DE102014107273B4 - Switch for a switching device and diverter switch for an on-load tap-changer of a variable transformer - Google Patents

Abstract

Switch (10) for a switching device (11), comprising - a diverting contact (13); - a primary fixed contact (14); - a secondary fixed contact (15); A primary moving contact (16) which is movable relative to the diverter contact (13) and the primary fixed contact (14) such that it has a first end position in which it is connected to a first contact point (22) on the diverter contact (13 ) and with a second contact point (23) against the primary fixed contact (14), and a second end position in which it is separated from the diverter (13) and the primary fixed contact (14) can take; A secondary moving contact (17) which is movable relative to the diverting contact (13) and the secondary fixed contact (17) such that it has a first end position in which it is connected to a third contact point (24) on the diverting contact (13 ) and with a fourth contact point (25) on the secondary fixed contact (15) is applied, and a second end position in which it is separated from the diverter (13) and the secondary fixed contact (15) occupy.

Description

The invention relates to a diverter switch for an on-load tap changer of a variable transformer and a permanent main switch for a diverter switch of an on-load tap changer and generally a switch for a switching device.

CN 101 651 029 B describes a permanent main switch for a diverter switch of an on-load tap-changer. This known permanent main switch comprises a frame, a diverter contact, a primary fixed contact and a primary moving contact. The primary moving contact is pivotally mounted about a vertical pivot axis on the frame such that it bears a first end position in which it abuts the Ableitkontakt and the primary fixed contact, and a second end position in which it bears against the Ableitkontakt and of the Primary fixed contact is separated, can take. The primary moving contact comprises a contact body and two parallel current bands. The contact body has a fixed end through which the pivot axis passes, and a free end, with which it rests against the discharge contact in the first end position. The current bands have a fixed end, which is fixed to the fixed end of the contact body is electrically conductively, and and a free end, with which they bear resiliently against the Ableitkontakt, not only in the two end positions, but also in any intermediate position Change from one to the other end position. Consequently, the primary moving contact is constantly applied to the diverter contact. The current bands and the contact body extend from the pivot axis in opposite directions.

DE 100 50 895 C1 and US 2005/0 205 394 A1 each describe a diverter switch for a tap changer. This known diverter switch comprises for each phase to be switched a single, movable, electrically conductive permanent main contact, which is pivotable in two different end positions, and two permanent main contact pairs, which can be bridged by the movable permanent main contact. Each of the two permanent main contact pairs consists of a first permanent main contact and a second, second electrically isolated main permanent contact. Each one of the first permanent main contacts is electrically connected to one side A and the other of the first permanent main contacts with a side B of the diverter switch. The two second permanent main contacts are electrically connected to a common load dissipation of the diverter switch. In each phase to be switched in each case one of the two permanent main contact pairs is bridged in steady state and performs the continuous current, such that at the beginning of a load switching the previously leading to the continuous current a Dauerhauptkontaktpaar opens and at the end of each load switching the previously opened other permanent main contact pair is bridged and the continuous current takes over. In the interior of the diverter switch a centrally extending control shaft is arranged, through which the movable permanent main contact can be actuated. The movable permanent main contact has in its upper region on both sides in each case a spherically formed ramp surface, such that each of the two ramp surfaces in each position of the movable permanent main contact is constantly in communication with one of the second permanent main contacts and constantly slides on this or rolls. Consequently, the movable permanent main contact is constantly applied to one of the second permanent main contacts connected to the common load discharge. The movable permanent main contact further has in its lower region on both sides in each case a contact surface, such that only in each of the two possible end positions of the movable permanent main contact alternatively one of the two contact surfaces with one of the first permanent main contacts is electrically connected. Each of the permanent permanent main contacts consists of a plurality of individual contact blades, each of which is resiliently articulated. The two fixed permanent main contact pairs of each phase are arranged on three permanent main contact contact carriers on the inner wall of an insulating cylinder surrounding the diverter switch. The first permanent main contact carrier which carries the first permanent main contact associated with side A comprises a contact point by means of which the electrical connection to the side A can be produced. The second permanent main contact carrier, which carries the first permanent main contact associated with side B, comprises a contact point by means of which the electrical connection to the side B can be produced. The third permanent main contact carrier which carries the second permanent main contacts associated with the common load dissipation comprises a contact point to which the connection for common load dissipation attaches.

JP 2010-258 266 A describes a diverter switch for an on-load tap-changer. This known diverter switch comprises a diverter contact, a primary fixed contact, a secondary fixed contact and a single moving contact for each phase to be switched. The moving contact is pivotally mounted about a vertical pivot axis which is parallel to a central control shaft of the on-load tap changer such that it bears a first end position in which it bears against the diverter contact and the primary fixed contact and is separated from the secondary fixed contact, and a second end position in which it bears against the diverter contact and the secondary fixed contact and is separated from the primary fixed contact can take. The moving contact is constantly at the discharge contact.

JP 2013-247 170 A describes a diverter switch for an on-load tap-changer. This known diverter switch comprises a primary discharge contact, a secondary discharge contact, a primary fixed contact, a secondary fixed contact, a primary moving contact and a secondary moving contact for each phase to be switched. Each primary moving contact is mounted so linearly displaceable radially to a central switching shaft of the on-load tap changer that it has a first end position in which it rests against the respective primary Ableitkontakt and the respective primary fixed contact, and a second end position in which he from this Primary Ableitkontakt and this primary fixed contact is separated, can take. Each secondary moving contact is mounted linearly displaceable radially relative to the switching shaft in such a way that it has a first end position in which it bears against the respective secondary deflection contact and the respective secondary fixed contact, and a second end position in which it contacts this secondary deflection contact and this secondary fixed contact is separated, can take.

GB 2 077 503 A describes a diverter switch for an on-load tap-changer. This known diverter switch comprises a diverter contact, a primary fixed contact, a secondary fixed contact and a single moving contact. The moving contact is mounted linearly displaceable tangentially to a central control shaft of the on-load tap changer in such a way that it has a first end position in which it bears against the diverter contact and the primary fixed contact and is separated from the secondary stationary contact, and a second end position in which it is applied to the diverter and the secondary fixed contact and is separated from the primary fixed contact, can take. The moving contact is constantly at the discharge contact.

JP H05-082 366 A describes a diverter switch for an on-load tap-changer. This known diverter switch comprises a diverter contact, a primary fixed contact, a secondary fixed contact and a moving contact for each phase to be switched. The moving contact is pivotably mounted about a central switching shaft of the on-load tap changer such that it has a first end position, in which it bears against the respective primary discharge contact and the respective primary fixed contact and is separated from the respective secondary fixed contact, and a second end position, in which he bears this primary Ableitkontakt and this secondary fixed contact and is separated from this primary fixed contact, can take. The moving contact is constantly at the discharge contact.

Against this background, the invention proposes the subject matters of the independent claims. Advantageous developments and embodiments of the invention are described in the dependent claims.

• – einen Ableitkontakt;
• – einen Primär-Festkontakt;
• – einen Sekundär-Festkontakt;
• – einen Primär-Bewegkontakt, der relativ zu dem Ableitkontakt und dem Primär-Festkontakt derart bewegbar und insbesondere gelagert ist, dass er eine erste Endposition, in der er mit einem ersten Kontaktpunkt oder Berührungspunkt oder Anlagepunkt an dem Ableitkontakt und mit einem zweiten Kontaktpunkt oder Berührungspunkt oder Anlagepunkt an dem Primär-Festkontakt anliegt, und eine zweite Endposition, in der er von dem Ableitkontakt und dem Primär-Festkontakt getrennt ist, einnehmen kann;
• – einen Sekundär-Bewegkontakt, der relativ zu dem Ableitkontakt und dem Sekundär-Festkontakt derart bewegbar und insbesondere gelagert ist, dass er eine erste Endposition, in der er mit einem dritten Kontaktpunkt oder Berührungspunkt oder Anlagepunkt an dem Ableitkontakt und mit einem vierten Kontaktpunkt oder Berührungspunkt oder Anlagepunkt an dem Sekundär-Festkontakt anliegt, und eine zweite Endposition, in der er von dem Ableitkontakt und dem Sekundär-Festkontakt getrennt ist, einnehmen kann.

The invention proposes, according to a first aspect, a switch for a switching device, comprising

• A leakage contact;
• A primary fixed contact;
• A secondary fixed contact;
• - A primary moving contact, which is relative to the Ableitkontakt and the primary fixed contact movable and in particular stored such that it has a first end position in which it with a first contact point or contact point or contact point on the Ableitkontakt and with a second contact point or contact point or contact point is applied to the primary fixed contact, and a second end position in which it is separated from the diverter and the primary fixed contact can take;
• - A secondary moving contact, which is movable relative to the Ableitkontakt and the secondary fixed contact and in particular stored that it has a first end position, in which he with a third contact point or contact point or contact point on the Ableitkontakt and with a fourth contact point or point of contact or contact point is applied to the secondary fixed contact, and a second end position in which it is separated from the diverter and the secondary fixed contact occupy.

Since in the proposed switch, the moving contact is not constantly applied to the Ableitkontakt, according to the teaching of CN 101 651 029 B required current bands and according to the teaching of DE 100 50 895 C1 and the US 2005/0 205 394 A1 required spring-hinged contact blades eliminated. Thus it can be constructed very simply.

The proposed switch allows very low power line losses, since the current path from the primary fixed contact to which, for example, a primary main line of the switching device can be connected to the diverter, to which, for example, a derivative of the switching device can be connected by the primary moving contact and thus only via two serially connected contact points, namely the first and the second contact point runs.

At the CN 101 651 029 B known permanent main switch runs the corresponding current path of the primary fixed contact to which, for example, a primary main line of the diverter switch can be connected to the diverter, to which, for example, a derivative of the diverter switch can be connected by the contact body and one of the current bands of the primary moving contact and thus via three serially connected contact points, namely the contact point between the primary fixed contact and the contact body, the contact point between the contact body and the current band and the contact point between the current band and the Ableitkontakt.

At the DE 100 50 895 C1 and US 2005/0 205 394 A1 known diverter switch runs the corresponding current path from the first permanent main contact carrier to which the side A of the diverter switch can be connected to the third permanent main contact carrier to which the common load dissipation of the diverter switch can be connected by one of the contact blades of the side A. associated first permanent main contact, the movable permanent main contact and one of the contact blades of the second permanent main contact and thus via four serially connected contact points, namely the contact point between the first permanent main contact contact carrier and contact blade of the first permanent main contact, the contact point between this contact blade and the movable permanent main contact, the contact point between the movable permanent main contact and contact blade of the second permanent main contact and the contact point between this contact blade and the third permanent main contact contact carrier.

In this patent, a formulation of the type "A is connected to B" corresponds to a formulation of "A is attached to B", a formulation of the type "A is connected to B" means "A is electrically conductively connected to B" "And" A is electrically conductively connected to B, ie via C, "and has a formulation of the type" A is connected to B "meaning" A is electrically conductively directly connected to B ".

Preferably, the diverter contact is or is connected to ground or ground potential or to a neutral point or to a corner point of a delta connection or to a derivative of the switching device and in particular connected. The derivative, for its part, can for example be connected to ground or to earth potential or to a neutral point or to a corner point of a delta connection and in particular to be or be connected.

The proposed switch may be formed as desired in any manner, for example, as permanent main switch for a diverter switch of an on-load tap changer.

Preferably, the diverting contact, the primary fixed contact and the primary moving contact are attached to a frame of the switching device. The frame may be in one piece or comprise at least two sub-frames. If the switch is a permanent main switch for a diverter switch, the frame of the diverter switch preferably comprises a contact cylinder, which is designed in particular as an oil vessel, as a first subframe and a framework of a diverter switch insert as a second subframe, which is coupled to the first subframe. Preferably, the diverter contact and the primary fixed contact are or are attached to the first subframe and in particular fastened and is or is the primary moving contact attached to the second subframe and in particular supported. The framework is usually inserted from above into the contact cylinder and secured in an upper edge region of this.

Preferably, the primary fixed contact is or is connected to a primary main line of the switching device and in particular connected. The primary main line, for its part, can for example be connected to a mains line which is assigned to one phase of an AC network, or to a primary side or secondary side of a transformer or to a neutral point or to a corner point of a delta connection.

It can be provided that the primary moving contact is pivotable about a first pivot axis.

• – der Ableitkontakt monolithisch ist;
• – der Primär-Festkontakt monolithisch und insbesondere relativ zu dem Ableitkontakt starr oder unbeweglich oder ortsfest angeordnet ist;
• – der Primär-Bewegkontakt monolithisch ist.

It can be provided that

• - The diverter is monolithic;
• - The primary fixed contact monolithic and in particular relative to the Ableitkontakt is rigid or immovable or stationary;
• - The primary-moving contact is monolithic.

In this patent, the term "monolithic" has the meanings "one-piece" or "consisting of a part or piece".

If in this case, for example, the diverting contact connected to a derivative of the switching device and the primary fixed contact to a primary main line, that is directly connected, so a particularly low-loss current path can be achieved.

• – in der ersten Endposition der erste und der zweite Anlagepunkt auf einer ersten Verbindungsgeraden liegen;
• – die erste Verbindungsgerade nichtparallel oder rechtwinklig oder windschief zu der ersten Schwenkachse ist.

It can be provided that

• - In the first end position, the first and the second bearing point lie on a first connecting line;
• - The first connecting line is non-parallel or perpendicular or skewed to the first pivot axis.

In this patent, a formulation of the type "A is perpendicular to B" includes the meanings "A intersects B at an angle of 90 °" and "A is skewed to B and the normal planes of A and B are orthogonal".

If, for example, the pivot axis runs vertically, the first connecting straight line can preferably run horizontally and cut or pass the pivot axis.

But it is also possible that the first connecting line is parallel to the first pivot axis.

• – in der ersten Endposition der erste und der zweite Anlagepunkt auf einer ersten Verbindungsgeraden liegen und eine erste Verbindungsstrecke begrenzen;
• – die erste Verbindungsgerade und die erste Schwenkachse sich schneiden und deren Schnittpunkt außerhalb oder innerhalb der ersten Verbindungsstrecke liegt, oder die erste Verbindungsgerade und die erste Schwenkachse windschief sind und der Lotfußpunkt der ersten Verbindungsgeraden außerhalb oder innerhalb der ersten Verbindungsstrecke liegt.

It can be provided that

• - In the first end position of the first and the second contact point lie on a first connecting line and limit a first link;
• - The first connecting line and the first pivot axis intersect and whose intersection is outside or within the first link, or the first connecting line and the first pivot axis are skewed and the Lotfußpunkt the first connecting line outside or within the first link.

Preferably, the secondary fixed contact and the secondary moving contact are or are attached to the frame of the switching device. If the switch is a permanent main switch for a diverter switch, then the secondary fixed contact is or is preferably attached to the first subframe and in particular fixed and the secondary moving contact attached to the second subframe and in particular stored.

Preferably, the secondary fixed contact is or is connected to a secondary main line of the switching device and in particular connected. The secondary main line, in turn, for example, be connected to a power line, which is assigned to a phase of an AC network, or to a primary side or secondary side of a transformer or to a neutral point or to a vertex of a delta connection.

The statements on the primary fixed contact and the primary moving contact apply analogously to the secondary fixed contact and the secondary moving contact.

The proposed switch can be configured as desired in any manner, for example, as permanent main switch for a diverter switch of an on-load tap changer, and / or for example at least one additional Ableitkontakt and / or at least one additional primary fixed contact and / or at least one additional primary moving contact and / or comprise at least one additional secondary fixed contact and / or at least one additional secondary moving contact.

It can be provided that the secondary moving contact about a second pivot axis, which is parallel and in particular coaxial with the first pivot axis, or about the first pivot axis is pivotable.

• – der Sekundär-Festkontakt monolithisch ist und insbesondere relativ zu dem Ableitkontakt starr oder unbeweglich oder ortsfest angeordnet ist;
• – der Sekundär-Bewegkontakt monolithisch ist.

It can be provided that

• - The secondary fixed contact is monolithic and is arranged in particular relative to the Ableitkontakt rigid or immovable or stationary;
• - The secondary moving contact is monolithic.

If in this case, for example, the diverting contact connected to a derivative of the switching device and the secondary fixed contact to a secondary main line of the switching device, that is directly connected, so a particularly low-loss current path can be achieved.

• – in der ersten Endposition der dritte und der vierte Anlagepunkt auf einer zweiten Verbindungsgeraden liegen;
• – die zweite Verbindungsgerade nichtparallel oder rechtwinklig oder windschief zu der zweiten Schwenkachse ist.

It can be provided that

• - In the first end position of the third and fourth bearing point lie on a second connecting line;
• - The second connecting line is non-parallel or perpendicular or skewed to the second pivot axis.

If, for example, the pivot axis is vertical, then the second connecting straight line can preferably extend horizontally and cut or pass the pivot axis.

But it is also possible that the second connecting line is parallel to the first pivot axis.

• – in der ersten Endposition der dritte und der vierte Anlagepunkt auf einer zweiten Verbindungsgeraden liegen und eine zweite Verbindungsstrecke begrenzen;
• – die zweite Verbindungsgerade und die zweite Schwenkachse sich schneiden und deren Schnittpunkt außerhalb oder innerhalb der zweiten Verbindungsstrecke liegt, oder die zweite Verbindungsgerade und die zweite Schwenkachse windschief sind und der Lotfußpunkt der zweiten Verbindungsgeraden außerhalb oder innerhalb der zweiten Verbindungsstrecke liegt.

It can be provided that

• - In the first end position of the third and the fourth bearing point lie on a second connecting line and limit a second link;
• - The second connecting line and the second pivot axis intersect and whose intersection is outside or within the second link, or the second connecting line and the second pivot axis are skewed and the Lotfußpunkt the second connecting line outside or within the second link.

It can be provided that the diverting contact and the pivot axes are arranged symmetrically between the primary fixed contact and the secondary fixed contact.

• – wenigstens einen zusätzlichen Primär-Bewegkontakt, der relativ zu dem Ableitkontakt und dem Primär-Festkontakt derart bewegbar und insbesondere um die erste Schwenkachse schwenkbar gelagert ist, dass er eine erste Endposition, in der er an dem Ableitkontakt und dem Primär-Festkontakt anliegt, und eine zweite Endposition, in der er von dem Ableitkontakt und dem Primär-Festkontakt getrennt ist, einnehmen kann; und/oder
• – wenigstens einen zusätzlichen Sekundär-Bewegkontakt, der relativ zu dem Ableitkontakt und dem Sekundär-Festkontakt derart bewegbar und insbesondere um die zweite Schwenkachse oder die erste Schwenkachse schwenkbar gelagert ist, dass er eine erste Endposition, in der er an dem Ableitkontakt und dem Sekundär-Festkontakt anliegt, und eine zweite Endposition, in der er von dem Ableitkontakt und dem Sekundär-Festkontakt getrennt ist, einnehmen kann.

It can be provided that the proposed switch comprises

• - At least one additional primary moving contact, which is relative to the Ableitkontakt and the primary fixed contact so movable and in particular pivotally mounted about the first pivot axis, that it bears a first end position in which it bears against the Ableitkontakt and the primary fixed contact, and a second end position in which it is separated from the diverter and the primary fixed contact can take; and or
• At least one additional secondary moving contact which is movable relative to the diverting contact and the secondary fixed contact and in particular pivotally mounted about the second pivot axis or the first pivot axis, that it has a first end position in which it at the Ableitkontakt and the secondary Firm contact is applied, and a second end position in which it is separated from the diverter and the secondary fixed contact, can take.

With the additional moving contacts, the current carrying capacity or current carrying capacity of the switch can be gradually increased as needed in the manner of a modular system or kit. Preferably, the moving contacts are identical.

It can be provided that the moving contacts are electrically conductively connected to each other.

But it is also possible that the moving contacts are galvanically separated from each other.

• – wenigstens einen Primär-Opferkontakt oder Primär-Abbrandkontakt, der relativ zu dem Ableitkontakt und dem Primär-Festkontakt derart bewegbar und insbesondere um die erste Schwenkachse schwenkbar gelagert ist, dass er eine erste Endposition, in der er mit einem fünften Kontaktpunkt oder Berührungspunkt oder Anlagepunkt an dem Ableitkontakt und mit einem sechsten Kontaktpunkt oder Berührungspunkt oder Anlagepunkt an dem Primär-Festkontakt anliegt, und eine zweite Endposition, in der er von dem Ableitkontakt und dem Primär-Festkontakt getrennt ist, einnehmen kann;

wobei

• – die Primär-Bewegkontakte und die Primär-Abbrandkontakte gemeinsam derart bewegt und insbesondere geschwenkt werden können, dass wenigstens einer der Primär-Abbrandkontakte die erste Endposition vor den Primär-Bewegkontakten einnimmt und nach den Primär-Bewegkontakten verlässt.

It can be provided that the proposed switch comprises

• - At least one primary sacrificial contact or primary Abbrandkontakt that is relative to the Ableitkontakt and the primary fixed contact so movable and in particular pivotally mounted about the first pivot axis, that he has a first end position in which he with a fifth contact point or contact point or contact point abutting the diverter contact and having a sixth contact point or point of contact or abutment point on the primary fixed contact and a second end position in which it is separated from the diverter contact and the primary fixed contact, can take;

in which

• - The primary moving contacts and the primary Abbrandkontakte can be moved together and in particular pivoted in such a way that at least one of the primary Abbrandkontakte occupies the first end position in front of the primary Bewegkontakten and leaves after the primary Bewegkontakten.

Preferably, the primary erosion contact is at least in a contact area, which contains or surrounds the fifth contact point, and / or in a contact area containing or surrounding the sixth contact point, erosion resistant or more arc-resistant than in its remaining area and / or as the corresponding investment areas of the primary -Bewegkontakte. This is achieved, for example, in that it consists of a material which is, for example, a WCu alloy, which has a higher melting point in comparison to the material of its remaining region, which is, for example, copper.

Preferably, the primary burnup contact is monolithic.

• – ein Primär-Abbrandkontakt und wenigstens zwei Primär-Bewegkontakte vorhanden sind;
• – die Primär-Bewegkontakte und der Primär-Abbrandkontakt stapelartig derart angeordnet sind, dass die Anzahl der Primär-Bewegkontakte auf einer Seite des Primär-Abbrandkontakts höchstens um eins größer als die Anzahl der Primär-Bewegkontakte auf der gegenüberliegenden Seite des Primär-Abbrandkontakts ist.

It can be provided that

• A primary burnup contact and at least two primary moving contacts are present;
• - The primary moving contacts and the primary Abbrandkontakt are stacked arranged such that the number of primary moving contacts on one side of the primary Abbrandkontakts is at most one greater than the number of primary Bewegkontakte on the opposite side of the primary Abbrandkontakts.

Thus, the primary burnup contact is located in or near the center of the stack of primary moving contacts.

• – zwei Primär-Abbrandkontakte und wenigstens ein Primär-Bewegkontakt vorhanden sind;
• – die Primär-Bewegkontakte und die Primär-Abbrandkontakte stapelartig derart angeordnet sind, dass die Primär-Bewegkontakte zwischen den Primär-Abbrandkontakten angeordnet sind.

It can be provided that

• - There are two primary Abbrandkontakte and at least one primary moving contact;
• - The primary moving contacts and the primary Abbrandkontakte stacked are arranged such that the primary moving contacts are arranged between the primary Abbrandkontakten.

• – wenigstens einen Sekundär-Opferkontakt oder Sekundär-Abbrandkontakt, der relativ zu dem Ableitkontakt und dem Sekundär-Festkontakt derart bewegbar und insbesondere um die zweite Schwenkachse oder um die erste Schwenkachse schwenkbar gelagert ist, dass er eine erste Endposition, in der er mit einem siebenten Kontaktpunkt oder Berührungspunkt oder Anlagepunkt an dem Ableitkontakt und mit einem achten Kontaktpunkt oder Berührungspunkt oder Anlagepunkt an dem Sekundär-Festkontakt anliegt, und eine zweite Endposition, in der er von dem Ableitkontakt und dem Sekundär-Festkontakt getrennt ist, einnehmen kann;

wobei

• – die Sekundär-Bewegkontakte und die Sekundär-Abbrandkontakte gemeinsam derart bewegt und insbesondere geschwenkt werden können, dass wenigstens einer der Sekundär-Abbrandkontakte die erste Endposition vor den Sekundär-Bewegkontakten einnimmt und nach den Sekundär-Bewegkontakten verlässt.

It can be provided that the proposed switch comprises

• - At least one secondary sacrificial contact or secondary Abbrandkontakt which is so movable relative to the Ableitkontakt and the secondary fixed contact and pivotally mounted in particular about the second pivot axis or about the first pivot axis, that he has a first end position in which he with a seventh Contact point or contact point or contact point on the Ableitkontakt and with an eighth contact point or contact point or contact point abuts the secondary fixed contact, and a second end position in which it is separated from the Ableitkontakt and the secondary fixed contact can take;

in which

• - The secondary-moving contacts and the secondary Abbrandkontakte can be moved together and in particular pivoted in such a way that at least one of the secondary Abbrandkontakte occupies the first end position in front of the secondary Bewegkontakten and leaves after the secondary Bewegkontakten.

The remarks on the primary burn-off contact also apply analogously to the secondary burn-off contact.

• – ein Sekundär-Abbrandkontakt und wenigstens zwei Sekundär-Bewegkontakte vorhanden sind;
• – die Sekundär-Bewegkontakte und der Sekundär-Abbrandkontakt stapelartig derart angeordnet sind, dass die Anzahl der Sekundär-Bewegkontakte auf einer Seite des Sekundär-Abbrandkontakts höchstens um eins größer als die Anzahl der Sekundär-Bewegkontakte auf der gegenüberliegenden Seite des Sekundär-Abbrandkontakts ist.

It can be provided that

• A secondary burnup contact and at least two secondary moving contacts are present;
• - The secondary-moving contacts and the secondary Abbrandkontakt are stacked arranged such that the number of secondary Bewegkontakte on one side of the secondary Abbrandkontakts is at most one greater than the number of secondary Bewegkontakte on the opposite side of the secondary Abbrandkontakts.

• – zwei Sekundär-Abbrandkontakte und wenigstens ein Sekundär-Bewegkontakt vorhanden sind;
• – die Sekundär-Bewegkontakte und die Sekundär-Abbrandkontakte stapelartig derart angeordnet sind, dass die Sekundär-Bewegkontakte zwischen den Sekundär-Abbrandkontakten angeordnet sind.

It can be provided that

• - There are two secondary Abbrandkontakte and at least one secondary-moving contact;
• - The secondary-moving contacts and the secondary Abbrandkontakte are stacked arranged such that the secondary-moving contacts between the secondary Abbrandkontakten are arranged.

It can be provided that each erosion contact is arranged in the second end position relative to the associated moving contacts such that its contact points protrude with respect to the contact points of these moving contacts.

It can be provided that the Abbrandkontakte are electrically connected to the Bewegkontakten.

It can be provided that the proposed switch comprises a contact carrier on which the moving contacts and / or the Abbrandkontakte are mounted and which is movable relative to the Ableitkontakt and the fixed contacts and in particular pivotally mounted about the first pivot axis.

• – der Kontaktträger eine erste Tragplatte umfasst, die relativ zu dem Ableitkontakt und den Festkontakten bewegbar und insbesondere um die erste Schwenkachse schwenkbar gelagert ist;
• – die Bewegkontakte und/oder die Abbrandkontakte an der ersten Tragplatte angebracht und insbesondere gelagert sind.

It can be provided that

• - The contact carrier comprises a first support plate which is movable relative to the Ableitkontakt and the fixed contacts and in particular pivotally mounted about the first pivot axis;
• - The moving contacts and / or the Abbrandkontakte mounted on the first support plate and are stored in particular.

Preferably, the first support plate is perpendicular to the first pivot axis and / or parallel to the first connecting straight line.

• – der Kontaktträger eine zweite Tragplatte umfasst, die relativ zu dem Ableitkontakt und den Festkontakten bewegbar und insbesondere um die erste Schwenkachse schwenkbar gelagert ist;
• – die Bewegkontakte und/oder die Abbrandkontakte an der zweiten Tragplatte angebracht und insbesondere gelagert sind.

It can be provided that

• - The contact carrier comprises a second support plate which is movable relative to the Ableitkontakt and the fixed contacts and in particular pivotally mounted about the first pivot axis;
• - The moving contacts and / or the Abbrandkontakte mounted on the second support plate and are stored in particular.

Preferably, the second support plate is attached to the first support plate and in particular fastened.

Preferably, the second support plate extends at right angles to the second pivot axis and / or parallel to the second connecting straight line.

• – die Tragplatten zueinander parallel sind;
• – die Bewegkontakte und/oder die Abbrandkontakte zwischen den Tragplatten angeordnet sind.

It can be provided that

• - The support plates are parallel to each other;
• - The moving contacts and / or the Abbrandkontakte between the support plates are arranged.

It can be provided that each moving contact and / or each erosion contact is mounted on the contact carrier such that it is resiliently biased in the first end position against the Ableitkontakt and the associated fixed contact.

• – einen Dauerhauptschalter, der gemäß dem ersten Aspekt ausgebildet ist, umfassend
• • einen Sekundär-Festkontakt;
• • einen Sekundär-Bewegkontakt, der relativ zu dem Ableitkontakt und dem Sekundär-Festkontakt derart bewegbar und insbesondere gelagert ist, dass er eine erste Endposition, in der er mit einem dritten Kontaktpunkt oder Berührungspunkt oder Anlagepunkt an dem Ableitkontakt und mit einem vierten Kontaktpunkt oder Berührungspunkt oder Anlagepunkt an dem Sekundär-Festkontakt anliegt, und eine zweite Endposition, in der er von dem Ableitkontakt und dem Sekundär-Festkontakt getrennt ist, einnehmen kann;
• – eine Primär-Hauptleitung, die an den Primär-Festkontakt angebunden und insbesondere angeschlossen ist;
• – eine Sekundär-Hauptleitung, die an den Sekundär-Festkontakt angebunden und insbesondere angeschlossen ist;

wobei

• – der Ableitkontakt monolithisch ist;
• – der Primär-Festkontakt monolithisch und insbesondere relativ zu dem Ableitkontakt starr oder unbeweglich oder ortsfest angeordnet ist;
• – der Sekundär-Festkontakt monolithisch und insbesondere relativ zu dem Ableitkontakt starr oder unbeweglich oder ortsfest angeordnet ist;
• – der Primär-Bewegkontakt monolithisch ist;
• – der Sekundär-Bewegkontakt monolithisch ist.

The invention proposes, according to a second aspect, a diverter switch for an on-load tap changer of a variable transformer, comprising

• - A permanent main switch, which is formed according to the first aspect, comprising
• • a secondary fixed contact;
• A secondary moving contact that is movable relative to the diverter contact and the secondary fixed contact and in particular supported such that it has a first end position in which it is connected to a third contact point or contact point or contact point on the diverter contact and to a fourth contact point or contact point or contact point is applied to the secondary fixed contact, and a second end position in which it is separated from the diverter and the secondary fixed contact, can take;
• - A primary main line, which is connected to the primary fixed contact and in particular connected;
• - A secondary main line which is connected to the secondary fixed contact and in particular connected;

in which

• - The diverter is monolithic;
• - The primary fixed contact monolithic and in particular relative to the Ableitkontakt is rigid or immovable or stationary;
• - The secondary fixed contact monolithic and in particular relative to the Ableitkontakt is rigid or immovable or stationary;
• - the primary moving contact is monolithic;
• - The secondary moving contact is monolithic.

Since the proposed diverter switch comprises a permanent main switch, which is formed according to the first aspect, it can be designed very simple and it allows very low power line losses.

Preferably, the proposed diverter switch comprises a derivative, which is connected to the diverter contact and in particular connected. Preferably, the derivative is or is connected to ground or ground potential or to a neutral point or to a corner point of a delta connection or to a common discharge connection of the on-load tap-changer and in particular connected. For its part, the lead-in terminal can, for example, be connected to ground or to ground potential or to a neutral point or to a corner point of a delta connection and in particular to be or be connected.

Preferably, the primary main line is or is connected to a primary selector contact of the on-load tap-changer and / or the secondary main line is connected to a secondary selector contact of the on-load tap-changer and in particular connected.

• – eine Primär-Hauptvakuumschaltröhre mit einem ersten und einem zweiten Primär-Hauptanschluss;
• – eine Sekundär-Hauptvakuumschaltröhre mit einem ersten und einem zweiten Sekundär-Hauptanschluss;

wobei

• – der erste Primär-Hauptanschluss mit dem Primär-Festkontakt elektrisch leitend verbunden ist und/oder mit dem Primär-Wählerkontakt elektrisch leitend verbunden werden kann;
• – der erste Sekundär-Hauptanschluss mit dem Sekundär-Festkontakt elektrisch leitend verbunden ist und/oder mit dem Sekundär-Wählerkontakt elektrisch leitend verbunden werden kann;
• – der zweite Primär-Hauptanschluss und der zweite Sekundär-Hauptanschluss mit dem Ableitkontakt und/oder der Ableitung elektrisch leitend verbunden sind und/oder mit dem Ableitungsanschluss elektrisch leitend verbunden werden können.

It can be provided that the proposed diverter switch comprises

• A primary main vacuum interrupter having a first and a second primary main connection;
• A secondary main vacuum interrupter with a first and a second secondary main connection;

in which

• - The first primary main terminal is electrically connected to the primary fixed contact and / or can be electrically connected to the primary selector contact;
• - The first secondary main terminal is electrically connected to the secondary fixed contact and / or can be electrically connected to the secondary selector contact;
• - The second primary main terminal and the second secondary main terminal to the diverter and / or the drain are electrically connected and / or can be electrically connected to the discharge port.

• – einen Primär-Trennschalter mit einem ersten und einem zweiten Primär-Trennanschluss;
• – einen Sekundär-Trennschalter mit einem ersten und einem zweiten Sekundär-Trennanschluss;

wobei

• – der erste Primär-Trennanschluss mit dem zweiten Primär-Hauptanschluss elektrisch leitend verbunden ist;
• – der erste Sekundär-Trennanschluss mit dem zweiten Sekundär-Hauptanschluss elektrisch leitend verbunden ist;
• – der zweite Primär-Trennanschluss und der zweite Sekundär-Trennanschluss mit dem Ableitkontakt und/oder der Ableitung elektrisch leitend verbunden sind und/oder mit dem Ableitungsanschluss elektrisch leitend verbunden werden können.

It can be provided that the proposed diverter switch comprises

• A primary circuit breaker having first and second primary isolating terminals;
• A secondary circuit breaker having first and second secondary isolating terminals;

in which

• - The first primary isolating connection is electrically connected to the second primary main terminal;
• - The first secondary isolating connection is electrically connected to the second secondary main terminal;
• - The second primary isolating port and the second secondary isolating port are electrically connected to the diverter and / or the drain and / or can be electrically connected to the discharge port.

• – eine Primär-Hilfsvakuumschaltröhre mit einem ersten und einem zweiten Primär-Hilfsanschluss;
• – eine Sekundär-Hilfsvakuumschaltröhre mit einem ersten und einem zweiten Sekundär-Hilfsanschluss;

wobei

• – der erste Primär-Hilfsanschluss mit dem Primär-Festkontakt und/oder dem ersten Primär-Hauptanschluss elektrisch leitend verbunden ist und/oder mit dem Primär-Wählerkontakt elektrisch leitend verbunden werden kann;
• – der erste Sekundär-Hilfsanschluss mit dem Sekundär-Festkontakt und/oder dem ersten Sekundär-Hauptanschluss elektrisch leitend verbunden ist und/oder mit dem Sekundär-Wählerkontakt elektrisch leitend verbunden werden kann;
• – der zweite Primär-Hilfsanschluss mit dem zweiten Primär-Hauptanschluss elektrisch leitend verbunden ist;
• – der zweite Sekundär-Hilfsanschluss mit dem zweiten Sekundär-Hauptanschluss elektrisch leitend verbunden ist.

It can be provided that the proposed diverter switch comprises

• A primary auxiliary vacuum interrupter having a first and a second primary auxiliary port;
• A secondary auxiliary vacuum interrupter having first and second secondary auxiliary ports;

in which

• - The first primary auxiliary terminal with the primary fixed contact and / or the first primary main terminal is electrically connected and / or can be electrically connected to the primary selector contact;
• - The first secondary auxiliary terminal is electrically connected to the secondary fixed contact and / or the first secondary main terminal and / or can be electrically connected to the secondary selector contact;
• - The second primary auxiliary terminal is electrically connected to the second primary main terminal;
• - The second secondary auxiliary terminal is electrically connected to the second secondary main terminal.

The proposed diverter switch can be configured as desired in any desired manner and, for example, at least one additional permanent main switch and / or at least one additional derivative and / or at least one additional primary main line and / or at least one additional secondary main line and / or at least one additional Primary main vacuum interrupter and / or at least one additional secondary main vacuum interrupter and / or at least one additional primary circuit breaker and / or at least one additional secondary circuit breaker and / or at least one additional one Primary auxiliary vacuum interrupter and / or at least one additional secondary auxiliary vacuum interrupter.

• – einen Ableitkontakt;
• – einen Festkontakt;
• – wenigstens zwei Bewegkontakte, von denen jeder relativ zu dem Festkontakt derart bewegbar ist, dass er eine erste Endposition, in der er mit dem Ableitkontakt elektrisch leitend verbunden ist und an dem Festkontakt anliegt, und eine zweite Endposition, in der er von dem Festkontakt getrennt ist, einnehmen kann;
• – einen Abbrandkontakt, der relativ zu dem Festkontakt derart bewegbar ist, dass er eine erste Endposition, in der er mit dem Ableitkontakt elektrisch leitend verbunden ist und an dem Festkontakt anliegt, und eine zweite Endposition, in der er von dem Festkontakt getrennt ist, einnehmen kann;

wobei

• – die Bewegkontakte und der Abbrandkontakt gemeinsam derart bewegt werden können, dass der Abbrandkontakt die erste Endposition vor den Bewegkontakten einnimmt und nach den Bewegkontakten verlässt;
• – die Bewegkontakte und der Abbrandkontakt stapelartig derart angeordnet sind, dass die Anzahl der Bewegkontakte auf einer Seite des Abbrandkontakts höchstens um eins größer als die Anzahl der Bewegkontakte auf der gegenüberliegenden Seite des Abbrandkontakts ist.

The invention proposes, according to a third aspect, a switch for a switching device, comprising

• A leakage contact;
• - a fixed contact;
• - At least two moving contacts, each of which is movable relative to the fixed contact such that it has a first end position in which it is electrically conductively connected to the Ableitkontakt and rests against the fixed contact, and a second end position in which he separated from the fixed contact is, can take;
• A consumable contact which is movable relative to the fixed contact such that it occupies a first end position in which it is electrically conductively connected to the diverting contact and bears against the fixed contact, and a second end position in which it is separated from the fixed contact can;

in which

• - The moving contacts and the Abbrandkontakt can be moved together so that the Abbrandkontakt occupies the first end position in front of the moving contacts and leaves after the Bewegkontakten;
• - The moving contacts and the Abbrandkontakt are stacked arranged such that the number of moving contacts on one side of the Abbrandkontakts is at most one greater than the number of Bewegkontakte on the opposite side of the Abbrandkontakts.

Preferably, the switch proposed according to the third aspect is designed like the switch proposed according to the first aspect.

• – einen Ableitkontakt;
• – einen Festkontakt;
• – wenigstens einen Bewegkontakt, von denen jeder relativ zu dem Festkontakt derart bewegbar ist, dass er eine erste Endposition, in der er mit dem Ableitkontakt elektrisch leitend verbunden ist und an dem Festkontakt anliegt, und eine zweite Endposition, in der er von dem Festkontakt getrennt ist, einnehmen kann;
• – zwei Abbrandkontakte, von denen jeder relativ zu dem Festkontakt derart bewegbar ist, dass er eine erste Endposition, in der er mit dem Ableitkontakt elektrisch leitend verbunden ist und an dem Festkontakt anliegt, und eine zweite Endposition, in der er von dem Festkontakt getrennt ist, einnehmen kann;

wobei

• – die Bewegkontakte und die Abbrandkontakte gemeinsam derart bewegt werden können, dass wenigstens einer der Abbrandkontakte die erste Endposition vor den Bewegkontakten einnimmt und nach den Bewegkontakten verlässt;
• – die Bewegkontakte und die Abbrandkontakte stapelartig derart angeordnet sind, dass die Bewegkontakte zwischen den Abbrandkontakten angeordnet sind.

The invention proposes, according to a fourth aspect, a switch for a switching device, comprising

• A leakage contact;
• - a fixed contact;
• - At least one moving contact, each of which is movable relative to the fixed contact such that it has a first end position in which it is electrically conductively connected to the Ableitkontakt and rests against the fixed contact, and a second end position in which he separated from the fixed contact is, can take;
• - Two Abbrandkontakte, each of which is movable relative to the fixed contact such that it has a first end position in which it is electrically conductively connected to the Ableitkontakt and rests against the fixed contact, and a second end position in which it is separated from the fixed contact , can take;

in which

• - The moving contacts and the Abbrandkontakte can be moved together so that at least one of the Abbrandkontakte occupies the first end position in front of the Bewegkontakten and leaves after the Bewegkontakten;
• - The moving contacts and Abbrandkontakte are stacked arranged such that the moving contacts are disposed between the Abbrandkontakten.

• – jeder Bewegkontakt relativ zu dem Ableitkontakt derart bewegbar ist, dass er in der ersten Endposition an dem Ableitkontakt anliegt und in der zweiten Endposition von dem Ableitkontakt getrennt ist; und/oder
• – jeder Abbrandkontakt relativ zu dem Ableitkontakt derart bewegbar ist, dass er in der ersten Endposition an dem Ableitkontakt anliegt und in der zweiten Endposition von dem Ableitkontakt getrennt ist.

In the switch according to the third aspect and the switch according to the fourth aspect, it can be provided that

• - Each moving contact relative to the Ableitkontakt is movable such that it rests in the first end position on the Ableitkontakt and is separated in the second end position of the Ableitkontakt; and or
• - Each Abbrandkontakt is movable relative to the Ableitkontakt such that it rests in the first end position on the Ableitkontakt and is separated in the second end position of the Ableitkontakt.

• – jeder Bewegkontakt relativ zu dem Ableitkontakt derart bewegbar ist, dass er in der zweiten Endposition mit dem Ableitkontakt elektrisch leitend verbunden ist; und/oder
• – jeder Abbrandkontakt relativ zu dem Ableitkontakt derart bewegbar ist, dass er in der zweiten Endposition mit dem Ableitkontakt elektrisch leitend verbunden ist.

In the switch according to the third aspect and the switch according to the fourth aspect, it can be provided that

• - Each moving contact relative to the Ableitkontakt is movable such that it is electrically conductively connected in the second end position with the Ableitkontakt; and or
• - Each Abbrandkontakt is movable relative to the Ableitkontakt such that it is electrically conductively connected in the second end position with the Ableitkontakt.

Preferably, the switch proposed according to the fourth aspect is designed like the switch proposed according to the first aspect.

The statements and explanations concerning one of the aspects of the invention, in particular regarding individual features of this aspect, apply correspondingly also analogously to the other aspects of the invention.

Embodiments of the invention will now be described by way of example with reference to the accompanying drawings. However, the individual features resulting therefrom are not limited to the individual embodiments, but can be connected and / or combined with individual features described above and / or with individual features of other embodiments. The details in the drawings are to be interpreted as illustrative, but not restrictive. The reference signs contained in the claims are not intended to limit the scope of the invention in any way, but to refer only to the embodiments shown in the drawings.

The drawings show in

1 a perspective view of a first embodiment of a permanent main switch for a diverter switch;

2 a plan view of a first embodiment of a diverter switch with the permanent main switch of 1 in a first operating position and a first embodiment of an on-load tap-changer;

3 the diverter switch the 2 in a second operating position;

4 a sectional partial view of a second embodiment of the permanent main switch;

5 a plan view of a second embodiment of the diverter switch and a second embodiment of the on-load tap changer.

In the 1 . 2 and 3 is a first embodiment of a switch 10 for a switching device 11 shown schematically, the example here a permanent main switch 10 for a diverter switch 11 ( 2 to 4 ) of an on-load tap-changer 12 ( 5 ).

In this embodiment, the switch comprises 10 a leakage contact 13 , a primary fixed contact 14 , a secondary fixed contact 15 , twelve primary-motor contacts 16 , twelve secondary moving contacts 17 , a primary burnup contact 18 , a primary burnup contact 19 and a contact carrier 20 with a first support plate 201 and a second support plate 202 (in 3 not shown).

Every primary moving contact 16 is relative to the Ableitkontakt 13 and the primary fixed contact 14 around a pivot axis 21 pivotally mounted such that it has a first end position in 2 is shown, and can assume a second end position in 1 . 3 is shown. In the first end position it lies with a first attachment point 22 at the discharge contact 13 and with a second investment point 23 at the primary fixed contact 14 on, and in the second end position it is from these contacts 13 . 14 separated. Every secondary moving contact 17 is relative to the Ableitkontakt 13 and the secondary hard contact 15 around the pivot axis 21 pivotally mounted such that it has a first end position in 1 . 3 is shown, and can assume a second end position in 2 is shown. In the first end position it lies with a third point of attachment 24 at the discharge contact 13 and with a fourth investment point 25 at the secondary fixed contact 15 on, and in the second end position it is from these contacts 13 . 15 separated.

The primary burnup contact 18 is relative to the Ableitkontakt 13 and the primary fixed contact 14 around the pivot axis 21 pivotally mounted such that it has a first end position in which it is connected to a fifth point of attachment 26 at the discharge contact 13 and with a sixth investment point 27 at the primary fixed contact 14 is present, and can assume a second end position in which he of these contacts 13 . 14 is disconnected. The secondary burnup contact 19 is relative to the Ableitkontakt 13 and the secondary hard contact 15 around the pivot axis 21 pivotally mounted such that it has a first end position in which it is connected to a seventh contact point 28 at the discharge contact 13 and with an eighth investment point 29 at the secondary fixed contact 15 is present, and can assume a second end position in which he of these contacts 13 . 15 is disconnected.

The primary moving contacts 16 and the primary burnup contact 18 are so to a primary contact stack 16 / 18 stacked that in each case six primary moving contacts 16 below and above the primary burnup contact 18 lie. The secondary moving contacts 17 and the secondary burnup contact 19 are so to a secondary contact stack 17 / 19 stacked that in each case six secondary moving contacts 17 below and above the secondary burnup contact 19 lie. The swivel contacts 16 . 17 are identical to each other. The burn-off contacts 18 . 19 are identical to each other.

The contact carrier 20 includes a lever 30 ( 3 ) with three Y-shaped arms 301 . 302 . 303 and a fork 31 , The support plates 201 . 202 are identical and arranged in parallel and aligned one above the other and are made of metal. The lever 30 is between the support plates 201 . 202 arranged and with three bolts passing through the free ends of the two lateral arms 301 . 302 and a middle portion of the middle arm 303 go, attached to this. The fork 31 is on the lever 30 between the two lateral arms 301 . 302 on the from the middle arm 303 attached to the opposite side and has a slot in the extension of the middle arm 303 runs and on its outer, the lever 30 distant end is open. The contact stacks 16 / 18 . 17 / 19 are between the support plates 201 . 202 arranged and with two times two guide pins 32 passing through parallel slots in the contact stacks 16 / 18 . 17 / 19 go and be made of metal, attached to this movable. The free end of the middle arm 303 is about the pivot axis 21 pivoted. Thus, the support plates 201 . 202 and consequently also the contact carrier 20 , the fork 31 and the contact stacks 16 / 18 . 17 / 19 relative to the diverter contact 13 and the fixed contacts 14 . 15 around the pivot axis 21 pivoted. The contact stacks 16 / 18 . 17 / 19 and the contact carrier 20 thus form a one-sided lever with respect to the pivot axis 21 ,

The contact stacks 16 / 18 . 17 / 19 are symmetrical to the lever 30 on both sides of the middle arm 303 arranged and supported with their groundbreaking from the investment points back surfaces on compression springs ( 4 ) on the lateral arms 301 . 302 from. This causes the contact stacks 16 / 18 . 17 / 19 such on the contact carrier 20 mounted so that they each in their first end position resiliently against the Ableitkontakt 13 and the associated fixed contact 14 . 15 are biased.

Every burnup contact 18 ; 19 and the respective associated moving contacts 16 ; 17 are formed and arranged and can be pivoted together in such a way that the respective burn-off contact 18 ; 19 the first end position in front of his moving contacts 16 ; 17 takes and leaves after them. For this purpose, the respective burnup contact 18 ; 19 in the second end position relative to its moving contacts 16 ; 17 arranged such that its investment points 26 . 27 ; 28 . 29 opposite the investment points 22 . 23 ; 24 . 25 this moving contacts 16 ; 17 protrude.

The contacts 13 . 14 . 15 . 16 . 17 . 18 . 19 are each monolithic. The discharge contact 13 and the pivot axis 21 are symmetrical between the fixed contacts 14 . 15 arranged.

For each primary fixed contact 14 lie in the first end position of the first and the second investment point 23 . 24 on a first connecting straight 33 that is perpendicular and skewed to the pivot axis 21 is, and delimit a first link 34 , The lotus point 35 the first connecting straight line 33 , that is, on the first connecting line 33 lying end point of the solder between the pivot axis 21 and the first connecting straight line 33 , is outside or inside the first link 34 , For every secondary fixed contact 15 lie in the first end position of the third and fourth investment point 25 . 26 on a second connecting line 36 that is perpendicular and skewed to the pivot axis 21 is, and delimit a second link 37 , The lotus point 38 the second connecting straight line 36 , that is, on the second connecting line 36 lying end point of the solder between the pivot axis 21 and the second connecting line 36 , is outside or inside the second link 37 ,

In the 2 and 3 are also a first embodiment of a diverter switch 11 and a first embodiment of an on-load tap changer 12 shown schematically.

In this embodiment, the on-load tap-changer comprises 12 the diverter switch 11 , a shift shaft 39 parallel to the pivot axis 21 is, and a contact cylinder 40 through which the shift shaft 39 runs coaxially. The discharge contact 13 and the fixed contacts 14 . 15 are through the contact cylinder 40 guided and attached to this.

In this embodiment, the diverter switch comprises 11 a base plate 41 (in 3 . 5 not shown) of a scaffold not shown in detail, a triangular driver 42 and a takeaway role 43 , The shift shaft 39 and the lever 30 are rotatable on the base plate 41 stored. The driver 42 sits non-rotatably on the stem 39 and carries the driver role in a corner 43 , The driver role 43 sits slidably in the slot of the fork 31 , so that a rotation of the shift shaft 39 over the driver 42 , the takeaway role 43 and the fork 31 the lever 30 in opposite directions around the swivel axis 21 pivots and this pivotal movement over the three bolts, the support plates 201 . 202 and the four guide bolts 32 on the contact stacks 16 / 18 . 17 / 19 is transmitted.

In the 2 is the diverter switch 11 shown in a first operating position, in which the driver role 43 at the outer end of the long hole of the fork 31 sits and the primary contact stack 16 / 18 its first end position and the secondary contact stack 17 / 19 takes his second final position. The driver role 43 presses against the primary hard contact 14 near hole wall and thus the primary contact stack 16 / 18 over the two guide pins assigned to it 32 against the discharge contact 13 and the primary fixed contact 14 , The of the discharge contact 13 and the secondary hard contact 15 separate secondary contact stacks 17 / 19 is replaced by its associated compression springs against the two guide pins assigned to it 32 pressed. Thus, the moving contacts 16 . 17 with each other and with the Abbrandkontakten 18 . 19 electrically connected.

In the 3 is the diverter switch 11 shown in a second operating position in which the driver role 43 - as in the first operating position - at the outer end of the long hole of the fork 31 sits and the secondary contact stack 17 / 19 its first end position and the primary contact stack 16 / 18 takes his second final position. The driver role 43 presses - unlike the first operating position - against the secondary fixed contact 15 near hole wall and thus the secondary contact stack 17 / 19 over the two guide pins assigned to it 32 against the discharge contact 13 and the secondary hard contact 15 , The of the discharge contact 13 and the primary fixed contact 14 separate primary contact stacks 16 / 18 is determined by its associated compression springs ( 4 ) against the two guide pins assigned to it 32 pressed. Thus, the moving contacts 16 . 17 with each other and with the Abbrandkontakten 18 . 19 electrically connected.

In the 4 is a second embodiment of the permanent master switch 10 shown schematically in a partial section. This second embodiment is similar to the first embodiment, so that below all the differences are explained in more detail below.

In this embodiment, the permanent main switch comprises 10 in the primary contact stack 16 / 18 two primary burnup contacts 18 and four primary moving contacts 16 stacked such that the primary moving contacts 16 between the primary burnup contacts 18 are arranged. The figure shows on the left the primary contact stack 16 / 18 shortly before reaching or shortly after leaving the second end position and on the right in the second end position. In addition, the springs are 44 between the back surfaces of the primary contact stack 16 / 18 or the back surfaces of the primary moving contacts 16 and the primary burnup contacts 18 and the side arm 301 shown. The secondary contact stack 17 / 19 is analogous, but in 4 not shown.

In the 5 is a second embodiment of the diverter switch 11 and a second embodiment of the on-load tap changer 12 shown schematically. These second embodiments are similar to the first embodiments, so that below all the differences are explained in detail.

In this embodiment, the diverter switch 11 and the on-load tap-changer 12 three-phase design. The diverter switch 11 comprises for each phase U, V, W of a three-phase system in each case a driving role 43U . 43V . 43W in the corners of the driver 42 are arranged, and in each case a permanent main switch 10U . 10V . 10W , The three drive rollers 43 and the three permanent main switches 10 are offset by 120 ° about the switching shaft 39 are arranged around and by turning the stem 39 synchronously operated.

LIST OF REFERENCE NUMBERS

10

Switch, permanent main switch

11

Switching device, diverter switch

12

OLTC

13

discharge contact

14

Primary fixed contact

15

Secondary fixed contact

16

Primary moving contact

17

Secondary moving contact

18

Primary arcing contact

19

Secondary arcing

20

contact support

201/202

first / second support plate of 20

21

swivel axis

22

first investment point

23

second investment point

24

third investment point

25

fourth investment point

26

fifth investment point

27

sixth investment point

28

seventh investment point

29

eighth investment point

30

lever

301/302/303

first lateral / second lateral / middle arm of 30

31

fork

32

guide pins

33

first connecting line

34

first link

35

first lotus point

36

second connecting line

37

second link

38

second lotus point

39

shift shaft

40

contact cylinder

41

baseplate

42

driver

43

driver rollers

44

compression springs

AND MANY MORE

Phases of a three-phase network

Claims (15)

Switch ( 10 ) for a switching device ( 11 ), comprising - a leakage contact ( 13 ); - a primary fixed contact ( 14 ); - a secondary fixed contact ( 15 ); A primary moving contact ( 16 ), which is relative to the Ableitkontakt ( 13 ) and the primary fixed contact ( 14 ) is movable in such a way that it has a first end position in which it has a first contact point ( 22 ) at the discharge contact ( 13 ) and with a second investment point ( 23 ) at the primary fixed contact ( 14 ), and a second end position in which it is from the Ableitkontakt ( 13 ) and the primary fixed contact ( 14 ) is isolated, can take; A secondary moving contact ( 17 ), which is relative to the Ableitkontakt ( 13 ) and the secondary fixed contact ( 17 ) is movable in such a way that it has a first end position in which it is connected to a third contact point ( 24 ) at the discharge contact ( 13 ) and with a fourth investment point ( 25 ) on the secondary fixed contact ( 15 ), and a second end position in which it is from the Ableitkontakt ( 13 ) and the secondary fixed contact ( 15 ) is isolated, can take. Switch ( 10 ) according to the previous claim, wherein - the primary moving contact ( 16 ) about a first pivot axis ( 21 ) is pivotable. Switch ( 10 ) according to one of the preceding claims, wherein - the discharge contact ( 13 ) is monolithic; - the primary fixed contact ( 14 ) is monolithic; - the primary moving contact ( 16 ) is monolithic. Switch ( 10 ) according to one of the preceding claims, wherein - in the first end position, the first and second attachment points ( 22 . 23 ) on a first connecting line ( 33 ) lie; - the first connecting line ( 33 ) non-parallel or perpendicular or skewed to the first pivot axis ( 21 ). Switch ( 10 ) according to one of the preceding claims, wherein - in the first end position, the first and second attachment points ( 22 . 23 ) on a first connecting line ( 33 ) and a first link ( 34 ) limit; - the first connecting line ( 33 ) and the first pivot axis ( 21 ) intersect and their intersection outside or within the first link ( 34 ), or the first connecting line ( 33 ) and the first pivot axis ( 21 ) are skewed and the lotus point ( 35 ) of the first connecting line ( 33 ) outside or within the first link ( 34 ) lies. Switch ( 10 ) according to one of the preceding claims, wherein - the secondary moving contact ( 17 ) about a second pivot axis ( 21 ) which is parallel or coaxial with the first pivot axis ( 21 ), is pivotable; - the discharge contact ( 13 ) and the pivot axes ( 21 ) symmetrically between the primary fixed contact ( 14 ) and the secondary fixed contact ( 15 ) are arranged. Switch ( 10 ) according to one of the preceding claims, comprising - at least one additional primary moving contact ( 16 ), which is relative to the Ableitkontakt ( 13 ) and the primary fixed contact ( 14 ) is movable such that it has a first end position in which it is connected to the discharge contact ( 13 ) and the primary fixed contact ( 14 ), and a second end position in which it is from the Ableitkontakt ( 13 ) and the primary fixed contact ( 14 ) is isolated, can take; and / or - at least one additional secondary moving contact ( 17 ), which is relative to the Ableitkontakt ( 13 ) and the secondary fixed contact ( 15 ) is movable such that it has a first end position in which it is connected to the discharge contact ( 13 ) and the secondary fixed contact ( 15 ), and a second end position in which it is from the Ableitkontakt ( 13 ) and the secondary fixed contact ( 15 ) is isolated, can take. Switch ( 10 ) according to one of the preceding claims, comprising - at least one primary burnup contact ( 18 ), which is relative to the Ableitkontakt ( 13 ) and the primary fixed contact ( 14 ) is movable in such a way that it has a first end position in which it is connected to a fifth contact point ( 26 ) at the discharge contact ( 13 ) and with a sixth annex point ( 27 ) at the primary fixed contact ( 14 ), and a second end position in which it is from the Ableitkontakt ( 13 ) and the primary fixed contact ( 14 ) is isolated, can take; where - the primary moving contacts ( 16 ) and the primary burn-off contacts ( 18 ) can be jointly moved or pivoted so that at least one of the primary Abbrandkontakte ( 18 ) the first end position in front of the primary moving contacts ( 16 ) and after the primary moving contacts ( 16 ) leaves. Switch ( 10 ) according to the previous claim, wherein - a primary burnup contact ( 18 ) and at least two primary moving contacts ( 16 ) available; - the primary moving contacts ( 16 ) and the primary burnup contact ( 18 ) are stacked such that the number of primary moving contacts ( 16 ) on one side of the primary burnup contact ( 18 ) at most one greater than the number of primary moving contacts ( 16 ) on the opposite side of the primary burnup contact ( 18 ). Switch ( 10 ) according to the previous or previous claim, wherein - two primary burn-off contacts ( 18 ) and at least one primary moving contact ( 16 ) available; - the primary moving contacts ( 16 ) and the primary burn-off contacts ( 18 ) are stacked such that the primary moving contacts ( 16 ) between the primary burn-off contacts ( 18 ) are arranged. Switch ( 10 ) according to one of the preceding claims, wherein - each burn-off contact ( 18 . 19 ) in the second end position relative to the associated moving contacts ( 16 . 17 ) is arranged such that its investment points ( 26 . 27 . 28 . 29 ) against the investment points ( 22 . 23 . 24 . 25 ) of these moving contacts ( 16 ) protrude. Switch ( 10 ) according to one of the preceding claims, comprising - a contact carrier ( 20 ), at which the moving contacts ( 16 . 17 ) and / or the burn-off contacts ( 18 . 19 ) are mounted and relative to the Ableitkontakt ( 13 ) and the fixed contacts ( 14 . 15 ) is movable; in which - the contact carrier ( 20 ) a first support plate ( 201 ), which relative to the Ableitkontakt ( 13 ) and the fixed contacts ( 14 . 15 ) is movable; - the moving contacts ( 16 . 17 ) and / or the burn-off contacts ( 18 . 19 ) on the first support plate ( 201 ) are attached; - the contact carrier ( 20 ) a second support plate ( 202 ), which relative to the Ableitkontakt ( 13 ) and the fixed contacts ( 14 . 15 ) about the first pivot axis ( 21 ) is pivotally mounted; - the moving contacts ( 16 . 17 ) and / or the burn-off contacts ( 18 . 19 ) on the second support plate ( 202 ) are attached; - the support plates ( 201 . 202 ) are parallel to each other; - the moving contacts ( 16 . 17 ) and / or the burn-off contacts ( 18 . 19 ) between the support plates ( 201 . 202 ) are arranged. Switch ( 10 ) according to one of the preceding claims, wherein - each moving contact ( 16 . 17 ) and / or each burn-off contact ( 18 . 19 ) on the contact carrier ( 20 ) is mounted so that it in the first end position resiliently against the Ableitkontakt ( 13 ) and the associated fixed contact ( 14 . 15 ) is biased. Switch ( 10 ) according to one of the preceding claims, which is used as permanent main switch ( 10 ) for a diverter switch ( 11 ) of an on-load tap changer ( 12 ) is trained. Diverter switch ( 11 ) for an on-load tap-changer ( 12 ) of a variable transformer, comprising - a permanent main switch ( 10 ) formed according to the preceding claim, comprising • a secondary fixed contact ( 15 ); • a secondary moving contact ( 17 ), which is relative to the Ableitkontakt ( 13 ) and the secondary fixed contact ( 15 ) is movable in such a way that it has a first end position in which it is connected to a third contact point ( 24 ) at the discharge contact ( 13 ) and with a fourth investment point ( 25 ) on the secondary fixed contact ( 15 ), and a second end position in which it is from the Ableitkontakt ( 13 ) and the secondary fixed contact ( 15 ) is isolated, can take; A primary main line connected to the primary fixed contact 14 ) is connected; A secondary main line connected to the secondary fixed contact ( 15 ) is connected; wherein - the discharge contact ( 13 ) is monolithic; - the primary fixed contact ( 14 ) is monolithic; - the secondary fixed contact ( 15 ) is monolithic; - the primary moving contact ( 16 ) is monolithic; - the secondary moving contact ( 17 ) is monolithic.

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