EP1683170A1 - Switching device - Google Patents
Switching deviceInfo
- Publication number
- EP1683170A1 EP1683170A1 EP04802681A EP04802681A EP1683170A1 EP 1683170 A1 EP1683170 A1 EP 1683170A1 EP 04802681 A EP04802681 A EP 04802681A EP 04802681 A EP04802681 A EP 04802681A EP 1683170 A1 EP1683170 A1 EP 1683170A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching device
- base body
- hollow cylindrical
- cylindrical base
- ring
- 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
- 239000000463 material Substances 0.000 claims abstract description 31
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 230000002829 reductive effect Effects 0.000 claims description 10
- 239000011810 insulating material Substances 0.000 claims description 9
- 239000010410 layer Substances 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 229910052709 silver Inorganic materials 0.000 description 5
- 239000004332 silver Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000007750 plasma spraying Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 241000722921 Tulipa gesneriana Species 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
- H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
- H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
- H01H2011/046—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion by plating
-
- 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
Definitions
- the invention relates to a switching device with a first and a second axially opposite arcing contact piece and a first and a second nominal current contact piece arranged coaxially to the arcing contact pieces, wherein at least one of the nominal current contact pieces has a hollow cylindrical base body, which faces a switching path of the switching device The end is covered with an arc-proof material.
- Such a switching device is known for example from European patent application EP 0 982 748 AI.
- the arcing contact pieces there are coated with an arc-proof material by plasma spraying, so that an arcing between the arcing contact pieces causes no or only very little burn-off.
- the nominal current contact pieces also have a burn-resistant protective layer applied in sections on their sliding surfaces by means of plasma spraying.
- the fixed nominal current contact piece is silver-coated above the fire-resistant protective layer.
- the invention has for its object to design a switching device of the type mentioned in such a way that the contact points withstand a high mechanical and thermal load capacity with a high current carrying capacity.
- the object is achieved according to the invention in a switching device of the type mentioned at the outset in that the arc-proof material has a galvanic coating.
- the galvanic coating can, for example, consist of an electrically highly conductive material, such as silver or gold. This reduces the contact resistance of the electrical contact. At the same time, the galvanic coating prevents oxidation of the arc-proof material when the individual assemblies are stored for a long time. By including the arc-proof material in a galvanic finish, joints or boundary layers of different materials can be covered, which improves the mechanical strength and the mechanical resistance of these points.
- An advantageous embodiment can furthermore provide that the arc-proof material in the form of a ring, covering end faces of the hollow cylindrical base body, is attached to the hollow cylindrical base body.
- the electrical field in the direction of the switching path of the switching device is controlled to a large extent by the shape of the ring. This results in the possibility of using manufacturing processes with a lower precision, for example a reduced surface quality, for the manufacture of the base body than with the ring used for field control.
- the division into a hollow cylindrical base body and a ring also has the further advantage that the hollow cylindrical base body can be produced, for example, from a low-density material, such as aluminum, whereby the total mass of the hollow cylindrical base body and the arc-proof material attached to it is reduced , Arc-resistant materials are, for example, mixtures of the materials molybdenum (Mo), tungsten (W), copper (Cu) and silver (Ag).
- CuCrZr, CuZn39Pb3 or ECu57 can be used as the material for the arc-proof material.
- These materials have a very high density, which means that the ring has a relatively high mass.
- the mass to be moved is limited by the multi-part construction of the rated current contact piece.
- the ring has a smaller radial wall thickness at its end facing away from the switching path than at its end facing the switching path.
- the end facing the switching section having a greater wall thickness than the end facing away from the switching section, can be simply plugged onto the hollow cylindrical base body.
- This configuration of the shape of the ring means that it can be automatically centered on the hollow cylindrical base body. This results in a simplified assembly.
- the number of points of contact between the hollow-cylindrical base body and the arc-proof ring is increased due to the increased area.
- the electrical contact resistance between the arc-proof ring and the hollow cylindrical base body is reduced by an increased number of contact points.
- a further advantageous embodiment can provide that the ring is pressed against the hollow cylindrical base body of the rated current contact piece in the axial direction by means of a bolt.
- a bolting in the axial direction between the ring and the hollow cylindrical base body allows the outer contours of the ring and the hollow cylindrical base body to be kept free of bores or other fastening means. There- with the outer contour of the nominal current contact piece is retained. Furthermore, the Verbolzun ⁇ remains gene by an arrangement in the axial direction within the hollow cylindrical base body a sufficient volume free to receive further modules as beispiels- or at a
- bolting for example, threaded rods, screw connections, pressed or crimped or glued-in bolts, etc. can be used.
- the bolts are cage-like with their longitudinal axes parallel to the cylinder axis of the hollow cylindrical base body. A uniform distribution on the circumference of the hollow cylindrical base body enables the ring to be pressed uniformly against the hollow cylindrical base body.
- a further advantageous embodiment can provide that the hollow cylindrical base body has a radial projection, against which an insulating body, in particular an insulating material nozzle, is axially pressed by means of a pressure element.
- the radial projection represents a fixed stop for the insulating body.
- the position of the insulating body with respect to the hollow cylindrical base body is thus clearly defined.
- the insulator is installed using a
- An annular disk for example, can serve as the pressure element, which uniformly transmits the contact pressure to the insulating body.
- the radial projection is also formed in a circular manner.
- the hollow cylindrical base body has a reduced outer diameter at its end facing the switching section and that the radial projection on the hollow cylinder inner jacket is arranged in the region of the reduced outer diameter.
- the insulating material expands or shrinks. It is therefore necessary to clamp a sufficient volume of the insulator when using a clamp connection. This is the only way that a sufficient holding force can act on the insulating body at different thermal loads. A clamping range that is too small would not be suitable for permanently applying the necessary forces.
- the insulating body can be struck very close to the end face of the hollow cylindrical base body. This reduces the overall length required for the overall construction of the attachment of the erosion-resistant ring and the insulating material nozzle to the hollow cylindrical base body.
- a further advantageous embodiment can provide that the ring has fastening devices in the area of its increased radial wall thickness.
- Sections with an increased wall thickness allow the location of fastening devices to be chosen flexibly.
- such sections have a relatively high mechanical strength.
- a fastening device For example, threaded holes or other anchoring points can be provided.
- Figure 2 shows a further section through the switching device and the 3 shows a section through the switching device shown in Figures 1 and 2 along the axis AA.
- the switching device shown in FIG. 1 is a high-voltage circuit breaker 1.
- a high-voltage circuit breaker 1 is used to switch nominal currents and short-circuit currents.
- the high-voltage circuit breaker 1 has a first arcing contact piece 2 and a second arcing contact piece 3.
- the first arcing contact piece 2 is essentially cylindrical and has a coating with an arc-resistant material at its end facing the switching path of the high-voltage circuit breaker 1.
- the second arcing contact piece 3 is designed in the form of a tulip contact into which the first arcing contact piece 2 can be inserted. At its end facing the switching path, the second arcing contact piece 3 likewise has a coating made of arc-proof material.
- the two arcing contact pieces 2, 3 are arranged axially opposite one another on a main axis 4. Concentric to the first
- Arcing contact piece 2 a first nominal current contact piece 5 is arranged.
- a second rated current contact piece 6 is arranged concentrically with the second arcing contact piece 3.
- the first rated current contact piece 5 has at its end facing the switching path a multiplicity of elastic contact fingers 7 which are in electrically conductive contact with the outer casing of the second rated current contact piece 6 when the high-voltage circuit breaker 1 is closed.
- the second arcing contact piece 3 is surrounded by an insulating nozzle 8.
- the insulating nozzle 8 is held on the second rated current contact piece 6.
- the rated current contact pieces 5, 6 and the arcing contact pieces 2, 3 can be moved relative to one another along the main axis 4, in such a way that when switching on, the
- the second nominal current contact piece 6 has an essentially hollow-cylindrical basic body ⁇ a.
- the hollow cylindrical basic body ⁇ a is covered on the end face with a ring 9 made of an arc-proof material.
- the ring also has an essentially hollow cylindrical structure, with that of the
- Switching distance of the high-voltage circuit breaker 1 facing hollow cylinder cover surface is rounded. Furthermore, the wall thickness of the ring 9 is less on the side facing away from the switching path than on its side facing the switching path. In the present exemplary embodiment, this is achieved by increasing the inside diameter of the ring 9 on its side facing away from the switching path. In addition, a conical or parabolic shape of the inner surface of the ring 9 or other suitable geometric shapes can also be used.
- the hollow cylindrical basic body ⁇ a has a reduced outer diameter at its end facing the switching path. The reduced outer diameter of the hollow cylindrical base body 6a and the enlarged inner diameter of the ring 9 are coordinated with one another in such a way that the ring 9 can be plugged onto the hollow cylindrical base body 6a.
- the ring 9 has a plurality of threaded bores into which bolts 10 can be screwed.
- the bolts 10 each abut on edges of recesses which are arranged symmetrically distributed parallel to the main axis 4 in the jacket of the hollow cylindrical base body ⁇ a.
- the surface of the ring 9 is coated with a galvanic layer. This galva African layer is for example a silver layer.
- the hollow cylindrical base body ⁇ a is also provided with a galvanic coating.
- the arrangement of the ring 9 made of arc-proof material means that high switching capacities can also be controlled, in which switching arcs occur even at the nominal current contact pieces despite the use of arcing contact pieces.
- the use of the arc-proof ring 9 allows a compact design of a high-voltage circuit breaker.
- FIG. 2 shows a section through the high-voltage circuit breaker 1 known from FIG. 1. However, the section plane is pivoted about the main axis 4, so that the fastening of the insulating material nozzle 8 can now be seen.
- the insulating material nozzle 8 is held by means of further bolts 11 which can be screwed into threaded bores of the essentially hollow cylindrical base body ⁇ a.
- the threaded bores are aligned such that the further bolts 11, like the bolts 10, are arranged parallel to the main axis 4.
- the hollow cylindrical base body 6a has an annular projection 12. A circumferential shoulder of the insulating material nozzle 8 is pressed against the annular projection 12.
- the pressing force of the shoulder against the annular projection 12 is generated by means of a pressure element 13 in the form of a pressure disc, which is held by the further bolts 11.
- the annular projection 12 is arranged on the inner jacket side of the essentially hollow cylindrical base body 6a, specifically in the section 14 in which the outer diameter of the hollow cylindrical base body ⁇ a is reduced.
- FIG. 3 shows a section along the section plane AA shown in FIGS. 1 and 2.
- the pressure element 13 has an annular disk-shaped structure which has recesses which are penetrated by the further bolts 11. By means of the further bolts 11, the pressure element 13 is pressed against the projection 12 with the projecting shoulder of the insulating material nozzle 8 being interposed.
- the pressure element 13 is designed such that, in order to achieve a small overall diameter of the arrangement, the pressure element 13 has lateral notches in order to enable the ring 9 to be fastened by means of the bolts 10.
- This constructive design makes it possible to fasten the ring 9 or the insulating material nozzle 8 independently of one another. As a result, the two connections are decoupled from one another. Any malfunctions or thermal expansions etc. of some
- Connection points are largely kept away from the other connection.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Circuit Breakers (AREA)
Abstract
Description
Beschreibungdescription
Schalteinrichtungswitching device
Die Erfindung bezieht sich auf eine Schalteinrichtung mit einem ersten und einem zweiten einander axial gegenüberliegenden Lichtbogenkontaktstück sowie einem ersten und einem zweiten koaxial zu den Lichtbogenkontaktstücken angeordneten Nennstromkontaktstück, wobei zumindest eines der Nennstrom- kontaktstücke einen hohlzylindrischen Grundkörper aufweist, der an seinem einer Schaltstrecke der Schalteinrichtung zugewandten Ende stirnseitig mit einem lichtbogenfesten Material bedeckt ist.The invention relates to a switching device with a first and a second axially opposite arcing contact piece and a first and a second nominal current contact piece arranged coaxially to the arcing contact pieces, wherein at least one of the nominal current contact pieces has a hollow cylindrical base body, which faces a switching path of the switching device The end is covered with an arc-proof material.
Eine derartige Schalteinrichtung ist beispielsweise aus der europäischen Patentanmeldung EP 0 982 748 AI bekannt. Die Lichtbogenkontaktstücke sind dort durch Plasmaspritzen mit einem lichtbogenfesten Material überzogen, so dass ein zwischen den Lichtbogenkontaktstücken brennender Lichtbogen kei- nen oder nur einen sehr geringen Abbrand bewirkt. Weiterhin weisen die Nennstromkontaktstucke an deren Gleitflächen abschnittsweise ebenfalls eine mittels Plasmaspritzens aufgebrachte abbrandresistente Schutzschicht auf. Oberhalb der ab- brandresistenten Schutzschicht ist das feststehende Nenn- Stromkontaktstück versilbert.Such a switching device is known for example from European patent application EP 0 982 748 AI. The arcing contact pieces there are coated with an arc-proof material by plasma spraying, so that an arcing between the arcing contact pieces causes no or only very little burn-off. Furthermore, the nominal current contact pieces also have a burn-resistant protective layer applied in sections on their sliding surfaces by means of plasma spraying. The fixed nominal current contact piece is silver-coated above the fire-resistant protective layer.
Bei dem Aneinanderstoßen mehrerer Materialien wie abbrandre- sistentem Material, elektrisch leitfähigem Silber sowie einem weiteren Metall wie beispielsweise das Aluminium des Nenn- Stromkontaktstückes weisen die jeweiligen Stoßstellen stets Unregelmäßigkeiten auf. Die Stoßstelle ist nur in einem vermindertem Umfang mechanisch belastbar. Bei einem Aufeinander- fahren der Gleitflächen der Nennstromkontaktstucke entste- hende Oberflächenreibung kann zu Auflösungserscheinungen und so zu einer Schwächung der einzelnen Schichten führt. So st es möglich, dass ausgehend von der Stoßstelleein abplatzen einzelner Schichten stattfindet. Dadurch ist das Schaltvermö- gen der Schalteinrichtung vermindert.When several materials such as erosion-resistant material, electrically conductive silver and another metal such as the aluminum of the nominal current contact piece collide, the respective joints always show irregularities. The joint can only be mechanically loaded to a limited extent. When the sliding surfaces of the nominal current contact pieces move together, Surface friction can lead to signs of dissolution and weakening of the individual layers. It is thus possible for individual layers to flake off starting from the joint. This reduces the switching capacity of the switching device.
Der Erfindung liegt die Aufgabe zugrunde, eine Schalteinrichtung der eingangs genannten Art derart auszubilden, dass bei einer hohen Stromtragfähigkeit die Kontaktstellen einer hohen mechanischen sowie thermischen Belastbarkeit standhalten.The invention has for its object to design a switching device of the type mentioned in such a way that the contact points withstand a high mechanical and thermal load capacity with a high current carrying capacity.
Die Aufgabe wird bei einer Schalteinrichtung der eingangs genannten Art erfindungsgemäß dadurch gelöst, dass das lichtbogenfeste Material einen galvanischen Überzug aufweist.The object is achieved according to the invention in a switching device of the type mentioned at the outset in that the arc-proof material has a galvanic coating.
Der galvanische Überzug kann beispielsweise aus einem elektrisch gut leitenden Material, wie beispielsweise Silber oder Gold, bestehen. Dadurch wird der Übergangswiderstand des elektrischen Kontaktes vermindert. Gleichzeitig wird durch den galvanischen Überzug bei einer längeren Lagerung der einzelnen Baugruppen eine Oxidation an dem lichtbogenfesten Material verhindert. Durch eine Einbeziehung des lichtbogenfesten Materials in eine galvanische Veredelung sind Stoßstellen bzw. Grenzschichten verschiedener Materialien abdeckbar, wo- durch die mechanische Belastbarkeit und die mechanische Widerstandsfähigkeit dieser Stellen verbessert wird.The galvanic coating can, for example, consist of an electrically highly conductive material, such as silver or gold. This reduces the contact resistance of the electrical contact. At the same time, the galvanic coating prevents oxidation of the arc-proof material when the individual assemblies are stored for a long time. By including the arc-proof material in a galvanic finish, joints or boundary layers of different materials can be covered, which improves the mechanical strength and the mechanical resistance of these points.
Eine vorteilhafte Ausgestaltung kann weiterhin vorsehen, dass das lichtbogenfeste Material in Form eines Ringes, stirnsei- tige Flächen des hohlzylindrischen Grundkörpers abdeckend, an dem hohlzylindrischen Grundkörper befestigt ist. Durch ein Abdecken der stirnseitigen Flächen des hohlzylindrischen Grundkörpers ist das elektrische Feld in Richtung der Schaltstrecke der Schalteinrichtung zu wesentlichen Teilen durch die Form des Ringes gesteuert. Dadurch ergibt sich die Möglichkeit, für die Fertigung des Grundkörpers Fertigungsverfahren mit einer geringeren Präzision, beispielsweise einer verminderten Oberflächengüte, einzusetzen, als bei dem für die Feldsteuerung eingesetzten Ring. Weiterhin ist es möglich, den Grundkörper mit verschiedenen Ringformen auszu- rüsten, so dass verschiedene Beeinflussungen des elektrischen Feldes im Bereich der Schaltstrecke der Schalteinrichtung erzielt werden. Weiterhin ist bei einer vollständigen Abdeckung der stirnseitigen Flächen des hohlzylindrischen Grundkörpers der Grundkörper selbst vor dem Einwirken eines Schaltlichtbo- gens geschützt. So kann ein Lichtbogen an vielen Punkten des Ringes angreifen. Damit ist die Standfestigkeit des Ringes erhöht. Die Aufteilung in einen hohlzylindrischen Grundkörper und einen Ring hat darüber hinaus weiter den Vorteil, dass der hohlzylindrische Grundkörper beispielsweise aus einem Ma- terial geringer Dichte, wie beispielsweise Aluminium, herstellbar ist, wodurch die Gesamtmasse des hohlzylindrischen Grundkörpers und des daran befestigten lichtbogenfesten Materials vermindert ist. Lichtbogenfeste Materialien sind beispielsweise Gemische aus den Werkstoffen Molybdän (Mo) , Wolf- ram (W) , Kupfer (Cu) und Silber (Ag) . Als Werkstoff für das lichtbogenfeste Material sind beispielsweise CuCrZr, CuZn39Pb3 oder ECu57 einsetzbar. Diese Materialien weisen eine sehr hohe Dichte auf, wodurch der Ring eine verhältnismäßig hohe Masse aufweist. Insbesondere bei einem Bewegen des mit dem lichtbogenfesten Material ausgestatteten Nennstrom- kontaktstückes ist durch den mehrteiligen Aufbau des Nenn- stromkontaktstückes die zu bewegende Masse begrenzt. Vorteilhafterweise kann weiter vorgesehen sein, dass der Ring an seinem von der Schaltstrecke abgewandten Ende eine geringere radiale Wandstärke aufweist als an seinem der Schaltstrecke zugewandten Ende.An advantageous embodiment can furthermore provide that the arc-proof material in the form of a ring, covering end faces of the hollow cylindrical base body, is attached to the hollow cylindrical base body. By covering the end faces of the hollow cylindrical base body, the electrical field in the direction of the switching path of the switching device is controlled to a large extent by the shape of the ring. This results in the possibility of using manufacturing processes with a lower precision, for example a reduced surface quality, for the manufacture of the base body than with the ring used for field control. Furthermore, it is possible to equip the base body with different ring shapes, so that different influences on the electrical field are achieved in the area of the switching path of the switching device. Furthermore, when the end faces of the hollow cylindrical base body are completely covered, the base body itself is protected against the action of a switching arc. An arc can attack at many points on the ring. This increases the stability of the ring. The division into a hollow cylindrical base body and a ring also has the further advantage that the hollow cylindrical base body can be produced, for example, from a low-density material, such as aluminum, whereby the total mass of the hollow cylindrical base body and the arc-proof material attached to it is reduced , Arc-resistant materials are, for example, mixtures of the materials molybdenum (Mo), tungsten (W), copper (Cu) and silver (Ag). For example, CuCrZr, CuZn39Pb3 or ECu57 can be used as the material for the arc-proof material. These materials have a very high density, which means that the ring has a relatively high mass. In particular when the rated current contact piece equipped with the arc-proof material is moved, the mass to be moved is limited by the multi-part construction of the rated current contact piece. It can advantageously also be provided that the ring has a smaller radial wall thickness at its end facing away from the switching path than at its end facing the switching path.
Aufgrund der bereits oben angesprochenen hohen Dichte weisen selbst kleine Bauteile aus lichtbogenfestem Material eine vergleichsweise hohe Masse auf. Eine Reduzierung der Wandstärken auf das absolut notwendige Minimum gestattet daher, lichtbogenfestes Material einzusparen. Weiterhin kann bei einer gestuften Ausführung des Ringes, wobei das der Schaltstrecke zugewandte Ende eine größere Wandstärke aufweist als das von der Schaltstrecke abgewandte Ende, in einfacher Weise auf den hohlzylindrischen Grundkörper aufgesteckt werden. Durch diese Ausgestaltung der Form des Ringes ist dieser selbsttätig zentrierend auf den hohlzylindrischen Grundkörper aufsteckbar. Dadurch wird eine vereinfachte Montage bewirkt. Gleichzeitig sind die einander berührenden Punkte von hohlzy- lindrischem Grundkörper und lichtbogenfestem Ring aufgrund der vergrößerten Fläche in ihrer Anzahl erhöht. Durch eine erhöhte Anzahl von Berührungspunkten wird der elektrische Übergangswiderstand zwischen dem lichtbogenfesten Ring und dem hohlzylindrischen Grundkörper vermindert.Due to the high density mentioned above, even small components made of arc-proof material have a comparatively high mass. A reduction in the wall thickness to the absolutely necessary minimum therefore allows to save on arc-proof material. Furthermore, in a stepped design of the ring, the end facing the switching section having a greater wall thickness than the end facing away from the switching section, can be simply plugged onto the hollow cylindrical base body. This configuration of the shape of the ring means that it can be automatically centered on the hollow cylindrical base body. This results in a simplified assembly. At the same time, the number of points of contact between the hollow-cylindrical base body and the arc-proof ring is increased due to the increased area. The electrical contact resistance between the arc-proof ring and the hollow cylindrical base body is reduced by an increased number of contact points.
Eine weitere vorteilhafte Ausgestaltung kann vorsehen, dass der Ring mittels einer Verbolzung in axialer Richtung an den hohlzylindrischen Grundkörper des Nennstromkontaktstückes ge- presst ist.A further advantageous embodiment can provide that the ring is pressed against the hollow cylindrical base body of the rated current contact piece in the axial direction by means of a bolt.
Eine Verbolzung in axialer Richtung zwischen dem Ring und dem hohlzylindrischen Grundkörper gestattet es, die äußeren Konturen des Ringes und des hohlzylindrischen Grundkörpers frei von Bohrungen oder anderen Befestigungsmitteln zu halten. Da- mit bleibt die äußere Kontur des Nennstromkontaktstückes erhalten. Weiterhin bleibt durch eine Anordnung der Verbolzun¬ gen in axialer Richtung im Innern des hohlzylindrischen Grundkörpers ein ausreichendes Volumen frei, um beispiels- weise weitere Baugruppen aufzunehmen oder die bei einemA bolting in the axial direction between the ring and the hollow cylindrical base body allows the outer contours of the ring and the hollow cylindrical base body to be kept free of bores or other fastening means. There- with the outer contour of the nominal current contact piece is retained. Furthermore, the Verbolzun ¬ remains gene by an arrangement in the axial direction within the hollow cylindrical base body a sufficient volume free to receive further modules as beispiels- or at a
Schaltvorgang auftretenden Löschgasströme im Innern zu lenken und zu leiten. Zur Verbolzung können beispielsweise Gewindestangen, Verschraubungen, verpresste oder vercrimpte bzw. eingeklebte Bolzen usw. Verwendung finden. Die Bolzen liegen dabei käfigartig mit ihren Längsachsen parallel zu der Zylinderachse des hohlzylindrischen Grundkörpers. Durch eine gleichmäßige Verteilung am Umfang des hohlzylindrischen Grundkörpers kann eine gleichmäßige Anpressung des Ringes gegen den hohlzylindrischen Grundkörper erfolgen.Switching process to direct and direct the extinguishing gas flows occurring inside. For bolting, for example, threaded rods, screw connections, pressed or crimped or glued-in bolts, etc. can be used. The bolts are cage-like with their longitudinal axes parallel to the cylinder axis of the hollow cylindrical base body. A uniform distribution on the circumference of the hollow cylindrical base body enables the ring to be pressed uniformly against the hollow cylindrical base body.
Eine weitere vorteilhafte Ausgestaltung kann vorsehen, dass der hohlzylindrische Grundkörper einen radialen Vorsprung aufweist, gegen welchen mittels eines Druckelementes ein Isolierkörper, insbesondere eine Isolierstoffdüse, axial ge- presst ist.A further advantageous embodiment can provide that the hollow cylindrical base body has a radial projection, against which an insulating body, in particular an insulating material nozzle, is axially pressed by means of a pressure element.
Der radiale Vorsprung stellt einen festen Anschlag für den Isolierkörper dar. Somit ist die Lage des Isolierkörpers bezüglich des hohlzylindrischen Grundkörpers eindeutig festge- legt. Der Einbau des Isolierkörpers erfolgt mittels einesThe radial projection represents a fixed stop for the insulating body. The position of the insulating body with respect to the hollow cylindrical base body is thus clearly defined. The insulator is installed using a
Druckelementes in einer kurzen Zeit. Zusätzliche Messungen, Anpassungen oder Justagen des Isolierkörpers sind somit nicht notwendig. Als Druckelement kann beispielsweise eine ringförmige Scheibe dienen, welche die Anpresskraft gleichmäßig auf den Isolierkörper überträgt. In diesem Falle ist es von Vorteil, wenn der radiale Vorsprung ebenfalls ringförmig umlaufend ausgebildet ist. Vorteilhafterweise kann weiter vorgesehen sein, dass der hohlzylindrische Grundkörper an seinem der Schaltstrecke zugewandten Ende einen verminderten Außendurchmesser aufweist und dass der radiale Vorsprung am Hohlzylinderinnenmantel im Bereich des verminderten Außendurchmessers angeordnet ist.Pressure element in a short time. Additional measurements, adjustments or adjustments of the insulating body are therefore not necessary. An annular disk, for example, can serve as the pressure element, which uniformly transmits the contact pressure to the insulating body. In this case, it is advantageous if the radial projection is also formed in a circular manner. Advantageously, it can further be provided that the hollow cylindrical base body has a reduced outer diameter at its end facing the switching section and that the radial projection on the hollow cylinder inner jacket is arranged in the region of the reduced outer diameter.
Bei einer derartigen Anordnung des radialen Vorsprungs ergibt sich zwischen den Anpressbacken des Vorsprunges und des Druckelementes ein ausreichender Abstand, um die Eigenelasti- zität des Isolierkörpermaterials vorteilhaft zu nutzen. Aufgrund thermischer Einwirkungen kommt es zu Dehnungen bzw. Schrumpfungen des Isoliermaterials. Daher ist es notwendig, bei dem Einsatz einer Klemmverbindung ein ausreichendes Isolierkörpervolumen einzuspannen. Nur so kann bei verschiedenen thermischen Belastungen eine ausreichende Haltekraft auf den Isolierkörper einwirken. Ein zu geringer Spannbereich wäre nicht dazu geeignet, die notwendigen Kräfte dauerhaft aufzubringen. Weiterhin kann der Isolierkörper sehr nahe der Stirnseite des hohlzylindrischen Grundkörpers angeschlagen werden. Dadurch vermindert sich die benötigte Baulänge für die Gesamtkonstruktion der Befestigung des abbrandfesten Ringes sowie der Isolierstoffdüse an dem hohlzylindrischen Grundkörper .With such an arrangement of the radial projection there is a sufficient distance between the pressing jaws of the projection and the pressure element in order to advantageously use the inherent elasticity of the insulating body material. Due to thermal effects, the insulating material expands or shrinks. It is therefore necessary to clamp a sufficient volume of the insulator when using a clamp connection. This is the only way that a sufficient holding force can act on the insulating body at different thermal loads. A clamping range that is too small would not be suitable for permanently applying the necessary forces. Furthermore, the insulating body can be struck very close to the end face of the hollow cylindrical base body. This reduces the overall length required for the overall construction of the attachment of the erosion-resistant ring and the insulating material nozzle to the hollow cylindrical base body.
Eine weitere vorteilhafte Ausgestaltung kann vorsehen, dass der Ring im Bereich seiner vergrößerten radialen Wandstärke Befestigungseinrichtungen auf eist .A further advantageous embodiment can provide that the ring has fastening devices in the area of its increased radial wall thickness.
Abschnitte mit einer vergrößerten Wandstärke gestatten es, flexibel den Ort von Befestigungseinrichtungen zu wählen.Sections with an increased wall thickness allow the location of fastening devices to be chosen flexibly.
Gleichzeitig weisen derartige Abschnitte eine verhältnismäßig große mechanische Festigkeit auf. Als Befestigungseinrichtun- gen sind beispielsweise Gewindebohrungen oder andere Verankerungspunkte vorsehbar.At the same time, such sections have a relatively high mechanical strength. As a fastening device For example, threaded holes or other anchoring points can be provided.
Vorteilhafterweise kann vorgesehen sein, dass im eingeschal- teten Zustand der Schalteinrichtung Kontaktierungspunkte zwischen den beiden Nennstromkontaktstücken axial in dem Bereich des lichtbogenfesten Materials liegen.It can advantageously be provided that when the switching device is switched on, contacting points between the two nominal current contact pieces lie axially in the region of the arc-proof material.
Durch eine Anordnung der Kontaktierungspunkte der beiden Nennstromkontaktstucke im Bereich des lichtbogenfesten Materials ist es von vornherein vermieden, dass bei einem Schaltvorgang die einzelnen Kontaktflächen über Fügestellen hinüberbewegt werden müssen. Dadurch sind die Fügestellen vor einer mechanischen Belastung des Auf- und Abschiebens der entsprechenden Kontaktteile der Nennstromkontaktstucke geschützt. Aus diesem Grunde ist es möglich, die Fügestellen mit einer erhöhten Toleranz zu fertigen. Ein galvanischer Überzug kann an dieser Fügestelle kaum durch eine mechanische Belastung von den Nennstromkontaktstücken abgelöst werden. Damit ist die Standfestigkeit der Kontaktstücke der Schalteinrichtung verbessert.By arranging the contact points of the two nominal current contact pieces in the area of the arc-proof material, it is avoided from the outset that the individual contact surfaces have to be moved over joints in a switching operation. As a result, the joints are protected against mechanical stress when the corresponding contact parts of the rated current contact pieces are pushed on and pushed off. For this reason, it is possible to manufacture the joints with an increased tolerance. A galvanic coating can hardly be detached from the nominal current contact pieces at this joint by mechanical stress. The stability of the contact pieces of the switching device is thus improved.
Im Folgenden wird die Erfindung anhand eines Ausführungsbeispiels in einer Zeichnung schematisch gezeigt und nachfolgend näher beschrieben.In the following, the invention is shown schematically in one drawing using an exemplary embodiment and is described in more detail below.
Dabei zeigt dieThe shows
Figur 1 einen Schnitt durch eine Schalteinrichtung, die1 shows a section through a switching device, the
Figur 2 einen weiteren Schnitt durch die Schalteinrichtung sowie die Figur 3 einen Schnitt durch die in den Figuren 1 und 2 gezeigten Schalteinrichtung entlang der Achse A-A.Figure 2 shows a further section through the switching device and the 3 shows a section through the switching device shown in Figures 1 and 2 along the axis AA.
Die in der Figur 1 dargestellte Schalteinrichtung ist ein Hochspannungsleistungsschalter 1. Ein Hochspannungsleistungsschalter 1 wird eingesetzt, um Nennstrome und Kurzschlussstrome zu schalten. Der Hochspannungsleistungsschalter 1 weist ein erstes Lichtbogenkontaktstuck 2 und ein zweites Lichtbogenkontaktstuck 3 auf. Das erste Lichtbogenkontakt- stuck 2 ist im Wesentlichen zylinderformig ausgestaltet und weist an seinem der Schaltstrecke des Hochspannungsleistungs- schalters 1 zugewandten Ende eine Beschichtung mit einem lichtbogenfesten Material auf. Das zweite Lichtbogenkontaktstuck 3 ist in Form eines Tulpenkontaktes ausgestaltet, in welches das erste Lichtbogenkontaktstuck 2 einfahrbar ist. An seinem der Schaltstrecke zugewandten Ende weist das zweite Lichtbogenkontaktstuck 3 ebenfalls eine Beschichtung aus lichtbogenfestem Material auf. Die beiden Lichtbogenkontaktstucke 2, 3 sind auf einer Hauptachse 4 einander axial gegenüberliegend angeordnet. Konzentrisch zu dem erstenThe switching device shown in FIG. 1 is a high-voltage circuit breaker 1. A high-voltage circuit breaker 1 is used to switch nominal currents and short-circuit currents. The high-voltage circuit breaker 1 has a first arcing contact piece 2 and a second arcing contact piece 3. The first arcing contact piece 2 is essentially cylindrical and has a coating with an arc-resistant material at its end facing the switching path of the high-voltage circuit breaker 1. The second arcing contact piece 3 is designed in the form of a tulip contact into which the first arcing contact piece 2 can be inserted. At its end facing the switching path, the second arcing contact piece 3 likewise has a coating made of arc-proof material. The two arcing contact pieces 2, 3 are arranged axially opposite one another on a main axis 4. Concentric to the first
Lichtbogenkontaktstuck 2 ist ein erstes Nennstromkontaktstuck 5 angeordnet. Konzentrisch zu dem zweiten Lichtbogenkontaktstuck 3 ist ein zweites Nennstromkontaktstuck 6 angeordnet. Das erste Nennstromkontaktstuck 5 weist an seinem der Schalt- strecke zugewandten Ende eine Vielzahl von elastischen Kontaktfingern 7 auf, welche in geschlossenem Zustand des Hoch- spannungsleistungsschalters 1 mit dem Außenmantel des zweiten Nennstromkontaktstuckes 6 in elektrisch leitendem Kontakt stehen. Weiterhin ist das zweite Lichtbogenkontaktstuck 3 von einer Isolierstoffduse 8 umgeben. Die Isolierstoffduse 8 ist an dem zweiten Nennstromkontaktstuck 6 gehalten. Die Nennstromkontaktstucke 5, 6 sowie die Lichtbogenkontaktstucke 2, 3 sind längs der Hauptachse 4 relativ zueinander bewegbar, und zwar derart, dass bei einem Einschaltvorgang zunächst dieArcing contact piece 2, a first nominal current contact piece 5 is arranged. A second rated current contact piece 6 is arranged concentrically with the second arcing contact piece 3. The first rated current contact piece 5 has at its end facing the switching path a multiplicity of elastic contact fingers 7 which are in electrically conductive contact with the outer casing of the second rated current contact piece 6 when the high-voltage circuit breaker 1 is closed. Furthermore, the second arcing contact piece 3 is surrounded by an insulating nozzle 8. The insulating nozzle 8 is held on the second rated current contact piece 6. The rated current contact pieces 5, 6 and the arcing contact pieces 2, 3 can be moved relative to one another along the main axis 4, in such a way that when switching on, the
Lichtbogenkontaktstucke 2, 3 und anschließend die Nennstromkontaktstucke 5, 6 kontaktieren. Bei einem Ausschaltvorgang offnen zunächst die Nennstromkontakte 5, 6, anschließend trennen sich die Lichtbogenkontaktstucke 2, 3. Das zweite Nennstromkontaktstuck 6 weist einen im Wesentlichen hohlzylindrischen Grundkorper βa auf. Der hohlzylindrische Grund- korper βa ist stirnseitig mit einem Ring 9 aus lichtbogenfestem Material bedeckt. Der Ring weist ebenfalls eine im We- sentlichen hohlzylindrische Struktur auf, wobei die derContact arcing contact pieces 2, 3 and then the nominal current contact pieces 5, 6. When the device is switched off, the nominal current contacts 5, 6 first open, and then the arcing contact pieces 2, 3 separate. The second nominal current contact piece 6 has an essentially hollow-cylindrical basic body βa. The hollow cylindrical basic body βa is covered on the end face with a ring 9 made of an arc-proof material. The ring also has an essentially hollow cylindrical structure, with that of the
Schaltstrecke des Hochspannungsleistungsschalters 1 zugewandte Hohlzylinderdeckflache abgerundet ist. Weiterhin ist die Wandstarke des Ringes 9 an der von der Schaltstrecke abgewandten Seite geringer als an seiner der Schaltstrecke zu- gewandten Seite. Dies ist im vorliegenden Ausfuhrungsbeispiel durch eine Vergrößerung des Innendurchmessers des Ringes 9 auf seiner von der Schaltstrecke abgewandten Seite erzielt. Darüber hinaus kann auch ein konischer oder parabelformiger Verlauf der Innenmantelflache des Ringes 9 oder andere geeig- nete geometrische Formen Verwendung finden. Der hohlzylindrische Grundkorper βa weist an seinem der Schaltstrecke zugewandten Ende einen verringerten Außendurchmesser auf. Der verringerte Außendurchmesser des hohlzylindrischen Grundkor- pers 6a sowie der vergrößerte Innendurchmesser des Ringes 9 sind derart aufeinander abgestimmt, dass der Ring 9 auf den hohlzylindrischen Grundkorper 6a aufsteckbar ist. Zur Anpres- sung des Ringes 9 gegen den hohlzylindrischen Grundkorper βa weist der Ring 9 mehrere Gewindebohrungen auf, in welche Bolzen 10 einschraubbar sind. Die Bolzen 10 stutzen sich jeweils an Randern von Ausnehmungen ab, welche parallel zu der Hauptachse 4 im Mantel des hohlzylindrischen Grundkorpers βa symmetrisch verteilt angeordnet sind. Die Oberflache des Ringes 9 ist mit einer galvanischen Schicht überzogen. Diese galva- nische Schicht ist beispielsweise eine Silberschicht. Ebenso ist der hohlzylindrische Grundkörper βa mit einer galvanischen Beschichtung versehen. Im eingeschalteten Zustand des Hochspannungsleistungsschalters 1 ruhen die Kontaktpunkte der elektrischen Kontaktfinger 7 im Bereich 11 des Ringes 9.Switching distance of the high-voltage circuit breaker 1 facing hollow cylinder cover surface is rounded. Furthermore, the wall thickness of the ring 9 is less on the side facing away from the switching path than on its side facing the switching path. In the present exemplary embodiment, this is achieved by increasing the inside diameter of the ring 9 on its side facing away from the switching path. In addition, a conical or parabolic shape of the inner surface of the ring 9 or other suitable geometric shapes can also be used. The hollow cylindrical basic body βa has a reduced outer diameter at its end facing the switching path. The reduced outer diameter of the hollow cylindrical base body 6a and the enlarged inner diameter of the ring 9 are coordinated with one another in such a way that the ring 9 can be plugged onto the hollow cylindrical base body 6a. To press the ring 9 against the hollow cylindrical basic body βa, the ring 9 has a plurality of threaded bores into which bolts 10 can be screwed. The bolts 10 each abut on edges of recesses which are arranged symmetrically distributed parallel to the main axis 4 in the jacket of the hollow cylindrical base body βa. The surface of the ring 9 is coated with a galvanic layer. This galva African layer is for example a silver layer. The hollow cylindrical base body βa is also provided with a galvanic coating. When the high-voltage circuit breaker 1 is switched on, the contact points of the electrical contact fingers 7 rest in the region 11 of the ring 9.
Durch die Anordnung des Ringes 9 aus lichtbogenfestem Material sind auch hohe Schaltleistungen beherrschbar, bei denen es trotz der Verwendung von Lichtbogenkontaktstücken auch an den Nennstromkontaktstücken Schaltlichtbögen auftreten. Der Einsatz des lichtbogenfesten Ringes 9 gestattet eine kompakte Bauweise eines Hochspannungsleistungsschalters .The arrangement of the ring 9 made of arc-proof material means that high switching capacities can also be controlled, in which switching arcs occur even at the nominal current contact pieces despite the use of arcing contact pieces. The use of the arc-proof ring 9 allows a compact design of a high-voltage circuit breaker.
In der Figur 2 ist ein Schnitt durch den aus der Figur 1 bekannten Hochspannungsleistungsschalter 1 dargestellt. Jedoch ist die Schnittebene um die Hauptachse 4 geschwenkt, so dass nunmehr die Befestigung der Isolierstoffdüse 8 erkennbar ist. Die Isolierstoffdüse 8 ist mittels weiterer Bolzen 11, welche in Gewindebohrungen des im Wesentlichen hohlzylindrischen Grundkörpers βa einschraubbar sind, gehalten. Dabei sind die Gewindebohrungen derart ausgerichtet, dass die weiteren Bolzen 11 ebenso wie die Bolzen 10 parallel zur Hauptachse 4 angeordnet sind. Der hohlzylindrische Grundkörper 6a weist einen ringförmigen Vorsprung 12 auf. Gegen den ringförmigen Vorsprung 12 ist eine umlaufende Schulter der Isolierstoff- düse 8 gepresst. Die Anpresskraft der Schulter gegen den ringförmigen Vorsprung 12 wird mittels eines Druckelementes 13 in Form einer Druckscheibe, welche von den weiteren Bolzen 11 gehalten ist, erzeugt. Der ringförmige Vorsprung 12 ist auf der Innenmantelseite des im Wesentlichen hohlzylinderför- migen Grundkörpers 6a angeordnet, und zwar in dem Abschnitt 14, in welchem der Außendurchmesser des hohlzylindrischen Grundkörpers βa vermindert ist. Die Figur 3 zeigt einen Schnitt entlang der in den Figuren 1 und 2 dargestellten Schnittebene A-A. Das Druckelement 13 weist eine ringscheibenförmige Struktur auf, welche Ausnehmungen aufweist, die von den weiteren Bolzen 11 durchsetzt sind. Mittels der weiteren Bolzen 11 wird das Druckelement 13 unter Zwischenlage der vorspringenden Schulter der Isolierstoffdüse 8 gegen den Vorsprung 12 gepresst. Weiterhin ist das Druckelement 13 derart gestaltet, dass zur Erzielung eines geringen Gesamtdurchmessers der Anordnung das Druckele- ment 13 seitliche Ausklinkungen aufweist, um eine Befestigung des Ringes 9 mittels der Bolzen 10 zu ermöglichen. Durch diese konstruktive Gestalt ist es möglich, voneinander unabhängig den Ring 9 bzw. die Isolierstoffdüse 8 zu befestigen. Dadurch sind die beiden Verbindungen voneinander entkoppelt. Etwaige Störungen bzw. thermische Dehnungen etc. der einenFIG. 2 shows a section through the high-voltage circuit breaker 1 known from FIG. 1. However, the section plane is pivoted about the main axis 4, so that the fastening of the insulating material nozzle 8 can now be seen. The insulating material nozzle 8 is held by means of further bolts 11 which can be screwed into threaded bores of the essentially hollow cylindrical base body βa. The threaded bores are aligned such that the further bolts 11, like the bolts 10, are arranged parallel to the main axis 4. The hollow cylindrical base body 6a has an annular projection 12. A circumferential shoulder of the insulating material nozzle 8 is pressed against the annular projection 12. The pressing force of the shoulder against the annular projection 12 is generated by means of a pressure element 13 in the form of a pressure disc, which is held by the further bolts 11. The annular projection 12 is arranged on the inner jacket side of the essentially hollow cylindrical base body 6a, specifically in the section 14 in which the outer diameter of the hollow cylindrical base body βa is reduced. FIG. 3 shows a section along the section plane AA shown in FIGS. 1 and 2. The pressure element 13 has an annular disk-shaped structure which has recesses which are penetrated by the further bolts 11. By means of the further bolts 11, the pressure element 13 is pressed against the projection 12 with the projecting shoulder of the insulating material nozzle 8 being interposed. Furthermore, the pressure element 13 is designed such that, in order to achieve a small overall diameter of the arrangement, the pressure element 13 has lateral notches in order to enable the ring 9 to be fastened by means of the bolts 10. This constructive design makes it possible to fasten the ring 9 or the insulating material nozzle 8 independently of one another. As a result, the two connections are decoupled from one another. Any malfunctions or thermal expansions etc. of some
Verbindungsstelle sind so weitgehend von der anderen Verbindung ferngehalten. Connection points are largely kept away from the other connection.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10353497A DE10353497A1 (en) | 2003-11-11 | 2003-11-11 | switching device |
| PCT/DE2004/002455 WO2005048281A1 (en) | 2003-11-11 | 2004-11-02 | Switching device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1683170A1 true EP1683170A1 (en) | 2006-07-26 |
| EP1683170B1 EP1683170B1 (en) | 2007-09-05 |
| EP1683170B2 EP1683170B2 (en) | 2011-11-02 |
Family
ID=34559661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04802681A Expired - Lifetime EP1683170B2 (en) | 2003-11-11 | 2004-11-02 | Switching device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7679021B2 (en) |
| EP (1) | EP1683170B2 (en) |
| CN (1) | CN100449667C (en) |
| DE (2) | DE10353497A1 (en) |
| WO (1) | WO2005048281A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8232499B2 (en) * | 2009-11-18 | 2012-07-31 | Tyco Electronics Corporation | Contactor assembly for switching high power to a circuit |
| FR2997222B1 (en) | 2012-10-19 | 2015-01-16 | Alstom Technology Ltd | DEVICE FOR ESTABLISHING AND / OR CUTTING CURRENT WITH PERMANENT CONTACTS WITH REDUCED WEAR |
| DE102013200913A1 (en) * | 2013-01-22 | 2014-07-24 | Siemens Aktiengesellschaft | switching arrangement |
| US10002733B2 (en) * | 2016-03-02 | 2018-06-19 | General Electric Technology Gmbh | Internal tulip sleeve of the female arcing contact of a high voltage electric circuit breaker |
| DE102016218518C5 (en) * | 2016-09-27 | 2023-05-11 | Siemens Energy Global GmbH & Co. KG | Contact piece for a high-voltage circuit breaker and method for its manufacture |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE765599C (en) * | 1940-02-25 | 1954-04-29 | Siemens & Halske A G | Process for producing wear-resistant electrical contacts |
| US2504906A (en) * | 1945-08-10 | 1950-04-18 | Westinghouse Electric Corp | Composite metal electric contact member |
| DE837866C (en) * | 1948-12-31 | 1952-11-04 | Forsch Probieramt Fuer Edelmet | Material for electrical switching elements made of galvanically produced silver |
| US3588433A (en) * | 1968-05-23 | 1971-06-28 | Gen Electric | Arcing contact structure and method of making same |
| DE4230060A1 (en) * | 1992-09-07 | 1994-03-10 | Siemens Ag | Circuit breaker with movable contacts under insulating gas - has one contact member with galvanically deposited hard silver@ layer |
| FR2715499B1 (en) † | 1994-01-25 | 1996-03-15 | Gec Alsthom T & D Sa | Self-blowing circuit breaker with pneumatically locked piston. |
| US5478980A (en) † | 1994-04-05 | 1995-12-26 | Abb Power T&D Company, Inc. | Compact low force dead tank circuit breaker interrupter |
| DE19530512C1 (en) * | 1995-08-18 | 1996-10-17 | Siemens Ag | Electrical layered contact element used in weak current relays |
| DE19738697C1 (en) † | 1997-08-29 | 1998-11-26 | Siemens Ag | High voltage load switch with driven counter contact piece |
| DE19747840A1 (en) * | 1997-10-20 | 1999-05-06 | Siemens Ag | HV circuit breaker with tulip-shaped contact tip |
| DE19837945A1 (en) * | 1998-08-21 | 2000-02-24 | Asea Brown Boveri | Circuit arrangement and method for its manufacture |
| DE19902835C2 (en) * | 1999-01-20 | 2001-12-06 | Siemens Ag | High-voltage circuit breaker with an insulating nozzle |
| DE19910166C2 (en) † | 1999-02-24 | 2001-01-25 | Siemens Ag | High-voltage circuit breaker with a compression device |
| DE19928080C5 (en) * | 1999-06-11 | 2006-11-16 | Siemens Ag | High voltage circuit breaker with a discharge channel |
-
2003
- 2003-11-11 DE DE10353497A patent/DE10353497A1/en not_active Withdrawn
-
2004
- 2004-11-02 DE DE502004004908T patent/DE502004004908D1/en not_active Expired - Lifetime
- 2004-11-02 EP EP04802681A patent/EP1683170B2/en not_active Expired - Lifetime
- 2004-11-02 CN CNB2004800307067A patent/CN100449667C/en not_active Expired - Fee Related
- 2004-11-02 WO PCT/DE2004/002455 patent/WO2005048281A1/en not_active Ceased
- 2004-11-02 US US10/578,523 patent/US7679021B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005048281A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1683170B2 (en) | 2011-11-02 |
| DE502004004908D1 (en) | 2007-10-18 |
| CN1871678A (en) | 2006-11-29 |
| EP1683170B1 (en) | 2007-09-05 |
| US7679021B2 (en) | 2010-03-16 |
| CN100449667C (en) | 2009-01-07 |
| DE10353497A1 (en) | 2005-06-09 |
| US20070074963A1 (en) | 2007-04-05 |
| WO2005048281A1 (en) | 2005-05-26 |
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