DE2211165A1 - Distribution frame for electrical cables - Google Patents

Description

DIPL.-CHEM. W. RÜCKER DIPL.-ING. S. LEINE

PATENT LAWYERS O O 1 1 1 C C

22 11 praise

A / S Έ. Rasmussen

3 HANOVER. BURCKHARDTSTR. 1 TELEPHONE (O511) 62 84 73

Our sign 259/64

_Date March 6, 1972

Distribution frame for electrical cables

The present invention relates to a distribution frame for electrical cables with several parallel, preferably horizontally arranged busbars with first sockets for receiving one end of one or more Fuses, of the cartridge type and with second sockets are provided that are in. distance from the first. Sockets on the distribution frame are arranged and receive the other ends of the fuses, which are substantially perpendicular to the. Extend busbars.

■ The mentioned second sockets are with one cable end connectable and should of course be attached so that they are electrically isolated from the power rails. In practice, it is customary to attach several parallel mounting rails next to the busbars, the second Pick up sockets isolated.

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The main object of this invention is to provide a distribution frame that has a simple mechanical Has structure. The object is achieved in that each of the second sockets on one Insulating body is attached, which is attached to a different busbar than that on which the corresponding first sockets are arranged.

Hit this arrangement, it is not necessary to special Use rails to attach the second sockets, as the busbars themselves are sufficiently strong in order to additionally serve the purpose of receiving the second sockets in an isolated manner. This doesn't just bring a simplified one Construction, but also the ability to make the entire distribution frame construction more compact, i.e. H. for a given capacity of the distribution frame with lower space requirements.

The invention will be explained in more detail with reference to the accompanying drawings.

There are:

Jig. 1 is a perspective view of an embodiment of the distribution frame according to the invention,

Pig. 2 is a side view of a fastening clamp used on this distribution frame;

Pig. 3 is a perspective view of this mounting foot 4 clamp,

Pig. 5 is a perspective view of a portion of a Conductor rail with a different design

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the fuse socket is provided,

Pig. 6 and 7 perspective views of a wti-

direct embodiment of the fuse socket and

Pig. 8 shows a cross section through this fuse socket.

The distribution frame according to Pig. 1 contains a lower part 2, which has a rear plate 4 with to the front, standing off. Side walls 6, which can be connected to corresponding side walls of a front panel 8 that protrude to the rear are. A pair of vertical columns 10 are attached to the rear plate 4, between those in the lower part 2 a cross piece 12 is attached to which the to be attached to the distribution frame. Cables are attachable. The columns 10 form one. Part of the load-bearing frame structure with an upper cross piece 14.

The busbars of the distribution frame are in the transverse direction placed between the pillars 10, with their ends covered by insulating mounting blocks. be recorded by the lowest of which is provided with the reference numeral 16 and is used to hold the zero busbar 18 while the overlying three-phase busbars 20, 22, 24 are arranged in fastening blocks 26. The power rails are, as shown, G-profile rails, with a longitudinal slot 28 and an inner widened part 30. The rear is provided with extensions 52 while near the lower leading edge of the profile one. extending downwards. kender paddling part 34 is provided, the one with the paddling parts, which partially cover the interior of the enlarged part 30, forms a flat front side of the rail. The electricity

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rails are fixed in such a position that their The front sides are inclined upwards and backwards. There are correspondingly inclined recesses in the mounting blocks 16 and 26 are provided to receive the busbar ends which are attached to the mounting blocks by suitable means are. The fastening blocks 26 are, as shown on the right, with a detachable connecting element between the end of the busbar and a fastening clamp for a cable end. The way of fastening the busbars and however, the connection to the main cable is of no significance for the invention and will not be described in more detail. The distribution unit shown is covered in a known manner by means of a hood which is lowered over the upper part and attached to the lower part. On each of the busbars there is a fuse socket 64 for one end of a fuse of the cartridge type, these fuse sockets attached to a conductive base plate 68 by means of screws are attached, which in turn is attached to the busbar by means of a bolt connection on a holding part 70, which is inserted in the enlarged part 30 of the busbar.

To hold the other end of the fuse of the cartridge *** type, a socket 74 corresponding to socket 64 is used, which is arranged on a conductive base plate 76, which by means of screw 78 on an underlying block ν. 78 off Insulating material is attached. The base plate 76 protrudes from the

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The front of the socket 74 and is connected to the * - funds provided for a cable end, z. B. upstanding threaded bolt 80 and a crosspiece 92 for clamping. The insulating block 78 is on the busbar by means of a bolt connection on a holding part attached, which is inserted in the enlarged part 30 of the busbar. The block 78 can of course attached to any type of busbar in any suitable manner.

You can tell that doing this the other end of the fuse going to one of the bubble busbars is received by a socket attached to a cable holding means by direct mechanical connection with the busbar below, but isolated from it, is attached.

Of course or preferably, the three fuses are arranged in different vertical planes.

Since there should normally be no fuse in the cable connection to the neutral busbar, this connection can can be made in any useful way. With the use of the special invention. Profile busbar the cable connection can easily be carried out by means of cable clamping blocks 84, which are provided with rear splash parts, which behind the edges of the flanges of the lower half of the Grab the busbar. The sides of the insulating blocks 78 can be provided with screw holes 86 for receiving screws

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through the insulating separating plates on the sides of the block can be attached to create a separation between the fastening points of the various fuses and their cable connections to build. When connecting the main cable to the zero busbar, it is usually not necessary to to use a breakable connection so that attachment is accomplished by attached gasket means can that z. B. consist of an element 87, which is used in the enlarged part 30 of the busbar and with Clamping means (not shown) is provided.

As mentioned, the various files can be used on the Busbars are fastened by means of holding elements which are inserted into the ends of the expanded part 30 of the busbar are and either with protruding, threaded bolts or with screw holes to accommodate them Bolts are provided. When new parts are attached to the busbars of an already assembled arrangement are intended, these fasteners can be used where they can be used, i. H. near the outer free end portions the busbars. However, the invention also has fastening means that are directly connected to the busbars can be attached at the desired locations.

The one in the Pig. 2-4, the terminal block shown is therefore used to connect one end of the cable to a busbar suitable for any desired position. This terminal block has the shape of a prism-shaped block 100 on which

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A transverse recess 102 is provided at the rear end with a first or most rearward part of the recess which forms an opening to the rear and which has a height which is less than the height of the lower front flange 104 of the busbar 20. Immediately within this first Part of the recess is a second part of the recess with practically the same height as that of the flange 104. Furthermore, within this part of the recess, there is a third part of the recess with a usually triangular cross-section, with a deep and wide base part 106, which at least is as wide as the flange 104 and which is located slightly below the lower side of the second part of the recess. A vertical passage 108 is provided in the block 100 and the block is also provided with a threaded hole in the front for receiving a screw bolt.

It is of course possible to use this terminal block on a busbar by sliding it over the flange. to be attached from the end, after which the block on the flange by tightening the bolt 110 either directly against the face of the flange or against the side of one end of the cable can be attached, which is inserted into the passage 108, the cable end at the same time with the cable block is attached to the power rail. However, Bs is also

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possible to directly attach the block to the pad 104 at any desired location .; as it is possible, as indicated by the dashed lines, in. the pig. 2 indicated, the. Terminal block over the. Slide 104 by holding the block in an inclined position in which the lower Kaute ded flange 104 is receivable from the base of the third part of the recess, after which the block is tilted so that its upper edge is moved over the upper edge of the flange . The clamping block is then moved downwards until the tip of the second part of the recess rests on the upper side of the surface 104. Here, the lower side or edge of the puddle 104 is (relatively) lifted from the base of the part 106 of the recess, so that afterwards the block forwards and upwards into the position indicated by the solid lines in the Pig. 2 can be tilted. The final fastening dt · Bl « ο Jet * is then carried out by plaguing the screw bolts 110, as described above. The terminal block can, for. B. be provided with screw holes for holding parts other than a cable end, and accordingly the passage 108 for receiving the cable end a can be omitted.

Pig. 5 shows another embodiment in which the Busbars are used as a mounting base for fuse holders for screw holes. Is according to the invention it is possible to have several fuse holders on one.-yarn "insanen Iieitungsgrundplatte 120 to be arranged on the busbar

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ζ. B. by means of a bolt connection 122 with an insert is fixed in the enlarged part 30 of the busbar. The conduit base 120, as shown, is substantial wider than the busbar, so that it can serve as a base element for two fuse holders. The holders 124 themselves can be of any suitable shape with a base of insulating material attached to. a mounting base is attachable and has a common sub-screw that is tightenable on a conductive base member. The base piece can be tightened by means of screws in screw holes 126 when using the line base plate 120 and the sub-screw can be tightened in a corresponding screw hole 128. The senior. Upper parts of the fuse holder are provided with outwardly protruding conductors 130, to which the ends of the outgoing cables on suitable Way are attachable.

. It is advantageous that it is possible with the construction described, a very compact arrangement of the distribution frame to obtain, and that it is possible in the given distribution frame, the fuse holder arrangements according to Pig to use 1-5 at the same time.

The busbars are sized so that they also have fuse holders for smaller fuses of the cartridge type can wear, see h. Holders in which the diel. Sockets for both ends of the fuse on a common base are arranged. 6-8 show a particularly advantageous one Embodiment of such a fuse holder. These.

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Embodiment has a base part 140 with a base hole for attaching a screw 142, with the entire Holder on the busbar 20, for. B. by means of one provided with a screw hole for receiving the screw end Insert in the enlarged part 30 of the busbar, is tightenable. The base part 140 follows one another front extending part 144, which extends to an opening through which a contact spring 148 extends, which at its outer end has a suitable retaining spring for one end of a cartridge-type fuse 150. Above The holder has a protruding part 152 of the opening 146, which acts as a protective plate over the upper electrical The connection point between the fuse and the contact spring 148 acts in the rearward direction, the contact spring follows 148 of the surface of the part 144 and is bent down along the rear side of the base part 140. At At this point the contact spring 148 is provided with an opening for the fastening screw 142.

The base part 140 has a downward extension 154, on the underside of which another contact spring 156 is attached which has a downwardly bent portion 158 with which the end of an outgoing cable on a can be connected in a suitable manner. This contact spring 156 extends eich forward and has a suitable one at its front end Retaining spring for the lower end of the fuse 150. The advantage is that with this fuse holder both the meoha

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Niche and the electrical connection to the busbar can be carried out through the fastening screw 142, since the contact spring 143 against the busbar between the base part 140 and the front of the power rail is pressed into place. This is also achieved in that the fastening screw 142 into an opening in an ordinary busbar with a solid, right-angled. Screwed in cross-section will.

The fuse holder is protruding to the rear. Edge flanges 160 provided, which have a recess for receiving have the front of the busbar, whereby the fuse holder in its exact. Position, even when in use a single fastening screw, can be fixed in position ' can. Another recess 162 (Pig. 6 and 7) can be used to a. laterally protruding cable part 164 of an insulating separating element 166 (Pig. 7) to receive, for reasons the security can be arranged between two adjacent fuse holders .. These holding elements can, as by the dashed lines in the pig. 7, it can be designed in a V-shape in order in this way as a guide part for cables to act between the fuse holders.

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Claims (9)

A η. 8 ρ back Distribution frame for electrical cables with several parallel, preferably horizontally arranged busbars, which are provided with first sockets for receiving one end of one or more fuses of the cartridge type and with second sockets which are spaced from the first sockets on the distribution frame and the other end accommodate the fuses which extend substantially perpendicularly to the busbars, characterized in that _T that each of the second connectors is mounted on an insulator (78) (74) which is mounted on another bus bar (18) as that on which the corresponding first sockets (64) are arranged. 2. Distribution frame according to claim 1 with three-phase busbars and a neutral busbar, characterized in that the insulating bodies (78) are attached to the neutral busbar and on two of the phase busbars. 3. Distribution frame according to claim 1 or 2, characterized in that the insulating body (78) are provided with holding means (86) for insulating separating plates which delimit the spaces in which the individual pairs of the first and second sockets can be installed. - 13 209838/0896 4. Distribution frame according to claim 1, 2 or 3 with busbars which usually have a rectangular cross-section and are arranged in a common plane, characterized in that the busbars are mounted inclined so that the main direction of their cross-section forms an acute angle with their common plane forms, while the thickness of the insulating body (78) is adapted so that the upper sides of the insulating body are approximately in the plane which is formed by the front of the busbar which carries said first sockets. 5. Distribution frame according to one of the preceding claims, characterized in that the busbars have a surface (104) which has a substantially flat front side with opposite free edges, that IC terminal blocks (84, 100) are provided, dit on the flange (104 ) which have a transverse recess (102) with a rearward first part which can be pushed over the flange (104) and which has a height which is less than that of the flange (104), which has a second part , which is in communication with the first part of the recess and has a height which corresponds to that of the flange (104) or is a little larger, and is provided with a third cable which is in open connection with the second cable of the recess and has a height which is sufficient to push the clamping block (100) in an inclined position over the flange (104), so - 14 -209838/0896 that one of the edges of the flange 104va »third part of the recess and the opposite edge of the flange (104) is receivable by the second part of the recess, whereafter the block (100) is tiltable so that both edges of the flange (104) can be received by the second part of the recess (102) is, and that the block (100) is provided with a screw (110) for clamping, which is through a with a Threaded opening extends in the front of the block (100) and directed against the front of the flange (104) is. 6. Distribution frame according to claim 5, characterized in that the terminal block (100) is provided with an opening (108) into which a cable end can be inserted which crosses the opening provided with a thread and is open towards the recess (102), so that the screw (110) can be tightened for clamping against the side of a cable end inserted into the opening (103) and thereby presses the other side of the cable end against the front of the flange (104). 7. Distribution frame according to one of the preceding claims with sockets for screw fuses, characterized in that two or more sockets (124) are mounted on a common line support plate (120), their insulated ones - 15 209833/0896 Socket parts are fastened side by side on this cable support plate (120), which are used to hold the lower screws the securing sockets has openings (128) and screw holes (122) for fastening on a busbar. 8. Distribution frame according to one of the preceding. Claims comprising at least one fuse holder for smaller cartridge-type fuses, the fuse holder comprising an insulating block carrying a first and second contact spring which releasably receives the opposite end portions of a cartridge-type fuse and is electrically connectable to my busbar and a cable end, characterized in , that the fuse holder block has a base part (140) that can be tightened directly to a busbar, and that the first contact spring (148) is connected to a conductor having a rear part which is arranged adjacent to the rear of the base part (140) and when tightening the base part (I40) against the busbar can be pressed against the latter and brought into contact with it. 9. “Distribution frame according to claim 8, characterized in that the conductor extends from the rear of the base part (140) forward through an opening (146) in front, protruding part (152) which shields the protruding part of the conductor. 209838/0896 lee λ * rs e ite