EP3025361A1 - Schaltgerät mit einem elektromagnetischen lichtbogenantrieb - Google Patents
Schaltgerät mit einem elektromagnetischen lichtbogenantriebInfo
- Publication number
- EP3025361A1 EP3025361A1 EP13815467.9A EP13815467A EP3025361A1 EP 3025361 A1 EP3025361 A1 EP 3025361A1 EP 13815467 A EP13815467 A EP 13815467A EP 3025361 A1 EP3025361 A1 EP 3025361A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching device
- legs
- arc
- switching
- shaped
- 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 abstract description 9
- 238000010791 quenching Methods 0.000 claims description 13
- 230000000171 quenching effect Effects 0.000 claims description 13
- 210000002414 leg Anatomy 0.000 description 38
- 230000005291 magnetic effect Effects 0.000 description 31
- 230000004907 flux Effects 0.000 description 13
- 239000004020 conductor Substances 0.000 description 5
- 239000012212 insulator Substances 0.000 description 4
- 238000012217 deletion Methods 0.000 description 3
- 230000037430 deletion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 210000000689 upper leg Anatomy 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
Classifications
-
- 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
- H01H9/346—Details concerning the arc formation chamber
-
- 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
- H01H9/446—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts
Definitions
- the invention relates to a switching device having a electromag netic ⁇ arc drive, wherein the switching device is a
- Such arc extinguishing device often consists of an arc chamber with Lichtbogenleitblechen and various components, which fulfill, among other things, fluidic tasks.
- the arc chamber is often designed as a package of U-shaped punched ⁇ punched quenching plates, which are arranged in parallel and are kept at a distance.
- a strip of insulating material usually a volcanic strip
- the baffles are located at the top and bottom of the arc chamber.
- the upper arc guide plate forms ⁇ together with a movable contact bridge a Needlesstel ⁇ le. In the arc extinguishing device, the arc migrates from the contact point into the arc chamber.
- the arc guide plates are shaped and angeord ⁇ net that they lead the arc as quickly as possible to the arc chamber. Inside the arc chamber, the arc is then extinguished. During the procedure described current or thermo-mechanical forces occur Zvi ⁇ rule the quenching plates and the arc guide plates. If the arc guide plate is not fixed stable enough, which often does not succeed due to the structural conditions often, they touch the outer quenching plates and weld with them. As a result, the efficiency of the arc chamber for further deletion processes is reduced.
- the mechanism of action accordingly consists in that the current flow generates a magnetic flux across the arc formed by ferromagnetic parts in the vicinity of the contact point ⁇ is deflected so that a force acts on the arc which it away to one of the contact point Arc extinguishing system drives. Accordingly, the object of the present invention da ⁇ rin to provide a switching device with an electromagnetic arc drive, which allows optimization with regard to the deflection and deletion of switching arcs.
- this object is achieved by a switching device having an electromagnetic arc drive, wherein the switching device has a switching chamber with a fixedly positioned switching piece and a movable contact piece arranged opposite thereto.
- the invention distinguishes itself because ⁇ through out that the electromagnetic arc drive is constructed in the form of a sheet which is positioned around the fixed posi tioned ⁇ switching piece around.
- the sheet in particular blower U-shaped with two legs, which are connected to each other via a connecting central part.
- the connecting central part of the sheet is parallel between the legs of the U-shaped curved fixedly positioned contact piece arranged in the area behind the contacts.
- the advantages of the switching device according to the invention with electromagnetic ⁇ magnetic arc drive are that already by the current flow in the fixed-position switching piece be- see connection and contact point in the sheet a magneti ⁇ shear flow is induced, whereby the magnetic Kraftwir ⁇ effect is increased to the arc , Since there is no insulating material between the lateral legs on the plate and the contacts. al, the arc can also change to the plate and divide. This results in a more rapid increase in boom voltage, whereby the current flow over the Lichtbo ⁇ gene is limited faster.
- the sheet is U-shaped with two legs which are connected to each other via a connecting central part is formed.
- the connecting central part of the U-shaped sheet is arranged in parallel between the legs of the U-shaped bent fixedly positioned switching piece in the area behind the contacts.
- another concept may consist in that the legs of the U-förmi ⁇ gene sheet are parallel to each other and congruent.
- the spacing of the two mutually parallel legs of the U-shaped sheet is determined essentially by the leg of the U-shaped sheet metal.
- a technical continuation of the inventive concept may consist in that the legs of the U-shaped sheet are starting from the connecting central part obliquely back ge ⁇ leads.
- the connecting central part of the sheet is arranged in Be ⁇ rich behind the contacts. If the connecting central part were further offset in the direction of contacts, then the current flow would reduce the induction of the magnetic flux in the metal sheet.
- the lateral legs on the plate are pulled only so far in the direction of moving contact piece that they cover the area in which the contacts are located. Thus, the interaction of the magnetic fields by the current flow in caused movable switching element, or minimized by the fixedly positioned switching piece to the right current flowing through the plate.
- the connecting central part of the U-shaped sheet is positioned between two legs of the egg ⁇ shaped fixedly positioned switching piece.
- the connecting central part of the U-shaped sheet is arranged in parallel between the legs of the U-shaped fixed fixed contact piece in the area behind the contacts. Due to the current flow from the conductor connection to the contact, a magnetic flux is induced in the connecting central part of the sheet, which interacts with the magnetic flux which is induced by the current flow in the arc and thus generates a force on the arc.
- the connecting central part is positioned below quenching plates, which are arranged in the switching chamber.
- the immediate proximity to the extinguishing agents in the switching chamber allows a fast extinction of the switching arcs.
- the contours of the limbs of the U-shaped sheet are adapted to the positioning of the quenching plates arranged above it. This particular geometric exporting ⁇ approximate shape allows for optimal use of the available space.
- the end portions of the legs of the U-shaped sheet are po sitioned ⁇ in the region of contact points of the fixed-position and movable contact piece.
- the lateral legs of the sheet are drawn only so far in the direction of movable contact piece that they cover the area in which the contacts are located.
- an insulating body is positioned between the connecting central part of the U-shaped plate and the legs of the U-shaped, fixedly positioned contact piece.
- the insulating isolated in ⁇ We sentlichen the connecting central part of the sheet from the fixed po- sition striv switching piece.
- the insulator does not isolate the lateral legs on the sheet metal toward the arc or to the switching chamber interior. This allows the arc created between the contacts to commutate and divide on the lateral legs. Since -Call the central part of the sheet and the fixed-position switching ⁇ piece of an insulating body is located between the commutation of the arc does not interfere with the sheet. This means that there can be no short circuit at any other point between the fixedly positioned contact piece over the metal sheet to the movable contact piece.
- the connecting central part of the egg ⁇ shaped sheet between two legs of the U-shaped insulating is lier emotionss that shield the legs of the fixedly positioned switching ⁇ piece, is positioned. Due to the positioning of the insulator, the commutation of the arc on the sheet does not interfere. As a result, it is not located anywhere between the fixed position
- Contact piece over the sheet to the movable contact piece may cause a short circuit.
- Figure 1 is a perspective view of a fixed and a movable contact piece with an electromagnetic magnetic arc drive in the form of a sheet.
- FIG. 2 is a sectional view of the illustration according to FIG. 1;
- FIG. FIG. 3 is a perspective view of the representation according to FIG. 1, including the current flow and the induced magnetic fields;
- FIG. 2 is a sectional view of the illustration according to FIG. 1;
- FIG. 3 is a perspective view of the representation according to FIG. 1, including the current flow and the induced magnetic fields;
- FIG. 2 is a sectional view of the illustration according to FIG. 1;
- FIG. FIG. 3 is a perspective view of the representation according to FIG. 1, including the current flow and the induced magnetic fields;
- FIG. 4 in a perspective view of the illustration of FIG. 1 including insulator.
- Fig. 1 shows an arrangement of the components in a switching chamber of a switching device. These include a fixedly positioned contact piece 1 with a contact point 2, which is arranged opposite to a contact point 3 of a movable contact piece 4.
- the fixedly positioned contact piece 1 is preferably U-shaped with two legs 5, 6, which may be of different lengths and parallel to each other, and the two legs 5, 6 interconnecting connecting portion 7.
- Fig. 1 shows an electromagnetic arc drive in Shape of a sheet 8, which is preferably U-shaped with two legs 9, 10, which are preferably formed parallel and congruent to each other, and a connecting middle part 11.
- the connecting center part 11 of the sheet 8 is preferably between ⁇ between the legs 5, 6 of the fixedly positioned contact piece 1 is arranged.
- the legs 9, 10 of the sheet 8 are preferably obliquely rearward toward the Needlesstel ⁇ len 2, 3 pulled.
- contours 13, 14 are incorporated, which take into account the positioning of the quenching plates 12.
- Fig. 1 shows, in addition, a conductor terminal 15 is shown on the leg 6 of the fixedly positioned contact piece 1.
- the current flow 16 which is shown in the form of arrows in Fig. 2, extends over the leg 6 of the fixedly positioned contact piece 1 and continues in the movable contact piece 4.
- the positioning of the arc 17 is shown in Auslö ⁇ sefall, between the contact points 2, 3 of the fixedly positioned contact piece 1 and the movable
- Fig. 3 in addition to the current flow 16 and arc 17, the induced magnetic fields 18, 19, 20 and the magnetic flux 21 are shown.
- the induced magnetic field 18 is formed on the movable contact 4.
- the induced magnetic field 19 is located between the movable contact 4 and the fixedly positioned contact 1.
- the induced magnetic field 20 is formed at the connecting central portion 11 of the sheet 8.
- the superposition of the magnetic fields 19 and 20 be ⁇ acts a deflection of the arc to the outside. Due to the flow of current from the conductor terminal 15 to the contact points 2, 3, a magnetic flux is induced in the connecting central portion 11 of the U-shaped plate 8, which cooperates with the magnetic flux, which is induced by the current flow in the arc 17 and thus a force on the Arc 17 is generated.
- FIG. 4 shows the arrangement of the components in a switching chamber of a switching device including an insulating body 22 which is U-shaped with two legs 23, 24 and a connecting part 25 between the legs 23, 24.
- the legs 23, 24 are preferably parallel to each other and ge ⁇ genionat lying aligned.
- the leg 23 surrounds the leg 5 of the fixedly positioned contact piece 1.
- the leg ⁇ 24 of the insulating body 22 is in the form of a cover over the leg 6 of the fixedly positioned contact piece 1 ⁇ forms. Between the legs 23, 24 of the insulating body 22, the connecting central part 11 of the sheet 8 is placed. Fig. 4 also shows the formation of arcs 26.
- Arc drive in the form of a sheet is characterized in that already by the current flow in the fixed contact between the terminal and contact point in the sheet, a magnetic ⁇ tic flow is induced, so that the magnetic force is significantly increased effect on the arc. Since there is no insulating material between the lateral legs on the plate and on the contacts, the arc can also commutate to the plate and divide. This results in a faster arc voltage increase, which limits the flow of current over the arc faster. In addition, since there is an insulating body between the connecting central part of the sheet and the fixed contact piece, the commutation of the arc does not interfere with the sheet. This causes the formation of a short circuit is excluded.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2013/077157 WO2015090383A1 (de) | 2013-12-18 | 2013-12-18 | Schaltgerät mit einem elektromagnetischen lichtbogenantrieb |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3025361A1 true EP3025361A1 (de) | 2016-06-01 |
EP3025361B1 EP3025361B1 (de) | 2018-03-07 |
Family
ID=49911506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13815467.9A Active EP3025361B1 (de) | 2013-12-18 | 2013-12-18 | Schaltgerät mit einem elektromagnetischen lichtbogenantrieb |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3025361B1 (de) |
CN (1) | CN105745728B (de) |
WO (1) | WO2015090383A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017125685A1 (de) * | 2017-11-03 | 2019-05-09 | Schaltbau Gmbh | Schaltgerät mit Lichtbogenlöscheinrichtung und Lichtbogenführung |
CN108389742A (zh) * | 2018-04-27 | 2018-08-10 | 福州大学 | 加强弧隙吹弧磁通提高电器灭弧能力的方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63126136A (ja) * | 1986-11-14 | 1988-05-30 | 松下電工株式会社 | 消弧装置 |
JPH07296707A (ja) * | 1994-04-26 | 1995-11-10 | Fuji Electric Co Ltd | 回路遮断器の磁気駆動鉄心絶縁装置 |
US5589672A (en) * | 1994-06-14 | 1996-12-31 | Fuji Electric Co., Ltd. | Circuit breaker with arc quenching device and vent |
US7716816B2 (en) * | 2006-09-22 | 2010-05-18 | Rockwell Automation Technologies, Inc. | Method of manufacturing a switch assembly |
PL1998349T3 (pl) * | 2007-05-30 | 2012-11-30 | Bticino Spa | Wyłącznik o dużej zdolności wyłączania |
US9552934B2 (en) * | 2012-02-27 | 2017-01-24 | Siemens Aktiengesellschaft | Slot motor, slot motor cover, slot motor—arc plate assembly, and methods of operation |
-
2013
- 2013-12-18 WO PCT/EP2013/077157 patent/WO2015090383A1/de active Application Filing
- 2013-12-18 CN CN201380081061.9A patent/CN105745728B/zh active Active
- 2013-12-18 EP EP13815467.9A patent/EP3025361B1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2015090383A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP3025361B1 (de) | 2018-03-07 |
WO2015090383A1 (de) | 2015-06-25 |
CN105745728A (zh) | 2016-07-06 |
CN105745728B (zh) | 2018-04-27 |
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