AT13339U1 - ELECTRIC POWER CONTROL DEVICE - Google Patents

Abstract

Current-power switching device (1) with a circuit breaker (4), e.g. for 20 kV, comprising at least one pantograph contact (12) arranged to cooperate with a mating contact (17) mounted in a stationary field frame (11) and movably arranged therewith, the circuit breaker (4) being mounted on a substructure (5 ), which is movably mounted on the one hand on a stationary guide system (18) on the field frame (11) and on the other hand on a mobile transport carriage (2) which can be brought into alignment therewith.

Description

istiireldBsösts pstte «täwt AT 13 339 U1 2013-10-15

Description: The invention relates to a current-power switching device with a circuit breaker, e.g. for 20 kV, having at least one pantograph contact, which is adapted to cooperate with a mounted in a stationary field frame mating contact and arranged movably thereto.

It is known to provide circuit breakers, e.g. 20 kV circuit-breaker, in stationary frame, so-called field frame, firmly installed and provided with a busbar disconnect switch to divide the necessary separation point to the busbar can. It is also known to additionally provide protection for the respective circuit breaker, which is realized by an electro-mechanical protection device, which actuates a trigger when reaching a predetermined trigger threshold, for example via a lever mechanism, and thus turns off the circuit breaker.

A disadvantage of these known stationary circuit breakers that an exchange, for example in case of a defect or in a fault, is extremely time consuming. Furthermore, it is disadvantageous especially in such an exchange that the switching devices have a large weight and have a cumbersome design. Moreover, it is problematic that the switching devices or circuit breakers are difficult to access, which proves not only in an exchange, but also in regularly recurring maintenance or inspection work as unfavorable. Furthermore, it has been found that the protective mechanism as a result of weather or general environmental influences, namely apart from e.g. Temperature, humidity, v. a. Also dust, susceptible to interference and have a varying tolerance. Also, any changes in the current or changes in protection areas conversions of the known stationary circuit breaker extremely cumbersome and time consuming.

It is therefore an object of the invention to overcome the above disadvantages, at least for the most part, but given advantages to be maintained. In particular, the power switching device should be easily accessible, easily verifiable and maintainable and, in the given case, easily dismantled, this also for installing the power switching device in basement vaults with narrow and / or steep staircase outlets, with narrow aisles, with small room heights, generally with difficult accessibility or to disassemble. In addition, the usual stationary frame (field frame) should continue to be used.

To achieve the above object, the invention provides a power switching device as stated above, which is characterized according to the invention in that the circuit breaker is constructed on a substructure, on the one hand on a stationary guide system on the field frame and on the other hand on a Can be moved in alignment, mobile transport carriage is mounted movable.

Unlike the prior art, the circuit breaker is now no longer built-in, but movable or pluggable, and provided for switching the separation distance is accomplished by a horizontal movement of the circuit breaker with its substructure. This separation distance can be visible and thus visually verifiable. The housing of the circuit breaker may also include a digital self-powered protection and conversion system to allow the circuit breaker to perform the protection trip without auxiliary power or mechanical actuation.

Overall, there are, inter alia, the following advantages compared to a stationary construction: The circuit breaker can be changed quickly in the event of a defect or malfunction; by the trolley, the circuit breaker can be brought quickly and easily to the mounting parts or transported away from this. Inspections and maintenance provide easier, quicker access to the circuit breaker. The omission or reduction of mechanical components further results in a comparatively small 1/29??? ?Ätätät p p p pät t AT AT AT AT AT AT AT AT AT AT AT AT AT AT AT AT AT AT AT-10-10-10151515151515151515151515151515151515

Susceptibility of the protection system. In the event of changes, for example to adapt to changing needs, e.g. When changing the current to be transmitted, whereby changes in the default values are to be made to the protection device, simple, rapid conversion work is possible.

I m in view of a great flexibility, it is particularly advantageous if the trolley is designed for height adjustment with a scissors frame.

Furthermore, it is advantageous if the trolley has a transport guide unit for the substructure of the circuit breaker and this transport guide unit for coupling, e.g. by latching, is set up with the field frame in linear alignment with the stationary guide system. In this embodiment, when, for example, the trolley is brought to the field frame for installation of the circuit breaker, the guide unit can be fixedly connected to the field frame, e.g. latched, so as to allow a trouble-free, safe transfer of the circuit breaker and its substructure on the stationary guide system in the field frame, without the trolley can perform unwanted movements. In order to be able to safely move the circuit breaker with the trolley, it is also advantageous if the trolley or if necessary, the transport guide unit is equipped with a releasable locking device for fixing the circuit breaker substructure to him or her. In this case, the locking device can be easily designed as a catch-catching device with a spring-mounted latch.

For the assembly of the circuit breaker, it has also proved to be advantageous if the substructure with a latching unit, preferably in conjunction with a centering unit is formed, wherein the latching unit and optionally the centering unit for cooperating with corresponding locking and optionally centering on stationary management system is or are set up.

For the method of the circuit breaker during its assembly or disassembly, it is also advantageous if the guide system has entry rails for the substructure. The substructure can be easily carried out with lateral wheels. Instead of -sen but could of course also be provided sliding elements for sliding displacement of the substructure relative to the Einfahrschienen to the substructure.

For stability reasons and to accommodate the various mechanical fixing well, it has also proven to be beneficial if the substructure is designed as a movable box on which the circuit breaker assembly is attached.

For safety reasons, it is advantageous if the circuit breaker has a front panel cover, which is set up for locking with the field frame.

With regard to the given at the present circuit breaker horizontal separation distance in the process of the circuit breaker, it is further favorable if the current collector contact is designed as a current collector cage with correspondingly cylindrical counter contact circularly arranged fins extending from a rear current collector towards the front Extend mating contact. With such a design as a current collector cage, it is possible to compensate for any small deviations in the horizontal and / or vertical direction between the current collector cage and cylindrical mating contact and make a proper electrical contact when making the contact.

In this context, it is also of particular advantage if the lamellae are held radially by outer ring springs. It is further favorable if at least one front, comparatively weak annular spring and at least one rear, comparatively strong annular spring are provided. An advantage of this design is that the front, weak ring spring in the case of any position tolerances, as mentioned above, a slight deflection of the fins in the front area, when pushed onto the cylindrical mating contact allow, then with fully pushed pantograph cage the rear, stronger ring spring gives a secure contact. 2.29

For the production of contact on the mating contact, it is also advantageous if the lamellae have inwardly directed radial projections in the area of the front annular spring.

Finally, it is advantageous if two front, weak ring springs are provided side by side. With such a design a reliable function is also given if one of the respective annular springs should fail, for example, by breakage. This advantage also applies if two rear, strong ring springs are provided.

Finally, it is still advantageous if the lamellae are radially movable, e.g. are radially pivotable in the region of the rear pantograph, are stored and / or if the lamellae are supported and guided by at least one inner ring, preferably two inner rings.

The invention will be further elucidated below with reference to preferred embodiments, which are intended to be limited in the drawing, to which, however, it should not be restricted. 1 is an exploded view of the main components of the present current-power switching device in a side view; FIG. Fig. 2, 3 and 4, the power switching device of FIG. 1 in association with a stationary field frame, in Fig. 2 in a state in which it has just been brought to the field frame, in Fig. 3 in a position at which the power switch has been partially transferred into the field frame toward mating contacts, and finally in Figure 4 in the end position where the electrical contacts are closed;

Fig. 5B is a perspective view of a transport guide unit mounted on a trolley as shown in Figs. 1 to 4; a detail of this transport guide unit in perspective view, namely a catch-catching device for fixing a circuit breaker substructure on this guide unit; also in a perspective view one of the two lateral latching devices for coupling the transport guide unit with the field frame; Figures 6A to 6D are schematic views of the catch-catching device of the trans port-guide unit in fixing the substructure of the circuit breaker. Figs. 7A to 7F are schematic views of different positions of one of

Latching means of the transport guide unit when latching or loosening the field frame; Fig. 8 is a perspective view of the substructure of the circuit breaker in the form of a box with side wheels; Figure 9 is a schematic, perspective view of a portion of the stationary guide system on the field frame, locking and centering and provided on the substructure locking unit with a mounted on a link pawl that can be actuated via the linkage to release; 10A to 10C and 11A to 11C three different positions of the locking unit together with linkage relative to the latching means on the field frame, Figs. 11A to 11C show in individual schematic views of the linkage connected to the rod and the stationary latching element on Field frame is shown schematically in front view; FIGS. 12A to 12C show plan views of the substructure of the circuit breaker when approaching the stationary latching and centering means, wherein a centering means is also a stationary one accommodating a bar on the substructure Bush is visible; Fig. 13 is a perspective schematic representation of a Stromabneh merkäfigs and an associated stationary mating contact; Fig. 14 is a cross-section through this pantograph cage; FIGS. 15A to 15F show different phases during closing and subsequent separation of the current collector cage and mating contact; Figs. 16A and 16B schematically show a front cover for the power switching device in Fig. 16A when locked to the field frame and in Fig. 16B in unlocking; and Figs. 17A and 17B are schematic illustrations of a cable compartment cover below the circuit breaker, and the like. in Fig. 17A in the locked state and in Fig. 17B in the unlocked state, in which the box substructure with the circuit breaker in the field frame as shown in FIG. 2 to 4 - in and out of this can be transferred.

In Fig. 1, a mobile power Leistunsschaltvorrichtung 1 is illustrated in an exploded view, it being understood that on a trolley 2 via a transport guide unit 3, the actual circuit breaker 4 is supported, said power switch 4 on a substructure 5 in Shape of a box 6 is constructed with lateral wheels 7.

The trolley 2 has wheels 8 and above a chassis with a scissors-type frame 9, so as to mount the top 10 of the trolley 2, on which is mounted on the transport guide unit 3 of the circuit breaker 4 with its substructure 5, in height, depending on the field frame 11 (see Fig. 2 to 4) to be able to adjust.

The circuit breaker 4 has current collector contacts 12 in the form of current collector cages 13, which will be explained in more detail below with reference to FIGS. 13 to 15F.

Furthermore, a vertical sheet metal cover 14 for the circuit breaker 4 can be seen from Fig. 1, said sheet metal cover 14, as will be explained below with reference to FIGS. 16A and 16B, can be locked to the field frame 11.

The actual structure of the circuit breaker 4 is essentially conventional and need here no further explanation.

The individual components of the power switching device 1 are, after an introductory description of the bringing of the circuit breaker 4 to the field frame 11 by means of the trolley 2 and the transfer of the circuit breaker 4 in the field frame with reference to FIGS. 2 to 4 even closer, with reference to FIG 5 to 17, will be explained.

In detail, it can be seen from Fig. 2 that the trolley 2 has been moved up with the power switch 4 thereon to the frame of the field frame 11, on the one hand in the area A, the substructure 5 of the circuit breaker connected to the transport guide unit 3 and on the other in this position, the transport guide unit 3 is locked in the area B with parts of the field frame 11. In the area C, stationary latching and centering means 16 or 15 of the field frame 11 are illustrated, which will be explained in more detail below with reference to FIGS. 9 to 12C.

Furthermore, counter-contacts 17 for the current collector cages 13 are illustrated in the field frame 11, these contacts 17/13 having been transferred to a contact position (see region D) illustrated in FIG. However, before the power switching device reaches this position, it still arrives in the illustrated in Fig. 3 intermediate position in which the lower 4/29

In the design 5 of the circuit breaker 4 has already been transferred to a stationary guide system 18 in the field frame 11, so that the trolley 2, which is still shown in Fig. 2, could already be removed.

In Fig. 3, moreover, a plug-in opening or insertion direction for an insulating material not shown in detail is schematically illustrated with a broken line 19, wherein such insulating plate is then attached when the contacts 13, 17 are separated as shown.

As already indicated in Fig. 4, the power switching device 1 is illustrated with the circuit breaker 4 in the closed switching position, in which the substructure 5 has been completely transferred to the stationary guide system 18 of the field frame 11, and further in the sheet metal cover 14 on Field frame 11 has been fixed. Furthermore, in this position, a lower cable compartment cover 20 is also locked to upper slide parts, as will be explained in more detail below with reference to FIGS. 17A and 17B.

The completeness is still referred to some per se conventional components, which are shown in Figures 2 to 4, wherein they are indicated in Fig. 2 as follows: Above a Isolierstoffabstützung 22 are made of round copper existing busbars 21, the over Busbar outlet connections 23, also made of round copper, are connected to a Kupferverlrenung, with the mating contacts 17 in conjunction, stand. For holding the mating contacts 17 insulating 24 are attached to an upper or lower support trough 25 '.

In Fig. 5 is schematically schematically a transport guide unit 3 shown alone, which is mounted on the trolley 2 as mentioned or is. This transport guide unit 3, hereinafter referred to as guide unit 3, has on the one hand a locking device 21, which is shown alone in Fig. 5A, and on the other hand, two lateral latching devices 22A, 22B, one of which, the latching device 22A, diagrammatically for shown alone in Fig. 5B.

The locking device 21 serves to fix the circuit breaker substructure 5, i. of the movable box 6, which is formed with associated locking means, in the form of a tab 23, as shown in FIG. 8, on the guide unit 3. The fixation of the movable box 6, so the substructure 5, on the guide unit 3 will be below will be explained in more detail with reference to FIGS. 6A to 6D.

The locking devices 22A, 22B, generally 22, on the other hand serve for coupling, in the example shown by latching or latching, the guide unit 21 with the field frame 11 in order after the pushing of the trolley 2 to the field frame 11 - see Fig. 2 -. to accomplish a corresponding coupling with the field frame 11 so that then the transfer of the circuit breaker 4 from the trolley 2 on the stationary guide system 18 of the field frame 11 (see Fig. 3 and finally Fig. 4) can be done without the risk that the support structure, in particular with the transport carriage 2, undesirably moves relative to the field frame 11. This coupling or latching is explained in more detail below with reference to FIGS. 7A to 7F.

Incidentally, the guide unit 3 in a manner not to be explained in more detail, per se conventional manner, for example by screwing, with the actual trolley 2, immovably connected.

The locking device 21 has shown in FIG. 5A with a headband 25 screwed frontally bearing pin 24, for example, with a square cross section, on the non-rotatable a bow-shaped locking member 26 with its two legs 28, 29 is mounted longitudinally displaceable. In this case, this locking member 26 is under the bias of a compression spring 27. At as shown in Fig. 5A and in Fig. 6 front, left leg 29, a ramp-shaped locking projection 30 is mounted, through an example, slot-shaped opening 31 in the corresponding leg 32 of the retaining clip 25 protrudes. 5.29

The counterpart 23, which, as shown in FIG. 8, is formed by a double angle sheet, which protrudes like a tab from the box 6, is formed with a corresponding latch opening 33. As can be seen from the detail figures 6A to 6D of Figure 6, when lowering the circuit breaker 4 on the trolley 2 from the counterpart 23 a force F (Fig. 6A) is exercised, which causes the locking projection 30 with its resiliently displaceable locking part 26th is shifted backwards (to the right in Fig. 6) against the force of the biasing spring 27, see Fig. 6B, wherein the spring 27 is compressed. Then, when the counterpart 23 is lowered even further, the latching projection 30 engages under the action of the spring 27 in the latching opening 33, as shown in Fig. 6C.

When releasing this locking a corresponding force F is exerted on the right as shown in FIG. 6 leg 28 of the U-shaped locking member 26, s. again Fig. 6B to move the locking member or latch 26 as shown in Fig. 6 to the right, u. zw. Against the force of the spring 27, and thereby bring out the locking projection 30 from the locking opening 33. Thereafter, the power circuit breaker 4 together with its substructure 5, thus together with the counterpart 23, be lifted from the trolley 2 including guide unit 3 upwards, s. Fig. 6D. As long as the locking projection 30 slides on the sheet metal of the counterpart 23, while the spring 27 is compressed until finally the locking projection of the counterpart 23 passes and is shifted to the result of the spring force as shown in Fig. 6 to the left, whereby the starting position shown in FIG. 6A is reached again.

The latching part 26 can thus also be referred to as a spring-mounted latch 26.

The detents 22 on the guide unit 3 (see Fig. 5) each have an actuating linkage with a rear, angled handle 35 on a rod 36; at the front, as shown in Fig. 5 right, as shown in Fig. 5B left end of this rod 36 is a lever-like detent 37 is pivotally mounted about an axis 38 in an angled bearing plate 39 which is supported by the respective rod 36. At the front end, the detent pawl 37 has a latching hook 40, and the rear or upper lever arm of the angle lever-like latch 37 engages a tension spring 41, which is attached to the angled plate 39 at the front and so the rear, upwardly extending lever arm 37 '(see Fig. 7A) pulls forward, so that the latching hook 40 is biased downward.

The rod 36 of each locking device 22 is - s. Fig. 5B - in the transport guide unit 3, i. at its base, slidably mounted in the rear region on an angle-shaped holder 42, wherein a guide pin 43 projects on the holder 42 through a longitudinal slot 43a on the push / pull rod 36. The respective rod 36 is articulated in detail with the latch 37 as shown in FIG. 7B via a pin 44.

In Fig. 7, part of Figure 7A (and corresponding to FIG. 7F), a basic position is shown, in which the latching hook 40 still at a distance from a detent opening 45 in a stationary plate 46 of the field frame (11 in Fig. 2) is present.

Referring now to Fig. 7B, the trolley 2 (see Fig. 2) is slid against the field frame 11, with the approach shown in detail in Fig. 7B where the detent projection 40 has an oblique lower edge on the lower edge the latching opening 45 slides in the plate 46, so that the angle lever latch 37 is pivoted against the force of the tension spring 41 about the axis 38. In the position shown in FIG. 7C, the latching hook 40 is then latched in the opening 45 in the sheet 46.

When the latching is to be released again, a train is exerted on the rod 36, s. Arrow F in Fig. 7D, wherein the angle lever pawl 37 is now pivoted by this train at the rear end in a clockwise direction (as shown in Fig. 7), so that the latching hook 40 is lifted from the lower edge of the latching opening 45, wherein exactly this position is shown in Fig. 7D. Thereafter, the rod 36 is still retracted, s. Fig. 7E, wherein the latching hook 40 is released entirely from the latching opening 45, after which he again, upon release of the rod 36, in its initial position shown in FIG. 7F (= Fig. 7A) to 6/29

It is said that it returned to AT 13 339 U1 2013-10-15 under the action of spring 41.

As already briefly mentioned above, in Fig. 8 is a perspective view of the circuit breaker substructure 5 forming movable box 6 is shown, on the one hand the catcher counterpart 23 on the back and on the other hand, the side wheels 7 (of course, are also on the opposite, according to FIG. 8 rear side corresponding wheels provided) can be seen. Furthermore, towering tabs 47 can be seen, which serve for the rigid connection of the substructure with the actual circuit breaker 4, s. also Fig. 1.

In this box 6 further, not shown in detail in Fig. 8 components for fixing the box 6 in the field frame 11 are then provided, these components hereinafter with reference to FIGS. 9, 10A to 10C and 11A to 11C and 12A to 12C should be explained.

In Fig. 9, a part of the field frame 11 with the stationary, Einfahrschienen 50 having guide system 18 is illustrated schematically, wherein it is also apparent that on a Einfahrschienen 50 connected cross member 51, a sleeve-shaped centering element 16 and a hook-shaped locking element 15 are attached , These latching and centering elements 15, 16 cooperate with corresponding units, namely a latching unit 52 and a bar-shaped plug element 56 (see Figures 12A to 12C) provided in the box 5 as a centering unit 55, for moving the movable substructure 5, i. the box 6, in the field frame 11 when driving inward by means of the centering unit 55 and the associated centering 16 on the frame and on the other hand with the aid of the latch unit 52 and the associated latching means 15 to lock, as is the case in particular from Fig. 12B, but also from Figs. 10A to 10C and 11A to 11C.

As can further be seen in FIG. 9, the latching unit 52 (which is mounted on the movable box 6, see, for example, FIG. 12A) has an actuating rod 53 which carries a latching pawl 54 which can be latched with the latching means 15 , With the rod 53 on the other hand, an outer actuating rod 57 is connected, which is loaded by a spring 58 so as to bring about automatically when driving in the box 6 on the stationary guide system 18, due to the spring force locking between the parts 54 and 15.

10A and 11C and 11A to 11C, the operation of such centering and locking is illustrated, wherein in Fig. 10A and HA, the situation when retracting the box 6 is illustrated, whereas in Fig. 10B and 11B the beginning of the latching is still illustrated without blocking. In FIGS. 10C and 11C, the latching or locking is then shown, on which the latching pawl 54 with a tooth-like projection 59 (FIG. HC) is latched into a latching notch 60 (FIG. 10A) of the latching element 15. In this position, the pawl 54 is pivoted upwards with its rear end 61 (see FIG. HC), which means that the likewise forming a lever rod 53 is pivoted with its rear lever arm 62 downward, s. Fig. 10C. For unlocking the actuating rod 57 must be pulled up against the force of the spring 58 as shown in Fig. 10C, whereby the latch 54 is pivoted against the arrow in Fig. HC, so that the tooth projection 59 is lifted from the notch 60.

However, before this latching takes place, the box 6, as shown in FIGS. 12A to 12C, is advanced along the stationary guide system 18 in the direction of its transverse bar 51 (FIG. 9), the bar 56 being inserted into the socket 16 enters the centering system, s. 12B and 12C, wherein finally in the position shown in FIG. 12B, the locking described above with reference to FIGS. 10A to HC can then take place.

In detail, the separate basic position is shown in Fig. 12A, the locking in Fig. 12B, wherein the current contacts 13/17 (see Fig. 2) are still in the disconnected position, and in the Fig. 12C after the Continuing into the operating position the operating end position.

When loosening and extending, the reverse is done, i. E. it is made in the operating position shown in FIG. 12C unlocking, and it is then the box 6 in the 7/29

AT 13 339 U1 2013-10-15

Extended release position shown in FIG. 12B, after which the locking given there is unlocked, so that then the box 6 can be further extended to the normal position.

In Fig. 13, one of the pantograph cages 13 forming the power contact 12 is schematically illustrated in combination with a mating contact 17 mounted on the stationary field frame; In Fig. 14 is a plan view of this pantograph cage 13 is shown. The pantograph cage 13 is constructed in the illustrated embodiment with twelve pantograph fins 65, which are radially held together by external elastic rings or ring springs 66A, 66B and 67A, 67B. Inside the lamellae there are two superimposed rings 68 with radial slots to the outside to hold the lamellae 65 axially in position as well as radially movable.

The front rings 66A, 66B are relatively weak to allow the blades 65 to move away at a relatively low resistance; the rear resilient rings 67A, 67B are comparatively strong annular springs. By the respective double training a function is also secured at a fraction of a respective annular spring 66 and 67.

The slats 65 have at their front end a ramp-shaped projection 69, s. Fig. 15A, wherein against this ramp-shaped projection 69 of the mating contact 17 abuts when the current collector cage 13 is moved against the mating contact 17, see. also Fig. 15B. The cage formed by the fins 65 is movable as a whole relative to a rear contactor or current collector 70, i. axially displaceable, as can be seen from a comparison of FIGS. 15B and 15C. Therefore, when the cage 13 runs onto the mating contact 17, in the transition from the position according to FIG. 15B to that according to FIG. 15C, the cage formed by the lamellae 65 is briefly stopped and the actual contact part 70 is advanced further, as also with the arrow in FIG Fig. 15C (see also Fig. 15A) is indicated.

Upon further advancing movement of the pantograph cage 13, i. of the circuit breaker 4, s. 4, the contact between the current collector cage 13 and the mating contact 17 is finally closed, as illustrated in FIG. 15D, where the current flow I from the contact 70 to the mating contact 17 is also shown there.

From this contact position, a reverse sequence of positions is achieved when separating the contacts, wherein Fig. 15E shows the situation in which the contact member 70 has been moved relative to the slats 65 back, however, the mating contact 17 still within the Slats 65 is located; in a further backward movement of the load switch 4 and the pantograph cage 13 is withdrawn altogether from the contact 17, s. Fig. 15F.

In Figs. 16A and 16B, the front panel cover 14 is then locked in the " locked " state. (Fig. 16A) or in the state "unlocked". (Figure 16B). In this case, in addition to the already mentioned with reference to FIGS. 2 to 4 front panel 14 associated with it a linkage 81 is shown, which is mounted by means of a handle 82 on a deflecting 83, which is rotatably mounted on the plate 14, s. also the position according to FIG. 16B in comparison to that according to FIG. 16A; this deflecting 83 works on rods 84, 85 with lifting discs 86, 87 together, so finally on the linkage 81 in the region of a rod support 88 and a lifting spring 89 has a locking end in a receptacle 90, in the extended locking position shown in FIG. 16A, or to bring back into the retracted unlocking position.

Finally, in FIGS. 17A and 17B, a cable compartment cover 20, as already mentioned above with reference to FIG. 4, is schematically illustrated in a view from the inside, wherein two transversely displaceable cover plates 91, 92 are shown, which in the closed position according to FIG 17A are pushed in front of recesses 93, 94 in order to lock them, whereas in the release position according to FIG. 17B these recesses 93, 94 are released for the passage of the wheels 7. For actuation of the two cover plates 91, 92, a rotary / longitudinal drive knob 95 is provided on the cable compartment cover 20 to adjust over the linkage 96, 97, the cover plates 91, 92 - under guidance by means of slots 98 on guide pin 99 horizontal. With 100 and is an associated rod stock designated, and in 8/29 ffitirneidsisdies pstwtaspt AT 13 339 U1 2013-10-15

FIG. 17A also schematically illustrates the retaining elements 101 provided for locking. Furthermore, on the cable space cover 20 Aushebegriffe 102 are attached.

Although the invention has been described above with reference to particularly preferred embodiments in connection especially with the various latches and couplings, so of course a respective modification of the modification is possible without departing from the scope of the invention. The individual locking devices or coupling devices can be replaced by similarly acting other, known per se locking elements, etc. Furthermore, it is of course conceivable, in the current power switching device and protective devices / modules and / or current transformers, as known per se to incorporate. 9.29

Claims (18)

AT13 339U1 2013-10-15 Claims 1. A power switching device (1) having a circuit breaker (4), eg for 20 kV, which has at least one pantograph contact (12) for co-operating with a counter contact (17) mounted in a stationary field frame (11) is arranged and movable therefor, wherein the circuit breaker (4) is constructed on a substructure (5) on one hand on a stationary guide system (18) on the field frame (11) and on the other hand is movably mounted on a mobile transport carriage (2) which can be brought into alignment, characterized in that the substructure (5) is formed with a latching unit (52), preferably in connection with a centering unit (55), wherein the latching unit ( 52) and optionally the centering unit (55) for cooperating with corresponding locking and optionally centering elements (15, 16) on the stationary guide system (18). is set or are. 2. Power switching device (1) according to claim 1, characterized in that the transport carriage (2) for height adjustment with a scissor frame (9) is formed. 3. Power switching device (1) according to claim 1 or 2, characterized in that the transport carriage (2) has a transport guide unit (3) for the substructure (5) of the circuit breaker (4) and this transport guide unit (3) for coupling , eg by latching, with the field frame (11) in linear alignment with the stationary guidance system (18). 4. Power switching device (1) according to one of claims 1 to 3, characterized in that the transport carriage, optionally the transport guide unit (3), with a releasable locking device (21) for fixing the circuit breaker substructure (5) is equipped. 5. power switching device (1) according to claim 4, characterized in that the locking device (21) is designed as a catch-catching device with a resiliently mounted locking part (26). 6. power switching device (1) according to one of claims 1 to 5, characterized in that the guide system (18) insertion rails (50) for the substructure (5). 7. power switching device (1) according to claim 6, characterized in that the substructure (5) with lateral wheels (7) is executed. 8. power switching device (1) according to one of claims 1 to 7, characterized in that the substructure (5) is designed as a movable box (6) on which the circuit breaker assembly is mounted. 9. power switching device (1) according to one of claims 1 to 8, characterized in that the circuit breaker (4) has a front sheet metal cover (14) which is adapted for locking with the field frame (11). 10. power switching device (1) according to one of claims 1 to 9, characterized in that the current collector contact (12) as a current collector cage (13) with corresponding cylindrical counter-contact (17) is arranged in a circle arranged slats (65) extending from a rear pantograph forward toward the mating contact (17). 11. Power switching device (1) according to claim 10, characterized in that the lamellae (65) by outer annular springs (66, 67) are held radially. 12. Power switching device (1) according to claim 11, characterized in that at least one front, comparatively weak annular spring (66) and at least one rear, comparatively strong annular spring (67) are provided. 10/29 INFRASTRUCTIVE PUBLICITY AT 13 339 U1 2013-10-15 13. Power switching device (1) according to claim 12, characterized in that the lamellae (65) in the region of the front annular spring inwardly directed radial projections (69). 14. Power switching device (1) according to claim 12 or 13, characterized in that two front, weak ring springs (66A, 66B) are provided side by side. 15. Power switching device (1) according to any one of claims 12 to 14, characterized in that two rear, strong annular springs (67 A, 67 B) are provided. 16. A power switching device (1) according to any one of claims 10 to 15, characterized in that the lamellae (65) radially movable, e.g. in the region of the rear pantograph (70) are radially pivotable, are stored. 17. Power switching device (1) according to one of claims 10 to 16, characterized in that the lamellae are supported and guided by at least one inner ring (68), preferably two inner rings. For this 18 sheets drawings 11/29