EP2095386A1 - Schaltkammer-baugruppe und schaltgerät - Google Patents
Schaltkammer-baugruppe und schaltgerätInfo
- Publication number
- EP2095386A1 EP2095386A1 EP07846686A EP07846686A EP2095386A1 EP 2095386 A1 EP2095386 A1 EP 2095386A1 EP 07846686 A EP07846686 A EP 07846686A EP 07846686 A EP07846686 A EP 07846686A EP 2095386 A1 EP2095386 A1 EP 2095386A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pusher
- chamber assembly
- switching chamber
- switching
- contact bridge
- 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
- 239000002184 metal Substances 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 2
- 210000001331 nose Anatomy 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract 2
- 238000007906 compression Methods 0.000 abstract 2
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
Classifications
-
- 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
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
- H01H71/0214—Housing or casing lateral walls containing guiding grooves or special mounting facilities
-
- 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
Definitions
- the invention relates to a switching chamber assembly, in particular for a circuit breaker, with a fixed contact pieces assignable, movable contact bridge, with a contact pressure spring and with a contact bridge guide, which is formed by a pusher having an extension with a slot into which the associated contact bridge can be inserted, wherein the contact bridge superior projection is inserted into the contact pressure spring and the pusher with the contact bridge in a receiving opening is displaceable and latched, and with two opposite side walls, according to the preamble of claim 1, and a switching device according to claim 8.
- Circuit breakers in particular motor protection switches, have per phase or per pole a double contact point, in which two fixed contacts are present, which are bridged with a contact bridge, are attached to the two movable contact pieces.
- the double contact point are each associated with arc extinguishing chambers into which the two arcs travel during a turn-off action and are deleted therein.
- the contact points are located in the lower part of the circuit breaker, while other components and assemblies, such as a mechanical twist grip, a switch lock, an electromagnetic and a thermal release are located in the top.
- the electromagnetic trip device will break the contact bridge very quickly.
- the switch lock is unlatched, whereby a lever for permanent opening can act on the contact bridge.
- the Entklinking of the switching mechanism and the action of the reversing lever take place in the Usually delayed in time to strike the contact bridge by the electromagnetic release.
- a circuit breaker in the lower part by parallel to the side walls extending partitions three pole chambers are formed, wherein in each pole chamber a fixed contact pieces assignable, movable Kon-. is arranged with a contact pressure spring and a contact bridge guide, which is formed by a pusher having an extension with a slot into which the associated contact bridge can be inserted, wherein the contact bridge superior projection can be inserted into the contact pressure spring, and wherein the Pusher with the contact bridge in a guide formed in the partitions separating the Polhuntn slidably and can be latched.
- the electrical and thermal insulation between the individual poles happens only through the rigid partitions between the pole chambers.
- the object of the invention is to provide a switching chamber assembly which has improved insulation from the switching chambers of the other poles and achieves faster extinction of the arc occurring in a switching operation, thereby allowing reliable switching of even large loads or short-circuit currents, and easy to assemble.
- a bottom part which integrally connects them in a central region extends perpendicularly to the side walls, whereby the receiving opening for the pusher is formed in the middle region and closed toward the bottom, and whereby prechamber spaces are formed in the side regions adjoining the receiving space outside the receiving space with its broad side on the bottom part fitting guide plate are closed to the ground. Furthermore, open pockets for receiving blower plates are formed in the side walls in the region of the pre-chamber spaces towards the bottom.
- metallic blown sheets can be inserted, which in a manner known per se, the movement of the arc from the pre-chamber in the, as known in the art, to the antechamber. accelerated quenching chambers. Furthermore, the bellows inserted in the pockets improve the stability of the prechamber sidewalls, and they also contribute to an improved dissipation of heat from the pre-chamber spaces, whereby higher switching powers per pole can be achieved.
- the structure of the switching chamber assembly according to the invention further ensures that the Vorschtrenchsupplementary substance remain flexible - so they can give in on the occurrence of a arc accompanying pressure in the antechamber and thus absorb the pressure - and yet the antechambers to the bottom are completed - namely by the Guide plate, which leaves the Vorhuntrichitant movable - and thereby improved thermal and electrical insulation is achieved.
- the side walls are extended in the middle region on the side facing the baffle plate, so that thereby the receiving opening for the pusher has a bulge which extends the displacement path of the pusher.
- the pusher is thus a longer displacement in the opening direction available before it abuts the bottom of the receiving opening and rebounds from there or is pressed back into the closing direction due to the restoring force of the contact pressure spring.
- the advantage that is achieved with this is a reduced contact bounce. This is usually due to the fact that the contact bridge is pressed back in the event of a trip after opening back to the closed position, before by additional measures in the switching device, for example, by the aforementioned action of a reversing lever, a permanent open position of the contact point is achieved.
- the invention according to the extended displacement more time is available before the contact bridge returns to the closed position. It can thus be achieved that the additional measures already mentioned become effective before the contact bridge has completely reached the closed position, so that contact bouncing can be avoided.
- the additional measures mentioned may be a reversing lever, which interacts with a mechanical switching lock and acts on the pusher after the latch has been unlocked to permanently open the contact bridge. Due to the mechanical inertia of the switching mechanism and the deflection lever occurs this effect with a time delay to the impact of the contact point by an electromagnetic Schlagankersystem.
- sheet metal lugs are integrally formed on the guide plate in the region of the pockets and bent upwards perpendicular to the broad side of the guide plate and inserted into the pockets.
- integral with the baffle blown sheets are formed in the region of the pre-chamber spaces in the side walls.
- This embodiment of the invention allows a simple, modular structure, which requires only a few parts and its assembly can be easily automated.
- the baffle extends on the narrow sides of the pre-chamber spaces in subsequent fire extinguishing chambers. That connect to the narrow sides of the antechamber extinguishing chambers, usually with stacked splitter stack, is known in principle in the art.
- the embodiment of the guide plate according to the invention makes it possible, while maintaining the simple construction and avoiding additional components, to guide the arc from its point of origin in the pre-chamber into the extinguishing chambers.
- a particularly advantageous embodiment of the pusher provides that this has an approximately rectangular or cuboid base body, on one surface of the extension is formed, and on the opposite surface of a striker is provided.
- On the pusher locking lugs can be provided in an advantageous manner, which engage in grooves which extend in the side wall of the receiving space in the direction of movement of the pusher and thereby guide the pusher.
- the grooves have a stop for the latching lugs of the pusher.
- a switching chamber assembly that for each pole such a completely prefabricated and can be used as a self-contained subsystem in the assembly of the switching device in the switchgear housing. Accordingly, in a switching device according to the invention, a separate, inventive switching chamber assembly is installed in a housing for each pole.
- a pole chamber delimited by parallel side walls with a switching chamber assembly according to the invention inserted therein is provided for each pole in a housing.
- the switching chamber assembly according to the invention is present as a prefabricated subsystem, the assembly is very simple.
- a switching device also has a derailleur, which acts in an advantageous embodiment on a lever with a, the number of poles corresponding number of finger-like extensions lever arm so acting in the case of triggering the pusher each switching chamber assembly by a corresponding with him finger-like Extension of the reversing lever is acted upon in the opening direction of the contact points of the respective pole, so that at the same time at each pole, the contact points are kept permanently open.
- a derailleur acts in an advantageous embodiment on a lever with a, the number of poles corresponding number of finger-like extensions lever arm so acting in the case of triggering the pusher each switching chamber assembly by a corresponding with him finger-like Extension of the reversing lever is acted upon in the opening direction of the contact points of the respective pole, so that at the same time at each pole, the contact points are kept permanently open.
- FIG. 1 shows a switching chamber assembly according to the invention, with associated arc splitter stacks
- FIG. 2 shows an exploded view of a switching chamber assembly according to the invention when installed in a switching device
- Figure 3 a plan view of the opened lower part of a service switching device with a switching chamber assembly inserted into the middle pole chamber, as well
- Figure 4 a second embodiment of a switching chamber assembly according to the invention.
- FIGS. 1 to 4 identical or equivalent elements or assemblies are designated by the same reference numerals.
- FIG. 1 shows a switching chamber assembly 10 according to the invention with on their narrow sides 12,14 associated splitter stacks 16, 18.
- Figure 2 shows an exploded view of the structure and interaction of the items and the installation of the switching chamber assembly 10 in the lower half of a housing 4 Switching device 2.
- the switching chamber assembly 10 has two parallel side walls 20 and 22. In a central region 24, the side walls 20, 22 are integrally connected by a bottom part 26, so that the switching chamber assembly 10 in the central region 24 through the bottom part 26 down, closed to the ground.
- the side walls 20, 22 form a receiving space 42 with a guide for a pusher 28.
- This has a rectangular base body 30.
- an extension 34 is integrally formed with a slot 36.
- a contact bridge 38 is inserted, and the contact bridge 38 superior projection 34 is inserted into a contact pressure spring 40.
- the pusher 28 is displaceable with the Köntaktmaschine 38 in the receiving space 42 perpendicular to the ground.
- a striker 50 is present on the second narrow side 48 of the rectangular base body 30 of the pusher 28 .
- This can, as in the present embodiment, be integrally formed on the rectangular base body 30. But it can also, as in another embodiment conceivable, be arranged in a central bore within the base body 30 in the longitudinal direction of the pusher 28 and relative to this displaceable.
- pre-chamber spaces 56, 58 are formed by the side walls 20, 22. These are open on the opposite side of the ground.
- the pre-chamber spaces 56, 58 can be closed by a guide plate 60 lying on the bottom part 26 with its broad side.
- the baffle 60 has laterally integrally formed metal lugs 66,68, which are bent up perpendicular to the broad side of the baffle 60.
- the metal lugs 66,68 are dimensioned and spaced from each other so that they can be inserted into the pockets 62, 64 and then act as Blasbleche when the baffle 60 with its broad side against the outside of the bottom part 26 for bottom-closing the prechamber 56, 58 is pressed.
- the guide plate 60 extends laterally beyond the narrow sides of the pre-chamber spaces 56, 58 out into the area of the arc splitter stacks 16, 18 assigned thereto.
- FIG. 3 shows the perspective view of the lower housing half 4 of a switching device 2 according to the invention.
- Two inner polar chambers 78, inside the switching device 2 are provided by two internal double walls 70, 72 which run parallel to the housing side walls 74, 76. 80, 82 formed.
- a switching chamber assembly 10 according to FIG. 1 is inserted in the middle pole chamber 80.
- these are doubly insulated, on the one hand by the side walls 20, 22 of the interrupter assembly 10 and on the other by the double walls 70, 72. It can be seen in FIG.
- the blower plates integrated in the side walls 20, 22 inside the pockets 62, 64 can sustainably support and accelerate the arc migration.
- a switching device 2 according to the invention with switching chamber assemblies 10 according to the invention is modular and can be mounted very effectively with a few steps.
- the switching chamber assembly 10 of Figure 1 can be prepared as a completely prefabricated assembly.
- each pole is assigned its own switching chamber assembly 10. Because of this, the individual switching chamber assembly is very small and compact and can be easily picked up and positioned by automatic handling devices.
- FIG. 4 shows a further embodiment of a switching chamber assembly according to the invention.
- This differs from that shown in FIG. 1 in that the side walls 20, 22 in the central region 24 on the side facing the baffle 60 are extended, so that the receiving opening for the pushbutton thereby extends the displacement of the pusher 84 has.
- the baffle 60 has a bulge 86, which corresponds to the bulge 86 of the receiving space.
- the guide plate (60) closes the antechamber spaces (56, 58) towards the bottom, Inside the receiving space extended by the bulge 84, the push-piece 28 is now provided with an extended path of movement.
- the time is extended until it strikes the bottom part 26 after the impact of the contact point and is then pressed by the restoring force of the contact pressure spring back in the closing direction. As a result, the contact bounce can be reduced or even prevented.
- a switching device in whose pole chambers switching chamber assemblies are used in the embodiment of FIG 4, have at the bottom of the respective pole chamber on a bulge 84 of the receiving space and the bulge 86 of the baffle corresponding bulge, so that the switching chamber assembly with the bulge 84 of the receiving space and the bulge 86 of the baffle is received and held in this recess at the bottom of the pole chamber.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006055539 | 2006-11-24 | ||
DE102007054426A DE102007054426B4 (de) | 2006-11-24 | 2007-11-13 | Schaltkammer-Baugruppe und Schaltgerät |
PCT/EP2007/010030 WO2008061702A1 (de) | 2006-11-24 | 2007-11-20 | Schaltkammer-baugruppe und schaltgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2095386A1 true EP2095386A1 (de) | 2009-09-02 |
EP2095386B1 EP2095386B1 (de) | 2014-06-04 |
Family
ID=39326608
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07846686.9A Active EP2095386B1 (de) | 2006-11-24 | 2007-11-20 | Schaltkammer-baugruppe und schaltgerät |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2095386B1 (de) |
CN (1) | CN101617379B (de) |
DE (1) | DE102007054426B4 (de) |
WO (1) | WO2008061702A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010005345B4 (de) | 2010-01-21 | 2022-04-21 | Abb Schweiz Ag | Elektrisches Schaltgerät in modularer Bauweise |
DE102012015247A1 (de) | 2012-08-01 | 2014-02-20 | Abb Ag | Schaltkammer-Baugruppe und Schaltgerät |
US9659726B2 (en) | 2013-09-13 | 2017-05-23 | Siemens Aktiengesellschaft | Switching device with improved tripping action in the event of a short circuit |
DE202015100926U1 (de) | 2015-02-26 | 2015-03-10 | Abb Technology Ag | Elektrisches Schaltgerät in modularer Bauweise |
CN107818896A (zh) * | 2016-09-12 | 2018-03-20 | 浙江正泰电器股份有限公司 | 断路器的灭弧结构 |
CN109285735B (zh) * | 2018-10-25 | 2023-11-21 | 嘉兴弘博电气有限公司 | 具有互联通信口桥接结构的智能空气开关 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19540972B4 (de) * | 1995-11-03 | 2005-05-04 | Moeller Gmbh | Strombegrenzendes Kontaktsystem mit Doppeltunterbrechung für Niederspannungs-Schutzschalter |
DE19806944C1 (de) * | 1998-02-19 | 1999-06-24 | Goerlitz Esg Gmbh | Selbstschalter, insbesondere Niederspannungs-Schutzschalter |
DE19818058C2 (de) * | 1998-04-22 | 2000-12-14 | Siemens Ag | Schaltgerät mit einer Schaltkammer-Baugruppe |
DE19916988A1 (de) * | 1999-04-15 | 2000-10-19 | Moeller Gmbh | Niederspannungsschaltgerät mit Bimetallauslöser |
DE19935661A1 (de) * | 1999-07-29 | 2001-02-01 | Abb Patent Gmbh | Schaltkontaktanordnung für einen Leistungsschalter |
DE10356271B4 (de) * | 2003-11-28 | 2008-02-14 | Siemens Ag | Schaltgerät |
-
2007
- 2007-11-13 DE DE102007054426A patent/DE102007054426B4/de not_active Expired - Fee Related
- 2007-11-20 EP EP07846686.9A patent/EP2095386B1/de active Active
- 2007-11-20 WO PCT/EP2007/010030 patent/WO2008061702A1/de active Application Filing
- 2007-11-20 CN CN2007800437030A patent/CN101617379B/zh active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2008061702A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2095386B1 (de) | 2014-06-04 |
WO2008061702A1 (de) | 2008-05-29 |
CN101617379A (zh) | 2009-12-30 |
DE102007054426B4 (de) | 2010-08-05 |
DE102007054426A1 (de) | 2008-05-29 |
CN101617379B (zh) | 2012-02-29 |
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