EP4059035A1 - Vakuumleistungsschalter mit verschweissbar ausgestalteten kupferschaltkontakten - Google Patents
Vakuumleistungsschalter mit verschweissbar ausgestalteten kupferschaltkontaktenInfo
- Publication number
- EP4059035A1 EP4059035A1 EP20816117.4A EP20816117A EP4059035A1 EP 4059035 A1 EP4059035 A1 EP 4059035A1 EP 20816117 A EP20816117 A EP 20816117A EP 4059035 A1 EP4059035 A1 EP 4059035A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- aluminum
- contact pieces
- electrical
- circuit breaker
- 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
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 24
- 239000010949 copper Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 63
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 51
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 50
- 238000000576 coating method Methods 0.000 claims abstract description 38
- 239000011248 coating agent Substances 0.000 claims abstract description 36
- 238000012546 transfer Methods 0.000 claims abstract description 25
- 238000003466 welding Methods 0.000 claims abstract description 22
- 238000005507 spraying Methods 0.000 claims abstract description 12
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 238000010894 electron beam technology Methods 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 19
- 229910052751 metal Inorganic materials 0.000 description 17
- 239000002184 metal Substances 0.000 description 17
- 239000004020 conductor Substances 0.000 description 16
- 230000000712 assembly Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000010288 cold spraying Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002296 dynamic light scattering Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000003746 surface roughness 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/6606—Terminal arrangements
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches
-
- 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
- H01H11/048—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by powder-metallurgical processes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches
- H01H2001/0205—Conditioning of the contact material through arcing during manufacturing, e.g. vacuum-depositing of layer on contact surface
Definitions
- the present invention relates to a method for the produc- tion of an electrical switching contact arrangement for a vacuum circuit breaker, the method comprising at least the steps: a) providing two electrical contact pieces made of copper or a copper alloy; b) Be coating the electrical contact pieces with aluminum or an aluminum alloy, the contact piece being coated using a cold gas spraying process; c) Welding the side coated in process step b), each with a current transfer contact; and d) arranging the units obtained in step b) within the vacuum circuit breaker.
- the invention further relates to an electrical switching contact arrangement for a vacuum circuit breaker with the contact pieces produced by the method according to the invention.
- Vacuum circuit breakers for switching medium and high voltages have long been state of the art. This design is robust and has proven itself particularly for absorbing high currents. The disadvantage, however, is that for the switching contacts, due to the absorption of high breaking currents and the associated high forces of the arc plasma, only certain materials are rials are suitable. From these structural constraints, there is only a very limited choice of materials and, accordingly, only limited manufacturing options for these components located on the direct switching path of the current.
- the contact bolts of a vacuum interrupter are preferably made of copper or copper alloys due to their thermal and electrical properties, which can then only be connected to other components of the vacuum circuit-breaker to a very limited extent mechanically by screwing or clamping. These purely mechanical fastening options can be cumbersome and prone to failure.
- EP 0203 367 A1 describes a contact arrangement for vacuum switches, with two contacts arranged coaxially opposite one another and displaceable in their axial direction relative to one another, each consisting of a disc-shaped contact piece with a contact surface and a disc located behind it from electrically good conductive material, which the latter are directly connected to the central power supply bolt and through their shape with circular recesses and slots create radial and azimuthal current conductors and thus means for generating axial magnetic fields, whereby -the current from the power supply bolt via the current conductor the disk is guided to the contact piece, characterized by the following features: a) The slots run from the periphery of the disk tangentially to the circular Aussparun conditions, b) the slots and the recesses are each webs for current management between the disk and con clock piece be limited, c) the contacts arranged opposite one another are oriented azimuthally in such a way that the circular cutouts of the two opposite disks are congruent in the axial direction, the associated
- DE 3347 550 Al discloses a composite material made of chromium and copper, in particular for electrical contact pieces in vacuum switches for medium to high voltages in power engineering, the material being made of a chromium framework impregnated with copper or copper alloys, the The material contains carbon, which is partly in the form of free graphite and partly in the form of bonded metal carbides, for which the chromium structure also has a content of one or more of the metals nickel, cobalt or iron in an amount of 0.05 to 2 parts by weight in%.
- EP 1831 903 B1 discloses a vacuum interrupter chamber with a first and a second contact piece for switching an electric current flowing through the vacuum interrupter chamber in the closed switching state and with at least one heat pipe containing a working medium for dissipating heat generated by the electric current in the vacuum interrupter chamber, wherein the heat pipe comprises a section called the evaporator and a section of the heat pipe called the condenser, the heat pipe having a flexibly deformable section.
- the object of the present invention to at least partially overcome the disadvantages known from the prior art. It is in particular the object of the present invention to provide a solution which is characterized by a ne particularly advantageous mechanical and electrical connection of the electrical contact pieces to the further structure of a vacuum interrupter chamber.
- the object is achieved according to the invention at least in part by a method with the features of claim 1 and by an electrical contact arrangement with the features of claim 7.
- the present invention thus relates to a method for producing an electrical switching contact arrangement for a vacuum circuit breaker comprising two electrical contact pieces which can be contacted with one another, the method comprising at least the steps: a) providing two electrical contact pieces made of copper or a copper alloy; b) Coating in each case at least one side of the electrical contact pieces with aluminum or an aluminum alloy, the contact piece being coated using a cold gas spraying process and at least one coated side facing the contact side of the two contact pieces; c) welding the side of the contact pieces coated with aluminum in process step b), each with a current transfer contact; d) Arranging the units of contact piece and current transfer contact obtained in step b) within the vacuum circuit breaker.
- the method according to the invention is a method for the produc- tion of an electrical switching contact arrangement for a vacuum circuit breaker comprising two electrical contact pieces which can be contacted with one another.
- Vacuum interrupters usually consist of a cylindrical, evacuated, insulating ceramic housing in which there are two switching contacts. One of the two switching contacts is fixed, whereas the other switching contact is movably arranged. The ends of the ceramic housing are metallized at the end faces and soldered to metallic flanges. In order to transmit the movement of the movable contact from the outside into the interior of the vacuum chamber, it is connected to the housing via a metal bellows.
- a metal vapor shield made of copper or stainless steel is attached in the area of the contacts.
- the metal vapor screen can be potential-free or connected to one of the contacts.
- the metal bellows can also be capped for protection.
- appropriate shields can be integrated.
- the two contact pieces form parts of the switching contact arrangement and can, depending on the position from the two contact pieces, contact or not.
- the current arresters which forward the currents conducted through the contact pieces, can also be counted as part of the switching contact arrangement.
- two electrical contact pieces made of copper or a copper alloy are provided.
- the electrical contact pieces consist entirely of copper or can also comprise copper alloys. Alloys of copper and chromium with a chromium content of 25-50%, for example, have also been shown to be suitable as ge.
- the contact pieces can have any geometry. However, cylindrical geometries which each have two end faces and a lateral surface have proven to be particularly favorable. One end face is responsible for the mechanical and electrical contacting of the other contact piece when the vacuum interrupter is in operation, whereas the other end face of the contact piece is then equipped according to the invention with an aluminum coating and welded to the current conductor.
- the coating takes place at least one side of the electrical contact pieces with aluminum or an aluminum alloy, the contact piece being coated using a cold gas spraying process and at least one coated side of the contact side opposite that of the contact pieces.
- Cold gas spraying or cold gas spraying is a coating method for metals in which a powdery metal material, metal alloys is applied to a substrate at high speeds. Due to the high kinetic energy of the powder, it binds to the substrate.
- the gas can preferably be nitrogen and this is accelerated to supersonic speed by means of high pressure and by means of a nozzle. Heating up the gas jet can increase the flow speed of the gas and thus also increase the particle speed. The associated heating of the particles can cause them to deform on impact.
- Powders made of aluminum or aluminum alloys can be suitable for coating.
- aluminum powders with a monodisperse size distribution around a D50 value between 10 and 250 ⁇ m have proven to be particularly suitable (measured by means of dynamic light scattering).
- These powders can form layers that are particularly mechanically resilient and these layers also only have a small proportion of air inclusions. This can help one Maintain the best possible vacuum within the vacuum tube.
- process step c) the side of the contact pieces coated with aluminum in process step b) is welded, each with a current transfer contact.
- the mechanical and electrical connection of the individual contact pieces to the respective current transfer contact is therefore not effected via a copper layer but rather via the aluminum layer according to the invention applied using a cold gas spraying process.
- Direct welding of a copper layer or a copper alloy layer to the current transfer contact which can usually also be made of copper, is technically not possible.
- the welding of the aluminum layer with the current transfer contact can take place by the welding methods known from the prior art.
- the units obtained in process step b) from the contact piece and Stromübergangskon are arranged within the vacuum circuit breaker.
- the units of contact piece and current transfer contact can be installed in the vacuum chamber of the vacuum circuit breaker.
- further components of the vacuum circuit breaker such as a metal bellows or the end seals, can be connected to the units in any way.
- the welded connection can be located inside or outside the vacuum chamber after installation. This results as a function of the geometry of the contact piece and the current transfer contact.
- adjacent areas of the two contact pieces can also be coated with aluminum or an aluminum alloy using a cold gas spraying method.
- the contact pieces are provided with an aluminum coating at the desired connection point to the current arrester.
- additional surfaces of the contact piece are also provided with an aluminum coating.
- An adjacent area which is suitable for this is, for example, the jacket area of the contact piece. If the contact piece is, for example, cylindrically shaped, the coating is applied once to one end face and to at least part of the cylinder jacket adjoining it. This coating can contribute to improved electrical properties of the contact piece. Furthermore, this configuration can enable a more uniform coating of the end face of the contact piece.
- the side opposite the contact side can be coated with a constant layer thickness in method step b).
- a coating of the contact piece with a constant layer thickness has proven to be particularly suitable.
- a constant layer thickness can be assumed in those cases in which the layer thickness varies by less than 10% over the area under consideration, for example the front side.
- suitable layer thickness ranges for a reliable connection between the current arrester and the contact piece can be between 500 ⁇ m and, for example, 3 cm.
- the cold gas sprayed aluminum coating can be mechanically processed after application.
- the applied aluminum coating is subjected to a further mechanical processing step.
- This mechanical one The processing step can include, for example, smoothing the layer by means of a grinding process. But it is also possible that the aluminum layer is reduced somewhat in thickness by an ablation process. For this purpose, turning or lapping of this layer can be suitable, for example.
- the aluminum coating can also be given a particularly suitable, low surface roughness, for example by means of a smoothing process, which leads to improved mechanical adhesion during the welding process.
- the welding method in method step c) can be an electron beam welding method.
- the connection of the applied aluminum layer with the further current transfer contact or current conductor via an electron beam welding process has proven to be particularly suitable with regard to the mechanical and electrical properties of the connection.
- the electron beam welding process can in particular result in the connection between the two parts being formed particularly homogeneously, which can also contribute to a particularly homogeneous dissipation of the currents within the vacuum interrupter.
- the mechanical forces that occur can be absorbed particularly advantageously via the homogeneous connection.
- the weldable surface of the current transfer contact can have partially silver-plated contact surfaces.
- the current transfer contact has areas on the contact surface for the aluminum coating of the contact piece which are silver-plated.
- the silver-plated areas on the current transfer contact can preferably have a size of 5% to 25% of the total area of the current transfer contact.
- an electrical switching contact arrangement for a vacuum circuit breaker comprising two opposing contact pieces each made of at least one two-layer metallic composite material with a layer of copper and a layer of aluminum or their alloys, the surfaces of the contact pieces being aligned with one another
- the copper layers and the surfaces of the contact pieces facing away therefrom have the aluminum layers, one or both switching contact pieces of the electrical switching contact arrangement being obtained by the method according to the invention and the contact pieces being welded to one current transfer contact of the vacuum circuit breaker.
- the electrical switching contact arrangement for a vacuum circuit breaker accordingly has two contact pieces, the contact pieces each individually having a layer which was applied by means of a cold gas spraying process.
- This further layer of aluminum adheres very well to copper and is welded to the further current conductor using a welding process.
- This configuration eliminates the measures usually carried out to connect the contact piece and current conductor, such as screwing or clamping.
- a homogeneous adhesion is obtained between the contact piece and the current conductor, which in particular also leads to the electrical currents occurring during switching being dissipated homogeneously and evenly through the contact piece and the current conductor.
- the layer thickness of the aluminum coating on the side opposite the contact side and / or the lateral surface can be greater than or equal to 1 mm and less than or equal to 20 mm.
- These layer thicknesses of the aluminum coating have proven to be a mechanically permanent and electrically advantageous connection of the contact piece to the Tried and tested current arrester. The result is a low-maintenance vacuum circuit breaker whose electrical performance is only insignificantly reduced by the aluminum layer. Smaller layer thicknesses can be disadvantageous, since in this case the layer thickness is insufficient for welding. Larger layer thicknesses can be disadvantageous, since in this case the electrical properties of the unit consisting of contact piece and current conductor are significantly reduced.
- the layer thickness of the aluminum coating on the opposite side of the contact side can be greater than or equal to 2.5 mm and less than or equal to 20 mm and the coating on the outer surface greater than or equal to 1 mm and less than or equal to 7.5 mm.
- the layer thickness on the jacket layer of the contact piece does not reach the same thickness as the coating on the end face. This difference in thickness can contribute to a particularly favorable discharge of currents occurring in the area of the unit comprising contact piece and current conductor or current transfer contact.
- the thickness ratio between the copper and aluminum layer of the contact piece is greater than or equal to 4 and less than or equal to 15.
- the electrical performance is essentially not reduced and improved mechanical properties of the unit comprising contact piece and current arrester are obtained.
- Fig. 1 is a schematic overview of the assemblies egg nes vacuum circuit breaker from the prior art in a plan
- FIG. 2 shows a schematic overview of the assemblies of a vacuum circuit breaker from the prior art in cross section
- Fig. 3 is a schematic overview of the assemblies egg nes vacuum circuit breaker according to the invention in cross section;
- FIG. 4 shows a schematic overview of two contact pieces, each with an aluminum coating on the end face and partially on the outer surface;
- Fig. 5 is a schematic overview of a Greanord voltage of two units according to the invention of contact piece and current conductor in cross section.
- the vacuum circuit breaker 1 shows schematically the structure of a vacuum circuit breaker 1.
- the vacuum circuit breaker 1 has two contact pieces 4, 5, of which one of the contact pieces is movable and one of the contact pieces is fixed.
- the vacuum circuit breaker 1 also has a metal vapor screen 2 and an outer insulator 3.
- the contact piece 4 is on the Current arrester 6 connected to the further electrical network.
- the contact piece 5 is connected to the current conductor 7 with the wide Ren electrical network.
- the contact pieces 4, 5 can each be connected to the corresponding current arrester 6, 7, for example via a clamp connection or a screw connection.
- FIG. 2 also shows schematically the structure of a vacuum circuit breaker 1.
- the vacuum circuit breaker 1 has two contact pieces 4, 5, of which in this game the contact piece 4 is movable and the contact piece 5 is fixed.
- the vacuum circuit breaker 1 can also have a metal vapor screen 2, a metal bellows 8, a protective cap 9 for the metal bellows 8 and an outer insulator 3.
- the contact piece 4 is connected to the further electrical network via the current arrester 7.
- the contact piece 5 is connected to the current conductor 6 with the further electrical network.
- the contact pieces 4, 5 can each be connected to the corresponding current arrester 6, 7, for example via a clamp connection or a screw connection.
- FIG. 3 shows schematically the structure of a vacuum circuit breaker 1 according to the invention.
- the vacuum circuit breaker 1 comprises two contact pieces 4, 5, of which, in this example, the contact piece 4 is movable and the contact piece 5 is fixed.
- the vacuum circuit breaker 1 can also have a metal vapor screen 2, a metal bellows 8, a protective cap 9 for the metal bellows 8 and an outer insulator 3.
- the contact piece 4 is connected to the further electrical network via the current arrester 7.
- the contact piece 5 is connected to the current arrester 6 with the further electrical network rule.
- the contact pieces 4, 5 each have a cold gas-sprayed aluminum layer 10 on their end faces or surfaces.
- the respective contact piece 4, 5 was the corresponding current arrester or current transfer contact 6, 7 over a welded joint 11 mechanically connected.
- the result is a mechanically extremely stable unit which is exposed to significantly fewer mechanical disturbances and errors.
- the dimensions of the contact pieces 4.5 in relation to the thickness of the aluminum coating 10 result in very good electrical properties for the unit made up of contact pieces 4, 5 and current arresters 6.7.
- the welded connection points 11 are located within the vacuum chamber. It is also possible to arrange one of the welding points 11 inside and one of the welding points 11 outside the vacuum chamber.
- FIG. 4 schematically shows contact pieces 4, 5 according to the invention, each with a cold gas-sprayed aluminum layer 10.
- the coating was carried out uniformly, it being evident here that both the end face and the jacket layer of the contacts were coated. This coating can contribute to particularly favorable electrical and mechanical properties of the vacuum circuit breaker 1.
- FIG. 5 schematically shows a configuration according to the invention for connecting the contact pieces 4, 5 and the current collectors 6, 7.
- the aluminum layers 10 sprayed with cold gas and the welded connections 11 to the current arresters are shown in each case.
- the welded connection points 11 are located outside of the vacuum chamber.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Contacts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019219879.1A DE102019219879B4 (de) | 2019-12-17 | 2019-12-17 | Verfahren zum Herstellen von verschweißbar ausgestalteten Kupferschaltkontakten und Vakuumleistungsschalter mit solchen Kontaktstücken |
PCT/EP2020/082400 WO2021121832A1 (de) | 2019-12-17 | 2020-11-17 | Vakuumleistungsschalter mit verschweissbar ausgestalteten kupferschaltkontakten |
Publications (3)
Publication Number | Publication Date |
---|---|
EP4059035A1 true EP4059035A1 (de) | 2022-09-21 |
EP4059035C0 EP4059035C0 (de) | 2023-11-08 |
EP4059035B1 EP4059035B1 (de) | 2023-11-08 |
Family
ID=73642861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20816117.4A Active EP4059035B1 (de) | 2019-12-17 | 2020-11-17 | Vakuumleistungsschalter mit verschweissbar ausgestalteten kupferschaltkontakten |
Country Status (5)
Country | Link |
---|---|
US (1) | US12068118B2 (de) |
EP (1) | EP4059035B1 (de) |
CN (1) | CN114830280A (de) |
DE (1) | DE102019219879B4 (de) |
WO (1) | WO2021121832A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020210183A1 (de) * | 2020-08-12 | 2022-02-17 | Siemens Energy Global GmbH & Co. KG | Hochspannungsleistungsschalter und Verfahren zum Herstellen eines Hochspannungsleistungsschalters |
DE102020211516A1 (de) * | 2020-09-14 | 2022-03-17 | Siemens Energy Global GmbH & Co. KG | Hochspannungsleistungsschalter mit Kontakthülse und Verfahren zum Herstellen des Hochspannungsleistungsschalters |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1214697A (en) | 1967-08-05 | 1970-12-02 | Siemens Ag | Heterogeneous metallic compositions suitable for use as a contact material for vacuum switches |
DE3347550A1 (de) | 1983-12-30 | 1985-07-11 | Siemens AG, 1000 Berlin und 8000 München | Verbundwerkstoff aus chrom und kupfer, verfahren zu dessen herstellung sowie formteilkontaktstueck aus diesem werkstoff |
DE3664394D1 (en) | 1985-05-06 | 1989-08-17 | Siemens Ag | Contact arrangement for a vacuum system |
JP2908073B2 (ja) | 1991-07-05 | 1999-06-21 | 株式会社東芝 | 真空バルブ用接点合金の製造方法 |
US6071389A (en) * | 1998-08-21 | 2000-06-06 | Tosoh Smd, Inc. | Diffusion bonded sputter target assembly and method of making |
US6172317B1 (en) * | 1999-11-03 | 2001-01-09 | Vacuum Electric Switch Co. | Foam encapsulated vacuum interrupter module removably mounted in a housing |
JP2003031066A (ja) * | 2001-07-17 | 2003-01-31 | Hitachi Ltd | 電極、その製造方法、遮断器、その加工方法及び生産物 |
US7758917B2 (en) | 2004-09-25 | 2010-07-20 | Abb Technology Ag | Method of producing an arc-erosion resistant coating and corresponding shield for vacuum interrupter chambers |
EP1672655A1 (de) | 2004-12-20 | 2006-06-21 | Abb Research Ltd. | Vakuumschalter mit grosser Stromtragfähigkeit |
TW200710905A (en) * | 2005-07-07 | 2007-03-16 | Hitachi Ltd | Electrical contacts for vacuum circuit breakers and methods of manufacturing the same |
JP4765538B2 (ja) * | 2005-10-20 | 2011-09-07 | 富士電機機器制御株式会社 | 真空バルブ、真空バルブの製造方法 |
FR2903221B1 (fr) * | 2006-06-30 | 2013-12-20 | Schneider Electric Ind Sas | Procede de fixation d'un element dans un appareil electrique et appareil electrique tel une ampoule a vide comportant au moins deux parties fixees suivant un tel procede |
JP2008192610A (ja) * | 2007-01-12 | 2008-08-21 | Furukawa Electric Co Ltd:The | 電気接点材料、その製造方法、及び電気接点 |
EP1997574A1 (de) * | 2007-06-01 | 2008-12-03 | ABB Technology AG | Verfahren zur Herstellung eines Kontaktteils für eine Schaltanlage sowie eines Kontaktteils an sich |
US9337002B2 (en) * | 2013-03-12 | 2016-05-10 | Lam Research Corporation | Corrosion resistant aluminum coating on plasma chamber components |
DE102013204775A1 (de) | 2013-03-19 | 2014-09-25 | Siemens Aktiengesellschaft | Verfahren zum Erzeugen eines Bauteils einer Vakuumschaltröhre |
JP2013239437A (ja) * | 2013-05-02 | 2013-11-28 | Tanaka Kikinzoku Kogyo Kk | リベット型接点及びその製造方法 |
US10446336B2 (en) * | 2016-12-16 | 2019-10-15 | Abb Schweiz Ag | Contact assembly for electrical devices and method for making |
-
2019
- 2019-12-17 DE DE102019219879.1A patent/DE102019219879B4/de active Active
-
2020
- 2020-11-17 US US17/786,696 patent/US12068118B2/en active Active
- 2020-11-17 CN CN202080088250.9A patent/CN114830280A/zh active Pending
- 2020-11-17 WO PCT/EP2020/082400 patent/WO2021121832A1/de unknown
- 2020-11-17 EP EP20816117.4A patent/EP4059035B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
US12068118B2 (en) | 2024-08-20 |
EP4059035C0 (de) | 2023-11-08 |
DE102019219879A1 (de) | 2021-06-17 |
EP4059035B1 (de) | 2023-11-08 |
US20230017027A1 (en) | 2023-01-19 |
CN114830280A (zh) | 2022-07-29 |
DE102019219879B4 (de) | 2023-02-02 |
WO2021121832A1 (de) | 2021-06-24 |
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