DE8802393U1 - Switch combination consisting of main and auxiliary switch - Google Patents

Description

Switchgear assembly consisting of main and auxiliary switches.

10

The innovation concerns a switch combination, consisting of a main switch with switching contacts for at least one circuit and switching elements for switching them over, as well as an auxiliary switch with its own switching contacts for at least one further circuit and switching elements for switching them over, whereby the switching elements of both switches are mechanically coupled to one another. Such switch combinations are used to receive an information signal via the auxiliary switch, which provides information about the switching position or the respective function of the main switch.

An example is the case where the main switch is a circuit breaker or a residual current device that is inserted into a circuit in the usual way. The main switch can activate a signaling device, for example a light device, an acoustic device or the like, when the main switch falls into the off position. With such switch combinations, it is desirable to check from time to time whether the entire switching device is still functional or whether the absence of a signal triggered by the main switch is due to a fault in the main switch or in the main switch circuit. With the previously known

For switch combinations of this type, such a test can only be carried out by switching off the main switch and thereby taking the auxiliary switch with it. The test therefore always leads to an interruption of the main circuit, albeit a brief one.

The innovation is based on the task of

naKanan Art such

to develop a system so that the auxiliary switch can be checked without having to intervene in the switching position of the main switch. To solve this problem, it is proposed that the auxiliary switch has an additional switching element that can be operated at will, via which the switching contacts of the auxiliary switch can be switched. This additional switching element of the auxiliary switch can be a push button that can be operated from the outside or a remote-controlled relay. In the first case, the check can only be carried out at the location of the switch combination itself; in the second case, the check can be carried out from any location, for example from a control center. According to a preferred embodiment of the innovation, the movable switching contacts of the auxiliary switch are arranged on a contact carrier that can be moved against the force of a spring. When actuated, the additional switching element hits a lever, which in turn can be moved in the direction of the

Contact carrier. «Hfd 4&s additional

If the switching device (for example the push button mentioned above) is pressed, the contact carrier is moved in this way and the auxiliary switch is switched for the short time it is pressed. This has no effect on the switching position of the main switch, so that the desired control can be carried out without interfering with the main circuit.

The innovation is explained below using the attached drawing. Ks represent:

Hg. 1 a perspective view of an embodiment of a switch according to the invention

combination;
Fig. 2 shows a cross section through the Hi Ifs switch in

Initial position;

Fig. 3 shows a cross section through the auxiliary switch in the switching position.

The design of the switch combination shown in the drawing is designated as a whole with (1). The combination consists of a main switch (2) and an auxiliary switch (3). Both switches are equipped with their own switching contacts for separate circuits and with switching elements for switching them over. In the selected design, the main switch (2) has a switching lever (4) which, when switched on, has the position shown. If the main switch (2) is an overcurrent protection switch and this is triggered by exceeding the specified current strength, the switching lever (4) falls down. It can be pushed back up again after the cause of the excessive current has been eliminated and the main switch can be switched on.

The auxiliary switch (3) has a corresponding switch lever (1) which, in the selected embodiment, switches on the auxiliary switch (3) in the position shown. Both switch levers (4 and 5) are mechanically coupled to one another, for example with the aid of a connecting pin (6).

According to the innovation, the heel holder (3) has a

additional control organ (?) which can be operated arbitrarily from the outside and through which the

Switch contacts of the hoof switch (3) look around

&idigr; 6 are.

The additional switching element (7) can be - as shown in Fig. 1 - a push button that can be operated from the outside. Instead of the push button or additionally, a remote-controlled relay can be present.

A preferred embodiment as well as the functioning of the modified Hi Ifsscha Iter proposed in accordance with the innovation is explained in more detail below using Fig. 2 and 3. In these figures

First, the housing (8) of the high-voltage switch (3) is shown in a longitudinal section. Two current conduction paths (9 and 10) are preformed in this housing, but these are interrupted inside the switch. The current conduction paths each end in contacts (11, 11', 12, 12'), which can be connected to one another by contact bridges (13 and 14). These contact bridges are arranged on a common contact carrier (15), which can be moved in the direction of the double arrow (16). Depending on the position of the contact carrier, the current path (11) or the current path (12) is

% closed. The two current paths can be connected in known

way via the connection screw (17-20) into circuits. Since the switch shown in 30 is an auxiliary container of the switch combination mentioned, the

Circuit in which this auxiliary switch is installed

is also an auxiliary circuit, i.e. a s 'r ¹ · ■, which gives an indication signal for the position of the main 3g switch. For example, if the

Fig. 2 shown switching position the switching If the main switch is turned off, it is sufficient

if the signal circuit is connected to the screws (18 and 20) and thus to the current conduction path (10). The auxiliary circuit then does not emit a signal, which is in accordance with the fact that the main switch is properly switched on. This arbitrarily selected position then corresponds to the position of the switching lever (3).

If you want to check from time to time whether the auxiliary circuit (signal circuit) is OK and there is no fault, the additional switching element (7) is pressed. It is then guided towards the inside of the housing against the force of the spring (21) and finally hits a lever (23) with the extension (22). This lever is mounted with one end in a pivot bearing (24) and its other end hits the front of the contact carrier (15). When the switching element (7) is pressed further, the contact carrier is moved downwards against the force of the spring (2S). This results in the contact bridge (13) lifting off the contacts (11 and 11') and the contact bridge (U) laying over the contacts (12 and 12') and thus the signal current.

2g circuit closes. If everything is OK, the signal is sent, whereupon the additional switching element (7), in this case the push button, can be released again. The springs (25 and 21) move the push button (7) and the contact carrier

(13) returns to the position shown in Fig. 2, so that the signal current is interrupted again.

In F 1g. 3 the case is shown in which the main switch has interrupted the main current circuit and in doing so has taken the auxiliary switch with it. In this case too the contact carrier (15) has been moved downwards/

this time, however, by the switching mechanism (26). The result of this is that the current conduction path (10), i.e. the signal circuit, is closed and the signal is thus triggered. Only when the switching lever (5) has been pushed back into the position shown in Fig. 2 can the contact carrier (15) slide upwards again and interrupt the path of the signal current again.

Reference symbols

1 Switches—Combination

2 main switches

3 auxiliary switches

4 gear levers of 2

5 gear levers of 3

6 Connecting pin

7 additional switching element of 3

8 housings of 3 t/10 current conduction paths 11/11' contacts 12/12* contacts 13/14 contact bridges

15 contact carriers

16 Double arrow 17/18/19/20 Connection screws

21 Spring

22 Extension

23 levers

24 pivot bearings

25 Spring

26 Switching mechanism

Claims (4)

■ «. · &igr;• · Protection claims 1. Switch combination, consisting of a main switch with switching contacts for at least one circuit and switching elements for switching them as well as an auxiliary switch with its own switching contacts for at least one further circuit and switching elements for switching them, whereby the switching elements of both switches are mechanically coupled to one another, characterized in that the high-voltage switch (3) has an additional, arbitrarily actuated switching element (7) via which the switching contacts (11,11·,-12,12') of the high-voltage switch (3) can be switched over. 2. Switch combination according to claim 1, characterized, that the additional switching element (7) of the auxiliary switch (3) is a push button that can be operated from the outside. 3. Switch combination according to claim 1, characterized, that the additional switching element (7) of the auxiliary switch (3) is a remote-controlled relay. 4. Switch combination according to one of the preceding claims, in which the movable switching contacts (11,11',12,12') of the HI Ifs switch (3) are on a 3g contact carrier (15) which can be displaced against the force of a spring (25)/ I)Il I
• * * I characterized, that the additional switching element (7) when actuated strikes a lever (23) which in turn acts on the contact carrier (15) in the direction of displacement. 20 25 30 35