FI84411C - FELSTROEMS- OCH LEDNINGSSKYDDSAVBRYTARE. - Google Patents

Description

1 84411

RCD and circuit breaker

The invention relates to a residual current device and a circuit breaker having a center conductor circuit breaker with a movable contact bridge, a circuit breaker circuit breaker-5 in one part of the housing and movable contact arms and a center conductor circuit breaker in the second part of the housing to which a transmission member is connected.

It is known to mechanically connect several circuit breakers when monitoring multi-phase conductors 10 by means of operating buttons protruding from the circuit breaker housing, where the tripping mechanisms are also connected to each other.

The tripping of at least one circuit breaker is conditional on the tripping of either its magnetic trigger or the bimetallic trigger, in which case the other circuit breakers also open. When only the end conductor needs to be monitored, it is not necessary to equip the center conductor with a complete line protection circuit breaker with mechanics, magnetic trigger and bimetal trigger. Thus, it has already been proposed to mechanically connect a contact device of a middle conductor circuit breaker with a contact device of at least one extreme conductor circuit breaker.

A circuit breaker with a mandatory all-pole -... · off switch is known from DE-AS

15 63 919 · This known circuit breaker is provided with 25 transfer members in the grooves of adjacent housing halves. One disadvantage of such a known: protective circuit is that the actuator of the circuit breaker with its extensions acting as a transfer member must be led out.

A circuit breaker in which the contact of the contact device 30 of the circuit breaker is possible without changing the structure of the circuit breaker is known from AT-PS 378 283. This circuit breaker, also known from EP-A1 149 i * 41, in which the circuit breaker has Fig. 35 The connecting bridge is connected on the second side wall of the housing over the transfer member of the center conductor circuit breaker with a movable contact. The transfer member has at least one mobile 2 84411 '! i a protrusion which engages the contact of the center line circuit breaker and an extension formed by one pin, which is at the same time articulated.

With a bearing bolt, the contact bridge and its actuator 1

Ii. It is an object of the invention, once with such a circuit breaker in the additional functions of the RCD, to take advantage of the connection formed by the transfer element between the connection bridge with the bime trigger and the arc extinguishing device and the simple unprotected connection strip 10 (center conductor circuit breaker).

According to the invention, this object is solved in that the permanent magnet trigger of the RCD has a pivotally mounted lever in the housing, which one end of the lever has a permanent magnet trigger and the other end of the lever the transfer member is provided with an appendage which moves the actuator against the force of the spring provided therein by moving the contact arm of the center line switch for positioning in the closed position, whereby the lever provided for the permanent magnet release moves to the correct position.

The switch according to the invention provides::; line protection and RCD without the need for RCD operation to operate the contact device. separate mechanics. Rather, in the event of a trip, the magnetic trigger of the RCD immediately releases the lever and actuator from the line protection mechanics. By means of a pin on the transfer member, the actuator is returned to the open state again after the next 30 trips by means of a transfer member which can be mounted with the lever of the magnetic trigger. It can thus be reconnected with a single switch-on button of the transmission element without the need for special measures for the RCD. 35 for mutual positioning of the lever and the actuator, as this follows automatically after triggering.

In one embodiment of the invention, the trigger of the permanent magnet trigger is provided to a pivoted bearing return consisting of a double-arm lever, wherein the arm of the return having a permanent magnet trigger is mainly on the hairpin-shaped spring 5 the second arm is lifted from the trigger pin of the permanent magnet trigger by the pin of the transfer member in the closed position. In this embodiment, another operation of the transfer member is achieved, in which the reset is raised by means of the transfer member of the circuit breaker on so that the trigger of the permanent magnet trigger can act on the latch base.

Thus, after the next trip and the return of the transfer member, the trigger of the permanent magnet trigger is pressed down in the open position by the return spring using the return spring.

In a practical embodiment, it can be presented according to the invention that one and the same pin on the transfer member is provided on the one hand for the actuator displacement and on the other hand 20 for the return and a pin is arranged between the actuator extension and the return branch. Thus, a space-saving device and structural simplification are required because one component fulfills two functions.

Within the scope of the invention, it can further be shown that the actuator, in the open position, under the action of a spring arranged on it, is located on a shoulder attached to the housing. Thus, the shaft of the actuator retracts and the transfer range becomes limited so that the backward movement of the actuator at the position positioned by the lever is simpler.

The invention further relates to a residual current and circuit breaker having a center line circuit breaker, wherein a movable bridge of a circuit breaker arranged in a second housing part is connected with a movable switch arm through a housing spacing to a center conductor circuit breaker in the second housing part.

It is a further object of the invention to provide a coupling formed once by such a transfer member, which is a coupling 4 84411 | a shielded coupling part with a bimetallic trigger and an arc extinguishing device and a simple unshielded coupling part (center conductor circuit breaker)

Iissa, introduction of additional functions of RCD.

According to a solution of the invention, this task is solved in such a way that a test circuit known per se has a test button, two test contacts and a test contact spring, where one part of the test contact spring is on the test contact 10 and one the transfer member is lifted from the contact.

By the operation of the transfer member according to the invention, the test circuit known per se is closed by means of two test contact springs 15 which control the two test contacts. At the same time, it is guaranteed that, despite the operation of the test button, the contact is only closed when the circuit breaker and thus the transfer member are in the corresponding position. This prevents damage to the circuit breaker even when the test button is pressed for a longer time.

EP-A1-0 144 691 discloses a circuit breaker with a contact position indication. The known contact position indicator is immediately connected to the movable contact of the circuit breaker.

It is also an object of the invention to provide fault current and conduction; a circuit breaker with a central conductor circuit breaker having a movable jumper for a circuit breaker in one housing part and a movable contact arm for a central conductor circuit breaker in the second housing part with a transfer member through a housing partition with an unprotected connection part (center conductor circuit breaker) to perform additional functions.

According to another modification of the invention, the task is solved in that the housing part containing the RCD has a contact position indicator known per se, which is movably mounted 5,84411 and one end is placed next to the window in the housing and the other end is connected to the contact position indicator.

5 An exemplary two-color externally visible contact position indicator through a window is operated directly by the transfer member and, in accordance with the example, gives the contact hardware closed or open positions in red and green.

Other details of the invention will become apparent from the following description of an exemplary embodiment, taken in conjunction with the accompanying drawings. The drawing shows in Fig. 1 the residual current device and the circuit breaker of the central conductor of the housing part in the open position, in Fig. 2 the circuit breaker of Fig. 1 in the closed position, in Fig. 3 the circuit breaker of Figs. 1 and 2 at tripping the permanent magnet trigger and FIG.

Before looking at the details of the description, it should be noted that the invisible housing part of the circuit breaker in the figures may be, for example, the device structure shown and described in AT-PS 378 283 or EP-A1-1W41. In this connection, it is preferred that the transfer member of the visible housing part of the drawing is connected to a circuit breaker, as described in AT-PS 378 283 or EP-A1-149441.

The permanent magnetic trigger used as a residual current device shown in the drawing can be, for example, an airtight magnetic trigger known from EP-A2-154 619.

Although the connection of the transfer member to the line protection section is shown as described in AT-PS 378 283, the invention is not limited to this embodiment, but any other possibility of connecting the transfer member to the tripping mechanism or the circuit breaker bridge as long as directly or indirectly implemented is useful.

An embodiment of the circuit breaker 6 84411 ί according to the invention described below is a two-module-wide fault current / circuit breaker which is independent of the mains voltage and which can be actuated by a single switch button. The circuit breaker comprises (not shown) a shielded coupling part with a bimetal-5 li-magnetic trip and an arc extinguishing device (line circuit breaker) and a simple unshielded coupling part (for neutral), in which the movable jumpers of both coupling parts are connected by coupling. The fault current protection is heard by a permanent magnet trigger, which in the event of a fault receives the energy required for tripping through both coupling parts which pass through a differential converter (sum current transformer).

The housing 1 houses a permanent magnet trigger 2 which, in the event of a fault 15, receives the energy required for tripping from a summing current transformer 5 pierced by both conductor strips 3 and 4. The conductor strip 3 in the visible housing part consists of a center conductor (neutral) and is connected to a contact device 6.

The movable contact bridge 6 is connected via a connection formed by the transfer member 7 directly or indirectly to the invisible contact bridge of the circuit breaker, so that the movable contact bridge 6 follows the movement of the connection bridge of the circuit breaker.

The housing 1 has a lever 8 pivoting about a bearing pin 36, from which a connection is provided to the trip pin 9 of the permanent magnet trigger 2 via an end part 11. The second end part 12 of the lever, which has a cantilevered configuration 13, comes into contact with the extension 30 15 of the actuator 14 in the closed position (cf. Fig. 2). The actuator 14 is mounted in the circuit breaker for pivoting about a shaft 16. By positioning the protruding part: 13 with the insert 15, the movement of the actuator 14 is prevented by the action of the release spring 17. The actuator 14 includes a pin 18 projecting through a partition 35 between the two housing parts, which in the event of a tripping engages the latch base (not visible) of the circuit breaker so that the tripping mechanism operates.

7 84411

As can be seen from Fig. 1, the actuator 14 is actuated by a pin 19 in the transfer member 7, which acts on the extension part 20 of the actuator in the open position against the action of the release spring 17, whereby the position of the lever 8 differs from its previous position.

The pin 19 of the transfer member 7, in turn, has an end portion of the pause release 21 of the permanent magnet trigger 2 pivotable about the end of the bearing pin 10. This return 21 is under the action of a return spring 22 which presses the end portion 23 of the return 21 arranged on the trip pin 9 of the permanent magnet trigger 2 against the trip pin 9 when the circuit breaker is in the open position. In the closed position, the return 21 deviates from the pin 19 of the transfer member 7 against the action of the return spring 22, so that the end portion 23 of the return 21 is not left on the trip pin 9. In this position shown in Fig. 2, the lever 8 is held only in the position reached by the support spring shown in Fig. 3 on the trigger pin 9 of the permanent magnet trigger 2.

The circuit breaker according to the invention is further provided with a contact position indicator 26 pivotable around the coil pin 25. This contact position indicator 26 is visible from the outside through a window 27, from which the window in the open position shown in Fig. 1 has a green field of the contact position indicator field visible. The contact position indicator 26 is actuated from the transfer member 7 by means of an operating pin 28 which engages in an open slot 28 'on one side in a kind of "pin-slot" connection of the contact position indicator 26. It can be seen that on the basis of this arrangement 30, as the transfer member 7 moves back and forth, the contact position indicator 26 moves back and forth.

In said RCD, the housing part of the RCD / line circuit breaker according to the invention shown in the drawing is also provided with a test circuit. This test circuit 35 includes two test contacts 29 and 39 and one substantially U-bent test contact spring 30. The second branch 31 of the test contact spring 30 can be connected to the test contact 29 by means of a test button 32]. The second branch 33 of the test contact spring 30 is in the closed position, i.e. when the movable contact bridges have closed both connection strips, with the test contact 39 · As shown in Fig. 3, the branch 33 of the test contact spring 30 is taken between the operating pins 3 * 1 and 35 of the two transfer members 7. . From there, the branch 33 is lifted out of the test contact 39 by means of the operating pin 35 when the circuit breaker is in the open position (Fig. 1). Thus, the movement 10 of the transfer member 7 is further utilized in disconnecting the test circuit as soon as the tripping - always for whatever reason, e.g. by pressing the test button 32 - follows. This prevents damage to the circuit breaker due to too long closing of the test circuit.

The operation of the RCD / circuit breaker according to the invention will be described below: Starting from the closed position shown in Fig. 2, the red field of the pointer 26 and the branch 33 of the test contact spring are via the operating pin 34 on the test contact 39, the circuit breaker is triggered, for example, by using the test button 32. By means of the operation of the test button 32, the branch 31 of the test contact spring 30 bends on the test contact 29 (Fig. 3) so that the test circuit is closed. Thus, the permanent magnet trigger 2 is triggered and the lever 8 moves against the force of its support spring 24 around the bearing pin 36, releasing the actuator 14 extension 15 from the lever 8 and the actuator 14 moving in the position shown in Fig. 3 by the trigger spring 17. against. Through the movement of this actuator 14, the pin 18 of the actuator 14 acts on the latch base of the circuit breaker 35 to trigger the tripping mechanism. When the tripping mechanism is tripped, the circuit breaker ends up in the open position shown in Fig. 1.

9 84411

When the transfer member 7 moves up as a result of the connection of the circuit breaker, the reset 21 is mainly released and can reactivate the permanent magnet trigger 2 again by depressing the release pin 9 under the action of the reset spring 22.

The pin 19 of the transfer member 7 moves upwards to the point 20 of the extension 14 of the actuator 14 so that this release spring 17, when pressed in repositioning with the lever 8, which has meanwhile moved back under the action of the support spring 24, moves to the prepared state 10.

Further, the branch 33 of the test contact spring 30 is lifted from the test contact 39 by the operating pin 35 of the transfer member 7 so that the test circuit cannot be turned on despite the operation of the test button 32 and the branch 15 of the test contact spring 30.

Furthermore, the switching position indicator 26 moves under the action of the actuator pin 28 so that its green field can now be seen through the window 27.

The operation of the switch button 38 can be used to move the switch-20 and again to the closed position shown in Fig. 2. With the residual current device / circuit breaker according to the invention, it is also possible to perform a free trip. This is shown in Fig. 4. The coupling button 38 is not yet completely in the position corresponding to the fully closed position, however, the movable kos-25 chain bridge 6 is already closed. This position also occurs, for example, with welded contacts. Although the transfer member 7 is not yet in its fully closed position, the insert 15 of the actuator 14 is at the point where the coupling part of the end conductor is locked. Correspondingly, the pawl 21 of the pa-30 has already been raised by means of the pin 19 to such an extent that the trigger window 9 of the permanent magnet trigger 2 can deviate from the lever 8 to cause a position difference between the lever 8 and the actuator 14, i. between the appendix 15 of the actuator 14 and the outer shape 15 of the lever 8.

In this position, the red field of the switching position indicator 26 can be seen from the outside through the window 27 (for the sake of clarity, the switching position indicator 26 is not shown in Figs. 3 and 4).

Claims (13)

1. Fault current and conductor protection switch, which has a center conductor switch with a movable contact bridge, at one housing part a conductor protection switch with a movable contact arm and at the other housing part a center conductor switch to which a moving means (7) led through the housing partition is connected. characterized in that, with the permanent magnet trigger (2) of the fault current protection, an arm (8) pivotally mounted in the housing is provided, one end (11) of which arm (8) has a release pin (9) for the permanent magnet trigger (2) and the arm (8). second end (12) stays in the closed position of the switch in communication with a spring loaded actuator (14) which joins the locking support of the conductor protection switch pin (18), and that the moving member (7) has a pin (19) which moves the actuator ( 14) against the force of a spring (17) provided at this point where the contactor arm (6) of the center conductor is moved for mounting in the closed on position, the arm (2) provided arm (8) is moved to its proper position. Switch according to Claim 1, characterized in that the release pin (9) of the permanent magnet trigger (2) is arranged at a pivotally mounted reset switch (21) formed by a double-arm lever, the arm (23) of the switch (21). provided at the permanent magnet trigger (2) under the influence of an almost spring-shaped spring (22) which moves the permanent magnet trigger (2) of the ether (21) on top of the trigger pin (9) and the other arm of the adjuster (21) being lifted place the pin (7) arranged in the closed position from the release pin (9) of the permanent magnet trigger (2). Switch according to claim 2, characterized in that one and the same pin (19) is arranged at the moving means (7) for moving one side of the operating means (14) and on the other side the reset (21) and a pin (19) is arranged between the extension (20) of the actuator (14) and the adjuster (21). Switch according to any of claims 1-3, characterized in that on the movable end (12) of the actuator (14) of the arm (8) of the actuator (14) there is a support spring (24), which is preferably a coil spring and which is poured under the influence of the lever (8) on the release pin (9) of the permanent magnet trigger (2). Switch according to any of the claims 1-4, characterized in that the actuator (14) is in its open position under the influence of the spring (17) arranged thereon by a stop (37) attached to the housing. 6. A fault current and conductor protection switch according to any of claims 1-5, which comprises a center conductor switch, in which the movable coupling bridge of the conductor protection switch arranged at one housing part is coupled with the movable switching arm 20 over the moving means which is passed through the intermediate housing between the second housing part, characterized in that in the housing part (1) which exhibits the fault current protection there is a per se known switching position indicator (26) stored movably and at one end of which is placed at a window (27) in the housing (1) and the other end is connected to the moving means (7) to actuate the switch position indicator (26). Switch according to Claim 6, characterized in that the switch position indicator (26) is arranged as a cross-arm, swingable lever around a bearing pin (25), in which the lever coupled to the moving member (7) is a lever. (28 ') which the moving member s (7) pin (28) engages. Switch according to claim 7, characterized in that the screen arranged at the switch position indicator (26) contains a gap (29) open at one end thereof. is 8441 1 9. Fault current and conductor protection switch according to any of claims 1-8, which has a center conductor switch, in which the movable coupling bridge of the conductor protection switch arranged at the housing part is coupled to the movable coupling array at the center conductor switch in the second housing part as a displacement means. the intermediate wall of the housing, characterized in that with a test circuit known per se, which comprises a test button (32), two test contacts 10 (29) and (39) and a test contact spring (30), a part (31) of the test contact spring ( 30), by the action of the test button (32), can be placed in place on one of this provided test contact (29), and that a second part (33) of the test contact spring is at a second test contact (39) and can be lifted with open contact (6). by means of the moving means (7) away from the test contact (39). Switch according to Claim 9, characterized in that the test contact (39) is bent 20. substantially U-shaped, that on one of the legs (31) of the test contact spring (30) and the other leg (33) the displacement means (7) engages. Switch according to claim 9 or 10, characterized in that the moving means (25) has a pin (35) which lifts the leg (33) of the test spring (30) connected to the moving contact (39) of the test contact (39) where the contact (6) opens. Switch according to claims 9-11, characterized in that the moving member (7) has another pin (34) which presses a leg (33) at a test contact spring (30) coupled with elastic forming against a moving contact spring (30). the test switch (39). 35