DISCONNECTING SWITCH FOR HIGH DIRECT OR ALTERNATING CURRENTS AT HIGH VOLTAGE

Abstract

A switch (10), particularly a disconnecting switch (10) for high direct currents and alternating currents at high voltages, can be transferred from a conducting position into a disconnecting position. The switch (10) is includes a housing (12), a first contact (28), a second contact (30), a switching piston (24) guided by the housing (12) with a connecting element (22), which establishes an electrical connection in the connecting position between the first contact (28) and the second contact (30). The housing (12) defines an interior space surrounding the connecting element (22). The connecting element (22) extends at least partially in the interior space (18) and is filled with an insulating medium (20), and the switch is designed such that a mechanical movement of the switching piston (24) transfers the switch (10) from the connecting position into the disconnecting position. The switching piston (24) mechanically impacts the connecting element (22) such that the electrical connection between the first contact (28) and the second contact (30) is interrupted in at least one disconnecting location.

Claims

1. A switch, in particular a disconnecting switch (10) for high direct and alternating currents at high voltages which can be transferred from a conducting position to a disconnecting position, comprising: a housing (12), a first contact (28), a second contact (30), a piston (24) guided by the housing (12), and a connecting element (22) for creating an electrical connection between the first contact (28) and the second contact (30), the housing (12) defining an interior space surrounding the connecting element (22), the connecting element extending at least in sections in the interior space (18), the interior space (18) filled with an insulating medium (20), the switch configured such that a mechanical movement of the switching piston (24) transfers the switch (10) from the conducting position into the disconnecting position, and wherein the switching piston (24) acts mechanically on the connecting element (22) to interrupt the electrical connection between the first contact (28) and the second contact (30) at least in one separating location.

2. A switch according to claim 1, further comprising a drive arranged outside of the interior space (18) of the housing (12) for moving the switching piston (24) and impacting the switching piston (24) after an activation of the driver with a movement force causing the movement of the switching piston, and wherein the drive is designed as an inductive drive, as an eddy current drive, or as a gas pressure drive, which generates gas pressure by means of a gas generating material.

3. A switch according to claim 2, wherein the gas pressure drive is provided with a combustion chamber (68) separated from the inner space (18) of the housing (12) and including the gas generating material, and wherein the switching piston is designed such that it can be directly impacted by gas pressure to generate the movement of the switching piston, or wherein the switching piston can be impacted indirectly by the gas pressure, so that an element that is moved by gas pressure impacts the switching piston.

4. A switch according to claim 2, wherein the volume available in the combustion chamber (68) that is not used by the gas generating material is filled, at least partially, preferably substantially completely, with a liquid, solid or gel-like material.

5. A switch according to claim 1, wherein the insulating medium (20) is a silicate or a mineral or quartz sand.

6. A switch according to claim 1, wherein the connecting element (22) is a small tube, a wire, or a flat element, in particular an element in the form of a belt.

7. A switch according to claim 1, wherein the mechanical movement of the switching piston (24) for transferring the switch (10) from the conducting position into the disconnecting position is a translatory motion in the direction along a main extension of the connecting element (22), or a movement at an angle in the range from 5° to 90° to the direction of the main extension of the connecting element (22).

8. A switch according to claim 7, wherein the translatory motion of the connecting element (22) ruptures or severs the connecting element (22) from the first contact (28) and/or the second contact (30), wherein the translatory motion of the switching piston (24) is continued through the position of the rupture or through the position of the severed electrical contact.

9. A switch according to claim 1, wherein the connecting element is designed as a fusible element, for example a fusible wire, so that the switch (10) will be transferred with a certain electrical load without the movement of the switching piston (24) into a disconnecting position, wherein a simultaneous or subsequent movement of the switching piston (24) increases a separating distance (t).

10. A switch according to claim 1, wherein the connecting element (22) is provided with at least one mechanically weakened cross-section, in order to define geometrically at least one disconnecting position.

11. A switch according to claim 2, wherein the gas pressure drive is provided with a membrane (76), which becomes deformed during the activation of the gas pressure drive, and wherein the switching piston (24) is mechanically connected with the membrane (76) so that a movement of the membrane is transferred to the switching piston (24).

12. A switch according to claim 11, further comprising a membrane supporting element, for example a membrane supporting ring (78), which limits the movement of the membrane (78) as a result of the gas pressure in at least one or in a plurality of partial areas.

13. A switch according to claim 11, wherein the membrane consists of a plurality of material layers overlaid one upon another.

14. A switch according to claim 1, wherein the connecting element (22) is provided with one or a plurality of electrically weakened cross-sections so as to reach with a certain overload amount the disconnection of the connecting element due to overload current, and wherein two or more electrically effectively weakened cross-sectional regions, which, however, are spatially separated from each other, can be arranged one behind another in the longitudinal direction of the connecting element (22), in order to achieve a correspondingly reduced switching voltage relative to the external source voltage applied to the switch (10) with a desired overload affecting one or multiple disconnecting locations.

15. A switch according to claim 1, wherein a pyrotechnic material (6) is mounted on the connecting element (22) for triggering or supporting the formation of a disconnecting position, or wherein the connecting element is provided with a cavity (52) acting as a combustion chamber (58) into which the pyrotechnic material is introduced, wherein the volume of the combustion chamber that is not used up by the gas generating material is preferably filled, at least partially, preferably substantially completely, with an oil-like, gel-like, grease-like, or solid filler in order to reduce the empty volume in the combustion chamber and at the same couple the pressure wave generated by the ignition element (80) with an improved, small attenuation on the membrane (76).

16. A switch according to claim 2, wherein the drive is configured to generate the gas pressure by combustion or oxidation of a liquid and/or solid gas generating material, in particular with a pyrotechnic gas generating material capable of being activated.

Description

[0059] Further features as well as advantages of the invention will become apparent from the following drawings and the accompanying descriptions. In the figures and in the descriptions belonging to the drawings are described the combinations of the features of the invention. However, these features can be also included in other combinations according to the object of this invention. Each disclosed feature is therefore to be considered also as a technically advantageous combination in combination with other features. The figures are partially slightly simplified and schematic. The following figures show in each case the same switch in its conductive position (in each case in Fig. a), as well as in its disconnecting position (in each case in Fig. b).

[0060] FIG. 1 shows a first embodiment of the invention in a cross-sectional view, wherein a crack or a separation point t is generated in the connecting element.

[0061] FIG. 2 shows a corresponding view of another embodiment, in which the connecting element is pulled out from the first contact and therefore separated from it.

[0062] FIG. 3 shows an embodiment corresponding to FIG. 1, in which, however, another housing and other contact points are provided.

[0063] FIG. 4 shows another embodiment of the invention, in which the housing is provided with a folded bellows.

[0064] FIG. 5 shows another embodiment of the invention, in which an additional piston housing is provided, wherein the switching piston itself is located inside the housing.

[0065] FIG. 6 shows another embodiment of the invention, in which a Pyroseele is employed, as well as a connecting element that is provided with a plurality of separation points, which are in this case additionally weakened with bores and provided with external pyro elements.

[0066] FIG. 7 shows another embodiment of the invention, in which the drive for tearing open the connecting element occurs through the movement of a membrane, which is thus depressed and deformed with the triggering of an ignition element in the combustion chamber.

[0067] FIG. 8 shows an enlarged view of a preferred connecting element (only in the connecting position).

[0068] FIG. 9 shows another embodiment of the invention, in which the switching piston is moved perpendicularly to the connecting element.

[0069] FIG. 1 and FIG. 1b show a first embodiment of a switch 10 according to the invention. This switch 10 is provided with a housing 12, which is designed essentially with a cylindrical shape. The housing 12 is provided with a housing base 14 and with a housing cover 16. These components delimit the interior 18. The housing interior 18 is filled with insulating medium 20. As shown in the figures, this can be in this case granular insulating medium 20, for example quartz sand. The connecting element 22 extends in the interior space 18. The connecting element 22 is mechanically connected with the switching piston 24. The switching piston 24 is guided by a switching piston guide, which is provided in the form of a bore in the housing cover 16.

[0070] A contact 28 is provided on the outer side of the housing 12 in the vicinity of the housing cover 16. This contact can be manufactured in an integral form with the cover 16 and it is in any case connected with the housing cover 16 so that it is electrically conductive. The housing cover 16 is in its turn connected so that it is electrically conductive in the region of the switching piston 24, which is again connected in an electrically conductive manner with the connecting element 22. The connecting element 22 is connected mechanically and also in an electrically conductive manner with the housing base 14. The housing base 14 is in its turn also designed integrally with the second contact 30. Accordingly, the housing base 14 is also connected in an electrically conductive manner with the second contact 30, so that the second contact 30, which is formed with an annular design around the housing 12, can electrically contact the switch 10.

[0071] FIG. 1b shows the switch 10 in the disconnecting position. The connecting element 22 is separated by pulling on the switching piston 24 in the direction indicated by an arrow in FIG. 1a. It is therefore then provided with a first section and with a second section. Because a separating distance t is located between them, no current can flow. The formation of a light arc is suppressed by the insulating medium 20, which penetrates also into the region of the separating distance t.

[0072] FIG. 2a and FIG. 2b show another embodiment of a switch 10 according to the invention, again both in the conducting position (FIG. 1a), and in the disconnecting position (FIG. 2b). The basic construction of the switch 10 corresponds to the construction illustrated in FIG. 1b. Therefore, only some essential elements of the switch 10 are shown in the figure, which are again indicated by reference symbols. The switch 10 is again provided in a housing 12, which extends between the housing base 14 and the housing cover 16. A connecting element 22 is again provided, which is mechanically connected with the switching piston 24. However, unlike in the embodiment form of FIG. 1, no anchor point 32 is provided on the housing base 14; a receptacle 34 is provided instead. The socket-like receptacle 34, which can be also designed as a multi-contact socket, receives in the conducting position the facing the end of the connecting element 22 facing the socket.

[0073] The arrow shown at the switching piston 24 in FIG. 2a indicates again the pulling direction, in which the switching piston can be pulled from the switch 10, so that the switch piston 24 passes into its disconnecting position. In this case, the connecting element 22 is not ruptured; instead, the connecting element is pulled out from the first receptacle 34. Accordingly, a separating distance t is created between the right end of the connecting element and the receptacle 34.

[0074] Within the context of the present invention, however, other embodiment forms are also conceivable, in which two or more separating distances are created. For example, additionally to the separation of the connecting element from the receptacle 24, another one or a plurality of cracks could be created in the connecting element. The connecting element can be for this purpose provided with weakened regions.

[0075] FIGS. 3a and 3b show another embodiment of the switch 10, which is similar to the embodiment of FIG. 1, but in which the first contact is provided in another manner. A housing base 14 is again provided on the lower side of the housing 12 of the switch 10 and a housing cover 16 is provided on the on the upper side of the housing 12. However, the cover 16 is in this embodiment provided fully enclosed in the housing 12 and it covers the front side of the walls and does not cover the sides of what can be considered a cylindrical shape. Another contacting type is created with this mechanical solution. The first contact is here provided with the contact point 36 on the housing 12, which is located slightly below the housing cover 16. The contact point 36 is again to be thought of as a circumferential ring. The contact point 36 is connected with the connecting element 22 through a contact wire 38. The connection between the contact wire 38 and the connecting element 22 can be created for example via a solder joint. The connection of the contact wire 38 with the contact point 36 can be created with an integral design or through a connecting process, such as for example via a solder joint. As shown in FIG. 3b, the connecting element is ruptured when the switching piston 24 is being pulled out in the same manner as in the embodiment of FIG. 1.

[0076] It goes without saying that also the second contact can be replaced by a radial outer contact, so that the front side would no longer be fully electrically conductive on the entire surface—and in the case of a connecting element that is insulated inside the at the housing base 14, the connecting element 22 would no longer be fully insulated (not shown here).

[0077] FIGS. 4a and 4b show another embodiment of the switch 10. In this embodiment of the switch 10, a cylindrical housing 12 is provided with a cylindrical housing 12 having a housing base 14. A connecting element 22 passes again through the housing 12. However, the housing cover 16 is in this embodiment provided with a folding bellows 40. The folding bellows 40 separates the switching piston 24 from the interior space of the housing 12. An electrical through-feed is provided only for an electric connection of the switching piston 24 with the connection element 22.

[0078] With the movement of the operating piston 24 in the direction indicated with an arrow in FIG. 4a, the switch 10 is transferred to the disconnecting position shown in FIG. 4b. A crack or a separating location t is again created with the movement in the connecting element 22. The folding bellows 40 will be in this case pushed to the left so that it will be then in its relaxed position.

[0079] Therefore, the implementation of the switching piston with the housing cover 16 can be omitted in this embodiment. The internal space of the housing 12 is well sealed externally and in addition, the switching member can be made of an insulator and the electrical disconnection of the safety part/housing with the triggering part can thus be realized in a safer and cleaner manner. This housing variant is also particularly suitable for liquid or gaseous insulation media 20. It is suitable even when a vacuum or a high vacuum is to be created for electrical insulation in the interior space of the housing 12. In the illustration of the example of this embodiment, it is shown that the switching piston 24 is provided in the region facing away from the housing 12 with a handle portion 44. This handle portion 44 can be provided with a gripping ring 46, which is particularly useful for manual operations of the switching piston 24.

[0080] FIG. 5a and FIG. 5b show an embodiment that is not optimized primarily for manual operation of the switching piston 24. In this embodiment is in addition to the housing 12 of the switch 10 also provided an additional piston housing 50. The housing 50 can be also designed integrally with the housing 12. In the embodiment shown in the figure, the piston housing 50 is formed with a separate component, essentially with a cylindrical piece that is provided with the same diameter as the cylinder of the housing 12. As indicated, the cylinder of the piston housing 50 is connected by a plug connection with the housing 12. Accordingly, the housing cover 16 is designed such that it can accommodate both cylinders.

[0081] The switch 10 is equipped in a known manner with a housing base 14 which is again connected with the connecting element 22. The connecting element 22 is connected on the other side with the switching piston 24. The switching piston 24 is equipped with an end plate 48. Although this end plate 48 can be designed identically or similarly to the gripping ring 46, its function is different from that of the gripping ring 46 as will be described below.

[0082] The piston housing 50 is provided with a cavity 52. This cavity is on the left side delimited by a front surface 54. The front surface 54 can be open, (which also permits manual operation of the switching piston 54), or it can be provided with its own cover 16. The induction coil 56 may have an effect at least on the end plate 48 of the switching piston 24. For this purpose, the end plate 48 should be made of a suitable material, for example a ferromagnetic material such as soft iron or steel is suitable for this purpose. With the inductive effect of the induction coil 56 exerted on the switching piston 24, which is advantageously transferred through the end plate 48, the switching piston 24 can be withdrawn from the housing 12 of the switch 10.

[0083] In this manner, the switch 10 is transferred into its disconnecting position, which can be seen in FIG. 5b. The connecting element 22 is again separated into a first section and into a second section so that a separating distance t is located between them. The switching piston 24 protrudes in this case further into the cavity 52 of the piston housing 50. The fact that the cavity 52 is provided ensures that for example other component parts will not impede the movement of the switching piston 24.

[0084] It is also easy to create the construction of a piston housing 50 in which an inductive movement of the switching piston 24 is not provided and the switching piston 24 is instead moved by gas pressure. In this case, the diameter of the end plate 48 of the switching piston 24 is increased up to the housing wall and sealed therein, so that a sealed space is then created between the end plate 48 and the housing cover 16, which is already sealed and which can be compressed with a gaseous media. When the gas pressure is increased here, the switching piston 24 will be driven out from the housing 12 of the switch 10. A corresponding gas pressure can in this case be easily built up with a pyrotechnic means, which will then turn the sealed space described above into a combustion chamber.

[0085] The ignition or activation of the pyrotechnic substance accommodated in the sealed space is then generally carried out with a hot wire, with an explosion wire, with an explosion foil or in a standard manner by a spark or ignition device. Several variants can be used within the context of the present invention.

[0086] FIG. 6 shows another embodiment of the switch 10 in the known view. This embodiment is again provided with a housing 12 having a housing base 14 and a housing cover 16. The interior space 18 of the housing 12 is again filled with insulating medium 20. The insulating medium 20 is arranged in the connecting element 22, which is connected with the switching piston 24. However, the design of the connecting element 22 differs from that of the previous embodiments. The connecting element 22 is here designed as a melting tube. However, its shape does not necessarily need to be round, so that the designation melting tape is also adequate in other embodiments. In two regions of the connecting element 22 are provided a number of bores 58. These bores 58 lead to a cross-sectional narrowing of the current line between the contacts 28 and 30. Due to this cross-sectional narrowing, the current density is greatly increased in particular in these regions. The connected element 22 is thus heated up particularly strongly in these locations, so that the melting point of the material can be reached particularly rapidly in these locations. Alternatively or additionally, the heating can be employed not only to reach the melting point, but also to reach the ignition temperature of the pyro element. Pyro elements 60 are therefore mounted in the region of the bores 58. An explosion is thus triggered with the heating, which is particularly advantageous for the formation of a separating distance.

[0087] The region in which such a weakening is provided via the bores 58 and with the optional additional pyro elements 60 is connected with a sensor wire 62 with a status indicator 64. In the conductive position shown in FIG. 6a, the sensor wire 62 is under a voltage. This voltage is transferred by the wire to the status indicator 64, which is designed in the form of a simple leaf spring. In the separated position shown in FIG. 6b, the sensor wire 62 is separated from the connecting element 22. Accordingly, no voltage is being transferred by it anymore and the leaf spring is clearly visible outside of the housing 12. The leaf spring also serves as a status indicator. This status indicator can be also used to verify the functionality of the switch 10. It goes without saying that the concept of the status indicator with a sensor wire 62 can be also used in other embodiments of the invention.

[0088] This embodiment provides for yet another improvement of the effectiveness of the switch 10, which, however, can be also applied to switches according to other embodiments and in particular to other connecting elements. The connecting element 22, which has substantially the form of a melting tube, is in the cavity in its interior equipped with a Pyroseele, which is to say that the cavity is filled with an explosive substance. This explosive substance can also be brought to an explosion by heating the region of the bores 58. The pyro element 60 can at the same time have a supporting role, although this is not required. The fact that a Pyroseele is provided enhances the formation of the insulating distance.

[0089] For an even more rapid formation of a separating distance and thus also for an even faster contact disconnection it is advantageous when the Pyroseele shown in the embodiment illustrated here is additionally employed also for another purpose. The Pyroseele 60 continues in the piston 24 and functions as a type of a ignition transfer line. A channel-like ignition connection is even provided for this purpose in the piston 24. A pyro filling 60 can thus be ignited with this ignition connection. This pyro filling is located in a part of the cavity in the combustion chamber 68, which is again provided in the piston housing 50.

[0090] In this embodiment, the switch 10 is provided with an additional feature that can thus also be combined with other switches. The switch 10 is again provided with a piston housing 50. This housing encloses a cavity 52. The front surface of the piston 54 is in this case designed as a front wall. The end plate 48 is mechanically movable in the piston housing 50 (as long as the switching piston 24 is not fixed with the connecting element 22).

[0091] This configuration of the switch 10 still makes it possible to use an additional means for the acceleration of electrical disconnection and formation of a separating distance. This additional means can be also combined with switches in other embodiments. In the cavity 52 is between the end plate 48 and the housing cover 16 inserted in the combustion chamber 68 a pyro filling. During an explosion, this pyro filling will move the end plate 48 to the left and onto the front wall 64 of the piston housing.

[0092] The explosion of the pyro filling 60 can be in this case triggered as follows: the explosive substance of the Pyroseele 66 is connected through a channel which functions as an ignition connection 70 with the pyro filling 60. As soon as the explosion triggers the Pyroseele 66 in the described manner, the Pyroseele 66 functions as a pyrotechnic ignition transmission line that causes an ignition of the pyro filling 60. This ignition will obviously cause a movement of the end plate 48 toward and onto the front surface 54. In order to enable the corresponding gas compensation, a wall opening 72 is provided in the front surface 54. This opening can also accept the pin 74 of the end plate 48 and the triggering of the switch is thus enabled, resulting in the releasing of the switch, so that this can be also indicated purely optically to the exterior.

[0093] FIG. 6 also shows that with several weakening locations of the connecting element, created one after another after the triggering of the switch, several electrically disconnecting locations are formed in series. In this manner, high electrical voltage applied to the contacts or to the housing base in the moment of the triggering of the switch is distributed accordingly, so that only a correspondingly smaller portion of the original switching voltage or source voltage will be decreased at each disconnecting location. The potential for creating a light arc is thus very strongly decreased, so that the individual light arcs created in this manner are substantially more quickly and effectively cooled by the insulating medium or extinguished.

[0094] The embodiment of the switch 10 shown in FIG. 6 thus causes a very rapid formation of a separating distance t with three pyrotechnic effects and one electrical effect. The four described effects can be also used individually and independently of each other.

[0095] FIG. 7 shows another embodiment of a switch according to the present invention. The known view is selected again, so that FIG. 7A shows the switch in its conducting position, while FIG. 7B shows the switch in its disconnecting position. The basic components correspond completely to those of FIG. 6. A connecting element 22 is again accommodated in a housing 12. The connecting element 22 is again provided with bores 58 and with a pyro element 60 in the vicinity of the bores 58. However, unlike for example in the embodiment of FIG. 6, a switching piston 24 is not provided here and accordingly, there is also no end plate 48. Instead, the connecting element 22 is introduced inside through an opening into the housing cover 16. It is connected with a membrane 76, which can be also configured as a double membrane or a multi-layered membrane. This membrane 76 is fixed in a housing 50. The housing 50 is again provided with a cavity 52 and with a front wall 54.

[0096] With the aid of, for example, a suitable pyrotechnic means, such as the pyro element 60 and of the Pyroseele 66 that is provided here again, ignition can be initiated again, which leads to the disconnection of the connecting element 22. This is illustrated in FIG. 7b. With a corresponding positioning and dimensioning of the pyrotechnic element, a movement of the parts of the connecting element 22 to the left can be caused in this case, which is to say onto the housing 50. This leads to a bulging of the membrane 76. It is advantageous that the actual weight of a membrane is very low and the movement of the parts of the connecting element into the housing is thus opposed only very little by inertial mass.

[0097] Very fast movement of the membrane 76 onto the front wall 54 can thus be caused in this manner. In order to avoid damages on the membrane 76 itself, it is practical when a membrane support ring 78 is provided.

[0098] In order to enable a rapid movement of the membrane 76, another wall opening 72 can be again provided, as shown, so that no counter-pressure will be created with the compressing of the gas (air) which is present ahead of time in the cavity 52.

[0099] This movement is alternatively or additionally, although as a rule additionally, triggered or strengthened by an ignition element 80. The ignition element can be for example an ignition unit or an igniter. The ignition element 80 is located in this case in the combustion chamber 68 of the housing 50. The combustion chamber 58 can be filled with a propellant charge powder to enhance the effect on the membrane 76. Alternatively or additionally, a filler consisting of a solid, liquid or gel-like material can be also used. Such a filler both reduces the free volume in the combustion chamber and makes it possible to reach higher pressures already with very low amounts of pyrotechnic materials, while on the other hands it also couples in an optimal manner the pressure wave generated during the combustion or conversion of the pyrotechnic material with as little attenuation on the membrane material as possible.

[0100] Alternatively or additionally, a liquid or solid substance can be provided in the combustion chamber 68. Here, a suitable substance is a substance that transits quickly into gaseous phase. For example dry ice can be selected, but also tetrazene, or even water, which has the advantage of producing steam that works very well as it evaporates. Its effect can be further increased when the amount of water in the combustion chamber is adjusted in such a way that a boiling delay will occur during the combustion of the pyrotechnic material.

[0101] These embodiments make it possible to achieve a particularly rapid disconnection of the switch 10, as well as to provide a reliable device while using only a few individual parts and to ensure that a good external seal will be created with little effort, and moreover, that a switch can be manufactured in a cost-effective manner.

[0102] FIG. 8 shows a practical connecting element 22. This connecting element 22 is essentially designed as a melting belt. Such a melting belt can be provided in one or in several regions with one or with a plurality of bores 58. However, it is also possible to use other mechanically weakened points instead of bores, for example recesses or notches of any kind and form, as well as constrictions. Such elements result in an increased current density in the corresponding regions. This in turn causes heating of the connecting element 22, so that this can cause melting of the connecting element 22. Alternatively or additionally to the melting process, an explosive process can be also triggered by the heat. In addition, the pyro element 60 can be also provided in local proximity to the structure weakening elements, which is to say in particular in proximity to the bores 58. Such a connecting element 22 is more effective in the range of higher direct voltages and alternating voltages than a conventional fuse wire. Moreover, When multiple bores 58 are provided, or also when several regions having bores 58 (or corresponding weakening points) are provided, this can also be combined with the formation of several separating distances. As was already mentioned, the formation of a plurality of shorter separating distances is advantageous when compared to one long separating distance because similarly to the in series connection of resistors, only a fraction of the electrical voltage is then applied between the contacts 28 and 30 per separating distance, and it is thus much easier to cool or extinguish the correspondingly weaker light arcs occurring in this manner.

[0103] FIG. 9 shows another embodiment of the switch 10 according to the known view. This embodiment is again equipped with a cylindrical housing 12 that is provided with a housing base 14 and a housing cover 16. The interior space 18 of the housing 12 is filled with an insulating medium 20. In the insulating medium 20 is arranged a connecting element 22, which is connected with a switching piston 24. However, the switching piston 24 is arranged here perpendicularly to the connecting element 22. A separating distance is therefore created so that the sections of the connecting element 22 are shifted at an angle to the direction of the main extension of the connecting element (which is usually quickly ruptured). A practical angle is in this case in the range between 5° and 90°, although only the angle of 90° is shown here.

[0104] For the switching piston 24 is in this case provided a piston housing 50 which is placed at right angle on the cylindrical wall of the housing 12.

[0105] The switching piston 24 generates multiple separation points in the connecting element 22. For this purpose, the switching piston is connected with a collector 82, which in turn is connected by a connector 84 (designed as a connecting hook) with the connecting element 22 acting on the connecting element. A location with multiple separations can thus be created, wherein many small separating distances can be formed in a predetermined manner.

[0106] A robust disconnecting switch can thus be produced in the described manner inexpensively, which can be triggered manually with only minor modifications, while it can be also controlled remotely, which is to say triggered in this manner.

LIST OF REFERENCE SYMBOLS

[0107] 10 switch [0108] 12 housing [0109] 14 housing base [0110] 16 housing cover [0111] 18 interior space [0112] 20 insulating medium [0113] 22 connecting element [0114] 24 switching piston [0115] 26 switching piston guide [0116] 28 first contact [0117] 30 second contact [0118] 32 anchor point [0119] 34 receptacle [0120] 36 contact point [0121] 38 contact wire [0122] 40 folding bellows [0123] 42 electrical feed-through [0124] 44 grip area [0125] 46 gripping ring [0126] 48 end plate [0127] 50 piston housing [0128] 52 cavity [0129] 54 front wall/front surface [0130] 56 induction coil [0131] 58 bore [0132] 60 pyro element [0133] 62 sensor wire [0134] 64 leaf spring [0135] 66 Pyroseele [0136] 68 combustion chamber [0137] 70 ignition connection [0138] 72 wall opening [0139] 74 pins, visual element [0140] 78 membrane support [0141] 80 ignition element [0142] 82 collector [0143] 84 connector [0144] t separating distance