EP3221876B1 - Dispositif de commutation - Google Patents

Dispositif de commutation Download PDF

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Publication number
EP3221876B1
EP3221876B1 EP15790490.5A EP15790490A EP3221876B1 EP 3221876 B1 EP3221876 B1 EP 3221876B1 EP 15790490 A EP15790490 A EP 15790490A EP 3221876 B1 EP3221876 B1 EP 3221876B1
Authority
EP
European Patent Office
Prior art keywords
switching device
switching
arc extinguishing
leg
apertures
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.)
Not-in-force
Application number
EP15790490.5A
Other languages
German (de)
English (en)
Other versions
EP3221876A1 (fr
Inventor
Johann Koppensteiner
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 Intelligent Power Ltd
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 Intelligent Power Ltd filed Critical Eaton Intelligent Power Ltd
Publication of EP3221876A1 publication Critical patent/EP3221876A1/fr
Application granted granted Critical
Publication of EP3221876B1 publication Critical patent/EP3221876B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/346—Details concerning the arc formation chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/12—Means for indicating condition of the switch
    • 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
    • H01H9/362—Mounting of plates in arc chamber

Definitions

  • the invention relates to a switching device according to the preamble of claim 1.
  • an electrical switching device such as a three-phase contactor, known with a uniform housing structure.
  • the housing is made of a thermoplastic material that is cast in one piece. The thermoplastic can be partially protected by shields within the phase sections, such as arc quenching assemblies in the form of splitter plate assemblies, from plasma and arcs.
  • a splitter assembly comprises a plurality of splitter plates arranged vertically in parallel, which are supported by lateral plate holders. Splitter plate assemblies are arranged in pairs for each phase contact device, and each shunt plate is provided above each pair of assemblies, which serve to complete temporary current paths in opening and closing the respective phase contact device.
  • the object of the invention is to provide a switching device with an arc extinguishing arrangement, which allows a review of occurring in the arc extinguishing device, in particular when switching high-power DC currents effects.
  • a DC switching device which has a high switching capacity at direct currents, and which is therefore suitable for switching direct currents of high power.
  • an alternating current switching device can be developed as well.
  • this can also be a switching device to be created, which has a respect to the mass fraction significantly reduced cost of transformer plate for the yoke of the arc quenching device. It has been shown in test series and simulations that the magnetic effect of the yoke is not adversely affected by the openings. As a result, a switching device can be created which requires less resources. As a result, in addition, the mass of the switching device can be reduced, whereby the energy consumption for its transport can be reduced.
  • the Fig. 1 shows a switching device 1 with at least one electrical input 2 and at least one electrical output 3, and at least a first switching contact 4, a second switching contact 5 and a movable switching bridge 11, wherein a current path from the input 2 to the output 3 is electrically conductive when the first switching contact 4 and the second switching contact 5 are conductively connected by means of the switching bridge 11, wherein the switching device 1 further a Arc extinguishing arrangement 6 having at least one arc extinguishing chamber 7, wherein outside of the at least one arc extinguishing chamber 7 partially U-shaped yoke 8 is arranged, wherein at least a first leg 9 of the U-shaped yoke 8 has a predetermined plurality of openings 10.
  • a switching device 1 As a result, the effects actually occurring during switch-off processes in an arc extinguishing arrangement 6 can be visually checked.
  • a DC switching device By using such a switching device 1 as a research and development tool, in particular, a DC switching device can be provided, which has a high switching capacity at direct currents, and which is therefore suitable for switching direct currents of high power.
  • an alternating current switching device can be developed as well.
  • this can also be a switching device 1 are created, which has a respect to the mass fraction significantly reduced cost of transformer plate for the yoke 8 of the arc quenching device 6. It has been shown in test series and simulations that the magnetic effect of the yoke 8 is not adversely affected by the openings 10. As a result, a switching device 1 can be created, which requires less resources. As a result, in addition, the mass of the switching device 1 can be reduced, whereby the energy consumption for its transport can be reduced.
  • the subject invention relates to switching devices 1, which are provided in particular for the switching of direct currents and specially designed.
  • the invention relates to DC switching devices, which are intended and designed for the intended switching high voltages in the range of several hundred volts, about 600V operating voltage, as well as currents in the two-digit ampere range. With such currents, special requirements are placed on the arc quenching device 6, since arcs are difficult to extinguish in DC due to the lack of zero crossing.
  • the invention will be described with reference to a preferred embodiment of a switching device 1 as a DC switching device with a single switching path closer. However, it is also possible to provide designs with several parallel switching paths.
  • An objective switching device 1 has an electrical input 2 and an electrical output 3, which are preferably designed as screw terminals, as well as in Fig. 1 shown. Furthermore, the switching device 1 on a Isolierstoffgeophuse.
  • the switching device 1 has a single switching path, wherein according to the illustrated preferred embodiment, a double interruption of this single switching path is provided. However, it can also be provided a simple interruption of the switching path, the invention being described without a mandatory restriction to a double interruption on the basis of the preferred embodiment.
  • the first and the second switching contact 4, 5 are fixed to the housing, and can be electrically connected by a movable switching bridge 11, whereby an electrically conductive current path from the input 2 to the output 3 is formed. It is provided that the position of the switching bridge 11 by the shift lever 19 is manually controlled. It is preferably provided that the shift lever 19 acts on the switching bridge 11 via a snap-action mechanism in order to achieve a sudden opening and closing of the switching path. It may also be provided to carry out the representational switching device 1 as a so-called. Self-switch, which has one or more triggers 16, such as an overcurrent release and / or a short-circuit release. Furthermore, it is preferably provided that the switching device 1 has a switching mechanism 17, in particular in execution of the same as a self-switch.
  • the switching bridge 11 While two , As having electrical contacts formed areas to contact with the first switching contact 4 and the second switching contact 5, this is referred to in the diction of the subject application only as a switching bridge 11. It can also be provided that also the first switching contact 4 and the second switching contact 5 are designed as movable electrical contacts.
  • the switching device 1 further comprises an arc extinguishing arrangement 6 in order to extinguish arcs which occur in the course of a switching operation. This is to prevent that due to so-called “stationary” arcs continue to flow through the switching device 1 and also due to the thermal effect of the arcs damage to the switching device 1 takes place. Such arcs occur in particular during a switch-off.
  • Switching off here refers to the separation of the switching bridge 11 of the first and second electrical switching contact 4, 5 for preventing a current flow through the switching device 1. The physical relationships in the ignition of an arc are described in the law of induction.
  • Fig. 2 shows a preferred embodiment of the arc extinguishing arrangement 6.
  • the first switching contact 4 and the second switching contact 5 are shown, but these are shown without any further contacting, only to illustrate their arrangement relative to the respective arc extinguishing chambers 7, 15.
  • the arc extinguishing arrangement 6 has at least one arc extinguishing chamber 7, which may also be referred to as the first arc extinguishing chamber 7.
  • the arc extinguishing arrangement 6 further comprises a second arc quenching chamber 15. It is preferably provided that the first arc quenching chamber 7 is assigned to the first switching contact 4, and that the second arc quenching chamber 15 is assigned to the second switching contact 5.
  • the term "assigned" refers in this context to an arrangement of the relevant arc quenching chamber 7, 15 with respect to the indicated switching contact 4, 5 in such a way that an emerging at the switching contact 4, 5 arc its way into or to the relevant arc quenching chamber 7, 15th finds or should find.
  • Fig. 2 shows the two switching contacts 4, 5 in the region of the respective arc quenching chamber 7, 15th
  • first arc quenching chamber 7 and the second arc quenching chamber 15 are arranged parallel to each other, as in FIG Fig. 2 and 3 shown.
  • first arc quenching chamber 7 and the second arc quenching chamber 15 are each a plurality of quenching plates 13 spaced from each other.
  • the quenching plates 13 are arranged in a conventional manner in a plastic wall 12 of the first arc quenching chamber 7 and the second arc quenching chamber 15.
  • the quenching plates 13 are preferably held with small projections in corresponding, not shown, recesses of the plastic wall 12.
  • the switching device 1 has a U-shaped yoke 8, which is partially arranged outside the at least one arc extinguishing chamber 7. As in Fig. 2 In the preferred embodiment, with two arc extinguishing chambers 7, 15, the yoke encloses both arc extinguishing chambers 7, 15. The yoke 8 serves to predeterminable influencing of the magnetic properties in the area of the arc extinguishing arrangement 6.
  • the U-shaped yoke 8 in this case has a first leg 9 and a second leg 14, and one, the two legs 9, 14 connecting web 18, and is preferably made of so-called. Transformer sheet or electrical steel or other suitable soft magnetic material.
  • At least one first leg 9 of the U-shaped yoke 8 has a predeterminable plurality of predeterminable apertures 10. This makes it possible to visually track an arc.
  • the corresponding apertures 10 are therefore provided or arranged in particular to allow a view of the interior of the arc extinguishing arrangement 6, for example in the course of the new development of an arc extinguishing arrangement 6.
  • the arc extinguishing chamber 7, 15 delimiting plastic wall 12 is formed at least in the region of the first leg 9 of the U-shaped yoke 8 at least translucent.
  • the insulating housing of the relevant switching device 1 has at least one correspondingly translucent area.
  • the plastic wall 12 as well as the insulating material of a substantially transparent or translucent plastic formed. As in Fig. 2 can be seen, the plastic wall 12 between the yoke 8 and the quenching plates 13 is arranged.
  • the perforations 10 may have any shape, and in particular with regard to their shape and their arrangement on the at least one leg 9, 14 adapted to an expected course of an arc, or to certain magnetic properties.
  • the openings 10 are substantially round, in particular circular, or angular, in particular hexagonal, are formed. This allows both a dense packing and a simple production of the openings 10th Fig. 3 shows a U-shaped yoke 8 with circular openings 10, wherein, of course, at the edge regions no completely round apertures 10 are arranged.
  • the openings 10 are arranged in the form of a substantially regular pattern in the first and / or second leg 9, 14 of the U-shaped yoke 8, as for example in FIG Fig. 3 is shown.
  • the apertures 10 are arranged in such a way in the first and / or second leg 9, 14, that a substantially homogeneous flux density between the legs 9, 14 is achieved. This is approximately in the training according to the subject Fig. 1 to 3 given.
  • the openings 10 occupy a large area of the legs 9, 14. It is therefore preferably provided that the apertures 10 are formed such that a sum of all openings 10 of the first and / or second leg 9, 14 of the U-shaped yoke 8 is greater than 50% of the area of the first and second leg 9, 14 is.
  • the two legs 9, 14 are formed substantially the same. This results in magnetic properties that are the same on both sides of the yoke 8, and allows a view of both sides of the arc extinguishing assembly 6.

Claims (8)

  1. Dispositif de commutation (1), en particulier dispositif de commutation à courant continu, avec au moins une entrée électrique (2) et au moins une sortie électrique (3), et avec au moins un premier contact de commutation (4) et un pont de commutation mobile (11), dans lequel le dispositif de commutation (1) présente en outre un ensemble d'extinction d'arc (6) avec au moins une chambre d'extinction d'arc (7), dans lequel un étrier en forme de U (8) est agencé partiellement à l'extérieur autour de la au moins une chambre d'extinction d'arc (7), caractérisé en ce qu'au moins une première branche (9) de l'étrier en forme de U (8) présente une pluralité prédéterminable d'ouvertures (10) qui sont prévues ou agencées pour permettre une vue de l'intérieur de l'ensemble d'extinction d'arc (6).
  2. Dispositif de commutation (1) selon la revendication 1, caractérisé en ce qu'une paroi en matière plastique (12) délimitant la chambre d'extinction d'arc (7) est conçue au moins translucide au moins dans la région de la première branche (9) de l'étrier en forme de U (8).
  3. Dispositif de commutation (1) selon la revendication 2, caractérisé en ce que dans la paroi en matière plastique (12), une pluralité prédéterminable de tôles d'extinction (13) de la chambre d'extinction d'arc (7) sont maintenues à distance les unes des autres.
  4. Dispositif de commutation (1) selon la revendication 3, caractérisé en ce que la paroi en matière plastique (12) est agencée entre l'étrier (8) et les tôles d'extinction (13).
  5. Dispositif de commutation (1) selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'une seconde branche (14) de l'étrier en forme de U (8) présente une pluralité prédéterminable d'ouvertures (10).
  6. Dispositif de commutation (1) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les ouvertures (10) sont agencées sous la forme d'un motif sensiblement régulier dans la première et/ou seconde branche (9, 14) de l'étrier en forme de U (8).
  7. Dispositif de commutation (1) selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les ouvertures (10) sont conçues sensiblement rondes, en particulier circulaires, ou angulaires, en particulier hexagonales.
  8. Dispositif de commutation (1) selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les ouvertures (10) sont conçues de manière à ce qu'une superficie totale de toutes les ouvertures (10) de la première et/ou seconde branche (9, 14) de l'étrier en forme de U (8) est supérieure à 50 % de la superficie des première et seconde branches (9, 14).
EP15790490.5A 2014-11-18 2015-10-26 Dispositif de commutation Not-in-force EP3221876B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014116849 2014-11-18
PCT/EP2015/074779 WO2016078875A1 (fr) 2014-11-18 2015-10-26 Dispositif de commutation

Publications (2)

Publication Number Publication Date
EP3221876A1 EP3221876A1 (fr) 2017-09-27
EP3221876B1 true EP3221876B1 (fr) 2019-08-28

Family

ID=54427721

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15790490.5A Not-in-force EP3221876B1 (fr) 2014-11-18 2015-10-26 Dispositif de commutation

Country Status (3)

Country Link
EP (1) EP3221876B1 (fr)
CN (1) CN107112152A (fr)
WO (1) WO2016078875A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6417749B1 (en) * 1998-09-30 2002-07-09 Rockwell Automation Technologies, Inc. Electric contactor housing
JP3699619B2 (ja) * 1999-11-10 2005-09-28 三菱電機株式会社 電磁連結装置
CN1209777C (zh) * 2003-04-29 2005-07-06 浙江德力西电器股份有限公司 塑壳断路器的灭弧装置
DE102006054030B4 (de) * 2006-11-16 2010-06-17 Abb Ag Elektrisches Schaltgerät
EP2648199A3 (fr) * 2012-04-05 2014-03-12 ABB Schweiz AG Installation d'extinction d'arc lumineux et commutateur d'installation avec une installation d'extinction d'arc lumineux

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3221876A1 (fr) 2017-09-27
CN107112152A (zh) 2017-08-29
WO2016078875A1 (fr) 2016-05-26

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