EP2606535A1 - Electrical wall bushing terminal - Google Patents

Abstract

An electrical wall bushing terminal (1) having a housing (2) and having a contact device (3) on which a plug zone (4) is provided for holding a test and/or disconnecting plug (5). A first conductor connection (6) is provided, and is connected to a first contact unit (7) of the contact device (3). A second conductor connection (8) is connected to a second contact unit (9) of the contact device (3). The housing (2) has insertion openings (12, 13) on two sides (10, 11), of which in each case one test and/or disconnecting plug (7) can be inserted into the plug zone (4) in order to make contact with the first and second contact units (7, 9).

Description

 Electrical wall feed-through terminal

The present invention relates to an electrical

Wall feed-through terminal with a housing and with a

Contact device on which at least one plug-in zone for receiving a test and / or disconnect plug is provided. In this case, a test plug or a disconnect plug or a test and disconnect plug can be inserted into the plug-in zone. It is also possible that the test and / or

Isolating plug acts as a short-circuit plug.

There are a variety of electrical in the art

Wall bushing clamps have become known, which have a plug-in zone for receiving a test and / or disconnect plug.

Often, such wall feed-through terminals as

Terminal blocks or Prüfklemmenblock executed and have conductor connection elements and associated current bar, wherein the conductor connection elements contact touching in a contact area, if no test plug has been introduced.

Such wall feed-through terminals with separation options are often used in the switching, measuring and control technology. Due to the possibility of disconnecting the electrical terminal block by inserting different plugs or

Separating plug different functions and different test options can be realized. In particular, test plugs can also be used as plugs in addition to simple isolating plugs or through connectors. Such

Test plugs can have special components that verify the proper functioning of the

Wall feed-through terminal connected circuit

enable. Optionally, by different

CONFIRMATION COPY Test plug different functions simultaneously or successively verifiable.

If the wall feed-through terminals as electrical

Terminal block are disk-shaped, they can with several other electrical terminals to a

Terminal block be plugged together. In such a terminal block can then one of the number of

Terminal blocks corresponding number of test plugs

be plugged in. It is possible that one

 Test plug block is formed, the total in the

Terminal block is inserted.

With the DE 10 2006 052 894 AI a Prüfklemmenblock of electrical terminal blocks has become known at each terminal a Einsteckzone for inserting a

PrüfSteckers has. In this known terminal block are at the plug-in zone for receiving the contact plug two

Contact areas are formed, which are formed from Kontaktschenkein, wherein the contact legs in the first

Touch contact area in the ground state while the

Contact legs are spaced apart in the second contact area. The second contact area is at

Insert a test plug from the disconnect plug first. When inserting a PrüfSteckers this first contacted the second contact area and provides a

Test connection. Only on further insertion

the test plug contacts the first contact area and urges the resiliently abutting contact legs apart.

By means of this embodiment, it is ensured with such a terminal that the test plug first establishes contact with the second contact area before the electrical connection is disconnected at the first contact area becomes. The known state of the art works reliably.

Often it is not necessary to open the control cabinet during inspection or maintenance work on enclosures or enclosures of electrical systems in order to carry out a test. In many cases, it is sufficient if, for example, a wall feed-through terminal as a terminal with a

Insertion zone for a test plug from the outside to the

Control cabinet is accessible to inexpensively change the state of the electrical by inserting a test plug

Circuit to check. In such cases, it is very advantageous if such a wall bushing clamp is mounted accessible on the outside of the cabinet. The disadvantage of this is that in other more extensive or basic testing and / or maintenance provided with a plug-in zone for a test plug

Wall feed-through terminal is arranged on the outside of the housing of the cabinet, even if the cabinet is open. As a result, the maintenance effort increases when the door of the cabinet has to be opened, since the maintenance person must then always plug the test plug from the outside of the cabinet, even if he performs a lot of maintenance work inside the cabinet

Switch cabinet must do.

It is therefore an object of the present invention to provide a wall feed-through terminal with a plug-in zone for a test and / or disconnect plug available, which works reliably and allows less effort in the performance of maintenance.

This task is performed by an electric

Wall bushing clamp solved with the features of claim 1. Preferred developments are the subject of Sub-claims. Further advantages and features of the invention will become apparent from the embodiment.

The electrical wall feed-through terminal according to the invention has a housing and a contact device, on which at least one plug-in zone is provided for receiving a test and / or disconnect plug. The inventive

electrical wall feed-through terminal has a first conductor connection, which is connected to a first contact unit of the contact device. Furthermore, at least one second conductor connection is provided, which is connected to a second contact unit of the contact device. The housing has insertion openings on at least two sides, of which in each case at least one test and / or disconnect plug can be inserted into the at least one plug-in zone for contacting the first and second contact unit.

The electrical wall feed-through terminal according to the invention has many advantages, among other things because the housing of the electrical wall feed-through terminal from at least two sides

 Has insertion, at each of which at least one test and / or disconnect plug is inserted to the connected to the electrical wall feed-through terminal

Check the circuit and / or disconnect the electrical circuit.

The inventive electrical connection terminal makes it possible to carry out the maintenance of an electrical circuit, wherein the test and / or disconnect plug can be inserted from two sides into the housing of the electrical connection terminal. For this example, the electrical terminal can be used in the housing wall, so that it is possible to insert the test and / or disconnect plug either from the inside of the cabinet or from the outside into the wall of the cabinet. The electrical wall feed-through terminal offers the possibility of introducing at least two sides of a test and / or disconnect plug into the electrical terminal, wherein each of the first and second

 Contact unit of the contact device of the electrical

Terminal are contactable. Through this

inventive design becomes a flexible

Connection terminal provided, which is inexpensive to use and practically replaces the function of two test terminals, where the space requirement is the same as in a single terminal block from the prior art.

In a preferred embodiment, the insertion openings are provided on opposite sides of the housing. Such a configuration allows the use in the wall of a cabinet or in the door of a cabinet, with subsequently a plug-in zone of the electrical terminal from the outside and wherein the plug-in zone or another plug-in zone is accessible from the inside. This makes it possible when performing maintenance on control cabinets, a test and / or disconnect plug from the outside when closed

Insert the cabinet door or even when the door is open

Insert cabinet door from the inside. That makes it easier

Carrying out of inspection and maintenance work considerably and can also significantly to avoid faulty

Contribute to maintenance. Also the danger of

Accidents at work decrease because the cables to the test and / or disconnect plugs do not have to be guided around an upright cabinet door or the like.

After acceptance and commissioning of a system, at e.g. regular maintenance operations a separation and / or

Test plug conveniently from the outside into the plug-in zone at the

closed cabinet wall plugged in and the state to be checked. On the other hand, during commissioning or during more complex maintenance work, when the

The control cabinet must anyway be opened or is still open, the disconnect and / or test plug can be inserted directly from the inside into the plug-in zone. An elaborate closing of the cabinet door before plugging the separation and / or PrüfSteckers in the plug-in zone can be omitted. As a result, the invention offers considerable advantages both during startup and during later maintenance operations.

For a plugging from the inside, in particular the polarity of the separation and / or test plug is mirrored to

Outdoor use. This requires that the isolating and / or test plug in relation to the test application be connected in mirror-inverted manner to the measuring / test devices by means of test leads to be connected.

It is possible to use a special disconnect and / or test plug for plugging from the inside and the use of a different wired disconnect and / or test plug for plugging in from the outside.

But it is also possible that an electronics is installed in the separation and / or test plug, which automatically detects the plug-in direction and adapts, so that from the outside and inside identical separation and / or test plug can be used. It is also possible to provide the separation and / or test plug with a switch, which is the wiring

according to the insertion from the inside or outside manually or automatically switches.

The same applies to other distribution boxes,

Junction boxes or the like. After opening such a separation and / or test plug can be inserted from the inside while the distribution and / or Prüfstecker is inserted from the outside when the distribution box is closed.

The first contact unit is preferably connected to the first conductor connection via a first current bar.

 Preferably, furthermore, the second contact unit is connected to the second conductor connection via a second current bar. It is also possible that even a third, fourth or fifth conductor connection is provided on an electrical wall feed-through terminal. It is also possible that a plurality of terminals in the form of terminal blocks as a terminal block block as a whole Wanddurchführungsklemmen- are made available, at which then two, three or more conductor terminals are provided. In the case of terminal blocks, it is additionally possible to provide a plug-in facility for at least one transverse bridging in order to set two or more conductor connections to the same potential.

In a preferred development, at least one contact unit has two spatially spaced first and second contact sections. Such a configuration is very advantageous because it can be ensured that when contacting by a test and / or

Disconnect plug first to the first (or second)

Contact portion is made a contact with the inserted plug, while only then the connection between the first and the second conductor terminal at the second (or first) contact portion is separated. As a result, safe and reliable operation is ensured, in particular in the case of sensitive electrical installations and / or in the case of high voltages and / or high-acting currents.

It is particularly preferred that in the ground state, the first and the second contact unit at the first and the second Touch contact section electrically conductive. A ground state is understood here to be the state in which no test and / or isolating plug is inserted into the corresponding plug-in zone. This means that the two contact units in the ground state are separated by two

Contact sections are electrically connected to each other. The two contact sections provide independent

from each other for a reliable electrical connection of the first and the second contact unit and thus of the first conductor connection to the second conductor connection.

This development is particularly advantageous, since thereby the insertion of a test and / or disconnect plug is independent of the order of arrangement of the first and second contact portion. If the test and / or disconnect plug is inserted from the side of the first contact section and, for example, the first contact unit is first inserted, the electrically conductive contact at the second contact section still remains after the contact has been disconnected at the first contact section

maintained. Only with a complete or almost complete introduction of the separation and / or

Test plug, the electrically conductive contact on the second contact portion is separated. At the time of

Separation at the second contact portion but has the separation and / or test plug already reliably the first

Contact section contacted. When introduced from the other side, the same applies in the reverse order when, in the ground state, the first contact unit and the second contact unit at the first and the second

Touch contact section electrically conductive.

Preferably, there is at least one contact unit

at least partially made of a resilient material. Particularly preferably, both contact units exist at least partially and in particular substantially or wholly of one or more resilient materials. But it is also possible if only one contact unit partially made of a resilient material, as by the spring action of this contact unit reliable electrical contact with the other contact unit is possible.

In preferred embodiments, at least one

Contact unit at least one contact leg. Such a contact leg may be formed in particular as a long loop. Since the length of the loop is greater than its width, there is a long loop. The length of the elongated loop is in particular at least 1.5 times and preferably at least twice as large as a width extending transversely thereto.

Such a loop may be formed as a closed or open loop. Possible and preferred

For example, an approximately U- or C-shaped configuration, in which the first and the second contact portion are provided in the two end regions of the "C." By a C-shaped configuration, spaced-apart portions are provided which provide a spatial separation of the first and the second contact section allow the spatial separation of time and place from each other

following separation of the contact sections, in particular in any order depending on the insertion direction.

Particularly preferably, the electrical wall feed-through terminal is designed as an electrical terminal block, in the

Wall feed-through terminal can be inserted from two or more sides of a disconnect and / or test plug and / or shorting plug through the wall of a connection cabinet, for example, in the housing of the terminal. Further advantages and features of the present invention will become apparent from the embodiment, which in the

Below will be explained with reference to the accompanying figures.

Show:

Fig. 1 is a perspective view of a

 wall feed-through terminal according to the invention with inserted test plug;

Fig. 2 is a highly schematic cross section of a

 Panel feed-through terminal; the contact unit of the wall bushing clamp of Fig. 2; the wall feed-through terminal of Figure 1 with a test plug inserted from a first side. the wall feed-through terminal of Figure 1 with a plug inserted from the other side. and; Fig. 6 is a highly schematic plan view of a

 Switch cabinet with inventive

 Wall feed-through terminals.

With reference to the accompanying figures 1 to 6 is in

An embodiment of the inventive electrical wall feed-through terminal 1 explained below, which as electrical terminal block 30 and in particular as

Wall feed-through terminal block 40 is executed. The illustrated in Figure 1 in a perspective view electrical wall bushing terminal 1 is shown here with an inserted test and / or separator 5, which can also be designed as a shorting plug.

The electrical wall feed-through terminal 1 has a housing 2, which consists of an insulating material and the necessary protection and a Berührsicherung for

Conductor connections offers.

FIG. 1 shows a wall feed-through terminal block with a terminal block 31, which has a plurality of terminals

Terminal blocks 30 features. Each terminal 1 of the

Terminal block 31 has a first here

Conductor terminal 6 and a second conductor terminal 8, which are electrically connected to each other in the ground state 14 via the contact device 3.

In the first plug-in state 26 depicted in FIG. 1, the first conductor connection 6 is electrically separated from the second conductor connection 8, since the test and / or release plug 5 is plugged into the plug-in zone 4. Depending on the configuration of the test and / or disconnect plug 5, it is possible, even in the first plug-in state 26 shown in FIG. 1, to establish an electrically conductive connection between the first conductor connection 6 and the second conductor connection 8 via the test and / or isolating plug 5 becomes. In any case, but the direct electrically conductive connection to the

Contacting device 3 canceled by the insertion of the test and / or separator 5.

At the test and / or disconnect plug 5 test connections may be provided, the number per test and / or separator 5 may vary depending on the current requirements. The electrical wall feed-through terminal 1 is mounted on a wall 24, for example, a control cabinet. This makes it possible, both from the side 10 and from the side 11 of the housing 2 of the wall feed-through terminal 1 to lead a test and / or separator 5 in the plug-in zone 4.

In the illustrated embodiment, the

Wall feed-through terminal 1 practically a common

Plug-in zone 4, which is effective for the insertion of the test and / or disconnect plug 5 from both sides 10 and 11 from as it were. The insertion openings 12 and 13 can also be considered as separate Einsteckzonen here

Both are provided with the reference numeral 4 for the sake of simplicity.

The first conductor connection 6 and the second conductor connection 8 and the insertion opening 12 are preferably accessible from one side of the wall 24 and in particular from one side 10 of the housing, while the insertion opening 13 is accessible from the other side 11. Preferably, the

Conductor terminals 6 and 8 and the insertion opening 12 accessible from approximately one direction, opposite to the

Insertion opening 13 is aligned.

The plug-in zone 4 is accessible from both sides of the housing, while the lead terminals 6 and 8 are accessible only from one side. FIG. 2 shows, in an enlarged and highly schematic cross-section, an electrical wall feed-through terminal 1, a conductor 25 being introduced only in the second conductor connection 8. In normal operation, a corresponding conductor 25 is also in the first conductor connection 6

introduced. The first conductor connection 6 is connected to the first contact unit 7 of the contact device 3 via a current bar 15

connected while the second conductor terminal 8 is connected to the second contact unit 9 via a current bar 16. It is also possible that a current bar or both current bars are each an integral part of the respective contact unit. In Figure 3, the first contact unit 7 and the second contact unit 9 are shown in an exploded view, wherein the distance between the two contact units 7 and 9 has been increased so far that the KontaktSchenkel 19 and 20 of the first contact unit 7 and the second

Contact unit 9 no longer touch, but are shown spaced from each other. In addition, the two contact units 7 and 9 were enlarged to the

To explain the function better. In the assembled state, the contact units 7 and 9 are arranged as shown in Figure 2 and the

Contact legs 19 touch each other at the first

Contact section 17 and the contact legs 20 touch each other at the second contact section 18. At the first contact section 17, the contact point 17a of the contact unit 7 and the contact point 17b make contact. At the spaced apart second contact portion 18, the contact point 18a touch the contact unit 7 and the ^"contact point 18b, so that a redundant electrically conductive connection is present.

Both the first contact unit 7 and the second

Contact unit 9 are formed here as a loop 21 and have an elongated approximately C-shaped form whose length is more than twice as large as the width here. At The ends of the "C s" are provided with the contact portions 17 and 18, which are axially spaced from one another as viewed in the two insertion directions

be arranged mirror-symmetrically.

The first contact portion 17 may also be referred to as a rear or inner and the second contact portion 17 may be referred to as a front or outer contact portion when the page 10 is disposed within a control cabinet or distribution box and the side 11 facing outward.

2, in which no test and / or isolating plug 5 is inserted into the plug-in zone 4, the first and second contact units 7 and 9 touch each other at both contact sections 17 and 18. This results in that during insertion a test and / or disconnect plug 5 from the first side 10 or from the second side 11 in the first insertion opening 12 or the second insertion opening 13 each first a contact portion 17 or 18 is contacted. Subsequently, the electrical contact is canceled at this contact portion, while still at the other contact portion of the electrically conductive contact

is maintained until the test and / or disconnect plug has been inserted so far that the contact at the first and second contact portion 17 and 18 is repealed. This function is independent of whether a test and / or disconnect plug 5 is inserted into the first insertion opening 12 or the second insertion opening 13. at

Inserting a test plug into the plug-in zone 4, the plug is first contacted securely and only then the direct electrical connection of the first conductor terminal 6 is lifted with the second conductor terminal 8. It is also possible that more than two insertion openings 12 and 13 are provided, in which when inserting a test and / or disconnect plug first reliable contact with the test and / or separator 5 is made before the contact to the other insertion will be annulled.

Figure 4 shows a cross section through an electrical

Wall feed-through terminal 1 as, on a wall 24th

For example, a junction box, a junction box or a control cabinet is mounted. The electrical wall feed-through terminal is accessible from both sides 22 and 23 of the wall 24. Thus, from the first side 10 or from the second side 11, a test and / or separating plug 5 can be inserted into the insertion opening 12 or 13 in order to carry out a test or maintenance.

FIG. 4 shows the first plug-in state 26 in which the test and / or isolating plug 5 was introduced from the second side 11.

FIG. 5 illustrates the second inserted state 27, in which the test and / or isolating plug 5 is inserted from the first side 10. In FIG. 5, the state is shown

shown, on which the contact tip 29 of the test and / or separator 5, the first contact portion 17 of

 Contact device 3 touched before the electrically conductive connection is released.

FIG. 6 shows a highly schematic plan view of a distributor or junction box shown in section. Here, the rectangular area shown hatched represents a control cabinet 39. In the control cabinet 39, two doors 37 are provided, one of which is open, so that the uncut door opening can be seen. The doors 37 are part of the walls 24 surrounding the interior. In each door 37 a wall feed-through terminal 1 is provided here. In addition, in two other walls 24

Wall feed-through terminals 1 arranged. When the control cabinet is closed, 22 test and / or

Separating plug 5 are introduced via the insertion direction 35 from the outside into the plug-in zone 4, for. Check the condition of the system and the terminals. The persons 32 and 32 shown in solid lines

34 can directly insert separation and / or test plug in the respective wall feed-through terminal 1 from the outside. They do not have to leave their location. The person 33 need not leave their location and go to the location of the person 34 to insert the disconnect and / or test plug in the wall feed-through terminal 1. The person 33 shown with a dashed line can at the open door 37, the separation and / or test plug

also insert directly into the insertion direction 36 from the inside into the wall feed-through terminal 1. This allows a much more flexible handling.

While e.g. during installation, commissioning or more intensive maintenance, the door 37 is open and in particular a running as a separating and test plug test and / or disconnect plug 5 can be inserted from the inside in the wall feed-through terminal 1, it is a person at

closed cabinet door allows the separation and

Plug test plug from the outside, without it being necessary to first open the cabinet.

Overall, the invention provides a wall feed-through terminal 1 with the possibility of connecting a test and / or disconnect plug 5, wherein the test and / or Separating plug 5 from at least two sides can be inserted into the housing 2 of the electrical terminal 1. Here, a high level of security with a simple operation is possible.

The invention provides an electrical connection terminal, which can be used in particular as a terminal block 30 or as a wall feed-through terminal block 40. The connection terminal 1 can be installed in a control cabinet wall and thus offers a barrier-external test area, e.g. for control measurements and an internal cabinet

Test plug-in zone e.g. for commissioning tests or a wiring test available. To mount the wall feed-through terminal in one

To enable wall cutout of the cabinet wall, additional mounting or locking flanges are provided on the housing to clamp the housing 2 to the wall 24 to be fixed or screwed or otherwise secure it.

LIST OF REFERENCE NUMBERS

Electrical wall feed-through terminal 1

Housing 2

Contact device 3

Plug-in zone 4

Test and / or isolating plug 5

First conductor connection 6

First contact unit 7

Second conductor connection 8

Second contact unit 9

Page 10, 11

Insertion opening 12, 13

Ground state 14

Current bars 15, 16

Contact sections 17, 18

ContactSkeleton 19, 20

Loop 21

Wall side 22, 23

Wall 24

Head 25

First plug-in state 26

Second plug-in state 27

Test connection 28

Contact tip 29

Terminal block 30

Terminal block 31

Person 32 - 34

Insertion direction from outside 35

Insertion direction from inside 36

Door 37

Door opening 38

Control cabinet 39

Wall feed-through terminal block 40

Claims

claims 1. Electrical wall feed-through terminal (1) with a  Housing (2) and with a contact device (3) on which at least one plug-in zone (4) for receiving at least one test and / or disconnect plug (5) is provided,  and with a first conductor connection (6) which is connected to a first contact unit (7) of the contact device (3),  and with a second conductor connection (8), which is connected to a second contact unit (9) of the contact device (3),  characterized,  in that the housing (2) has insertion openings (12, 13) on at least two sides (10, 11), of which in each case at least one test and / or disconnect plug (5) into the plug-in zone (4) for contacting the first and second contact unit (7, 9) is insertable. 2. Wall feed-through terminal according to claim 1, wherein the  Insertion openings (12, 13) on opposite sides (10, 11) of the housing (1) are provided. 3. wall feed-through terminal (1) according to claim 1 or 2,  wherein the first contact unit (7) via a first current bar (15) to the first conductor terminal (6) is connected and wherein the second contact unit (9) via a second current bar (16) to the second conductor terminal (8) is connected. 4. Wall feed-through terminal (1) according to one of  preceding claims, wherein at least one Contact unit (7, 9) two spatially from each other spaced first and second contact portions (17, 18). Wall feed-through terminal (1) according to one of  preceding claims, wherein in the ground state (14), the first and the second contact unit (7, 9) the first and the second contact portion (17, 18) electrically conductively touch. 6. Wall feed-through terminal (1) according to one of  preceding claims, wherein at least one  Contact unit (7, 9) at least partially  resilient material. Wall feed-through terminal (1) according to one of  preceding claims, wherein at least one  Contact unit (7, 9) at least one contact leg (19, 20), which is in particular formed as an elongated loop (21). Wall feed-through terminal (1) according to one of  preceding claims, which is designed as a terminal block (30) 9. Wall feed-through terminal (1) according to one of  previous claims, which as  Wall feed-through terminal (40) is executed and from both sides (22, 23) of the wall (24) is operable and a separating and / or Prüfstecker is insertable.