EP1095389B1 - Current contact system for a current switch - Google Patents
Current contact system for a current switch Download PDFInfo
- Publication number
- EP1095389B1 EP1095389B1 EP99926225A EP99926225A EP1095389B1 EP 1095389 B1 EP1095389 B1 EP 1095389B1 EP 99926225 A EP99926225 A EP 99926225A EP 99926225 A EP99926225 A EP 99926225A EP 1095389 B1 EP1095389 B1 EP 1095389B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- current
- contact
- conductor loop
- switch
- current contact
- 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.)
- Expired - Lifetime
Links
- 239000004020 conductor Substances 0.000 claims description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
-
- 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
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/38—Plug-and-socket contacts
- H01H1/385—Contact arrangements for high voltage gas blast circuit breakers
-
- 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 is based on current contact arrangements a current switch according to the preamble of claim 1.
- the invention takes to a prior art reference, as it is from DE 2925162 C2 is known.
- a high voltage switch with one movable contact between an inner and outer fixed contact piece described.
- a contact finger with a contact loop is used, which is supported by a leaf spring against a contact ring of the Movable contact piece of the current switch in its Closing state presses.
- There is a on the moving contact Loop contact arranged, which in the closed state of the Current switch presses against the inner contact piece and at Opening the power switch after opening the Contact finger opens.
- the invention as defined in claim 1 solves the task of current contact arrangements of a current switch continue to develop in such a way that the Power switch is easier and cheaper to manufacture.
- An advantage of the invention is that Nominal current path no additional power current path required is.
- Fig. 1 shows a section of a sectional view circular cylindrical rated current contact arrangement of a Circuit breaker or current switch in the closed state, whereby with (1) whose longitudinal axis is designated.
- a tubular, movable 1st current contact arrangement (K1) and a tubular, Fixed 2nd current contact arrangement (K2) have ends Switch contacts (P4) or (P1), which are inexpensive Welding of profile rings can be produced.
- the up to opposite switching contacts (P2) and (P3) consists of a bimetal.
- the inside part of the Bimetal consists of a material with a high Elastic constant, preferably made of steel (2), and the external made of an electrically good conductive material, preferably made of copper (3) or a copper alloy.
- the Steel component of the current loop (R2) ensures it high radial elasticity; it is shaped so that the Current conductor loop (R2) after a contact separation in the Fig.
- the current conductor loop (R2) can be elastic on its basis be sawn on the inside in the radial direction.
- the Copper component of the bimetal ensures a high electric conductivity.
- the in the closed state of the Current switch one above the other and by an elastic Deformation of the 1st and 2nd current contact arrangements (K1, K2) Pressed switch contacts (P1) - (P4) are arcing stressed differently. For the little used ones Switch contacts (P1) and (P2) suffice a silver plating while the switch contacts (P3) and (P4) a support from one Have burning material.
- the current conductor loop (R2) has at the end behind the switch contacts (P1) and (P2) Angled contact end or arcing horn on the arc side (3 ') made of copper.
- a dashed line (4) through the 1st Current contact arrangement (K1), the switching contacts (P1) - (P4) and the 2nd current contact arrangement (K2) indicates a symmetrical Rung on.
- FIG. 2 shows current contact arrangements of the current switch according to Fig. 1 in the open state, the 1st current contact arrangement (K1) is shifted to the right in the direction of an arrow (5).
- the contact pairs (P1, P2) are first separated, whereby the current commutates into the current loop (R2), as shown in dashed lines.
- the Current conductor loop (R2) has relaxed, that also separates Contact pair (P3, P4), so that an arc (6) arises
- the due to the asymmetrical current routing in the conductor loop (R2) on the arcing horns (3 ', R1) is driven.
- the arc quickly from the original contact point driven away and increasingly asymmetrically magnetic blow so that its burning voltage increases rapidly.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Contacts (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Description
Bei der Erfindung wird ausgegangen von Stromkontaktanordnungen
eines Stromschalters nach dem Oberbegriff des Patentanspruchs 1.The invention is based on current contact arrangements
a current switch according to the preamble of
Mit dem Oberbegriff des Patentanspruchs 1 nimmt die Erfindung
auf einen Stand der Technik Bezug, wie er aus der DE 2925162 C2
bekannt ist. Dort ist ein Hochspannungsschalter mit einem
beweglichen Schaltstück zwischen einem inneren und äußeren
feststehenden Schaltstück beschrieben. In das äußere Schaltstück
ist ein Kontaktfinger mit einer Kontaktschleife eingesetzt,
welche durch eine Blattfeder gegen einen Kontaktring des
beweglichen Schaltstückes des Stromschalters in dessen
Schließzustand drückt. Am beweglichen Schaltstück ist ein
Schlingenkontakt angeordnet, welcher im Schließzustand des
Stromschalters gegen das innere Schaltstück drückt und beim
Öffnen des Stromschalters zeitlich nach dem Öffnen des
Kontaktfingers öffnet. Beim Ausschaltvorgang wird zwischen den
Nennstromkontakten in kürzester Zeit eine vergleichsweise große
Spannung aufgebaut, welche den abzuschaltenden Strom äußerst
rasch vom Nennstrompfad in einen Leistungspfad treibt. Der
Lichtbogen, der beim Öffnen des Kontaktfingerkontaktes entsteht,
wird durch das magnetische Feld von dessen Schlinge beblasen; er
erlischt schnell, weil zunächst noch ein alternativer Strompfad
zwischen dem beweglichen und dem inneren feststehenden
Schaltstück besteht. With the preamble of
Der Aufbau eines derartigen Nennstromkontaktsystems mit vielen Kontaktfingern und dazugehörigen Halterungen und Andruckfedern ist relativ aufwendig und teuer.The construction of such a nominal current contact system with many Contact fingers and associated mounts and pressure springs is relatively complex and expensive.
Die Erfindung, wie sie im Patentanspruch 1 definiert ist, löst
die Aufgabe, Stromkontaktanordnungen eines Stromschalters der
eingangs genannten Art derart weiterzuentwickeln, daß der
Stromschalter einfacher und kostengünstiger herstellbar ist.The invention as defined in
Vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Patentansprüchen definiert.Advantageous embodiments of the invention are in the dependent claims defined.
Ein Vorteil der Erfindung besteht darin, daß zu dem Nennstrompfad kein zusätzlicher Leistungsstrompfad erforderlich ist.An advantage of the invention is that Nominal current path no additional power current path required is.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung kann die Lichtbogenlänge mit einfachen Mitteln vergrößert und damit die Kommutationsspannung erhöht, das Abschaltverhalten verbessert und der Abbrand der Stromkontakte verringert werden.According to an advantageous embodiment of the invention, the Arc length increased with simple means and thus the Commutation voltage increased, the switch-off behavior improved and the erosion of the power contacts can be reduced.
Die Erfindung wird nachstehend anhand eines Ausführungsbeispiels erläutert. Es zeigen:
- Fig. 1
- in einem Ausschnitt einen Querschnitt der oberen Hälfte von Stromkontaktanordnungen eines Stromschalters in Schließstellung und
- Fig. 2
- Stromkontaktanordnungen gemäß Fig. 1 in geöffnetem Schaltzustand.
- Fig. 1
- in a section a cross section of the upper half of current contact arrangements of a current switch in the closed position and
- Fig. 2
- 1 in the open switching state.
Zum Verständnis der Erfindung nicht notwendige Konstruktionselemente sowie das Gehäuse des Stromschalters sind in den Zeichnungen weggelassen worden. Der Übersichtlichkeit wegen einstückig dargestellte Teile können in der Praxis aus konstruktiven und fertigungstechnischen Gründen aus mehreren Teilen zusammengesetzt sein.Not necessary to understand the invention Construction elements and the housing of the power switch are have been omitted from the drawings. The clarity because of parts shown in one piece can in practice design and manufacturing reasons for several Be composed of parts.
In den Figuren sind gleiche Teile mit gleichen Bezugszeichen gekennzeichnet.In the figures, the same parts have the same reference numerals characterized.
Fig. 1 zeigt in einem Ausschnitt eine Schnittdarstellung einer kreiszylindrischen Nennstrom-Kontaktanordnung eines Leistungsschalters bzw. Stromschalters im Schließzustand, wobei mit (1) dessen Längsachse bezeichnet ist. Eine rohrförmige, bewegliche 1. Stromkontaktanordnung (K1) und eine rohrförmige, feststehende 2. Stromkontaktanordnung (K2) weisen endseitig Schaltkontakte (P4) bzw. (P1) auf, die kostengünstig durch Anschweißen von Profilringen herstellbar sind. An der 1. Stromkontaktanordnung (K1) ist endseitig ferner ein U-förmiges Lichtbogenhorn (R1) aus einem elektrisch gutleitenden Werkstoff angeordnet und an der 2. Stromkontaktanordnung (K2) endseitig ein Lichtbogenhorn bzw. eine U-förmige Stromleiterschleife (R2), die bis zu einander gegenüberliegenden Schaltkontakten (P2) und (P3) aus einem Bimetall besteht. Der innenliegende Teil des Bimetalls besteht aus einem Material mit einer hohen Elastizitätskonstante, vorzugsweise aus Stahl (2), und der außenliegende aus einem elektrisch gutleitenden Material, vorzugsweise aus Kupfer (3) oder einer Kupferlegierung. Die Stahlkomponente der Stromleiterschleife (R2) gewährleistet deren hohe radiale Elastizität; sie ist so geformt, daß sich die Stromleiterschleife (R2) nach einer Kontakttrennung in die in Fig. 2 gezeigte Form entspannt. Zur Verbesserung dieser Elastizität kann die Stromieiterschleife (R2) auf ihrer nach innen gebogenen Seite in radialer Richtung eingesägt sein. Die Kupferkomponente des Bimetalls gewährleistet eine hohe elektrische Leitfähigkeit. Die im Schließzustand des Stromschalters übereinanderliegenden und durch eine elastische Deformation der 1. und 2. Stromkontaktanordnungen (K1, K2) angedrückten Schaltkontakte (P1) - (P4) sind durch Lichtbögen unterschiedlich stark beansprucht. Für die wenig beanspruchten Schaltkontakte (P1) und (P2) genügt ein Silberüberzug, während die Schaltkontakte (P3) und (P4) eine Auflage aus einem Abbrandmaterial aufweisen. Die Stromleiterschleife (R2) weist endseitig hinter den Schaltkontakten (P1) und (P2) ein lichtbogenseitig abgewinkeltes Kontaktende bzw. Lichtbogenhorn (3') aus Kupfer auf. Eine gestrichelte Linie (4) durch die 1. Stromkontaktanordnung (K1), die Schaltkontakte (P1) - (P4) und die 2. Stromkontaktanordnung (K2) deutet einen symmetrischen Strompfad an.Fig. 1 shows a section of a sectional view circular cylindrical rated current contact arrangement of a Circuit breaker or current switch in the closed state, whereby with (1) whose longitudinal axis is designated. A tubular, movable 1st current contact arrangement (K1) and a tubular, Fixed 2nd current contact arrangement (K2) have ends Switch contacts (P4) or (P1), which are inexpensive Welding of profile rings can be produced. On the 1st Current contact arrangement (K1) is also a U-shaped end Arc horn (R1) made of an electrically highly conductive material arranged and on the second current contact arrangement (K2) at the end an arcing horn or a U-shaped conductor loop (R2), the up to opposite switching contacts (P2) and (P3) consists of a bimetal. The inside part of the Bimetal consists of a material with a high Elastic constant, preferably made of steel (2), and the external made of an electrically good conductive material, preferably made of copper (3) or a copper alloy. The Steel component of the current loop (R2) ensures it high radial elasticity; it is shaped so that the Current conductor loop (R2) after a contact separation in the Fig. 2 shape shown relaxed. To improve this The current conductor loop (R2) can be elastic on its basis be sawn on the inside in the radial direction. The Copper component of the bimetal ensures a high electric conductivity. The in the closed state of the Current switch one above the other and by an elastic Deformation of the 1st and 2nd current contact arrangements (K1, K2) Pressed switch contacts (P1) - (P4) are arcing stressed differently. For the little used ones Switch contacts (P1) and (P2) suffice a silver plating while the switch contacts (P3) and (P4) a support from one Have burning material. The current conductor loop (R2) has at the end behind the switch contacts (P1) and (P2) Angled contact end or arcing horn on the arc side (3 ') made of copper. A dashed line (4) through the 1st Current contact arrangement (K1), the switching contacts (P1) - (P4) and the 2nd current contact arrangement (K2) indicates a symmetrical Rung on.
Fig. 2 zeigt Stromkontaktanordnungen des Stromschalters gemäß Fig. 1 im Öffnungszustand, wobei die 1. Stromkontaktanordnung (K1) in Richtung eines Pfeiles (5) nach rechts verschoben ist. Beim Öffnen werden zunächst die Kontaktpaare (P1, P2) getrennt, wodurch der Strom in die Stromleiterschleife (R2) kommutiert, wie es gestrichelt eingezeichnet ist. Nachdem sich die Stromleiterschleife (R2) entspannt hat, trennt auch das Kontaktpaar (P3, P4), so daß ein Lichtbogen (6) entsteht, der durch die asymmetrische Stromführung in der Stromleiterschleife (R2) auf die Lichtbogenhörner (3', R1) getrieben wird. Damit wird der Lichtbogen schnell von der ursprünglichen Kontaktstelle weggetrieben und dabei zunehmend asymmetrisch magnetisch beblasen, so daß seine Brennspannung schnell zunimmt. 2 shows current contact arrangements of the current switch according to Fig. 1 in the open state, the 1st current contact arrangement (K1) is shifted to the right in the direction of an arrow (5). When opening, the contact pairs (P1, P2) are first separated, whereby the current commutates into the current loop (R2), as shown in dashed lines. After the Current conductor loop (R2) has relaxed, that also separates Contact pair (P3, P4), so that an arc (6) arises, the due to the asymmetrical current routing in the conductor loop (R2) on the arcing horns (3 ', R1) is driven. In order to the arc quickly from the original contact point driven away and increasingly asymmetrically magnetic blow so that its burning voltage increases rapidly.
- 11
- Längsachse des StromschaltersLongitudinal axis of the current switch
- 22
- 1. Bimetall von R2, Stahl1. Bimetal from R2, steel
- 33
- 2. Bimetall von R2, Kupfer2. Bimetal of R2, copper
- 3'3 '
- lichtbogenseitiges Kontaktende von 3, Hornbügel, Lichtbogenhornarcing-side contact end of 3, horn bracket, Arcing horn
- 44
- Strompfadcurrent path
- 55
- Pfeilarrow
- 66
- LichtbogenElectric arc
- K1K1
- bewegliche 1. StromkontaktanordnungMovable 1st power contact arrangement
- K2K2
- feststehende 2. Stromkontaktanordnungfixed 2nd current contact arrangement
- P1P1
- Schaltkontakt von K2Switch contact from K2
- P2, P3P2, P3
- Schaltkontakte von R2Switch contacts from R2
- P4P4
- Schaltkontakt von K1Switch contact from K1
- R1R1
- U-förmiges Lichtbogenhorn von K1U-shaped arcing horn from K1
- R2R2
- U-förmige Stromleiterschleife von K2, LichtbogenhornU-shaped conductor loop from K2, arcing horn
Claims (6)
- A current contact arrangement of a current switcha) having at least two 1st and 2nd current contact arrangements (K1, K2) which can be moved mechanically with respect to one another,b) each of these current contact arrangements (K1, K2) having at least one switching contact (P4, P1), andc) at least one of the two current contact arrangements (K2) having a current conductor loop (R2),
whereind) the current conductor loop (R2) has at least two switching contacts (P2, P3), ande) wherein these switching contacts (P2, P3) of the current conductor loop (R2) form a highly conductive, mechanical pressure connection, when the current switch is closed, with the switching contacts (P4, P1) of the two current contact arrangements (K1, K2). - The current contact arrangements as claimed in claim 1, wherein the current conductor loop (R2) is designed to be elastic.
- The current contact arrangements as claimed in one of the preceding claims, wherein the current conductor loop (R2) is designed as a bimetallic strip, composed on the inside of a material having a high coefficient of elasticity, and composed on the outside of an electrically highly conductive material.
- The current contact arrangements as claimed in claim 3, wherein the bimetallic strip has steel on the inside and copper or a copper alloy on the outside.
- The current contact arrangements as claimed in one of the preceding claims, wherein the two switching contacts (P2, P3) of the current conductor loop (R2) and that switching contact (P4) of the current contact arrangement (K1) which is not connected to the current conductor loop (R2) are connected to arc horns (3', R1).
- The current contact arrangements as claimed in one of the preceding claims, wherein the current conductor loop (R2) has mutually opposite switching contacts (P2, P3).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19830232A DE19830232A1 (en) | 1998-07-07 | 1998-07-07 | Current contact arrangements of a current switch |
| DE19830232 | 1998-07-07 | ||
| PCT/CH1999/000301 WO2000003406A1 (en) | 1998-07-07 | 1999-07-06 | Current contact system for a current switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1095389A1 EP1095389A1 (en) | 2001-05-02 |
| EP1095389B1 true EP1095389B1 (en) | 2002-03-06 |
Family
ID=7873172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99926225A Expired - Lifetime EP1095389B1 (en) | 1998-07-07 | 1999-07-06 | Current contact system for a current switch |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6320149B1 (en) |
| EP (1) | EP1095389B1 (en) |
| CN (1) | CN1146930C (en) |
| DE (2) | DE19830232A1 (en) |
| WO (1) | WO2000003406A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1307094B1 (en) | 2000-08-08 | 2004-02-04 | CERA Handelsgesellschaft mbH | Horse-shoe type, plate-shaped, plastic hoof fitting |
| DE10065091A1 (en) | 2000-12-21 | 2002-06-27 | Siemens Ag | Contact arrangement for a vacuum interrupter |
| DE102005004872A1 (en) | 2005-02-03 | 2006-08-10 | Degussa Ag | Aqueous emulsions of functional alkoxysilanes and their condensed oligomers, their preparation and use for surface treatment |
| EP1926112A1 (en) * | 2006-11-23 | 2008-05-28 | ABB Technology AG | Electric contact-system for an electric switching device |
| EP2741305A1 (en) * | 2012-12-07 | 2014-06-11 | ABB Technology AG | High voltage circuit breaker |
| CN104766770B (en) | 2014-01-07 | 2017-09-08 | 西门子公司 | The stationary contact bracket and its breaker of breaker |
| GB2531349A (en) * | 2014-10-17 | 2016-04-20 | Hawker Siddeley Switchgear Ltd | Circuit breaker with coil for arc displacement |
| ES2711795T3 (en) | 2016-05-12 | 2019-05-07 | Evonik Degussa Gmbh | Use of aqueous emulsions based on propyletoxysilane oligomers as an additive in cement mixtures that hydraulically set to reduce shrinkage behavior |
| DE102018216723A1 (en) * | 2018-09-28 | 2020-04-02 | Siemens Aktiengesellschaft | Contact arrangement for a disconnector and method for electrically contacting the contact arrangement |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE480164C (en) | 1927-07-28 | 1929-07-27 | Calor Elek Zitaets Akt Ges | Contact arrangement on automatic switches |
| US1942678A (en) | 1930-05-20 | 1934-01-09 | Westinghouse Electric & Mfg Co | Circuit interrupter |
| US3499126A (en) * | 1968-07-24 | 1970-03-03 | Litton Precision Prod Inc | Electrical contact assembly with ramp guide |
| CH645204A5 (en) * | 1979-05-25 | 1984-09-14 | Bbc Brown Boveri & Cie | ELECTRIC SWITCH FOR LARGE CURRENTS. |
| DE19517615A1 (en) * | 1995-05-13 | 1996-11-14 | Abb Research Ltd | Circuit breaker |
| DE19816506B4 (en) * | 1998-04-14 | 2008-04-30 | Abb Research Ltd. | breakers |
-
1998
- 1998-07-07 DE DE19830232A patent/DE19830232A1/en not_active Withdrawn
-
1999
- 1999-07-06 EP EP99926225A patent/EP1095389B1/en not_active Expired - Lifetime
- 1999-07-06 US US09/743,138 patent/US6320149B1/en not_active Expired - Fee Related
- 1999-07-06 CN CNB998079979A patent/CN1146930C/en not_active Expired - Fee Related
- 1999-07-06 DE DE59900953T patent/DE59900953D1/en not_active Expired - Fee Related
- 1999-07-06 WO PCT/CH1999/000301 patent/WO2000003406A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| CN1146930C (en) | 2004-04-21 |
| CN1307726A (en) | 2001-08-08 |
| WO2000003406A1 (en) | 2000-01-20 |
| DE19830232A1 (en) | 2000-01-13 |
| DE59900953D1 (en) | 2002-04-11 |
| US6320149B1 (en) | 2001-11-20 |
| EP1095389A1 (en) | 2001-05-02 |
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