DE202018006111U1 - Surge arrester arrangement with pre-assembled and electrically connected surge arresters located in a common housing - Google Patents

Abstract

Surge arrester arrangement in a common housing, pre-assembled and electrically interconnected surge arresters, being provided for direct mounting on a standard busbar system with multiple busbars (1) on the housing coupling-like means for electrical and mechanical connection, said means having spring elements and a latch and the Housing extending in its longitudinal extension over a plurality of busbars (1), characterized in that, at least over a longitudinal extension portion of the housing, this has a width recess (3), such that a free space (4) is formed, which at least one of the surge arrester (2) receives functionally separate electrotechnical component (5).

Description

The invention relates to a surge arrester with located in a common housing, pre-assembled and electrically interconnected surge arresters, being provided for direct mounting on a standard busbar system with multiple busbars on the housing coupling-like means for electrical and mechanical connection, said means spring elements and a latch and the housing extends in its longitudinal direction over the plurality of busbars, according to the preamble of claim 1.

From the DE 10 2004 037 083 A1 is a surge arrester arrangement with an executable as part of a housing carrier plate previously known.

The surge arresters, which are designed in particular for the protection of low-voltage supply systems, are fixed electrically prefabricated on the support plate and are provided with external connection means. The support plate may be part of a housing.

According to the previously known solution coupling means for electrical and mechanical connection are provided for direct mounting on a busbar system with multiple busbars on or in the underside of the carrier plate or the housing at a pitch of the busbar system.

An advantage of the known solution is that an installation of overvoltage protection devices directly to the rail system without external connection cable is possible. This ensures a low connection inductance. During the discharge process, only small inductive voltage drops occur even with the largest surge currents.

The known coupling system requires no auxiliary tools. The mechanical fixing and the electrical contacting of the protective devices is done by locking the contact elements with the busbar system, resulting in short assembly times.

In one embodiment, the coupling-type means comprise spring elements and at least one latching.

Also known is a busbar system according to DE 200 04 593 U1 , The busbar system comprises a plurality of busbars, which can be connected to a reference potential by means of a surge arrester. The system is characterized by an adapter bridge, which can be placed transversely on the busbar and which has a shock-current-resistant contact for contacting the busbar and which has at least one slot which comprises at least one plug contact that is electrically connected to the contact of the busbar. A surge arrester is designed as a plug-in module for the corresponding receptacle in the slot of the adapter bridge and has at least one mating contact engageable with the mating contact and also a reference potential terminal, which is connectable to the reference potential of the system.

In known hat rail systems, the mechanical locking takes place via a suitable locking system. The corresponding mechanical dimensions of DIN rails are standardized. Likewise, there is a standardized spatial extent of electrical components that can be accommodated by means of DIN rail system, for example in a service connection box and mechanically fixed there.

Other devices such as fuses, counter inserts, RCD, circuit breaker or the like can also be mounted side by side on the DIN rails. A connection of the corresponding electrical components is usually done by cable or by comb rails.

Surge arrester arrangements with preassembled and electrically interconnected surge arresters in a common housing require assemblies and components which entail considerable housing volume for the corresponding arrester arrangement due to the complexity and the high requirements for overvoltage protection.

If such surge arrester arrangements with corresponding housing and the already mentioned coupling-type means for electrical and mechanical connection are arranged directly on a busbar system, in many cases the remaining space for mounting and for electrically connecting further components on the relevant busbar system is no longer sufficient.

From the foregoing, it is an object of the invention to provide a further developed surge arrester with located in a common housing, pre-assembled and electrically interconnected surge arresters, which is suitable for direct mounting on a standard busbar system with multiple busbars, with a possibility to be created, a space-saving integration and supply of different electrotechnical components in the busbar system. This is intended to eliminate the lack of space in the area of the feed, in particular in the area of home and office building supplies.

The object of the invention is achieved by a surge arrester arrangement according to the feature combination according to claim 1, wherein the dependent claims represent at least expedient refinements and developments.

Accordingly, it is assumed that a surge arrester arrangement with in a common outer housing, prefabricated and electrically interconnected surge arresters. In the housing, other electronic components, such as trigger circuits, remote displays, disconnectors or the like can be accommodated.

The surge arrester arrangement is suitable for direct mounting on a standardized busbar system with a plurality of busbars and thus has on the housing, in particular on the housing bottom, coupling-like means for electrical and mechanical connection. These means have spring elements and a latch. The housing is designed in such a way, for example rectangular or cuboid, that it extends in its longitudinal extent over a plurality of busbars.

According to the invention, this at least over a longitudinal extension section of the housing on this a width recess. The width return is implemented so that it forms a free space, which can accommodate at least one of the surge arrester arrangement functionally separate electrical component.

In a first embodiment, the free space is led to the busbars, so that the relevant electrical component can be directly connected to the busbars and supplied.

In a further development of the invention, the free space has at least one step-shaped shoulder which, as part of the housing, at least partially covers the busbars, as a result of which an electrical insulation to the busbars is created. This isolation can be implemented either via the insulating material of the housing or over a corresponding distance between the electrical component used and the corresponding busbar surface.

In this embodiment, means for securing the electrotechnical component, e.g. a remote display, be provided.

Such a means may comprise, for example, a hat rail-like profile. Accordingly, it would be possible to use such electrical components in the space and fix it, which have on its bottom side clamping or locking means, which are otherwise suitable for direct mounting on a hat rail system. Such agents are well known to those skilled in the art and need not be detailed here.

The electrotechnical components can be designed, for example, as a circuit breaker, as a line safety device, overcurrent protection devices for the control and communication technology, power meter, WLAN adapter, radio module, antenna radiator or the like.

Moreover, according to the invention, a plurality of surge arrester arrangements are arranged side by side on a busbar system, wherein the respective free spaces make it possible to insert the respective electrotechnical component from above into the respective free space. In this case, it is possible, even subsequently, for example in the event of a fault, to replace a corresponding electrotechnical component without it being necessary to remove the corresponding surge arrester arrangement.

Basically, there is the possibility that the electrical components used with the respective housing contour, especially on the top, flush terminate.

Alternatively, however, the electrical component used in each case with respect to the top-side housing structure survive, so that a simple operation or replacement by creating sufficient grip surfaces on the component is possible.

The respective free space may have a shape which is complementary to the contour of the electrotechnical component, so that a spatially geometrically unique and correct assignment is given when introducing the electrotechnical component into the respective free space.

The explained width recess for the formation of the free space may be provided on one side on the housing but also on two opposite sides of the housing.

The invention will be explained below with reference to exemplary embodiments and with the aid of figures.

• 1 und 2 eine Darstellung eines ersten Ausführungsbeispieles der erfindungsgemäßen Lösung mit einem Freiraum, gebildet durch einen Breitenrücksprung im Gehäuse einer Überspannungsableiteranordnung, welcher bis zu den Stromschienen führt, wobei die 1 und 2 verdeutlichen, wie in den Freiraum eine zusätzliche elektrotechnische Komponente einbringbar ist; und
• 3 und 4 eine Darstellung ähnlich derjenigen nach den 1 und 2, jedoch mit dem Unterschied, dass der Freiraum über einen stufenförmigen Absatz verfügt, welcher als Bestandteil des Gehäuses die Stromschienen überbrückt, um eine elektrische Isolation zu der in dem Freiraum einbringbaren elektrotechnischen Komponente zu schaffen.

Hereby show:

• 1 and 2 a representation of a first embodiment of the solution according to the invention with a free space formed by a width recess in the housing of a surge arrester arrangement, which leads to the busbars, wherein the 1 and 2 clarify how an additional electrotechnical component can be introduced into the free space; and
• 3 and 4 a representation similar to that after the 1 and 2 , but with the difference that the free space has a step-shaped shoulder, which bridges as part of the housing, the busbars to provide electrical insulation to the einbringbaren in the free space electrotechnical component.

Both 3 and 4 is a mounting of the electrotechnical component by positive engagement possible by a locking projection is formed in the region of the bottom of the free space, which has, for example, a profile which corresponds to a classic top hat rail. In contrast, the underside of the electrical component has a complementary recess in order to achieve a corresponding connection in mechanical terms.

The figures each include the representation of a busbar system comprising a plurality of individual bus bars formed at a pitch 1 ,

A surge arrester arrangement 2 , which usually has a plurality of internally connected surge arresters in its housing, has coupling-type means (not shown) for electrical and mechanical connection with respect to the bus bars 1 ,

The housing of the surge arrester arrangement 2 extends over several of the busbars with respect to its longitudinal direction 1 , where as a rule a right angle relative to the longitudinal axis is maintained.

Like from the 1 and 2 can be seen, the housing of the surge arrester arrangement 2 a width return 3 on, so that a free space 4 (symbolized with arrow symbol) is formed.

The open space 4 is capable of at least one of the surge arrester arrangement 2 functionally separate electrotechnical component 5 take.

In this electrotechnical component 5 it may be, for example, a circuit breaker, an overcurrent protection device for the control and communication technology, a power meter, a wireless adapter, a radio module or an antenna radiator with or without integrated radio module.

The underside of the electrotechnical component 5 may be provided with means similar to the coupling-type means for electrically and mechanically connecting the surge arrester arrangement to the bus bar system.

Both the actual surge arrester arrangement 2 as well as the electrotechnical component 5 can have a display device 6 who work independently.

The open space 4 preferably has a contour that of the electrical component 5 is complementary in order to create a clear position assignment and to avoid a mis-installation.

Although in the 1 and 2 the width return 3 with free space 4 only shown on the right side, a similar width return can also be left-sided or arbitrary on the housing of the surge arrester 2 be provided.

In the embodiment of the 3 and 4 has the free space 4 over a stepped step 7 ,

The step-shaped heel 7 covers all or part of an underlying section of the busbars 1 , This results in an electrical insulation, due to the insulation material of the surge arrester arrangement 2 and a corresponding distance to the busbars 1 ,

In the area of the step-shaped heel 7 are means for attaching the relevant electrotechnical component 5 available.

For example, these means can be used as a contour 8th be formed, the contour 8th in longitudinal section substantially corresponds to the shape of a known DIN rail.

At the bottom, respectively the bottom side of the electrotechnical component 5 , is in this respect a complementary return 9 available, to a latching or clamping, that is preferably positive but also non-positive fastening of the electrical component 5 in the area of the step-shaped heel 7 using the agent or means 8th to realize.

As is clear from the representations as a result of the synopsis of 3 and 4 can be seen, the electrotechnical component 5 laterally on a medium 8th be deferred, which has a rail-like shape.

It is also possible, a plugging in from above into the free space 4 to accomplish, which is particularly advantageous if there is a series arrangement of several, adjacent surge arrester arrangements on a corresponding busbar system.

The respective electrotechnical component 5 can be related to the free space 4 respectively the width return 3 flush with the largest surface side of the surge arrester assembly 2 but also be realized protruding in this respect, in particular in the case of an exchange of the electrical component 5 allow easy change, and largely tool-free.

Although starting from the envelope of a surge arrester according to 1 to 4 the inner volume of the housing is larger in comparison to an embodiment without clearance and width return to the volume of the space, it surprisingly succeeds in all the necessary Ableiterkomponenten including internal wiring, triggering, display device, thermal separator and other parts selbige in the remaining volume so to accommodate that necessary separation distances are maintained and the functionality of the surge arrester arrangement remains ensured under all circumstances.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102004037083 A1 [0002]
• DE 20004593 U1 [0008]

Claims (11)

Surge arrester arrangement in a common housing, pre-assembled and electrically interconnected surge arresters, being provided for direct mounting on a standard busbar system with multiple busbars (1) on the housing coupling-like means for electrical and mechanical connection, said means having spring elements and a latch and the Housing extending in its longitudinal extension over a plurality of busbars (1), characterized in that, at least over a longitudinal extension portion of the housing, this has a width recess (3), such that a free space (4) is formed, which at least one of the surge arrester (2) receives functionally separate electrotechnical component (5). Surge arrester arrangement according to Claim 1 , characterized in that the free space (4) leads up to the busbars (1), so that the electrotechnical component (5) is connectable to these. Surge arrester arrangement according to Claim 1 , characterized in that the free space (4) has a stepped shoulder (7), which covers as part of the housing, the busbars (1), whereby an electrical insulation to the busbars (1) is provided. Surge arrester arrangement according to Claim 3 , characterized in that means (8) for fixing the electrotechnical component (5) are provided in or on the stepped shoulder (7). Surge arrester arrangement according to Claim 4 , characterized in that the means is designed as a dovetail-like profile (8). Surge arrester arrangement according to one of the preceding claims, characterized in that the electrotechnical component (5) as a circuit breaker, automatic circuit breaker, overcurrent protection device for the control and communication technology, power meter, wireless adapter, radio module and / or antenna radiator or the like device is formed. Surge arrester arrangement according to one of the preceding claims, characterized in that a plurality of such arrangements on the busbar system are arranged adjacent to each other, wherein the respective free spaces (4) allow insertion of the respective electrical component (5) from above into the free space (4). Surge arrester arrangement according to one of the preceding claims, characterized in that the electrotechnical components (5) used terminate flush with the respective housing contour on the top side. Surge arrester arrangement according to one of Claims 1 to 7 , characterized in that the electrical components used (5) with respect to the upper-side housing contour survive, to allow easy operation or a simple exchange. Surge arrester arrangement according to one of the preceding claims, characterized in that the respective free space (4) has a shape which is complementary to the contour of the electrotechnical component (5), so that a spatially geometrical clear and correct assignment during introduction of the respective electrotechnical component (5 ) is given in the respective free space (4). Surge arrester arrangement according to one of the preceding claims, characterized in that the width recess (3) for forming the free space (4) is provided on both sides of the housing.

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