EP2596511A1 - Unidirectionally switching dc contactor - Google Patents
Unidirectionally switching dc contactorInfo
- Publication number
- EP2596511A1 EP2596511A1 EP11723249.6A EP11723249A EP2596511A1 EP 2596511 A1 EP2596511 A1 EP 2596511A1 EP 11723249 A EP11723249 A EP 11723249A EP 2596511 A1 EP2596511 A1 EP 2596511A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- arc
- contact point
- switching
- contactor
- 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
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
- H01H33/20—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
- 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
-
- 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
- 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 present invention relates to a unidirectionally switching DC contactor with a double break with two contact points, each comprising a fixed contact and a movable contact, wherein the movable contacts are arranged on a contact bridge and wherein forms a switching arc when opening the contact points at each of the contact points, with an arc quenching device and with a blowing device for blowing at least one of the switching arcs from the corresponding contact point.
- Such unidirectional switching DC contactors are used, for example, in railway applications and switch direct current up to 3 kV rated voltage.
- a contactor with double break is known for example from DE 1 246 851.
- This document shows multiple-break DC devices, such as bridge contacts.
- Each switching point of the DC switching devices is associated with an arc quenching device with Deionblechen.
- permanent magnets are provided in the Gleichstrornschaitgeräien that blow the resulting switching arcs in the arc quenching. Since each contact point is associated with an arc quenching device, this contactor has a relatively large footprint.
- the invention provides that adjacent to the movable contact of the first contact a bridging plate is arranged, wherein the contact bridge and the bridging plate are electrically isolated from each other, and the bridging plate is electrically connected to the fixed contact of the second contact point, so that the first switching arc of the first contact point skipped by the blowing with the blowing device from the contact bridge on the bridging plate and thus the second switching arc is bridged at the second contact point.
- the DC contactor according to the invention is thus characterized by a very simple training. Since the second switching arc is bridged at the second contact point when skipping the first switching arc of the contact bridge on the bridging plate, the second switching arc is simply brought to extinction. Therefore, it remains only the first switching arc stand, which is blown by the blowing device in the arc quenching and extinguished there. It therefore only needs one light sheet quenching device are provided. As a result, the DC contactor on the desired compactness and low production costs.
- the arc quenching device may be arranged adjacent to the first contact point.
- the resulting at the first contact point first switching arc so only has to cover a small way to the arc quenching device and is therefore quickly brought to extinction. Burning damage in the contactor can be avoided.
- the contact bridge and the bridging plate are separated by an air gap.
- the bridging plate is designed as an arc guide plate and at least partially surrounds an edge region of the arc quenching device.
- One of the arc root points of the first switching arc is therefore guided on this arc guide plate along the arc extinguishing device.
- the first Drucklichibogen is stretched and blown along its length in the arc quenching device.
- the DC contactor has a good erase function.
- the fixed contact of the first contact point is connected to a second arc guide plate.
- the fixed contact is only extended and thus formed integrally with the arc guide plate.
- the second arc root of the first switching arc is guided along the arc quenching device, so that a further extension and thus a safe extinction of the first switching arc is ensured.
- the second arc guide plate also surrounds an edge region of the arc quenching device.
- a protective covering is arranged in the region of the second contact point.
- this protective covering is made of erosion-resistant ceramic. But it can also be an isolated suspended metal element, for example made of stainless steel, are used. The transition of the one arc root of the first switching arc at the first contact point of the contact bridge on the bridging plate can be facilitated by the fact that the contact bridge is bent at its end facing the bridging plate in the direction of the bridging plate.
- the blowing device is arranged on the side facing away from the contact points of the contact bridge behind the bent end of the contact bridge. This allows good protection of the blowing device.
- the DC contactor is surrounded by a housing, wherein the housing is formed in two-shell shell technology.
- the housing in the region of the arc quenching device has a removable insert which is connected to arranged in this area arc extinguishing elements of the arc quenching device.
- the insert with the arc extinguishing elements can be easily removed, thus allowing access to the contact points of the contactor, e.g. for inspection purposes.
- the DC contactor 1 comprises a double break with two contact points 2, 3.
- Each of the contact points 2, 3 comprises a fixed contact 4, 6 and a movable contact 5, 7.
- the movable contacts 5, 7 are on a common contact bridge 8 arranged.
- the contact bridge 8 is mounted on a movable contact carrier 9 and can be brought over the contact carrier 9 associated drive mechanisms of a switching position in which the fixed contacts 4, 6 and the movable contacts 5, 7 of each contact points 2, 3, in an open position, in which the fixed contacts 4, 6 and the movable contacts 5, 7 of the contact points 2, 3 are separated from each other.
- the fixed contact 4 of the first contact point 2 is arranged on a first contact rail 10.
- the first main contact terminal 11 of the DC contactor 1 is provided.
- the fixed contact 6 of the second contact point 3 is arranged on a second contact rail 12.
- the second main contact terminal 13 is provided.
- Adjacent to the first contact point 2, an arc quenching device 14 is arranged.
- the arc-extinguishing device 14 comprises a plurality of arc-extinguishing elements 23, at which an arc resulting from the opening of the contact points 2, 3 is stretched and extinguished. These arc extinguishing elements may for example consist of ceramic or metal.
- the lower edge of the arc quenching device 14 faces the first contact point 2.
- the arc quenching device 14 facing end portion 15 of the contact bridge 8 is formed bent. Spaced to this bent end portion 15 of the contact bridge 8, a bridging plate is arranged.
- the bridging plate is designed as a first arc guide plate 16.
- the first arc guide plate 16 is L-shaped and surrounds with its long leg a portion of the lower edge of the arc quenching device 14 and with its short leg a portion of the corresponding side of the arc quenching device 14.
- the disposed on the underside of the arc quenching device 14 leg of the arc guide 16 is so long that he in the open state of the contact bridge 8 the bent end portion 15 of the contact bridge 8 is opposite, but does not protrude into the open contact point 2.
- the contact bridge 8 and the first arc guide plate 16 are electrically isolated from each other.
- an air gap 22 is provided between the bent end 15 of the contact bridge 8 and the arc guide. Trained as the first arc guide plate 16 bridging plate is electrically connected to the fixed contact 6 of the second contact point 3.
- a kauslitze 17 is provided between the arc guide plate 16 and the contact rail 12, on which the fixed contact 6 of the second contact point 3 is arranged.
- the connecting strand 17 is provided with an insulation.
- another connection would be possible, which ensures that the arc guide plate 16 and the second contact rail 12 are at the same potential.
- a protective cover 21 is arranged in the region of the second contact point 3.
- the protective covering 21 serves to protect the components of the contactor arranged in the region of the second contact point 3 from the second switching arc which arises at the second contact point when the contact point is opened. In particular, contact with the grounded parts must be avoided.
- the protective cover 21 may be made of erosion-resistant ceramic. It is also possible to use an insulated metal element, preferably made of stainless steel or another burn-resistant metal.
- a blowing device is arranged on the contact points 2, 3 side facing away from the contact bridge 8.
- this is a permanent magnet 18.
- the permanent magnets 18 are associated with pole plates 19.
- FIG. 1 the same Contactor 1 shown in the open state. That is, above the permanent magnet 18, a further, not shown, pole plate is arranged, which covers the contact points.
- the pole plates 19 are mushroom-shaped, but may also have a different shape. Starting from the permanent magnet 18, the pole plates 19 widen up and cover the first contact point 2 and at least portions of the arc quenching device 14. In the opposite direction, the pole plates 19 taper to a kind of stem and cover only the second contact point 3.
- the pole plates 19th In the area of the contact points 2, 3 and in the area of the arc quenching device 14, a uniform blowing field is generated.
- the permanent magnet 18 is aligned such that it exerts a low force on the contact points 2, 3, which generates the first switching arc generated at the first contact point 2 in the direction of the arc quenching device 14.
- the resulting at the second contact point 3 switching arc is driven in the opposite direction.
- the pole plates are formed so that they cover only the first contact point and the arc quenching device, but not the second contact point.
- the first contact rail 10, on which the fixed contact 4 of the first contact point 2 is arranged, is extended in the direction of the arc quenching device 14, so that a second arc guide plate 20 is formed. Also, the second arc guide plate 20 surrounds a portion of the bottom of the arc quenching device 14 and extends at the opposite side of the first arc guide plate 16 of the arc quenching device 14 upwards.
- a Kapton film is laid in the DC contactor 1, which separates the current-carrying components from the ground-connected components.
- Fig. 1 only the internal structure of the DC contactor 1 is shown. This internal structure is surrounded by a housing.
- the housing is designed in two-shell shell technology.
- the DC contactor 1 thus has a very simple structure, whereby a low production cost is possible. Since only one arc quenching device is necessary, the DC contactor 1 can be made very compact.
- a removable insert 24 is disposed in the housing.
- the insert 24 covers only a portion of the arc quenching device 14.
- arc extinguishing elements 23 are connected to the insert 24, for example, glued or sprayed.
- the insert 24 is, for example, by a Klipsver- Bond connected to the housing and therefore can be easily removed. Since the arc extinguishing elements 23 are connected in this area with the insert, they are taken out with. This allows access to the contact points 2, 3 and to the contact rails 10, 12, for inspection purposes, for example.
- the contact bridge 8 is moved.
- the contact bridge 8 can thus be brought from a closed position in which the contact points 2, 3 are closed and the fixed contacts 4, 6 and the movable contacts 5, 7 of the two contact points, are brought into an open position.
- the open position the fixed contact 4 and the movable contact 5 of the first contact point 2 and the fixed contact 6 and the movable contact 7 of the second contact point 3 are separated by an air gap.
- the contact bridge 8 can of course be returned from the open position to the closed position.
- the protective covering 21 is therefore arranged in the region of the second contact point 3.
- the protective covering 21 is preferably arranged between the second contact point 3 and the connecting strand 17 in order to protect the connecting strand 17 from the second switching arc.
- the first switching arc at the first contact point 2 is blown upwards by the permanent magnet 18 and the associated pole plates 19, ie in the direction of the arc quenching device 14.
- the right arc base point of the first switching arc jumps over from the contact bridge 8 to the arc guide plate 16.
- the second switching arc which is formed at the second contact point 3, is thereby bridged and thus extinguished.
- the permanent magnet 18 and the pole plates 19 the first switching arc is further blown in the direction of the arc quenching device 14.
- the arc base points of this first switching arc run along the arc guide plates 16, 20. As a result, the first switching arc is widened, pressed into the arc-extinguishing device 14 and extinguished there.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL11723249T PL2596511T3 (en) | 2010-07-22 | 2011-05-12 | Unidirectional switching dc-contactor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010031907A DE102010031907B9 (en) | 2010-07-22 | 2010-07-22 | Unidirectional switching DC contactor |
PCT/EP2011/002361 WO2012010227A1 (en) | 2010-07-22 | 2011-05-12 | Unidirectionally switching dc contactor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2596511A1 true EP2596511A1 (en) | 2013-05-29 |
EP2596511B1 EP2596511B1 (en) | 2015-07-08 |
Family
ID=44278580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11723249.6A Active EP2596511B1 (en) | 2010-07-22 | 2011-05-12 | Unidirectional switching dc-contactor |
Country Status (9)
Country | Link |
---|---|
US (1) | US9224559B2 (en) |
EP (1) | EP2596511B1 (en) |
CN (1) | CN103038847B (en) |
DE (1) | DE102010031907B9 (en) |
DK (1) | DK2596511T3 (en) |
ES (1) | ES2543748T3 (en) |
PL (1) | PL2596511T3 (en) |
RU (1) | RU2539360C2 (en) |
WO (1) | WO2012010227A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014001730A1 (en) * | 2014-02-08 | 2015-08-13 | Ellenberger & Poensgen Gmbh | switching system |
DE102014004455B4 (en) * | 2014-03-27 | 2021-10-07 | Schaltbau Gmbh | Electrical switching device with improved arc extinguishing device and method for manufacturing such switching device |
DE102014004843A1 (en) | 2014-04-02 | 2015-10-08 | Schaltbau Gmbh | DC contactor with additional switching capability for AC loads and polarity against the preferred direction of current |
CN103943430A (en) * | 2014-04-03 | 2014-07-23 | 西安交通大学 | Combined type universal air circuit breaker for both alternating-current circuit and direct-current circuit and arc extinction method of combined type universal air circuit breaker |
DE102014012454B4 (en) | 2014-08-21 | 2023-06-22 | Schaltbau Gmbh | Contactor with fast switching properties |
PL3293748T3 (en) * | 2016-09-09 | 2020-11-16 | Microelettrica Scientifica S.P.A. | Improved contactor device for high current switching applications |
FR3095890B1 (en) * | 2019-05-06 | 2021-07-16 | Schneider Electric Ind Sas | Limiter pole for electric switch and DC electric switch comprising such a limiter pole |
CN114068225A (en) * | 2021-09-30 | 2022-02-18 | 浙江德力西国际电工有限公司 | Multi-control switch and multi-control circuit system |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
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DE898019C (en) * | 1931-10-27 | 1953-11-26 | Siemens Ag | Loeschblechpaket assembly for switch |
CH140851A (en) * | 1951-04-08 | 1930-06-30 | Siemens Ag | Device for extinguishing the arc at electrical interruption points using compressed air. |
DE1915972U (en) * | 1962-12-06 | 1965-05-20 | Stotz Kontakt Gmbh | ARC EXTINGUISHING DEVICE WITH PERMANENT MAGNET. |
DE1962559U (en) * | 1966-10-22 | 1967-06-22 | Siemens Ag | ARC EXTENSION DEVICE FOR DC SWITCHING DEVICES. |
US3483343A (en) * | 1966-11-07 | 1969-12-09 | Gen Electric | Electric circuit breaker with special arc extinguishing structure |
US4080520A (en) * | 1971-07-10 | 1978-03-21 | Siemens Aktiengesellschaft | Circuit breaker with arc quenching baffle arrangement |
SU532902A1 (en) * | 1975-03-20 | 1976-10-25 | Предпритие П/Я Г-4847 | Mostikova contact system |
DE2826243A1 (en) * | 1978-06-15 | 1979-12-20 | Bbc Brown Boveri & Cie | Switch with arc extinguishing chamber - has fixed contacts on conducting plates and movable contacts on levers connected together |
US4766273A (en) * | 1985-06-17 | 1988-08-23 | Eaton Corporation | High current double-break electrical contactor |
US5004874A (en) * | 1989-11-13 | 1991-04-02 | Eaton Corporation | Direct current switching apparatus |
US5138122A (en) * | 1990-08-29 | 1992-08-11 | Eaton Corporation | Bi-directional direct current switching apparatus having arc extinguishing chambers alternatively used according to polarity applied to said apparatus |
US5130504A (en) * | 1990-08-29 | 1992-07-14 | Eaton Corporation | Bi-directional direct current switching apparatus having bifurcated arc runners extending into separate arc extinguishing chambers |
JP3321963B2 (en) * | 1994-02-22 | 2002-09-09 | 株式会社デンソー | Plunger type electromagnetic relay |
EP0980085B1 (en) * | 1998-08-13 | 2006-11-22 | Siemens Aktiengesellschaft | Power circuit breaker with blast coil operated by the arc |
RU2149475C1 (en) * | 1999-06-01 | 2000-05-20 | Закрытое акционерное общество "ЗЭТА" | Arc-control member |
US6064024A (en) * | 1999-06-25 | 2000-05-16 | Eaton Corporation | Magnetic enhanced arc extinguisher for switching assemblies having rotatable permanent magnets in housings mounted to fixed contacts |
DE20105432U1 (en) * | 2001-03-28 | 2002-09-26 | Schaltbau Gmbh | Blow in AC operation |
RU2235381C2 (en) * | 2002-09-09 | 2004-08-27 | Открытое акционерное общество "Всероссийский научно-исследовательский проектно-конструкторский и технологический институт релестроения с опытным производством" | Contact arc-suppressing device |
CN2575825Y (en) * | 2002-09-30 | 2003-09-24 | 永济电机厂 | Permanent magnetic operating device for switch |
DE102006035844B4 (en) * | 2006-08-01 | 2008-06-19 | Schaltbau Gmbh | Contactor for DC and AC operation |
RU2324996C1 (en) * | 2006-10-25 | 2008-05-20 | Сергей Иванович Цыбульников | Tsybulnickov's electromagnetic unit |
KR100910525B1 (en) * | 2007-09-03 | 2009-07-31 | 엘에스산전 주식회사 | Arc extinguishing device of manual motor starter |
CN201413780Y (en) * | 2009-04-07 | 2010-02-24 | 李建新 | Bipolar strong arc extinguishing DC contactor |
-
2010
- 2010-07-22 DE DE102010031907A patent/DE102010031907B9/en not_active Expired - Fee Related
-
2011
- 2011-05-12 WO PCT/EP2011/002361 patent/WO2012010227A1/en active Application Filing
- 2011-05-12 DK DK11723249.6T patent/DK2596511T3/en active
- 2011-05-12 US US13/811,646 patent/US9224559B2/en active Active
- 2011-05-12 CN CN201180035865.6A patent/CN103038847B/en active Active
- 2011-05-12 PL PL11723249T patent/PL2596511T3/en unknown
- 2011-05-12 EP EP11723249.6A patent/EP2596511B1/en active Active
- 2011-05-12 RU RU2012157657/07A patent/RU2539360C2/en active
- 2011-05-12 ES ES11723249.6T patent/ES2543748T3/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2012010227A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2596511B1 (en) | 2015-07-08 |
RU2012157657A (en) | 2014-08-27 |
CN103038847A (en) | 2013-04-10 |
CN103038847B (en) | 2015-09-30 |
PL2596511T3 (en) | 2015-12-31 |
DE102010031907B9 (en) | 2013-01-17 |
DK2596511T3 (en) | 2015-08-24 |
WO2012010227A1 (en) | 2012-01-26 |
DE102010031907B3 (en) | 2011-11-17 |
ES2543748T3 (en) | 2015-08-21 |
US20130292359A1 (en) | 2013-11-07 |
US9224559B2 (en) | 2015-12-29 |
RU2539360C2 (en) | 2015-01-20 |
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