A vacuum circuit breaker, an assembly comprising multiple vacuum circuit breakers, and a method for distributing voltage between multiple vacuum circuit breakers.

Abstract

The present invention relates to a vacuum interrupter (1) for switching voltages, in particular high voltages, comprising at least one housing (2), at least one fixed contact (3) and at least one movable contact (4), and at least one control element (8) arranged directly on at least one vacuum interrupter (1). The present invention further comprises an assembly comprising a number of vacuum interrupters (1) as described above electrically connected in series, and further comprises a method for voltage distribution of a number of vacuum interrupters (1) by means of a number of control elements (8), in particular by means of a number of capacitors and / or a number of resistors arranged directly on these vacuum interrupters (1).

Description

Technical Field

[0001] The present invention relates to a vacuum circuit breaker for opening and closing a voltage, comprising at least one outer casing, at least one fixed contact, and at least one movable contact. Further, the present invention includes an assembly comprising a plurality of the above-described vacuum circuit breakers, and a method for voltage distribution of the plurality of vacuum circuit breakers.

[0002] A plurality of vacuum circuit breakers, or a vacuum circuit breaker provided with an assembly of a plurality of vacuum circuit breakers, is, for example, a power switch in which a plurality of opening and closing contacts movable relative to each other are arranged in at least one vacuum interruption chamber. In high voltage technology, such vacuum circuit breakers are used for opening and closing in a high voltage range, particularly at voltages of 52 kV or higher, and / or for opening and closing large currents in the range up to several tens of kiloamperes. In particular, the vacuum circuit breakers included in the assembly for opening and closing require little maintenance, have a long life, and are particularly easily and reliably driven via a spring-operated drive device. For requirements for high voltage, for example, an assembly comprising a plurality of vacuum circuit breakers is used, and the plurality of opening and closing paths thereof are electrically connected in series, for example, as known from Patent Document 1. Instead, for example, a plurality of vacuum circuit breakers each having a plurality of opening and closing paths in particular within one vacuum circuit breaker are used.

[0003] In the case of a plurality of vacuum circuit breakers, when the opening and closing paths of these vacuum circuit breakers are open, in order to avoid overloading of individual vacuum circuit breakers, a voltage distribution (Absteuerung) suitable for these vacuum circuit breakers is desired for the plurality of vacuum circuit breakers. In particular, when there are a plurality of vacuum circuit breakers each having a plurality of opening and closing paths within one vacuum circuit breaker, when the plurality of opening and closing paths of the vacuum circuit breaker are open, a voltage distribution suitable for these opening and closing paths is desired in order to avoid overloading. For example, in the case of a plurality of vacuum circuit breakers or a plurality of opening and closing paths that are identically formed and connected in series one after another, in order to avoid overloading, as uniform a voltage distribution as possible for these vacuum circuit breakers or opening and closing paths is desired. When using one vacuum circuit breaker having one opening and closing path, for example, on that vacuum circuit breaker or on the opening and closing path, similarly, as uniform a voltage distribution as possible is desired.

[0004] To achieve a desired voltage distribution across multiple vacuum circuit breakers or multiple switches, several passive electrical components, such as control resistors, are connected in parallel to a single vacuum circuit breaker. However, these components increase the installation space required for a single vacuum circuit breaker or for an assembly with multiple vacuum circuit breakers. In particular, in the case of vacuum circuit breakers with cleaned and dehumidified compressed air, i.e., clean air, as the insulating gas surrounding the vacuum circuit breaker, a considerably large insulation distance is required between a single vacuum circuit breaker and a single passive electrical component, and between a single passive electrical component and the particularly metal circuit breaker housing of an assembly consisting of one or more vacuum circuit breakers. This is because the insulating strength of compressed air is lower compared to other insulating gases such as sulfur hexafluoride. To achieve sufficient insulation between multiple vacuum circuit breakers and a circuit with multiple passive components, it is possible, for example, to place an assembly consisting of multiple vacuum circuit breakers and the connected passive components in multiple separate housings. However, these configurations require a large installation space and are costly. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] German Patent Application Publication No. 102013208419A1 Specification [Overview of the project] [Problems that the invention aims to solve]

[0006] The object of the present invention is to enable voltage distribution in a single vacuum circuit breaker and / or in an assembly containing multiple vacuum circuit breakers in a space-saving manner. [Means for solving the problem]

[0007] This problem is solved by the present invention by a vacuum circuit breaker for voltage switching having the features of claim 1, an assembly according to claim 10 including a plurality of the above-described vacuum circuit breakers, and / or a plurality of vacuum circuit breakers according to claim 12, in particular a method for voltage distribution of the plurality of the above-described vacuum circuit breakers. Advantageous embodiments of the vacuum circuit breaker according to the present invention for voltage switching, and / or an assembly according to the present invention including a plurality of the above-described vacuum circuit breakers, are described in the dependent claims. The subject matter of the main claim can be combined with the features of the dependent claims, and the features of the plurality of dependent claims can be combined with each other.

[0008] A vacuum circuit breaker according to the present invention for switching voltage includes at least one enclosure, at least one fixed contact, and at least one movable contact. According to the present invention, at least one control element is included, which is mounted directly on at least one vacuum circuit breaker.

[0009] Multiple control elements that are in direct contact with or separated from a single vacuum circuit breaker by only a few millimeters are considered, in the following, to be directly mounted on at least one vacuum circuit breaker. In particular, these control elements are not housed in a common housing separate from the housing of this vacuum circuit breaker. By directly mounting multiple control elements on at least one vacuum circuit breaker, a compact, space-saving, and low-cost assembly of the multiple control elements and at least one vacuum circuit breaker is possible, particularly in at least one common housing that is filled with clean air and reduces the risk of electrical flashover. The compact structure allows for material savings, especially smaller housing sizes, reduces costs, enables the use of alternative switching gases such as clean air in compact assemblies, and allows for simple and environmentally friendly use of the vacuum circuit breaker.

[0010] This vacuum circuit breaker may include a single enclosure having at least one main shield and at least two ceramic segments, the at least one main shield being positioned between at least two ceramic segments. This at least one control element may be positioned directly on the enclosure of the vacuum circuit breaker, or particularly directly on at least one ceramic segment of the enclosure. By positioning at least one control element directly on the enclosure of the vacuum circuit breaker, or particularly directly on at least one ceramic segment of the enclosure, a space-saving structure is possible, providing the advantages described above, and the electrical insulation properties of the ceramic segments enhance the electrical dielectric strength.

[0011] At least one control element may include at least one capacitor and / or at least one resistor, and / or at least one control element may consist of at least one capacitor and / or at least one resistor, and / or all control elements may consist of multiple capacitors and / or multiple resistors. Multiple capacitors and resistors are suitable for voltage distribution on multiple vacuum circuit breakers, or for controlling or precisely influencing the voltage drop across multiple components of a vacuum circuit breaker, such as open switching contacts, a main shield, and / or multiple ceramic segments. In particular, multiple capacitors or multiple resistors, or a combination of multiple capacitors and multiple resistors, are suitable for generating a predetermined desired voltage distribution or a predetermined desired potential drop along multiple vacuum circuit breakers. In this case, these capacitors and resistors are inexpensive, compact, and can be easily manufactured and installed.

[0012] The assembly may include at least two control elements, and more particularly three or more, which are arranged in a circular or concentric manner around the circumference of at least one vacuum circuit breaker. Such an assembly allows for a uniform electric field and voltage distribution around a single vacuum circuit breaker, and a space-saving division of the required capacitance and / or ohm resistance, in multiple individual units that require less space.

[0013] A single shielding ring, particularly a ring-shaped and / or circular shielding ring, may be included, which can be positioned directly on the casing of the vacuum circuit breaker and / or surround the circumference of the vacuum circuit breaker. Multiple such shielding rings allow for good shielding of the outward electric field of the vacuum circuit breaker and uniformity of the distribution of electric and / or magnetic fields around the vacuum circuit breaker. These shielding rings can be electrically and / or mechanically connected to the shield or vapor shield within the vacuum circuit breaker.

[0014] Multiple shielding rings may be included, each of which is spaced apart from the others in the longitudinal direction of the vacuum circuit breaker and positioned around each ceramic segment. Multiple shielding rings allow the aforementioned advantages to be easily achieved around the entire vacuum circuit breaker.

[0015] At least one control element can be electrically and / or spatially positioned between at least one fixed contact and at least one movable contact, particularly between at least one fixed contact and one shielding ring, and / or between at least one fixed contact and one main shield, and / or between one shielding ring and one main shield, and / or between two shielding rings, and / or between at least one movable contact and one shielding ring, and / or between at least one movable contact and one main shield. Electrical contact of these control elements can be made through both contacts, multiple shielding rings, and / or the main shield. By thus directly positioning multiple control elements on the circumference of the vacuum circuit breaker, between multiple contacts, multiple shielding rings, and / or the main shield, a space-saving and compact assembly, simple electrical contact, uniform electric field distribution due to even distribution around the circumference of the vacuum circuit breaker, and particularly uniform and discrete division of capacitance and / or ohm resistance between the multiple contacts, multiple shielding rings, and / or the main shield are possible.

[0016] The total capacitance of at least one control element and / or more control elements can be in the range of 10 to 4000 pF, particularly 500 to 4000 pF. These values ​​enable precise and defined voltage distribution or voltage division along the long axis and / or circumference of the vacuum circuit breaker, and include a total value for voltage distribution, particularly in the range of 52 kV and above. This vacuum circuit breaker can be designed to switch voltages in the high voltage range, particularly in the range of 52 kV and above.

[0017] An assembly according to the present invention, comprising multiple vacuum circuit breakers as described above, comprises at least two, and more than two, vacuum circuit breakers, which can be electrically connected in series. Switching of high voltage levels, particularly high voltages in the range of 52 kV or higher, can thus be performed using multiple vacuum circuit breakers that are low cost and easy to manufacture. Voltage distribution as described above, using multiple control elements, each installed along the circumference and / or long axis of the multiple vacuum circuit breakers, enables voltage distribution on the multiple vacuum circuit breakers and precise voltage distribution to the individual vacuum circuit breakers connected in series successively. This makes it possible to achieve the aforementioned advantages, particularly in space-saving and compact structures or assemblies.

[0018] The assembly according to the present invention may include a single metal tank housing and / or insulating housing in which a vacuum circuit breaker or a vacuum circuit breaker can be placed, and in particular has a metal tank housing and / or insulating housing filled with clean air as the insulating gas. A compact assembly in which multiple control elements are placed directly on the vacuum circuit breaker along the circumference and / or major axis allows for a compact metal tank housing and / or insulating housing with lower material and cost expenditures, a reduced risk of electrical flashover, reduced amount of insulating gas, and / or the ability to use climate-friendly or climate-neutral insulating gases such as clean air in a compact, standard housing that is available, for example, at low cost.

[0019] A method according to the present invention for performing voltage distribution of a plurality of vacuum circuit breakers, in particular of the plurality of vacuum circuit breakers described above, and / or the assembly described above including the plurality of vacuum circuit breakers, includes performing voltage distribution by a plurality of control elements directly arranged on the plurality of vacuum circuit breakers, in particular by a plurality of capacitors and / or a plurality of resistors.

[0020] The advantages of the voltage distribution method according to claim 12 of the present invention for a plurality of vacuum circuit breakers, particularly for the above-mentioned plurality of vacuum circuit breakers, and / or for an assembly comprising the above-mentioned plurality of vacuum circuit breakers, and the advantages of the assembly according to claim 10 of the present invention comprising a plurality of vacuum circuit breakers are the same as the advantages of the vacuum circuit breaker according to claim 1 of the present invention for voltage opening and closing, and vice versa.

[0021] Hereinafter, a plurality of embodiments of the present invention will be schematically shown and described in more detail.

Brief Description of the Drawings

[0022] [Figure 1] A schematic view of the vacuum circuit breaker 1 according to the present invention for voltage opening and closing, seen obliquely from the side, with a plurality of control elements 8 arranged directly on the outer casing 2 of the vacuum circuit breaker. [Figure 2] An assembly 11 according to the present invention in which two vacuum circuit breakers of FIG. 1 are connected in series is shown. This assembly 11 is contained within one housing 9, which housing is filled with, for example, clean air as an insulating gas.

Modes for Carrying Out the Invention

[0023] FIG. 1 is a schematic view of the vacuum circuit breaker 1 according to the present invention for opening and closing a voltage, particularly a high voltage in the range of 52 kV or more, seen obliquely from the side. This vacuum circuit breaker 1 has one outer casing 2, which includes, among other things, one main shield 5 in the central part and ceramic segments 6 adjacent to its left and right sides respectively. This main shield 5 and these ceramic segments 6 are formed in a hollow cylindrical or tubular shape and are fluid-tightly sealed at both ends of the vacuum circuit breaker 1 respectively. The interior of the vacuum circuit breaker 1 is evacuated, that is, it is in a vacuum. The contacts 3 and 4 protrude into the outer casing 2 of the vacuum circuit breaker 1 from both ends of the vacuum circuit breaker 1. For example, the fixed contact 3 protrudes from one side of the cylinder, that is, from the base surface, and the movable contact 4 protrudes from the other side of the cylinder, that is, from the cover surface of the vacuum circuit breaker.

[0024] The main shield 5 is made of, for example, metal, especially stainless steel, and has, for example, a plurality of vapor shields inside, which are not shown for the sake of simplicity. The plurality of hollow cylindrical ceramic segments 6 are manufactured, for example, from sintered ceramics and are especially surface-treated. The contacts 3 and 4 are made of, for example, copper and are especially bolt-shaped, and have, for example, dish-shaped ends with slits inside the vacuum circuit breaker 1. The fixed contact 3 is fluid-tightly connected to a lid-shaped closure at one end of the vacuum circuit breaker 1, and this closure is made of, for example, metal, especially copper and / or steel. The movable contact 4 is fluid-tightly connected to a lid-shaped closure at the other end of the vacuum circuit breaker 1 and is supported movably, for example, via bellows, which is not shown in FIG. 1 for the sake of simplicity. Here, this closure is made of, for example, metal, especially copper or steel.

[0025] This vacuum circuit breaker can be electrically connected via the bolts of the fixed contact 3 and the movable contact 4 led to the outside. When the movable contact 4 closes the circuit, it moves toward the fixed contact 3, that is, by closing the gap between the dish-shaped contact ends of the contacts 3 and 4, electrical switching is made possible. When interrupting, by operating away from the fixed contact 3, that is, by creating a gap between the dish-shaped contact ends of the contacts 3 and 4, electrical switching is made possible. Since the gap between the contact ends of both contacts 3 and 4 and the contact ends themselves are arranged inside the evacuated interior of the vacuum circuit breaker 1, in particular, for interrupting high voltages, a gap in the range from several millimeters to several centimeters is sufficient. This vacuum circuit breaker 1 has, for example, a length especially in the range of 30 to 100 cm and a circumference especially in the range of 10 to 100 cm.

[0026] According to the present invention, a plurality of control elements 8 are directly arranged on the casing 2 of the vacuum circuit breaker 1. These control elements 8 are, for example, capacitors and / or resistors. The capacitors are particularly ceramic capacitors, and the capacitance values ​​of the individual capacitors are, for example, in the range of 10 to 4000 pF. Therefore, the total capacitance of this assembly is, for example, in the range of 10 to 4000 pF. The resistors are particularly ohm resistors, and the values ​​of the individual resistors are, for example, in the range of a few ohms to several hundred ohms, or to several thousand ohms, or to tens of thousands of ohms, or to several hundred thousand ohms. Therefore, the total resistance value is in the range of a few ohms to several hundred ohms, several thousand ohms, tens of thousands of ohms, or to several hundred thousand ohms.

[0027] The shape of the control element 8 is, for example, cylindrical, rectangular, and / or elliptical. The assembly of the control elements 8 along the circumference of the casing 2 of the vacuum circuit breaker 1 is, for example, carried out in a circular manner along the cross-section of the circumference. Here, these control elements are interconnected in particular regularly and / or equally spaced, in particular in parallel with each other, and / or electrically interconnected in series along the long axis of the vacuum circuit breaker 1. The electrical contact of multiple adjacent and series-connected control elements 8 is carried out, for example, via multiple shielding rings 7, each arranged or formed in a circular or ring shape along the cross-section of the circumference of the vacuum circuit breaker 1, and these multiple shielding rings 7 are spaced apart from each other along the long axis of the vacuum circuit breaker 1.

[0028] As shown in Figure 1, these control elements 8 are arranged electrically and spatially apart on the circular cross-section of the vacuum circuit breaker 1, for example, along the circumference of the outer casing 2 of the vacuum circuit breaker 1, and are arranged particularly symmetrically along the long axis of the vacuum circuit breaker 1, between the fixed contacts 3 and the movable contacts 4, especially between the fixed contacts 3 and one vapor shield 7, between two adjacent vapor shields 7, between one vapor shield 7 and the main shield 5, between the main shield 5 and one vapor shield 7, between two adjacent vapor shields 7, and between one vapor shield 7 and the movable contacts 4. In this case, the multiple vapor shields 7 and the one main shield 5 help to ensure good conductive contact between the multiple control elements 8 and between the contacts 5 and 6, for example, through the lid-like closing portions at both ends of the vacuum circuit breaker 1, and especially through the bellows in the case of the movable contacts 4.

[0029] These shielding rings 7 are made of metal, particularly copper and / or steel, and can divide the ceramic segments 6 by a plurality of vapor shields that protrude into the vacuum circuit breaker 1. The connections of the components of the vacuum circuit breaker 1, such as the plurality of ceramic segments 6, the main shield 5, the plurality of shielding rings 7, and the plurality of lid-like closures, and / or the control element 8 are made, for example, by brazing and / or conductive adhesive bonding. The direct installation of the control element 8 on the vacuum circuit breaker 1 or on the sheath 2 of the vacuum circuit breaker 1 involves material bonding mechanical contact with the sheath 2 and / or has a small gap ranging from a few millimeters, in which case the direct contact with the sheath is made, for example, via the plurality of vapor shields 7, the main shield 5, and / or the lid-like closures.

[0030] These control elements 8 are arranged between multiple shielding rings 7, for example, along the long axis of the vacuum circuit breaker 1, parallel to the long axis, in particular, linearly or curvedly, or offset from each other. This arrangement of control elements 8 on the circumference of the vacuum circuit breaker 1 creates, for example, a regular or irregular pattern. A direct arrangement of control elements 8 on the circumference of the vacuum circuit breaker 1 or its casing 2 results in a space-saving assembly with a minimum cross-section.

[0031] In Figure 2, two vacuum circuit breakers 1 according to Figure 1 of the present invention are arranged in series according to an assembly 11 of multiple vacuum circuit breakers 1 according to the present invention. Multiple vacuum circuit breakers 1 are arranged in a single housing 9, or spatially enclosed by this housing 9. This housing 9 is, for example, a hermetically sealed metal tank and / or a hermetically sealed insulating housing. The metal tank housing is, for example, made of steel and / or aluminum and is applied to the ground potential, particularly in the form of a dead tank. The insulating housing is, for example, made of ceramic, silicone and / or composite material and has a ribbed outer surface in particular for extending leakage current paths. The housing 9 is filled with, for example, climate-neutral clean air as an insulating gas 10. Alternatively, insulating gas 10 such as SF6 and / or CO2 may be used.

[0032] These vacuum circuit breakers 1 are connected to each other via both fixed contacts 3, in particular, directly, as shown in Figure 2. Alternatively, these vacuum circuit breakers 1 may also be connected to each other via both movable contacts 4, in particular electrically and mechanically, or via one movable contact 4 and one fixed contact 3. One or more drive devices, such as motor drive devices and / or spring drive devices, are provided to drive the movable contacts 4 when electrically switched on or off, but these are not shown in the drawings for simplicity. For example, one drive device may be provided for each movable contact 4, or one common drive device with a gear in particular may be included to mechanically drive multiple movable contacts 4.

[0033] The multiple embodiments described above can be combined with each other and / or with the prior art. Therefore, for example, more than two vacuum circuit breakers 1 can be interconnected, particularly in series and / or in parallel. The control elements 8 can have different shapes, particularly cylindrical, elliptical cylindrical with an elliptical base and top surface, rectangular, square, and / or shapes having convex and / or concave surfaces. The control elements 8 are fixed, for example, on the vacuum circuit breaker 1, by brazing to metal parts, particularly copper parts, by screwing, by adhesive bonding, by clamping, and / or welding. Multiple control elements 8 are installed, for example, directly by friction bonding and / or fixed, particularly by spring coupling, in a state where they are electrically insulated from the ceramic segments 6, particularly by insulating paint and / or surface treatment. And / or, these control elements 8 are fixed to the casing 2, particularly to the ceramic segment 6, for example, directly, or at a small distance from the ceramic segment 6, particularly between the multiple vapor shields 7, the main shield 5, and / or the contacts 3, 4, for example, by screwing, clamping, brazing, bonding, and / or, particularly by spring couplings. The small distance ranges, for example, from a few millimeters to 1 centimeter.

[0034] Multiple control elements 8 are arranged as individual components, particularly spaced apart from one another, on, for example, the casing 2 of one vacuum circuit breaker 1 or multiple vacuum circuit breakers 1. In this case, the assembly is, for example, made in a ring shape along, for example, a circular cross-section of the vacuum circuit breaker 1, with multiple different rings installed along the long axis of the vacuum circuit breaker 1. Multiple adjacent control elements 8 in the multiple different rings are arranged, for example, in a straight line or offset from one another. Alternatively, these control elements 8 can be arranged, for example, on a helical line, i.e., spirally. Other multiple assemblies and / or combinations of multiple assemblies are also possible.

[0035] Using the vacuum circuit breaker 1 described above according to the present invention, and an assembly according to the present invention in which a plurality of vacuum circuit breakers 1 are interconnected one after another, particularly in series, it is possible to distribute voltage across a plurality of vacuum circuit breakers 1 via a plurality of control elements 8. For example, voltage can be assigned uniformly or differently in a predetermined manner to elements of the vacuum circuit breaker 1 and / or vacuum circuit breaker 1, such as ceramic segments 6 of different lengths, via the selection of control elements 8 and their interconnections. This assembly of a plurality of control elements 8 on one or more vacuum circuit breakers 1 enables a compact and space-saving structure, thereby enabling a low-cost, spatially minimized housing 9, in particular, with a small, or minimized, and / or standard-sized housing, and enabling the use of insulating gases such as clean air. [Explanation of Symbols]

[0036] 1. Vacuum circuit breaker 2 Outer cover 3 Fixed contacts 4 Movable contacts 5. Main Shield 6 Ceramic Segments 7 Shield Ring 8 control elements 9 Housing 10 Insulating gas 11. Assembly with multiple vacuum circuit breakers

Claims

1. A vacuum circuit breaker (1) for switching voltage, comprising at least one enclosure (2), at least one fixed contact (3), and at least one movable contact (4), It includes at least two control elements (8), The at least two control elements (8) are directly arranged on the at least one vacuum circuit breaker (1), The at least two control elements (8) are arranged in a circular pattern on the circumference of the at least one vacuum circuit breaker (1), The vacuum circuit breaker (1) includes a single enclosure (2) having at least one main shield (5) and at least two ceramic segments (6), The at least one main shield (5) is positioned between the at least two ceramic segments (6), The at least two control elements (8) are arranged directly on the outer casing (2) of the vacuum circuit breaker (1). A vacuum circuit breaker (1) characterized by the following:

2. The at least two control elements (8) include at least one capacitor and / or at least one resistor, and / or The at least two control elements (8) are at least one capacitor and / or at least one resistor, and / or The vacuum circuit breaker (1) according to claim 1, characterized in that all control elements are composed of a plurality of capacitors and / or a plurality of resistors.

3. It includes multiple shielding rings (7), The vacuum circuit breaker (1) according to claim 1, characterized in that each of the plurality of shield rings (7) is spaced apart from each other in the longitudinal direction of the vacuum circuit breaker (1) and arranged around each ceramic segment (6).

4. The at least two control elements (8) are located between the at least one fixed contact (3) and the at least one movable contact (4), and / or Between at least one fixed contact (3) and the main shield (5), and / or Between one shield ring (7) and the main shield (5), and / or Between the two shield rings (7), and / or, Between at least one movable contact (4) and one shielding ring (7), and / or Between at least one movable contact (4) and the main shield (5), Electrically and / or spatially arranged, The vacuum circuit breaker (1) according to feature 1.

5. The vacuum circuit breaker (1) according to claim 1, characterized in that the total capacitance of the at least two control elements (8) is in the range of 10 to 4000 pF.

6. The vacuum circuit breaker (1) according to claim 1, characterized in that the vacuum circuit breaker (1) is formed to switch on and off voltages in a high voltage range.

7. An assembly (11) comprising a plurality of vacuum circuit breakers according to any one of claims 1 to 6, An assembly characterized in that at least two vacuum circuit breakers (1) are electrically connected in series.

8. The assembly (11) according to claim 7, characterized in that it includes a metal tank housing and / or insulating housing (9) in which the plurality of vacuum circuit breakers (1) are arranged and which is filled with clean air as an insulating gas (10).

9. A method for distributing voltage between a plurality of vacuum circuit breakers (1) according to any one of claims 1 to 6, A voltage distribution method characterized in that the voltage distribution is performed using a plurality of control elements (8).

10. A method for distributing voltage in a vacuum circuit breaker assembly (11) according to claim 7, A voltage distribution method characterized in that the voltage distribution is performed using a plurality of control elements (8).

11. A method for distributing voltage in a vacuum circuit breaker assembly (11) according to claim 8, A voltage distribution method characterized in that the voltage distribution is performed using a plurality of control elements (8).

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