JP7600368B2 - High-voltage circuit breaker and method for manufacturing the same - Google Patents

Description

The present invention relates to a high-voltage circuit breaker having at least one vacuum shutoff valve supported by at least one holder of the high-voltage circuit breaker, and a method for manufacturing the high-voltage circuit breaker.

The high-voltage circuit breaker is designed to interrupt voltages in the voltage range up to 1200 kV and current range up to several thousand amperes. It comprises, for example, a housing with at least one switching contact on a support. The housing is, for example, an insulator made of, in particular, ceramic, silicone and/or composite material, for example, a cylindrical hollow body, in particular with a number of umbrella-shaped ribs on the outer periphery in order to extend the creepage current. In contrast to the insulator-type high-voltage circuit breaker, the tank-type high-voltage circuit breaker has a grounded housing, which is, for example, a hollow cylindrical metal tank in which at least one switching contact is arranged.

The switching contacts include at least two contacts, for example one fixed contact and one movable contact, which are made of a conductive material, for example steel, aluminum and/or copper. Alternatively or additionally, a switching contact can include, for example, at least two movable contacts. In this case, an embodiment with two movable contacts is similar to the one fixed contact and one movable contact of the present invention and will not be described further below for the sake of simplicity. The contacts of the switching contacts are arranged in the high-voltage circuit breaker or are supported by a number of holders, in particular movably or fixedly supported, and in particular hermetically sealed by a housing.

The housing is filled with an insulating or interrupting gas, in particular _SF6 and/or clean air. The switching contacts, which include, for example, rated current contacts and/or arcing contacts, are electrically insulated by the interrupting gas from certain devices of the high-voltage circuit breaker, for example from the driving device and surroundings. Interrupting gases such as _SF6 can be hazardous to the weather and/or contain toxic components. To prevent the interrupting gas from escaping from the high-voltage circuit breaker, a gas-tight and permanent seal of the housing is required, which is complex, expensive and costly. Environmentally friendly disposal of the interrupting gas, in particular, at the end of the life of the high-voltage circuit breaker is also complex and costly. An environmentally friendly alternative is to use a vacuum valve in the typical housing described above.

The use of the exemplary housing as described above allows for simple and cost-effective replacement of high voltage circuit breakers in power systems, and particularly simple and cost-effective manufacture of large numbers of high voltage circuit breakers. To replace environmentally harmful interrupting gases, such as _SF6 , with environmentally friendly interrupting gases, such as clean air, i.e., dry and purified air, it is necessary to replace the rated current system and arcing contact system with a vacuum interrupter in order to maintain the required insulation distance in the exemplary housing.

The vacuum shutoff valve is arranged and connected in a mechanically stable and electrically conductive manner inside the housing between at least two external electrical connections, which are in the form of, for example, connection terminals for the connection of high-voltage cables, generators and/or electricity users.

The structure of a vacuum shutoff valve for a high-voltage circuit breaker is known, for example, from US Pat. No. 5,399,366. The vacuum shutoff valve has a circular, straight cylindrical housing, the inside of which is evacuated. The housing consists of two identical, for example straight cylindrical halves made of ceramic or ceramic parts, which are connected in the middle of the housing with transition pieces via a metal cylinder or a metal part. The transition pieces are designed as shield electrodes or shields in the housing.

The vacuum shutoff valve has at least one electrical contact for opening and closing, which has one fixed contact and one movable contact. The contacts are configured in a dish-like manner in the vacuum shutoff valve and are vacuum-sealed. The contacts are guided outwardly in the form of a bolt and are each connected to an external electrical connection, for example in the form of a connection terminal of a high-voltage circuit breaker. The movable contact is guided and supported movably in the vacuum shutoff valve in a vacuum-tight manner via a bellows.

When closing, the movable contact moves towards the fixed contact until mechanical and electrical contact is established between them. When breaking, the movable contact is moved away from the fixed contact until electrical contact between the contacts is interrupted and the distance between them is sufficient to avoid electrical flashover at the applied voltage. A large distance between the contacts is necessary at high voltages. The vacuum interruption valve is made long in order to ensure a sufficient distance inside. The straight cylindrical half of the vacuum interruption valve, made of ceramic or ceramic parts, consists of several parts, for example, which are connected with several transitions via several metal parts. These transitions are each made as a shield electrode or shield in the housing. The joining of the ceramic parts of the housing via the metal parts, made of copper and/or steel, is performed, for example, by brazing.

The connection of the contacts of the vacuum interrupter to, in particular, the holders for supporting the contacts and thus to the drive and/or to the fixed conductive parts of the high-voltage circuit breaker is effected by clamping. The holders are, for example, made of aluminum and/or steel. The low mass of aluminum allows the acceleration of the drive to be transmitted to the moving contact with little energy consumption, and the fixed contacts can be fixed simply and inexpensively in the high-voltage circuit breaker in a lightweight holder. The contacts of the vacuum interrupter are, for example, made of copper for high current carrying properties. The connection of the contacts to the respective holder is effected by clamping, in particular between the aluminum and the copper parts. The mating clamping connection involves two electrical contact points, which lead to excessive heating and electrical losses in the circuit breaker. At very high currents, up to several thousand amperes, very high electrical losses can occur and high temperatures in the circuit breaker can lead to damage and/or destruction. For example, clamp connections that are clamped by screwing are removable and technically complex, which results in a high failure rate and high costs.

European Patent Application Publication No. EP 0 102 317 A2

The object of the present invention is to provide a high-voltage circuit breaker that solves the above-mentioned problems, and a method for manufacturing the high-voltage circuit breaker, particularly the above-mentioned high-voltage circuit breaker. In particular, the object is to provide a high-voltage circuit breaker in which at least one vacuum shutoff valve is arranged and supported in a mechanically stable manner, and in which electrical loss is small in the closed state and heat generation is small, particularly when a large current is applied.

This problem is solved by a high-voltage circuit breaker having the features of patent claim 1 and/or by a method for manufacturing a high-voltage circuit breaker, in particular the aforementioned high-voltage circuit breaker, according to patent claim 11. Advantageous configurations of the high-voltage circuit breaker according to the invention and/or of the method for manufacturing a high-voltage circuit breaker according to the invention, in particular the aforementioned high-voltage circuit breaker, are set out in the dependent claims. The subject matter of the main claims can be combined with one another and with the features of the dependent claims, and the features of the dependent claims can be combined with one another.

The high-voltage circuit breaker according to the present invention includes at least one vacuum shutoff valve, which is supported by at least one holder of the high-voltage circuit breaker. The at least one vacuum shutoff valve is inseparably connected to the at least one holder.

Unlike separable or reattachable clamp and/or screw connections, the non-separable connection between the at least one vacuum shutoff valve and the at least one holder allows a good current flow with high mechanical stability and low contact resistance, which results in lower temperatures, lower electrical losses and less heat generation than with clamp and/or screw connections, especially when high currents in the range of up to several thousand amperes flow. Damage and/or destruction of the high-voltage circuit breaker with vacuum shutoff valve can thus be avoided or prevented. The non-separable connection can be easily and inexpensively implemented, and its high mechanical stability leads to a high durability and service life as well as high reliability of the high-voltage circuit breaker.

The at least one vacuum shutoff valve may have at least one fixed contact and at least one movable contact, with at least one holder on the side of the at least one fixed contact and at least one holder on the side of the at least one movable contact. Alternatively or additionally, it may include two movable contacts. By inseparably coupling the at least one fixed contact and/or the at least one movable contact to a respective holder, the above-mentioned advantages can be realized.

The at least one vacuum shutoff valve can be inseparably connected to the at least one holder by a welded connection, in particular by an electron beam welded connection. A welded connection, in particular an electron beam welded connection, has high mechanical stability, is easy and cheap to manufacture and allows good current flow through the welded connection, in particular at high currents, with low electrical losses and low heat generation.

The at least one vacuum shutoff valve can be inseparably connected to the at least one holder by means of an intermediate part in each case. The intermediate part allows for a simple, inexpensive and mechanically stable connection between the contacts of the vacuum shutoff valve and the holder with a particularly low contact resistance.

The intermediate part can comprise at least two parts, in particular exactly two parts, in particular a part made of copper and a part made of aluminum, which are inseparably connected to one another in a material-bonding manner, in particular by explosive welding and/or roll bonding. An intermediate part having the above-mentioned properties allows a mechanically stable connection between the contacts and the holder of the vacuum shut-off valve at low cost and with a particularly low contact resistance.

In particular, intermediate parts are produced which have high mechanical stability and low electrical resistance due to the material bonding of two parts, in particular an aluminum part and a copper part, by explosive welding and/or roll joining.

The at least one vacuum shutoff valve, in particular the at least one fixed contact and the at least one movable contact of the at least one vacuum shutoff valve, can each be connected to an intermediate part, in particular by electron beam welding, and/or the intermediate part can comprise two parts of different materials, which can be inseparably connected to one another in a material-bonding manner by explosive welding and/or roll joining, and/or the intermediate parts can each be inseparably connected to at least one holder, in particular by electron beam welding. This leads to the above-mentioned advantages, in particular to a high-voltage circuit breaker with high reliability and durability, which in the closed state has low electrical losses through the high-voltage circuit breaker, low heat generation, and therefore a low risk of damage and/or destruction of the high-voltage circuit breaker due to excess heat that cannot be released to the outside sufficiently quickly.

The at least one vacuum shutoff valve, in particular the at least one fixed contact and the at least one movable contact of the at least one vacuum shutoff valve, can be made of and/or contain copper, and/or the intermediate part can contain a copper part, which can be inseparably connected to the copper of the vacuum shutoff valve, in particular by electron beam welding, and/or the holder can be made of and/or contain aluminum, respectively, and/or the intermediate part can contain an aluminum part, which can be inseparably connected to the aluminum of the holder, in particular by electron beam welding. A stable material-bonding connection between aluminum and copper is difficult to produce. An intermediate part having two parts, i.e. an aluminum part and a copper part, can be easily and inexpensively produced by explosive welding and/or roll joining. In particular, electron beam welding between aluminum and aluminum and between copper and copper is easily and inexpensively possible without mechanical loads, such as, for example, explosive welding and/or roll joining. In particular, by using intermediate parts manufactured by explosive welding and/or roll bonding, a material-bonded connection between the vacuum shut-off valve and the holder is possible simply and inexpensively, without mechanical stress and destruction of the vacuum shut-off valve and/or the holder, and has the above-mentioned advantages.

The high voltage circuit breaker can be configured to switch voltages ranging from a few kV to 1200 kV. The above-mentioned advantages arise particularly in the case of high voltage circuit breakers configured to switch the above-mentioned current and/or voltage ranges.

The high-voltage circuit breaker may contain a barrier gas, in particular _SF6 and/or clean air, and the vacuum interruption valve and/or at least one holder may be spatially surrounded by the barrier gas, so that a safe operation of the vacuum interruption valve in the high-voltage circuit breaker is possible and good electrical insulation is obtained, in particular for parts that are not intended to carry current for safety reasons.

The at least one holder can be configured to arrange the vacuum shut-off valve in a housing, in particular a closed insulator housing, in a particularly mechanically stable manner, in particular by means of a spatially fixed holder and/or by means of a holder that can be movably driven, in particular via a drive device. This leads to the above-mentioned advantages of the high-voltage circuit breaker, in particular high reliability and a long service life.

The method for manufacturing a high-voltage circuit breaker, in particular the above-mentioned high-voltage circuit breaker, according to the present invention includes at least one vacuum shutoff valve supported by at least one holder, where the at least one vacuum shutoff valve is inseparably connected to the at least one holder, in particular by electron beam welding.

The at least one fixed contact and the at least one movable contact of the at least one vacuum shutoff valve, in particular comprising copper, can each be connected to an intermediate part, in particular by electron beam welding, and/or the intermediate part can comprise two parts of different materials, in particular copper and aluminum, in which case the two parts can be inseparably connected to one another in a material-bonding manner by explosive welding and/or roll joining, and/or the intermediate part can be inseparably connected to the at least one holder, in particular comprising aluminum, in particular by electron beam welding.

The copper parts of the intermediate parts can be joined to the copper of the contacts of the vacuum shutoff valve, and the aluminum parts of the intermediate parts can be joined to the aluminum of the holder.

The advantages of the manufacturing method of the high-voltage circuit breaker according to claim 11, particularly the high-voltage circuit breaker described above, are similar to the advantages described above of the high-voltage circuit breaker according to claim 1, and vice versa.

The embodiment of the present invention is illustrated in Figures 1 to 3 and described in more detail below.

FIG. 1 is a schematic cross-sectional side view of a high-voltage circuit breaker 1 according to the present invention, showing a vacuum shut-off valve 2 supported by two holders 3 and 4, and a plurality of contacts of the vacuum shut-off valve 2 coupled to the holders 3 and 4 via a plurality of intermediate parts 7, respectively. 4 is an enlarged schematic diagram of a cross section of an intermediate part 7 between a fixed contact of the vacuum cutoff valve 2 and a holder 3. FIG. 1 is a schematic enlarged cross-sectional view of an intermediate part 7 between a moving contact of a vacuum shutoff valve 2 and a holder 4 , which has a moving contact disk 5 in a fixed holder sleeve 6 .

1 is a schematic cross-sectional side view of a part of a high-voltage circuit breaker 1 according to the invention. The high-voltage circuit breaker 1 includes a vacuum shutoff valve 2 with two holders 3 and 4. The vacuum shutoff valve 2 is configured for switching up to 35 kV and/or up to 145 kV. For the sake of simplicity, the individual elements or parts of the vacuum shutoff valve 2 are not shown in detail in the drawing. The vacuum shutoff valve 2 is, for example, cylindrical and includes a number of conductive contacts, in particular a moving contact and a fixed contact, for example made of copper, protruding at their ends from a ceramic evacuated hollow insulator, the moving contact side of which is hermetically sealed by a metal bellows and the fixed contact side by a fixed metal disk or a fixed metal lid. The vacuum shutoff valve includes a number of other elements or parts, such as, for example, a shield electrode, which will not be described in detail below.

The end of the fixed contact, which forms the left end of the vacuum shutoff valve 2 in FIG. 1, is electrically conductively connected to a spatially fixed holder 3. This connection is shown on an enlarged scale in FIG. 2. The fixed holder 3 is, for example, in the form of a hollow pipe, with an outwardly guided fixed flange at one end and an inner fixed plate or disk with a number of ventilation openings at the other end. The holder 3 is, for example, made of aluminum. A mechanically stable and well-conductive connection between the vacuum shutoff valve 2, i.e. in particular a copper contact and the holder 3, in particular made of aluminum, is difficult to establish using a typical, in particular snap-on clamp connection. According to the invention, a mechanically stable and well-conductive connection between the vacuum shutoff valve 2 and the contact of the holder 3 is established by a permanent, i.e. inseparable connection.

Inseparable in this context means that the connection cannot be released without material destruction, unlike screw and/or clamp connections that can be repeatedly attached and detached without permanent material destruction. The material-bonded, well-conductive connection between the contact of the vacuum shutoff valve 2 and the holder 3 is made via an intermediate part 7, which is made, for example, by explosive welding and/or roll bonding. In this case, in particular, two cylindrical disks are connected by explosive welding and/or roll bonding, one of which has the diameter of the copper contact of the vacuum shutoff valve 2 and the side of the holder 3 has in particular the same diameter as the ledge of the inner fixing plate or fixing disk with a number of ventilation openings. One disk is made, for example, of copper and the other disk is made, for example, of aluminum. The intermediate part 7 to which these two disks are connected is therefore made, on one side, of a first material 8, in particular of copper, and on the other side, of a second material 9, in particular of aluminum. This intermediate part 7 therefore has two parts 8 and 9 of different materials, in particular copper and aluminum, which are mechanically stable, well-conductive and inseparably connected to one another by explosive welding and/or roll bonding.

The first material 8 side, i.e. in particular the copper part, is mechanically stable, well-conductive and inseparably connected to the fixed contact of the vacuum shutoff valve 2, for example by electron beam welding. The second material 9 side, i.e. in particular the aluminum part, is mechanically stable, well-conductive and inseparably connected to the holder 3, for example by electron beam welding. These welded connections 10, in particular the electron beam welded connections, are mechanically strong, stable and permanent, i.e. inseparable, and have a low contact resistance, i.e. good electrical conductivity. As a result, the fixed contact of the vacuum shutoff valve 2 is mechanically fixed, stable, permanently, i.e. inseparable and also well-conductively connected to the fixed holder 3, and a large amount of heat generation or a large temperature rise at the connection, which could lead to damage and/or failure of the high-voltage circuit breaker 1, is avoided, especially at high currents in the range of several thousand amperes.

In FIG. 3, one end of the movable contact of the vacuum shutoff valve 2 is shown together with the holder 4. This holder 4 has a hollow-pipe-shaped, spatially fixed holder sleeve 6, which on one side has, in particular, a flange that is pulled outward, and on the other side, the vacuum shutoff valve is inserted in the hollow pipe and is hermetically sealed, for example, with a seal, and the end of the movable contact projects into the hollow pipe. On the side of the holder 3, the end of the fixed contact of the vacuum shutoff valve 2 likewise projects into the hollow-pipe-shaped holder 3 and is inserted in the hollow pipe and is hermetically sealed, for example, with a seal, as shown, for example, in the enlarged views in FIGS. 1 and 2. In FIG. 3, the holder 4 into which the vacuum shutoff valve 2 is inserted is shown enlarged. In this case, in addition to the holder sleeve 6, the holder 4 has a movable contact medium 5, in particular a contact disk or an internal contact sleeve, which is movably supported in the spatially fixed holder sleeve 6 and is connected, for example, via a drive rod, to a drive device. This is not shown in the drawings for the sake of simplicity. The movable contact medium 5 can be driven via a drive when opening and closing, and in particular when moving, slides in a telescopic manner in the fixed holder sleeve 6. Thus, the holder 4 can be driven movably via a drive, i.e. the movable contact medium 5 can be moved in the fixed holder sleeve 6 when opening and closing, in particular via the drive.

The end of the movable contact, which forms the right end of the vacuum shutoff valve 2 in FIG. 1, is conductively connected to the holder 4, in particular to the movable contact medium 5. In FIG. 3, the connection is shown on an enlarged scale. The holder 4 is made of aluminum, for example, i.e. the fixed holder sleeve 6 and/or the movable contact medium 5 are made of aluminum. A mechanically stable and well-conductive connection between the vacuum shutoff valve 2, i.e. the movable contact, in particular made of copper, and the holder 4, i.e. the movable contact means 5, in particular made of aluminum, is difficult to establish using a typical, in particular snap-on clamp connection. According to the invention, a mechanically stable, material-bonded and well-conductive connection between the contact of the vacuum shutoff valve 2 and the holder 4, in particular the movable contact medium 5, is established by a permanent, i.e. inseparable connection.

In this context, inseparable, as previously mentioned and as used below, means that the connection cannot be released without material destruction, unlike screw and/or clamp connections which can be repeatedly attached and detached without permanent material destruction. A good conductive connection by material bonding between the contact of the vacuum shutoff valve 2 and the holder 4, in particular with the moving contact medium 5, is made via the intermediate part 7, which is obtained for example by explosive welding and/or roll bonding. In this case, in particular two cylindrical disks are connected by explosive welding and/or roll bonding, in particular one having the diameter of the copper contact of the vacuum shutoff valve 2 and in particular the same diameter as the ledge of the moving contact medium 5, in particular the contact disk or the inner contact sleeve. One disk of the intermediate part 7 is made of copper, for example, and one disk of the intermediate part 7 is made of aluminum, for example. The intermediate part 7 with the two disks connected thus has on one side a first material 8, in particular copper, and on the other side a second material 9, in particular aluminum. Thus, this intermediate part 7, as described above for the intermediate part 7 of the holder 3, has two parts 8 and 9 of different materials, in particular copper and aluminum, which are mechanically stable, well-conductive and inseparably connected to one another, for example by explosive welding and/or roll bonding.

The side of the first material 8, i.e. in particular the copper part, is mechanically stable, well conductive and inseparably connected to the moving contact of the vacuum shutoff valve 2, for example by electron beam welding. The side of the second material 9, i.e. in particular the aluminum part, is mechanically stable, well conductive and inseparably connected to the holder 4, for example by electron beam welding. These welded connections 10, in particular electron beam welded connections, are mechanically strong, stable, permanent, i.e. inseparable, have a low contact resistance, i.e. good electrical conductivity. As a result, the moving contact of the vacuum shutoff valve 2 is mechanically fixed, stable, permanent, i.e. inseparable and also has good electrical conductivity connected to the fixed holder 4, in particular the moving contact medium 5, so that a large amount of heat generation or a large temperature rise at the connection, which could lead to damage and/or failure of the high-voltage circuit breaker 1, is avoided, in particular at high currents in the range of several thousand amperes.

The vacuum shut-off valve 2, in particular the fixed and movable contacts of this vacuum shut-off valve 2, which are made of copper and/or contain copper, and the respective intermediate parts 7, which include, for example, copper parts, are inseparably connected, in particular via parts of the same material, in particular by electron beam welding. The holders 2 and 3, which are made of aluminum and/or contain aluminum, are inseparably connected, in particular via parts of the same material, in particular by electron beam welding, to the respective intermediate parts 7, which include aluminum parts. The parts 8 and 9 of the respective intermediate parts 7 are inseparably connected to one another, in particular by explosive welding and/or roll joining, in particular by joining together parts of dissimilar materials. In this way, an inseparable connection is established between the vacuum shut-off valve 2, in particular the fixed and movable contacts of the vacuum shut-off valve 2, and the respective holders 3, 4 via the respective intermediate parts 7, which has good electrical properties, i.e. has a high electrical conductivity with a low electrical resistance. Good electrical conduction through the high-voltage circuit breaker 1 in the closed state minimizes the risk of excessive heating, especially at the connection points, and the risk of damage and/or destruction due to excessive heat generation. High mechanical forces during opening and closing or due to the opening and closing operation are compensated for by the inseparable, mechanically strong and stable mechanical connection between the holders 3 and 4 and the vacuum shutoff valve 2 and do not lead to destruction of the high-voltage circuit breaker 1.

The above-mentioned embodiments can be combined with each other and/or with the prior art. For example, the high-voltage circuit breaker 1 has a housing, which is not shown in the drawings for simplicity, and which is filled with a barrier gas, in particular _SF6 and/or clean air. The housing is, for example, a hermetically sealed hollow insulator made of ceramic, silicone and/or composite material, and is provided with ribs on the outer periphery, in particular for reducing creepage currents. Alternatively, the housing is, for example, a hermetically sealed metal tank, which is electrically earthed. For electrically connecting the high-voltage circuit breaker 1 to the power system, in particular to the power generator and/or power consumer and/or power cable, a number of connection terminals are guided, for example from the housing to the outside, by means of a number of holders. The high-voltage circuit breaker 1 further has, for example, a support for placing the high-voltage circuit breaker 1, for example, on a foundation. Furthermore, the high-voltage circuit breaker has, for example, a drive, in particular a spring drive, and elements of a kinematic mechanism, for example a gear and at least one drive rod, for driving the moving contact when opening and closing.

The high-voltage circuit breaker 1 has one moving contact and one fixed contact, but alternatively or additionally can include further contacts and/or at least two moving contacts. The contacts are made of copper. Alternatively or additionally can include other materials, for example steel and/or aluminum, and furthermore the intermediate part 7 can include a first material, for example also steel and/or aluminum, on the side of the face 8. The holder is made of aluminum. Alternatively or additionally can include other materials, such as steel and/or copper, and the intermediate part 7 can include a second material, for example also steel and/or copper, on the side of the face 9. The two different materials of the vacuum shut-off valve 2 and the holder 3, 4 are inseparably connected to each other via the intermediate part 7, which in particular consists of two circular disks. Alternatively or additionally, other shapes can be selected, for example cylinders and/or hollow bodies with a square cross section. The two materials of the intermediate part 7 can be joined together with a clearly defined separation and/or can be continuously transferred into one another, for example by material diffusion into each other, for example by heat treatment.

REFERENCE NUMERALS 1 High-voltage circuit breaker 2 Vacuum shutoff valve 3 Fixed contact side holder 4 Moving contact side holder 5 Moving contact medium, in particular contact disk 6 Holder sleeve 7 Intermediate part 8 First material side 9 Second material side 10 Welded connection

Claims (10)

A high-voltage circuit breaker (1) having at least one vacuum shutoff valve (2), the vacuum shutoff valve (2) being supported by at least one holder (3, 4) of the high-voltage circuit breaker (1),
the at least one vacuum shutoff valve (2) is connected to the at least one holder (3, 4) by means of an intermediate part (7) in each of the at least one holders (3, 4),
said intermediate part (7) comprising at least two parts,
The two parts are inseparably connected to one another by a material bond.
A high voltage circuit breaker (1). The at least one vacuum shutoff valve (2) has at least one fixed contact and at least one movable contact;
At least one holder (3) is provided on the side of the at least one fixed contact, and at least one holder (4) is provided on the side of the at least one movable contact.
A high voltage circuit breaker (1) according to claim 1. The high-voltage circuit breaker (1) according to claim 1 or 2, characterized in that the at least one vacuum shutoff valve (2) is inseparably connected to the at least one holder (3, 4) by a welded connection (10). the at least one vacuum shutoff valve (2) is connected to the intermediate part (7);
and/or
the intermediate part (7) comprises two parts of different materials, the two parts of different materials being inseparably connected to one another in a material-bonding manner by explosive welding and/or roll bonding,
and/or
said intermediate parts (7) are each inseparably connected to said at least one holder (3, 4);
A high voltage circuit breaker (1) according to any one of claims 1 to 3. said at least one vacuum shutoff valve (2) wherein the fixed contacts and the movable contacts of said at least one vacuum shutoff valve (2) are made of and/or contain copper;
and/or
the intermediate part (7) includes a copper part, the copper part being inseparably connected to the copper of the vacuum shutoff valve (2);
and/or
said holders (3, 4) are each made of and/or contain aluminium,
and/or
the intermediate part (7) comprises an aluminium part, said aluminium part being inseparably connected to the aluminium of said holder (3, 4);
A high voltage circuit breaker (1) according to any one of claims 1 to 4 . A high-voltage circuit breaker (1) according to any one of claims 1 to 5, characterized in that it is configured to switch voltages in the range of several kV to 1200 kV. The high-voltage circuit breaker (1) according to any one of claims 1 to 6, characterized in that the high-voltage circuit breaker (1) contains a barrier gas and/or clean air, and the vacuum barrier valve (2) and/or the at least one holder (3, 4) are spatially surrounded by the barrier gas. The high-voltage circuit breaker (1) according to any one of claims 1 to 7, characterized in that the at least one holder (3, 4) is configured to mechanically stably arrange the vacuum shut-off valve (2) within the housing. A method for manufacturing a high-voltage circuit breaker (1) according to any one of claims 1 to 8, comprising at least one vacuum shutoff valve (2) supported by at least one holder (3, 4), comprising the steps of:
said at least one vacuum shutoff valve (2) is coupled to said at least one holder (3, 4);
A method comprising: The copper part of the intermediate part (7) is joined to the copper of the contact of the vacuum interruption valve (2);
the aluminum part of the intermediate part (7) is joined to the aluminum of the holder (3, 4);
10. The method of claim 9.

Images