CN102315054A - Electric installation switchgear and comprise installation switchgear and the system of auxiliary switch - Google Patents

Abstract

The invention relates to an electrical installation switchgear and a system comprising an installation switchgear and an auxiliary switch, in particular an electrical installation switchgear with a housing of insulating material and with a main current path in which there is a main contact lever arm Contact; with secondary current path, in which there is a separate contact with a separate contact carrier, wherein in the event of a short circuit the current is commutated from the main current path to the secondary current path; with a switch with locking point Lock, in which the control lever acts at the main contact lever arm, the other end of the control lever cooperating with the switch lock and the separation contact support, so that the separation contact is actuatable by the switch lock and also with the cooperation of the control lever main contact. The control lever has a coupling for coupling with the coupling finger of the auxiliary switch, and the housing of insulating material has a second recess in the region of the coupling, through which the coupling finger can be established with the coupling. active connection.

Description

Electrical installation switchgear and systems including installation switchgear and auxiliary switches

technical field

其带有绝缘材料壳体并带有主电流路径(在其中存在带有可摆动地支承的主接触杠杆臂(Hauptkontakthebelarm)的主触点(Hauptkontaktstelle))；带有副电流路径(在其中存在带有可摆动地支承的分离接触支撑件的分离触点(Trennkontaktstelle))，其中，在短路情况下电流从主电流路径换向到副电流路径上；带有具有在可旋转地支承的脱扣杠杆的协作下形成的止锁部位(Verklinkungsstelle)的开关锁(Schaltschloss)，其中，控制杠杆作用在主接触杠杆臂处，该控制杠杆的另一端部与开关锁和分离接触支撑件共同作用，从而通过开关锁可操纵分离触点并且在控制杠杆的协作下也可操纵主触点。The invention relates to an electrical installation switchgear according to the preamble of claim 1

It has an insulating material housing and has a main current path (in which there is a main contact (Hauptkontaktakstelle) with a pivotally mounted main contact lever arm (Hauptkontakthebelarm)); with a secondary current path (in which there is a belt Separate contact support with pivotable support separation contacts (Trennkontaktstelle)), wherein the current is commutated from the main current path to the secondary current path in the event of a short circuit; with a trip lever with a rotatably mounted The switch lock (Schaltschloss) of the locking position (Verklinkungsstelle) formed under the cooperation of the control lever, wherein the control lever acts on the main contact lever arm, and the other end of the control lever cooperates with the switch lock and the separation contact support. The switch lock can actuate the separate contacts and also the main contacts in cooperation with the control lever.

The invention also relates to a system according to the preamble of claim 6, comprising an electrical installation switchgear of this type and a series (anreihen) with joint fingers (Kuppelfinger) at the broad sides of a housing of insulating material. ), the connecting finger is in effective connection with the switching mechanism of the auxiliary switch.

Furthermore, the invention relates to a system according to the preamble of claim 7 comprising an electrical installation switchgear of this type and auxiliary switches connected at the wide sides of the housing of insulating material.

The invention also relates to a system according to the preamble of claim 8, comprising a composition consisting of a plurality of electrical installation switchgears of this type connected to each other and the installation switchgear arranged at the edge of the composition The auxiliary switch is connected at the wide side of the housing of insulating material.

The invention also relates to a system according to the preamble of claim 9 comprising an electrical switching device of this type and a plurality of auxiliary switches connected side by side at the broad sides of a housing of insulating material.

Background technique

An installation switching device of this type is, for example, a selective main circuit breaker, as is known, for example, from DE 10 2006 051 807 B1.

Installed switching devices of this type have a main current path in which there are main contacts comprising a stationary contact piece (Kontaktstück) and a movable contact piece, wherein the movable contact piece is fixed on a pivotable ground bearing on a contact lever arm in a fixed (ortsfest) swivel axis (Drehachse).

Furthermore, installed switching devices of this type have a secondary current path in which there is a separating contact (also called secondary contact) which likewise includes a stationary contact part and a movable contact part , wherein the movable contact piece is fixed on a contact support mounted pivotably in a stationary rotational axis, and the current is commutated from the main current path to the secondary current path in the event of a short circuit.

The main contact and the auxiliary contact can be actuated by means of a switching lever and by means of a switching lock which is mounted with its individual components in the circuit board holder.

The contact lever is a double-armed lever, the control lever acts on the opposite arm of the movable contact piece of the double-armed lever, the other end of the control lever is hingedly connected to the first intermediate lever through a turning pin, and the The other end is articulatedly connected to a second intermediate lever articulated at the switch lever.

The hinge pin with which the two intermediate levers are connected to each other is guided in the elongated hole of the rotatably mounted pawl lever.

A trip lever is also provided, and the ratchet lever and the trip lever form a locking position.

(即热和磁的脱扣器)作用在开关锁上，其中，杠杆如此布置且共同相互作用，即，在再次接通时实现“副触点在前(voreilend)，主触点紧随(nacheilend)”的开关顺序。在此，开关锁、分离接触支撑件以及主接触杠杆臂之间的有效连接通过控制杠杆而实现。Release element at the trip lever

(i.e. thermal and magnetic release ) acts on the switch lock, wherein the levers are arranged and interact together in such a way that when switching on again, the switching sequence "secondary contact first (voreilend), main contact next (nacheilend)" is achieved. Here, the operative connection between the switch lock, the separating contact support and the main contact lever arm is achieved by means of a control lever.

In the event of a short circuit, the striker (Schlagstift) strikes the main contacts and the main contacts are held open by the magnetic system of the installed switchgear for such a long time that the magnetic system is flowed by current , which is the case at least for such a long time that the short-circuit current on the secondary current path flows there again after commutation. Only if the short circuit is not cut off within the predetermined cut-off time, the switch lock is activated by the bimetal in the secondary current path, and the switch lock opens the separating contact and also causes the main contact to be held permanently by the control lever disconnect. That is to say, without this coupling by means of the control lever, the main contacts close again after the current has been cut off and thus depend on the disappearance of the magnetic force acting on the striker, so that the short-circuit current that may still exist Can be reflowed through the device.

A contact pressure spring acts on the contact lever and attempts to press the moving contact part against the stationary contact part with a given contact force.

In principle, it is known to connect auxiliary switches to installation switching devices of this type. Such an auxiliary switch likewise has a housing made of insulating material and includes a switching mechanism. The switching mechanism of the auxiliary switch is coupled to the switching mechanism of the installed switching device, so that the switching state of the installed switching device can be indicated, for example, in an auxiliary circuit connected to the auxiliary switch by the switching mechanism of the auxiliary switch by means of the auxiliary circuit Switches the indicating device and/or operating device on or off.

It is known to couple the switching mechanism of the auxiliary switch to the main contact lever arm of the installed switching device and thus directly indicate the switching state of the main current path via the auxiliary switch.

However, this leads to the fact that the auxiliary switch is also actuated every selective response of the main contact, that is, when the main contact is open but not yet permanently, because the current is still flowing through the auxiliary switch. The current path is steered. This is disadvantageous if the auxiliary switch should only indicate a permanent disconnection of the installation switching device.

Contents of the invention

It is therefore the object of the present invention to improve an installation switchgear of this type in such a way that the tripping of successive auxiliary switches is only effected when the installation switchgear is permanently disconnected.

Furthermore, it is the object of the invention to specify an improved system for installation switching devices of this type with consecutive auxiliary switches.

According to the invention, this object is achieved with respect to the installation switchgear by an installation switchgear of this type with the features of the characterizing part of claim 1 .

This object is achieved by a system according to any one of claims 6 to 9 in terms of an improved system for installation switchgear with consecutive auxiliary switches.

According to the invention, the control lever has a coupling for coupling with a coupling finger of an auxiliary switch connected at the housing of insulating material, and the insulating housing has a second recess in the region of the coupling, the coupling finger A piece can pass through the second notch to establish an effective connection with the coupling piece. Thus, the auxiliary switch is connected to the control lever, the switching mechanism of which is actuated by the control lever of the mounted switchgear via the link finger. This has the advantage that the control lever in the installed switching device has a large amount of force and path (Weg) available for actuating the auxiliary switch. Only when the thermal bimetal in the secondary current path or the primary current path responds, not when the striker of the electromagnetic tripper strikes the main contact, the control lever is operated by the switch lock for the main contact. Persistent stay disconnected. This ensures that the auxiliary switch is only tripped when there is a permanent open state of the main contacts of the installed switching device.

According to an advantageous embodiment of the invention, the coupling element is a recess in the actuating lever, into which the coupling finger can engage.

According to an advantageous embodiment of the invention, the second recess has the shape of an elongated hole.

According to an advantageous embodiment of the invention, a fixed stop for the auxiliary switch is provided on the insulating material housing. The stop can be a recess into which a stop lug of the auxiliary switch engages.

According to an advantageous embodiment of the invention, the tripping lever has, in its axis of rotation, a hollow shaft (Hohlwelle), into which a coupling shaft (Koppelachse) can be inserted for tripping the installed switching devices connected to each other. Linkage of leverage. This is also known under the concept of multipolar connections.

In a system according to the invention comprising an electrical installation switchgear and an auxiliary switch connected at the broad side of the insulating housing, the coupling shaft is inserted into the hollow shaft of the trip lever, the other of which is One end passes through the side wall of the auxiliary switch and is in effective connection with the switch mechanism of the auxiliary switch. In this case, the auxiliary switches are therefore connected via a connection implemented in the form of a multipole connection. In this case, the switching sequence of the expansion device can be influenced by the selection of the length of the coupling shaft. In multi-pole installations, short coupling shafts are used and each pole trips its neighbors. In the case of extending several, for example three, auxiliary switches to the installation switchgear, a long coupling shaft is chosen, since a pole of the installation switchgear must activate all three connected auxiliary switches.

Accordingly, at the broad sides of the system according to the invention (the system comprising a composition consisting of a plurality of interconnected electrical installation switchgears and successively insulating material housings of the installation switchgears arranged at the edges of the composition Auxiliary switch), the coupling shaft is inserted into the hollow shaft of the trip lever of the installation switchgear arranged at the edge of the composition, the other end of the coupling shaft passes through the side wall of the auxiliary switch and is connected to the side wall of the auxiliary switch The switch mechanism is in active connection.

In a system according to the invention comprising an electrical installation switchgear and a plurality of auxiliary switches connected side by side at the wide sides of a housing of insulating material, the coupling shaft is inserted into the hollow shaft of the trip lever, which The other end of the coupling shaft passes through the side wall of the auxiliary switches and is in operative connection with the switch mechanism of each of the auxiliary switches.

Description of drawings

The invention and further advantageous refinements and developments of the invention are explained and described in more detail on the basis of the drawing, in which an exemplary embodiment of the invention is shown. in:

Figure 1 shows a top view of the wide side of an installation switchgear according to the invention,

Figure 2 shows a view of a switchgear (Schaltwerk) for mounting switchgear according to the invention,

Figure 3 shows a view for coupling to an auxiliary switch at a switchgear according to the invention; and

Figure 4 shows a view of a system according to the invention comprising an installation switchgear with consecutive auxiliary switches.

List of reference numerals

1 Electrical installation switchgear

2 color edge material shell

3 main contacts

4 main contact lever arm

5 separate contacts

6 Separate contact support

7 Trip lever

8 Locking parts

9 link fingers

10 auxiliary switch

11 stopper

12 wide side

17 control lever

18 Coupling, first notch

19 second notch

20 Oscillating axis (Schwenkachse)

21 inner contour

22 notches

23 stop arm

24 stop hook

Detailed ways

1 shows a plan view of the broad side 12 of an electrical installation switching device 1 (here a selective main circuit breaker, as described for example in DE 10 2010 020 345 A1 with regard to its function and internal structure). The installation switchgear has an insulating material housing 2 in which all necessary components and assemblies are accommodated. The housing 2 has a T shape. In the vicinity of the connection between the two beams of T, a control lever runs inside the device, which is shown in more detail with the reference numeral 17 in FIG. 2 . On the broad side 12 there is an elongated recess 19 in the region in which the control lever 17 extends. The notch 19 clears the passage towards the notch 18 in the control lever 17 . The purpose is that, through the notches 19 , the linking fingers 9 of successive auxiliary switches can engage in the notches 18 in the control lever 17 , see FIGS. 3 and 4 .

Near the upper edge of the T-shaped short beam, a tripping lever 7 (see FIG. 2 ), which is mounted rotatably about a pivot axis 20 , extends within the installation switchgear 2 . The pivot shaft 20 has a hollow shaft, the inner contour 21 of which is configured here as a cross, in order to accommodate a (not shown) coupling rod for the coupling of other installed switching devices or auxiliary switches. Such a so-called multi-pole connection is also described, for example, in DE 10 2006 055 322 A1 in connection with the connection of operating current releases. Therefore, document DE 10 2006 055 322 A1 should be included in the disclosure content of the present invention with regard to the design of the so-called multi-pole connection. On the wide side 12 of the mounting switchgear housing there is a further recess 22 in the region of the pivot axis of the tripping lever 7 for the passage of the coupling rod.

An expansion device for connection to an installation switching device, such as an auxiliary switch 10 (see FIG. 3 ), has a locking arm 23 with a locking hook 24 on its broad side. The mounting switchgear has a recess 11 as a stop, into which a stop hook 21 of the auxiliary switch 10 can be engaged for fixing the auxiliary switch.

The auxiliary switch 10 has an outer contour which matches the outer contour of the installation switchgear 1 .

Figure 2 shows the switching device with the tripping lever 7 and the locking point 8, the main contact 3 with the main contact lever arm 4, the separating contact 5 with the separating contact support 6, and the connection of the switching device with The control lever 17 to which the main contact lever arm 4 is coupled. The more detailed function of the switching device, the other components and the interaction of the switching device with the main contact and the disconnecting contact during switching on and off of the installed switching device are described in more detail in DE 10 2006 051 807 B1. The representation in FIG. 2 of the present application corresponds to the representation in the figure of DE 10 2006 051 807 B1. Accordingly, this publication shall be included in the disclosure content of the present application document with regard to the structure and function of the switchgear-installed switchgear.

FIG. 4 shows a view of a system according to the invention comprising an installation switchgear 1 with an auxiliary switch 10 connected in succession. It can be seen that the link finger 9 of the auxiliary switch 10 engages in a notch 18 in the control lever 17 .

The invention also includes preferred embodiments as well as any combination of individual design features or refinements, as long as these do not exclude each other.

Claims (9)

1. an electric installation switchgear (1) has isolating material housing (2) and has primary current path, in said primary current path, exists to have the main contacts (3) of the main engagement lever arm (4) of supporting swingably; Have the secondary current path, in said secondary current path, have the separated contacts (5) of the separation contact strutting piece (6) that has supporting swingably, wherein, electric current commutates on the secondary current path from primary current path under short-circuit conditions; Have and have the switch lock that ends position, lock section (8) that under the cooperation of rotatably mounted dropout lever (7), forms; Wherein, Control lever (17) acts on said main engagement lever arm (4) and locates; The other end of said control lever (17) contacts strutting piece (6) acting in conjunction with said switch lock and said the separation; Thereby can handle said separated contacts (5) and under the cooperation of said control lever (17), also can handle said main contacts (3) through said switch lock; It is characterized in that; Said control lever (17) has connecting piece (18) and connects mutually with the binding finger (9) of locating auxiliary switch (10) in succession at isolating material housing (2) being used for, and said isolating material housing (2) has second recess (19) in the zone of said connecting piece (18), and said binding finger (9) can be passed said second recess (19) and set up with said connecting piece (18) and effectively be connected.

2. electric installation switchgear according to claim 1 (1) is characterized in that, said connecting piece is first recess (18) in the said control lever (17), and said binding finger (9) can join in said first recess (18).

3. electric installation switchgear according to claim 1 (1) is characterized in that, said second recess (19) has the shape of slotted hole.

4. electric installation switchgear according to claim 1 (1) is characterized in that, locates to be provided with retainer (11) to be used for the fixing of auxiliary switch at said isolating material housing (2).

5. electric installation switchgear according to claim 1 (1); It is characterized in that; Said dropout lever (7) has hollow shaft in its rotating shaft, in said hollow shaft, can insert the connection of coupking shaft with the dropout lever that is used for each other installation switchgear in succession.

6. system; Comprise electric installation switchgear according to claim 1 (1) and locate the auxiliary switch (10) that links finger (9) that has in succession in the wide side (12) of isolating material housing; Said binding finger (9) is in effective the connection with the switch machinery of said auxiliary switch (10); It is characterized in that; The binding finger (9) of said auxiliary switch (10) is passed second recess (19) in the horizontal sidewall (12) of said isolating material housing (2) and is joined in first recess in the said control lever (17), thereby the switch that the shift movement of said control lever (17) is delivered to said auxiliary switch (10) through said binding finger (9) mechanically.

7. system; Comprise electric installation switchgear according to claim 1 (1) and locate auxiliary switch (10) in succession in the wide side (12) of isolating material housing; It is characterized in that; Coupking shaft is inserted in the hollow shaft of said dropout lever (7), the other end of said coupking shaft is passed the sidewall of said auxiliary switch (10) and is in effective the connection with the switch machinery of said auxiliary switch (10).

8. system; Comprise the composition formed by a plurality of each other in succession according to claim 1 electric installation switchgears (1) and locate auxiliary switch (10) in succession in the wide side (12) of the isolating material housing of the installation switchgear of the edge that is arranged in said composition; It is characterized in that; Coupking shaft is inserted in the hollow shaft of dropout lever (7) of installation switchgear of the edge that is arranged in said composition, the other end of said coupking shaft is passed the sidewall of said auxiliary switch (10) and is in effective the connection with the switch machinery of said auxiliary switch (10).

9. system; Comprise that electric installation switchgear according to claim 1 (1) and a plurality of wide side (12) at isolating material housing locate side by side auxiliary switch (10) in succession; It is characterized in that; Coupking shaft is inserted in the hollow shaft of dropout lever (7), the other end of said coupking shaft is passed the sidewall of said auxiliary switch (10) and is in effective the connection with each switch machinery in the said auxiliary switch (10).

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