UA75112C2 - Switchgear for power supply of consumers - Google Patents

Abstract

The invention relates to a power engineering distribution system for supplying electrical consumers, comprising a vertical field bus arrangement (4) and equipment insets (10) that can be contacted with the field bus arrangement (4) by means of a contact device (23). The equipment insets have a front-face equipment support plate (12) and a box-type housing (14) with a hollow space (21) in which the contact device (23) and the cables and lines required for wiring the equipment inset (10) are housed. An auxiliary tool (42) and a retainer (47) for an auxiliary terminal block (52) allow withdrawal of the equipment inset (10) in order to separate the latter from the field bus arrangement (4).

Description

Description of the invention

The invention relates to an energy distribution system for powering electricity consumers, which has: 2 - a vertical arrangement of chamber tires with a housing that accommodates them, - an instrument carrier board, which is related to the instrument removable unit, for equipping the front side with switching, control and protective devices in any combination, and on the back side of the instrument carrier board there is an internal space limited by walls, which contains a contact device, - an instrument carrier board, which belongs to the instrument removable block, for equipping the front 70 side with switching, control and protective devices in any which combination, - a supporting device for supporting and fixing the instrument removable unit.

The distribution system with the above-mentioned features is known from OE 19511348 At. In comparison with known systems of retractable elements (comparing, for example, EP 0681751 B1), due to the rejection of the bases of the compartments, it is distinguished by increased economy and allows to have the design of inexpensive distribution devices with a large number of branches in the area of small and medium capacities. The details of the carrier device are not shown.

In connection with a similar distribution system according to OE 19738705 AT, in which there is no sign of an internal space for installing a contact device on the back side of the removable instrument block, as components of the carrier device, a combination of a fixed carrier bus and a bracket, which is located on the removable instrument block, is described , as well as the centering and fixing bolt on the instrument removable block, which interacts with the fixed guide hole. At the same time, we are talking about an asymmetric carrier device, in which case it is the responsibility of the user to orient the instrument removable unit after installation on the carrier bus to the tube tires, or, accordingly, to the fixed guide hole. This device meets the characteristics of a "retractable part" in the sense of MEK 439-1 (conforms to the standard of the Association of German Electrical Engineers 0660 c part 500). Gee)

The basis of the invention, based on the distribution system according to OE 19511348 JSC, is the task of creating a relatively economical distribution system with a supporting device that provides the user with ease of maintenance with high reliability and is easy to manufacture.

According to the invention, this task is solved due to the fact that the supporting device contains stationary and symmetrically located cantilever-like holders that cover the walls of the removable instrument unit from above and below, and during the installation or, accordingly, removal of the removable instrument unit, there is electrically conductive connection with grounded parts. --

Due to the implementation of the instrument removable block in the form of a hollow body, it is achieved that the front side of the instrument carrier board can be used to a greater extent than before for the placement of the mentioned devices, since the contact device and the cables related to it can be placed in in the inner space. In addition, the interaction of such a hollow body-like device with symmetrically located cantilever-like holders means that inclined or rotational movements around a horizontal axis are reduced compared to plate instrument removable units, which "makes it much easier to orient the contact device to the arrangement of tube tires. The same holders similar to C 70 consoles can be used for instrument removable units with instrument carrier boards of different sizes. Separate grounding of the removable instrument unit during assembly or disassembly is possible

With" refuse.

The invention can be advantageously implemented in such a way that the walls of the removable instrument unit together with the instrument carrier board form a box-like housing that encloses the interior space, and that two cantilever-like holders are provided 42 which are aligned with the profile of the housing in such a way that they guide 7 the instrument removable block when connecting to the arrangement of tube tires from the side, as well as from above and below. sl The mentioned box body of the removable device unit can preferably be made in such a way that the upper wall, the back wall, and the lower wall are provided as walls, which are made in the form of an interdependent O-shaped sheet part, and the back wall and the upper wall have a common recess for - 20 passes of the contact device.

The formation of a box body with the help of an O-shaped sheet part and an instrument carrier board has, along with the possibility of easy production of these parts, the advantage that the same O-shaped sheet parts can be combined with instrument carrier boards of different sizes. Removable instrument blocks with large instruments or with a large number of instruments can be manufactured in this way. 29 Within the framework of this invention, two cantilever-like holders can be aligned with an O-shaped profile

GF) sheet part. It can have upper and lower bent shelves, as well as a stop eye for supporting the instrument carrier board. In this embodiment, the holders are suitable for placing a large number of removable instrument blocks in one chamber of the distribution device with or without a mutual gap.

Conveniently, the lower wall of the O-shaped sheet part may have a front bearing surface 60 for mounting the instrument carrier board, while the upper wall has at least one counter-support for the instrument carrier board. The support surface allows you to install or, accordingly, position the instrument carrier plate and then connect it to the counter-support. The connection can be carried out preferably separately by means of bolts or similar means, and in the area of the bearing surface there may be provided means that engage with each other, for example, pins and holes or slots. because Contact devices for a distribution system of this type are available in various forms.

Within the framework of the invention, however, an embodiment with a body having the shape of a rectangular parallelepiped is recommended, which has rib-shaped support surfaces for gripping at least two opposite edges that limit the notch. This allows you to connect the contact device to the box body without special fasteners. Only one displacement arrester is required along the edges of the walls, which can be provided by a retaining bridge that at least partially covers the wall recess.

When choosing the dimensions for a conventional branch for an electric motor, a removable instrument block of this type has dimensions that allow the user to grasp it with his hands and insert it into the chamber of the switchgear. According to a further development of the invention, maintenance can be improved even more due to 7/0 that the removable instrument block contains a block of contact terminals for auxiliary current circuits and a supporting block of contact terminals, a support structure that has a mounting plate located in front of the instruments mounted on the instrument carrier board surface for the block of contact terminals. This arrangement proved to be equally beneficial for the internal conductive assembly of the instrument removable unit and the external continuation of the corresponding auxiliary current circuits. In addition, said support structure can be /5 Made in the form of a bracket of such dimensions that it can be used by the user of the instrument removable unit as a handle. Due to this, it is possible to avoid the need for the user to use the very front surfaces of the devices, which are on the device carrier board, as auxiliary means for inserting and removing the removable device block.

The mentioned bracket can be best formed by means of two parallel, connected to the body of the instrument removable block bearing parts and a connecting bearing part from the front side of the cap bus, and the block of contact terminals contains a tail part suitable for mounting on the cap bus (fixing base or etc.). Due to the fact that the cap tires have high bending stiffness due to their profiling, they are well suited for applying forces when inserting and releasing the instrument removable block. with

Although it would in itself be possible to position said bracket so that it stands on the resultant axis of the insertion and removal forces of the instrument panel, it is recommended that the bracket be i) located near the side end of the instrument panel, while at the opposite at the side end there is a hole for inserting an auxiliary tool intended for disassembling the instrument removable unit. Due to this, the user can resort to the help of both hands and thereby obtain the ability to reliably handle even relatively heavy removable instrument blocks. For this, the auxiliary tool can have a grasping hole for pushing one hand and a limiting protrusion (5-7 to limit the path of the auxiliary tool when disconnecting the instrument removable block from the arrangement of "- tube tires. This takes into account the fact that during normal installation, the layout is flush to the left chamber tires in the chambers of the distribution device, respectively, the left side of the removable instrument blocks is located near the left wall of the chambers of the distribution device and the frame elements located there. The risk of injury to the user's hand is relatively high in this case. Due to the execution of the auxiliary tool, a gripping hole similar to as it is done in other known instruments, and the limiting protrusion such a danger is eliminated. This can be further facilitated by the fact that the distance between the limiting protrusion and the front element of the frame of the switchgear chamber containing the "instrument removable unit" is limited to the area necessary for unity of the removable device unit from v with the layout of the chamber tires.

In the housing of the removable instrument unit, there may be a cover to protect the terminals for internal;" connecting buses of contact blocks. Fixation of this cover to protect the terminals can be done with the help of locking tabs that fit into the slots of the case.

It is also worth mentioning that the designations "from above", "from below", "in front", "behind", "to the side", etc., are used above. -And refer to the position of using the instrument removable unit, if the user is in front of the arrangement of inner tubes. o The invention is explained further in more detail with the help of the example - execution presented in the figures.

Figure 1 shows a part of the chamber of the switchgear with vertical elements of the frame, - arrangement of chamber tires and with a removable instrument unit.

Ge Figure 2 shows a separate view of the instrument removable unit, as well as two console-like holders.

In Figure C, the removable instrument unit according to Figures 71 and 2 is shown from the reverse side. Figure 4 shows a side view of the instrument removable unit according to the previous figures.

Detachable instrument unit with an instrument carrier plate, enlarged in comparison with the example according to

Ф) Figure 4 shows Figure 5. The chamber 1 of the distribution device partially shown in Figure 1 contains a frame 2, from which you can see the front left element of the frame, as well as a vertical partition 3. The vertical arrangement of the chamber busbars 4 has a housing 5 with a lining 6 from the front side, which has a uniform structure of through holes 7 for contact devices. In the body 5, in a known manner, vertical chamber busbars are placed, with which the contact blocks can be brought into contact, as will be explained later. A large number of chambers 1 of the distribution device can be arranged in a known manner next to each other to form a multi-chamber distribution device. Inside each chamber, the mentioned partition C separates the instrument compartment, which contains the arrangement of 65 Chamber buses 4 and instrument removable blocks, from the compartment of cable connections, which contains cables leading from the instrument removable blocks to consumers.

Figure 1 further shows the removable instrument unit 10, placed in symmetrically located console-like holders 11. At the same time, the left of these holders 11 is fixed on the body 5 of the arrangement of the inner tubes 4, while the right holder 11 is fixed on the end flange 8 of the partition 3. Due to the fact that a number of holes are located on the body 5 and in the bulkhead 8, respectively, as planned, the console-like holders 11 can be fixed in the desired position. Therefore, in the chamber of the switchgear, many removable instrument blocks can be placed one above the other with or without a mutual gap. The removable instrument unit has an instrument carrier plate 12 on the front side, on which there are switching, control and protective devices 13. 70 The details of the removable instrument unit 10 are further explained with the help of Figures 2 and 3. In both figures, the removable instrument unit 10 is presented separately from similar to the consoles of the holders 11, due to which it can now be seen that the instrument removable unit 10 has a box body 14 formed by the connection of the instrument carrier board 12 on the front side with the upper wall 15, the rear wall 16 and the lower wall 17. At the same time, Figure C shows , that the named walls are made as a whole in the form of an O-shaped sheet part 20, which /5 together with the instrument support board 12 on the front side covers the internal space 21. Due to the common recess 22 of the upper wall 15 and the back wall 16, an opening from the reverse is created side for mounting a multi-pole contact device 23. The latter has, in a known manner, contact blocks 24 of the pincer type for placing on tube tires tube tire layout 4 (Figure 1).

From Figures 2 and 4, it can also be seen that the lower wall 17, which refers to the O-shaped sheet part 20, is made 2o Protruding in such a way that a support surface 25 is formed for overlaying the instrument carrier board 12.

According to Figure 4, due to one or a large number of downwardly protruding pins 26 of the instrument carrier board 12 and their corresponding slots 27 in the support surface 25, it is ensured that the instrument carrier board 12 can be brought to the intended position relative to the O-shaped sheet part. It then rests on the counterpores 30, which are bent from the upper wall 15. With the help of bolts 31, the instrument carrier board 12 is removably connected to the

MO-shaped sheet part 20. This allows replacing the instrument carrier plate 12 shown in Figures 1, 2, C and 4 with a large instrument carrier plate 32 according to Figure 5. In this way, it is possible to provide i) a removable instrument block 33 with large devices or with a larger installation.

As already mentioned, the contact device 23 passes through the recess 22, which is made on the upper wall 15 and the back wall 16. The contact device has a body 34 similar to a rectangular parallelepiped, provided along the narrow perimeter with additional surfaces, which are formed by offset ribs 35. Placed in a row, ribs 35 limit a groove with a width that corresponds to the thickness of the back wall 16, so that the contact device is captured by the back wall 16 from three sides. On the upper side of the remaining body 34, "- superimposed on the upper wall 15 and the back wall 16, the bent retaining bridge 36 enters between the ribs 35.

The internal connecting means of the contact device 23 are located in the internal space 21. Therefore, connecting cables to the devices 13 should be laid in it (not shown for the sake of simplicity of presentation).

For both described instrument removable units 10 and 33, the aforementioned cantilever-like holders 11 are applicable, since they are coordinated with the profile of the O-shaped sheet part 20 and for this purpose have upper and lower bent shelves 37. If the instrument removable unit 10 or, respectively, 33 are introduced between the console-like holders 11, then after a relatively short path, an effective introduction from above and below is achieved, which "prevents the overturning of the instrument removable unit 10 or, accordingly, 33. In this case, as a rule, there is a collision between the holders 11 and the instrument removable block 10 or, respectively, 33 in four places, which guarantees a fairly reliable conductive connection with the grounded frame of the switchgear chamber (frame element 2 and partition 3).

During the further movement of the instrument removable unit 10 or, accordingly, 33, the contact blocks 24 are directed to the through holes 7 of the arrangement of the tube tires 4 and are then brought into contact with the tube tires. In the assembled state, the instrument carrier board 12 or, accordingly, 32 adjoins the stop lugs 40, similar to the consoles of the holders 11, in which the hole 41 is made for receiving the fastening bolt. Figure 1 further illustrates how the user can install the instrument removable unit 10 or, respectively, 33 in a given position or, accordingly, remove it from it. On the left side of the instrument removable unit 10 or, accordingly, 33, for this purpose, an auxiliary tool 42 can be mounted, which has a gripping hole 43 and a limiting protrusion 44 in front, and for insertion into the input hole 45 on the instrument

From the removable unit 10 or, respectively, 33 - the end hook 46. As can be seen, the limiting projection 44 is distant from the frame element 2 at such a distance that it is possible to pass the path necessary for disconnecting the instrument removable unit 10 or, respectively, 33 from the arrangement of chamber tires 4. However, further movement of the instrument removable unit 10 or, accordingly, 33, which under known circumstances interferes with the user, does not occur.

Ф) To support the extraction of the instrument removable unit 10 or, accordingly, 33, a supporting structure 47 is provided on its right side, which simultaneously serves to fasten the block of contact terminals 52 for auxiliary current circuits in an ergonomically favorable position. For this, the supporting structure 47 is composed of two supporting parts 50 and a front cap bus 51, on which a block of contact terminals 52 is mounted using a conventional fixing base. As can be seen, the support structure 47 protrudes beyond the device 13, which is located below it, so much that, on the one hand, there is enough space for laying the wiring of the auxiliary current circuits and, on the other hand, the cap bus 51 or, respectively, the latter together with block of contact terminals 52 can be used as a handle. 65 The housing 14 of the instrument removable unit 10 provides a beneficial opportunity to create protection against contact of the connecting busbars 54 of the contact blocks 24 (Figures 4 and 5). This can be done due to the fact that in the box body 14 of the removable instrument unit 10 there is a cover to protect the terminals 53 of the connecting busbars 54 of the contact blocks 24. This cover to protect the terminals is made in the form of an O-shaped part made of insulating plastic, the middle one is parallel to the instrument carrier board 12, the shelf of which has locking tabs 55. In the upper wall 15 and lower wall 17 of the housing 14, slots are provided for the passage of the locking tabs 55 so that the coating for protecting the terminals 53 can be introduced into the housing 14 due to elastic deformation until the locking tabs 55 snap into the slots 56.

Claims (15)

The formula of the invention 1. Energy distribution system for powering electricity consumers, containing: vertically arranged chamber buses (4) with a housing (5) to which the buses are attached, a removable instrument block (10; 33) with a multi-pole contact device placed on it from the back ( 23) for interaction with chamber /5 tires, the instrument carrier board (12; 32), which is included in the instrument removable block (10; 33), for equipping the front side with switching, control and protective devices (13) in any combination , and in the rear part of the instrument carrier board (12; 32) there is an internal space (21), which is limited by the walls and contains a contact device (23), a carrier device for supporting and fixing the instrument removable block (10; 33), which differs in that that the supporting device contains immovably and symmetrically arranged holders (11) similar to h dO consoles, which cover the walls of the removable instrument block (10; 33) from above and below, and during installation or, accordingly, the appearance lation of the instrument removable block (10; 33) there is an electrically conductive connection with grounded parts. 2. The distribution system according to point 1, which is characterized by the fact that the walls of the removable instrument block (10; 33) together with the instrument carrier board (12; 32) form a box body (14), which has an internal space of 25 mm (21), and in that the two console-like holders (11) are aligned with the profile of the box body (14) in such a way that they guide the removable instrument unit (10; 33) when connected to the arrangement of tube tires (4) (o) from the side, and also top and bottom. 3. The distribution system according to point 2, which is characterized by the fact that the upper wall (15), the back wall (16), and the lower wall (17) are provided as walls, which are made as a whole in the form of an O-shaped sheet part c z o (20), and the back wall (16) and the top wall (15) have a common recess (22) for the contact device (23). 4. The distribution system according to item 3, which is characterized in that the console-like holders (11) are coordinated 7 with the profile of the O-shaped sheet part (20) and have upper and lower bent shelves (37), as well as a stop eye "- ( 40) to support the instrument carrier board (12; 32). 5. The distribution system according to point 3, which is characterized by the fact that the lower wall (17) of the O-shaped sheet iv) 35 of the part (20) has a front support surface (25) for overlaying the instrument carrier board (12; 32), and the upper part the wall (15) of the box body (14) contains at least one counterport for the instrument carrier board (12; 32). 6. The distribution system according to claim 3, characterized in that the contact device (23) has a body (34) similar to a rectangular parallelepiped with surfaces for covering at least two opposite edges delimiting the notch (22). " 7. The distribution system according to point 6, which is characterized by the fact that the contact device with c (23) introduced into the recess (22) is protected from displacement by means of the at least partially closing recess (22) of the fixing bridge (36) and due to this, the contact device ( 23) is connected to the O-shaped sheet part (20). :with" 8. The distribution system according to any one of claims 1-7, which is characterized in that the instrument removable block (10; 33) contains a block of contact terminals (52) for auxiliary current circuits and a supporting structure (47) on which the block of contacts is installed terminal (52). It has a mounting surface for the block of contact terminals (52) located in front of the devices mounted on the instrument-I carrier board (12; 32). 9. The distribution system according to point 8, which is characterized by the fact that the support structure (47) is made in the form of a bracket with such dimensions that it can be used by the user of the removable device unit - (10; 33) as a handle. 10. The distribution system according to point 9, which is characterized by the fact that the bracket is formed by two parallel bearing parts (50) connected to the body (14) of the device removable unit (10; 33) and connecting bearing GE parts (50) on the front side by a cap bus (51), and the block of contact terminals (52) contains a lower part suitable for mounting on a cap bus (51). 11. Distribution system according to any one of claims 1-10, characterized in that the removable instrument block (10; 33) has an inlet (45) for an auxiliary tool (42) provided for dismantling the removable instrument block (10; 33) ). (F) 12. The distribution system according to claim 11, characterized in that the auxiliary tool (42) has a gripping GI hole (43) for advancing the user's hand and a limiting protrusion (44) interacting with the fixed element of the frame (2) for limiting the path of the auxiliary tool (42) ) to the degree necessary for disconnecting the instrument removable block (10; 33) from the composition of the chamber tires (4). 13. The distribution system according to any one of claims 1-12, characterized in that one of the console-like holders (11) is fixed on the housing (5) of the assembled tube tires (4), and the other of the console-like holders (11) ) on the partition (3), which is located between the space that accepts the layout of the tube tires (4) and the cable connection compartment. 65 14. The distribution system according to each of claims 1-13, which is characterized by the fact that in the box body (14) of the device removable unit (10; 33) a cover is installed to protect the terminals (53) for the connection buses (54) contact blocks (24). 15. The distribution system according to claim 14, characterized in that the cover for protecting the terminals has a shelf parallel to the instrument carrier board (12) and locking tabs (55) protruding from it, which fit into the slots (56) of the Housing (14). s o s "- "- IS) and - - with . and? -I 1 - - 50 Ko) F) ime) 60 b5