit breaker with improved arc extinguishing means
JPS58131629A (ja) * 1982-01-31 1983-08-05 松下電工株式会社 消弧装置
FR2714520B1 (fr) * 1993-12-24 1996-01-19 Telemecanique Appareil électrique interrupteur à contacts séparables.
JP3414131B2 (ja) * 1996-02-26 2003-06-09 松下電工株式会社 消弧装置
JP5288083B1 (ja) * 2012-11-12 2013-09-11 三菱電機株式会社 開閉器

Also Published As

Publication number Publication date
PL3146550T3 (pl) 2020-11-30
DE102014107070A1 (de) 2015-11-26
WO2015177137A1 (fr) 2015-11-26
EP3146550B1 (fr) 2020-07-01

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