EP2901466A1 - Gleichstrom-schalter mit einer vorrichtung zur stromrichtungsunabhängigen lichtbogenlöschung - Google Patents
Gleichstrom-schalter mit einer vorrichtung zur stromrichtungsunabhängigen lichtbogenlöschungInfo
- Publication number
- EP2901466A1 EP2901466A1 EP13770454.0A EP13770454A EP2901466A1 EP 2901466 A1 EP2901466 A1 EP 2901466A1 EP 13770454 A EP13770454 A EP 13770454A EP 2901466 A1 EP2901466 A1 EP 2901466A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- arc
- switching
- current
- magnetic field
- switch
- 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
Links
- 230000008033 biological extinction Effects 0.000 title abstract description 6
- 238000010791 quenching Methods 0.000 claims description 26
- 230000000171 quenching effect Effects 0.000 claims description 26
- 229920001187 thermosetting polymer Polymers 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229920000965 Duroplast Polymers 0.000 description 4
- 239000004638 Duroplast Substances 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 3
- 238000012217 deletion Methods 0.000 description 2
- 230000037430 deletion Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H33/182—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
-
- 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
- H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
-
- 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
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
Definitions
- the invention relates to a DC switch with a device for current direction independent arc extinguishing.
- a well-known principle for extinguishing arcs in load disconnectors and circuit breakers for alternating currents is to drive an arc by means of its own magnetic field in a specially provided quenching chamber, where it is divided and cooled by the arrangement of quenching plates in several small arcs. This cooling causes a voltage increase, which ultimately leads to the shutdown of the stream. Helpful in this case is the natural zero crossing of the current at an applied AC voltage source.
- EP 2 061 053 A2 From EP 2 061 053 A2 it is known to use the housing of a switching device for AC applications in the manufacture of a switching device for DC applications and to adapt this housing with little effort for DC applications, by a particular on the outside of the housing arranged permanent magnets is added. As a result, the DC switching capacity of conventional AC switching devices is substantially increased because arcs are moved away from contact points of the switching device in extinguishing chambers by the permanent magnetic field. As an advantage of the teaching of EP 2 061 053 A2 is also seen that not every separation distance and each extinguishing device in each case a single magnet needs to be assigned, as is the case with known DC switching devices.
- a switch which is suitable for a polarity-independent multi-pole DC operation and has at least two switching chambers.
- Each of the switching chambers has two extinguishing chambers with quenching plates for extinguishing arcs occurring in the respective switching chamber between contact areas.
- Two magnets generate a magnetic field in the region of the switching contacts of all switching chambers such that arcs are driven independently of the current direction in the arc in the direction of one of the extinguishing chambers of the switching chambers.
- This switch has a fast, reliable, and independent of the current direction erase behavior and therefore prevents polarization-induced installation errors and is suitable for applications where switches are required for both current directions.
- the object of the present invention is to propose a further improved DC switch.
- An underlying idea of the present invention is to provide differently oriented magnetic fields for deflecting arcs resulting from the disconnection of a DC switch with a plurality of switching units. As a result, regardless of the current direction of the direct current to be switched, a deflection into extinguishing devices for extinguishing arcs is always effected.
- the arrangement of the means for generating the magnetic fields for deflecting arcs in quenching can be selected according to the invention so that arcs are deflected by generated magnetic fields in some switching units in quenchers and other switching units opposite, for example, against a switching shaft of a DC switch.
- the deflection of arcs for example, against rotating Doppelunterbrecherschaltwellen from eg a thermoset of rotary indexing devices used as switching units can cause an extension and simultaneous cooling of the arc, without the surrounding components are destroyed. Therefore, the inventive principle of aligning magnetic fields for deflecting arcs in switching units of a DC switch may result in the voltage increase desired to separate the DC and arc breaks, and thus also contribute to the separation of small and critical currents at high voltages, for example can occur in the initially described cases.
- the arrangement and orientation of magnetic fields for deflecting arcs can be distributed in principle according to the invention in principle.
- the advantage is a uniform distribution as possible, so that in reversible current flow directions about similar extinguishing conditions are present and the switch can safely shut off the current flow regardless of polarity.
- the invention is suitable to use switching devices for AC applications by technically less expensive modifications for switching DC currents.
- An embodiment of the invention now relates to a DC switch having a device for current-independent arc quenching having at least two interconnected switching units, each switching unit having at least one current path with a breaker path and each current path at least two switching contact elements for forming the breaker path, at least one arc quenching device, the one or each of a plurality of current paths of the switching units, and one or more means for magnetic field generation, each generated magnetic field associated with a breaker distance of different switching units and aligned so that its field lines are substantially transverse to the respective interruption distance, and wherein the deflection forces of at least two magnetic fields generated in a given direction of current flow through the current paths opposite to each other along the respective interruption path only stretching arcs act so that at least one arc is deflected in the direction of the arc quenching device and another arc is deflected away from the arc quenching device.
- the devices for magnetic field generation may comprise, for example, electromagnets, permanent magnets and / or coil.
- the switching units may be rotary double breakers, and an arc deflected away from the arc extinguisher may be directed to the switching shaft or a switching shaft segment of a double breaker.
- the switching shaft or the switching shaft segment can serve to cool a directed thereon arc so that it breaks off or goes out.
- a rotary double breaker has two interrupting paths, and the four switching contact element are each closed by a rotation separated, for example, two switching contact elements coupled to the switching shaft and thus movably mounted and two other switching contact element are fixed.
- Each switching unit can each have at least one device for magnetic field generation.
- a separate magnetic field can be generated for each switching unit, as a function of the predetermined current flow direction through the at least current path of a switching unit For example, can be determined by appropriate adjustment of the magnetic field, in which direction a resulting arc is deflected.
- the parts of the switching units may be made of a material that causes cooling of an arc, in particular of a thermosetting plastic. It has been shown that a thermoset for cooling arcs is particularly well-suited without arcing damage to the thermoset occur.
- the devices for magnetic field generation have permanent magnets, this has the advantage that no separate supply of electrical energy is required for generating a magnetic field.
- the implementation with permanent magnets compared to electromagnets or coils is less expensive and less prone to failure.
- the DC switch may be a four-phase AC switch, which is designed to switch direct current by appropriately interconnecting the individual switching units.
- FIG. 1 an embodiment of a DC circuit breaker according to the invention with four switching units and four magnetic field generating means.
- Fig. 2 is a side view of a switching unit of the circuit breaker of Figure 1 without magnetic field generating means and an arc between the switch contacts of the unit.
- FIG. 3 shows the switching unit with permanent magnets shown in FIG. 2 for generating a magnetic field for deflecting the arc between the switching contacts as a function of the current flow direction through the current paths of the switching unit;
- Fig. 4 the switching unit shown in Fig. 3 with quenching plates for deleting a deflected to the quenching arc.
- the switch disconnector 10 shown in FIG. 1 which is provided in itself for the switching of 4-phase alternating current, has four switching units 12, 14, 16 and 18 of basically the same design for each phase N, L1, L2 and L3.
- the switching units 12, 14, 16 and 18 used are rotary double breakers, each having two current paths and two interrupting paths, which are connected together in series, in order to achieve the required high total arc voltage and thus an externally applied, counteract driving network voltage and extinguish the power as soon as possible.
- the direction of current flow through the current paths is the same for each of the double breakers.
- the two current paths are denoted by the reference symbols 20 and 22 and the two interruption circuits are denoted by the reference symbols 24 and 26.
- Each double interrupter 12, 14, 16 and 18 also includes a thermoswitch switching shaft segment 38 which is coupled to and rotates with a selector shaft (not shown) to disconnect the contacts 28, 30 and 29, 31 of the interrupter legs 24 and 26 or connect.
- Fig. 2 shows a double breaker in a side view.
- the first flow path 20 has a first interrupter gap 24 with a lower fixed contact 28 and a contact piece with an upper loose contact 30.
- the switching piece with the upper loose contact 30 is coupled via a switching contact arm 40 with the switching shaft segment 38 and can be moved by a rotation of the segment 38, so that the interruption path 24 can be opened or closed.
- the second current path 22 has a second breaker gap 26 with an upper fixed contact 31 and a switching piece with a lower loose contact 29, which is also coupled via the switching contact arm 40 with the segment 38.
- the Losête 29 and 30 are therefore moved synchronously over the switching shaft segment 38, so that the two interrupter lines 24 and 26 are opened and closed synchronously.
- two extinguishing chambers each formed by packets with arc extinguishing plates 32 and 34, are arranged in each of the four double interrupters 12, 14, 16 and 18 in the area of the interrupter lines 24 and 26, respectively.
- the arc quenching plate packages 32 and 34 are in this case arranged so that they extinguish arcs, which are directed in a predetermined direction away from the Duroplast switching shaft segment 38 in the quenching plates 32 and 34, respectively.
- an electric arc 42 not deflected by a magnetic field is shown between the two contacts 29 and 31.
- each double interrupter 12, 14, 16, and 18 each has an array of permanent magnets 36 around at least one of their interrupter legs 24 and 26 (FIG. 1 shows arrays of permanent magnets 36 only around the second interrupter legs 26, though) permanent magnets could be arranged around the first breaker gap 24).
- the arrangement of permanent magnets 36 generates a magnetic field in the region of the surrounding interrupting path 26, the field lines of which extend essentially transversely to the interruption path 26 that is surrounded.
- the magnetic fields of the permanent magnet assemblies are poled to produce at a given current flow direction through the current paths 20 and 22 on arcs deflecting forces that deflect the arcs in a predetermined direction, typically either to the arc splitter stack
- at least two of the generated magnetic fields are poled so that at operating current direction an arc occurring at a breaker distance to the arc quenching packages 34 and an arc occurring at another interruption distance to the thermoset switching shaft segments 38th is distracted.
- at least one arc is always deflected to the arcing splitter packets 34 and another arc to the thermoset switching shaft segments 38.
- the arrangement of the permanent magnets is now chosen so that in a current flow direction through the current paths of the double circuit breaker 12, 14, 16 and 18 in the operating current direction arcs through the permanent magnetic field at the first and second double breaker 12 and 14 in the respective quenching chamber and arcs in the other two double interrupters 16 and 18 are oppositely deflected against the respective switching shaft segments of thermoset of the double interrupters 16 and 18, as indicated by the bold arrows in Fig. 1.
- the distraction arcing against the double breaker switch shaft segment made of thermosetting plastic that is rotating as it opens into the double breaker causes an extension and simultaneous cooling of the arc without destroying surrounding components. This leads to the desired voltage increase and thus also to the deletion of small and critical currents at high voltages.
- FIG. 3 are shown in a side breaker shown in a side view due to the arrangement of permanent magnets 36 a deflected to Duroplast Wegensegment 38 Lichbogen 44 and deflected in the opposite direction arc 46 in reverse current flow direction.
- 4 shows a side view dual breaker with arcing splitter packages 32 and 34 and deflected arcs 44 and 46. It can clearly be seen how the arc 46 is directed into the arc splitter stack 34 from which it is cooled and broken becomes. Similarly, the deflected to the thermoset switching shaft segment 38 Lichbogen 44 is cooled so that its resistance increases, resulting in the demolition of the arc 44.
- the arrangement of the permanent magnets 36 can also be distributed in any other way.
- the permanent magnet arrangements should only possible be evenly distributed, so in reversible current flow direction similar extinguishing conditions are present and the device thus polarity-independent switching off the current flow safely.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012109195 | 2012-09-27 | ||
PCT/EP2013/070002 WO2014049011A1 (de) | 2012-09-27 | 2013-09-25 | Gleichstrom-schalter mit einer vorrichtung zur stromrichtungsunabhängigen lichtbogenlöschung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2901466A1 true EP2901466A1 (de) | 2015-08-05 |
EP2901466B1 EP2901466B1 (de) | 2016-12-07 |
Family
ID=49261532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13770454.0A Active EP2901466B1 (de) | 2012-09-27 | 2013-09-25 | Gleichstrom-schalter mit einer vorrichtung zur stromrichtungsunabhängigen lichtbogenlöschung |
Country Status (5)
Country | Link |
---|---|
US (1) | US9552945B2 (de) |
EP (1) | EP2901466B1 (de) |
CN (1) | CN104685594B (de) |
CA (1) | CA2886423A1 (de) |
WO (1) | WO2014049011A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6011664B2 (ja) | 2015-03-13 | 2016-10-19 | オムロン株式会社 | 接点機構およびこれを用いたスイッチ |
FR3050311B1 (fr) * | 2016-04-15 | 2020-12-04 | Schneider Electric Ind Sas | Disjoncteur electrique a courant continu |
CN106298297A (zh) * | 2016-08-31 | 2017-01-04 | 陈国良 | 具有双触点动触头的断路器和带有漏电开关的电源插排 |
DE102016216392A1 (de) * | 2016-08-31 | 2018-03-01 | Siemens Aktiengesellschaft | Schalteinheit für einen elektrischen Schalter und elektrischer Schalter |
CN208622653U (zh) * | 2018-04-16 | 2019-03-19 | 泰科电子(深圳)有限公司 | 继电器 |
FR3095890B1 (fr) * | 2019-05-06 | 2021-07-16 | Schneider Electric Ind Sas | Pôle limiteur d’interrupteur électrique et interrupteur électrique à courant continu comportant un tel pôle limiteur |
CN210722924U (zh) | 2019-07-30 | 2020-06-09 | 伊顿电气有限公司 | 一种用于断路器的电极以及断路器 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1140998B (de) | 1955-07-30 | 1962-12-13 | Siemens Ag | Verfahren zur Herstellung von Kammerzellen fuer Expansionskammern in Expansionsschaltern |
DE1075722B (de) * | 1956-11-05 | 1960-02-18 | LICENTIA Patent Verwaltungs GmbH Frankfurt/M | Magnetische Licht bogenblasemnchtung bei Gleichstromschnellschaltern |
DE1140997B (de) * | 1959-08-07 | 1962-12-13 | Continental Elektro Ind Ag | Lichtbogenloeschvorrichtung fuer Wechsel- und Gleichstromschaltgeraete |
FR2618251B1 (fr) | 1987-06-25 | 1989-11-17 | Merlin Gerin | Interrupteur rotatif a piste courbe de migration d'une racine d'arc. |
DE19910032C1 (de) * | 1999-03-08 | 2000-04-06 | Moeller Gmbh | Mehrpoliger Leistungsschalter |
DE29918974U1 (de) * | 1999-10-29 | 2001-03-08 | Moeller Gmbh | Elektrisches Schutzschaltgerät |
DE10049407C2 (de) * | 2000-10-05 | 2002-10-10 | Aeg Niederspannungstech Gmbh | Schaltwelleneinheit für elektrische Schalter, insbesondere für Niederspannungsschalter |
JP3997818B2 (ja) * | 2001-05-28 | 2007-10-24 | 富士電機機器制御株式会社 | 配線用回路しゃ断器 |
JP2004349203A (ja) * | 2003-05-26 | 2004-12-09 | Omron Corp | 直流負荷用接点構成および該接点構成を有した開閉器 |
DE102006035844B4 (de) * | 2006-08-01 | 2008-06-19 | Schaltbau Gmbh | Schütz für Gleichstrom- und Wechselstrombetrieb |
DE102007054958A1 (de) * | 2007-11-17 | 2009-06-04 | Moeller Gmbh | Schaltgerät für Gleichstrom-Anwendungen |
FR2938969A1 (fr) * | 2008-11-21 | 2010-05-28 | Schneider Electric Ind Sas | Dispositif de coupure pour couper un courant continu bidirectionnel et installation a cellules photovoltaiques equipee d'un tel dispositif |
EP2463878A1 (de) | 2010-12-07 | 2012-06-13 | Eaton Industries GmbH | Schalter mit Löschkammer |
-
2013
- 2013-09-25 WO PCT/EP2013/070002 patent/WO2014049011A1/de active Application Filing
- 2013-09-25 EP EP13770454.0A patent/EP2901466B1/de active Active
- 2013-09-25 CN CN201380050487.8A patent/CN104685594B/zh active Active
- 2013-09-25 US US14/430,555 patent/US9552945B2/en active Active
- 2013-09-25 CA CA2886423A patent/CA2886423A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2014049011A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN104685594B (zh) | 2017-10-24 |
US20150243458A1 (en) | 2015-08-27 |
WO2014049011A1 (de) | 2014-04-03 |
CN104685594A (zh) | 2015-06-03 |
EP2901466B1 (de) | 2016-12-07 |
CA2886423A1 (en) | 2014-04-03 |
US9552945B2 (en) | 2017-01-24 |
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