CN111864710B

CN111864710B - Overvoltage protector

Info

Publication number: CN111864710B
Application number: CN202010331365.8A
Authority: CN
Inventors: M.迪泰特; D.西门子; C.桑德
Original assignee: Phoenix Contact GmbH and Co KG
Current assignee: Phoenix Contact GmbH and Co KG
Priority date: 2019-04-24
Filing date: 2020-04-24
Publication date: 2022-07-08
Anticipated expiration: 2040-04-24
Also published as: DE102019110618A1; CN111864710A

Abstract

The invention relates to an overvoltage protection device (1) having a measuring module (2) and having at least one overvoltage protection module (3), wherein the measuring module (2) and the overvoltage protection module (3) each have a housing (4,5), and wherein the overvoltage protection module (3) has at least one connection point (6) for connecting at least one electrical line (7). The object of providing an overvoltage protection device (1) which ensures simpler operation is achieved in that the overvoltage protection device (1) has a plug-in module (8) with a base module (9) and with at least one monitoring module (10), the base module (9) can be connected from the outside to the housing (4) of the measuring module (2) and the monitoring module (10) can be connected from the outside to the housing (5) of the overvoltage protection module (3), and the at least one monitoring module (10) is used for monitoring the overvoltage protection module (3) and is arranged in the region of the at least one connection point (6).

Description

Overvoltage protector

Technical Field

The invention relates to an overvoltage protection device having a measuring module and having at least one overvoltage protection module, wherein the measuring module and the overvoltage protection module have a housing, and wherein the overvoltage protection module has at least one connection point for connecting at least one electrical line.

Background

Overvoltage protection devices are known in the prior art in a large number of embodiments and are used to protect electrical devices or lines from overvoltages. Overvoltages can be caused, for example, by lightning strikes or defects in technical installations. In this case, the overvoltage protection device is disposed upstream of the electrical device to be protected or the line to be protected.

The actual overvoltage protection is implemented in at least one overvoltage protection module of the overvoltage protection device. The overvoltage protection module therefore also has at least one interface for electrical lines. The overvoltage protection module is connected to a measuring module, in which, for example, a communication unit for communication with a monitoring unit or a control console is arranged.

In order to ensure reliable functionality of the overvoltage protection device and to detect which kind of load the overvoltage protection device is subjected to, it is known from the prior art to monitor the connection point of the electrical lines of the overvoltage protection module for connecting the overvoltage protection device by means of an inductive sensor. The inductive sensor is integrated fixedly in a housing of the overvoltage protection module. The fixed integration has the advantage that the position of the sensor relative to the conductor of the pilot circuit can be known relatively well, thereby simplifying the evaluation of the current measured by the sensor. However, it is disadvantageous in the case of known overvoltage protection devices that such sensors cannot be easily replaced in the event of a sensor failure, since the removal is associated with considerable effort.

Disclosure of Invention

The invention is therefore based on the object of providing an overvoltage protection device which ensures simpler operation.

This object is achieved according to the invention by the features of patent claim 1 in that the overvoltage protection device has a plug-in module with a base module and with at least one monitoring module. The plug-in module can be connected from the outside to the housings of the measuring module and the monitoring module. At least one monitoring module is used for monitoring the overvoltage protection module and is arranged in the region of the at least one connection point.

The measurement module and the overvoltage protection module can have a common housing. In a preferred embodiment, both the measuring module and the overvoltage protection module have their own housing. In this embodiment, the base module can then be connected to the housing of the measuring module from the outside and the monitoring module can be connected to the housing of the overvoltage protection module from the outside.

The monitoring of the overvoltage protection device can be realized in a simple manner by the configuration according to the invention. It has proven to be advantageous if, by means of the embodiment according to the invention, on the one hand, an easy exchange of an existing monitoring module can be achieved. On the other hand, the solution according to the invention results in the possibility of simple retrofitting. The overvoltage protection device can be retrofitted with plug-in modules without any effort. For this purpose, it is only necessary that the housings or the common housing of the measuring module and the overvoltage module are designed such that the base module or the monitoring module can be fastened thereto.

The monitoring may be implemented in different forms and manners. A distinction can be made between monitoring of influences acting on the overvoltage protection device from the outside, for example monitoring of the current flowing into the overvoltage protection device, and monitoring of the state of the overvoltage protection device.

In a preferred embodiment of the overvoltage protection device according to the invention, provision is made for the monitoring module to have a sensor for monitoring external influences. The sensor is arranged in the region of the coupling point. Preferably, the sensor is configured as a current sensor and is used for measuring a current through an electrical conductor coupled at the coupling point. In one variant, it is provided that the current sensor determines the actual value for the current flowing through the electrical line. In an alternative embodiment, the current sensor is designed as a current pulse meter. Particularly preferably, the sensor is designed such that it measures or meters current pulses.

In one variant, the monitoring module has a plurality of sensors.

The arrangement of the sensors in the monitoring module can be implemented in different forms. In the first place, the overvoltage protection device according to the invention is, however, embodied in particular in such a way that the monitoring module has at least one recess for an electrical line connected at the connection point. The recess is thus used for accommodating or passing through the line, so that the connection of the line to the connection point is not impeded by the monitoring module. In one variant, the recess is formed in the form of a hole. The monitoring module then has a hole through which an electrical line can be introduced into the connection point. Preferably, the hole-shaped recess has a circular cross section, since most electrical lines likewise have a circular cross section.

In a further variant, the recess is open toward one side. Preferably, it is configured in a semicircular manner, wherein the recess is bounded only along the circular side by the monitoring module and not on its linear side. The electrical line can then be brought into the recess via the open side in a simple manner. This embodiment of the recess has the advantage that the electrical line does not have to be plugged through the recess in order to be able to connect it. In particular, the monitoring module with the recess open to one side can then also be installed on the overvoltage protection module when the electrical lines have been connected to the connection point, without these electrical lines having to be removed. In the case of this variant, the retrofitting of the already installed overvoltage protection device is therefore particularly simple.

If the monitoring module has a sensor, the sensor is arranged in different positions with respect to the recess in different embodiments of the invention. In order to ensure reliable functionality of the sensor, the sensor is however arranged at least in the immediate vicinity of the recess. The sensor is thus likewise situated in the immediate vicinity of the electrical line which is guided through the recess and is guided therein.

If the recess is configured as a hole-shaped recess, a sensor which is configured in a circular manner and is arranged around the hole-shaped recess is suitable in a particular form and manner. Preferably, such a sensor is realized by a coil, in particular a rogowski coil.

For a better understanding, the orientation of the monitoring module in space is then defined, so that the arrangement of the sensors in the monitoring module can be better described. The monitoring modules have a top side, a bottom side, a right side and a left side, wherein adjacent monitoring modules can be arranged on the left and right side with respect to each other.

The monitoring module has a recess which is open toward the bottom side of the monitoring module. The sensor is then arranged in one embodiment on the right or left side of the recess on the right or left side of the monitoring module. This embodiment is particularly suitable when only one monitoring module is present. In the case of adjacently arranged monitoring modules, it can occur in the case of this embodiment that the sensors arranged on the side of the recess are influenced by the electrical lines connected in the adjacent overvoltage protection module, which leads to a distortion of the actually interesting measured values (i.e. Verf ä lschung). In order to avoid this effect, in one embodiment the sensor is arranged above the recess, i.e. at the top side of the monitoring module. In a further embodiment, two sensors are provided, wherein the first sensor is arranged on the right side of the recess and the second sensor is arranged on the left side of the recess. The two sensors are preferably connected in series. This makes it possible to compensate for the influence of different conductor cross sections.

The described orientation of the sensor and also of the recess is not restrictive, but is understood by way of example only. Additional possible orientations and arrangements are also encompassed by the present invention.

In order to be able to monitor the state of the overvoltage protection device, it is provided in a preferred embodiment that the overvoltage protection module has a remote notification contact (or remote communication contact, i.e. Fernmeldekontakt). When an overload of the overvoltage protection device occurs, the remote notification contact is configured, for example, as a switch and opens or closes an electrical circuit. The user can thus be remotely informed of overload when the switch is connected to the corresponding remote notification line. Preferably, the overvoltage protection device is then further characterized in that the monitoring module has an interrogation unit for interrogating (or requesting, i.e. abbragung) the remote notification contacts. The interrogation unit is preferably inductively, capacitively, optically, galvanically or mechanically connected to the remote notification contact.

Some overvoltage protectors are constructed with a plurality of overvoltage protection modules in order to ensure a plurality of overvoltage protection circuits. The number of overvoltage protection modules depends on the respective use, in particular the network to be protected or the device to be protected. A preferred embodiment of the overvoltage protection device according to the invention is therefore designed in such a way that the overvoltage protection device has at least one further (second) overvoltage protection module. The plug-in module can nevertheless have only one monitoring module, which is used in particular for monitoring two overvoltage protection modules. In a preferred embodiment, the plug-in module however has at least one further (second) monitoring module. The monitoring module is associated with the overvoltage protection module. In this case, a monitoring module is associated with each overvoltage protection module in accordance with the number of the individual modules. In a further embodiment, a common monitoring module is associated with a plurality of overvoltage protection modules, in particular two overvoltage protection modules.

If at least two monitoring modules are provided, the further monitoring module can then be configured like the first monitoring module, and can then in particular also have one and the same sensor or, for example, also an interrogation unit for interrogating remote notification contacts, as long as the further overvoltage protection module has remote notification contacts. In an alternative embodiment, the further monitoring module is of a different configuration than the first monitoring module. For example, a first monitoring module can have a sensor and an interrogation unit for interrogating remote notification contacts, whereas a second monitoring module has only a sensor.

A preferred embodiment of the overvoltage protection device is designed in such a way that the plug-in module is formed in one piece. When one piece is mentioned here, this means that the plug-in module has at least one base module and one monitoring module, but may also have at least one further monitoring module, and the base module and the monitoring module or the monitoring modules have a common housing. Preferably, a number of recesses for electrical lines corresponding to the number of monitoring modules is then formed in the housing.

When the overvoltage protection device is constructed in a modular manner, a significantly more flexible solution then exists. The measuring module and the at least one overvoltage protection module of the overvoltage protection device can then be releasably connected to one another. If the overvoltage protection device has at least one further overvoltage protection module, the at least one further overvoltage protection module is also releasably connected to the first overvoltage protection module. This embodiment of the overvoltage protection device has the advantage that the number of required overvoltage protection modules can be temporarily and easily changed and can be adapted to the respective use case. Individual damaged overvoltage protection modules can also be easily replaced without having to renew the entire overvoltage protector.

The overvoltage protection device according to the invention is then preferably characterized in that the plug-in module is constructed in multiple parts. When referring to a plurality of parts, it is then meant that the base module and the at least one monitoring module can be constructed as separate components which can be connected to one another. It is therefore possible for the plug-in module to also be adapted to the event (Begebenheit) and the necessity of a corresponding use of the overvoltage protection device. A further advantage of such a plug-in module of multi-part design is based on the fact that the individual monitoring modules can be exchanged. The user can thus decide temporarily whether he wants to use a monitoring module with, for example, a current pulse counter and/or a current sensor and/or a query unit for remote notification of the contacts.

The plug-in module with the base module and the plurality of monitoring modules may however also be designed in multiple parts in such a way that the base module and the first monitoring module are fixedly connected to one another, in particular arranged in a common housing, and the further monitoring module is designed as a separate component from the latter. The further monitoring modules can then be connected to the first monitoring module and to one another, so that the plug-in module can be combined with the base module and the plurality of monitoring modules, wherein the first monitoring module is fixedly connected to the base module and the second monitoring module can be connected, in particular releasably connected, to the first monitoring module. The third monitoring module may then be connected to the second monitoring module and so on.

The use of a multi-part plug-in module is not restricted, but can be combined with a modular overvoltage protection device. Instead, a multi-part plug-in module can also be used in the case of non-modular overvoltage protection devices.

If the overvoltage protection device has at least two overvoltage protection modules and, in operation, at least two electrical lines are connected to overvoltage protection modules adjacent to one another, they can produce a mutual influence of the electrical lines or of the currents flowing through the lines. In order to minimize the mutual influence of the electrical lines and to extend the air and creepage distance (or air gap and creepage distance, i.e. Luft-und kriechslecke) between two adjacent connection points, it is provided in one embodiment that at least one monitoring module has at least one air and creepage extension for extending the air and creepage distance between two adjacent electrical lines. The air and creepage distance extension is realized, for example, in that the side wall of the recess between two adjacent connection points is extended in the case of a monitoring module.

In one embodiment, the overvoltage protection device is characterized in that the base module and the monitoring module are connectable to each other or are connected to each other galvanically, capacitively, inductively or optically for the purpose of transmitting signals from the monitoring module to the base module. If the overvoltage protection device has more than one monitoring module, the base module and the monitoring modules of the plug-in module can be galvanically, capacitively, inductively or optically connected to one another or galvanically, capacitively, inductively or optically connected to one another.

In a particularly preferred variant of the overvoltage protection device, the at least one monitoring module is connectable or connected to the housing of the at least one overvoltage protection module in a height-adjustable manner. When referring to the height, this then means the distance between the center point of the line connected in the connection point and the monitoring module. If the overvoltage protection device has more than one overvoltage protection module and more than one monitoring module, preferably all monitoring modules are height-adjustably connectable or connected to the respective housing of the overvoltage protection module. This variant provides not only for plug-in modules of one-piece design, but also for plug-in modules of multi-piece design. In the case of a plug-in module of multi-part design, the further advantage results that the height of each individual monitoring module can be adjusted independently of the height of the other monitoring modules.

The height adjustability of the monitoring module yields the advantage that the sensitivity of the monitoring module can be varied. The sensitivity of the monitoring module depends on the distance between the intermediate point of the electrical line connected to the connection point and the monitoring module or the sensor arranged in the monitoring module. This embodiment is preferred in particular when the current sensor is arranged in the monitoring module. The above-mentioned spacing between the intermediate point or intermediate line of the electrical line and the sensor is important for the coupling factor between the electrical line and the sensor. In the case of this embodiment according to the invention, the height can be varied accordingly depending on whether a higher or a lower current flows through the electrical line, that is to say depending on how much sensitivity is desired.

Since the position of the connected electrical line through the connection point is fixed and fixed, the distance is determined by the height of the monitoring module relative to the electrical line. In particular, the monitoring module is latched to the housing of the overvoltage protection module in different latching steps, wherein each latching step corresponds to a defined height. In this embodiment, it is advantageous if the height of the latching step can be adapted to the standardized line cross section, so that the distance between the line center point and the monitoring module can be set repeatedly in a simple manner.

In addition to the overvoltage protection device, the invention also relates to a plug-in module for an overvoltage protection device having a measuring module and at least one overvoltage protection module, wherein the measuring module and the overvoltage protection module each have a housing and the overvoltage protection module has at least one connection point for connecting at least one electrical line. The plug-in module according to the invention has a base module and at least one monitoring module. The base module can be connected to the housing of the measuring module from the outside and the monitoring module can be connected to the housing of the overvoltage protection module from the outside. Furthermore, the monitoring module is designed to monitor the overvoltage protection module.

All the features and embodiments of the plug-in module specified in connection with the overvoltage protection device according to the invention apply accordingly with their advantages.

Drawings

In particular, there are numerous possibilities for improving and designing the overvoltage protection device according to the invention and the plug-in module according to the invention. For this purpose reference is made to the patent claims dependent on the independent patent claims and to the description of the preferred embodiments in conjunction with the accompanying drawings. In the drawings, wherein:

figure 1 shows an overvoltage protection device with a first variant of a plug-in module,

figure 2 shows a schematic representation of different designs of a monitoring module,

figures 3a-3d show different designs of the monitoring module,

figure 4 shows a different design of a plug-in module of one-piece construction,

figure 5 shows a different design of a plug-in module of multi-part construction,

fig. 6a,6b show two variants of an overvoltage protection module with height-adjustable monitoring modules,

fig. 7a,7b show an overvoltage protection device with a second variant of a plug-in module,

FIG. 8 shows a monitoring module according to FIG. 7, an

Fig. 9 shows an overvoltage protection device according to a further embodiment.

Detailed Description

Fig. 1 shows an overvoltage protection device 1 with a measuring module 2 and four overvoltage protection modules 3. The measuring module 2 has a housing 4. The overvoltage protection module 3 also has a corresponding housing 5. The overvoltage protection device 1 shown is constructed in a modular manner, and the measuring module 2 and the overvoltage protection module 3 are thus releasably connected to one another. The modular construction has the advantage that the number of overvoltage protection modules 3 used can be varied in a simple manner. In the case of the exemplary embodiment shown, the overvoltage protection module 3 is also constructed in a modular manner, i.e., it is formed from a lower part and an upper part which can be plugged onto the lower part. Each overvoltage protection module 3 has at least one connection point 6 for connecting an electrical line 7. For the sake of overview, reference numerals relating to the overvoltage protection modules 3 are assigned to only one overvoltage protection module 3.

Furthermore, the overvoltage protection device 1 has a plug-in module 8, which is formed in the present case from a base module 9 and four monitoring modules 10. The plug-in module 8 is constructed in multiple parts, which means that the base module 9 and the monitoring module 10 are separate components which are connected to one another. The base module 9 is connected to the housing 4 of the measuring module 2, whereas each monitoring module 10 is correspondingly connected to the housing 5 of the overvoltage protection module 3. The monitoring module 10 serves to monitor the overvoltage protection module 3 or its state and is arranged for this purpose in the region of the connection point 6. The base module 9 and the monitoring module 10 are connected to one another in a corresponding manner.

Fig. 2a,2b and 2c show in schematic form in each case one overvoltage protection module 3 with a monitoring module 10. The monitoring module 10 has different monitoring functions: the monitoring module 10 shown in fig. 2b has two sensors 11, which are designed as current sensors and measure the current flowing into the overvoltage protection module 3 or through the connected line 7. In order to bring the sensor 11 into close proximity to the electrical line 7, which is connected to the overvoltage protection module 3 via the connection point 6, the monitoring module 10 has a recess 12, in which the line 7 is guided. The sensors 11 are arranged next to the cutouts 12, in the example shown to the right and to the left of the cutouts 12, whereby the next to the electrical lines 7 is also ensured.

The overvoltage protection module 3 shown in fig. 2a and 2c has remote notification contacts, which are not shown. For monitoring the remote notification contacts, the monitoring module 10 of fig. 2a and 2c has an interrogation unit 13. In particular, it is queried whether a remote notification contact is actuated. The monitoring module 10 shown in fig. 2c has not only two sensors for monitoring the current flowing through the line 7 but also an interrogation unit 13 for interrogating remote notification contacts and thus connects (or combines, i.e. verbindet) the status monitoring of the overvoltage protection module 3 with the monitoring of the current flowing through the overvoltage protection module 3.

In the example shown, the monitoring module 10 is connected to the overvoltage protection module 3 via a dovetail connection 16. The invention is not limited to this form of connection, however, and all suitable forms of connection of two members may be used. In an advantageous manner, however, the connection is selected such that it can be established without tools.

Fig. 3a,3b,3c and 3d show different embodiments of the monitoring module 10 with differently constructed and arranged sensors 11.

Fig. 3a and 3b respectively show a monitoring module 10 with a semicircular recess 12 which is open at the bottom. The semicircular, open-sided design of the recess 12 allows the monitoring module 10 to be connected to the overvoltage protection module 3 only afterwards, i.e., when the electrical line 7 has been connected to the overvoltage protection module 3 via the connection point 6. The conductor 7 then does not have to be released again first. Due to the recess 12, the monitoring module has two side walls 14. The monitoring module 10 according to fig. 3a has a current sensor 11, which is arranged above a semicircular cutout 12. This arrangement is advantageous in particular when a plurality of overvoltage protection modules 3 with monitoring modules 10 are arranged next to one another in the overvoltage protection device 1. The sensor 11 is then not affected by the current passing through the adjacent conductor 7.

The monitoring module 10 shown in fig. 3b differs from the monitoring module 10 shown in fig. 3a in that the side walls 14 are of a substantially longer construction. This forms air and creepage extensions 15 between adjacent monitoring modules, so that the influence of adjacent lines 7 can be further reduced. Furthermore, the monitoring module 10 does not have only one sensor 11 but two sensors 11. The sensors 11 are arranged on both sides of the recess 12 and extend into the side wall 14. Further, the sensors 11 are electrically connected in series. By arranging two sensors 11 on opposite sides of the recess 12 and connecting the sensors 11 in series, different line cross sections can be compensated, so that it is immaterial whether the line 7 is positioned exactly or not in the middle between the sensors 11.

Another monitoring module 10 is shown in fig. 3 c. Here, the blank 12 is not open downward, but is open laterally. Such a monitoring module 10 is preferably connected to the overvoltage protection module 3, which does not have an adjacent monitoring module 10 with respect to the side of the opening of the recess 12. Two sensors 11 are again arranged on both sides of the recess 12 and extend into the side wall 14. The side wall 14 is again of longer construction than in the case of the monitoring module shown in fig. 3b, whereby the air and creepage distances are enlarged again.

Fig. 3d shows the monitoring module 10 with the sensor 11 configured as a coil. The sensor 11 is arranged around a recess 12 in the form of a bore, wherein the recess 12 has a circular cross section. In order to connect the line 7 to the connection point 6 of the overvoltage protection module 3, the line must be guided through the recess 12.

Fig. 4 shows three embodiments of a plug-in module 8, wherein the plug-in module 8 accordingly has a base module 9 and a different number of monitoring modules 10. The plug-in modules 8 are each formed in one piece, which means that the base module 9 and the respectively present monitoring module 10 together have only one housing.

Fig. 5, in contrast, shows a plug-in module 8 of multi-part design. The base module 9 and one monitoring module 10 are arranged in a common housing, while each further monitoring module 10 has its own individual component. This makes it possible to easily attach or supplement the plug-in module 8 with further monitoring modules 10. The additional monitoring module 10 is shown in an unconnected state. This is advantageous in particular for storage both at the customer and at the manufacturer, since only the base module, which is formed from the base module 9 and the monitoring module 10, and the respective monitoring module 10 as an extension are present.

Fig. 6a and 6b respectively show the overvoltage protection module 3 with a monitoring module 10 which has a sensor 11 above a semicircular recess 12. The connection points 6 of the overvoltage protection module 3 are shown in a well-visible manner, wherein it is not important at this time how accurately the connection points 6 are formed. At the connection point 6, an electrical line 7 is correspondingly connected. The wire cross section of the wire 7 according to fig. 6a is smaller than the wire cross section of the wire 7 according to fig. 6 b. In the illustrated embodiment, the monitoring module 10 is connected to the housing 5 of the overvoltage protection module 3 in a height-adjustable manner, so that the distance a between the center of the line 7 and the sensor 11 can be adjusted. In the two examples shown, the spacing a is the same despite the different wire cross-sections. Because of the middle point of the conductor 7 according to fig. 6a (i.e. at the height h)_M1At) compared to the middle point (at height h) of the wire 7 according to fig. 6b_M2At) is higher, so the monitoring module 10 in fig. 6a is also higher than atThe monitoring module 10 in fig. 6b is arranged higher up at the housing 5. The height is made clear by the indicated height axis h.

Fig. 7a and 7b show a second variant of a plug-in module 8. In the case of the embodiment according to fig. 7a, the plug-in module 8 has a monitoring module 10 in addition to the base module 9. In the case of the embodiment according to fig. 7b, the plug-in module 8 has four monitoring modules 10 in addition to the base module 9. Three of the four monitoring modules 10 are shown in the assembled state, whereas the fourth monitoring module 10 is shown in the not yet assembled state. The monitoring module 10 shown in fig. 7a is likewise shown in a state not yet assembled.

Fig. 8 shows a side view of the monitoring module 10, as it is shown in fig. 7a and 7 b. The monitoring module 10 has a first leg 18 and a second leg 19, wherein the first leg 18 is at right angles to the second leg 19. The two

legs

18,19 are connected via a connecting piece 21, which is arranged at an angle of 45 ° to the two

legs

18,19, respectively. A projection 20 is formed on the first leg 18. The projection 20 is formed corresponding to the recess 17 in the housing 5 of the overvoltage protection module 3. To assemble the monitoring module 10, the projection 20 is brought into the recess 17. The second leg 19 constitutes a housing for the sensor 11. In the assembled state of the monitoring module 10, the sensor 11 of the monitoring module 10 is therefore arranged in the region of the connection point 6 of the overvoltage protection module 3. The illustrated embodiment offers the advantage of an easy assembly of the monitoring module 10. As is apparent from fig. 7b, the individual monitoring modules 10 can each (or individually, i.e. einzeln) be mounted on the housing 5 and can likewise each be detached from the housing 5.

Not shown but encompassed by the invention is a design in which the housing for the sensor 11 is constructed as a separate component at the second leg 19. The housing is then arranged at the second leg 19 in a height-adjustable manner, so that the distance between the sensor 11 and the coupling point 6 can be adjusted in a simple manner.

Fig. 9 shows a design which differs from the design shown in fig. 1 in that the measuring module 2 is not directly connected to the overvoltage protection module 3. The base module 9 of the plug-in module 8 is connected to the housing 4 of the measuring module 2, whereas the monitoring module 10 is connected to the housing 5 of the overvoltage protection module 3. The base module 9 and the monitoring module 10 are then connected to one another via a line 22, in particular for ensuring communication between the base module 9 and the monitoring module 10.

In contrast to the embodiment of the overvoltage protection device 1 shown in fig. 1, the base module 9 does not extend over the entire length of the measuring module 2.

List of reference numerals

1 overvoltage protector

2 measuring module

3 overvoltage protection module

4 housing of measuring module

5 housing of overvoltage protection module

6 connecting point

7 electric lead

8 plug-in module

9 basic module

10 monitoring module

11 sensor

12 hollow part

Inquiry unit for inquiring remote notification contact

14 side wall

15 air and creepage distance extension

16 dovetail groove connection

17 blank part

18 first leg

19 second leg

20 raised part

21 connecting piece

22 wires.

Claims

1. Overvoltage protection device (1) having a measuring module (2) and having at least one overvoltage protection module (3), wherein the measuring module (2) and the overvoltage protection module (3) have housings (4,5), and wherein the overvoltage protection module (3) has at least one connection point (6) for connecting at least one electrical line (7),

it is characterized in that the preparation method is characterized in that,

the overvoltage protection device (1) has a plug-in module (8) having a base module (9) and having at least one monitoring module (10), wherein the plug-in module (8) can be connected from the outside to the housings (4,5) of the measurement module (2) and the overvoltage protection module (3) and the at least one monitoring module (10) is used to monitor the overvoltage protection module (3) and is arranged in the region of the at least one connection point (6).

2. The overvoltage protector (1) according to claim 1, characterized in that the monitoring module (10) has at least one sensor (11).

3. The overvoltage protector (1) according to claim 1 or 2, characterized in that the monitoring module (10) has a recess (12) for an electrical conductor (7) coupled at the coupling point (6) and that one sensor (11) or a plurality of sensors arranged in the monitoring module (10) are arranged next to the recess (12).

4. The overvoltage protection device (1) according to claim 1 or 2, wherein the overvoltage protection module (3) has remote notification contacts, characterized in that the monitoring module (10) has an interrogation unit (13) for interrogating the remote notification contacts.

5. The overvoltage protection device (1) according to claim 1 or 2, wherein the overvoltage protection device (1) has at least one further overvoltage protection module (3), characterized in that the plug-in module (8) has at least one further monitoring module (10) and each monitoring module (10) is associated with at least one overvoltage protection module (3).

6. The overvoltage protection device (1) as claimed in claim 1 or 2, characterized in that the plug-in module (8) is constructed in multiple parts.

7. Overvoltage protector (1) according to claim 5, characterized in that at least one monitoring module (10) has at least one air and creepage extension (15) for extending the air and creepage distance between two adjacent connection points (6) or two adjacent electrical conductors (7).

8. The overvoltage protection device (1) according to claim 1 or 2, characterized in that the base module (9) and the monitoring module (10) or the monitoring modules (10) of the plug-in module (8) are connectable or connected to each other galvanically, capacitively, inductively, optically or mechanically.

9. The overvoltage protection device (1) according to claim 1 or 2, characterized in that the at least one monitoring module (10) is connected to the housing (5) of the at least one overvoltage protection module (3) in a height-adjustable manner.

10. The overvoltage protection device (1) as claimed in claim 1 or 2, characterized in that the monitoring module (10) has a first leg (18) and a second leg (19) and a separate housing for the sensor (11) is formed at the second leg (19), wherein the housing is arranged at the second leg (19) in a height-adjustable manner, so that in the assembled state the distance between the sensor (11) and the coupling point (6) is adjustable.

11. The overvoltage protector (1) according to claim 2, characterized in that the monitoring module (10) has a current sensor for measuring the current through an electrical conductor (7) coupled at the coupling point (6).

12. The overvoltage protector (1) as claimed in claim 6, characterized in that the base module (9) and the at least one monitoring module (10) are constructed as separate components which can be connected to one another.

13. The overvoltage protection device (1) according to claim 9, wherein the at least one monitoring module (10) is height-adjustably lockable with the housing (5) of the at least one overvoltage protection module (3).

14. Plug-in module (8) for an overvoltage protection device (1), wherein the overvoltage protection device (1) has a measuring module (2) and at least one overvoltage protection module (3), wherein the measuring module (2) and the overvoltage protection module (3) have housings (4,5), and wherein the overvoltage protection module (3) has at least one connection point (6) for connecting at least one electrical line (7),

it is characterized in that the preparation method is characterized in that,

the plug-in module (8) has a base module (9) and at least one monitoring module (10), the plug-in module (8) being connectable from the outside to the measuring module (2) and to the housing (4) of the overvoltage protection module (3), and the monitoring module (10) being designed to monitor the overvoltage protection module (10).

15. Plug-in module (8) according to claim 14, characterized in that the plug-in module (8) is constructed according to the features characterizing the plug-in module (8) of claims 2 to 9.