Base module for high-voltage circuit breaker with vacuum interrupter and high-voltage circuit breaker with said base module

Abstract

The present invention relates to a base module (1) for a high-voltage circuit breaker (2), which has at least two vacuum interrupters (3) and at least one coupling element (5) for mechanically coupling the vacuum interrupters (3) to a drive device (6). According to the invention, the at least two vacuum interrupters (3) and the at least one coupling element (5) are combined as a base module (1) in one casing (4). The present invention further relates to a high-voltage circuit breaker (2) having at least one base module (1), in particular having exactly one base module (1).

Description

[Technical Field]

[0001] The present invention relates to a base module for a high-voltage circuit breaker, the base module having at least two vacuum interrupters and at least one coupling member for mechanically coupling the vacuum interrupters to a drive device.Furthermore, the present invention relates to a high-voltage circuit breaker. [Background technology]

[0002] High-voltage circuit breakers with vacuum interrupters are power switchgears for switching high voltages, particularly voltages above 52 kV, and / or for switching large currents up to several tens of kiloamperes. They can therefore switch, i.e., turn on or off, operational and / or fault currents, for example, in power transmission networks with operational voltages above 380 kV. The vacuum interrupters of high-voltage circuit breakers are arranged in a dead-tank housing, e.g., a metal tank, or in a live-tank housing, e.g., an insulating housing, particularly a ribbed ceramic, silicone, and / or composite housing. The housing is filled with, for example, an insulating gas, e.g., SF6, CO2, and / or clean air, i.e., purified, dry air.

[0003] A vacuum interrupter has two movable contacts or contact pieces, one fixed and one movable, that are movable relative to one another. The contact pieces have contact disks at their ends, which are in mechanical and electrical contact with each other in the closed state of the circuit breaker and spaced apart in the open state, forming a gap in the evacuated space. The size of the gap ranges from millimeters to centimeters, depending on the maximum voltage sustained by the circuit breaker. The housing of a vacuum interrupter, typically cylindrical, has ceramic segments connected to each other by a metal shielding element, typically a brazed main shield of copper or steel. At one end, the vacuum interrupter is closed fluid-tight by a cover, particularly at the end of the fixed contact piece that protrudes from the vacuum interrupter at the end for electrical contact. At the other end, the vacuum interrupter is closed fluid-tight by a bellows, particularly at the end of the movable contact piece that protrudes from the vacuum interrupter at the end for electrical contact. When two movable contacts are used, each contact is movably mounted via a bellows. A drive, e.g., a spring-operated drive, is connected to one or more of the movable contacts via kinematic chain elements, e.g., drive rods and gear members, for driving or moving the contacts when opening or closing the circuit breaker.

[0004] Vacuum interrupters, especially in high-voltage circuit breakers, are low-maintenance, durable, and easily and reliably driven, especially by spring-operated drives. For high-voltage requirements, circuit breakers are used that have, for example, multiple vacuum interrupters whose switching sections are electrically connected in series, as is known, for example, from US Pat. No. 5,629,492. Alternatively, vacuum interrupters with, for example, multiple switching paths are used, especially in one vacuum interrupter. For high currents, vacuum interrupters can be arranged interconnected in parallel.

[0005] In the case of multiple vacuum interrupters, when the switching paths of the vacuum interrupters are opened, it is desirable to distribute the voltage to the vacuum interrupters in a manner that matches the vacuum interrupters, i.e., to avoid overloading individual vacuum interrupters. For example, in the case of multiple identically configured vacuum interrupters or switching paths connected in series, it is desirable to have as uniform a voltage distribution as possible across the vacuum interrupters or switching paths. To achieve the desired voltage distribution across the vacuum interrupters, passive electrical devices such as control resistors, control capacitors, and / or varistors are connected in parallel with each vacuum interrupter.

[0006] A vacuum interrupter having a kinematic chain member for driving the moving contact is disposed within the circuit breaker housing, surrounded by an insulating gas. One or more drive devices are disposed outside the housing for ease of maintenance. The moving contact of one or more vacuum interrupters is mechanically connected to one or more drive devices via the kinematic chain member. Electrical bushings within the circuit breaker housing allow electrical contact with the external contacts of one or more vacuum interrupters located inside the housing for electrical connection to the devices, electrical conductors, and / or parts of the current network to be switched. Circuit breakers having the above-mentioned components, e.g., vacuum interrupters, housings, kinematic chain members, and / or drive device members, are developed for each circuit breaker type or for each circuit breaker, depending on requirements, e.g., maximum switching voltage and / or short-circuit current.

[0007] The vacuum interrupter is selected or developed according to the electrical requirements, and the drive and kinematic chain are designed. The housing is designed to permanently ensure sufficient dielectric strength and prevent breaker-destructive flashovers, depending on the electromagnetic conditions. The insulating gas used plays a role in this. The drive and components of the kinematic chain are designed according to the vacuum interrupter and the required parameters, such as the switching time and required force. This involves high development costs and a small number of individual components, resulting in a high component price. A modular design and the selection of specific components are conventionally used, for example, for drive mechanisms that are configured in different types for various circuit breakers. Other components, such as the housing and kinematic chain components, i.e., the connection of the vacuum interrupter to the drive, are designed individually for each circuit breaker. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] German Patent Application Publication No. 102013208419 Summary of the Invention [Problem to be solved by the invention]

[0009] The object of the present invention is to reduce the overhead and development costs for a base module of a high-voltage circuit breaker, to make it easily and reliably usable for a variety of circuit breakers, and in particular to have standardized connection possibilities.It is also an object of the present invention to provide a high-voltage circuit breaker with a base module having the above-mentioned advantages. [Means for solving the problem]

[0010] According to the invention, the above-mentioned object is achieved by a base module for a high-voltage circuit breaker having the features of claim 1 and / or by a high-voltage circuit breaker having at least one, in particular exactly one, base module as claimed in claim 13. Advantageous embodiments of the base module according to the invention for a high-voltage circuit breaker and / or the high-voltage circuit breaker according to the invention having at least one, in particular exactly one, above-mentioned base module are set out in the dependent claims. The subject matter of the main claims can be combined with the features of the dependent claims and the features of the dependent claims can be combined with each other.

[0011] The base module for a high-voltage circuit breaker according to the present invention comprises at least two vacuum interrupters and at least one coupling element for mechanically coupling the vacuum interrupters to a drive device. According to the present invention, the at least two vacuum interrupters and the at least one coupling element are combined into a base module in a single casing.

[0012] Combining components, particularly at least two vacuum interrupters and at least one coupling element for mechanically coupling the vacuum interrupters to the drive device, and combining them into a base module within a housing, results in cost savings. Development costs are particularly reduced, and a higher number of components can achieve lower costs for the high-voltage circuit breaker components. The electrical and mechanical connectors of the base module and the high-voltage circuit breaker are standardized and matched to each other so that multiple base modules can be installed on a high-voltage circuit breaker and / or used with multiple high-voltage circuit breakers. The base module is easily replaceable, for example, during maintenance, and can be used with many high-voltage circuit breakers or types, allowing for mass production of the base module and therefore lower costs than custom production and specialized, individually adapted designs. The strict requirements of high-voltage circuit breakers, particularly for switching power, switching voltage, and short-circuit current, can be realized in a base module, particularly by using and / or combining multiple vacuum interrupters, without changing the external dimensions of the base module and its connector for multiple applications.

[0013] The base module can be filled with an insulating material, particularly a solid insulating material. The insulating material can be and / or include resin, polymer foam, plastic, PTFE, and / or PCTFE. The insulating material allows for electrical insulation of internal components, such as the vacuum interrupter in the base module, to prevent flashover when a voltage is applied, for example. Materials such as resin, polymer foam, plastic, PTFE, and / or PCTFE are particularly good electrical insulators. The casing of the base module can also be made of or include these materials, and / or the filling and casing form the body, or the insulating material forms the casing.

[0014] Control elements, in particular capacitors, resistors and / or varistors, can be arranged within the housing, in particular a control element for each of at least two vacuum interrupters, thus making it possible, in particular, to control vacuum interrupters, for example, when several vacuum interrupters are arranged in series, with a simultaneously compact and cost-effective design.

[0015] At least two vacuum interrupters can be electrically connected in series with one another, in particular by at least one coupling element spatially arranged between the at least two vacuum interrupters, thereby enabling high voltages to be switched. The coupling element arranged between the vacuum interrupters and connected to the movable contacts of the at least two vacuum interrupters allows for a compact, simple and cost-effective mechanical connection between the movable contacts and the drive mechanism, in particular via a single mechanical connection, or allows for the mechanical connection of a base module.

[0016] The at least two vacuum interrupters may each have at least one fixed contact and at least one movable contact, the fixed contact being guided outside the casing as an electrical connector of the base module, and / or the movable contact being movably mechanically connected to at least one coupling member in a chamber that may be located outside the vacuum interrupter and inside the casing. The fixed contact guided out of the casing as an electrical connector of the base module allows for simple, low-loss, and cost-effective electrical contact or connection of the base module or the vacuum interrupter in the base module to a high-voltage power switch and / or other parts of the base module and / or high-voltage power switch to an electrical network and / or electrical equipment device. The movable contact piece mechanically connected to at least one coupling member within a chamber that may be located outside the vacuum interrupter and inside the casing allows for casting or encapsulating the vacuum interrupter and / or filling the base module with solid insulating material, in which case the movable contact piece and at least one coupling member remain movably mounted within the unfilled chamber, and the filling of insulating material within the casing and outside the chamber can prevent or suppress flashover.

[0017] The vacuum interrupters may be arranged coaxially on the longitudinal axis, and / or at least one coupling element may be arranged between at least two vacuum interrupters, in particular a rotating bushing. This allows for a compact, simple, and cost-effective construction of the base module, and allows for simple actuation or manipulation of the movable contact of the vacuum interrupter via the at least one coupling element during opening and closing. In particular, the rotating bushing allows for mechanical connection of the movable contact rotated 90 degrees relative to the longitudinal axis of the vacuum interrupter, thereby spaced apart or electrically isolated from the electrical connector of the base module. The drive device can therefore be arranged or can be arranged with its longitudinal axis perpendicular to the longitudinal axis of the vacuum interrupter. This results in a simple, compact construction with a drive part that is electrically isolated and spaced apart from the fixed contact of the vacuum interrupter or the electrical connector of the base module.

[0018] The vacuum interrupters are arranged with their longitudinal axes at angles unequal to 180 degrees relative to each other, or parallel to each other, particularly for asynchronous switching of vacuum interrupters with drives. Depending on the housing of the high-voltage circuit breaker, a parallel or 180-degree offset arrangement of the vacuum interrupters can result in a compact structure. This compact structure allows for material and cost savings. For asynchronously driven vacuum interrupters in particular, an arrangement of vacuum interrupters with longitudinal axes unequal to 180 degrees relative to each other can be advantageous, for example, to allow for the saving of gear elements through the arrangement. Furthermore, an arrangement of vacuum interrupters with axes unequal to 180 degrees relative to each other can be safer for maintenance personnel, for example, and can allow for the arrangement of electrical connectors that are well insulated from the base of the high-voltage circuit breaker. An arrangement of vacuum interrupters with longitudinal axes unequal to 180 degrees can, for example, allow for staggered asynchronous switching. Particularly in the case of different vacuum interrupters, for example primarily voltage switching and primarily current switching vacuum interrupters, staggered or delayed opening and closing between the vacuum interrupters may be advantageous.

[0019] The base module can be equipped with exactly two vacuum interrupters. A particularly compact design with standardized connectors is well realized with exactly two vacuum interrupters, especially on opposite sides of the base module.

[0020] The vacuum interrupter can be completely enclosed by the casing, especially with the exception of the stationary contacts, which are guided outward. Alternatively, the vacuum interrupter can be only partially enclosed by the casing, especially in the area of ​​the movable contacts. The first variant allows for good electrical insulation of the connectors of the base module, and especially the stationary contacts, from each other, thereby reducing or avoiding electrical flashovers under voltage, especially in the switched-off state. Electrical flashovers can cause damage, even to the destruction of the base module and / or the vacuum interrupter. The second variant, in which the vacuum interrupter is only partially enclosed by the casing, can save material and thus cost and result in a compact design. Particularly in live power circuit breakers with an insulator housing, partial encapsulation of the vacuum interrupter by the casing is sufficient to ensure sufficient dielectric strength without electrical flashovers.

[0021] The at least two vacuum interrupters can be different, particularly at least one vacuum interrupter for current interruption and at least one vacuum interrupter for voltage isolation, and these can be designed differently, particularly in terms of spatial dimensions, structure, stroke, and / or current / voltage carrying capacity. This allows the base module to be easily and cost-effectively adapted to various applications, for example, at a predetermined maximum voltage level and / or short-circuit current strength. Depending on the dimensions of the high-voltage circuit breaker housing and / or base module, the vacuum interrupters can be designed to have a predetermined current / voltage carrying capacity.

[0022] The high-voltage circuit breaker according to the invention, having at least one base module, in particular having exactly one base module, is designed as described above to switch voltages in the high-voltage range, in particular in the range of 52 kV and above, and / or the high-voltage circuit breaker is filled with clean air as insulating gas. Clean air as insulating gas is environmentally friendly, CO₂-neutral, and allows for environmentally friendly insulation inside the circuit breaker. The advantages described above regarding the base module are particularly applicable to circuit breakers in the high-voltage range, for example for switching voltages above 52 kV.

[0023] Each base module of a high-voltage circuit breaker can have exactly two electrical connectors to the outside and exactly one mechanical connector for the driver. Therefore, all required characteristics can be achieved with a minimum number of connectors. High-voltage circuit breakers can have base modules with standardized, identical external dimensions. This makes it possible to have a large number of base modules, which leads to scaling effects, such as a lower cost per base module.

[0024] As mentioned above, the advantages of the high voltage circuit breaker according to the invention as claimed in claim 13, having at least one base module, in particular having exactly one base module, are similar to the advantages of the base module according to the invention for the high voltage circuit breaker as claimed in claim 1 above, and vice versa. [Brief explanation of the drawings]

[0025] An embodiment of the invention is shown diagrammatically in the drawing and is explained in more detail below.

[0026] [Figure 1] 1 shows a schematic representation of a base module 1 according to the invention for a high voltage circuit breaker, which has at least two vacuum interrupters 3 and one coupling member 5 in a casing 4 . [Figure 2] 1 shows a schematic representation of a high voltage circuit breaker 2 according to the invention with a base module 1 according to FIG. DETAILED DESCRIPTION OF THE INVENTION

[0027] FIG. 1 shows a schematic cross-sectional side view of a base module 1 for a high-voltage circuit breaker according to the invention. The base module 1 comprises two vacuum interrupters 3 and one connecting element 5 arranged in a casing 4. The casing 4 is or includes a housing made of, for example, plastic or metal, in particular steel and / or aluminum sheet. The casing 4 is filled with an insulating material 7, for example, an insulating gas, in particular SF6, CO2, and / or clean air, and / or a solid substance as the insulating material 7, for example, a resin, polymer foam, plastic, PTFE, and / or PCTFE. The filling made of the insulating material 7 can also form the casing 4 without a boundary with the housing-shaped exterior.

[0028] In the embodiment of FIG. 1, the base module 1 includes two vacuum interrupters 3. Alternatively, three or more vacuum interrupters 3 may be included. Each vacuum interrupter 3 has a housing, for example, including a central main shield and adjacent ceramic segments flush with each other on the left and right. The main shield and ceramic segments are formed, for example, in the shape of a hollow cylinder or tube, and are liquid-tightly sealed at each end of the vacuum interrupter 3. The interior of the vacuum interrupter 3 is evacuated or evacuated. Contact pieces 9 and 10 protrude from the ends of the vacuum interrupter 3 into the housing of the vacuum interrupter 3. For example, the fixed contact piece 9 protrudes from one side or base surface of the cylinder, and the movable contact piece 10 protrudes from the other side or top surface of the cylinder, i.e., from the vacuum interrupter 3.

[0029] The main shield is made of metal, particularly copper and / or steel, and includes a vapor deposition shield (not shown for simplicity's sake). The hollow, cylindrical ceramic pieces are made of, for example, sintered ceramic and are surface-treated. The ceramic pieces include ceramic piece components that are connected to each other via a vapor deposition shield. This connection occurs, for example, during the manufacture of the vacuum interrupter 3, during a brazing operation in a furnace at several hundred degrees Celsius. The vapor deposition shield is made of, for example, metal, particularly copper and / or steel, and is annular. Inside the vacuum interrupter 3, the vapor deposition shield (not shown for simplicity's sake) protrudes from the vacuum interrupter 3, for example, in the form of a ring, or extends beyond the circumference of the ceramic segment element. The vapor deposition shield separates each ceramic piece into separate ceramic piece components.

[0030] The contacts 9, 10 of the vacuum interrupter 3 are made, for example, of copper and / or steel and are formed, for example, as bolts with slit dished ends inside the vacuum interrupter 3. The fixed contact 9 is connected, for example, fluid-tight, to one end of the vacuum interrupter 3 by a cover-like seal, which is made, for example, of metal, in particular copper and / or steel. The movable contact 10 is connected, for example, fluid-tight, to the other end of the vacuum interrupter 3 in the form of a bellows, which is made, for example, of metal, in particular steel, and which closes and seals the vacuum interrupter 3 in a fluid-tight manner.

[0031] The vacuum interrupter is electrically contactable via bolts guided toward the outside of the fixed contact piece 9 and the movable contact piece 10. The movable contact piece 10 electrically opens and closes the gap between the contact piece ends of the fixed contact piece 9 and 10 when making contact, and moves away from the fixed contact piece 9 when breaking contact, creating a gap between the contact piece ends of the contact pieces 9 and 10. Alternatively or additionally, three or more movable contact pieces may be used. The gaps formed between the contact piece ends of the contact pieces 9 and 10, as well as the contact piece ends themselves, are located in the evacuated interior of the vacuum interrupter 3, so that gaps ranging from a few millimeters to a few centimeters are sufficient for interrupting particularly high voltages. The vacuum interrupter 3 has a length, for example, in the range of 30 to 100 centimeters, and a circumference, for example, in the range of 10 to 100 centimeters.

[0032] A control element 8, for example, is arranged around the housing of the vacuum interrupter 3, or at a distance from the housing and / or in parallel with the vacuum interrupter 3, as shown in FIGS. 1 and 2. The control element 8 is arranged, for example, within the casing 4. The control element 8 is, in particular, a capacitor, a resistor, and / or a varistor. The capacitors are, in particular, ceramic capacitors, each having a capacitance value in the range of 10 to 4,000 pF. This results in a total capacitance in the range of 10 to 4,000 pF. The resistors are, in particular, ohmic resistors, having individual resistance values ​​in the range of, for example, a few ohms to hundreds of ohms, or thousands of ohms, or tens of thousands of ohms, or hundreds of thousands of ohms. This results in a total resistance in the range of a few ohms to hundreds of ohms, or thousands of ohms, or tens of thousands of ohms, or hundreds of thousands of ohms. The voltage on the vacuum interrupter can be controlled via the control element 8, especially in the case of a series connection of multiple vacuum interrupters.

[0033] In the embodiment of Figures 1 and 2, two vacuum interrupters 3 of a base module 1 for a high-voltage circuit breaker 2 are electrically connected to each other, in particular in series, via a coupling member 5. The coupling member 5 is electrically conductive and is made of, for example, a metal, in particular copper and / or steel, and electrically connects the movable contact pieces 10 to each other, in this embodiment. The movable contact piece 10 can be mechanically driven via the coupling member 5, in particular when opening or closing. In particular, a rotating member and / or a rotating gear included in the coupling member 5 is arranged between the two vacuum interrupters 3 and is mechanically and electrically connected to the movable contact piece 10 in order to drive the movable contact piece 10, in particular in opposite directions, during switching, so that the movable contact piece 10 can be driven in opposite directions during switching.

[0034] The rotating element and / or the rotating gear are, for example, movably arranged in a chamber 11, in particular in a casing 4 filled with a solid material as an insulator 7 of the base module 1, allowing the movement of the contact piece 10. The contact piece end of the movable contact piece 10 protruding from the interior of the vacuum interrupter 3 is movably arranged in the chamber 11 and is mechanically connected to the rotating element and / or the rotating gear in the chamber 11. The casing 4, except for the vacuum interrupter 3 and the interior of the chamber 11, can be filled or is filled with insulating material 7, for example by potting and / or foaming a solid. In particular, a drive shaft and / or drive rod 15 for driving the rotating element and / or the rotating gear, which is mechanically connected to the coupling element 5, is movably guided, for example in a sleeve 18, from outside the chamber 11 to inside the casing 4. Alternatively, the chamber 11 may be arranged, for example, directly to the side of the casing 4, in order to allow movement of the moving elements, for example the drive shaft, the rotating element and / or the rotating gear, and / or the moving contact piece 10 connected to the coupling element 5, in particular when the casing 4 is filled with the solid insulating material 7. Alternatively and additionally, the insulating material 7 may be omitted or is omitted in the area of ​​the coupling element 5, the drive rod 15 and the moving contact piece 10 and their mechanical connection.

[0035] 2 shows a base module 1 according to the invention arranged in a high-voltage breaker 2, in particular a circuit breaker or high-voltage power switchgear. Via a drive rod 15, in particular a rotating shaft, the movable contact 10 of the vacuum interrupter 3 is drivable or made movable, in particular via one or more rotating members and / or rotating gears included in the coupling member 5. The drive rod 15, as part of a kinematic chain, mechanically connects the movable contact 10 of the vacuum interrupter 3 to a drive device 6, in particular via one or more rotating gears included in the coupling member 5. The drive device 6 is, for example, a spring-activated drive and / or comprises a motor, in particular an electric motor.

[0036] In the illustrated embodiment, the vacuum interrupters 3 are arranged on a common axis 12, i.e., coaxially or integrally, corresponding to their longitudinal axes. Alternatively, the vacuum interrupters 3 may be arranged with parallel longitudinal axes or offset relative to one another, e.g., at an angle of 90 degrees, particularly during asynchronous opening and closing of the vacuum interrupters 3. Instead of a rotational movement, the drive rod 15 can transmit the drive force by a translational movement, particularly in conjunction with at least one gear. The drive rod 15 and the drive unit 6 are, for example, located on a common axis, in particular the longitudinal axis of the drive unit 6. Alternatively, additional elements of the kinematic chain may be arranged between the drive unit 6 and the connecting member 5, which allows, for example, the drive unit 6 to be arranged obliquely or offset relative to the connecting member 5 and / or the drive rod 15. One or more drive units 6 may, for example, drive one base module 1 or multiple base modules 1 simultaneously or with a time offset.

[0037] The figure shows an embodiment with a T-shaped arrangement of vacuum interrupters 3 and drivers 6, in which vacuum interrupters 3 are arranged within casing 4 on a common axis 12, which is the longitudinal axis 12 of vacuum interrupters 3, and a connecting member 5 is arranged within casing 4 between vacuum interrupters 3. A drive rod 15 is arranged coaxially with driver 6 on the common longitudinal axis of driver 13 at a 90° angle to axis 12, resulting in the T-shaped arrangement. A high-voltage circuit breaker 2, shown schematically as an embodiment in cross section in FIG. 2, includes a housing 16 filled with an insulating gas 14, such as SF₆, CO₂, and / or clean air. A base module 1 is arranged within housing 16 of high-voltage circuit breaker 2, which is electrically connected and / or mechanically fixed to it, for example, via fixed contact pieces 9 of vacuum interrupters 3 protruding from base module 1. For this purpose, for example, a connector 17 of the high-voltage circuit breaker, which serves for electrical connection to the power grid, is guided from the outside into the housing 16 for electrical connection to the electrical device and / or installation to be switched, and is electrically and / or mechanically connected to a fixed contact 9 of the vacuum interrupter 3, which serves for contacting the base module 1. A drive device 6 fixed to the housing 16 is mechanically connected to the base module 1, in particular to a connecting element 5 of the base module 5, for example via a drive rod 15 which is guided from the drive device 6 to the base module 1 within the housing 16. As a result, the drive force or drive movement of the drive device 6 can be transmitted via the drive rod or shaft to a movable contact 10 of the vacuum interrupter 3 in the connecting element 5, in particular when switching the high-voltage circuit breaker 2 or the base module 1.

[0038] The above-described embodiments can be combined with one another and / or with prior art. Thus, for example, instead of one base module 1, two or more base modules 1 can be provided in the housing 16 of the high-voltage circuit breaker 2. The high-voltage circuit breaker 2 can have two or more housings 16 with one base module 1 or multiple base modules 1, in particular with identically configured, for example standardized, base modules. For example, one base module 1 and / or multiple base modules 1 can be provided for each electrical phase to be switched. For this purpose, one or more drives 6 can be provided.

[0039] The vacuum interrupters 3 of one or more base modules 1 may be connected in series and / or parallel. The housing 16 of the high-voltage circuit breaker 2 may be, for example, a hermetically sealed metal tank and / or a hermetically sealed insulator housing. The metal tank housing may be made of, for example, steel and / or aluminum and is at ground potential, particularly like a dead tank. The insulator housing may be made of, for example, ceramic, silicone, and / or composite material and may have a ribbed outer surface, particularly to extend leakage current paths. The housing 16 is filled with, for example, clean or purified air as a climate-neutral insulating gas 14. Alternatively or additionally, insulating gases 14 such as SF6 and / or CO2 may be used.

[0040] The coupling member 5 is arranged in the chamber 11, especially when using a solid insulator 7 in the casing 4. In the case of a gaseous insulator in the casing 4, such as SF6, CO2 and / or clean air, for example, the chamber 11 may be omitted. The chamber 11, the casing 4 and / or the housing 16 may contain gases with different pressures.

[0041] As shown in the figure, the vacuum interrupters 3 are electrically and mechanically connected to one another via the movable contact 10, in particular via the coupling member 5. Alternatively, the vacuum interrupters 3 may be electrically connected to one another via the fixed contact 9, e.g., via a cable, and may be electrically and mechanically isolated, e.g., via the coupling member. The electrical and / or mechanical connection may alternatively be via the movable contact 10 and the fixed contact 9. A drive 6, e.g., an electric motor and / or a spring-activated drive, or multiple drives 6, may be provided to move or drive the movable contact 10. The kinematic chain members may include a drive rod 15, gears, and / or shafts. Alternatively, the coupling member 5 may be driven directly by the drive 6.

[0042] The use of the same or multiple base modules 1 allows for cost-effective production in large quantities, particularly with identical external dimensions, and allows for easy replacement of high-voltage circuit breakers 1. Different base modules, particularly with the same external dimensions and / or connectors, can be used in a circuit breaker type. Thus, for example, when using different vacuum interrupters 3 and / or different numbers of vacuum interrupters 3 in one or more base modules 1, it is possible to simply adapt the switching type to different voltages and / or currents to be switched. Alternatively, the same or multiple base modules 1, particularly with the same external dimensions and / or connectors, can be used in multiple high-voltage circuit breakers 2, in which case the number of base modules 1 in a switching device type is changed, for example, to adapt to the voltages and / or currents to be switched, i.e., when using standardized, cost-effective base modules 1, and the housing 16 is adapted to correspond to the desired switching characteristics. [Explanation of symbols]

[0043] 1 bass module 2. High voltage circuit breaker 3 Vacuum Interrupter 4 Casing 5. Connecting member to drive unit 6. Drive unit 7. Insulating materials 8 Control Member 9 Fixed contact piece 10 Movable contact piece Room 11 12 Vertical axis of vacuum interrupter 13 Longitudinal shaft of drive unit 14 Insulating gas 15 Drive rod 16 High voltage circuit breaker housing 17 High voltage circuit breaker contact piece 18 sleeve

Claims

1. A base module (1) for a high voltage circuit breaker (2) comprising at least two vacuum interrupters (3) and at least one coupling member (5) for mechanically coupling said vacuum interrupters (3) to a drive device (6), A base module (1), characterized in that the at least two vacuum interrupters (3) and the at least one coupling member (5) are arranged together as a base module (1) within a single casing (4).

2. 2. The base module (1) according to claim 1, characterized in that the base module (1) is filled with an insulating material (7), in particular a solid insulating material (7).

3. 3. Base module (1) according to claim 2, characterized in that the insulating material (7) is and / or comprises a resin, a foamed polymer, a plastic, PTFE and / or PCTFE.

4. A control element (8), in particular a capacitor, a resistor and / or a varistor, is arranged in the casing (4), the control member (8) is in particular a control member for each of the at least two vacuum interrupters (3), Base module (1) according to any one of claims 1 to 3.

5. The at least two vacuum interrupters (3) are electrically connected in series with each other; In particular, said at least one coupling member (5) is spatially connected between said at least two vacuum interrupters (3), Base module (1) according to any one of claims 1 to 4.

6. The at least two vacuum interrupters (3) each have at least one fixed contact (9) and at least one movable contact (10); the fixed contact (9) is pulled out from the casing (4) as an electrical contact of the base module (1), and / or the movable contact (10) is movably mechanically connected to the at least one coupling member (5) in a chamber (11) arranged outside the vacuum interrupter (3) and inside the casing (4); Base module (1) according to any one of claims 1 to 5.

7. said vacuum interrupter (3) being arranged coaxially with the longitudinal axis (12); and / or the at least one coupling member (5) is arranged between the at least two vacuum interrupters (3) and in particular comprises a rotating bushing; Base module (1) according to any one of claims 1 to 6.

8. 8. Base module (1) according to claim 7, characterized in that the drive (6) is arranged so that its longitudinal axis (12) is perpendicular to the longitudinal axis (12) of the vacuum interrupter (3).

9. said vacuum interrupters (3) are arranged with their longitudinal axes at an angle not equal to 180 degrees to each other, or the vacuum interrupters (3) are arranged parallel to one another, in particular for asynchronous opening and closing of the vacuum interrupters (3) by the drive (6), Base module (1) according to any one of claims 1 to 8.

10. 10. Base module (1) according to any one of claims 1 to 9, characterized in that it contains exactly two vacuum interrupters (3).

11. the vacuum interrupter (3) is completely enclosed by the casing (4), with the exception of the fixed contact piece (9), which is guided outwards in particular; Alternatively, the vacuum interrupter (3) is only partially surrounded by the casing (4), in particular in the region of the drive contact (10). Base module (1) according to any one of claims 1 to 10.

12. 12. A base module (1) according to any one of claims 1 to 11, characterized in that the at least two vacuum interrupters (3) are different vacuum interrupters (3), in particular at least one vacuum interrupter (3) for current interruption and at least one vacuum interrupter (3) for voltage insulation, which are designed to differ in particular with respect to spatial dimensions, structure, stroke and / or current / voltage carrying capacity.

13. A high-voltage circuit breaker (2) having at least one base module (1), in particular exactly one base module (1), according to any one of claims 1 to 12, the high-voltage circuit breaker (2) is designed to switch voltages in the high-voltage range, in particular in the range of 52 kV and above; and / or A high voltage circuit breaker (2), wherein the high voltage circuit breaker (2) is filled with clean air as an insulating gas (14).

14. each base module (1) has exactly two electrical terminals to the outside and exactly one mechanical terminal for said drive device (6), and / or The base modules (1) are configured to have uniform, particularly standardized, external dimensions, High voltage circuit breaker (2) according to claim 13.

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