EP3109882B1 - Locking device - Google Patents

Locking device Download PDF

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Publication number
EP3109882B1
EP3109882B1 EP16305634.4A EP16305634A EP3109882B1 EP 3109882 B1 EP3109882 B1 EP 3109882B1 EP 16305634 A EP16305634 A EP 16305634A EP 3109882 B1 EP3109882 B1 EP 3109882B1
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EP
European Patent Office
Prior art keywords
slide
switchgear
locking apparatus
bolt
accordance
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EP16305634.4A
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German (de)
French (fr)
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EP3109882A1 (en
Inventor
Siegfried Dobler
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP3109882A1 publication Critical patent/EP3109882A1/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/46Interlocking mechanisms
    • H01H33/52Interlocking mechanisms for interlocking two or more switches
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20Interlocking, locking, or latching mechanisms
    • H01H9/28Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H9/285Locking mechanisms incorporated in the switch assembly and operable by a key or a special tool

Definitions

  • the present invention relates to a locking device for a switchgear, in particular a medium-voltage switchgear, with at least one lock and a key.
  • a locking device for a switchgear in particular medium-voltage switchgear, with at least one lock and a key, which are designed to mechanically pick up the switching position of at least one switching unit, the lock having a bolt and at least two slides each with at least one link guide for the bolt, famous.
  • the lock and the key are designed to mechanically pick up the switching position of at least one switching unit and the position of a protective device for the switching unit and to couple them with one another, the lock having a bolt and at least two slides each with at least one link guide for the bolt.
  • the bolt can be designed as a cylinder which can be rotated by means of the key.
  • the bolt can engage in both link guides, as a result of which the two slides are coupled to one another.
  • the sliders can preferably be used to trigger different functions.
  • more than two slides are also possible.
  • the lock can include a further slide in order to trigger an additional function or to query a further position of an element of the switchgear assembly. All functions can be linked to one another.
  • the locking device can also be used without problems at high temperatures. This is also inexpensive and space-saving. Furthermore can the locking device can also be retrofitted in a switchgear.
  • the locking device prevents in a simple manner that a short circuit can occur when a switchgear is grounded.
  • a switching unit in a switchgear is called a disconnector, or earthing switch, or circuit breaker or switch-disconnector.
  • a switchgear consists of at least one switching unit, but usually of several different switching units.
  • one of the slides is assigned to the switching unit and another slide is assigned to the protective device.
  • the slide and the switching unit and / or the slide and the protective device are preferably connected to one another and, in particular, are designed as a common component.
  • the switching unit and the protective device are also coupled to one another.
  • the switching unit can only be actuated when the protective device has released a corresponding actuation. In this way, safety when handling the switchgear is guaranteed in a simple and inexpensive manner.
  • the protective device comprises a closure of an insertion opening for an actuating crank.
  • the switch positions of the disconnector include an on and an off position. The disconnector can be switched on and off using the operating crank.
  • the positions of the protective device include, in particular, a release position and a closed position.
  • the slide can be connected to the closure.
  • the insertion opening can be opened or closed by moving the slide.
  • the crank can only be inserted into the insertion opening in the release position. In the closed position, however, the insertion opening is closed.
  • the slides are arranged parallel to one another.
  • the slides each comprise an at least partially flat, in particular beveled, sheet metal.
  • the slides are arranged one behind the other so that the bolt can engage in both link guides of the slides.
  • the link guides are each designed as a recess in the slide.
  • the bolt can thus extend through the first link guide to the second link guide.
  • the second link guide does not have a recess. So it is also conceivable that the second link guide as separate component attached to the slide or formed from the slide material itself. However, a cutout has the advantage that it can be produced inexpensively.
  • the recess can, for example, be milled or lasered from the slide.
  • the link guides each have at least one narrow area and one wide area.
  • the wide area is wider than the narrow area.
  • the wide area can preferably be arranged below the narrow area.
  • the respective areas can in particular have a rectangular shape.
  • a transition area can preferably be provided between the two areas.
  • a bevel can be provided on both sides between the rectangle of the wide area and the rectangle of the narrow area in order to ensure a smooth transition between the areas.
  • the bolt of the lock comprises a transverse side and a longitudinal side, the transverse side being designed to be narrower than the longitudinal side.
  • the bolt can thus in particular have a rectangular cross section.
  • the bolt has the shape of a cylinder with at least two flattened sides.
  • the shape of the bolt can preferably be adapted to the shape of the link guide.
  • the transverse side of the bolt is designed to be narrower than the narrow area of the link guide.
  • the slide can thus also be moved over the transverse side of the bolt when the bolt is in the narrow area of the link guide.
  • the longitudinal side of the bolt is wider than the narrow area and narrower than the wide area of the link guide.
  • the slide cannot therefore be moved over the long side of the bolt, particularly in the narrow area. A movement of the slide over the long side of the bolt is only possible, if at all, in the wide area of the link guide.
  • the key and thus the bolt can be adjusted between a horizontal and a vertical position.
  • the slide can preferably only be moved freely when the key is in a vertical position.
  • the bolt also extends in the vertical direction.
  • the transverse side of the bolt interacts with the link guide so that the slider can also be pushed over the bolt in the narrow area.
  • the bolt extends in the transverse direction.
  • the wide long side of the bolt interacts with the link guide.
  • the narrow area of the slide cannot be pushed over the wide long side of the bolt.
  • the slide cannot be moved freely.
  • two locks are provided which are coupled to one another by at least one common slide, in particular by the two slides.
  • the key of one lock can, for example, be used for an earthing switch of the busbar when the disconnector is switched off, while the key of the other lock can be used for further earthing on the high-voltage side with the disconnector switched off.
  • a slide can thus have two link guides. These can preferably be of identical construction. They can also Link guides each be arranged at the same height position on the slide.
  • the invention also relates to a switchgear, in particular a medium-voltage switchgear, with a locking device according to the invention.
  • the switching unit can also comprise an earthing switch and / or circuit breaker instead of or in addition to a disconnector. Furthermore, several different switching units can be provided.
  • FIG 1A a section of a switchgear 10 with a locking device is shown.
  • the locking device comprises three locks 12, 12 ', 12 ".
  • the locks 12, 12', 12" are attached to a cover 16.
  • a key 14, 14 ' is inserted in each of the first and second locks 12, 12' and assigned to a switching device, for example an isolating switch, an earthing switch being able to be operated with a removed key.
  • a switching device for example an isolating switch, an earthing switch being able to be operated with a removed key.
  • the key can only be removed when the circuit breaker is in an open position.
  • the lock 12 ′′ is assigned to a further switching device, for example an earthing switch, a disconnector with a key removed can be operated.
  • a further switching device for example an earthing switch
  • a disconnector with a key removed can be operated.
  • the key can only be removed when the earthing switch is in an open position.
  • the key 12 can be withdrawn under certain conditions in order to be used for earthing on the high-voltage side.
  • FIG. 3 is a sectional view of the switchgear assembly according to FIG Figure 1A shown.
  • the lock 12 comprises a slide 18 of a switching unit and a slide 20 of a protective device.
  • the switching unit can include, for example, an isolating switch, an earthing switch or a circuit breaker.
  • the protective device has a closure of an insertion opening for a crank. It is thus determined by the slide 20 whether an insertion opening for the crank is open or closed.
  • FIG 1C a rear perspective view of the switchgear is shown.
  • a bolt 22 of the lock 12 engages through the slides 18, 20.
  • the locks 12, 12 ′ are coupled to one another in this way via the slides 18, 20.
  • the two slides 18, 20 are also coupled to one another via the bolt 22.
  • the lock 12 ′′ is not connected to the other locks 12, 12 ′ via the slides 18, 20.
  • the slides 18, 20 are shown in detail in Figures 2A and 2B shown. These each include two link guides 24 for the bolt 22.
  • the link guides 24 have a narrow area 26 in an upper section and a wide area 28 in a lower section.
  • the bolt 22 also has a narrow transverse side 30 and a wide longitudinal side 32.
  • the slides 18, 20 can only be moved in the narrow area 26 over the bolt 22 if this is arranged in a vertical position, since the transverse side 30 is narrower than the narrow area 26 is.
  • the latch 22 can have a rectangular cross section. Alternatively, it is also possible for at least two sides to be convexly curved.
  • a microswitch 34 which transmits additional position information, can also be switched on or off with the aid of the keys 14, 14 '.
  • the slides 18, 20 are connected to the switchgear 10. Due to the shape of the link guides 24, the corresponding positions of the keys 14, 14 'can be queried.
  • the slide 18 of the switching unit can be moved completely downwards.
  • the key 14 cannot be removed in this position.
  • the slide 20 of the protective device is also displaceable.
  • the bolt 22 can be brought into its horizontal position.
  • the isolating switch is in its open position and the key 14 can be removed. If the key 14 is removed, the isolating switch cannot be switched on, since the insertion opening for the actuating crank of the isolating switch is blocked by a lock coupled to the slide 20. A user is protected in this way.
  • a separation takes place according to the following sequence: When the key is in the horizontal position, the key 14 can be withdrawn.
  • the separating drive is off, the slide 18 of the switching unit is up and blocked.
  • the slide 20 of the protective device is also blocked and cannot be moved downwards.
  • the bolt 22 is in a vertical position.
  • the key 14 is in the lock 12, although it can still be rotated, it can no longer be removed.
  • the separation drive is still off.
  • the slide 18 of the switching unit is no longer blocked.
  • the slide 18 is at the top.
  • the slide 20 of the protective device can now be moved when inserting a crank to operate the isolating switch by opening the lock manually. If the slide 20 of the protective device is pushed down, the key 14 can no longer be rotated. The separating drive can then be switched on, as a result of which the slide 18 of the switching unit is moved downwards.
  • the keys 14, 14 ' cannot be rotated and cannot be removed.
  • the earthing switch cannot be operated.
  • the crank In order to operate the earthing switch, the crank must first be removed. When the crank is removed, the slide 20 of the protective device moves again when the lock that closes the crank opening is closed.
  • each of the slides 18, 20 has two link guides 24. These each have a narrow area 26 and a wide area 28. These areas 26, 28 are essentially rectangular. In a transition area, the wide area 28 can taper to the width of the narrow area 26.
  • a mechanical key query is ensured by the slide 18, 20.
  • the occurrence of artificial short circuits can be prevented without an electromagnetic query of the position of the switches being necessary.

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  • Switch Cases, Indication, And Locking (AREA)

Description

Die vorliegende Erfindung betrifft eine Verriegelungsvorrichtung für eine Schaltanlage, insbesondere Mittelspannungsschaltanlage, mit zumindest einem Schloss und einem Schlüssel.The present invention relates to a locking device for a switchgear, in particular a medium-voltage switchgear, with at least one lock and a key.

Aus dem Dokument FR 1 365 484 A ist eine Verriegelungsvorrichtung für eine Schaltanlage, insbesondere Mittelspannungsschaltanlage, mit zumindest einem Schloss und einem Schlüssel, die dazu ausgebildet sind, die Schaltstellung wenigstens einer Schalteinheit mechanisch abzugreifen, wobei das Schloss einen Riegel und zumindest zwei Schieber mit jeweils wenigstens einer Kulissenführung für den Riegel aufweist, bekannt.From the document FR 1 365 484 A is a locking device for a switchgear, in particular medium-voltage switchgear, with at least one lock and a key, which are designed to mechanically pick up the switching position of at least one switching unit, the lock having a bolt and at least two slides each with at least one link guide for the bolt, famous.

Beim Betätigen von Schaltern in Schaltanlagen ist grundsätzlich dafür zu sorgen, dass durch versehentliche Fehlbedienung keine Kurzschlüsse erzeugt werden. Hierzu ist beispielsweise bekannt, Trenn- und Erdungsschalter innerhalb eines Schaltfelds derart zu verriegeln, dass bei einem betätigbaren Trennschalter der Erdungsschalter verriegelt ist und umgekehrt. Hierdurch kann ist dafür gesorgt, dass entweder nur der Trennschalter oder nur der Erdungsschalter betätigt werden kann.When actuating switches in switchgear systems, it is essential to ensure that no short circuits are generated due to inadvertent operating errors. For this purpose, it is known, for example, to lock disconnectors and earthing switches within a switch panel in such a way that the earthing switch is locked in the case of an actuatable disconnector, and vice versa. This ensures that either only the disconnector or only the earthing switch can be operated.

Bei einem Einspeisefeld einer Schaltanlage können mehrere Schlösser und Schlüssel vorgesehen sein, um mit Hilfe eines freien Schlüssels zu gewährleisten, dass beispielsweise der Erdungsschalter nur in bestimmten Zuständen anderer Schalter betätigt werden kann. Beispielsweise muss der Trennschalter offen sein und eine Kurbel zum Betätigen des Trennschalters darf nicht gesteckt sein. Bei anderen Schaltfeldern ist auch der Einsatz lediglich eines Schlosses und eines Schlüssels möglich.Several locks and keys can be provided in a feeder panel of a switchgear system in order to ensure with the aid of a free key that, for example, the earthing switch can only be operated in certain states of other switches. For example, the circuit breaker must be open and a crank to operate the circuit breaker must not be inserted. With other switch panels it is also possible to use just one lock and one key.

Bei herkömmlichen Schaltanlagen wird die jeweilige Position der Schalter durch eine elektromagnetische Abfrage bestimmt. Diese sind jedoch vergleichsweise störanfällig und kostenintensiv.In conventional switchgear, the respective position of the switch is determined by an electromagnetic query. However, these are comparatively prone to failure and costly.

Es ist daher die Aufgabe der Erfindung, eine Schaltanlage sowie eine kostengünstige Verriegelungsvorrichtung für eine Schaltanlage zu schaffen, welche eine geringe Störanfälligkeit aufweist.It is therefore the object of the invention to create a switchgear and an inexpensive locking device for a switchgear which is less susceptible to failure.

Die Aufgabe wird durch eine Schaltanlage sowie eine Verriegelungsvorrichtung für eine Schaltanlage jeweils mit den Merkmalen der unabhängigen Ansprüche gelöst.The object is achieved by a switchgear and a locking device for a switchgear, each with the features of the independent claims.

Erfindungsgemäß sind das Schloss und der Schlüssel dazu ausgebildet, die Schaltstellung wenigstens einer Schalteinheit sowie die Position einer Schutzvorrichtung für die Schalteinheit mechanisch abzugreifen und miteinander zu koppeln, wobei das Schloss einen Riegel und zumindest zwei Schieber mit jeweils wenigstens einer Kulissenführung für den Riegel aufweist.According to the invention, the lock and the key are designed to mechanically pick up the switching position of at least one switching unit and the position of a protective device for the switching unit and to couple them with one another, the lock having a bolt and at least two slides each with at least one link guide for the bolt.

Der Riegel kann erfindungsgemäß als Zylinder ausgebildet sein, der mittels des Schlüssels gedreht werden kann. Insbesondere kann der Riegel in beide Kulissenführungen eingreifen, wodurch die beiden Schieber miteinander gekoppelt werden.According to the invention, the bolt can be designed as a cylinder which can be rotated by means of the key. In particular, the bolt can engage in both link guides, as a result of which the two slides are coupled to one another.

Die Schieber können vorzugsweise zum Auslösen unterschiedlicher Funktionen verwendet werden. Insbesondere sind auch mehr als zwei Schieber möglich. So kann das Schloss beispielsweise einen weiteren Schieber umfassen, um eine zusätzliche Funktion auszulösen oder eine weitere Stellung eines Elementes der Schaltanlage abzufragen. Sämtliche Funktionen können aneinander gekoppelt sein.The sliders can preferably be used to trigger different functions. In particular, more than two slides are also possible. For example, the lock can include a further slide in order to trigger an additional function or to query a further position of an element of the switchgear assembly. All functions can be linked to one another.

Erfindungsgemäß wird eine rein mechanische Schlüsselabfrage ermöglicht. Eine störanfällige, elektromagnetische Abfrage ist somit nicht erforderlich. Die Verriegelungsvorrichtung kann auch bei hohen Temperaturen problemlos eingesetzt werden. Auch ist diese kostengünstig und platzsparend. Ferner kann die Verriegelungsvorrichtung auch nachträglich in eine Schaltanlage eingebaut werden.According to the invention, a purely mechanical key query is made possible. Electromagnetic interrogation, which is prone to failure, is therefore not required. The locking device can also be used without problems at high temperatures. This is also inexpensive and space-saving. Furthermore can the locking device can also be retrofitted in a switchgear.

Die Verriegelungsvorrichtung verhindert auf einfache Weise, dass beim Erden einer Schaltanlage ein Kurzschluss auftreten kann.The locking device prevents in a simple manner that a short circuit can occur when a switchgear is grounded.

Weiterbildungen der Erfindung sind auch den abhängigen Ansprüchen, der Beschreibung sowie den beigefügten Zeichnungen zu entnehmen.Further developments of the invention can also be found in the dependent claims, the description and the accompanying drawings.

Eine Schalteinheit in einer Schaltanlage wird als Trennschalter, oder Erdungsschalter, oder Leistungsschalter oder Lasttrennschalter bezeichnet und ausgeführt. Es sind aber auch andere und weitere Varianten für Schalteinheiten vorstellbar. Eine Schaltanlage besteht aus mindestens einer Schalteinheit, in der Regel aber aus mehreren, verschiedenen Schalteinheiten.A switching unit in a switchgear is called a disconnector, or earthing switch, or circuit breaker or switch-disconnector. However, other and further variants for switching units are also conceivable. A switchgear consists of at least one switching unit, but usually of several different switching units.

Gemäß einer Ausführungsform ist einer der Schieber der Schalteinheit und ein anderer Schieber der Schutzvorrichtung zugeordnet. Insbesondere kann eine Wirkverbindung zwischen einem der Schieber und der Schalteinheit sowie einem anderen Schieber und der Schutzvorrichtung bestehen. Vorzugsweise sind der Schieber und die Schalteinheit und/oder der Schieber und die Schutzvorrichtung miteinander verbunden und insbesondere als gemeinsames Bauteil ausgebildet.According to one embodiment, one of the slides is assigned to the switching unit and another slide is assigned to the protective device. In particular, there can be an operative connection between one of the sliders and the switching unit and another slider and the protective device. The slide and the switching unit and / or the slide and the protective device are preferably connected to one another and, in particular, are designed as a common component.

Dadurch, dass die Schieber über den Riegel des Schlosses miteinander gekoppelt sind, sind auch die Schalteinheit und die Schutzvorrichtung miteinander gekoppelt. So kann beispielsweise die Schalteinheit erst dann betätigt werden, wenn die Schutzvorrichtung eine entsprechende Betätigung freigegeben hat. Auf diese Weise wird die Sicherheit beim Umgang mit der Schaltanlage auf einfache und kostengünstige Weise gewährleistet.Because the slides are coupled to one another via the bolt of the lock, the switching unit and the protective device are also coupled to one another. For example, the switching unit can only be actuated when the protective device has released a corresponding actuation. In this way, safety when handling the switchgear is guaranteed in a simple and inexpensive manner.

Erfindungsgemäß umfasst die Schutzvorrichtung einen Verschluss einer Einstecköffnung für eine Betätigungskurbel. Insbesondere umfassen die Schaltstellungen des Trennschalters eine Ein- und eine Aus-Stellung. So kann mittels der Betätigungskurbel der Trennschalter ein- bzw. ausgeschaltet werden.According to the invention, the protective device comprises a closure of an insertion opening for an actuating crank. In particular, the switch positions of the disconnector include an on and an off position. The disconnector can be switched on and off using the operating crank.

Die Positionen der Schutzvorrichtung umfassen insbesondere eine Freigabe- und eine Verschlussposition. So kann der Schieber insbesondere mit dem Verschluss verbunden sein. Auf diese Weise kann durch eine Verschiebung des Schiebers die Einstecköffnung geöffnet oder verschlossen werden. Die Kurbel kann lediglich in der Freigabeposition in die Einstecköffnung eingesteckt werden. In der Verschlussposition ist die Einstecköffnung hingegen geschlossen.The positions of the protective device include, in particular, a release position and a closed position. In particular, the slide can be connected to the closure. In this way, the insertion opening can be opened or closed by moving the slide. The crank can only be inserted into the insertion opening in the release position. In the closed position, however, the insertion opening is closed.

Dadurch wird auf mechanische Weise erreicht, dass die Kurbel nur bei bestimmten Stellungen des Trennschalters eingesteckt werden kann. Umgekehrt wird durch den Schieber der Schutzvorrichtung abgefragt, ob der Trennschalter offen oder geschlossen ist. Der Trennschalter kann wiederum nur dann betätigt werden, wenn sich der Leistungsschalter in der Aus-Stellung befindet.This mechanically ensures that the crank can only be inserted in certain positions of the disconnector. Conversely, the slider of the protective device queries whether the circuit breaker is open or closed. Again, the disconnector can only be operated when the circuit breaker is in the off position.

Gemäß einer weiteren Ausführungsform sind die Schieber parallel zueinander angeordnet. Vorzugsweise umfassen die Schieber jeweils ein zumindest abschnittsweise flaches, insbesondere abgekantetes, Blech. Die Schieber sind insbesondere hintereinander angeordnet, so dass der Riegel in beide Kulissenführungen der Schieber eingreifen kann.According to a further embodiment, the slides are arranged parallel to one another. Preferably, the slides each comprise an at least partially flat, in particular beveled, sheet metal. In particular, the slides are arranged one behind the other so that the bolt can engage in both link guides of the slides.

Nach einer weiteren Ausführungsform sind die Kulissenführungen jeweils als Aussparung im Schieber ausgebildet. Der Riegel kann sich somit durch die erste Kulissenführung bis zur zweiten Kulissenführung hindurch erstrecken. Grundsätzlich ist es jedoch auch möglich, dass die zweite Kulissenführung keine Aussparung aufweist. So ist es auch denkbar, dass die zweite Kulissenführung als separates Bauteil am Schieber angebracht oder aus dem Schiebermaterial selbst geformt ist. Eine Aussparung hat jedoch den Vorteil, dass diese kostengünstig herstellbar ist. Die Aussparung kann beispielsweise aus dem Schieber gefräst oder gelasert sein.According to a further embodiment, the link guides are each designed as a recess in the slide. The bolt can thus extend through the first link guide to the second link guide. In principle, however, it is also possible that the second link guide does not have a recess. So it is also conceivable that the second link guide as separate component attached to the slide or formed from the slide material itself. However, a cutout has the advantage that it can be produced inexpensively. The recess can, for example, be milled or lasered from the slide.

Gemäß einer weiteren Ausführungsform weisen die Kulissenführungen jeweils zumindest einen Schmalbereich und einen Breitbereich auf. Der Breitbereich ist insbesondere breiter als der Schmalbereich. Vorzugsweise kann der Breitbereich unterhalb des Schmalbereichs angeordnet sein.According to a further embodiment, the link guides each have at least one narrow area and one wide area. In particular, the wide area is wider than the narrow area. The wide area can preferably be arranged below the narrow area.

Die jeweiligen Bereiche können insbesondere rechteckig geformt sein. Vorzugsweise kann zwischen den beiden Bereichen ein Übergangsbereich vorgesehen sein. So kann insbesondere zwischen dem Rechteck des Breitbereichs und dem Rechteck des Schmalbereichs zu beiden Seiten eine Schräge vorgesehen sein, um einen sanften Übergang zwischen den Bereichen zu gewährleisten.The respective areas can in particular have a rectangular shape. A transition area can preferably be provided between the two areas. In particular, a bevel can be provided on both sides between the rectangle of the wide area and the rectangle of the narrow area in order to ensure a smooth transition between the areas.

Nach einer weiteren Ausführungsform umfasst der Riegel des Schlosses eine Querseite und eine Längsseite, wobei die Querseite schmaler als die Längsseite ausgebildet ist. Der Riegel kann somit insbesondere einen rechteckigen Querschnitt aufweisen. Es ist jedoch auch möglich, dass der Riegel die Form eines Zylinders mit zumindest zwei abgeflachten Seiten aufweist. Vorzugsweise kann die Form des Riegels an die Form der Kulissenführung angepasst sein.According to a further embodiment, the bolt of the lock comprises a transverse side and a longitudinal side, the transverse side being designed to be narrower than the longitudinal side. The bolt can thus in particular have a rectangular cross section. However, it is also possible that the bolt has the shape of a cylinder with at least two flattened sides. The shape of the bolt can preferably be adapted to the shape of the link guide.

Gemäß einer weiteren Ausführungsform ist die Querseite des Riegels schmaler als der Schmalbereich der Kulissenführung ausgebildet. Die Schieber können somit auch über die Querseite des Riegels bewegt werden, wenn sich der Riegel im Schmalbereich der Kulissenführung befindet.According to a further embodiment, the transverse side of the bolt is designed to be narrower than the narrow area of the link guide. The slide can thus also be moved over the transverse side of the bolt when the bolt is in the narrow area of the link guide.

Nach einer weiteren Ausführungsform ist die Längsseite des Riegels breiter als der Schmalbereich und schmaler als der Breitbereich der Kulissenführung ausgebildet. Der Schieber kann somit insbesondere im Schmalbereich nicht über die Längsseite des Riegels bewegt werden. Eine Bewegung des Schiebers über die Längsseite des Riegels hinweg ist, wenn überhaupt, lediglich im Breitbereich der Kulissenführung möglich.According to a further embodiment, the longitudinal side of the bolt is wider than the narrow area and narrower than the wide area of the link guide. The slide cannot therefore be moved over the long side of the bolt, particularly in the narrow area. A movement of the slide over the long side of the bolt is only possible, if at all, in the wide area of the link guide.

Insbesondere kann der Schlüssel und somit der Riegel zwischen einer waagrechten und einer senkrechten Stellung verstellt werden. Der Schieber kann vorzugsweise nur dann frei bewegt werden, wenn sich der Schlüssel in einer senkrechten Position befindet. In der senkrechten Position erstreckt sich nämlich auch der Riegel in senkrechter Richtung. Somit wirkt in der senkrechten Position des Schlüssels die Querseite des Riegels mit der Kulissenführung zusammen, sodass der Schieber auch im Schmalbereich über den Riegel geschoben werden kann. In der waagrechten Stellung des Schlüssels erstreckt sich der Riegel hingegen in Querrichtung. Somit wirkt die breite Längsseite des Riegels mit der Kulissenführung zusammen. Der Schmalbereich des Schiebers kann bei dieser Stellung nicht über die breite Längsseite des Riegels geschoben werden. Der Schieber kann folglich nicht frei bewegt werden.In particular, the key and thus the bolt can be adjusted between a horizontal and a vertical position. The slide can preferably only be moved freely when the key is in a vertical position. In the vertical position, the bolt also extends in the vertical direction. Thus, in the vertical position of the key, the transverse side of the bolt interacts with the link guide so that the slider can also be pushed over the bolt in the narrow area. In the horizontal position of the key, however, the bolt extends in the transverse direction. Thus, the wide long side of the bolt interacts with the link guide. In this position, the narrow area of the slide cannot be pushed over the wide long side of the bolt. As a result, the slide cannot be moved freely.

Gemäß einer weiteren Ausführungsform sind zwei Schlösser vorgesehen, welche miteinander durch zumindest einen gemeinsamen Schieber, insbesondere durch die beiden Schieber, gekoppelt sind. Der Schlüssel eines Schlosses kann beispielsweise bei ausgeschaltetem Trennschalter für einen Erdungsschalter der Sammelschiene verwendet werden, während der Schlüssel des anderen Schlosses bei ausgeschaltetem Trennschalter für eine weitere Erdung an der Hochspannungsseite verwendet werden kann.According to a further embodiment, two locks are provided which are coupled to one another by at least one common slide, in particular by the two slides. The key of one lock can, for example, be used for an earthing switch of the busbar when the disconnector is switched off, while the key of the other lock can be used for further earthing on the high-voltage side with the disconnector switched off.

Insbesondere kann somit ein Schieber zwei Kulissenführungen aufweisen. Diese können vorzugsweise baugleich ausgebildet sein. Auch können die Kulissenführungen jeweils an derselben Höhenposition am Schieber angeordnet sein.In particular, a slide can thus have two link guides. These can preferably be of identical construction. They can also Link guides each be arranged at the same height position on the slide.

Die Erfindung betrifft auch eine Schaltanlage, insbesondere Mittelspannungsschaltanlage mit einer erfindungsgemäßen Verriegelungsvorrichtung.The invention also relates to a switchgear, in particular a medium-voltage switchgear, with a locking device according to the invention.

Im Folgenden wird die Erfindung anhand der beigefügten Zeichnungen beschrieben. Es zeigen:

Fig. 1A
eine Vorderansicht einer Ausführungsform einer erfindungsgemäßen Schaltanlage,
Fig. 1B
eine Schnittansicht der Schaltanlage gemäß Fig. 1A,
Fig. 1C
eine perspektivische Rückansicht der Schaltanlage gemäß Fig. 1A,
Fig. 2A
eine perspektivische Rückansicht der in Fig. 1C gezeigten Schieber,
Fig. 2B
eine perspektivische Vorderansicht der Schieber gemäß Fig. 2A,
Fig. 3A
eine Perspektivansicht einer Ausführungsform eines Schiebers einer Schalteinheit einer erfindungsgemäßen Schaltanlage,
Fig. 3B
eine Vorderansicht des Schiebers gemäß Fig. 3A,
Fig. 4A
eine Perspektivansicht einer Ausführungsform eines Schiebers einer Schutzvorrichtung einer erfindungsgemäßen Schaltanlage, und
Fig. 4B
eine Vorderansicht des Schiebers gemäß Fig. 4A.
The invention is described below with reference to the accompanying drawings. Show it:
Figure 1A
a front view of an embodiment of a switchgear according to the invention,
Figure 1B
a sectional view of the switchgear according to Figure 1A ,
Figure 1C
a perspective rear view of the switchgear according to Figure 1A ,
Figure 2A
a perspective rear view of the in Figure 1C shown slide,
Figure 2B
a perspective front view of the slide according to Figure 2A ,
Figure 3A
a perspective view of an embodiment of a slide of a switching unit of a switchgear according to the invention,
Figure 3B
a front view of the slide according to Figure 3A ,
Figure 4A
a perspective view of an embodiment of a slide of a protective device of a switchgear according to the invention, and
Figure 4B
a front view of the slide according to Figure 4A .

Zunächst sei darauf hingewiesen, dass die dargestellten Ausführungsformen rein beispielhafter Natur sind. Insbesondere können die Anzahl der Schieber, die Anzahl der Schlösser und Schlüssel sowie die Anzahl der Kulissenführungen beliebig variieren. Auch sind Ausführungsformen denkbar, bei denen lediglich ein Schloss vorgesehen ist. Hierbei weisen die Schieber lediglich jeweils eine Kulissenführung auf.First of all, it should be pointed out that the embodiments shown are purely exemplary in nature. In particular, the number of slides, the number of locks and keys and the number of link guides can vary as desired. Embodiments are also conceivable in which only one lock is provided. Here, the slides each have only one link guide.

Die Schalteinheit kann anstelle eines Trennschalters oder zusätzlich auch Erdungsschalter und/oder Leistungsschalter umfassen. Ferner können mehrere verschiedene Schalteinheiten vorgesehen sein.The switching unit can also comprise an earthing switch and / or circuit breaker instead of or in addition to a disconnector. Furthermore, several different switching units can be provided.

In Fig. 1A ist ein Ausschnitt aus einer Schaltanlage 10 mit einer Verriegelungsvorrichtung dargestellt. Die Verriegelungsvorrichtung umfasst drei Schlösser 12, 12', 12". Die Schlösser 12, 12', 12" sind an einer Blende 16 befestigt.In Figure 1A a section of a switchgear 10 with a locking device is shown. The locking device comprises three locks 12, 12 ', 12 ". The locks 12, 12', 12" are attached to a cover 16.

In das erste und das zweite Schloss 12, 12' ist jeweils ein Schlüssel 14, 14' eingesteckt und einem Schaltgerät, beispielsweise einem Trennschalter zugeordnet, wobei mit einem abgezogenen Schlüssel ein Erdungsschalter betätigt werden kann. Der Schlüssel kann jedoch nur abgezogen werden, wenn sich der Trennschalter in einer Offenstellung befindet. Ferner darf sich keine Kurbel an dem Schaltgerät (Trennschalter) befinden.A key 14, 14 'is inserted in each of the first and second locks 12, 12' and assigned to a switching device, for example an isolating switch, an earthing switch being able to be operated with a removed key. However, the key can only be removed when the circuit breaker is in an open position. Furthermore, there must be no crank on the switchgear (disconnector).

Das Schloss 12" ist einem weiteren Schaltgerät, beispielsweise einem Erdungsschalter zugeordnet, wobei mit einem abgezogenen Schlüssel ein Trennschalter betätigt werden kann. Der Schlüssel kann jedoch nur abgezogen werden, wenn sich der Erdungsschalter in einer Offenstellung befindet. Ferner darf sich keine Kurbel an dem Schaltgerät (Erdungsschalter) befinden.The lock 12 ″ is assigned to a further switching device, for example an earthing switch, a disconnector with a key removed can be operated. However, the key can only be removed when the earthing switch is in an open position. Furthermore, there must be no crank on the switching device (earthing switch).

Der Schlüssel 12 kann unter bestimmten Voraussetzungen abgezogen werden, um für eine Erdung an der Hochspannungsseite verwendet zu werden. Der Schlüssel 12' kann wiederum unter bestimmten Voraussetzungen abgezogen werden, um bei einem Erdungsschalter einer Sammelschiene verwendet zu werden.The key 12 can be withdrawn under certain conditions in order to be used for earthing on the high-voltage side. The key 12 'can in turn be withdrawn under certain conditions in order to be used with an earthing switch of a busbar.

In Fig. 1B ist eine Schnittansicht der Schaltanlage gemäß Fig. 1A gezeigt. Das Schloss 12 umfasst einen Schieber 18 einer Schalteinheit sowie einen Schieber 20 einer Schutzvorrichtung. Die nicht dargestellte Schalteinheit kann beispielsweise einen Trennschalter, einen Erdungsschalter oder einen Leistungsschalter umfassen.In Figure 1B FIG. 3 is a sectional view of the switchgear assembly according to FIG Figure 1A shown. The lock 12 comprises a slide 18 of a switching unit and a slide 20 of a protective device. The switching unit, not shown, can include, for example, an isolating switch, an earthing switch or a circuit breaker.

Die Schutzvorrichtung weist einen Verschluss einer Einstecköffnung für eine Kurbel auf. Somit wird durch den Schieber 20 festgestellt werden, ob eine Einstecköffnung für die Kurbel geöffnet oder geschlossen ist.The protective device has a closure of an insertion opening for a crank. It is thus determined by the slide 20 whether an insertion opening for the crank is open or closed.

In Fig. 1C ist eine rückseitige Perspektivansicht der Schaltanlage gezeigt. Ein Riegel 22 des Schlosses 12 greift durch die Schieber 18, 20 hindurch. Die Schlösser 12, 12' sind auf diese Weise über die Schieber 18, 20 miteinander gekoppelt. Auch sind die beiden Schieber 18, 20 über den Riegel 22 miteinander gekoppelt. Das Schloss 12" ist hingegen nicht über die Schieber 18, 20 mit den anderen Schlössern 12, 12' verbunden.In Figure 1C a rear perspective view of the switchgear is shown. A bolt 22 of the lock 12 engages through the slides 18, 20. The locks 12, 12 ′ are coupled to one another in this way via the slides 18, 20. The two slides 18, 20 are also coupled to one another via the bolt 22. The lock 12 ″, on the other hand, is not connected to the other locks 12, 12 ′ via the slides 18, 20.

Die Schieber 18, 20 sind im Detail in Fig. 2A und Fig. 2B dargestellt. Diese umfassen jeweils zwei Kulissenführungen 24 für die Riegel 22. Die Kulissenführungen 24 weisen in einem oberen Abschnitt einen Schmalbereich 26 und in einem unteren Abschnitt einen Breitbereich 28 auf.The slides 18, 20 are shown in detail in Figures 2A and 2B shown. These each include two link guides 24 for the bolt 22. The link guides 24 have a narrow area 26 in an upper section and a wide area 28 in a lower section.

Der Riegel 22 besitzt ebenfalls eine schmale Querseite 30 sowie eine breite Längsseite 32. Die Schieber 18, 20 können im Schmalbereich 26 nur dann über den Riegel 22 bewegt werden, wenn diese in einer senkrechten Position angeordnet ist, da die Querseite 30 schmaler als der Schmalbereich 26 ist. Der Riegel 22 kann einen rechteckigen Querschnitt aufweisen. Alternativ ist es auch möglich, dass zumindest zwei Seiten konvex gekrümmt sind.The bolt 22 also has a narrow transverse side 30 and a wide longitudinal side 32. The slides 18, 20 can only be moved in the narrow area 26 over the bolt 22 if this is arranged in a vertical position, since the transverse side 30 is narrower than the narrow area 26 is. The latch 22 can have a rectangular cross section. Alternatively, it is also possible for at least two sides to be convexly curved.

In einer waagrechten Stellung des Riegels 22 können die Schieber 18, 20 nicht verschoben werden, da die Längsseite 32 breiter als der Schmalbereich 26 ist.In a horizontal position of the bolt 22, the slides 18, 20 cannot be moved since the longitudinal side 32 is wider than the narrow area 26.

Mithilfe der Schlüssel 14, 14' kann auch ein Mikroschalter 34 ein- bzw. ausgeschaltet werden, der zusätzliche Stellungsinformationen übermittelt.A microswitch 34, which transmits additional position information, can also be switched on or off with the aid of the keys 14, 14 '.

Wie in den Figuren 2A und 2B gezeigt ist, sind die Schieber 18, 20 mit der Schaltanlage 10 verbunden. Durch die Formgebung der Kulissenführungen 24 können die entsprechenden Stellungen der Schlüssel 14, 14' abgefragt werden.As in the Figures 2A and 2B is shown, the slides 18, 20 are connected to the switchgear 10. Due to the shape of the link guides 24, the corresponding positions of the keys 14, 14 'can be queried.

Bei einer senkrechten Stellung des Riegels 22 kann der Schieber 18 der Schalteinheit vollständig nach unten verschoben werden. Der Schlüssel 14 ist in dieser Position nicht abziehbar. Der Schieber 20 der Schutzvorrichtung ist ebenfalls verschiebbar.When the bolt 22 is in a vertical position, the slide 18 of the switching unit can be moved completely downwards. The key 14 cannot be removed in this position. The slide 20 of the protective device is also displaceable.

Befindet sich der Schieber 18 der Schalteinheit in seiner oberen Position, so kann der der Riegel 22 in seine waagrechte Stellung gebracht werden. Der Trennschalter ist in diesem Fall in seiner Offenstellung und der Schlüssel 14 ist abziehbar. Ist der Schlüssel 14 abgezogen, so kann der Trennschalter nicht eingeschaltet werden, da die Einstecköffnung für die Betätigungskurbel des Trennschalters durch einen mit dem Schieber 20 gekoppelten Verschluss blockiert ist. Ein Benutzer wird auf diese Weise geschützt.If the slide 18 of the switching unit is in its upper position, the bolt 22 can be brought into its horizontal position. In this case, the isolating switch is in its open position and the key 14 can be removed. If the key 14 is removed, the isolating switch cannot be switched on, since the insertion opening for the actuating crank of the isolating switch is blocked by a lock coupled to the slide 20. A user is protected in this way.

Eine Trennung erfolgt nach folgendem Ablauf:
Bei der waagrechten Schlüsselstellung kann der Schlüssel 14 abgezogen werden. Der Trennantrieb ist aus, der Schieber 18 der Schalteinheit ist oben und blockiert. Auch der Schieber 20 der Schutzvorrichtung ist blockiert und kann nicht nach unten bewegt werden.
A separation takes place according to the following sequence:
When the key is in the horizontal position, the key 14 can be withdrawn. The separating drive is off, the slide 18 of the switching unit is up and blocked. The slide 20 of the protective device is also blocked and cannot be moved downwards.

Wird der Schlüssel 14 nun gedreht, befindet sich der Riegel 22 in einer senkrechten Stellung. Der Schlüssel 14 steckt im Schloss 12, ist zwar noch drehbar aber nicht mehr abziehbar. Der Trennantrieb ist nach wie vor aus. Jedoch ist der Schieber 18 der Schalteinheit nicht mehr blockiert. Der Schieber 18 befindet sich oben. Der Schieber 20 der Schutzvorrichtung kann nun bei Einstecken einer Kurbel zum Betätigen des Trennschalters verschoben werden, indem der Verschluss manuell geöffnet wird. Wird dabei der Schieber 20 der Schutzvorrichtung nach unten geschoben, so ist der Schlüssel 14 nicht mehr drehbar. Der Trennantrieb kann daraufhin eingeschaltet werden, wodurch der Schieber 18 der Schalteinheit nach unten bewegt wird.If the key 14 is now turned, the bolt 22 is in a vertical position. The key 14 is in the lock 12, although it can still be rotated, it can no longer be removed. The separation drive is still off. However, the slide 18 of the switching unit is no longer blocked. The slide 18 is at the top. The slide 20 of the protective device can now be moved when inserting a crank to operate the isolating switch by opening the lock manually. If the slide 20 of the protective device is pushed down, the key 14 can no longer be rotated. The separating drive can then be switched on, as a result of which the slide 18 of the switching unit is moved downwards.

In diesem Zustand sind somit die Schlüssel 14, 14' nicht drehbar und auch nicht abziehbar. Der Erdungsschalter kann folglich nicht betätigt werden. Auch muss zum Betätigen des Erdungsschalters zunächst die Kurbel entfernt werden. Bei entnommener Kurbel verschiebt sich der Schieber 20 der Schutzvorrichtung wieder beim Schließen des Verschlusses, der die Kurbelöffnung verschließt.In this state, the keys 14, 14 'cannot be rotated and cannot be removed. As a result, the earthing switch cannot be operated. In order to operate the earthing switch, the crank must first be removed. When the crank is removed, the slide 20 of the protective device moves again when the lock that closes the crank opening is closed.

In den Figuren 3A bis 4B sind Detailansichten der Schieber 18 bzw. 20 dargestellt. Jeder der Schieber 18, 20 weist zwei Kulissenführungen 24 auf. Diese haben jeweils einen Schmalbereich 26 und einen Breitbereich 28. Diese Bereiche 26, 28 sind im Wesentlichen rechteckförmig ausgebildet. In einem Übergangsbereich kann sich der Breitbereich 28 auf die Breite des Schmalbereichs 26 verjüngen.In the Figures 3A to 4B detailed views of the slide 18 and 20 are shown. Each of the slides 18, 20 has two link guides 24. These each have a narrow area 26 and a wide area 28. These areas 26, 28 are essentially rectangular. In a transition area, the wide area 28 can taper to the width of the narrow area 26.

Erfindungsgemäß wird durch die Schieber 18, 20 eine mechanische Schlüsselabfrage gewährleistet. Das Auftreten künstlicher Kurzschlüsse kann verhindert werden, ohne dass eine elektromagnetische Abfrage der Stellung der Schalter erforderlich ist.According to the invention, a mechanical key query is ensured by the slide 18, 20. The occurrence of artificial short circuits can be prevented without an electromagnetic query of the position of the switches being necessary.

BezugszeichenlisteList of reference symbols

1010
SchaltanlageSwitchgear
12, 12', 12"12, 12 ', 12 "
Schlosslock
14, 14'14, 14 '
Schlüsselkey
1616
Blendecover
1818th
Schieber der SchalteinheitSwitch unit slide
2020th
Schieber der SchutzvorrichtungGuard slide
2222nd
Riegelbars
2424
KulissenführungScenery tour
2626th
SchmalbereichNarrow area
2828
BreitbereichWide range
3030th
QuerseiteTransverse side
3232
LängsseiteLong side
3434
MikroschalterMicroswitch

Claims (10)

  1. A locking apparatus for a switchgear (10), in particular a medium-voltage switchgear, said locking apparatus comprising
    at least one lock (12, 12', 12") and one key (14, 14'), which are configured to mechanically tap the switching position of at least one switching unit and the position of a protection device for the switching unit and to couple them to one another, wherein the lock (12, 12', 12") has a latch (22) and at least two sliders (18, 20) which each have at least one slot guide (24) for the latch (22), and wherein the protection device comprises a closure of an insertion opening for a crank.
  2. A locking apparatus in accordance with claim 1,
    characterized in that
    one of the sliders (18) is associated with the switching unit and another slider (20) is associated with the protection device.
  3. A locking apparatus in accordance with one of the preceding claims,
    characterized in that
    the sliders (18, 20) are arranged in parallel with one another.
  4. A locking apparatus in accordance with any one of the preceding claims,
    characterized in that
    the slot guides (24) are each formed as a recess in the slider (18, 20).
  5. A locking apparatus in accordance with any one of the preceding claims,
    characterized in that
    the slot guides (24) each have at least one narrow region (26) and one wide region (28).
  6. A locking apparatus in accordance with any one of the preceding claims,
    characterized in that
    the latch (22) of the lock (12, 12', 12") comprises a transverse side (30) and a longitudinal side (32), with the transverse side (30) being narrower than the longitudinal side (32).
  7. A locking apparatus in accordance with claim 6,
    characterized in that
    the transverse side (30) of the latch (22) is narrower than the narrow region (26) of the slot guide (24).
  8. A locking apparatus in accordance with claim 6 or claim 7,
    characterized in that
    the longitudinal side (32) of the latch (22) is wider than the narrow region (26) and narrower than the wide region (28) of the slot guide (24).
  9. A locking apparatus in accordance with any one of the preceding claims,
    characterized in that
    two locks (12, 12') are provided which are coupled to one another by at least one common slider (18, 20), in particular by the two sliders (18, 20).
  10. A switchgear (10), in particular a medium-voltage switchgear, comprising a locking apparatus in accordance with at least one of the preceding claims.
EP16305634.4A 2015-06-25 2016-06-01 Locking device Active EP3109882B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015110216.1A DE102015110216A1 (en) 2015-06-25 2015-06-25 locking device

Publications (2)

Publication Number Publication Date
EP3109882A1 EP3109882A1 (en) 2016-12-28
EP3109882B1 true EP3109882B1 (en) 2021-07-21

Family

ID=56117657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16305634.4A Active EP3109882B1 (en) 2015-06-25 2016-06-01 Locking device

Country Status (2)

Country Link
EP (1) EP3109882B1 (en)
DE (1) DE102015110216A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1365484A (en) * 1963-05-22 1964-07-03 Merlin Gerin Locking device for an installation with two disconnectors
DE1276174B (en) * 1965-02-20 1968-08-29 Continental Elektro Ind Ag Device for mechanical interlocking of circuit breakers and disconnectors in systems with more than two busbars
FR2826501B1 (en) * 2001-06-20 2003-08-15 Alstom DISCONNECTOR CONTROL HAVING AN INTERLOCKING LOGIC IMPLANTED IN A REMOVABLE ROTARY PART
EP1933345B1 (en) * 2006-12-15 2011-10-26 ABB Technology AG Interlock- and operation-mechanism for an automatic generator trip switch
EP1944780B1 (en) * 2006-12-29 2015-04-08 LS Industrial Systems Co., Ltd Key lock device for circuit breaker
DE102007037066B4 (en) * 2007-08-03 2023-01-26 Siemens Aktiengesellschaft Coupling arrangement for transmitting the rotational movement of a switching shaft of an electrical switch to at least one position indicator
FR2989216B1 (en) * 2012-04-10 2015-02-20 Schneider Electric Ind Sas DEVICE FOR CONTROLLING A MEDIUM VOLTAGE ELECTRICAL EQUIPMENT AND APPARATUS CONTROLLED THEREBY

Also Published As

Publication number Publication date
EP3109882A1 (en) 2016-12-28
DE102015110216A1 (en) 2017-01-12

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