EP3127131A1 - Mehrpoliges leistungsschütz - Google Patents
Mehrpoliges leistungsschützInfo
- Publication number
- EP3127131A1 EP3127131A1 EP15701099.2A EP15701099A EP3127131A1 EP 3127131 A1 EP3127131 A1 EP 3127131A1 EP 15701099 A EP15701099 A EP 15701099A EP 3127131 A1 EP3127131 A1 EP 3127131A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- power contactor
- barrier
- contact
- fixed
- armature
- 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
- 230000004888 barrier function Effects 0.000 claims abstract description 45
- 238000010791 quenching Methods 0.000 claims abstract description 6
- 230000000171 quenching effect Effects 0.000 claims abstract description 6
- 239000004033 plastic Substances 0.000 claims description 13
- 229920001971 elastomer Polymers 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 3
- 230000005405 multipole Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 238000007664 blowing Methods 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229920001821 foam rubber Polymers 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- 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
- H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
-
- 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
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/38—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
-
- 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
-
- 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
- H01H2009/305—Means for extinguishing or preventing arc between current-carrying parts including means for screening for arc gases as protection of mechanism against hot arc gases or for keeping arc gases in the arc chamber
Definitions
- the present invention relates to a multi-pole contactor with an electromagnetic drive, a movable armature of the drive, and with at least two movable contacts, which are arranged side by side and connected to the armature.
- the movable contacts are assigned corresponding fixed contacts of the power contactor.
- the armature is from an open position in which the movable contacts and the fixed contacts do not touch each other, transferred to a closed position in which the movable contacts come into contact with the fixed contacts, also in the generic contactor each contact point consisting of bewegli - Chem contact and corresponding fixed contact, associated with an arc quenching device.
- Generic power contactors are used in particular as motor contactors in railcars. Power contactors used in railcars must be able to reliably switch particularly high outputs. Due to increasingly powerful engines, the power requirements of the motor contactors used are also growing. In particular, incidents must also be taken into account. For example, it may happen that a thyristor breaks down in the converter and thus generates a short circuit. In case of failure, the electric motor of the rail car acts as a generator, generating several 100 KW of power. The power must be switched off safely and reliably with the contactor. The same applies if the fault does not occur in the inverter but in the contactor itself. The frequencies to be switched are in the range between 50 Hz and 400 Hz.
- arc quenching devices are provided, in which the switching arc is driven by means of a magnetic field and thereby deleted.
- the greater the power to be switched the more difficult it is to extinguish the switching arc in a short time.
- the switching arc With correspondingly high power, the switching arc generates a large amount of electrically conductive plasma which distributes itself under pressure inside the device. Due to the plasma, there is a risk that a short circuit will be generated at various points in the contactor. In particular, the plasma can cause that the switching arc short circuits the contact points of adjacent poles or strikes the ground.
- Object of the present invention is therefore to improve the contactor of the generic type and to increase the switching capability.
- the invention is solved by the features of independent claim 1. Accordingly, in a generic power contactor then an inventive solution to the problem, if between two adjacent juxtaposed movable contacts of adjacent poles, a plasma barrier is disposed, the plasma barrier, a first barrier and a second barrier wherein one of the two barriers is connected to the armature and the other of the two barriers is connected to a fixed part of the power contactor, and wherein the first barrier and the second barrier at least partially overlap each other in the position of the armature between the open position and the closed position.
- the invention prevents plasma, which is generated when opening the contacts due to a switching arc, from a contact point or a chamber enclosing the contact point to an adjacent contact point or the associated chamber. This also prevents the switching arc from striking the adjacent contact point.
- one of the two barriers is attached to a resting on the yoke plate of the contactor insulating or indirectly connected to the Jochplate. In order to achieve an optimum sealing effect, this barrier preferably ends flush with the yoke plate.
- the barrier connected to the anchor may be connected either directly or indirectly to the anchor. It is preferably connected via a contact carrier with the armature.
- the distance between the first and second barrier in the covering area is less than 5 mm, more preferably less than 2 mm, and particularly preferably less than 1 mm.
- the first barrier and the second barrier interact in the manner of a labyrinth seal. In this way The plasma is particularly effectively prevented from getting from one contact point to an adjacent contact point.
- the barriers are particularly simple and inexpensive to implement, if they are each formed by at least one plate.
- the first barrier has at least two parallel plates, wherein at least one plate of the second barrier is arranged between the two parallel plates of the first barrier.
- This embodiment is particularly easy to implement when the two parallel plates are fastened to a contact carrier connected to the armature or are part of the contact carrier.
- the barriers are made of plastic or ceramic. These two materials are electrically non-conductive, which ensures that no electrical conductivity is produced between two adjacent contact points.
- the power contactor comprises a yoke plate, wherein at least one component of the power contactor, which is mounted in close proximity to one of the contact points on the yoke plate, is secured by means of one or more plastic screws on the yoke plate.
- the plastic screws are designed as high-strength plastic screws.
- This embodiment is also suitable for screws that are not screwed into the yoke plate of the power contactor, but in any grounded component of the power contactor.
- the components to be fastened are, for example, housing parts or arc extinguishing chambers.
- plastic screws is not only in the power contactor according to the invention but generally suitable for contactors.
- the use of plastic screws for the above purposes is therefore a separate invention, although it leads to a further improvement in the switching capability in the power contactor according to the invention.
- the yoke plate of the power contactor on the side facing the contact points at least partially provided with an insulating film. This prevents exposure to plasma and further reduces the risk of short circuits.
- the armature is connected to an actuating axis of metal, wherein the actuating axis is at least partially surrounded by a fixed insulating sleeve.
- This embodiment is particularly recommended when the actuation axis is arranged in the immediate vicinity of one of the contact points.
- a three-pole power contactor which is used as a motor contactor in railcar railcars, it is generally the case that one of the contact bridges (movable contact) is attached directly to one end of the actuation axis.
- the middle contact bridge is virtually in the same plane in which the actuating axis is located. In this constellation, there is a significant risk that the plasma generated by the arc comes into contact with the actuating axis. However, this is prevented by the fixed insulating sleeve.
- the fixed insulating sleeve thus forms a fixed component of the power contactor and is preferably attached to the resting on the yoke plate insulating plate. In order to achieve an optimum sealing effect, the fixed insulating sleeve preferably terminates flush with the yoke plate. If the actuating axis is cylindrical, it makes sense to form the fixed insulating sleeve in a hollow cylinder.
- the actuating axis is at least partially surrounded by a relative to the fixed insulating sleeve moving insulating sleeve, wherein the moving insulating sleeve is fixedly connected to the actuating axis, and wherein stationary insulating sleeve and moving insulating sleeve cooperate telescopically.
- the fixed insulating sleeve and the moving insulating sleeve also cooperate in the manner of a labyrinth seal.
- both the fixed insulating sleeve and the moving are Insulating sleeve made of plastic or ceramic. Further preferably, there is a very small distance between the two sleeves in order to optimize the sealing effect. A distance of less than 1 mm is preferred.
- the movable contacts and / or the fixed contacts are each carried out with an arcing stirrer, wherein the arcs are at least partially tapered.
- contacts with tapered arc guide are not only suitable for the power contactor according to the invention but generally for use in power contactors.
- An embodiment with a tapered arc guide and the advantageous embodiments described below therefore represent a separate invention, which, however, likewise contributes to the further optimization of the switching capability of the contactor according to the invention.
- An arc guide is an extension of the contact which protrudes at an angle from the respective contact and via which the switching arc is conducted after its formation into the corresponding arc quenching device.
- the arc guide grains are kept as narrow as the lifetime requirements permit.
- the arc guide grains are preferably at least 25%, preferably at least 50%, narrower than the actual contact surface of the respective contact.
- the arc guide is designed as a separate component and attached to the respective fixed contact or movable contact. Preferably, the attachment is done by riveting.
- the arc guide grains are made of bronze.
- the sponge rubber mat is preferably designed such that it encloses the connecting part in a sealing manner.
- This embodiment has the advantage that the plasma generated by the arc does not come into contact with the yoke plate or earthed components of the power contactor arranged thereunder via the opening, and thereby creates the danger of a short circuit. It should be noted that the sealing of a breakthrough by means of a sponge rubber mat can be made not only in the power contactor according to the invention but generally in power contactors. This embodiment therefore represents a separate invention, which, however, contributes to the further optimization of the switching capability of the contactor according to the invention.
- Figure 1 is a partially sectioned oblique view of a power contactor according to the invention
- Figure 2 is a schematic longitudinal section through the contactor according to the invention of Figure 1
- FIG. 3 shows a detail view of one of the contact bridges of the power contactor according to the invention from FIGS. 1 and 2.
- FIG. 1 shows a partially sectioned oblique view of a power contactor 1 according to the invention.
- the power contactor has a three-pole configuration and comprises three switching points arranged next to one another.
- the armature 2 of the electromagnetic drive is over an actuating shaft 14 connected to a contact carrier 3.
- the contact carrier 3 of the power contactor has three contact bridge holders 23 shown in greater detail in FIG. 2, wherein each of the three contact bridge holders carries one of the three contact bridges 4 arranged next to one another.
- the three contact bridges form the moving contacts of the contactor.
- One of the three contact bridge holders is arranged at the upper end of the actuating axis 14, which is actuated by the electromagnetic drive 2.
- the contact carrier 3 is by means of the armature 2 of an open position in which the movable contacts 4 and the respective associated fixed contacts 5 do not touch each other, can be converted into a closed position in which the movable contact te 4 with the fixed contacts 5 come into contact and thereby establish an electrical connection.
- Opening the contacts creates a switching arc, which must be brought to extinction as quickly as possible, especially at high loads to be switched to prevent damage to the contacts or other components of the power contactor.
- Each contact point consisting of movable contact 4 and corresponding fixed contact 5, is therefore associated with an arc quenching device.
- the extinguishing chambers 6 of the arc extinguishing devices are shown for 4 of the total of 6 contact points in FIG.
- a plasma barrier is provided between two adjacent contact points.
- the plasma barrier consists essentially of partitions, which interact in the manner of a labyrinth seal and separate the corresponding contact points from each other.
- each plasma barrier has two parallel plates 7.1 and 7.2, which are fixedly connected to the contact carrier 3.
- the two parallel aligned plates 7.1 and 7.2 include between them another plate 8, which is connected to a fixed component of the power contactor.
- a corresponding plastic plate 22 is applied to the yoke plate 9 of the power contactor, of which the middle Plate 8 protrudes substantially perpendicular.
- the plates 7.1 and 7.2 cover the middle plate 8 at least partially, in each position of the armature between the open and the closed position. The plates 7.1 and 7.2 thus cooperate with the plate 8 in the manner of a labyrinth seal and thus effectively prevent plasma, which is generated at one of the contact points by a switching arc, moves to the adjacent switching point.
- a plasma barrier is also provided in relation to the actuating axis 14 consisting of metal. It consists of a fixed insulating sleeve 12 which protrudes from the plastic plate 22, and a moving insulating sleeve 13, which is part of the contact carrier 3.
- the fixed insulating sleeve 12 and the moving insulating sleeve 13 act telescopically and in the manner of a labyrinth seal together. There is a very short distance between the two sleeves, as well as between the plates 8 and 7.1 or 7.2.
- an auxiliary switch is provided in the power contactor, which is actuated via the armature.
- a connecting part 20 is connected to the contact carrier 3 for this purpose.
- the connecting part 20 actuates a arranged below the yoke plate 9 auxiliary contact, and is therefore passed through an opening 19 in the yoke plate 9.
- the opening 19 is sealed by means of a sponge rubber mat 21.
- the foam rubber mat has a significantly smaller breakthrough compared to the opening 19 of the yoke plate 9, through which the connecting part 20 is passed.
- FIG. 3 shows one of the three contact bridges 4 in detail. Evident are the two contact surfaces 18, which come into contact with the corresponding fixed contacts 5 when the contactor is closed. At the two ends of the contact bridge 4, a substantially perpendicular projecting arc guide 15 is arranged in each case.
- the Lichtbogenleit technologicalner 15 are made of bronze and riveted to the contact bridge 4.
- the rivet connections 17 are arranged in the middle region of the contact bridge.
- the vertically projecting region 16 of the arc horns 15 is strongly tapered in order to achieve a narrowing of the magnetic field lines and thus an amplification of the electromagnetic blowing effect.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014004665.6A DE102014004665B4 (de) | 2014-03-31 | 2014-03-31 | Mehrpoliges Leistungsschütz |
PCT/EP2015/000124 WO2015149895A1 (de) | 2014-03-31 | 2015-01-22 | Mehrpoliges leistungsschütz |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3127131A1 true EP3127131A1 (de) | 2017-02-08 |
EP3127131B1 EP3127131B1 (de) | 2018-10-31 |
Family
ID=52396648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15701099.2A Active EP3127131B1 (de) | 2014-03-31 | 2015-01-22 | Mehrpoliges leistungsschütz |
Country Status (10)
Country | Link |
---|---|
US (1) | US9799471B2 (de) |
EP (1) | EP3127131B1 (de) |
JP (1) | JP6512491B2 (de) |
KR (1) | KR101821920B1 (de) |
CN (1) | CN106537539B (de) |
DE (1) | DE102014004665B4 (de) |
ES (1) | ES2703554T3 (de) |
RU (1) | RU2646620C1 (de) |
UA (1) | UA118695C2 (de) |
WO (1) | WO2015149895A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3026222B1 (fr) * | 2014-09-24 | 2017-06-23 | Schneider Electric Ind Sas | Actionneur electromagnetique et contacteur electrique comprenant un tel actionneur |
DE102018216211B3 (de) | 2018-09-24 | 2020-02-20 | Siemens Aktiengesellschaft | Kurzschließereinrichtung und Umrichter |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3485979A (en) * | 1967-02-27 | 1969-12-23 | Westinghouse Electric Corp | Protective gap and by-pass switch for series capacitor installations |
FR2519186A1 (fr) * | 1981-12-24 | 1983-07-01 | Telemecanique Electrique | Contacteur de faible encombrement a haut niveau d'isolement |
SU1046793A2 (ru) * | 1982-05-18 | 1983-10-07 | Всесоюзный Научно-Исследовательский Проектно-Конструкторский И Технологический Институт Низковольтного Аппаратостроения "Внииэлектроаппарат" | Многополюсный герметичный контактор |
FR2579014B1 (fr) * | 1985-03-18 | 1987-04-10 | Telemecanique Electrique | Interrupteur multipolaire a commande electromagnetique a cloisons decalees |
SU1309112A1 (ru) * | 1985-07-03 | 1987-05-07 | Всесоюзный Научно-Исследовательский,Проектно-Конструкторский И Технологический Институт Релестроения | Многополюсное электромагнитное коммутационное устройство |
JP2880543B2 (ja) * | 1989-11-29 | 1999-04-12 | 株式会社日立製作所 | ガス開閉器 |
FR2687251B1 (fr) * | 1992-02-11 | 1994-04-29 | Telemecanique | Structure de coupure pour disjoncteur. |
US5406440A (en) * | 1992-05-01 | 1995-04-11 | Allen-Bradley Company, Inc. | Soft-closure electrical contactor |
DE19546763C2 (de) * | 1995-12-14 | 2001-05-31 | Tyco Electronics Logistics Ag | Elektromagnetisches Relais |
US6013889A (en) | 1997-06-02 | 2000-01-11 | Allen-Bradley Company, Llc | Method for retaining a movable contact in a circuit interrupter |
JP3411206B2 (ja) * | 1997-12-26 | 2003-05-26 | 三菱電機株式会社 | 接点開閉機器の消弧装置 |
JPH11353968A (ja) * | 1998-06-09 | 1999-12-24 | Mitsubishi Electric Corp | 開閉器 |
US6417749B1 (en) * | 1998-09-30 | 2002-07-09 | Rockwell Automation Technologies, Inc. | Electric contactor housing |
US6037555A (en) * | 1999-01-05 | 2000-03-14 | General Electric Company | Rotary contact circuit breaker venting arrangement including current transformer |
FR2795227B3 (fr) * | 1999-06-18 | 2001-07-20 | Schneider Electric Ind Sa | Appareil electromagnetique de commutation de type multipolaire |
US6377143B1 (en) * | 2001-03-16 | 2002-04-23 | Eaton Corporation | Weld-free contact system for electromagnetic contactors |
US6407354B1 (en) * | 2001-04-23 | 2002-06-18 | Eaton Corporation | Electrical switching apparatus including a baffle member having a deflectable flap |
AU2004274983B2 (en) * | 2003-09-23 | 2009-11-12 | Moeller Gebaudeautomation Gmbh | Switch |
US7750770B2 (en) * | 2006-09-25 | 2010-07-06 | Rockwell Automation Technologies, Inc. | Gas diverter for an electrical switching device |
DE102009013337B4 (de) | 2009-03-16 | 2011-01-27 | Schaltbau Gmbh | Lichtbogenresistenter Schütz |
RU2404476C1 (ru) * | 2009-08-10 | 2010-11-20 | Открытое акционерное общество "Контактор" | Многополюсный автоматический выключатель |
KR101681591B1 (ko) * | 2010-01-25 | 2016-12-01 | 엘에스산전 주식회사 | 전자 개폐기 |
JP5573250B2 (ja) * | 2010-03-09 | 2014-08-20 | オムロン株式会社 | 封止接点装置 |
CN102592887B (zh) * | 2011-01-11 | 2014-03-19 | 沈阳二一三控制电器制造有限公司 | 多极直流接触器 |
DE102011076290A1 (de) * | 2011-05-23 | 2012-11-29 | Siemens Aktiengesellschaft | Stern-Dreieck-Verdrahtung, insbesondere für eine Schützschaltung auf einer Montageplatte |
CN203288519U (zh) * | 2013-05-13 | 2013-11-13 | 安徽省明光市爱福电子有限公司 | 一种带灭电弧的接触器外盖 |
KR101513208B1 (ko) * | 2013-11-08 | 2015-04-17 | 엘에스산전 주식회사 | 배선용 차단기 |
-
2014
- 2014-03-31 DE DE102014004665.6A patent/DE102014004665B4/de active Active
-
2015
- 2015-01-22 EP EP15701099.2A patent/EP3127131B1/de active Active
- 2015-01-22 CN CN201580017709.5A patent/CN106537539B/zh active Active
- 2015-01-22 WO PCT/EP2015/000124 patent/WO2015149895A1/de active Application Filing
- 2015-01-22 UA UAA201610763A patent/UA118695C2/uk unknown
- 2015-01-22 US US15/300,749 patent/US9799471B2/en active Active
- 2015-01-22 KR KR1020167030199A patent/KR101821920B1/ko active IP Right Grant
- 2015-01-22 RU RU2016137180A patent/RU2646620C1/ru active
- 2015-01-22 ES ES15701099T patent/ES2703554T3/es active Active
- 2015-01-22 JP JP2016559567A patent/JP6512491B2/ja active Active
Also Published As
Publication number | Publication date |
---|---|
JP6512491B2 (ja) | 2019-05-15 |
UA118695C2 (uk) | 2019-02-25 |
RU2646620C1 (ru) | 2018-03-06 |
KR20160137637A (ko) | 2016-11-30 |
US9799471B2 (en) | 2017-10-24 |
DE102014004665A1 (de) | 2015-10-01 |
US20170062156A1 (en) | 2017-03-02 |
KR101821920B1 (ko) | 2018-01-25 |
WO2015149895A1 (de) | 2015-10-08 |
WO2015149895A9 (de) | 2016-07-14 |
CN106537539B (zh) | 2018-11-20 |
DE102014004665B4 (de) | 2019-12-05 |
WO2015149895A4 (de) | 2016-09-01 |
JP2017510040A (ja) | 2017-04-06 |
CN106537539A (zh) | 2017-03-22 |
EP3127131B1 (de) | 2018-10-31 |
ES2703554T3 (es) | 2019-03-11 |
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