DE19731942A1 - Electrical switching system - Google Patents

Abstract

The system has two blocking arrangements (24 and 13, 14) that prevent the first and second (7) counter contacts from both being in contact with their respective connector contacts simultaneously.

Description

The present invention relates to an electrical switchgear assembly with a a plurality of slide-in slide-in frames, in which switchgear-carrying plug-in units can be inserted, in the on push frame mounted first contacts and to the on provided the first mating contacts, which mutually lead to Closing a main circuit can be electrically connected by the first counter contacts by means of a first actuator relative to Insert in the direction of the contacts are moved, so as with the second connection contacts and existing on the insert second counter contacts that with each other for closing a branch circuit, in particular a test circuit are electrically connectable by the second counter-contacts by means of a second actuator relative to the slot towards the second connecting contacts are moved, the first actuator supply organ preferably also acts on the second counter contacts in order to close the secondary circuit immediately with the main circuit.

Such a switchgear is known from DE 195 09 474 A1. At this known switchgear are the first counter contacts and the second counter contacts by independent actuators ne moved in the direction of contact. The first counter contacts are there when guided on the insert and are only after full constant insertion of the insert into the insert frame position of the operating position of the switch on the plug-in unit  devices moved to the contact position. Can do this independently second counter contacts by actuating a second actuating member be connected to second connection contacts, namely contacts egg control plug to perform a device test.

A problem with this known switchgear is that when one switch the operating state by actuating the first actuation organs electrical flashovers between the first counter contacts and the first connection contacts can occur if from the previous voltage is still present at the control connector during the test phase.

The invention has for its object to solve this problem, in particular in particular, the appearance of rollovers when switching on the operation prevent condition.

This task is there in a switchgear of the type mentioned solved by that a blocking device is provided, the contact tated second contacts and second counter contacts one Contacting the first mating contacts with the first connecting contacts clocking prevented.

The blocking device according to the invention makes electrical Rollovers reliably prevented, since contacting the first Ge Genkontakte with the first connection contacts only after the previous one Separation of the second counter contacts from the second connection contacts is possible. There can therefore be no voltage on the second counter contacts, for example from a previous test phase. With  in other words, the drawer must be in the zero position if the main circuit is to be closed.

A second blocking device is preferably provided, which when in contact tiert first connection contacts and first counter contacts a loosening of the second counter contacts from the second connection contacts different. This will inadvertently open the secondary circuit prevented when the main circuit is closed.

The blocking devices are in particular a mechanical block Kier facilities trained. For example, the actuator gane each include a lock part, which be by a key is operable, the access opening of the lock for the key to Blocking can be blocked by a slide. Is particularly preferred it if both locks can be operated with the same key are. This simplifies the operation of the switchgear at the same time by the blocking devices according to the invention no Ge incorrect operation. As a key, for example se a simple square serve, which with a correspondingly out formed lock part of the respective actuator cooperates.

According to a further embodiment of the invention, display means are provided seen through which the operating state of the insert can be displayed zero position, test position and operating position. This configuration further simplifies operation reached because the operating status of the respective slide-in immediately is visible and therefore an attempt to operate it incorrectly can be prevented.  

According to a special embodiment of the invention, the first comprises Actuator preferably by a key, in particular Square wrench, rotatable threaded shaft, which when turning it Most counter contacts moves relative to the insert and thereby with engages the first contacts of the slide-in frame and which simultaneously pivots an angle lever, the one with its The swivel arm is coupled to a rotor that is slidably guided on the shaft pelt and with his other leg the second counter contacts right relative to the slot and thus with the second connection contacts. This configuration is based on cleverly a simultaneous closing of the main circuit and the secondary circuit by operating the first actuator nes alone causes, advantageously ver by the angle lever different contacting directions can be realized. In particular in particular, the contacting direction of the second contacts can be vertical to the direction of contact of the first contacts.

According to a further embodiment of the invention, a is in the insert Insert which can be moved transversely to the direction of insertion, which carries the second counter contacts and when the first actuator is actuated is moved in their contacting direction, the second counter contacts in turn on the use in contacting direction guided and by pressing the second actuator organs are movable. This configuration achieves that the second contacts either by pressing the first button gungsorgan or the second actuator contacted  be able to either perform a device test or the Set operating status.

According to a further embodiment of the invention, the insert and the sliding insert on the opening side of the one a front wall with a Passage opening for the key that is in zero position with each other aligned, but in the operating position of the first actuator are shifted from each other. By only in the zero position with each other The blocking according to the invention will be aligned with through openings direction for the actuation of the second actuator in constructive realized in an uncomplicated manner.

According to a further embodiment of the invention, the second actuator has gungsorgan a by a toothed shaft in the direction of displacement second counter contacts sliding rack on the one hand the second counter contacts and on the other hand at one end of a Attacks pivot lever, at the other end a slider is articulated is parallel to the inside of the front end wall of the insert is guided displaceably and when the second actuator is actuated gungsorgans an opening in the end wall of the slot for covered the key for actuating the threaded shaft while he releases this in the zero position. This configuration results in more skillful Actuation of the second contacts and at the same time blocking of the first actuator. The second shaft is preferably against twisting is blocked as long as no key is inserted to lock ensure that when the first actuator and Ver push the insert into contact with the second counter contacts  direction and not a counter-rotation of the second shaft occurs.

According to a further embodiment of the invention, the insert is through a door hinged to the slide-in frame can be covered, a ver Locking element is provided, which opens the door at ge closed first and / or second contacts prevented. This Ausge design represents another security feature, which is a dam the switchgear by pulling out the plug-in module into the test or Operating position prevented.

Preferably serves as a locking element on the sliding one Set arranged hook, which with a provided on the door Stop interacts. The catch is particularly against Can be triggered manually by a return spring, with an access opening is provided for hooking for an emergency release. This configuration ensures that in special emergencies despite being connected first and / or second contacts, opening the door is possible.

According to a further embodiment of the invention, the two comprise Actuators for the first and second contacts one each Slide-in slide rod, one of which is the first Counter contacts and the other the second counter contacts in contact direction of movement, and one each with the drive rod in engagement standing, rotatably mounted gear in the slot, via which the orderly drive rod is actuated. This configuration enables particularly compact design of the insert and is therefore for smaller ones Inserts particularly suitable.  

The drive rods preferably grip one leg of each in the slot rotatably mounted angle lever, the other Schen kel is coupled to the first and second mating contacts. Hereby the contact direction can be independent of the direction of movement the drive rods, in particular perpendicular to this, where preferably both contacting directions are identical to one another.

According to a further embodiment of the invention, the second gear a ge in the slot parallel to the second drive rod led frames arranged to which a third drive rod is coupled pelt, which is in engagement with and from the first gear is moved with the first drive rod. Through this configuration the second counter contacts can be activated by pressing the first one or the second actuators in the contacting direction become.

The gears can preferably be actuated by means of a key and removed key secured against twisting. For this they can Gears a central receptacle for the key, especially four wrench, have the recordings by means of a plate are coverable. Both the turning of the gears and the blockage tion are solved in a particularly simple manner. By twisting fuse ensures that when you press the first actuator the second counter-contacts are moved at the same time, and themselves not turn the gear in the opposite direction and thereby the second The drive rod stands still.  

The contacting direction of the first and second counter contacts ver runs preferably in the direction of insertion. The display device and the Plate are preferably also operated via the drive rods.

In addition, advantageous embodiments of the invention result the dependent claims, the drawing and the description of the figures.

Embodiments of the invention are shown in the drawing and are described below. It shows, each in a schematic diagram position:

Fig. 1 shows a section through an inventive slot,

Fig. 2 operating elements for use in the execution example of Fig. 1 in an enlarged representation in the zero position,

Fig. 3, the actuators of Fig. 2 in the test position,

Fig. 4 shows the actuators of Fig. 2 in the operating position,

Fig. 5 is a perspective view of the actuators of a second embodiment of the invention,

Fig. 6 is a plan view of the actuators of Fig. 5 partly broken away and elements in the zero position,

FIG. 7 shows a representation according to FIG. 6, but in the test position and

Fig. 8 is a representation of FIG. 6, but in the operating position.

The insert shown in FIG. 1 1 of an electrical control and monitoring systems according to the invention is box-shaped and has on its situated in the insertion direction rear wall 2 a plurality of contacts 3 and 4 that the fiction, modern as mating contacts not shown here terminal contacts in a likewise not shown here, the guide frame Switchgear can be contacted. The counter contacts 3 and 4 each include a contact slide 5 , which is displaceable along a contact rail 6 in the contacting direction. It is single Lich a contact slide 5 shown. The contacts 3 can be used in particular to connect a main circuit, while the contacts 4 are used, for example, to connect to a power supply.

The second mating contacts are designed as a control plug 7 , which is shown only schematically here and which can be displaced perpendicular to the direction of insertion I in the insert 1 and can be connected to a corresponding socket in the insert frame. As can be seen in FIG. 2, the plug 7 is arranged on an insert 8 which can be moved transversely to a direction of insertion I, that is to say in the direction of contact II of the control connector 7 in the insert 1 . The connector 7 is seated on a carrier 9 , which in turn is guided on the insert 8 in the contacting direction II of the connector 7 . For this purpose, a toothed rack 10 engages on the support 9 , which can be driven via a shaft 11 in the contacting direction II. The shaft 11 can be rotated by a key, not shown here, which can be brought into engagement with an end face of the shaft 11 . For this purpose in the front end wall 12 of the insert 8 and in the front end wall 13 of the insert 1 aligned with each other through openings 14 and 15 are provided. By rotating the shaft 11 , the rack 10 is moved in the contacting direction II and thereby the connector 7 is connected to the associated socket. This test position is shown in FIG. 3.

On the insert 8 engages an angle lever 16 with its one leg 17 , which is rotatably mounted in the insert 1 about a pivot point 18 . The other leg 19 of the angle lever 16 is coupled to a first slide 20 which is guided displaceably on a threaded shaft 21 . By turning the threaded shaft 21 , the slide 20 moves and thereby pivots the angle lever 16 , which in turn shifts the insert 8 in the contacting direction II of the plug 7 . At the same time, by rotating the threaded shaft 21, a second slide 22 is moved in the insertion direction I, which is coupled to the first mating contacts 3 , 4 , in particular via a common comb-like element, which is not shown here.

Rotation of the threaded shaft 21 thus leads on the one hand to a contacting of the first mating contacts 3 , 4 with the associated connection contacts in the slide-in frame and on the other hand to a connection of the plug 7 to the associated socket. This operating position is shown in Fig. 4. By moving the insert 8 , the passage opening 14 is shifted relative to the passage opening 15 , so that they are no longer in alignment. A key can therefore no longer be inserted and brought into engagement with the shaft 11 . This means that it is not possible to rotate the shaft 11 when the threaded shaft 21 is rotated.

The actuation of the threaded shaft 21 in turn takes place via a key, the same key preferably being used as for the actuation of the shaft 11 . In the end wall 13 of the insert 1 egg ne further passage opening 23 is provided, through which the key can be inserted and brought into engagement with the threaded shaft 21 . The passage opening 23 can be covered by a plate 24 which is displaceably guided in the insert 1 parallel to its front end wall 13 and is actuated by a lever 25 which is rotatably mounted on the insert 8 and has one end 26 on the plate 24 and is articulated with its other end 27 on the rack 10 . When the rack 10 is moved in the contacting direction II by rotating the shaft 11 , the lever 25 is pivoted about its pivot point 28 and the plate 24 is thereby pushed in front of the passage opening 23 ( FIG. 3). With the rack 10 moved out , that is to say in the test position of the plug 7 , the insertion of a key through the passage opening 23 and since twisting of the threaded shaft 21 is prevented. Thus, contacts 3 and 4 cannot be connected to the associated connection contacts in the test position. This is only possible if the plug 7 was previously brought back into the zero position.

In the area of the plug 7 there is also a hook 29 which, together with the plug 7 , is laterally extended from the insert 1 when the shaft 11 or the threaded shaft 21 are rotated. The hook 29 cooperates with a stop which is provided on a door, not shown here, which is articulated on the slide-in frame and covers the slide-in 1 . This blocks the door from opening in the test position and in the operating position.

A leaf spring 29 a fastened to the door serves as a stop with an opening in which the hook 29 engages. For emergency opening of the door, the leaf spring 29 a can be pivoted with a tool which can be inserted through an opening in the door or between the door and the slide-in frame, so that the hook 29 is released. With this configuration, the door can also be opened in test or operating position in emergencies.

In the second embodiment, the insert comprises the actuators shown in FIGS. 5 to 8. In a housing 30 a first drive rod 31 and a second drive rod 32 are guided parallel to one another since Lich. The two drive rods 31 and 32 each have a row of holes 33 , 34 , in each of which a gear 35 , 36 engages, which is rotatably mounted in the housing 30 . By rotating the gears 35 and 36 , the drive rods 31 and 32 are moved in the housing 30 .

The first drive rod 31 and the second drive rod 32 each engage on one leg 37 , 38 of a pivotally mounted in the housing 30 th angle lever 39 , 40 , the other leg 41 , 42 in the insert existing counter contacts moved relative to the insert to them to be connected with connecting contacts in the slide-in frame. The two contacting directions of the first and the second counter contacts run with each other in the same direction and perpendicular to the direction of movement of the two drive rods 31 and 32 , which in turn are moved for actuation with one another in the opposite direction.

The second gear 36 is rotatably mounted in a frame 43 which is displaceably guided in the housing 30 parallel to the second drive rod 32 . On this frame 43 , a third drive rod 44 is articulated, which is arranged between the first drive rod 31 and the second drive rod 32 and pa rallel to these. The third drive rod 44 also has a row of holes 45 . The first gear 35 engages in this row of holes 45 such that the third drive rod 44 is displaced in the actuating direction of the second drive rod 32 when the first gear 35 is rotated. As a result, when the first gear 35 is rotated, the first drive rod 31 and the second drive rod 32 are simultaneously moved in the actuation direction, that is to say both the first mating contacts are connected to the first connecting contacts and the second mating contacts are connected to the two connecting contacts.

The two gears 35 and 36 are each provided on the end face with a square recess 46 , 47 , into which a square wrench for rotating the gears 35 , 36 can be inserted. At least the second gear 36 is provided with an anti-rotation device which is released when the key is inserted. This ensures that the second gear 36 does not rotate when displaced by the third drive rod 44 , but rather takes the second drive rod 32 with it and thereby actuates the angle lever 40 .

By turning the second gear 36 by means of a key, the second drive rod 32 is moved downward alone and thereby the second angle lever 40 is pivoted such that its second leg 42 , as shown in FIG. 7, moves backward in the image plane and the second Counter contacts moved relative to the insert. This is the test position. By rotating the first gear 35 on the one hand the first drive rod 31 is moved up and thereby the first Winkelhe bel 39 is pivoted such that its second leg 41 , as shown in Fig. 8, moves backward in the plane of the drawing and the first counter contacts relatively moved to the slot. At the same time by rotating the first gear 35, the third drive rod 44 and with this the second gear 36 is moved down. The second gear 36 takes the second drive rod 32 , so that this is also moved down and the second angle lever 38 is pivoted such that its second leg 42 is pivoted back again in the plane of the drawing ver and thereby also the second counter contacts relative to Insert moves. This is the operating position.

On the central drive rod 44 , a plate 48 and a window 49 are arranged, which are moved when the third drive rod 44 is moved. When the drive rod 44 is pushed down, the plate 48 covers the opening in front of the square recess 47 of the second toothed wheel 36 and thereby prevents the insertion of a key into the opening of the second toothed wheel 36 . In addition, an I appears behind the window 49 when the third drive rod 44 is moving downward, instead of a 0, as an indication of the operating position of the insert. The second gear 36 can therefore only be actuated in the zero position. Instead of the numerical display, other displays, for example color symbols, can also be used.

The plate 48 has a chamfer, not shown here, and can be pivoted relative to the third drive rod 44 in such a way that it covers the square opening 46 of the first gearwheel 35 when pivoted.

On the second drive rod 32 , a nose, also not shown, is provided, which cooperates with the run-up slope and when the second drive rod 32 is pushed, the plate 48 is pivoted in front of the opening 46 of the first gear 35 . If the second gear 36 is rotated, that is to say in the test position of the insert, this prevents the insertion of a key into the first gear 35 . The first gear 35 can therefore only be turned when the insert is in the zero position. That is, the second gear 36 must first be turned back before the second gear 35 can be rotated ver to switch on the operating state.

The second embodiment represents a particularly compact tangle Chung of the invention, thus prevents incorrect operation and that Arcing occurs by setting the operating position the slot is only possible after resetting it, if the slot was previously in test position.  

Reference list

1

Insert

2nd

Back wall

3rd

Contact

4th

Contact

5

Contact slide

6

Contact rail

7

Control plug

8th

commitment

9

carrier

10th

Rack

11

wave

12th

Front wall

13

Front wall

14

Passage opening

15

Passage opening

16

Angle lever

17th

Thigh of

16

18th

Pivot point of

16

19th

Thigh of

16

20th

first slider

21

Threaded shaft

22

second slide

23

Passage opening

24th

plate

25th

lever

26

End of

25th

27

End of

25th

28

pivot point

29

hook

29

a leaf spring

30th

casing

31

first drive rod

32

second drive rod

33

Row of holes

34

Row of holes

35

first gear

36

second gear

37

leg

38

leg

39

Angle lever

40

Angle lever

41

leg

42

leg

43

frame

44

third drive rod

45

Row of holes

46

Square recess

47

Square recess

48

plate

49

window
I direction of contact from

3rd

,

4th

II Direction of contacting

7

Claims (21)

1. Electrical switchgear with a plurality of slide-in compartments having slide-in frames, in which switchgear-carrying inserts ( 1 ) can be inserted, with ge in the slide-in frame held first connection contacts and on the inserts provided first mating contacts ( 3 , 4 ), which together Closing a main circuit are electrically connectable by the first counter contacts ( 3 , 4 ) by means of a first actuating member ( 21 , 22 ) relative to the insert ( 1 ) in the direction of the terminal contacts are shifted, as well as with the second terminal contacts held in the insert frame and on the insert ( 1 ) existing second counter-contacts ( 7 ), which can be electrically connected to one another to close a secondary circuit, in particular a test circuit, by the second counter-contacts ( 7 ) by means of a second actuating member ( 10 , 11 ) relative to the insert ( 1 ) in Direction towards the second contacts, wherein the first actuator ( 21 , 22 ) preferably also acts on the second counter-contacts ( 7 ) in order to close the secondary circuit at the same time as the main circuit, characterized in that a blocking device ( 24 ) is provided, which is in contact with second connection contacts and second counter contacts ( 7 ) prevent contacting of the first counter contacts ( 3 , 4 ) with the first connection contacts. 2. Electrical switchgear according to claim 1, characterized in that a second blocking device ( 13 , 14 ) is provided, which prevents contact of the first mating contacts and first mating contacts ( 3 , 4 ) from releasing the second mating contacts ( 7 ) from the second mating contacts . 3. Electrical switchgear according to claim 1 or 2, characterized, that mechanical blocking devices are provided. 4. Electrical switchgear according to claim 3, characterized in that the actuating members each comprise a key and a lock part, and that the access opening ( 23 ) of the lock part for the key for blocking by a slide ( 24 ) is blocking bar. 5. Electrical switchgear according to claim 4, characterized, that both locks can be operated with one and the same key are.   6. Electrical switchgear according to one of the preceding Ansprü surface, characterized in that display means are provided by which the actuation state of the insert ( 1 ) can be displayed. 7. Electrical switchgear according to one of the preceding Ansprü surface, characterized in that the first actuating member comprises a preferably by a key sel, in particular square wrench, rotatable threaded shaft ( 21 ) through which the first mating contacts ( 3 , 4 ) relative to the insert ( 1 ) moved and thereby brought into contact with the first connection contacts of the slide-in frame and which at the same time pivoted an angle lever ( 16 ) which is coupled with its one leg ( 19 ) to a slide ( 20 ) on the shaft ( 21 ) guided rotor ( 20 ) and with its other leg ( 17 ) pushes the second counter contacts ( 7 ) relative to the insert ( 1 ) and thereby brings them into engagement with the second connection contacts. 8. Electrical switchgear according to claim 7, characterized in that in the insert ( 1 ) a transverse to the insertion direction ( 1 ) ver slidable insert ( 8 ) is provided which carries the second counter contacts ( 7 ) and upon actuation of the first actuator ( 21 ) is moved in the contacting direction (II), the second counter-contacts ( 7 ) in turn being displaceably guided on the insert ( 1 ) in the contacting direction (II) and being displaceable by actuating the second actuating member ( 11 ). 9. Electrical switchgear according to claim 8, characterized in that the insert ( 1 ) and the displaceable insert ( 8 ) on the front side have an end wall ( 12 , 13 ) each having a passage opening ( 14 , 15 ) for the key, which aligned with each other in the zero position, but are shifted relative to one another in the actuating position of the first actuating member ( 21 ). 10. Electrical switchgear according to claim 8 or 9, characterized in that the second actuating member comprises a shaft ( 11 ) through which che a rack ( 10 ) in the contacting direction (II) of the second counter-contacts ( 7 ) is displaceable, which on the one hand to the second mating contacts ( 7 ) and, on the other hand, engages on one end ( 27 ) of a pivoting lever ( 25 ), at the other end ( 26 ) of which a slide ( 24 ) is articulated, which on the inside of the front end wall ( 13 ) of the insert ( 1 ) is guided parallel to this and upon actuation of the second actuating member ( 11 ) which covers a passage opening ( 23 ) in the end wall ( 13 ) of an insert ( 1 ) for the key for actuating the threaded shaft, while releasing it in the zero position. 11. Electrical switchgear according to claim 10, characterized in that the shaft ( 11 ) is blocked against rotation as long as no key is inserted. 12. Electrical switchgear surface according to one of the preceding claims, characterized in that the insert ( 1 ) can be covered by a door attached to the insert frame and that a locking element ( 29 ) is provided which opens the door when the first and / or second contacts ( 3 , 4 , 7 ) prevented. 13. Electrical switchgear according to claim 12, characterized in that as a locking element on the insert ( 8 ) arranged hook ( 29 ) serves which interacts with a provided on the door impact. 14. Electrical switchgear according to claim 13, characterized in that a leaf spring ( 29 a) with an opening serves as a stop, in which the hook ( 29 ) engages, and that the leaf spring ( 29 a) for an emergency release by means of an opening in the door or between the door and slide-in insertable aids is pivoted away. 15. Electrical switchgear according to one of claims 1 to 6, characterized in that the two actuating members each comprise a push rod guided in the insert ver ( 31 , 32 ), of which the egg ne the first counter contacts and the other the second counter contacts in Contacting direction moves, as well as each with the drive rod ( 31 , 32 ) in engagement, rotatably mounted gear GE ( 35 , 36 ) via which the associated drive rod ( 31 , 32 ) can be actuated. 16. Electrical switchgear according to claim 15, characterized in that the drive rods ( 31 , 32 ) each on one leg ( 37 , 38 ) egg nes angularly mounted in the insert angular lever ( 39 , 40 ) angrei fen, the other leg ( 41 , 42nd ) is coupled to the first and second mating contacts. 17. Electrical switchgear according to claim 15 or 16, characterized in that the second gear ( 36 ) in a slide parallel to the second drive rod ( 32 ) slidably guided frame ( 43 ) is arranged, to which a third drive rod ( 44 ) is coupled which is in engagement with the first gear ( 35 ) and at the same time is moved by the latter with the first drive rod ( 31 ). 18. Electrical switchgear according to claim 17, characterized in that the gears ( 35 , 36 ) can be actuated by means of a key and are secured against rotation when the key is removed. 19. Electrical switchgear according to claim 18, characterized in that the gears ( 35 , 36 ) have a central receptacle ( 46 , 47 ) for the key, in particular square key, and that the receptacles ( 46 , 47 ) by means of a plate ( 48 ) can be covered. 20. Electrical switchgear according to one of claims 15 to 19, characterized, that the contacting directions of the first and second counter contacts are the same, especially both in one direction of thrust. 21. Electrical switchgear according to one of claims 15 to 20, characterized in that the display device and the plate ( 48 ) via the drive rods ( 32 , 44 ) can be actuated.