EP2882050A2 - Multiple spark route for lightning protection - Google Patents

Abstract

The invention relates to a multiple spark gap for lightning protection, consisting of between terminal contact plates and contact plates with connection means for electrical conductors arranged spark gaps, an insulating housing (1) is arranged, which has a plurality of mutually insulated chambers (2, 3, 4), a terminal contact plate (6 ) and thereupon a contact with this contacted spark gap (7) is inserted, wherein from the terminal contact plates (6) each connection means (8) are discharged for each electrical conductor through the housing to the outside of the insulating housing (1), wherein the open side of the housing by a first Contact plate (9) made of electrically conductive material is covered, which is contacted with the spark gaps (7) on its terminal contact plates (6) facing away from and connected to the insulating housing (1) by connecting means, wherein the first contact plate (9) connecting means ( 13) for electrical Head has.

Description

The invention relates to a multiple spark gap for lightning protection, consisting of between terminal contact plates and contact plates with connection means for electrical conductors arranged spark gaps.

From the DE 2013 102 647 a multiple spark gap is known. As in the present invention, the electrode plates are preferably provided in the form of circular graphite disks. The annular insulation there is preferably made of washers of polytetrafluoroethylene, as in the present invention.

The prior art is further on the WO 2012/052388 A1 directed.

In the prior art, it has been customary and necessary that in each case for each phase of the power network such a multiple spark gap is arranged, and also provide between PE and neutral a corresponding spark gap. This means a considerable installation effort for example, the triple arrangement in a network with three phase arresters or even the quadruple arrangement, if in addition a hedge between PE-N should take place. From this conventional arrangement results not only an additional installation effort, but this arrangement also requires a corresponding installation space. Such installation space is regularly limited in installation cabinets or the like, in which such spark gaps are provided.

Based on this prior art, the present invention seeks to provide a multi-pole spark gap, which has a compact relatively small design, allows for simplified assembly and additionally brings handling advantages.

To solve this problem, the invention proposes that an insulating material housing is arranged, which has a plurality of mutually insulated chambers, which open to a housing side open and in which each of the housing bottom adjacent to a terminal contact plate and on a contacted with this spark gap is used, of the connection contact plates each connecting means for each electrical Conductor are discharged through the housing to the outside of the insulating material, that the open side of the housing is covered by a first contact plate of electrically conductive material, which is contacted with the spark gaps on its side facing away from the housing bottom and the terminal contact plates and is connected to the insulating housing by connecting means, wherein the first contact plate comprises connection means for electrical conductors.

The invention provides a multipolar spark gap in a single device. This has a reduced space requirement compared to the conventional modular design result. Furthermore, the assembly effort is reduced and also simplifies handling, because only a single device must be installed, but not several devices must be arranged side by side.

According to the invention a plurality of mutually insulated chambers are provided in an insulating material, which are each equipped with a spark gap. Each spark gap has a connection contact plate, to each of which one pole of the multipolar network can be connected. This device combination is completed by the fact that on the open side of the housing, a first contact plate made of electrically conductive material is applied, which in a suitable manner with the Insulating housing is connected. This contact plate is contacted on the one hand with the spark gaps with which they z. B. is in direct contact, on the other hand, this first contact plate has connection means for a corresponding electrical conductor, for example, the neutral conductor.

It is preferably provided that a first connection means discharging from a first connection contact plate for connection to a first current-carrying phase (L1), a second connection means discharging from a second connection contact plate for connection to a second current-carrying phase (L2), a third from a third connection contact plate laxative connection means for connection to a third current-carrying phase (L3) is determined and the connection means of the first contact plate are intended for connection to a neutral conductor.

In this way, a multipolar very compact unit of the multiple spark gap is provided.

In order to introduce still another function in this multiple spark gap while maintaining the compact design, it is provided that the first contact plate is approximately L-shaped, wherein the first leg covers the open side of the housing and the second leg has a side surface of the Covered insulating material, and that a further spark gap between the second leg and a parallel held second contact plate made of electrically conductive material contacted with two contact plates is arranged, wherein the second contact plate has a connection means for connecting a PE conductor.

According to this arrangement, the first contact plate is intended to be contacted on the one hand with the spark gaps, on the other hand, the second leg of the first contact plate is intended to receive a terminal end of another spark gap, wherein the other end of the spark gap is connected to a second contact plate. The two contact plates can be connected to one another by insulated screw connections or the like. The first contact plate is intended to be at neutral potential, so be connected to neutral, while the second contact plate is to be connected to a PE conductor, so that the total device combination not only forms a three-pin connection option for three phase conductors, but an additional connection option for the PE Ladder. Overall, thus a quadruple arrangement of spark gaps is integrated into the multiple spark gap, which further reduces the overall design and the overall construction volume compared to the conventional technique. This in particular by the fact that the Spark gap for the N-PE connection is not located next to the other spark gaps, but is built under, so that the overall length of the overall combination compared to the conventional connection and connection technology is reduced.

To improve the handling is also provided that the connection means for connection to the current-carrying phases (L1, L2, L3) projecting rectified to each other via the housing bottom from one side of the insulating material and the connection means of the first contact plate and, if a second contact plate is arranged, the connection means of the second contact plate rectified to each other and projecting in opposite directions to the connection means of the current-carrying phases via the housing mouth.

The connection means for the connection with the current-carrying phases can be equipped, for example with contact terminals or the like, so that corresponding conductors can be connected in a simple manner. Also, the connection means for the connection of the neutral conductor or the PE conductor may be formed by terminals, in which such conductors are insertable and contactable by means of the terminal and can be clamped. The arrangement on opposite sides of the overall combination is advantageous for the placement of the corresponding cables or conductors. In particular, it is preferably provided that each spark gap consists of stacked single spark gaps in the form of ring-shaped or disk-shaped electrode plates, between which respective annular insulating disks are arranged.

With regard to the further embodiment of such multiple spark gaps is on the DE 20 2013 102 647 directed. The advantageous embodiments described therein can also be used in the present invention.

In addition, it can also be provided that all or some electrode plates are contacted with electrical / electronic control elements for influencing the distribution of stress over the stack arrangement.

A particularly preferred embodiment is seen in that the Isolierstoffgehäuse for each stack of single spark gaps has a unilaterally open rectangular chamber which is bounded by side walls and a bottom wall, and that each chamber has in corner areas or near the corner regions over the height of the chamber formed support ribs on which the electrode plates and the insulating disks or only the insulating disks are supported.

By this arrangement and configuration, the following is achieved. If in the respective Chamber electrode plates and insulating discs are used with the same outer diameter, these can be supported on the preferably approximately diametrically opposed support ribs and center, so that a centric arrangement and a sufficiently secure position is guaranteed. This arrangement is especially preferred when the first contact plate with the insulating material is fastened in each case in the corner regions of the individual chambers by means of screws.

If, as the invention also envisages, another attachment is to be made, so also electrode plates and insulating discs can be used in the chambers in which the electrode plates lie behind with its outer circumference behind the outer periphery of the insulating material. In this case, a support of only the Isolierstoffscheiben takes place on the support ribs. Centering and support of the electrode plates can be realized in other ways.

In a possibly preferred embodiment, it is provided that the electrode plates terminate flush with the insulating material disks on the circumference.

In an alternative preferred embodiment it can be provided that the electrode plates are opposite to the Insulating disks are located on the circumference.

In particular, when the electrode plates terminate flush with the insulating material is preferably provided that the electrode plates have a peripheral edge formed with a chamfer and the insulating material having a maximum outside diameter of the electrode plates in the dimension matched outer diameter.

By this configuration, the creepage distance between the separated by the insulating material electrode plates is increased, so that a voltage flashover is counteracted in this area. This is achieved in the same way if the Isolierstoffscheiben protrude sufficiently against the electrode plates.

In particular, in this embodiment, it is preferably provided that from the bottom of the chamber a mandrel protrudes centrally aligned to the chamber, to which the provided with a suitable perforation electrode plates and the insulating material are threaded.

According to this constructive solution, the electrode plates provided with a central perforation are aligned and held on the mandrel centric to the chamber. The Isolierstoffscheiben are disposed between the electrode plates and are not centered and held by the mandrel, but by the support ribs located in the corner areas.

In this case, an attachment of the first contact plate to the housing can be effected in that a fastening screw is guided centrally through the mandrel or screwed into the mandrel. Such solutions are also in the DE 20 2013 102 647 specified. The solutions described there are useful here.

A preferred development is also seen in that in each chamber the ground immediately adjacent a terminal contact plate is arranged, which engages with a radially projecting arm an opening or a wall slot of a side wall of the chamber, the outside of the chamber has connection means for a conductor.

Here, it is preferably provided that the chamber bottom has a recess, is inserted in the terminal contact plate fitting.

A particularly preferred development is seen in that at least one of the support ribs in the amount of the inserted electrode plates has slots which open to the electrode plates and outwardly open and that in at least some Slots controls are used, which contact the respective electrode plate edge and connected via a connecting means to a neutral conductor leading component of the multiple spark gap.

This arrangement makes it possible to supply corresponding controls in a simple manner and to contact the electrode plates, wherein the control elements can each be held in a desired position via a common contact spring and correspondingly contacted with the first contact plate, so that they are switched to the corresponding potential.

Preferably, it is provided that the controls are resiliently held against the electrode plates on investment.

Furthermore, it is preferred that the complete assembly is surrounded by a multi-part housing made of insulating material, which has access openings for electrical connection lines and for actuating conductor terminals.

According to the invention, the complete structural unit is surrounded by a housing, preferably with a lower part and an upper part made of insulating material. For assembly, only this unit is to handle and appropriate place, for example, in a Integral modular housing. To the corresponding connection points can be supplied via the access openings in each case a corresponding conductor and by means of the conductor terminals, the applied conductors can be fixed.

Embodiments of the invention are illustrated in the drawings and described in more detail below.

Figur 1

eine erste Ausführungsform in Explosionsdarstellung;

Figur 2

eine Ausführungsform im Zusammenbau, teilweise aufgebrochen;

Figur 3

eine Einzelheit in Ansicht gesehen;

Figur 4

eine weitere Einzelheit in Ansicht Von schräg unten gesehen;

Figur 5

desgleichen in eine um 90° um die Hochachse gedrehten Lage;

Figur 6

eine Einzelheit in Draufsicht gesehen;

Figur 7

die Einzelheit VII der Figur 6 in vergrößerter Ansicht gezeigt;

Figur 8

eine weitere Einzelheit in Draufsicht gesehen;

Figur 9

die Einzelheit mit weiteren Teilen kombiniert in Ansicht;

Figur 10

desgleichen in Rückansicht;

Figur 11

eine Ausführungsform in Explosionsdarstellung;

Figur 12

die Ausführungsform in Explosionsansicht in anderer Blickrichtung gesehen;

Figur 13

eine Einzelheit von schräg unten gesehen;

Figur 14

die Einzelheit von oben gesehen;

Figur 15

eine weitere Einzelheit in Draufsicht gesehen;

Figur 16

eine Einzelheit in Teilansicht gesehen;

Figur 17

eine weitere Einzelheit in Teilansicht;

Figur 18

eine Einzelheit in Draufsicht gesehen.

It shows:

FIG. 1

a first embodiment in exploded view;

FIG. 2

an embodiment in the assembly, partially broken away;

FIG. 3

a detail seen in view;

FIG. 4

another detail in view Seen obliquely from below;

FIG. 5

likewise in a position rotated by 90 ° about the vertical axis;

FIG. 6

a detail seen in plan view;

FIG. 7

the detail VII of FIG. 6 shown in enlarged view;

FIG. 8

another detail in Seen from above;

FIG. 9

the detail with further parts combined in view;

FIG. 10

likewise in rear view;

FIG. 11

an embodiment in exploded view;

FIG. 12

the embodiment seen in an exploded view in another direction;

FIG. 13

a detail viewed from below;

FIG. 14

the detail seen from above;

FIG. 15

another detail seen in plan view;

FIG. 16

a detail seen in partial view;

FIG. 17

another detail in partial view;

FIG. 18

a detail seen in plan view.

In the embodiments, a multi-pole multiple spark gap for the lightning protection is shown in a single device is summarized. Essential components of this embodiment are the following.

It is an insulating 1 z. B. made of plastic, which has a plurality of mutually insulated chambers 2, 3, 4. These chambers 2, 3, 4 are, as in particular from FIG. 6 can be seen, designed so that they open to a housing side open. In these chambers 2, 3, 4 each of the housing bottom 5 adjacent to a terminal contact plate 6 is inserted, on which a contacted with this spark gap 7 is stacked, which is inserted into the respective chamber 2, 3, 4. Each terminal plate 6 has in each case via a bent arm connecting means 8 for each electrical conductor, wherein in the assembly target position, the connecting means 8 are discharged through the housing wall of the insulating housing 1 to the outside, such as in FIGS. 4 and 5 is apparent.

The open side of the housing insulating housing 1 is connected by a first contact plate 9 made of electrically conductive material z. B. covered from metal. This first contact plate 9 is contacted in assembly target position with the spark gaps 7 inserted into the insulating 1 on its side facing away from the housing bottom 5 and the terminal contact plates 6, so applied to this. Furthermore, the first contact plate 9 in the assembly target position with the insulating material. 1 connected by connecting means, such as screws. The first contact plate 9 also has connection means 13 for at least one electrical conductor.

A first connection means 8 discharging from a first connection contact plate 6 serves for connection to a first current-carrying phase, for example L1.

A second connection means 8 discharging from a second connection contact plate 6 serves for connection to a second current-carrying phase, for example L2.

A third connection means 8 discharging from the third connection contact plate 6 serves for connection to a third current-carrying phase, for example L3. The connection means 13 of the first contact plate 9 serve for connection to a neutral conductor.

As can be clearly seen from the figures, the first contact plate 9 is formed as an L-shaped part, wherein the first leg covers the open side of the insulating housing 1 and the second leg covers a side surface of the insulating housing 1 and rests against this. A further spark gap 10 is arranged between the second leg of the first contact plate 9 and a second contact plate 11, held in parallel thereto, made of electrically conductive material, wherein the spark gap 10 is contacted with both contact plates. Furthermore, the second contact plate 11 with a Connection means 12 equipped, to which a PE conductor is to be connected. Due to the arrangement of the other spark gap 10, the total combination is not increased in their overall length or width, but only in the overall height.

As in particular from FIGS. 4 and 5 can be seen, the connection means 8 for connection to the current-carrying phases L1, L2, L3, aligned rectified to each other and protrude beyond the housing bottom 5 of the insulating material 1 to the outside. The connection means 13 of the first contact plate 9 and the connection means 12 of the second contact plate 11 are in turn rectified to each other and arranged opposite to the connection means 8 for the current-carrying phases. The connection means 12, 13 protrude beyond the housing mouth and in particular over the second leg of the first contact plate 9 to the outside.

In this way, easily accessible connection options for connecting the electrical conductors are provided.

In the illustrated embodiments, each spark gap 7 and 10 is formed from stacked arranged single spark gaps in the form of annular or disc-shaped electrode plates, as for example in FIG. 3 and FIG. 16 is illustrated. Between Electrode plates 14 are each annular insulating material 15 z. B. arranged from PTFE. Furthermore, at least the electrode plates 14 of the spark gap 7 are contacted with electronic control elements 16, which serve for influencing the stress distribution over the respective stack arrangement.

Like, for example FIG. 16 it can be seen, the insulating housing 1 for each stack of single spark gaps 7 on a one-sided open rectangular chamber 2, 3, 4, which is bounded in each case by side walls and a bottom wall. Each of these chambers 2, 3, 4 has in the corner regions and near the corner regions over the height of the chamber formed support ribs 17, 18, in which the electrode plates 14 in the arrangement, as shown in FIG FIG. 16 is shown, and support the insulating discs 15. In the arrangement, as in FIG. 3 is shown, only the insulating material 15 are based on the support ribs 17, 18 on the outer circumference side.

In the embodiment, such as in FIG. 16 is shown, close the electrode plates 14 on the outer circumference flush with the insulating material 15 from. In order to counteract a voltage flashover between the electrode plates 14, the electrode plates 14 are formed with a chamfer 19. As in FIG. 16 As can be seen, each electrode plate 14 has a narrow cylindrical outer peripheral region, to which the tapered bevel 19 connects.

The insulating discs 15 have the same outer diameter as the cylindrical portions of the electrode plates 14.

In the embodiment, as in FIG. 3 is shown, a voltage flashover is counteracted by the fact that the insulating material 15 protrude radially over the electrode plates 14.

In the arrangement, as in FIG. 3 is shown, the respective chamber 2, 3, 4 of the insulating material housing 1 is formed with a central mandrel 20, on each of which provided with a matching hole 21 electrode plates 14 are fittingly plugged. The insulating material 15 are formed only as narrow rings, which are arranged only in the edge region between the electrode plates 14 and in this embodiment, as in FIG. 3 is shown, the outer circumference of the support ribs 17, 18 are supported, so that so that the whole stack is held in the correct position oriented. For final fixation, after the arrangement of the corresponding stacks in the chambers 2, 3, 4, the connection contact plate 9 can be placed and fixed by means of screws, wherein the screws can be guided, for example, through the mandrel 20. In the embodiment, for example, in FIG. 15 is clarified, is a corresponding Stack arrangement of electrode plates 14 and insulating washers 15 analogous to the representation in FIG. 16 inserted into the corresponding chambers 2, 3, 4. Subsequently, the first contact plate 9 can be placed and fixed by means of screws, which are guided by perforations in the corner region of the insulating material and in the corner regions between the chambers 2, 3, 4.

In the embodiment shown in the drawings, in each chamber 2, 3, 4 the bottom 5 immediately adjacent a terminal contact plate 6 is arranged, which with a radially projecting, cranked arm an opening or a wall slot 22 of a side wall of the respective chamber. 2 , 3, 4 passes through, which on the outside from the chamber has excellent connection means 8 for the corresponding contacts or conductors. In addition, the chamber bottom 5 has a depression or recess 23 into which the respective terminal contact plate 6 can be inserted in a suitable manner.

At least one of the support ribs 18, preferably, as shown in the exemplary embodiment, both support ribs 18 have mutually offset in the amount of the respectively inserted electrode plates 14 slots 24 which, as in particular FIG. 17 is illustrated open to the outside of the respective chamber 2, 3, 4 open. In these slots 14, the controls 16 of used outside so that they contact the respective electrode plate 14. Via a connecting conductor 25, which is also led to the outside, they are integrally formed with a central conductor 25 ', which is secured to the insulating housing 1 by means of a screw and contacted with an end portion with the first contact plate 9, so that it to a neutral potential leading component is connected. The controls 16 are resiliently held against the peripheral edge of the electrode plates 14 on investment.

As in particular in FIG. 1 it can be seen, the complete assembly of a two-part housing 26, 27 is surrounded, which consists of insulating material and which has access openings for the electrical connection lines and the operation of provided conductor terminals 28. As a result, the entire unit is shielded arranged in the housing, provided that it is mounted around the unit. The housing can be placed and mounted in a conventional manner on a rail in an installation cabinet or the like.

The conductor terminals 28, for example, in FIG. 1 can be completed in a suitable manner with the connection means 8, or 12 or 13, wherein each of the conductor terminals 28 has a clamping region for clamping a corresponding connection conductor and set screws for actuating the respective terminal, which are accessible in the final assembly position through corresponding housing openings of the housing 27.

In FIG. 1 is a corresponding exploded view of the items of the overall device shown. In FIG. 2 the device is shown in the assembly, wherein the housing 27 is partially broken, so that the inner components are partially visible. In FIG. 3 an embodiment of a stacked arrangement of a spark gap with electrode plates 14 and insulating washers 15 is shown. In FIG. 4 is shown a partial assembly of the items, which is particularly clear that, as well FIG. 5 shows, the further spark gap 10 is mounted spatially under the insulating material on the one leg of the first contact plate 9.

In FIG. 6 is an embodiment of an insulating housing in an oblique view from above. The FIG. 7 shows a detail of FIG. 6 , partially broken. In FIG. 15 a variant of an insulating housing is shown. The associated stack arrangement of electrode plates 14 and insulating washers 15 is in FIG. 16 shown as a detail enlargement.

In FIG. 8 is an insulating housing 1 with an inserted stack of insulating 15 and electrode plates 14th shown. The other two places are not yet filled. In FIG. 9 the arrangement provided with the first contact plate 9 is shown with insulating housing 1, wherein only the end face with the first contact plate 9 can be seen. In FIG. 10 is the one leg of the first contact plate 9 can be seen and seen the insulating material 1 from below.

In FIG. 11 an exploded view of another embodiment is shown, similar to FIG. 1 , in which FIG. 12 show more details in another view.

FIGS. 13 and 14 show a partial assembly of the insulating material 1 with the first contact plate 9 and other elements in different directions. FIG. 15 shows this embodiment of the insulating material 1 with inserted into a chamber 2 stack of electrode plates 14 and insulating discs 15, wherein a detail of this embodiment in FIG. 16 is shown. FIGS. 17 and 18 finally shows as a detail the contacting of the control elements 16 with the electrode plates 14 in the installed position.

The exemplary embodiments show a multi-pole spark gap according to the invention with three lightning current dissipation elements for the three phases L1, L2, L3 and a PE-N arrester, in each case including the neutral conductor connection. By combining these elements in a single device are achieved, a compact overall design is achieved, which has little space and is extremely easy to handle in terms of installation.

The invention is not limited to the embodiments, but in the context of the disclosure often variable.

All disclosed in the description and / or drawing single and combination features are considered essential to the invention.

LIST OF REFERENCE NUMBERS

1

Insulated

2

chamber

3

chamber

4

chamber

5

ground

6

Connection contact plate

7

radio link

8th

connection means

9

first contact plate

10

further spark gap

11

second contact plate

12

Connection means at 11

13

Connection means at 9

14

electrode plates

15

Isolierstoffscheiben

16

controls

17

support ribs

18

support ribs

19

chamfer

20

mandrel

21

perforation

22

slot

23

recess

24

slots

25

connecting conductors

25 '

center conductor

26

casing

27

casing

28

Head brace

Claims (16)

Multiple spark gap for lightning protection, consisting of between terminal contact plates and contact plates with connection means for electrical conductors arranged spark gaps, characterized in that an insulating material (1) is arranged, which has a plurality of mutually insulated chambers (2, 3, 4), which towards a housing side open out and in which in each case the housing bottom (5) adjacent to a terminal contact plate (6) and thereon a contacted with this spark gap (7) is inserted, of the terminal contact plates (6) respectively connecting means (8) for each electrical conductor through the housing to Outside of the insulating material (1) are discharged,
in that the open housing side is covered by a first contact plate (9) of electrically conductive material, which is contacted with the spark gaps (7) on its side remote from the housing bottom (5) and the terminal contact plates (6) and with the insulating material housing (1) Connecting means is connected, wherein the first contact plate (9) has connection means (13) for electrical conductors. Multiple spark gap according to claim 1, characterized in that a first connection means (8) discharging from a first connection contact plate (6) for connection to a first current-carrying phase (L1), a second connection means (8) discharging from a second connection contact plate (6) with a second current-carrying phase (L2), a third of a third terminal contact plate (6) discharging terminal means (8) for connection to a third current-carrying phase (L3) is determined and the connection means (13) of the first contact plate (9) for connection with a zero conductor are determined. Multiple spark gap according to claim 1 or 2, characterized in that the first contact plate (9) is approximately L-shaped, wherein the first leg covers the open side of the housing and the second leg covers a side surface of the insulating housing (1), and that a further spark gap (10) between the second leg and a parallel held second insulated contact plate (11) made of electrically conductive material contacted with two plates, wherein the second contact plate (11) has a connection means (12) for connecting a PE conductor. Multiple spark gap according to claim 2 or 3, characterized in that the connection means (8) for connection to the current-carrying phases (L1, L2, L3) projecting rectified to each other via the housing bottom from one side of the insulating housing (1) and the connection means (13) of first contact plate (9) and, if a second contact plate (11) is arranged, the connecting means (12) of the second contact plate (11) rectified to each other and projecting in opposite directions to the connection means (8) of the current-carrying phases on the housing mouth. Multiple spark gap according to one of Claims 1 to 4, characterized in that each spark gap (7, 10) consists of stacked individual spark gaps in the form of ring-shaped or disk-shaped electrode plates (14) between which respective annular insulating disks (15) are arranged. Multiple spark gap according to claim 5, characterized in that all or some electrode plates (14) are contacted with electrical / electronic control elements (16) for influencing the stress distribution over the stack arrangement. Multiple spark gap according to claim 5 or 6, characterized in that the insulating housing (1) for each stack of single spark gaps has a unilaterally open rectangular chamber (2, 3, 4) which is bounded by side walls and a bottom wall, and in that each chamber ( 2, 3, 4) in corner areas or near the corner regions over the height of the chamber formed support ribs (17,18), on which the electrode plates (14) and the insulating material (15) or only the insulating material (15) are supported. Multiple spark gap according to one of claims 5 to 7, characterized in that the electrode plates (14) terminate flush with the insulating material discs (15) on the circumferential side. Multiple spark gap according to one of claims 5 to 7, characterized in that the electrode plates (14) are located circumferentially with respect to the insulating material discs (15). Multiple spark gap according to one of Claims 5 to 9, characterized in that the electrode plates (14) have a peripheral edge formed with a chamfer (19) and the insulating washers (15) have an outer diameter adapted to the maximum outer diameter of the electrode plates (14) , Multiple spark gap according to one of claims 5 to 10, characterized in that from the chamber bottom (5) a mandrel (20) centrally aligned with the chamber (2, 3, 4) protrudes, on which provided with a matching perforation electrode plates (14) and the Isolierstoffscheiben (15) are threaded. Multiple spark gap according to one of claims 5 to 11, characterized in that in each chamber (2, 3, 4) of the bottom (5) immediately adjacent to a terminal contact plate (6) is arranged, which with a radially projecting arm an opening or a wall slot ( 22) of a side wall of the chamber (2, 3, 4), which externally of the chamber (2, 3, 4) has connection means (8) for a conductor. Multiple spark gap according to claim 12, characterized in that the chamber bottom (5) has a recess (23), in the terminal contact plate (6) is inserted appropriately. Multiple spark gap according to one of claims 7 to 13, characterized in that at least one of the support ribs (17, 18) at the level of the inserted electrode plates (14) has slots (24) which open to the electrode plates (14) and to the outside open out and that in at least some slots (24) control elements (16) are used, which contact the respective electrode plate (14) at the edge and connected via a connecting means to a neutral conductor leading component of the multiple spark gap. Multiple spark gap according to one claim 14, characterized in that the control elements (16) are held resiliently against the electrode plates (14) on abutment. Multiple spark gap according to one of claims 1 to 15, characterized in that the complete assembly is surrounded by a multi-part housing (26, 27) made of insulating material, which has access openings for electrical connection lines and for actuating conductor terminals (28).

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