EP3224852B1 - Schaltgerät mit einem antrieb zum betriebsmässigen schalten und mit einem schnellauslöser zum trennen eines strompfads in dem schaltgerät - Google Patents
Schaltgerät mit einem antrieb zum betriebsmässigen schalten und mit einem schnellauslöser zum trennen eines strompfads in dem schaltgerät Download PDFInfo
- Publication number
- EP3224852B1 EP3224852B1 EP15800783.1A EP15800783A EP3224852B1 EP 3224852 B1 EP3224852 B1 EP 3224852B1 EP 15800783 A EP15800783 A EP 15800783A EP 3224852 B1 EP3224852 B1 EP 3224852B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching
- stop
- movable contact
- switching device
- current path
- 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.)
- Active
Links
- 230000033001 locomotion Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000005520 electrodynamics Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process 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
- 230000006870 function Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/546—Contact arrangements for contactors having bridging contacts
-
- 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
- H01H1/2008—Facilitate mounting or replacing contact bridge and pressure spring on carrier
-
- 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
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2463—Electromagnetic mechanisms with plunger type armatures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
- H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
- H01H89/08—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device with both devices using the same contact pair
-
- 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
Definitions
- the invention relates to a switching device for switching on and off of a current through a current path, with at least one fixed contact and at least one moving contact, wherein the moving contact for closing and separating the current path relative to the fixed contact is movable with a drive for operationally moving a jumper between a Closed position and an open position, wherein the moving contact in the closed position with the fixed contact closes the current path, and with a quick release for disconnecting the current path in the event of a short circuit or overload.
- Such switching devices with corresponding, usually electromagnetic drives are used for example in motor starters. These should be suitable for the operational switching of a load, switching off an overload and switching off in the event of a short circuit.
- two separate switching devices namely a motor protection switch can be used as a circuit breaker and a contactor as a load switch to achieve this functionality.
- motor starters are known in which the switching and protective function is integrated in a switching device. As a rule, they have a hand-operated, mechanical switch lock.
- WO 2014/023326 A1 is a switching device or a drive for a switching device for a compact and remotely controllable motor starter described with the operational switching of the load, switching off the overload and the switching off of short circuits with only one device to be realized.
- the problem with switching off short circuits is the need to open the closed contacts very quickly and permanently, so that a safe extinguishing of the arc is ensured, and a re-ignition of the arc and welding of the contacts can be avoided.
- the drive has for this purpose a bipolar electromagnetic drive unit with a movable armature and two stationary magnetic coils for reversible movement of the armature between two permanent magnetically stabilized anchor layers, wherein by selective Excitation of the first magnetic coil, a moving contact is movable into the closed position and by selective energization of the second magnetic coil of the moving contact within a permissible for a short circuit in the current path Maximalabschaltzeit in the open position is movable.
- Electromagnetic actuators that are used for switching on and off have the disadvantage that they have a comparatively large, moving mass, which is necessary for the switch-on. Due to the inertia, however, such a drive has a correspondingly long turn-off time. The switch-off times that can be achieved in this way may be too long to safely switch off a short circuit.
- An object of this invention is to provide a switching device for turning on and off a current through a current path with a quick release for disconnecting the current path, with which the switching off of an overload and the switching off of short circuits, regardless of a turn-off time of the drive for operational switching, fast and safe feasible and which allows a compact, space-saving design.
- the switching device for switching on and off a current through a current path has at least one fixed contact and at least one moving contact, wherein the moving contact for closing and separating the current path relative to the fixed contact is movable.
- a contact system may have a single contact pair. It is preferably carried out in a double-interrupting manner, wherein two moving contacts are connected in particular via a moving contact carrier in order to be movable relative to two fixed contacts of the current path.
- the terms moving contact and fixed contact will be used without going into the possibility of an embodiment with a double-break contact system, since this is familiar to the person skilled in the art.
- a moving contact carrier with two moving contacts is covered by the term moving contact.
- the switching device further comprises a drive for operationally moving a switching bridge between a closed position and an open position, the moving contact in the closed position with the fixed contact closes the current path, so that the drive is also generally referred to as a drive for operational switching of the switching device.
- the switching device according to the invention on a quick release for disconnecting the current path in the event of a short circuit or overload.
- Both the drive for operational switching of the switching device, as well as the drive of the quick release are preferably electromagnetic drives.
- the moving contact is movably guided along the switching bridge between a first stop and a second stop and is rigidly coupled to an armature of the quick release.
- An advantage of the switching device according to the invention is that the moving contact movably guided along the switching bridge can be separated from the fixed contact in the closed position of the switching bridge in the event of a short circuit by the quick release.
- the person skilled in the art knows that, in the event of a short circuit, the lifting of the moving contacts is generally initially caused by the electrodynamic lifting forces and the quick release preferably prevents the moving contacts from falling back and further removes them from the fixed contacts. This exploitation of the known electrodynamic lift-off forces when switching off short-circuit currents is not necessarily described here in connection with the triggering of the quick release.
- the rigid coupling between the quick release and the moving contact ensures, moreover, advantageous for accelerated release of the quick release, as an air gap in the quick release is so already reduced due to the electrodynamic lift. Furthermore, the rigid coupling allows resetting the permanently open after a trip moving contact with a simultaneously advantageously space-saving design and / or arrangement of the quick release and / or the drive for operational switching.
- the armature of the Quick release is biased by means of an impression spring, so that the moving contact is biased by the impression spring in the direction of the first stop of the switching bridge.
- the impression spring of the armature simultaneously acts as a contact pressure spring of the moving contact. In the closed position of the switching bridge of biased in the direction of the first stop moving contact with the fixed contact closes the current path, so that the impression spring of the armature acts simultaneously as a contact pressure spring of the moving contact. A separate contact pressure spring is thereby advantageously saved.
- the first lifting of the moving contacts is generally caused by the electrodynamic lifting forces before the quick release prevents the moving contact from falling back and moving it further in the direction of the second stop.
- a holding device to be provided on the switching bridge in order to hold the moving contact, which is separated by the quick release, against the second stop.
- the holding device preferably has a permanent magnetic system to keep the moving contact after triggering the quick release with a magnetic force against a spring force of the impression spring on the second stop, wherein an amount of magnetic force is greater than an amount of spring force. Since the moving contact is brought by the quick release in direct contact with the second stop, the magnetic force of the holding device can advantageously act without air gap on the moving contact.
- the at least one moving contact is arranged on a moving contact carrier made of a magnetically conductive material, in particular attached thereto.
- the moving contact carrier consists of a clad material with a first layer of a copper material and a second layer of a ferrous material.
- resetting of the moving contact takes place after a triggering of the quick release by a switch-off operation of the drive for the operational movement of the switching bridge. This saves a separate mechanism for resetting the quick release after a trip.
- a counter-stop preferably limits the range of movement of the moving contact in a switch-off of the drive, the moving contact reaches the counter-attack only after a previous triggering of the quick release, so after disconnecting the current path through the quick release.
- the counter stop does not affect the movement of the moving contact.
- Particularly preferred forms a core of the quick release with the anchor counter-attack. The movement of the moving contact is thus limited in particular by the fixed contact on the one hand and, after triggering the quick release, by the counter-stop on the other hand to a range of motion.
- the open position of the switching bridge is achieved due to the counter-attack only after previous release of the moving contact of the holding device.
- a greater resultant force than the holding force of the holding device is necessary.
- This resulting force is composed of a force of the contact pressure spring and a force of the drive for operationally moving the switching bridge together.
- the force of the drive to operate the switching bridge is usually provided by an impression spring.
- FIG. 1 is a simplified schematic representation of the switching device according to the invention with an exemplary structure shown.
- the switching device for switching on and off of a current through a current path 10 has for this purpose two fixed contacts 11, 12 which cooperate with two moving contacts 14, 15 on a moving contact carrier 16 for closing and disconnecting the current path 10.
- An electromagnetic drive 1 is used for operationally moving a switching bridge 17 between a closed position and an open position, wherein the Bewegitchisme 16 is guided by the switching bridge 17, which will be discussed in more detail in connection with the following figures.
- a quick release 2 for disconnecting the current path 10 in the event of a short circuit or overload is also shown only schematically, the exact structure and the functions will be described below with reference to the other figures.
- FIG. 2 shows a detailed representation of a portion of the switching device in an off state
- FIGS. 3A and 3B show detailed representations of portions of the switching device in an on state.
- the electromagnetic drive 1 for operationally moving a switching bridge 17 is simplistic, only a drive armature 1 is shown, by an unillustrated impression spring in the direction of in the FIG. 2 shown biased position and at a switch-on by a solenoid, not shown in the direction of a in the FIG. 3A shown position is moved.
- the construction of a corresponding contactor drive 1 is well known to those skilled in the art.
- the drive 1 is provided for operationally moving the switching bridge 17 between a closed position and an open position, wherein the switching bridge 17 in the FIG. 2 is shown in the open position, in which the moving contacts 14, 15 are arranged away from the fixed contacts 11, 12, the current path 10 is thus separated.
- the moving contacts 14, 15 are arranged at opposite ends of the moving contact carrier 16, which in turn is movably guided along the switching bridge 17 between a first stop 18 and a second stop 19.
- the moving contacts 14, 15 are biased by a contact pressure spring 5 against the first stop 18, which will be discussed in more detail later in connection with the description of the quick release 2.
- the electromagnetic drive 1 is activated and moves the switching bridge 17 in its closed position, which in the FIG. 3A is shown.
- the movement of the switching bridge 17 causes a contacting of the moving contacts 14, 15 with the fixed contacts 11, 12, so that the current path 10 is closed.
- the biased by the contact pressure spring 5 Bewegizomie 16 is no longer at the first stop 18 of the switching bridge 17 at.
- An operational switch-off is carried out accordingly by the drive 1 is deactivated, so that the unillustrated impression spring of the drive 1, the switching bridge 17 moves back into the open position.
- the first stop 18 of Switching bridge 17 takes the arranged on the Bewegromeesel 16 moving contacts 14, 15 with and separates them thereby from the fixed contacts 11, 12.
- the resulting arcs are, as in connection with FIG. 1 described, led to corresponding extinguishing systems 21.
- the quick release 2 is arranged opposite the drive 1 for operational switching, so that the current path 10 runs between the drive 1 and the quick release 2.
- the quick release 2 for disconnecting the current path 10 in the event of a short circuit or overload has a core 9, a yoke 3, an armature 4 and a magnet coil 7.
- the armature 4 is connected via a rigid coupling 8 with the moving contacts 14, 15 on the moving contact carrier 16. This makes it possible that the quick release 2 separates the current path 10, while the switching bridge 17 in the closed position according to FIG. 3A stands.
- the spring force is applied via the armature and the rigid connection 8 transmitted to the Beweg. réelle 16 with the Beweg.en 14, 15.
- FIG. 3B is the switching bridge 17 in the closed position according to FIG. 3A shown enlarged.
- the moving contact carrier 16 is guided between the first stop 18 and the second stop 19 along the switching bridge 17.
- a holding device 20 is provided to hold the separated by the quick release 2 moving contacts 14, 15 to the second stop 19.
- the triggering of the quick release 2 will be described below with reference to FIGS. 4A and 4B further explained.
- a current flowing through the solenoid 7 trip current causes the triggering of the quick release 2, so that the armature 4 is attracted and via the rigid connection. 8 the moving contacts 14, 15 are moved on the moving contact carrier 16 away from the fixed contacts 11, 12.
- the switching bridge 17 is still in the closed position, the current path 10 is separated by the triggered quick release 2.
- the actual loosening of the moving contacts 14, 15 takes place as a rule by the action of electrodynamic lifting forces, before the quick release 2, the moving contacts 14, 15 away from the fixed contacts 11, 12 away, to avoid reignition of the switching arc or welding of the contacts.
- the moving contacts 14, 15 on the BewegCountley 16 are after triggering on the second stop 19 of the switching bridge 17, as in particular in the enlarged view according to FIG. 4B is recognizable.
- the exciting current through the solenoid coil 7 decreases, so that the impression spring 5 of the armature 4, the moving contacts 14, 15 could move back toward the fixed contacts 11, 12.
- the holding device 20 is provided on the second stop 19 of the switching bridge 17, which prevents a loosening of the moving contacts 14, 15 with the Bewegromedozens 16 of the stop 19.
- the moving contact carrier 16 is in particular made of a magnetically conductive material, preferably of a plated material with a first layer 22 of a copper material and a second layer 23 of a ferrous material.
- the triggered quick release 2 can be particularly easy to reset to its initial state by the drive 1, the switching bridge 17 moves from the closed position to the open position.
- the reset operation of the quick release 2, the in FIG. 5 is shown takes place So advantageous by a switch-off, as previously in connection with the Figures 2 . 3A and 3B has been described.
- the moving contacts 14, 15 must be solved on the BewegCountées 16 of the second stop 19 with the holding device 20.
- the movement of the moving contacts 14, 15 is limited to the Bewegromedozens 16 in the direction of the open position of the switching bridge 17 by a counter-stop 6, which is arranged so that the open position of the switching bridge 17 is not yet reached.
- the counter-stop 6 causes a release of the Beweg.dozenss 16 of the second stop 19, so that the switching bridge 17 can reach the open position again.
- the effect of the counter-stop 6 is given only after triggering the quick release 2, since the Beweg. relies only in this case by the holding device 20 to the second stop 19.
- the switching bridge 17 In the FIG. 5 exactly the position of the switching bridge 17 is shown, in which the moving contacts 14, 15 have reached their defined by the stop 6 end position.
- the stop 6 is realized in the illustrated embodiment in the form of a core 9 of the quick release 2, to which the armature 4 abuts. However, the stop 6 can also be realized in other ways, for example by a separate stop outside the switching bridge 17 against which the moving contact carrier 16 is moved.
- the switching bridge 17 has in the in FIG. 5 shown position their open position (see. FIG.
- the switching device reaches again in the FIG. 1 shown position with the switching bridge 17 in the open position and the BewegCounten 14, 15, which are biased by the contact pressure spring 5 against the first stop 18 of the switching bridge 17. The switching device is thus ready for another switch-on.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL15800783T PL3224852T3 (pl) | 2014-11-28 | 2015-11-24 | Stycznik z napędem do przełączania podczas normalnej pracy i z szybkim wyzwalaczem do przerywania ścieżki prądowej w styczniku |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014117491.7A DE102014117491A1 (de) | 2014-11-28 | 2014-11-28 | Schaltgerät mit einem Antrieb zum betriebsmäßigen Schalten und mit einem Schnellauslöser zum Trennen eines Strompfads in dem Schaltgerät |
PCT/EP2015/077462 WO2016083350A1 (de) | 2014-11-28 | 2015-11-24 | Schaltgerät mit einem antrieb zum betriebsmässigen schalten und mit einem schnellauslöser zum trennen eines strompfads in dem schaltgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3224852A1 EP3224852A1 (de) | 2017-10-04 |
EP3224852B1 true EP3224852B1 (de) | 2019-08-28 |
Family
ID=54703966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15800783.1A Active EP3224852B1 (de) | 2014-11-28 | 2015-11-24 | Schaltgerät mit einem antrieb zum betriebsmässigen schalten und mit einem schnellauslöser zum trennen eines strompfads in dem schaltgerät |
Country Status (6)
Country | Link |
---|---|
US (1) | US10128058B2 (zh) |
EP (1) | EP3224852B1 (zh) |
CN (1) | CN107408478B (zh) |
DE (1) | DE102014117491A1 (zh) |
PL (1) | PL3224852T3 (zh) |
WO (1) | WO2016083350A1 (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2576338A (en) * | 2018-08-15 | 2020-02-19 | Eaton Intelligent Power Ltd | Switching device and method for operating a switching device |
DE102018216211B3 (de) | 2018-09-24 | 2020-02-20 | Siemens Aktiengesellschaft | Kurzschließereinrichtung und Umrichter |
DE102018222466B4 (de) * | 2018-12-20 | 2020-10-29 | Audi Ag | Schütz für ein Elektrofahrzeug und Elektrofahrzeug |
CN113035648B (zh) * | 2019-12-25 | 2024-06-25 | 华为数字能源技术有限公司 | 触头装置及电磁开关 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19740490C1 (de) * | 1997-09-15 | 1999-04-15 | Condor Werke Gebr Frede Gmbh & | Trennschalter |
DE102006055007A1 (de) * | 2006-11-22 | 2008-05-29 | Abb Ag | Installationsschaltgerät mit einer Doppelunterbrechung |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3123357A1 (de) | 1981-06-12 | 1982-12-30 | Degussa Ag, 6000 Frankfurt | "elektrisches kontaktstueck" |
DE4318196A1 (de) * | 1993-06-01 | 1994-12-08 | Kloeckner Moeller Gmbh | Elektromagnetisches Schaltgerät |
DE4322935C2 (de) * | 1993-07-09 | 1995-10-26 | Kloeckner Moeller Gmbh | Kontaktsystem für ein elektromagnetisches Schaltgerät mit Schnellauslöser |
DE10343005B4 (de) * | 2003-09-17 | 2005-10-27 | Siemens Ag | Schaltgerät sowie Verfahren zu dessen Herstellung |
CN101536131B (zh) * | 2006-08-21 | 2013-03-27 | 阿科林有限公司 | 快速作用开关机构及包括其的电路断路器 |
WO2014023326A1 (de) | 2012-08-06 | 2014-02-13 | Siemens Aktiengesellschaft | Schaltgerät mit elektromagnetischem schaltschloss |
-
2014
- 2014-11-28 DE DE102014117491.7A patent/DE102014117491A1/de not_active Withdrawn
-
2015
- 2015-11-24 EP EP15800783.1A patent/EP3224852B1/de active Active
- 2015-11-24 US US15/529,087 patent/US10128058B2/en active Active
- 2015-11-24 WO PCT/EP2015/077462 patent/WO2016083350A1/de active Application Filing
- 2015-11-24 CN CN201580063564.2A patent/CN107408478B/zh active Active
- 2015-11-24 PL PL15800783T patent/PL3224852T3/pl unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19740490C1 (de) * | 1997-09-15 | 1999-04-15 | Condor Werke Gebr Frede Gmbh & | Trennschalter |
DE102006055007A1 (de) * | 2006-11-22 | 2008-05-29 | Abb Ag | Installationsschaltgerät mit einer Doppelunterbrechung |
Also Published As
Publication number | Publication date |
---|---|
US10128058B2 (en) | 2018-11-13 |
EP3224852A1 (de) | 2017-10-04 |
WO2016083350A1 (de) | 2016-06-02 |
CN107408478A (zh) | 2017-11-28 |
PL3224852T3 (pl) | 2020-03-31 |
US20170345585A1 (en) | 2017-11-30 |
CN107408478B (zh) | 2019-07-26 |
DE102014117491A1 (de) | 2016-06-02 |
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