WO2005031778A1

WO2005031778A1 - Protective circuit breaker

Info

Publication number: WO2005031778A1
Application number: PCT/AT2004/000303
Authority: WO
Inventors: Adolf Tetik; Johannes Grillmayer
Original assignee: Moeller Gebäudeautomation KG
Priority date: 2003-10-01
Filing date: 2004-09-06
Publication date: 2005-04-07
Also published as: DE502004006272D1; AT503744A1; AT512503A5; AT503744B1; EP1671342A1; EP1671342B1; AT512503B1

Abstract

A protective circuit breaker, particularly a fault current protective circuit breaker, comprising a first display (1) of a circuit state. The aim of the invention is to enable a quicker and simpler fault search. For this reason, a second tripping-type display (2) is provided.

Description

breaker

The invention relates to a circuit breaker, in particular residual current circuit breaker, with a first display of the switching state.

In known circuit breakers of this type with a first display of the switching state, it is immediately apparent whether two corresponding connections of the circuit breaker in the

Circuit breakers are electrically connected. This enables quick and easy

Determine whether a line is connected to a power supply, which in particular

Maintenance and or installation work can be carried out safely. such

Circuit breakers can be switched off essentially in two ways, on the one hand manually by means of an operating lever and on the other hand electrically by responding to the

Circuit breaker. The disadvantage here is that e.g. for subsequent maintenance and / or

Repair does not show whether the circuit breaker was triggered manually or electrically.

The object of the invention is to provide circuit breakers of the type mentioned, in which the known disadvantages are avoided, the subsequent detection of the type of

Triggering enabled, which is as compact as possible and is easy to manufacture.

This is achieved according to the invention in that a second display of the type of triggering is provided.

This has the advantage that it can be determined in a simple manner whether the circuit breaker has been triggered manually or electrically, as a result of which, in particular, maintenance work can be made more efficient.

In a continuation of the invention it can be provided that the first display and the second

Display a common window of a housing of the circuit breaker are assigned.

This arrangement enables a compact design in which the condition of the

Circuit breaker and the type of tripping can be determined.

According to a further embodiment of the invention it can be provided that the first

Display comprise a first swivel element and the second display comprise a second swivel element and that the first swivel element and the second swivel element are arranged on a common swivel axis, which makes it particularly simple

Design of the first display and the second display is made possible. In a further embodiment of the invention it can be provided that the first pivoting element is designed as a lever with a link, wherein a slide connected to a shift drum engages in the link. By coupling the first swivel element to the shift drum, a reliable display of the switching state can be ensured. According to another embodiment of the invention, it can be provided that the second pivot element is pretensioned by means of a spring element, as a result of which the kinetic energy for the pivoting of the second pivot element is provided by the spring element.

According to a further embodiment of the invention, it can be provided that a release device is provided, that the release device has an extension which can be brought into engagement with a catch of the second swivel element, and that the extension can be brought out of engagement with the catch by means of an actuating element. By means of the actuating element, pivoting of the second pivoting element can be achieved, only the catch having to be released.

In this context, it can be provided in a further development of the invention that the triggering device can be pivoted about an axis of rotation. This represents a particularly simple embodiment of the triggering device.

Another feature of the invention can be that the spring element is supported on the triggering device. In this way, the triggering device and the second pivoting element can be loaded against one another by means of the spring element, as a result of which the latched position is stabilized and the reliability of the second display is increased. According to another embodiment of the invention, it can be provided that a switching lock is provided with a pawl, and that an engaging element acting with the actuating element is formed on the pawl. It can be provided that the engaging element comes into contact with the actuating element when the circuit breaker is triggered electrically, but not when it is triggered manually, as a result of which selective actuation of the actuating element can be ensured in a simple manner. In a further development of the invention it can be provided that the first pivoting element comprises a driver element and the second pivoting element has a stop cooperating with the driver element, whereby the resetting of the second display can be ensured when the circuit breaker is switched on and when the circuit breaker is triggered Circuit breaker a relative movement of the first display compared to the second display is made possible.

Pivot element, the second pivot element, the spring element and the triggering device are arranged in a display module, the display module being prefabricated in the

Circuit breaker can be inserted. This enables a particularly simple and inexpensive

Manufacture in which the display module is manufactured separately and then in the

Circuit breaker is used.

The invention will be described with reference to the accompanying drawings, in which

Embodiments are shown, described in more detail. It shows:

Figure 1 is an oblique view of components of a circuit breaker according to the invention, which comprise a first display, a second display, a switch lock and a switching drum.

FIG. 2 shows a side view of the components according to FIG. 1;

3 and 4 are each an oblique view of the components of FIG. 1, the

Key switch and the second display have been removed;

5 to 7 each show an oblique view of a display module and a fastening module;

8 and 9 each show an exploded view of the display module and

Fastening module according to Fig. 5;

Fig. 10 is an oblique view of the display module of FIG. 5 with a pawl and one

slide;

FIGS. 11 and 12 the display module and the pawl according to FIG. 10 with the first display removed;

13 and 14, the first display, the second display, the trigger device and

slide;

15 is a top view of the display module;

16 shows the section AA of the display module according to FIG. 15;

17 to 20 the first display, the second display, the triggering device and the

Slide in different positions; and

Fig. 21 is an oblique view of a circuit breaker according to the invention.

1 shows components for a circuit breaker, the circuit breaker in particular being a residual current circuit breaker. The circuit breaker has a first display 1 of the switching state, which is preferably viewed through a window in the upper shell of the circuit breaker in the assembled state of the circuit breaker can. The first display shows immediately whether contacts in the circuit breaker are closed and the corresponding connection terminals of the circuit breaker are conductively connected to one another. This enables the switching status of the system to be determined quickly, easily and reliably in a switch box. This is an advantage in particular for maintenance and / or installation work to determine whether a line is connected to a power supply or whether it is de-energized.

In a circuit breaker according to the invention, a second display 2 of the type of tripping is also provided. The second display 2 indicates whether the triggering was carried out manually by means of an actuating lever 92 or electrically. This makes it easy and reliable to determine whether the circuit breaker is due to an electrical fault, in particular a fault current, or manually, e.g. was triggered by an act of sabotage or the like. If manual triggering is found, it is often not necessary to consult an electrician, but the circuit breaker can be switched on again immediately.

During maintenance work involving several electricians, it is clear to everyone whether a circuit breaker has been triggered manually or electrically. If a circuit breaker is triggered electrically by one of the lines on which one of the electricians is working, the risk is reduced that an incorrect circuit breaker is erroneously switched on and another electrician is endangered.

If several circuit breakers are arranged in a system and the other circuit breakers are triggered manually as a precaution after one of the circuit breakers has been triggered, the second display 2 can be used to determine in a simple and reliable manner which one of the circuit breakers has triggered electrically, which considerably simplifies troubleshooting. In the embodiment shown in FIG. 1, the first display 1 and the second display 2 are arranged side by side and adjacent to one another. This makes it possible to assign the first display 1 and the second display 2 to a common window 91 of the housing of the circuit breaker, the common window 91 being able to be arranged in particular in the upper shell. An embodiment of the common window 91 can be seen in FIG. 21.

The first display 1 comprises a first swivel element 11 and the second display 2 comprises a second swivel element 21. The swivel elements 11, 21 can be easily supported and point towards elements which cause a translational displacement of the first display 1 and / or the second display 2 , a simpler construction. A particularly simple and compact design can be achieved if the first

Pivot element 11 and the second pivot element 21 on a common one

Pivot axis 41 are arranged.

1 shows a side view of the components according to FIG. 1 and FIGS. 3 and 4 show an oblique view of the components according to FIG. 1, in particular a switch lock and the second display 2 having been removed in order to show the mode of operation of the first display 1 better to clarify.

The first pivot element 11 is designed as a lever 12 with a link 13 into which a slide 51 connected to a shift drum 52 engages. By turning the shift drum

52 contacts of the terminals are opened and closed in a manner known per se. Furthermore, turning the shift drum 52 causes the slide to move

51 and a pivoting of the first display 1. FIG. 3 shows the switching drum 52 in a position in which the contacts are closed and FIG. 4 in a position with the contacts open, with different areas of the circuit breaker in the common window 91 of the housing Display 1 are visible.

In this embodiment, the first display 1 is caused by a movement of the shift drum

52 and not actuated by a movement of the actuating lever 92, as a result of which the display 1 reliably indicates the state of the shift drum even if the actuating lever 92 fails.

The second pivot element 21 is prestressed by means of a spring element 42. This can be seen in particular in FIGS. 11 and 12.

Furthermore, a triggering device 3 is provided which has an extension 32 which can be brought into engagement with a catch 22 of the second swivel element 21. In the position shown in Fig. 12, the extension 32 inhibits the pivoting of the second

Swivel element 21, the spring element 42 exerting a force on the second

Swivel element 21 causes in the direction of the extension 32.

The trigger device 3 also has an actuating element 31 with which the extension

32 can be disengaged from the catch 22. If the extension 32 releases the catch 22, the spring element 42 causes the second pivot element 21 to pivot, as a result of which the area of the second display 2 which can be seen through the common window 91 is changed.

A simple storage of the trigger device 3 can be achieved if it by one

Axis of rotation 34 is pivotable. Furthermore, the spring element 42 on the Trigger device 3 be supported. As a result, in the locked position shown in FIG. 12, not only the catch 22 is pressed against the extension 32, but also the extension 32 is pressed against the catch 22, which increases the stability of the locked position and improves the reliability of the second display 2. The second display 2 can have a first spring support 23 and the triggering device 3 can have a second spring support 33.

It can be provided that the actuating element 31 is actuated when the circuit breaker is triggered electrically, but not when triggered mechanically. It is further provided that the extension 32 is brought into engagement with the catch 22 when the circuit breaker is switched on.

A selective actuation of the actuating element 31 can be achieved in a simple manner if a circuit breaker 6 or the like is provided in the circuit breaker, which has different movement sequences compared to a mechanical triggering when an electrical triggering occurs. If the actuating element 31 is arranged in one of the movement paths when triggered electrically, but not in one of the movement paths when triggered mechanically, the second pivoting element 21 is pivoted only when the trigger is electrical. In the embodiment shown, this is brought about by the provision of an engaging element 62 on a pawl 61 of the key switch 6.

In other embodiments of the circuit breaker according to the invention, the actuating element 31 can also be actuated only when triggered mechanically. When the circuit breaker is switched on, the extension 32 can be brought into engagement with the catch 22 by means of the first pivot element 11, as can be seen in particular from FIG. 16, which shows a section along the line AA in FIG. 15. The first pivot element 11 comprises a driver element 14 and the second pivot element 21 has a stop 24 which interacts with the driver element 14. The first display 1 with the driver element 14 can be seen in particular in FIG. 3. Referring to the position shown in FIG. 16, when the first pivot element 11 is pivoted counterclockwise, the second pivot element 21 is also moved due to the driver element 14 and the stop 24. If the first pivoting element 11 is pivoted clockwise, the catch 22 and the extension 32 come into engagement and if the first pivoting element 11 is pivoted further, the second pivoting element is not pivoted any further. When the circuit breaker is switched on, the first display 1 and the second display 2 are in the positions shown in FIG. 10 in the embodiment shown. After mechanical triggering, the first display 1 and the second display 2 are in the in

17 and 18 position and after electrical triggering are the first

Display 1 and the second display 2 in the position shown in FIGS. 19 and 20. As a result, the operating state and, if appropriate, the type of triggering can be reliably determined in a simple manner, in particular in the common window 91.

By arranging the first display 1 and the second display 2 in the common

Window 91 can also achieve the above-described interaction of the pivot elements 11, 21, which provides a simple design.

Furthermore, this arrangement makes it easier for the first pivot element 11 and the second

Swivel element 21, the spring element 42 and the trigger device 3 in one

Arrange display module 71, the display module 71 being prefabricated, can be inserted into the circuit breaker and can be arranged in a module housing 73.

5 to 7 are different views of an embodiment of the display module

71 and a fastening module 72, in which the slide 51 is accommodated.

The display module 71 can be manufactured and assembled separately and inserted into the circuit breaker in the assembled state, whereby a simple manufacture of the circuit breaker can be ensured.

In other embodiments, the fastening module 72 and the

Display module 71 can be combined to form a larger display module 71 which can be prefabricated into the circuit breaker.

13 and 14, the first display 1, the second display 2, the triggering device, the spring element 42 and the slide 51 are shown, whereby the operation of the first

Display 1 and the second display 2 and the interaction between the displays 1, 2 is clearly visible. The structure of the individual elements in the illustrated embodiment can be seen in particular from FIGS. 8 and 9, in which an exploded view of the

Display module 71 and the fastening module 72 is shown.

In other embodiments of the circuit breaker according to the invention, the components can also be designed differently and the claims are not only specific to this

Limited embodiment.

Claims

PATENT CLAIMS

1. Circuit breaker, in particular residual current circuit breaker, with a first display (1) of the switching state, characterized in that a second display (2) of the type of tripping is provided.

2. Circuit breaker according to claim 1, characterized in that the first display (1) and the second display (2) are assigned to a common window (91) of a housing of the circuit breaker.

3. Circuit breaker according to claim 1 or 2, characterized in that the first display (1) comprises a first pivot element (11) and the second display (2) comprise a second pivot element (21) and that the first pivot element (11) and the second Swivel element (21) are arranged on a common swivel axis (41).

4. Circuit breaker according to claim 3, characterized in that the first pivoting element (11) is designed as a lever (12) with a link (13), a slide (51) connected to a switching drum (52) in the link (13) intervenes.

5. Circuit breaker according to one of claims 1 to 4, characterized in that the second pivot element (21) is biased by means of a spring element (42).

6. Circuit breaker according to one of claims 1 to 5, characterized in that a triggering device (3) is provided in that the triggering device (3) has an extension (32) which can be brought into engagement with a catch (22) of the second pivoting element (21) , and that the extension (32) can be brought out of engagement with the catch (22) by means of an actuating element (31).

7. Circuit breaker according to claim 6, characterized in that the triggering device (3) is pivotable about an axis of rotation (34).

8. Circuit breaker according to claim 6 or 7, characterized in that the spring element (42) on the triggering device (3) is supported.

9. Circuit breaker according to claim 8, characterized in that a switching lock (6) with a pawl (61) is provided, and that on the pawl (61) with the actuating element (31) acting engagement element (62) is integrally formed.

10. Circuit breaker according to one of claims 1 to 9, characterized in that the first pivoting element (11) comprises a driver element (14) and the second pivoting element (21) has a stop (24) which interacts with the driver element (14).

11. Circuit breaker according to one of claims 6 to 10, characterized in that the first pivoting element (11), the second pivoting element (21), the spring element (42) and the triggering device (3) are arranged in a display module (71), wherein the display module (71) can be prefabricated into the circuit breaker.