Contact protection arrangement for a busbar system having a current supply

Abstract

The invention relates to a contact protection arrangement (1) for a busbar system, the arrangement comprising a contact protection housing (2) made of electrically insulating material, the contact protection housing (2) having a plurality of receptacles (3) with busbars (4) arranged therein and a cover (5), which covers the receptacles (3), for mounting connection adapters, the cover (5) having, for each receptacle, at least one row of through-openings (6) which open into the corresponding receptacle (3), characterised in that the contact protection housing (2) has a current supply module (20) in which a bar end (21) of each of the busbars (4) is arranged, the current supply module (20) electrically contacting each bar end (21) with a corresponding conductor connection terminal (22).

Description

[0001] Touch protection arrangement for a busbar system with power supply

[0002] The invention relates to a touch protection arrangement for a busbar system, comprising a touch protection housing made of electrically insulating material, wherein the touch protection housing has several receptacles with busbars arranged therein, as well as a cover covering the receptacles for mounting connection adapters. The cover has at least one series of through-openings for each receptacle, which open into the respective receptacle. The touch protection housing further comprises a power supply module. Such an arrangement is known from the subsequently published DE102024111057.

[0003] In DE102024111057, the busbars pass through the power supply module. This makes this power supply less suitable if the touch protection device is to be mounted vertically, for example in a control cabinet enclosure, i.e., with vertically oriented busbars. In this case, it is preferable to have the power supply at one of the opposite end faces of the touch protection device, for example at an upper end of the device, since the power supply is usually provided in an upper area of ​​the control cabinet interior.

[0004] Busbars are used, for example, to conduct or supply electrical current in control cabinets. To prevent accidental contact with live busbars, touch protection systems are typically used. In these systems, the busbars are covered, for example, by a cover. Such systems are known from DE102016107565A1 and EP3766146B1.

[0005] The current carried by the busbars must be supplied to or fed into the busbars. Adapters for current supply are known from the prior art; these are arranged on the cover of the touch protection device and electrically contact the busbar for supplying current. A corresponding adapter is known, for example, from EP 0270996 A2. With these known solutions, the current-supplying adapter thus occupies space on the cover, which is then no longer available for mounting components of an electrical switchgear assembly.

[0006] Another method of power supply is known from EP 3926774 A1. In this method, contact pins are inserted into the rear of the protective cover, opposite the cover. The contact pins are then pushed through the rear of the protective cover into contact holes in the busbar. This requires the busbars to be perforated or slotted, which incurs costs and effort. Furthermore, no device drawing power from the busbar can be mounted at points where the contact pins are in contact with the busbar, as the contact pin occupies the busbar's contact hole.

[0007] EP 2863496 B1 shows contact elements designed as terminals that contact busbars covered with touch protection modules on their outer circumference.

[0008] It is therefore an object of the present invention to overcome these disadvantages and, in particular, to provide a touch protection arrangement that enables end-position current supply at a longitudinal end of the touch protection housing and is also space-saving with regard to the area on the cover of the touch protection housing that can be covered with components. This object is achieved by a touch protection arrangement according to claim 1. The respective dependent claims relate to advantageous embodiments.

[0009] Accordingly, it is provided that the touch protection housing has a power supply module in which a respective busbar end is arranged, wherein the power supply module electrically contacts each busbar end with a respective conductor connection terminal.

[0010] The conductor terminal is not limited to any specific embodiment. For example, it can be designed as a prism terminal. The conductor terminal can have at least two adjustable clamping parts between which an electrical conductor to be connected, for example a round conductor or a flat conductor, can be clamped and electrically connected. An electrical connection can be provided between the conductor terminal and the busbar. For this purpose, the conductor terminal can contact the busbar with an electrically conductive clamping part, at least in one clamping position in which it clamps and electrically connects an electrical conductor. For this purpose, the conductor terminal can rest directly on the busbar with one of its clamping parts, or an additional electrical conductor can be provided. The clamping part can, for example, be a lower part of a prism terminal.An electrical conductor can be clamped between the lower part and an upper part of the prism clamp, which are preferably adjustable relative to each other via a drive.

[0011] Preferably, the conductor terminal is configured to clamp an electrical conductor of a power supply, for example a round or flat conductor, directly or indirectly to one end of a busbar to be contacted. A clamping force provided thereby secures the busbar end in the power supply module. The conductor terminal can press the electrical conductor directly onto the end of the power busbar. Alternatively, the conductor terminal presses against the busbar with an electrically conductive terminal section facing the busbar, whereby the electrical conductor of a power supply is clamped between this terminal section and another terminal section of the conductor terminal, in particular an upper part of the conductor terminal.

[0012] The conductor terminal can have a drive mechanism, for example, a screw drive, in particular a threaded bolt with a tool holder, for example, for a screwdriver. The drive allows the conductor terminal to be adjusted between a contacting position, in which the terminal clamps an electrical conductor of a power supply to the end of the busbar, and a release position, in which the terminal releases the electrical conductor. The drive can have an adjustment direction perpendicular to the cover of the touch-protection housing or to the plane defined by the busbars. In particular, two complementary terminal parts of the conductor terminal, for example, an upper and a lower part of the terminal, such as a prism terminal, can be adjusted relative to each other in the aforementioned adjustment direction.

[0013] The drive may have a tool holder, for example for a screwdriver, which aligns with a tool opening in a housing of the power supply module. The tool opening may have dimensions that do not compromise contact protection, for example in that it is finger-safe and passes the test with a test finger.

[0014] The conductor connection terminal can have an upper and a lower part between which an electrical conductor of a power supply can be clamped. The upper and lower parts can be guided, for example, by a linear guide. The upper and lower parts can be guided perpendicular to the cover with the through-slots or to a plane defined by the busbars. The upper and lower parts can be guided by a drive, for example, a screw drive, or driven along the linear guide. The upper and lower parts can be adjustable relative to each other by the drive. The drive can be configured to provide a clamping force between the upper and lower parts, for example, to clamp an electrical conductor of a power supply between the upper and lower parts.The clamping force can further be designed to fix the electrical conductor directly or indirectly to the end of the busbar. Preferably, at least the lower part is electrically conductive and, at least in one contact position, makes contact with the end of the busbar on a side facing the busbar, while an electrical conductor can contact an opposite side of the lower part, which faces the upper part, and between which and the upper part a clamping force can be provided, preferably via a drive, for example a screw drive.

[0015] The conductor terminal can, preferably completely, be enclosed in a housing of the power supply module made of electrically insulating material. The power supply module can meet the same requirements regarding touch safety as other components of the touch-protection housing.

[0016] The power supply module can have a housing made of electrically insulating material. The housing can be attached to another module of the touch protection housing via a connection, preferably a detachable one. The touch protection housing can have a modular design and, for example, include central modules that are connected and linked together via snap-fit ​​connections.

[0017] The touch protection enclosure can be terminated at opposite longitudinal ends by an end module. The power supply module can replace one of the end modules. Alternatively, the power supply module can replace an end cover of the touch protection enclosure, with the end cover being designed to cover the rail ends that are contacted by the power supply module's conductor connection terminals. For installation, the end cover can be removed and the power supply module mounted in its place. The power supply module can be secured to the rest of the touch protection enclosure using identical or complementary connectors as the end cover or the end module. The end modules and the central modules can together form a touch protection enclosure, which may be made of an electrically non-conductive plastic material.The power supply module can replace one of the end modules and, together with the central modules and, if necessary, other modules, form the touch protection housing.

[0018] The touch-protection enclosure securely houses busbars, which are accessible from the front of the enclosure via contact openings designed as contact points for electrical devices and adapters. Suitable device adapters and contact terminals are described, for example, in EP 3258558 B1. Alternatively, the touch-protection enclosure can be of a single, non-modular design. In particular, the power supply module can also be integrated with other modules of the touch-protection enclosure.

[0019] The cover of the touch protection housing can be removable from the base or permanently attached to it. The busbars are mounted in recesses in the base. The cover closes the recesses on the front of the touch protection housing, through which adapters and / or electrical components can be connected to the busbars.

[0020] The at least one additional module can have the cover with the through-holes. The power supply module can have a top surface flush with the cover, which preferably extends the mounting level for components formed by the cover. The top surface can have further through-holes. The through-holes in the top surface can be identical to the through-holes in the cover, preferably maintaining a grid dimension matching the through-holes in the cover. The power supply module is preferably designed to be touch-proof, including the further through-holes in the top surface and, optionally, openings for the insertion of electrical conductors from a power supply. In addition to the power supply module, the touch-proof housing can have at least one and preferably several further modules, which are designed as separate components.The at least one additional module and the power supply module can be mechanically connected in series along the busbars. For this purpose, they can have complementary connection connectors, preferably snap-fit ​​and / or positive-lock connectors, on their facing end faces.

[0021] The power feed module can have a positive-locking receptacle for each busbar end to accommodate the respective busbar end. These positive-locking receptacles can preferably be limited in the longitudinal direction of the respective busbar by a stop. The stops can be removable, in particular breakable, if it is necessary to allow the busbars to pass through the positive-locking receptacles and thus through the power feed module. The positive-locking receptacles simplify the reliable positioning of the busbar ends with respect to the conductor connection terminals. Further simplification is achieved by means of the stop.

[0022] At least one of the conductor terminals can have an electrically conductive contact element for the electrical and mechanical contact of an electrical conductor, which is preferably adjustable with respect to one of the rail ends. The adjustability can be achieved by means of a drive mechanism. The drive mechanism can be a screw drive. The electrically conductive contact element can be one of the upper and lower parts of a multi-part conductor terminal, for example, a prism terminal. The contact element can thus have one or more features of the upper part and / or the lower part already described.

[0023] The electrically conductive contact element can make electrical contact with the rail end when in a position close to it and be out of contact with it when in a position further away. The conductor terminal can be configured to move the electrically conductive contact element from the position further away to the position closer to it when clamping an electrical conductor of a power supply.

[0024] The electrically conductive contact element, when positioned close to the end of the busbar, can clamp the busbar end in a positive-locking receptacle of the power supply module that is open to the contact element. The positive-locking receptacle can be open on one side facing the conductor terminal, particularly the electrically conductive contact element. On this side, the busbar inserted into the positive-locking receptacle is exposed and can be contacted by the conductor terminal or the electrically conductive contact element. The conductor terminal can be adjustable perpendicular to the open side of the positive-locking receptacle, for example, by means of a drive mechanism, such as a screw drive or a threaded bolt with a tool holder. The busbar end does not need to be positively locked along its entire circumferential surface.A section-by-section form-locking system may be sufficient to achieve a defined positioning of the rail end in relation to the power supply module in the plane spanned by the busbars.

[0025] The electrically conductive contact element can have an upper and a lower part, at least the lower part facing the busbar end being electrically conductive. The upper and lower parts can be adjustable relative to each other. Preferably, the upper and lower parts are connected to each other via an elastic element, so that they are held together by a preload force. The elastic element can be, for example, a rubber band or a spring element, such as a coil spring or a leaf spring. This can prevent the busbar ends from colliding with the conductor terminals when the power supply module is subsequently mounted on the touch-protection housing. The preload force provided by the elastic element is so low that the upper and lower parts can be easily detached manually to insert a conductor end of an electrical supply between them.

[0026] The lower part, in the position where the contact element is closest to the rail end, can make contact with the rail end and establish an electrical connection between the electrical conductor and the rail end. In this near position, a clamping force is preferably also provided, which can clamp the conductor end of an electrical power supply between the upper part and the lower part.

[0027] The same clamping force can also act on the rail end, particularly between the lower part and the rail end, thus ensuring secure contact between the lower part and the rail end. In modular designs of the touch protection housing, the clamping force between the lower part and the rail end can also contribute to fixing the power supply module to the rest of the touch protection housing. The at least one conductor connection terminal can have a linear guide. Along this guide, the electrically conductive contact element, preferably at least one of the upper and lower parts of the contact element, and more preferably both of these, can be adjustable relative to the rail end. The electrically conductive contact element can preferably be guided perpendicular to the cover.

[0028] The electrically conductive contact element can be adjustable relative to the rail end via a drive mechanism. Preferably, an upper and a lower part of the electrically conductive contact element can be adjustable relative to each other via a drive mechanism.

[0029] The power supply module can be arranged at one longitudinal end of the touch-proof enclosure with respect to the longitudinal direction of the busbars. This arrangement is preferred for end-face power supply into the touch-proof enclosure. In this arrangement, the electrical conductors of a power supply, e.g., round or flat conductors, are inserted into the power supply module perpendicular to the free end face. Thus, the electrical conductors of the power supply can extend parallel to the busbars within the touch-proof enclosure.If the touch protection enclosure is mounted vertically inside a control cabinet enclosure, with the power supply module positioned at the front end of the enclosure and the power supply lines running horizontally in the upper part of the enclosure, the electrical conductors supplied to the power supply module from the power supply lines can be straight. This is particularly advantageous when large-diameter conductors need to be connected to the power supply module for high currents.

[0030] At least one electrical conductor can be inserted into the power supply module through a side of the power supply module that closes off the end of the touch-protection housing and be connected to one of the conductor terminals. The power supply module can have a housing made of electrically insulating material. The side of the power supply module that closes off the end of the touch-protection housing can have a conductor entry opening. The conductor entry opening can have a baffle with an adjustable opening cross-section. The baffle preferably has at least two baffle elements connected to each other via a predetermined breaking point and limiting the opening cross-section, and / or at least two baffle elements adjustable relative to each other and limiting the opening cross-section between them.

[0031] If the conductor entry opening has an adjustable cross-sectional area, the area of ​​this opening can also be adjustable. The cross-sectional area can be the largest continuous surface of the conductor entry opening suitable for the passage of a conductor.

[0032] If the conductor entry opening has an adjustable opening cross-section, the opening cross-section can, for example, be adapted to the cross-section of an electrical conductor connected to the power supply module, or at least approximated to the cross-section of the electrical conductor to such an extent that the connection of the power supply module is touch-proof, for example, at least to the extent that the test with a test finger is passed in accordance with the applicable standard.

[0033] The adjustable size of the opening cross-section can be achieved in various ways. For example, it can be provided by a movable element. This movable element can, for instance, engage the opening cross-section to an adjustable extent and / or cover and / or close it.

[0034] The movable element can have at least two holding positions and preferably a plurality of holding positions. The movable element can be fixed in the holding positions. Preferably, the movable element has a detent position in the holding positions. Preferably, the movable element is at least one slide. The movable element can have at least two independently adjustable slides. The at least two slides can also be coupled and move in the same direction. The at least two slides can be arranged side by side or one behind the other in their direction of adjustment. In particular, if the at least two slides are arranged one behind the other in their direction of adjustment, the slide furthest behind in the direction of adjustment can be configured to drive the slide furthest ahead in the direction of adjustment.For this purpose, the rear slider (in the adjustment direction) can have a protruding edge resting against a rear side or edge (in the adjustment direction) of the front slider (in the adjustment direction). Alternatively or additionally to the slider, the movable element can be or include an adjustable iris diaphragm.

[0035] The movable element can have a straight or a contoured edge, with which the movable element, in particular a slider, limits the opening cross-section. The movable element can have different holding positions, in which it limits the opening cross-section of the conductor entry opening to varying degrees. The movable element can have a straight edge or a curved edge, for example, an edge with a contour corresponding to a segment of a circle. The contour of the edge can be selected according to the geometry of the electrical conductor connected to the terminal. The contour of the edge can correspond to the geometry of the conductor or approximate it. A positive fit is not required. The edge can be at least partially elastic to promote a positive fit with the electrical conductor when the edge comes into contact with it.

[0036] The conductor entry opening can have at least one movable element, in particular a slide, that limits the opening cross-section. The movable element preferably has at least two holding positions, and more preferably at least two detent positions. Most preferably, the movable element has a plurality of detent positions, thereby achieving variable adjustment of the opening cross-section.

[0037] The movable element can preferably be adjustable in a plane parallel to the opening cross-section. The movable element can be a slider, which is preferably displaceable in a plane parallel to the opening cross-section.

[0038] The slider can project into the opening cross-section with a protruding edge, the edge preferably being curved or straight at least in sections.

[0039] The power supply module can have a slide holder with respect to which the slide is displaceable and with respect to which the slide preferably has at least one holding position and, more preferably, a plurality of holding positions. The power supply module can have a housing surrounding the conductor entry opening and exposing the opening cross-section, with an insertion opening for the slide holder.

[0040] The slide holder can be inserted into the insertion opening in an insertion direction that extends parallel to the opening cross-section. The slide holder is preferably guided in the insertion direction within the insertion opening. Particularly preferably, the slide holder is guided in the insertion direction by a tongue-and-groove connection formed between the housing and the slide holder. The slide holder can have at least two mutually opposed holding positions in the insertion opening, for example, at least two detent positions, and particularly preferably a plurality of holding positions or detent positions. The conductor insertion opening can have at least two movable elements, preferably slides, that define the opening cross-section and are independently adjustable in the same direction.

[0041] The two movable elements, preferably sliders, can be arranged one behind the other in their common adjustment direction. A conductor opening can be formed between the two sliders. The cross-sectional area of ​​this opening can be determined by the holding position of the two sliders relative to each other.

[0042] The power supply module can have a base made of electrically insulating material with mountings for busbars and a cover made of electrically insulating material that covers the base. The mountings, which can be designed as positive-locking receptacles, can each lead into one of the conductor connection terminals.

[0043] Between opposing end faces of the power supply module, passage channels for busbars can extend through the module. For this purpose, the openings can be designed as channels permeable in the longitudinal direction of the busbars.

[0044] The cover of the power supply module can have a preferably flat cover plate with a number of rows of regularly spaced through slots corresponding to the number of busbars to be contacted.

[0045] The power supply module can have a base and a cover over the base, with a mounting side for electrical components of the switchgear construction, featuring regularly spaced through-slots. A single- or multi-pole busbar adapter for electrically contacting the busbars held in the receptacles can be mounted on this. The multi-pole busbar adapter can extend through the through-slots in the cover with one contact element for each busbar to be electrically contacted. Alternatively, the busbar adapter can extend through the through-slots in the cover with hook-shaped retaining feet. These hook-shaped retaining feet can be designed to grip the busbars held in the receptacles.

[0046] Both the power supply module and the touch protection housing can have a connecting connector on at least one of their two opposite end faces, via which the power supply module and the at least one touch protection housing are detachably connected to each other.

[0047] The power supply module and the remaining touch protection enclosure can each have recesses extending between their respective opposite end faces in the form of busbar feed-through channels for the passage of busbars through the power supply module and the remaining touch protection enclosure, with each feed-through channel of the power supply module opening into a feed-through channel of the touch protection enclosure. If the power supply module is end-positioned, preferably the end face facing away from the remaining touch protection enclosure is closed to provide reliable touch protection. This can be achieved using a one-piece closed enclosure wall or by means of lockable conductor entries, for example, conductor entries with an adjustable opening cross-section, as described above for the end-face power supply.

[0048] The at least one busbar can extend uninterrupted through the intersecting passageways between the power supply module and the at least one touch protection housing.

[0049] Further details are explained with reference to the figures below. The embodiments shown in the figures have features that, individually or in any combination, can be suitable for realizing embodiments of the invention. These show:

[0050] Figure 1 in perspective view shows an exemplary embodiment of a touch protection module according to the prior art in a partially exploded view; Figure 2 in perspective view shows an exemplary embodiment of a touch protection arrangement, with the housing of the power supply module removed;

[0051] Figure 3 shows a perspective view of the front face of an exemplary embodiment of a touch protection arrangement;

[0052] Figure 4 shows an exemplary embodiment of a contact protection arrangement in perspective; and

[0053] Figure 5 shows an exemplary embodiment of an aperture for a power supply module.

[0054] The touch protection arrangement 1 shown in Figure 1, according to the prior art, has a modular design and essentially consists of two central modules 16, which are connected to each other via a snap-fit ​​connection 14 and terminated at opposite longitudinal ends by an end module 15. The end modules 15 and the two central modules 16 together form the touch protection housing 2 of the touch protection arrangement 1, which, in a manner known from the prior art, can be made, for example, of an electrically non-conductive plastic material. Three busbars 4 are mounted in the housing 2 in a touch-proof manner in receptacles 3 and are accessible from the front of the housing 2 via through-openings 6 for electrical devices and adapters. Corresponding device adapters and contact terminals are described, for example, in EP 3258558 B1. Alternatively, the housing 2 can be of a single, non-modular design.The cover 5 can be removable from the base 19 or permanently connected to it. The busbars 4 are received in receptacles 3 of the base 19. The cover 5 closes the receptacles 3 on the front of the touch guard 1, through which adapters and / or electrical components can be connected to the busbars 4. The base 19 forms a tray 9 which contains the receptacles 3. The tray 9 is completely covered and sealed by the cover 5.

[0055] The end modules 15 have an end cap 17 and a central module extension 18. All connections 14 are designed as identical snap-fit ​​connections, allowing for any combination, particularly between the central modules 16 and the central module extensions 18. For example, to adapt the touch guard 1 shown to a given horizontal mounting plate width, the central module extensions 18 can be removed and the end caps 17 snapped directly onto the central modules 16. It is also possible to connect one or more additional central modules 16 between the two central modules 16 shown.

[0056] The busbars 4 housed in the touch-protection enclosure 2 are designed as flat busbars with two pairs of parallel outer faces that form a rectangular cross-section perpendicular to the longitudinal direction of the busbar 4. The cross-section is constant over the entire length of the busbar 4. Such busbars 4 can be manufactured cost-effectively by extrusion.

[0057] Instead of one of the end caps 17 and / or the central module extensions 18, a power supply module according to Figure 2 can be provided. The power supply module can be designed identically with respect to the compatibility of the connection technology between the individual modules of the touch protection housing described above, in particular having a snap connection complementary to the snap connections 14, which, for example, allows it to be connected in series to a central module 19 or a central module extension 18.

[0058] In the embodiment shown in Figure 2, the power supply module 20 is arranged at its end position relative to the touch protection housing 2, in particular at one end face of the touch protection housing 2. The power supply module 4 has conductor connection terminals 22 corresponding to the number of busbars 4. The busbars 4 project into the power supply module 20 with their free ends 21. Figure 2 shows the power supply module 20 in a position where the conductor connection terminals 22 are in such a position that the busbar ends 21 are not in contact with the conductor connection terminals 22, at least insofar as no sufficiently current-carrying connection has yet been established between the conductor connection terminal 22 and the respective busbar end 21.

[0059] The connection of an electrical conductor 100 of a power supply is shown with reference to Figure 3 and is effected such that an electrical conductor 100 of a power supply is fed from the end face of the touch-protection housing 2 facing away from the busbars 4 to one of the conductor connection terminals 22. In the embodiment according to Figures 2 and 3, the conductor connection terminals 22 are designed as prism terminals with an upper part 29 and a lower part 30. An insulator-free end of the electrical conductor 100 can be received, electrically contacted, and held between the upper part 29 and the lower part 30. For this purpose, the upper part 29 and the lower part 30 can be spaced apart from each other against a preload provided by an elastic element 25, in this case a rubber band.The elastic element 25 is intended in particular to prevent the lower part 30 from engaging in the positive locking receptacle 26 for the busbars 4 in the position of the conductor connection terminal shown in Figures 2 and 3, and thus prevent the busbars 4 from being inserted into the positive locking receptacle 26 in a process-reliable manner.

[0060] The conductor terminal 22 has an actuator 28, which in this case is designed as a screw drive. By actuating the dust drive 28, in particular by screwing in a thread of the actuator 28, the upper part 29 and the lower part 30 with the electrical conductor 100 arranged between them can be moved towards the rail end 21 until the conductor terminal 22 with its lower part 30 rests on the rail end 21. With the aid of the actuator 28, a clamping force can be provided with which, on the one hand, the electrical conductor 100 between the upper part 29 and the lower part 30 is clamped and, on the other hand, the lower part 30 is clamped on the rail end 21, so that a frictional and, on the other hand, an electrically conductive connection with sufficient current-carrying capacity is established between the electrical conductor 100, the conductor terminal 22 and the busbar 4.Since the conductor connection terminal 22 is firmly connected to a housing 23 of the power supply module 20, the power supply module 20 is, moreover, fixed to the module of the touch protection housing 2 having the cover 5 by the tensioning of the conductor connection terminal at the rail end 21.

[0061] As shown in Figure 4, the drives can only be accessed via tool openings 12, for example, using a screwdriver. The tool opening 12 is designed to be touch-proof, in particular finger-proof. For clarity, the conductor entry openings 7 are freely accessible in the embodiment shown in Figure 4. To provide sufficient protection against contact, the conductor entry opening can be provided with a cover plate with an adjustable opening cross-section. The cover plate can have at least two cover plate elements connected to each other via a predetermined breaking point 10 (see Figure 5) and limiting the opening cross-section, and / or at least two cover plate elements adjustable relative to each other and limiting the opening cross-section between them. The cover plate can be mounted by inserting it into the housing of the power supply module 20. An exemplary cover plate is shown in Figure 5.Figure 5 shows an aperture 8, which is suitable, for example, for forming the conductor entry openings 7 of a power supply module 20 according to Figure 4 for the touch-proof power supply of a busbar system. The aperture 8 has three conductor entry openings 7 and is therefore designed for connecting two electrical conductors of a power supply. The conductor entry opening 3 has an adjustable opening cross-section.

[0062] The aperture 8 has three sliders 13, which are held by a slider housing 13.1. Each slider 13 is adjustable relative to the slider housing 13.1 between a retracted position and an extended position. The sliders 13 each have several detent positions 32. It can be seen that the contour of the free edges 34 of the sliders 13 has a larger radius at their free ends than the contour 33 of the slider housing 13.1.

[0063] One of the sliders 13 has a predetermined breaking point 10, which allows the slider's dimensions to be adapted to a cross-sectional geometry or the dimensions of an electrical conductor in a power supply. The sliders 13 can be used to cover the conductor terminals of the power supply module in a touch-proof manner.

[0064] In the combined view of Figures 4 and 5, it can be seen that, with the help of a suitable aperture 8, for example the aperture 8 shown in Figure 5, the power supply module 20 according to Figure 4 can be completely enclosed at least to the extent that all current-carrying elements are arranged in a touch-proof manner and thus the power supply module can have the same touch protection as the other components of the touch protection housing 2.

[0065] The features disclosed in the preceding description, in the claims, and in the drawings can be relevant individually and in any combination for the realization of embodiments of the invention, the scope of protection being determined by the claims. List of reference numerals:

[0066] Touch protection arrangement Touch protection housing

[0067] Recordings

[0068] busbar

[0069] cover

[0070] Passage opening

[0071] Ladder entry opening

[0072] Aperture

[0073] bathtub

[0074] predetermined breaking point

[0075] Aperture element

[0076] Tool opening

[0077] Slider

[0078] .1 Slide housing bay connector / lock connection

[0079] End module

[0080] Central module

[0081] End cap

[0082] Central module extension

[0083] lower part

[0084] Power feed-in module

[0085] 1 Rail end

[0086] conductor connection terminal

[0087] Housing of the power supply module, connector

[0088] elastic element

[0089] Form-fit recording

[0090] Contact element

[0091] 8 Drive

[0092] 9 Top

[0093] 0 Lower part

[0094] 1 page

[0095] 2 locking positions

[0096] 3 Contour 34 Edge

[0097] 100 electrical conductor L longitudinal direction

Claims

Claims:

1. Touch protection arrangement (1) for a busbar system, comprising a touch protection housing (2) made of electrically insulating material, wherein the touch protection housing (2) has several receptacles (3) with busbars (4) arranged therein and a cover (5) covering the receptacles (3) for mounting connection adapters, wherein the cover (5) has at least one series of passage openings (6) for each receptacle which open into the respective receptacle (3), characterized in that the touch protection housing (2) has a power supply module (20) in which a respective busbar end (21) of the busbars (4) is arranged, wherein the power supply module (20) electrically contacts each busbar end (21) with a respective conductor connection terminal (22).

2. Touch protection arrangement (1) according to claim 1, wherein the conductor terminal (22) is preferably completely enclosed in a housing (23) of the power supply module (2) made of electrically insulating material.

3. Touch protection arrangement (1) according to claim 1 or 2, wherein the power supply module (2) has a housing (23) made of electrically insulating material, which is fixed to a further module (15, 16, 17, 18) of the touch protection housing (2) via a, preferably detachable, series connector (24).

4. Touch protection arrangement (1) according to claim 3, wherein the further module (15, 16, 17, 18) has the cover (5) with the passage openings (6).

5. Touch protection arrangement (1) according to one of the preceding claims, wherein the touch protection housing (2) has at least one and preferably several modules (15, 16, 17, 18), wherein the at least one module (15, 16, 17, 18) and the power supply module (2) can be mechanically connected in series in the longitudinal direction of the busbars (4) and have complementary connecting connectors (14, 24), preferably snap-fit ​​and / or positive locking connectors, on their mutually facing end faces.

6. Contact protection arrangement (1) according to one of the preceding claims, wherein the power supply module (2) for the rail ends (21) each has a positive locking receptacle (26) for receiving the respective rail end (21), wherein the positive locking receptacles (26) are preferably limited in the longitudinal direction (L) of the respective busbar by a stop (27).

7. Touch protection arrangement (1) according to one of the preceding claims, wherein at least one of the conductor connection terminals (22) has at least one electrically conductive contact element (27) for the electrical and mechanical contacting of an electrical conductor (100), wherein the electrically conductive contact element (27) is adjustable with respect to one of the rail ends (21).

8. Contact protection arrangement (1) according to claim 7, wherein the electrically conductive contact element (27) electrically contacts the rail end (21) in a position close to the rail end (21) and is out of contact with the rail end (21) in a position spaced away from the rail end (21).

9. Contact protection arrangement (1) according to claim 7 or 8, wherein the electrically conductive contact element (27) in the position approaching the rail end (21) clamps the rail end (21) in a positive locking receptacle (26) of the power supply module (20) open to the contact element (27).

10. Contact protection arrangement (1) according to one of claims 7 to 9, wherein the electrically conductive contact element (27) has an upper part and a lower part, at least the lower part facing the rail end (21) is electrically conductive.

11. Contact protection arrangement (1) according to claim 10, wherein the upper part and the lower part are adjustable relative to each other, the upper part and the lower part are preferably connected to each other via an elastic element (25) so that they are held together by a preload force.

12. Touch protection arrangement (1) according to claim 10 or 11, wherein the lower part of the contact element (27) contacts the rail end (21) in the position of the contact element (27) closest to the rail end (21) and establishes an electrical transition between the electrical conductor and the rail end (21).

13. Touch protection arrangement (1) according to any one of claims 7 to 12, wherein the at least one conductor terminal (22) has a linear guide along which the electrically conductive contact element (27), preferably at least an upper part and a lower part of the contact element (27), is adjustable with respect to the rail end (21), wherein the electrically conductive contact element (27) is preferably guided perpendicular to the cover (5).

14. Contact protection arrangement (1) according to one of claims 7 to 13, wherein the electrically conductive contact element (27) is adjustable via a drive (28) with respect to the rail end (21), wherein preferably an upper part (29) and a lower part (30) of the electrically conductive contact element (27) are adjustable relative to each other via the drive (28).

15. Touch protection arrangement (1) according to one of the preceding claims, wherein the power supply module (2) is arranged at a longitudinal end of the touch protection housing (2) with respect to the longitudinal direction (L) of the busbars (4), wherein at least one electrical conductor (100) is inserted into the power supply module (2) at a side (31) of the power supply module (2) that closes off the end face of the touch protection housing (2) and is contacted at one of the conductor connection terminals (22).

16. Touch protection arrangement (1) according to claim 15, wherein the power supply module (20) has a housing (23) made of electrically insulating material and the end face (31) of the power supply module (2) has a conductor insertion opening (7) at the end face of the touch protection housing (2).

17. Touch protection arrangement (1) according to claim 16, wherein the conductor insertion opening (7) has an aperture (8) with an adjustable opening cross-section, wherein the aperture (8) preferably has at least two aperture elements (11) connected to each other via a predetermined breaking point (10) and limiting the opening cross-section, and / or at least two aperture elements (11) adjustable to each other and limiting the opening cross-section between them.

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