Test plug system

Abstract

In a test plug system (1) having an operating part (2) and a test plug (3), a closure element (22) is captively arranged on the operating part (2) and can be moved on the operating part (2) between a first position, in which the closure element (22) covers a first plug portion (21) of the operating part (2), and a second position, in which the closure element (22) exposes the first plug portion (21) for plug-in connection to a second plug portion (31) of the test plug (3).

Description

[0001] Test plug system

[0002] The invention relates to a test plug system according to the preamble of claim 1.

[0003] Such a test plug-in system comprises an operating part that can be connected to a first electrical connecting line for connecting a sensor device and to a second electrical connecting line for connecting to a protective device. The operating part has a first plug-in section, a first connection module assigned to the first electrical connecting line, and a second connection module assigned to the second electrical connecting line. The first connection module has an arrangement of first contact elements, and the second connection module has an arrangement of second contact elements. In an operating position for electrically connecting the first electrical connecting line and the second electrical connecting line, the first contact elements and the second contact elements make electrical contact with one another.

[0004] The test plug system also comprises a test plug which has a second plug section which can be plugged into the first plug section of the operating part. In the operating position, the test plug is not connected to the operating part. In a test position, however, the test plug is connected to the operating part. The test plug has a third connection module which can be plugged into the first connection module and / or a fourth connection module which can be plugged into the second connection module for connecting the test plug to at least one test device. The test plug also has a disconnecting device which is designed to electrically disconnect the first contact elements of the first connection module of the operating part and the second contact elements of the second connection module of the operating part from one another in the test position.

[0005] Such a test plug system is used, for example, in the energy supply sector, for example on an energy supply network or on other electrical supply lines connected, for example, to an energy generator.

[0006] In the energy supply sector, for example, it is intended to record currents and voltages on supply lines via a sensor device and to transmit measurement signals to a protective device for monitoring. In order to test the correct function of the protective device and / or the sensor device, a test plug system is integrated into an arrangement of connecting cables between the sensor device and the protective device. In normal operation, depending on the operating position of the test plug system, signals are to be transmitted from the sensor device to the protective device via the test plug system. In test operation, corresponding to the test position with the test plug connected to the operating part, the connection between the sensor device and the protective device should be interrupted in order to test the function of the sensor device and / or the protective device using one or more test devices connected to the test plug.

[0007] In a test plug system known from EP 3 229 034 B1, a test plug can be connected to an operating component. When the test plug is plugged into the operating component, plug contacts on the test plug contact associated plug contacts on the operating component. Plugging the test plug into the operating component causes the contact elements on the operating component to be separated, thus interrupting an electrical connection between lines connected to the operating component.

[0008] In the test plug system of EP 3 229 034 B1, a protective cover is connected to the operating part in an operating position. This protective cover is removed to connect the test plug to the operating part.

[0009] The object of the present invention is to provide a test plug system which, with a simple design, enables convenient and electrically reliable handling.

[0010] This object is achieved by an article having the features of claim 1.

[0011] Accordingly, the operating part has a closure element which is arranged captively on the operating part and is movable on the operating part between a first position in which the closure element covers the first plug-in section and a second position in which the closure element releases the first plug-in section for plug-in connection with the second plug-in section of the test plug.

[0012] The operating part is connectable to a first electrical connecting line for connecting to a sensor device and a second electrical connecting line for connecting to a protective device. In an operating position, the operating part is arranged in a connection path between the sensor device and the protective device. In an operating position, an electrical connection is established between the first connecting line and the second connecting line via the first and second connection modules of the operating part, thus transmitting signals from the sensor device to the protective device.

[0013] For this purpose, the first connection module and the second connection module have contact elements which electrically contact each other in the operating position, so that an electrical connection is established between the connection modules and the connecting lines connected to the connection modules.

[0014] The operating part has a first plug-in section, via which the test plug can be plugged into the operating part. For plug-in connection, a second plug-in section of the test plug is placed onto the first plug-in section of the operating part, thus establishing a plug-in connection. For this purpose, first plug contacts of the operating part are preferably arranged in the region of the first plug-in section, and second plug contacts of the test plug are preferably arranged in the region of the second plug-in section, so that by plugging the test plug into the operating part, electrical contact can be established between the connection modules of the test plug and the operating part.

[0015] The closure element arranged on the operating part covers the first plug-in section of the operating part in a first position such that the first plug-in section of the operating part is protected from external dirt and damage. From the first position, the closure element can be moved out and into a second position, in which the first plug-in section of the operating part is released so that the test plug can be plugged into the operating part.

[0016] The closure element is captively mounted on the operating part. If the test plug is not connected to the operating part, the closure element, in the first position, can cover the first plug-in section and the plug contacts located in the area of ​​the first plug-in section from the outside, thus protecting them. If the test plug is plugged into the operating part, the closure element remains attached to the operating part and thus cannot be lost. After the test plug is removed from the operating part, the closure element can easily be returned to the first position to cover the first plug-in section.

[0017] In one embodiment, the operating part comprises a housing. The closure element is movably connected to the housing. For example, the closure element can be displaceably or pivotably connected to the housing. Thus, the closure element is, for example, displaceably mounted on the housing and can be moved between the first position and the second position on the housing. Alternatively, the closure element can be pivotably mounted on the housing and can thus be pivoted relative to the housing to transfer it between the first position and the second position.

[0018] Because the closure element is captively arranged on the operating part and is adjustable in a defined manner between the first position and the second position, the closure element can be arranged on the operating part in such a way that it does not significantly contribute to the installation space and in particular does not cause any significant increase in the installation space. In the first position, the closure element can be arranged compactly on the plug-in section such that the plug-in section is covered by the closure element. In the second position, in contrast, the closure element can be in a stowed position on the operating part in which the plug-in section is released and the closure element, for example, assumes an intermediate position between the operating part and the test plug when the test plug is connected to the operating part.Even in the second position, the closure element assumes a defined position on the operating part, preferably such a position that the installation space of the combination of the operating part with the test plug is not significantly increased by the closure element.

[0019] In one embodiment, the closure element is, for example, spring-biased relative to the housing, preferably in the direction of the first position, so that the closure element is automatically returned to the first position when the test plug is released from the operating part.

[0020] In one embodiment, the closure element can be locked in both positions via locking points, which provide a defined positioning of the closure element in the respective position.

[0021] In one embodiment, the operating part has a first housing part which has a trough shape delimited by a base and side walls and encloses the first connection module and the second connection module. The first housing part thus represents a housing for the first connection module and the second connection module and accommodates the first connection module and the second connection module in an interior space. The first connecting line and the second connecting line can be connected, in particular, in the interior of the first housing part to the first connection module or the second connection module, such that electrical contact is established between the connecting lines and the connection modules in the interior of the first housing part.

[0022] In one embodiment, the operating part has a second housing part that is connected to the first housing part and forms the first plug-in section. The housing of the operating part is accordingly designed in two parts. The second housing part is connected to the first housing part and completes the housing of the operating part. In particular, the second housing part can close the trough-shaped first housing part in the direction of the test plug and thereby form an interface for plugging the test plug into the operating part by arranging the first plug-in section on the second housing part and, for this purpose, for example, plug contacts of the connection modules of the operating part are located in the region of the second housing part.

[0023] In one embodiment, the first housing part is formed in one piece. The first housing part, which forms a tub-shaped housing, is thus manufactured from a single piece, resulting in simple production and assembly. For assembly, the connection modules are accommodated in the interior space enclosed by the tub-shaped first housing part, and the housing is completed by connecting the second housing part to the first housing part.

[0024] For example, the first housing part can be formed from an (electrically conductive) metal material or a plastic material coated with an (electrically conductive) metal material. An electrically conductive coating can, for example, be applied to an outer surface of the first housing part. Additionally or alternatively, the second housing part can be formed from an (electrically conductive) metal material or a plastic material coated with an (electrically conductive) metal material.By providing electrical conductivity to the first housing part and / or the second housing part, electrical shielding can be provided on the housing of the operating part. This shielding, like a Faraday cage, shields electrical components enclosed inside the housing of the operating part from electromagnetic fields, thus at least reducing the risk of signal interference at the operating part. In one embodiment, the first housing part is connected to a grounding line. For this purpose, a screw point can be provided on the first housing part, for example, to which the grounding line can be screwed using a cable lug attached thereto.By attaching the grounding wire, the housing of the operating part is included in a grounding system and can thus provide electromagnetic shielding for electrical components enclosed in the operating part, in particular components of the connection modules.

[0025] In one embodiment, the operating part has a first connection, via which the first electrical connecting line can be connected to the operating part, and a second connection, via which the second electrical connecting line can be connected to the operating part. In a normal operating position, the first connecting line and the second connecting line are connected to the operating part and thus electrically connected to the connection modules of the operating part. The first electrical connecting line is connected via the first connection, and the sensor device is connected via this connection. In contrast, the second connecting line is connected via the second connection, and the protective device is connected via this connection.

[0026] The first connection and the second connection can each be configured by a connector, in particular a multi-contact connector, for example an RJ45 connector.

[0027] In another embodiment, the first connection and the second connection can also be formed, for example, by a cable gland through which the respective connecting cable can be inserted into the operating part and screwed to the housing of the operating part for the purpose of strain relief. If a cable gland is provided, the conductors of the respective connecting cable are, for example, directly connected to the respective associated connection module.

[0028] In one embodiment, the test plug has a third connection assigned to the third connection module for connecting to a first test device and / or a fourth connection assigned to the fourth module for connecting to a second test device. If both a third connection module and a fourth connection module are provided on the test plug, then in a normal operating position, for example, a first test device and a second test device are connected to the test plug and, in the test position, are connected to the first connection module and, via the first connecting line, to the sensor device, or to the second connection module and, via the second connecting line, to the protective device.

[0029] For example, in one embodiment, the third connection can be formed by an arrangement of sockets for individual conductors. The fourth connection, in contrast, can be formed by a multi-contact connector, for example, an RJ45 connector.

[0030] In one embodiment, the third connection module is designed to make electrical contact with the first connection module when the test plug is plugged into the operating part, before the isolating device electrically separates the first contact elements and the second contact elements from one another. Additionally or alternatively, it can be provided that the fourth connection module is designed to make electrical contact with the second connection module when the test plug is plugged into the operating part, before the isolating device electrically separates the first contact elements and the second contact elements from one another. When the test plug is plugged in, a connection is thus established between the connection modules before the isolating device of the test plug electrically separates the contact elements of the connection modules on the operating part side.Such a so-called "make-before-break" mode of operation can, for example, ensure that a test signal is fed into the test plug via a connected test device before the connection of the connection modules on the operating part side is severed via the isolating device. For example, this can prevent a protective device connected to the operating part via the second connecting cable from switching to a fault condition when the test plug is plugged into the operating part, because the protective device may no longer receive a signal from the sensor device.

[0031] In one embodiment, the operating part can be connected to a wall, for example, a control cabinet, without the need for tools. Such tool-free installation enables particularly easy handling of the test plug-in system, in particular because the operating part can be mounted without tools, for example, in or on a control cabinet.

[0032] To enable such tool-free assembly, the operating part can, for example, have an elastically movable locking element designed to lock the operating part to a wall. The locking element can, for example, be arranged on the first housing part of the operating part and be elastically preloaded relative to the first housing part via a spring element. The locking element is guided on the first housing part and can be moved on the first housing part, so that the locking element can elastically deflect when the operating part is placed against an associated wall and, in an attached position, snaps elastically into a position in which the operating part is secured to the wall via the locking element.

[0033] In one embodiment, the operating part has a housing flange for engagement with the wall. The elastically movable locking element is arranged relative to the housing flange such that the wall is held between the housing flange and the locking element when the operating part is placed against the wall. In the assembled position, the wall occupies an intermediate position between the locking element and the housing flange, thereby securing the operating part to the wall.

[0034] For example, a run-up slope can be formed on the locking element, which is designed in such a way that when the operating part is placed, for example in a wall opening on the wall, the locking element can run onto the wall and be elastically deflected in order to then, after the locking element has passed the wall, snap into a locking position and thus fix the operating part relative to the wall.

[0035] The locking element can, for example, be arranged on a first side of the first housing part of the operating part. On a second, opposite side of the first housing part of the operating part, a fixed undercut section can, for example, be formed. In this case, assembly is carried out by inserting the operating part into a wall opening, for example, and placing it against the wall with the fixed undercut section. The locking element is then brought into engagement with the wall, for example, with an edge surrounding the wall opening.

[0036] The locking mechanism via the locking element can be designed to be self-locking, so that the locking mechanism via the locking element cannot be released automatically when force is applied to the operating part. To further secure the assembly, the locking element can be secured in a locked position, for example, using a fastening element, such as a screw element, so that the operating part cannot be easily released from the wall after assembly, at least not without loosening the fastening element.

[0037] In one embodiment, the first connection module has a first arrangement of connection terminals for connecting first electrical conductors for electrically connecting the first connection module to the first connecting line. In addition, the second connection module has a second arrangement of connection terminals for connecting second electrical conductors for electrically connecting the second connection module to the second connecting line. An electrical connection between the first connection module and the associated first connecting line and also between the second connection module and the associated second connecting line can thus be established via connection terminals during assembly of the operating part. The conductors connect the connection terminals to an associated connection, for example a plug-in connector.Alternatively, conductors of the first connecting line or conductors of the second connecting line can be connected directly to the connection modules via the connection terminals.

[0038] Such a connection terminal can be designed, for example, by a spring-loaded connection, a screw connection, a pusher connection, a bolt connection or another terminal device with which a conductor can be connected and electrically contacted, for example, with a current bar.

[0039] In one embodiment, the connection terminals of the first connection assembly each have a first current bar and a first spring element for electrically contacting a first conductor with the first current bar. In addition, the connection terminals of the second connection assembly each have a second current bar and a second spring element for electrically contacting a second conductor with the second current bar. The respective spring element can be elastically deflected to connect a conductor and, in the connected position, clamps the respective conductor to the associated current bar so that the conductor is electrically contacted with the current bar and is also mechanically locked to the connection terminal. If necessary, the spring element can be moved from a clamped position to a release position via an actuating element in order to release a connected conductor from the respective connection terminal.The use of such terminal blocks results in a simple connection process for connecting electrical conductors for the purpose of assembling and configuring the operating part.

[0040] In one embodiment, a first contact element is connected to each first current bar and a second contact element is connected to each second current bar. The contact elements of the first and second connection assemblies contact one another in the operating position, so that the current bars of the connection terminals of the first and second connection assemblies are electrically contacted with one another and thus electrical signals can be transmitted between the first connection assembly and the second connection assembly. When the test plug is connected, the contact elements are separated from one another, so that the electrical connection between the connection assemblies on the operating part is canceled and the current bars of the connection terminals of the first connection assembly and the second connection assembly are thus separated from one another.

[0041] In one embodiment, the connection terminals of the first connection module and the second connection module have first plug contacts for plugging into contact with second plug contacts of the third connection module and / or the fourth connection module when the test plug is plugged into the operating part. The first plug contacts are, for example, integrally formed on the current bars of the first and second connection modules and can be designed, for example, as contact sockets or contact pins.If the test plug is plugged into the operating part, the associated second plug contacts of the test plug engage with the first plug contacts of the connection modules of the operating part and thus make electrical contact with the first plug contacts, so that an electrical connection is established between the connection modules of the test plug and the connection modules of the operating part and thus a first test device is connected to the first connecting line and via this to the sensor device and a second test device is connected to the second connecting line and via this to the protective device.

[0042] In one embodiment, the operating part has a plurality of first slice modules arranged in a row along a row direction. A connection terminal of the first connection module and a connection terminal of the second connection module are arranged on each first slice module. Because the connection modules are designed modularly with slice modules, the connection modules of the operating part can be scaled modularly. If more or fewer connection terminals are to be provided on the operating part, the number of slice modules with the connection terminals arranged on them can be adjusted accordingly. This results in a simple, modular, scalable arrangement of connection modules on the operating part with variable adaptability of the number of poles.

[0043] In one embodiment, the third connection module has a third arrangement of connection terminals for connecting third electrical conductors for electrically connecting the third connection module to a first test device. Additionally or alternatively, the fourth connection module has a fourth arrangement of connection terminals for connecting fourth electrical conductors for electrically connecting the fourth connection module to a second test device. An electrical connection between the third connection module and the first test device and / or between the fourth connection module and the second test device can thus be established via connection terminals during assembly of the operating part. The conductors connect the respective connection module, for example, to an associated connection, for example a connector in the form of a multi-contact connector, for example an RJ45 plug, or an arrangement of sockets.

[0044] On the test plug side, the respective connection terminal can also be designed, for example, by a spring-loaded connection, a screw connection, a pusher connection, a bolt connection or another terminal device with which a conductor can be connected and electrically contacted, for example, with a current bar.

[0045] The connection terminals of the operating part and the test plug can be of the same type or of different types.

[0046] In one embodiment, the connection terminals of the third connection assembly each have a third current bar and a third spring element for electrically contacting a third conductor with the third current bar. Additionally or alternatively, the connection terminals of the fourth connection assembly each have a fourth current bar and a fourth spring element for electrically contacting a fourth conductor with the fourth current bar. The respective spring element can be elastically deflected to connect a conductor and, in the connected position, clamps the respective conductor to the associated current bar, so that the conductor is electrically contacted with the current bar and is also mechanically locked to the connection terminal. If necessary, the spring element can be moved from a clamped position to a release position via an actuating element in order to release a connected conductor from the respective connection terminal.

[0047] Using such terminals results in a simple connection process for connecting electrical conductors for the purpose of assembling and configuring the test plug.

[0048] In one embodiment, the test plug comprises a plurality of second slice modules arranged in a row along a row direction, with a connection terminal of the third connection module and / or a connection terminal of the fourth connection module being arranged on each second slice module. If more or fewer connection terminals are to be provided on the test plug, the number of slice modules with the connection terminals arranged thereon can be adjusted accordingly. This results in a simple, modular, scalable arrangement of connection modules on the test plug with variable adaptability of the number of poles.

[0049] In one embodiment, the connection terminals of the third connection module and / or the fourth connection module have second plug contacts for plugging into contact with the first plug contacts of the first connection module and / or the second connection module when the test plug is plugged into the operating part. The second plug contacts are, for example, formed integrally on the current bars of the third and fourth connection modules and can be designed, for example, as contact sockets or contact pins.When the test plug is plugged into the operating part, the second plug contacts of the test plug engage with the first plug contacts of the connection modules of the operating part and thus make electrical contact with the first plug contacts, establishing an electrical connection between the associated connection modules of the test plug and the connection modules of the operating part. Thus, a first test device is connected to the first connecting cable and, via this, to the sensor device, and a second test device is connected to the second connecting cable and, via this, to the protective device. In one embodiment, the isolating device is formed by a plurality of isolating pins.The trend pins protrude, for example, from the second plug-in section of the test plug and, when the test plug is plugged into the operating part, engage with associated engagement openings on the first plug-in section of the operating part and thereby act on the first contact elements and the second contact elements of the first connection module and the second connection module on the operating part in order to separate the first contact elements and the second contact elements from one another.

[0050] For example, a separating mandrel can be assigned to each pair of a first contact element and a second contact element.

[0051] In one embodiment, the operating part has a sealing device for securing the closure element in the first position. For example, a first sealing element can be formed on the closure element and a second sealing element can be formed on the second housing part of the operating part. The sealing elements each have an opening through which, for example, a sealing wire can be passed, so that the closure element can be sealed to the housing of the operating part. Opening the closure element therefore requires the release of the sealing wire and is thus detectable and traceable.

[0052] In one embodiment, the test plug has at least one locking element for locking into the operating part in the test position. For example, two locking elements can be arranged on the test plug, via which the test plug can lock into the operating part in the test position, so that the test plug is locked to the operating part in the test position and cannot be easily removed from the operating part, at least not without releasing the locking mechanism.

[0053] In one embodiment, the at least one locking element is elastically deflectable relative to a housing part of the test plug. For example, the at least one locking element can be formed integrally with the at least one locking element. When the test plug is plugged into the operating part, the locking element engages with an associated locking portion on the operating part, thereby creating a latching connection between the plug and the operating part. For example, by manually deflecting the at least one locking element, the locking can be released to detach the test plug from the operating part. The concept underlying the invention will be explained in more detail below with reference to the exemplary embodiments illustrated in the figures. They show:

[0054] Fig. 1 is a view of a test plug system comprising an operating part and a test plug to be connected to the operating part;

[0055] Fig. 2 is a view of the operating part;

[0056] Fig. 3 shows another view of the operating part with the test plug arranged thereon;

[0057] Fig. 4 is a view of the test plug system with the test plug connected to the operating part;

[0058] Fig. 5 is a sectional view along the line 11 of Fig. 1;

[0059] Fig. 6 is a sectional view along the line ll-ll of Fig. 4;

[0060] Fig. 7 is an enlarged view of a section of the view according to Fig. 6;

[0061] Fig. 8 is a view of a first housing part of the operating part;

[0062] Fig. 9 is a sectional view through the first housing part;

[0063] Fig. 10 shows the sectional view according to Fig. 9 in a perspective view;

[0064] Fig. 11 the operating part in a mounted position on a wall;

[0065] Fig. 12 is another view of the arrangement according to Fig. 11;

[0066] Fig. 13 is a sectional view taken along line BB of Fig. 12;

[0067] Fig. 14 is a sectional view taken along the line CC of Fig. 12;

[0068] Fig. 15 is a perspective view of the sectional view according to Fig. 14;

[0069] Fig. 16 is a sectional view taken along line DD of Fig. 12; Fig. 17 is an enlarged view of detail C1 of Fig. 16;

[0070] Fig. 18 is an enlarged view in section C2 according to Fig. 16;

[0071] Fig. 19 is a view of another embodiment of an operating part of a test plug system;

[0072] Fig. 20 is a view of yet another embodiment of an operating part of a test plug system;

[0073] Fig. 21 is a view of the operating part according to Fig. 20, with a closure element in a folded-out, second position;

[0074] Fig. 22 is a view of an embodiment of an operating part with a sealing device for sealing a closure element;

[0075] Fig. 23 is an enlarged view in section C3 according to Fig. 22;

[0076] Fig. 24 is a view of an embodiment of an operating part;

[0077] Fig. 25 is a view of an embodiment of an operating part with a grounding line connected to a first housing part;

[0078] Fig. 26 is a view of an arrangement of disc modules arranged in series to form connection assemblies of the operating part and the test plug;

[0079] Fig. 27 is a view of an embodiment of a test plug on an operating part;

[0080] Fig. 28 is a sectional view taken along the line EE of Fig. 27;

[0081] Fig. 29 is a view of an embodiment of a test plug on an operating part;

[0082] Fig. 30 is a sectional view taken along the line FF of Fig. 29; Fig. 31 is a view of an embodiment of a test plug system comprising a test plug and an operating part;

[0083] Fig. 32 is a plan view of the arrangement according to Fig. 31;

[0084] Fig. 33 is a sectional view along the line GG according to Fig. 32;

[0085] Fig. 34 the sectional view according to Fig. 33, with the

[0086] locking elements; and

[0087] Fig. 35 is a schematic view of a test plug system arranged in a connection path between a sensor device and a protective device.

[0088] Fig. 1 shows an embodiment of a test plug system 1 which has an operating part 2 and a test plug 3 which can be connected to the operating part 2 along a plugging direction X.

[0089] As schematically illustrated in Fig. 35, the test plug system 1 is designed to enable a test of the functionality of the sensor device 5 and the protective device 6 in a connection path between a sensor device 5 and a protective device 6. The sensor device 5 serves, for example, to detect current and voltage on an arrangement of electrical lines 4, for example electrical supply lines within a power supply system. The sensor device 5 is connected to the operating part 2 of the test plug system 1 via a first connecting line 50. A protective device 6 is also connected to the operating part 2 via a second connecting line 60.In an operating position in which the test plug 3 is not connected to the operating part 2, signals are passed from the sensor device 5 on the operating part 2 to the protective device 6, so that monitoring and, if necessary, control can be carried out by the protective device 6. In a test position in which the test plug 3 is plugged into the operating part 2, the connection path to the operating part 2 is electrically interrupted, so that the functionality of the sensor device 5 and / or the protective device 6 can be tested via test devices 90, 91 on the test plug 3.

[0090] As can be seen from Figs. 1 to 4, the operating part 2 has a first, lower housing part 20 and a second, upper housing part 23. The housing parts 20, 23 are connected to one another to create a housing and, as can be seen from the sectional views according to Figs. 5 to 7, enclose connection assemblies 26, 27 in their interior, to which the connecting lines 50, 60 are electrically connected.

[0091] In the illustrated embodiment, a closure element 22 is arranged on the housing part 23 so as to be displaceable along an actuating direction B on a displacement track 201.

[0092] In a first position, shown in Fig. 1, the closure element 22 covers a plug-in section 21 on the housing part 23 to the outside, so that penetration of dirt and damage to the plug-in section 21 is counteracted.

[0093] In order to connect the test plug 3 to the operating part 2, the closure element 22 can be transferred from the first position into a second position shown in Fig. 2 and for this purpose can be displaced on the housing part 23 so that the plug-in section 21 is released and the test plug 3 can be connected to the operating part 20 by means of a plug-in section 31 formed on a housing part 30 along the plug-in direction X.

[0094] As can be seen from Fig. 2, plug-in openings 210, 211 are formed on the plug-in section 21 of the operating part 20, which are assigned to plug contacts of the connection assemblies 26, 27. Between each pair of plug-in openings 210, 211, an engagement opening 212 is formed, through which separating pins of a separating device 310 of the test plug 3 can be inserted in order to electrically separate the connection assemblies 26, 27 from one another on the side of the operating part 2.

[0095] As can be seen from Fig. 3, in the illustrated embodiment, terminals 24, 25 in the form of plug-in connectors, namely multi-contact connectors in the form of RJ45 plugs, are arranged on the side of the operating part 2. The first line 50 for connection to the sensor device 5 can be connected via the terminal 24. In contrast, the second line 60 for connection to the protective device 6 can be connected via the terminal 25.

[0096] As can be seen from Fig. 4, terminals 32, 33 for connecting to the test devices 90, 91 are arranged on the test plug 3. The terminal 32 is configured as an arrangement of sockets for connecting to the test device 90, so that the test device 90 can be connected to the sensor device 5 via the sockets 32 when the test plug 3 is plugged into the operating part 2. In contrast, the terminal 33 in the illustrated embodiment is configured as a multi-contact connector, namely an RJ45 connector.

[0097] The closure element 22 is captively arranged on the operating part 2 and can be displaced on the housing part 23 of the operating part 2 between the first position in which the closure element 22 covers the plug-in section 21 (Fig. 1), and the second position in which the closure element 22 releases the plug-in section 21 (Fig. 2). Due to the displaceable arrangement of the closure element 22 on the operating part 2, a compact design is obtained in which the closure element 22 compactly covers the plug-in section 21 in the first position (Fig. 1) and, in the second position with the test plug 3 connected to the operating part 2 (Fig. 4), occupies an intermediate position between the operating part 2 and the test plug 3. Even in the second position, the closure element 22 therefore contributes little or nothing to the installation space of the combination of the operating part 2 and the test plug 3.

[0098] As can be seen from Fig. 4, the closure element 22 can be adapted in its outer contours and its external shape and design to the operating part 2 and the test plug 3, so that the closure element 22 is accommodated in the test position of the test plug 3 in a space-efficient manner between the test plug 3 and the operating part 2 and, in particular, does not protrude significantly outwards relative to the test plug 3 and the operating part 2.

[0099] Due to the captive arrangement and mobility of the closure element 22 on the operating part 2, an intuitive handling is also achieved, in which a user, in order to connect the test plug 3, moves the closure element 22 in a comfortable manner between the first, covering position (Fig. 1) into the predetermined second position, corresponding to a storage position, in order to enable the plugging in of the test plug 3 (Fig. 2).

[0100] Fig. 5 shows the operating part 2 along a sectional view along the line 11 according to Fig. 1. The position of the sectional plane corresponds to the line 11 according to Fig. 2. Fig. 7, on the other hand, shows a sectional view along the line 11-11 according to Fig. 4 with the test plug 3 connected to the operating part 2.

[0101] The operating part 2 has a first connection assembly 26 with a plurality of connection terminals in the form of spring-loaded connections, which are connected via electrical conductors 240 to the first connection 24 and, in the normal operating position, to the first connecting line 50 and thus to the sensor device 5. The operating part 2 also has a second connection assembly 27 with a plurality of connection terminals, which are connected via conductors 250 to the second connection 25 and, in the normal operating position, to the second connecting line 60 and thus to the protective device 6. The conductors 240, 250 are each connected to terminal arrangements 280 on a printed circuit board 28 and are connected via the printed circuit board 28 and conductor tracks arranged thereon to the associated connection 24, 25.

[0102] Each terminal has a current bar 260, 270, a spring element 261, 271, and an actuating element 262, 272. The conductors 240, 250 are connected to the respective connection assembly 26, 27 via the terminals, so that the terminals 24, 25 are electrically connected to the connection assemblies 26, 27.

[0103] The connection terminals of the first connection assembly 26 each have a contact element 263 formed on the current bar 260 of the respective connection terminal. Furthermore, the connection terminals of the second connection assembly 27 each have a contact element 273 formed on the current bar 270 of the respective connection terminal. In an operating position, with the test plug 3 not plugged in, the contact elements 263, 273 contact one another in pairs via contact sections 264, 274, so that one connection terminal of the connection assembly 26 and one connection terminal of the connection assembly 27, and above them a pair of associated lines 240, 250, are contacted one another via the contact elements 263, 273, and thus one pole of the connection 24 and one pole of the connection 25.

[0104] If the test plug 3 is plugged into the operating part 2 along the plugging direction X, as can be seen from Fig. 6, a separating mandrel of a separating device 310 is pushed between a respective pair of contact elements 263, 273, so that the contact elements 263, 273 are electrically separated from one another, as can be seen from Figs. 6 and 7. When plugged in, the separating mandrel runs onto the spherically shaped contact sections 264, 274 and thus reaches an intermediate position between the contact sections 264, 274, so that the electrical contact between the contact elements 263, 273 is canceled, as can be seen from Figs. 6 and 7.

[0105] Each terminal of the connection assembly 26 and the connection assembly 27 also has a plug contact 265, 275 in the form of a contact socket, as can be seen, for example, from the sectional views according to Figs. 16 and 18. Each plug contact 265, 275 is arranged in alignment with a respective associated plug opening 210, 211 on the plug section 21 of the housing part 23.

[0106] As can be seen from Fig. 6, the test plug 3, enclosed in a housing part 30, has connection assemblies 36, 37, which—analogous to the connection assemblies 26, 27—each have a current bar 360, 370, a spring element 361, 371, and an actuating element 362, 372. The sockets 32 are connected to the connection assemblies 36 via conductors 320. In contrast, the terminals of the connector 33 in the form of the RJ45 plug are connected to the connection assembly 37 via conductors 330.

[0107] On the current bar 360, 370 of each connection terminal of the connection modules 36, 37, a plug contact 363, 373 is formed in the form of a contact pin, as can be seen from the sectional views according to Fig. 18, 28 and 30. If the test plug 3 is plugged into the operating part 2 along the plugging direction X, the plug contacts 363, 373 of the connection terminals of the connection modules 36, 37 of the test plug 3 engage with the plug contacts 265, 275 of the connection modules 26, 27 of the operating part 2 and thus contact the connection modules 26, 27, so that the first test device 90 at the first connection 32 is connected to the sensor device 5 at the connection 24 and, in addition, the second test device 91 at the connection 33 is connected to the protection device 6 at the connection 25.

[0108] Because the connection modules 26, 27 are electrically decoupled from one another by separating the contact elements 263, 273 and, in addition, the connection modules 36, 37 make electrical contact with the associated connection modules 26, 27 when the test plug 3 is plugged in, the connection 32 is electrically connected to the connection 24 and the connection 33 is electrically connected to the connection 25 with the correct polarity.

[0109] As can be seen from Figs. 8 to 10, in the illustrated embodiment, the housing part 20 of the operating part 2 is formed in one piece and has a trough shape defined by a base 200A and side walls 200B. The terminals 24, 25 are arranged on the base 200A. The terminal assemblies 26, 27 and also the printed circuit board 28 are accommodated in an interior space 200 enclosed by the housing part 20.

[0110] The housing part 20 can be made, for example, from a metal material. If electromagnetic shielding is to be provided on the operating part 2, the housing part 20 can be made, for example, from a metal material or from a plastic material coated with a metal material in order to provide electrical shielding for the assemblies in the interior 200 of the housing part 20 due to the electrical conductivity of the housing part 20. To complete the electromagnetic shielding, the housing part 23 and / or the closure element 24 are advantageously also made from a metal material or from a metal-coated plastic material, so that an enclosure for electrical components in the interior of the operating part 2 and thus electromagnetic shielding is provided by providing a closed Faraday cage.

[0111] In the illustrated embodiment, the operating part 2 can be mounted on a wall 7 without the need for tools. For this purpose, fixed undercut sections 202 are formed on one side of the housing part 20. On another, opposite side of the housing part 20, a locking element 204 is arranged, which is received in a guide opening 203 on the housing part 20, as can be seen from the sectional views according to Figs. 14 to 17. The locking element 204 is elastically preloaded relative to the housing part 20 via a spring element 206.

[0112] In the illustrated embodiment, the locking element 204 has a run-up slope. If the operating part 2 is inserted into a wall opening of a wall 7 in order to mount the operating part 2 on the wall 7, the undercut sections 202 are first brought into engagement with an edge delimiting the wall opening, and then the locking element 204 is snapped onto the wall 7. If, for this purpose, the locking element 204 is placed against an edge section delimiting the wall opening, the locking element 204 runs onto the edge section and is pushed aside until the locking element 204 snaps into engagement with the edge section after passing the edge section, as can be seen from Figs. 14 to 17.Due to the elastic preload of the spring element 206, the locking element 204 comes into a locking position in which the wall 7 assumes an intermediate position between the locking element 204 and the housing flange 205 and the operating part 2 is thus fixed to the wall 7.

[0113] In an additional measure, the locking element 204 can be locked in the locking position by a fastening element 207, for example in the form of a screw, in order to prevent accidental detachment of the operating part 2 from the wall 7. As can be seen from the sectional view according to Fig. 18, each connection terminal of the connection module 36 of the test plug 3 has a plug contact 363 and each connection terminal of the connection module 37 has a plug contact 373. When the test plug 3 is plugged into the operating part 2, the plug contacts 363, 373 contact the associated plug contacts 265, 275 of the connection modules 26, 27, so that the connection terminals of the connection module 36 are connected to the connection terminals of the connection module 26 and the connection terminals of the connection module 37 are connected to the connection terminals of the connection module 27.

[0114] As can be seen from Fig. 18, the contact elements 263, 273 are each arranged on the operating part 2 offset from the plug contacts 265, 275, as viewed in the plug-in direction X. This has the effect that when the test plug 3 is plugged in, electrical contact is first established via the plug contacts 265, 363; 275, 373 before the contact elements 263, 273 are separated from one another. This makes it possible to establish electrical contact with the connection modules 36, 37 before the contact elements 263, 273 are electrically separated and thus before the connection modules 26, 27 of the operating part 2 are decoupled, so that a test signal from a test device 90, 91 can be applied to the connection modules 26, 27 if necessary, before the connection path between the sensor device 5 and the protective device 6 is separated.In this way, for example, a fault in the protective device 6 due to a signal interruption can be avoided.

[0115] In the previously described embodiment, the connections 24, 25 of the operating part 2 are designed as multi-contact connectors, namely RJ45 connectors. In another embodiment, shown in Fig. 19, the connections 24', 25' are formed by cable glands through which connecting lines 50, 60 can be inserted into the interior of the operating part 2 in order to directly connect the conductors of the connecting lines 50, 60 to the connection modules 26, 27 inside the operating part 2.

[0116] Such a configuration can be used, for example, when signals with high voltages are transmitted via the connecting lines 50, 60, in which case, for example, shielded cables of the lines 50, 60 are also connected to a shield of the housing of the operating part 2, for example to the electrically conductive housing part 20, via the cable glands 24', 25'.

[0117] In an embodiment illustrated in Figs. 20 and 21, the closure element 22 is not displaceably arranged on the housing part 23 of the operating part 2, but is pivotable about a pivot axis S relative to the housing part 23. Again, in a first position (Fig. 20), the closure element 22 covers the plug-in section 21 of the operating part 2 to the outside and, in a folded-out second position, releases the plug-in section 21 for plugging into the test plug 3 (Fig. 21).

[0118] In an embodiment illustrated in Figs. 22 to 24, in which the closure element 22 is slidably arranged on the housing part 23 of the operating part 2, as in the embodiment described with reference to Figs. 1 to 4, the operating part 2 has a sealing device, for the implementation of which a sealing element 220, 231 with an opening formed therein is formed on the closure element 22 and on a housing section 230 of the housing part 23. For example, a sealing wire can be passed through the sealing elements 220, 231 in order to seal the closure element 22 in the first position. If the closure element 22 is opened, this can only occur by destroying the seal, so that the opening of the closure element 22 can be traced.

[0119] If the housing of the operating part 2, in particular on the housing parts 20, 23, is designed to be electrically conductive in order to create electrical shielding for components enclosed in the housing parts 20, 23, a grounding line 8 can, for example, be connected to the housing part 20 in order to include the housing in the grounding of, for example, a control cabinet, as can be seen from Fig. 25. For this purpose, a screw point for attaching a fastening element in the form of a screw 208 can be provided on the housing part 20, for example, so that a grounding line 8 can be electrically connected to the housing part 20 via a cable lug arranged thereon.

[0120] The connection assemblies 26, 27 of the operating part 2 and the connection assemblies 36, 37 of the test plug 3 can be provided in a modular manner using slice modules 29, 39. Each slice module 29 on the operating part 2 side has a connection terminal of the connection assembly 26 and a connection terminal of the connection assembly 27. In contrast, each slice module 39 on the test plug 3 side has a connection terminal of the connection assembly 36 and a connection terminal of the connection assembly 37. The slice modules 29, 39 are arranged in a row along a row direction A on the operating part 2 side and on the test plug 3 side, wherein matching arrangements of slice modules 29, 39 are used on the operating part 2 side and on the test plug 3 side.

[0121] By means of such a modular design using disc modules 29, 39, the number of poles on the operating part 2 and on the test plug 3 can be scaled in basically any desired manner, so that an advantageous manufacturability of plug systems with different numbers of poles is enabled.

[0122] For example, as can be seen from Figs. 27 and 28, the connection modules 26, 27, 36, 37 can each be configured with eight pins. Accordingly, eight disk modules 29, 39 are arranged in a row along the row direction A on the operating part 2 and on the test plug 3.

[0123] In an embodiment illustrated in Figs. 29 and 30, the connection modules 26, 27, 36, 37 are each designed with four poles. Accordingly, four disc modules 29, 39 are arranged in a row along the row direction A on the operating part 2 and on the test plug 3.

[0124] In an embodiment shown in Fig. 31 to 34, locking elements 34 are arranged on the test plug 3, which are formed integrally with the housing part 30 of the test plug 3 and can be elastically deflected relative to the housing part 30 via film hinges.

[0125] When the test plug 3 is plugged into the operating part 2 along the plugging direction X, latching sections 340 of the locking elements 34 engage with associated counter-latching sections 209 on the side of the operating part 2, so that in a connected position, shown in Fig. 31, the test plug 3 is latched to the operating part 2, as can be seen from Fig. 33. By a user pressing on actuating sections 341 of the locking elements 34 and thus adjusting the locking elements 34 on both sides of the test plug 3 relative to the housing part 30, the latching can be released and the test plug 3 can thus be removed from the operating part 2. The idea underlying the invention is not limited to the exemplary embodiments described above, but can also be implemented in other ways.

[0126] The closure element is movably mounted on the operating part, whereby the closure element can be displaced, for example, linearly along a rectilinear direction of movement or along a curved direction of movement on the operating part. In other embodiments, the closure element can be pivotable relative to the operating part. In each case, however, the closure element is held captively on the operating part.

[0127] Because the first housing section of the operating part is trough-shaped, components can be enclosed and accommodated within the housing section, while simplifying the manufacturing and assembly of the housing section. The metallic design of the housing section also provides reliable electromagnetic shielding.

[0128] List of reference symbols

[0129] 1 test plug system

[0130] 2 operating part

[0131] 20 Housing part

[0132] 200 interior

[0133] 200A ground

[0134] 200B side walls

[0135] 201 Transfer track

[0136] 202 undercut section

[0137] 203 Guide opening

[0138] 204 locking element

[0139] 205 Housing flange

[0140] 206 spring element

[0141] 207 Fastening element

[0142] 208 Fastener

[0143] 209 Counter-locking section

[0144] 21 plug-in section

[0145] 210, 211 plug-in opening

[0146] 212 Access opening

[0147] 22 locking element

[0148] 220 sealing element

[0149] 23 Housing part

[0150] 230 Housing section

[0151] 231 Sealing element

[0152] 24, 24', 25, 25' connection

[0153] 240, 250 Electrical conductor

[0154] 26, 27 Connection module

[0155] 260, 270 current bars

[0156] 261 , 271 spring element

[0157] 262, 272 Actuating element

[0158] 263, 273 contact element

[0159] 264, 274 Annex section

[0160] 265, 275 plug contact (contact socket)

[0161] 28 circuit board

[0162] 280 terminal arrangement

[0163] 29 Disc module 3 test plugs

[0164] 30 Housing part

[0165] 31 plug-in section

[0166] 310 separating device

[0167] 32 connection contacts (for input side)

[0168] 320 Electrical Conductor

[0169] 33 connectors (for test peripherals)

[0170] 330 Electrical conductor

[0171] 34 Locking element

[0172] 340 rest section

[0173] 341 operating section

[0174] 36, 37 Connection module

[0175] 360, 370 current bars

[0176] 361 , 371 spring element

[0177] 362, 372 Actuating element

[0178] 363, 273 plug contact (contact pin)

[0179] 39 Disc module

[0180] 4 Electrical cables

[0181] 5 Sensor device

[0182] 50 Electrical connecting cable

[0183] 6 Protective device

[0184] 60 Electrical connecting cable

[0185] 7 Wall

[0186] 8 Earthing wire

[0187] 90, 91 test device

[0188] A Arranging direction

[0189] B Actuating direction

[0190] S swivel axis

[0191] X Plug direction

Claims

Patent claims 1. Test plug-in system (1), comprising an operating part (2) which can be connected to a first electrical connecting line (50) for connection to a sensor device (5) and to a second electrical connecting line (60) for connection to a protective device (6), wherein the operating part (2) has a first plug-in section (21), a first connection module (26) assigned to the first electrical connecting line (50), and a second connection module (27) assigned to the second electrical connecting line (60), wherein the first connection module (26) has an arrangement of first contact elements (263) and the second connection module (27) has an arrangement of second contact elements (273), wherein the first contact elements (263) and the second contact elements (273) make electrical contact with one another in an operating position for electrically connecting the first electrical connecting line (50) and the second electrical connecting line (60),and a test plug (3) which has a plug-in connection with the first plug-in section, (21) of the operating part (2), wherein the test plug (3) is not connected to the operating part (2) in the operating position and is connected to the operating part (2) in a test position, wherein the test plug (3) has a third connection module (36) that can be plugged into the first connection module (26) and / or a fourth connection module (37) that can be plugged into the second connection module (27) for connecting the test plug (3) to at least one test device (90, 91), wherein the test plug (3) has a separating device (310) that is designed to electrically separate the first contact elements (263) of the first connection module (26) of the operating part (2) and the second contact elements (273) of the second connection module (27) of the operating part (2) from one another in the test position, characterized in that the operating part (2) has a closure element (22) which is arranged captively on the operating part (2) and is movable on the operating part (2) between a first position in which the closure element (22) covers the first plug-in section (21), and a second position in which the closure element (22) releases the first plug-in section (21) for plug-in connection with the second plug-in section (31) of the test plug (3).

2. Test plug system (1) according to claim 1, characterized in that the operating part (2) has a housing, wherein the closure element (22) is movably connected to the housing.

3. Test plug system (1) according to claim 2, characterized in that the closure element (22) is slidably or pivotably connected to the housing.

4. Test plug-in system (1) according to one of claims 1 to 3, characterized in that the operating part (2) has a first housing part (20) which has a trough shape delimited by a base (200A) and side walls (200B) and encloses the first connection module (26) and the second connection module (27).

5. Test plug system (1) according to claim 4, characterized in that the operating part (2) has a second housing part (23) which is connected to the first housing part (20) and which forms the first plug section (21).

6. Test plug system (1) according to claim 5, characterized in that the closure element (22) is movably connected to the second housing part (23).

7. Test plug system (1) according to one of claims 4 to 6, characterized in that the first housing part (20) is formed in one piece.

8. Test plug system (1) according to one of claims 4 to 7, characterized in that the first housing part (20) is formed from a metal material or a plastic material coated with a metal material.

9. Test plug system (1) according to one of claims 4 to 8, characterized in that the first housing part (20) is connected to an earthing line (8).

10. Test plug system (1) according to one of the preceding claims, characterized in that the operating part (2) has a first connection (24, 24') via which the first electrical connecting line (50) can be connected to the operating part (2), and a second connection (25, 25') via which the second electrical connecting line (60) can be connected to the operating part (2).

11. Test plug system (1) according to claim 10, characterized in that the first connection (24, 24') and the second connection (25, 25') are each formed by a plug connector or by a cable gland.

12. Test plug system (1) according to one of the preceding claims, characterized in that the test plug (3) has a third connection (32) assigned to the third connection module (36) for connecting to a first test device (90) and / or a fourth connection (33) assigned to the fourth connection module (37) for connecting to a second test device (91).

13. Test plug-in system (1) according to one of the preceding claims, characterized in that the third connection module (36) is designed to make electrical contact with the first connection module (26) when the test plug (3) is plugged into the operating part (2) before the isolating device (310) electrically separates the first contact elements (263) and the second contact elements (273) from one another, and / or that the fourth connection module (37) is designed to make electrical contact with the second connection module (27) when the test plug (3) is plugged into the operating part (2) before the isolating device (310) electrically separates the first contact elements (263) and the second contact elements (273) from one another.

14. Test plug system (1) according to one of the preceding claims, characterized in that the operating part (2) can be connected to a wall (7) without tools.

15. Test plug system (1) according to one of the preceding, characterized in that the operating part (6) has an elastically movable locking element (204) which is designed to lock the operating part (2) to a wall (7).

16. Test plug system (1) according to claim 15, characterized in that the operating part (2) has a housing flange (205) for contact with the wall (7), wherein the elastically movable locking element (204) is arranged relative to the housing flange (205) such that the wall (7) can be received between the housing flange (205) and the locking element (204).

17. Test plug-in system (1) according to one of the preceding claims, characterized in that the first connection module (26) comprises a first arrangement of Connection terminals for connecting first electrical conductors (240) for electrically connecting the first connection assembly (26) to the first connecting line (50), and the second connection assembly (27) has a second arrangement of connection terminals for connecting second electrical conductors (250) for electrically connecting the second connection assembly (27) to the second connecting line (60).

18. Test plug-in system (1) according to claim 17, characterized in that the connection terminals of the first connection assembly (26) each have a first current bar (260) and a first spring element (261) for electrically contacting a first conductor (240) with the first current bar (260) and the connection terminals of the second connection assembly (27) each have a second current bar (270) and a second spring element (271) for electrically contacting a second conductor (250) with the second current bar (270).

19. Test plug-in system (1) according to claim 18, characterized in that a first contact element (263) is connected to each first current bar (260) and a second contact element (273) is connected to each second current bar (270).

20. Test plug-in system (1) according to one of claims 17 to 19, characterized in that the connection terminals of the first connection module (26) and the second connection module (27) have first plug contacts (265, 275) for plugging in contact with second plug contacts (363, 373) of the third connection module (36) and / or the fourth connection module (37) when the test plug (3) is plugged in to the operating part (2).

21. Test plug-in system (1) according to one of claims 17 to 20, characterized in that the operating part (2) has a plurality of first disc modules (29) arranged in a row along a row direction (A), wherein a connection terminal of the first connection module (26) and a connection terminal of the second connection module (27) are arranged on each first disc module (29).

22. Test plug-in system (1) according to one of the preceding claims, characterized in that the third connection module (36) has a third arrangement of connection terminals for connecting third electrical conductors (320) for electrically connecting the third connection module (36) to a first test device (90) and / or the fourth connection module (37) has a fourth arrangement of Connection terminals for connecting fourth electrical conductors (330) for electrically connecting the fourth connection assembly (37) to a second test device (91).

23. Test plug-in system (1) according to claim 22, characterized in that the connection terminals of the third connection module (36) each have a third current bar (360) and a third spring element (361) for electrically contacting a third conductor (320) with the third current bar (360) and / or the connection terminals of the fourth connection module (37) each have a fourth current bar (370) and a fourth spring element (371) for electrically contacting a fourth conductor (330) with the fourth current bar (370).

24. Test plug system (1) according to claim 22 or 23, characterized in that the test plug (3) has a plurality of second disc modules (39) arranged in a row along a row direction (A), wherein a connection terminal of the third connection module (36) and / or a connection terminal of the fourth connection module (37) is arranged on each second disc module (39).

25. Test plug system (1) according to one of claims 22 to 24, characterized in that the connection terminals of the third connection module (36) and / or the fourth connection module (37) have second plug contacts (363, 373) for plugging in contact with first plug contacts (265, 275) of the first connection module (26) and / or the second connection module (27) when the test plug (3) is plugged in to the operating part (2).

26. Test plug system (1) according to one of the preceding claims, characterized in that the separating device (310) is formed by a plurality of separating mandrels.

27. Test plug system (1) according to one of the preceding claims, characterized in that the operating part (2) has a sealing device for securing the closure element (22) in the first position.

28. Test plug system (1) according to one of the preceding claims, characterized in that the test plug (3) has at least one locking element (34) for locking with the operating part (2) in the test position.

29. Test plug system (1) according to claim 28, characterized in that the at least one locking element (34) is elastically deflectable relative to a housing part (30) of the test plug (3).

30. Test plug system (1) according to claim 28 or 29, characterized in that the at least one locking element (34) is integrally connected to the housing part (30) of the test plug (3).

Images