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EP2434520A1 - Multi-pole electric switching device - Google Patents

Multi-pole electric switching device Download PDF

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Publication number
EP2434520A1
EP2434520A1 EP11181113A EP11181113A EP2434520A1 EP 2434520 A1 EP2434520 A1 EP 2434520A1 EP 11181113 A EP11181113 A EP 11181113A EP 11181113 A EP11181113 A EP 11181113A EP 2434520 A1 EP2434520 A1 EP 2434520A1
Authority
EP
European Patent Office
Prior art keywords
switching
pole
housing
switching device
pair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11181113A
Other languages
German (de)
French (fr)
Other versions
EP2434520B1 (en
Inventor
Torsten Ahlert
Jörg-Uwe DAHL
Ludvik Godesa
Milos Petracek
Marc Liebetruth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2434520A1 publication Critical patent/EP2434520A1/en
Application granted granted Critical
Publication of EP2434520B1 publication Critical patent/EP2434520B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0214—Housing or casing lateral walls containing guiding grooves or special mounting facilities
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0235—Contacts and the arc extinguishing space inside individual separate cases, which are positioned inside the housing of the circuit breaker

Definitions

  • the invention relates to the structural design of a multi-pole electrical switching device.
  • Electrical switching devices such as low-voltage circuit breakers in the form of so-called compact switch - known as MCCB's (Molded Case Circuit Breaker) - or in the form of so-called open circuit breaker - known as ACB's (for Air cicuit breaker), serve to interrupt single or multi-phase current paths of a main circuit , The interruption of the current paths takes place by mechanical opening single or double interrupting switching contacts. The switching contacts must be arranged electrically isolated.
  • these insulating sheaths consist essentially of a housing base part chambered according to the number of switching poles and an adequate housing upper part, which are usually joined together by screw connections.
  • a multi-pole electrical switching device in the form of a multi-pole low-voltage circuit breaker is known in which a plurality of separate switching pole housing are accommodated between side walls of the outer housing in a housing designated as cover.
  • each of the switching pole housing forms an insulating sheath of a switching room for receiving a single switching pole of the electrical switching device.
  • the switching pole housings which are each formed from two half-shells, insulating channels, which extend with respect to a dividing the half-shells dividing line across the switching pole housing.
  • the connection of the separate switching pole housing of the switching poles takes place via clamping and cross-connecting elements which extend through the insulating channels.
  • a multi-pole electrical switching device with a surrounding housing in which at least two separate switching pole housings are accommodated which each form an insulating enclosure of a switching space for receiving a single switching pole, in which the at least two separate switching pole housings each have at least one receptacle on walls facing each other, forming a receiving pair, wherein for the mechanical connection of the at least two separate switching pole housing the receiving pair is associated with a connecting means which engages in the two receptacles forming the pair of receptacles (German translation DE 602 11 028 T2 the European patent specification EP 1 464 063 B1 ),
  • the invention is also based on the object to provide a safe with respect to the forces acting when switching the Wegpolgeophuse connection and thereby avoid complicated assembly operations.
  • this object is now achieved in that on the one hand, the two recordings forming the recording pair in relation to a dividing gap formed between the two facing walls each form an undercut, wherein the connecting means engages behind the undercuts, and that on the other hand the connecting means in one Forming process is integrally formed on the surrounding housing.
  • the adjacent switching pole housing after mounting by the undercuts of the recordings engaging behind Connecting means across the dividing joint firmly connected.
  • the joining of the separate switching pole housing takes place in a manner which is easy to handle in terms of assembly technology, in which at the same time components are saved.
  • the assembly operations are simplified in that, starting from a front side of the electrical switching device, the mounting takes place parallel to the mutually facing walls of the switching pole housing in a preferred mounting direction.
  • the connecting means are integrated by introducing a corresponding contour in a tool used for the production of the Umgeophuses with the production of the Umgephaseuses directly into this enclosure. It therefore eliminates in particular the need to keep separate fastener sets with connecting means of different lengths for different numbers of the switching pole housing to be connected ready, as in the case of the DE 602 11 028 T2 known switch is the case.
  • the surrounding housing forms at least one first stop extending transversely to the dividing joint - but preferably additionally also a second stop running transversely to the dividing joint - for the receiving pair.
  • this switching device switching elements in the form of switching contacts 2, 3 and 4, 5 for double interruption of a first current path 6 of a first switching pole 7.
  • the current path 6 is part of a first main current path of a power distribution network, in particular a low-voltage network.
  • the switching contacts 2, 3 is a first and the switching contacts 4, 5 associated with a second arc extinguishing member, wherein the arc extinguishing members are formed as splitter plate packages 8, 9.
  • the electrical switching device 1 has a limited by a first switching pole housing 10 first switching space 11 for receiving the switching contacts 2, 3; 4, 5 of the first switching pole 7.
  • Drive links which form a drive mechanism 12 of the electrical switching device, serve to open and close the switching contacts 2, 3; 4, 5.
  • the electrical switching device has a shut-off mechanism 13 in the form of a switching mechanism.
  • the switching mechanism is arranged as a mechanical intermediate member between the switching and drive members in the course of the drive mechanism 12.
  • triggering members are provided, the triggering of the shut-off mechanism 13 - ie a release of a latching of the switching mechanism - cause the drive mechanism 12 to open the switching contacts 2, 3; 4, 5 in motion.
  • a thermal release 14 (as an overload detection member), an electromagnetic release 15 (as a short-circuit detection member), and a manual release 16 protruding from a front insulating cover are provided as the triggering members, by means of which the switching mechanism can be released to open the switching contacts.
  • a pressure release (as a short-circuit detection member) or an electronic
  • Trigger (as overload and / or short-circuit detection member) are provided.
  • the electrical switching device 1 has parallel to the in the FIG. 1 shown first switching room 11 more switching rooms on.
  • the other switching rooms are each limited by further separate switching pole housing.
  • switching contacts further switching poles are arranged.
  • the ends of the current path 6 of each of the switching poles 7 are each electrically connected to at least one electrical line 18 of the respective main current path of the power distribution network.
  • the separate switching pole housings 10 are arranged between a first part 21 designed as a bottom and a second part 22 of a surrounding housing 20 designed as an intermediate cover.
  • the multi-pole electrical switching device 1 designed as a three-pole low-voltage circuit breaker in the form of a compact switch in "cassette construction". So he has three separate switching pole housing 10, which designated as a whole with 25 Connecting devices are interconnected. Each of the three switching pole housing 10 consists of two half-shells 26, 27 and forms an insulating sheath of one of the switching chambers 11 (see. FIG. 1 ), in each of which one of the three switching poles is arranged.
  • the separate switching pole housing 10 on its mutually facing walls laterally projecting hook-like projections 28a, 28b, 29a, 29b, 30a, 30b, 31a 31b.
  • Two each of the hook-like projections 28a, 28b; 29a, 29b; 30a, 30b and 31a, 31b form a receptacle 28; 29; 30; 31, each forming an undercut with respect to a dividing joint 32 formed between the two facing walls.
  • the receptacles 28 and 29 and 30 and 31 adjacent the switching pole housing 10 are opposite each other as receiving pairs.
  • each receiving pair is associated with an integrally formed as a contour element in a primary molding process at the bottom of the surrounding housing connecting means 33.
  • the connecting means 33 engages behind the undercuts of the receptacles 28 and 29 or 30 and 31 of the associated receiving pair.
  • the connecting means 33 in this case have a cross section which is shaped in the manner of a double dovetail. They extend in a pin-like manner in the region of the dividing lines 32 parallel to the dividing joints 32. Accordingly, each of the receptacles each forms a corresponding groove with a dovetail-shaped cross-sectional shape extending parallel to the dividing joints 32.
  • the switching pole housing 10 forms the bottom formed first part 21 of the housing for each of the receiving pairs each one transverse to the dividing lines 32 extending first stop 34; 35 (cf. FIGS. 3 to 5 ) and formed as an intermediate cover second part 22 of the surrounding housing forms for each of the receiving pairs each have a transverse to the dividing lines 32 extending second stop 36; 37 (cf. FIG. 2 ).
  • the stops are designed so that the receptacles (28, 29, 30, 31) of the receiving pairs with their transverse to the dividing joint end faces after assembly between their associated first (34, 35) and second (36, 37) Stops are held stationary to the housing.
  • the connecting means 25 are not made of separate items, but they are integrated into the already existing components of the electrical switching device.
  • the assembly of the multi-pole electrical switching device according to the invention can be carried out in a preferred mounting direction. A cross connection through the switching rooms is not required and the associated insulation problems eliminated.

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Abstract

The device (1) has a connection unit (33) for mechanically connecting two separate switching pole housings (10) to a support pair and engaged in supports (28-31) forming the support pair. The supports form an undercut with respect to a dividing joint (32) that is formed between walls, which are faced together. The connection unit grips the undercut, and is individually formed at an outer housing according to a molding process. The outer housing forms a stopper for the support pair, where the stopper runs transverse to the dividing joint.

Description

Die Erfindung betrifft die konstruktive Gestaltung eines mehrpoligen elektrischen Schaltgerätes.The invention relates to the structural design of a multi-pole electrical switching device.

Elektrische Schaltgeräte, beispielsweise Niederspannungs-Leistungsschalter in Form sogenannter Kompaktschalter - bekannt als MCCB's (für Molded Case Circuit Breaker) - oder in Form sogenannter offener Leistungsschalter - bekannt als ACB's (für Air cicuit breaker), dienen zum Unterbrechen ein- oder mehrphasiger Strompfade eines Hauptstromkreises. Das Unterbrechen der Strompfade erfolgt dabei durch mechanisches Öffnen einfach oder doppelt unterbrechender Schaltkontakte. Dabei müssen die Schaltkontakte elektrisch isoliert angeordnet werden.Electrical switching devices, such as low-voltage circuit breakers in the form of so-called compact switch - known as MCCB's (Molded Case Circuit Breaker) - or in the form of so-called open circuit breaker - known as ACB's (for Air cicuit breaker), serve to interrupt single or multi-phase current paths of a main circuit , The interruption of the current paths takes place by mechanical opening single or double interrupting switching contacts. The switching contacts must be arranged electrically isolated.

Diese Isolation muss sowohl gegen das Montageumfeld als auch - bei mehrphasigen elektrischen Schaltgeräten -zwischen den einzelnen Phasen des Hauptstromkreises erfolgen. Um das zu erreichen, werden die Teile des elektrischen Schaltgerätes, die einer solchen Phase des Hauptstromkreises zugeordnet sind und einen Schaltpol bilden, jeweils in einem separaten Schaltraum montiert, der von einer isolierenden Umhüllung begrenzt ist. Diese - insbesondere aus Kunststoff bestehenden - isolierenden Umhüllungen, zu denen auch eine Fülle sich in ihrer äußeren Erscheinungsform unterscheidender starrer Gehäuse-Anordnungen zählen, verhindern zugleich die ungehemmte Ausbreitung der bei Schaltvorgängen entstehenden Gas- und Partikelfreisetzungen.This insulation must be applied both to the installation environment and - in the case of polyphase electrical switchgear - between the individual phases of the main circuit. To achieve this, the parts of the electrical switching device, which are assigned to such a phase of the main circuit and form a switching pole, each mounted in a separate switch room, which is bounded by an insulating sheath. These - in particular made of plastic - insulating sheaths, which also include a wealth of their outer appearance distinctive rigid housing arrangements, at the same time prevent the unrestrained spread of gas and particle releases resulting from switching operations.

So bestehen diese isolierenden Umhüllungen beispielsweise bei einer bekannten Gehäuse-Anordnungen im Wesentlichen aus einem entsprechend der Anzahl der Schaltpole gekammerten GehäuseUnterteil und einem adäquaten Gehäuse-Oberteil, die in der Regel über Schraubverbindungen zusammengefügt werden.For example, in a known housing arrangement, these insulating sheaths consist essentially of a housing base part chambered according to the number of switching poles and an adequate housing upper part, which are usually joined together by screw connections.

Mit der Anwendung rotatorischer Doppelkontakte (Kontaktbrücken) etablierte sich ein anderes als "Kassettenbauweise" bekanntes Gehäusekonzept, bei dem eine schaltbare, doppelt unterbrechende Kontaktbrücke zusammen mit zwei Lichtbogenlöschkammern und eventuell noch anderen pro Schaltpol benötigten Bauteilen (Slotmotor, etc.) in einem nahezu geschlossenen, meist aus mindestens zwei Halbschalen bestehenden Schaltpolgehäuse (Einzelpolkassetten) angeordnet werden. Diese vorgefertigten Einzelpolkassetten müssen nun zu Schaltgeräten mit jeweils benötigter Polzahl kombiniert werden. Dabei sollen die Modularität und damit beispielsweise auch die Austauschbarkeit einzelner der Schalpole erhalten bleiben.With the use of rotary double contacts (contact bridges) established another known as "cassette construction" housing concept in which a switchable, double interrupting contact bridge together with two arc extinguishing chambers and possibly other required per switching pole components (slot motor, etc.) in a nearly closed, usually consisting of at least two half shells Schaltpolgehäuse (Einzelpolkassetten) are arranged. These prefabricated single-pole cassettes must now be combined to switchgear with each required number of poles. In this case, the modularity and thus, for example, the interchangeability of individual of the switching poles are to be maintained.

Außerdem soll diese Kombination der Schaltpolgehäuse (Einzelpolkassetten) unter Gewährleistung einer maximalen Stabilität erfolgen, denn da zwischen den einzelnen Schaltpolen elektrischer Schaltgeräte bei Schalthandlungen (insbesondere bei Abschaltungen im Grenzleistungsbereich der Schaltgeräte) starke Kräfte infolge der die einzelnen Phasen des Strompfades umgebenden Magnetfelder entstehen, ergibt sich die Notwendigkeit, eine Relativbewegung der Einzelpolkassetten zueinander als Folge der wirkenden Kräfte so weit als möglich einzuschränken.In addition, this combination of Schaltpolgehäuse (Einzelpolkassetten) to ensure maximum stability, because there are strong forces due to the surrounding the individual phases of the current path between the individual switching poles of electrical switching devices in switching operations (especially in shutdowns in the limit power range of the switching devices) arises the need to limit as far as possible a relative movement of the Einzelpolkassetten each other as a result of the forces acting.

Aus der deutschen Übersetzung DE 602 11 028 T2 der europäischen Patentschrift EP 1 464 063 B1 ist beispielsweise ein mehrpoliges elektrisches Schaltgerät in Form eines mehrpoligen Niederspannungsschutzschalters bekannt, bei dem in einem als Abdeckung bezeichneten Umgehäuse mehrere separate Schaltpolgehäuse zwischen Seitenwänden des Umgehäuses aufgenommen sind. Bei diesem bekannten mehrpoligen elektrischen Schaltgerät bildet jedes der Schaltpolgehäuse eine isolierende Umhüllung eines Schaltraumes zur Aufnahme eines einzelnen Schaltpoles des elektrischen Schaltgerätes. Um eine hinsichtlich der beim Schalten wirkenden Kräfte sichere Verbindung der Schaltpolgehäuse bereitzustellen und dabei komplizierte Zusammenfügungsoperationen zu vermeiden, weisen die Schaltpolgehäuse, die jeweils aus zwei Halbschalen gebildet sind, isolierende Kanäle auf, welche sich mit Bezug auf eine die Halbschalen trennende Teilungsfuge quer durch die Schaltpolgehäuse erstrecken. Die Verbindung der separaten Schaltpolgehäuse der Schaltpole erfolgt dabei über Spann- und Querverbindungselemente, die sich durch die isolierenden Kanäle hindurch erstrecken.From the German translation DE 602 11 028 T2 the European patent specification EP 1 464 063 B1 For example, a multi-pole electrical switching device in the form of a multi-pole low-voltage circuit breaker is known in which a plurality of separate switching pole housing are accommodated between side walls of the outer housing in a housing designated as cover. In this known multi-pole electrical switching device, each of the switching pole housing forms an insulating sheath of a switching room for receiving a single switching pole of the electrical switching device. In order to provide a safe connection of the switching pole housing with respect to the forces acting on the switching and thereby complicated assembly operations To avoid, the switching pole housings, which are each formed from two half-shells, insulating channels, which extend with respect to a dividing the half-shells dividing line across the switching pole housing. The connection of the separate switching pole housing of the switching poles takes place via clamping and cross-connecting elements which extend through the insulating channels.

Ausgehend von einem mehrpoligen elektrischen Schaltgerät mit einem Umgehäuse, in dem zumindest zwei separate Schaltpolgehäuse aufgenommen sind, die jeweils eine isolierende Umhüllung eines Schaltraumes zur Aufnahme eines einzelnen Schaltpoles bilden, bei dem die zumindest zwei separaten Schaltpolgehäuse an einander zugewandten Wänden jeweils zumindest eine Aufnahme aufweisen, die ein Aufnahme-Paar bilden, wobei zur mechanischen Verbindung der zumindest zwei separaten Schaltpolgehäuse dem Aufnahme-Paar ein Verbindungsmittel zugeordnet ist, das in die beiden das Aufnahme-Paar bildenden Aufnahmen eingreift (deutschen Übersetzung DE 602 11 028 T2 der europäischen Patentschrift EP 1 464 063 B1 ), liegt auch der Erfindung die Aufgabe zu Grunde, eine hinsichtlich der beim Schalten wirkenden Kräfte sichere Verbindung der Schaltpolgehäuse zu schaffen und dabei komplizierte Zusammenfügungsoperationen zu vermeiden.Starting from a multi-pole electrical switching device with a surrounding housing in which at least two separate switching pole housings are accommodated which each form an insulating enclosure of a switching space for receiving a single switching pole, in which the at least two separate switching pole housings each have at least one receptacle on walls facing each other, forming a receiving pair, wherein for the mechanical connection of the at least two separate switching pole housing the receiving pair is associated with a connecting means which engages in the two receptacles forming the pair of receptacles (German translation DE 602 11 028 T2 the European patent specification EP 1 464 063 B1 ), The invention is also based on the object to provide a safe with respect to the forces acting when switching the Schaltpolgehäuse connection and thereby avoid complicated assembly operations.

Erfindungsgemäß wird diese Aufgabe nunmehr dadurch gelöst, dass zum Einen die beiden das Aufnahme-Paar bildenden Aufnahmen in Bezug eine zwischen den beiden einander zugewandten Wänden gebildete Teilungsfuge jeweils einen Hinterschnitt bilden, wobei das Verbindungsmittel die Hinterschnitte hintergreift, und dass zum Anderen das Verbindungsmittel in einem Urformverfahren einstückig am Umgehäuse angeformt ist.According to the invention, this object is now achieved in that on the one hand, the two recordings forming the recording pair in relation to a dividing gap formed between the two facing walls each form an undercut, wherein the connecting means engages behind the undercuts, and that on the other hand the connecting means in one Forming process is integrally formed on the surrounding housing.

Bei dem erfindungsgemäßen mehrpoligen elektrischen Schalter sind also die benachbarten Schaltpolgehäuse nach der Montage durch das die Hinterschnitte der Aufnahmen hintergreifende Verbindungsmittel quer zur Teilungsfuge fest miteinander verbunden.In the multi-pole electrical switch according to the invention, therefore, the adjacent switching pole housing after mounting by the undercuts of the recordings engaging behind Connecting means across the dividing joint firmly connected.

Dabei erfolgt das Zusammenfügen der separaten Schaltpolgehäuse in vorteilhafter montagetechnisch leicht zu handhabender Weise, bei der zugleich Bauteile eingespart werden. Zum Einen sind die Zusammenfügungsoperationen dadurch vereinfacht, dass die Montage ausgehend von einer Frontseite des elektrischen Schaltgerätes parallel zu den einander zugewandten Wänden der Schaltpolgehäuse in bevorzugter Montagerichtung erfolgt. Zum Anderen sind die Verbindungsmittel durch Einbringen einer entsprechenden Kontur in ein zur Herstellung des Umgehäuses verwendetes Werkzeug mit der Herstellung des Umgehäuses direkt in dieses Umgehäuse integriert. Es entfällt hier also insbesondere die Notwendigkeit, separate Verbindungsmittel-Sätze mit Verbindungsmitteln unterschiedlicher Länge für unterschiedliche Anzahlen der zu verbindenden Schaltpolgehäuse bereit zu halten, so wie dies bei dem aus der DE 602 11 028 T2 bekannten Schalter der Fall ist.In this case, the joining of the separate switching pole housing takes place in a manner which is easy to handle in terms of assembly technology, in which at the same time components are saved. On the one hand, the assembly operations are simplified in that, starting from a front side of the electrical switching device, the mounting takes place parallel to the mutually facing walls of the switching pole housing in a preferred mounting direction. On the other hand, the connecting means are integrated by introducing a corresponding contour in a tool used for the production of the Umgehäuses with the production of the Umgehäuses directly into this enclosure. It therefore eliminates in particular the need to keep separate fastener sets with connecting means of different lengths for different numbers of the switching pole housing to be connected ready, as in the case of the DE 602 11 028 T2 known switch is the case.

In bevorzugter Ausgestaltung ist bei dem erfindungsgemäßen elektrischen Schaltgerät vorgesehen, dass das Umgehäuse zumindest einen quer zu der Teilungsfuge verlaufenden ersten Anschlag - vorzugsweise jedoch zusätzlich auch noch einen quer zu der Teilungsfuge verlaufenden zweiten Anschlag - für das Aufnahme-Paar bildet. Bei einer derartigen Ausgestaltung sind das Aufnahme-Paar und damit die Schaltpolgehäuse, die das Aufnahme-Paar bilden, nämlich nach der Montage des Schaltgerätes in der bevorzugten Montagerichtung zwischen den beiden Anschlägen in dem Umgehäuse fest fixiert.In a preferred embodiment, it is provided in the electrical switching device according to the invention that the surrounding housing forms at least one first stop extending transversely to the dividing joint - but preferably additionally also a second stop running transversely to the dividing joint - for the receiving pair. In such an embodiment, the receiving pair and thus the switching pole housing, which form the receptacle pair, namely firmly fixed after assembly of the switching device in the preferred mounting direction between the two stops in the surrounding housing.

Ein erfindungsgemäßes mehrpoliges elektrisches Schaltgerät ist in den Figuren 1 bis 5 dargestellt. Dabei zeigen:

  • Figur 1 eine schematische Darstellung des erfindungsgemäßen elektrischen Schaltgerätes im Schnitt durch eines seiner in einem Umgehäuse angeordneten, separaten Schaltpolgehäuse,
  • Figur 2 ein erstes Teil des Umgehäuses mit den darin angeordneten separaten Schaltpolgehäusen mit Blick auf Verbindungseinrichtungen, die jeweils benachbarte der Schaltpolgehäuse verbinden,
  • Figur 3 eine Seitenansicht eines der separaten Schaltpolgehäuse und
  • Figuren 4 und 5 einen Ausschnitt des in Figur 2 gezeigten ersten Teils des Umgehäuses in perspektivischer Darstellung vor und nach dem Einsetzen eines der separaten Schaltpolgehäuse.
An inventive multi-pole electrical switching device is in the FIGS. 1 to 5 shown. Showing:
  • FIG. 1 a schematic representation of the electrical switching device according to the invention in section through one of its arranged in a surrounding housing, separate switching pole housing,
  • FIG. 2 a first part of the surrounding housing with the separate switching pole housings disposed therein, with a view of connecting devices which respectively connect adjacent ones of the switching pole housings,
  • FIG. 3 a side view of the separate Schaltpolgehäuse and
  • FIGS. 4 and 5 a section of the in FIG. 2 shown first part of the Umgehäuses in perspective view before and after the insertion of one of the separate Schaltpolgehäuse.

Gemäß dem in der Figur 1 gezeigten Grundschema des erfindungsgemäßen mehrpoligen elektrischen Schaltgerätes 1, weist dieses Schaltgerät Schaltglieder in Form von Schaltkontakten 2, 3 und 4, 5 zur doppelten Unterbrechung einer ersten Strombahn 6 eines ersten Schaltpoles 7 auf. Die Strombahn 6 ist Teil einer ersten Hauptstrombahn eines Energieverteilernetzes, insbesondere eines Niederspannungsnetzes. Den Schaltkontakten 2, 3 ist ein erstes und den Schaltkontakten 4, 5 ein zweites Lichtbogenlöschglied zugeordnet, wobei die Lichtbogenlöschglieder als Löschblechpakete 8, 9 ausgebildet sind. Das elektrische Schaltgerät 1 weist einen durch ein erstes Schaltpolgehäuse 10 begrenzten ersten Schaltraum 11 zur Aufnahme der Schaltkontakte 2, 3; 4, 5 des ersten Schaltpoles 7 auf. Antriebsglieder, die einen Antriebsmechanismus 12 des elektrischen Schaltgerätes bilden, dienen zum Öffnen und Schließen der Schaltkontakte 2, 3; 4, 5. Weiterhin weist das elektrische Schaltgerät einen Abschaltmechanismus 13 in Form eines Schaltschlosses auf. Das Schaltschloss ist als mechanisches Zwischenglied zwischen den Schalt- und Antriebsgliedern im Zuge des Antriebsmechanismus 12 angeordneten. In dem elektrischen Schaltgerät 1 sind Auslöseglieder vorgesehen, die ein Auslösen des Abschaltmechanismus 13 - also ein Lösen einer Verklinkung des Schaltschlosses - bewirken, um den Antriebsmechanismus 12 zum Öffnen der Schaltkontakte 2, 3; 4, 5 in Gang zu setzen. Als Auslöseglieder sind insbesondere ein thermischer Auslöser 14 (als Überlast-Erfassungsglied), ein elektromagnetischer Auslöser 15 (als Kurzschluss-Erfassungsglied) und ein frontseitig aus einer vorderen Isolierabdeckung ragender manueller Auslöser 16 vorgesehen, mittels derer das Schaltschloss zum Öffnen der Schaltkontakte gelöst werden kann. Es können aber auch ein Druckauslöser (als Kurzschluss-Erfassungsglied) oder ein elektronischerAccording to the in the FIG. 1 shown basic scheme of the multi-pole electric switching device 1 according to the invention, this switching device switching elements in the form of switching contacts 2, 3 and 4, 5 for double interruption of a first current path 6 of a first switching pole 7. The current path 6 is part of a first main current path of a power distribution network, in particular a low-voltage network. The switching contacts 2, 3 is a first and the switching contacts 4, 5 associated with a second arc extinguishing member, wherein the arc extinguishing members are formed as splitter plate packages 8, 9. The electrical switching device 1 has a limited by a first switching pole housing 10 first switching space 11 for receiving the switching contacts 2, 3; 4, 5 of the first switching pole 7. Drive links, which form a drive mechanism 12 of the electrical switching device, serve to open and close the switching contacts 2, 3; 4, 5. Furthermore, the electrical switching device has a shut-off mechanism 13 in the form of a switching mechanism. The switching mechanism is arranged as a mechanical intermediate member between the switching and drive members in the course of the drive mechanism 12. In the electrical switching device 1 triggering members are provided, the triggering of the shut-off mechanism 13 - ie a release of a latching of the switching mechanism - cause the drive mechanism 12 to open the switching contacts 2, 3; 4, 5 in motion. In particular, a thermal release 14 (as an overload detection member), an electromagnetic release 15 (as a short-circuit detection member), and a manual release 16 protruding from a front insulating cover are provided as the triggering members, by means of which the switching mechanism can be released to open the switching contacts. But it can also be a pressure release (as a short-circuit detection member) or an electronic

Auslöser (als Überlast- und/oder Kurzschluss-Erfassungsglied) vorgesehen werden. Das elektrische Schaltgerät 1 weist parallel zu dem in der Figur 1 gezeigten ersten Schaltraum 11 weitere Schalträume auf. Die weiteren Schalträume sind jeweils durch weitere separate Schaltpolgehäuse begrenzt. In den weiteren Schalträumen sind Schaltkontakte weiterer Schaltpole angeordnet. Mittels Leitungsanschlüssen 17 sind die Enden der Strombahn 6 jedes der Schaltpole 7 jeweils mit zumindest einer elektrischen Leitung 18 der jeweiligen Hauptstrombahn des Energieverteilernetzes elektrisch verbunden. Die separaten Schaltpolgehäuse 10 sind zwischen einem als Boden ausgebildeten ersten Teil 21 und einem als Zwischendeckel ausgebildeten zweiten Teil 22 eines Umgehäuses 20 angeordnet. Ein die Isolierabdeckung bildendes drittes Teil 23 des Umgehäuses dient in üblicher Weise zum Abdecken von hier nicht weiter dargestelltem Zubehör, der in Aufnahmetaschen des Zwischendeckels angeordnet ist.Trigger (as overload and / or short-circuit detection member) are provided. The electrical switching device 1 has parallel to the in the FIG. 1 shown first switching room 11 more switching rooms on. The other switching rooms are each limited by further separate switching pole housing. In the other switching rooms switching contacts further switching poles are arranged. By means of line connections 17, the ends of the current path 6 of each of the switching poles 7 are each electrically connected to at least one electrical line 18 of the respective main current path of the power distribution network. The separate switching pole housings 10 are arranged between a first part 21 designed as a bottom and a second part 22 of a surrounding housing 20 designed as an intermediate cover. A the insulating cover forming third part 23 of the Umgehäuses used in the usual way for covering here not further Pictured accessories, which is arranged in receiving pockets of the intermediate cover.

Gemäß der Figur 2 ist das erfindungsgemäße mehrpolige elektrische Schaltgerät 1, als ein dreipoliger Niederspannungs-Leistungsschalter in Form eines Kompaktschalters in "Kassettenbauweise" ausgebildet. Er weist also drei separate Schaltpolgehäuse 10 auf, die über als Ganzes mit 25 bezeichnete Verbindungseinrichtungen miteinander verbunden sind. Jedes der drei Schaltpolgehäuse 10 besteht aus zwei Halbschalen 26, 27 und bildet eine isolierende Umhüllung eines der Schalträume 11 (vgl. Figur 1), in denen jeweils einer der drei Schaltpole angeordnet ist.According to the FIG. 2 is the multi-pole electrical switching device 1 according to the invention, designed as a three-pole low-voltage circuit breaker in the form of a compact switch in "cassette construction". So he has three separate switching pole housing 10, which designated as a whole with 25 Connecting devices are interconnected. Each of the three switching pole housing 10 consists of two half-shells 26, 27 and forms an insulating sheath of one of the switching chambers 11 (see. FIG. 1 ), in each of which one of the three switching poles is arranged.

Jeweils zwei benachbarte der drei separaten Schaltpolgehäuse 10 sind dabei mittels jeweils zweier der Verbindungseinrichtungen 25 mechanisch verbunden. Hierzu weisen die separaten Schaltpolgehäuse 10 an ihren einander zugewandten Wänden seitlich abragende hakenartige Vorsprünge 28a, 28b, 29a, 29b, 30a, 30b, 31a 31b auf. Jeweils zwei der hakenartigen Vorsprünge 28a, 28b; 29a, 29b; 30a, 30b und 31a, 31b formen eine Aufnahme 28; 29; 30; 31, die in Bezug auf eine Teilungsfuge 32, die zwischen den beiden einander zugewandten Wänden gebildete ist, jeweils einen Hinterschnitt bilden. Die Aufnahmen 28 und 29 bzw. 30 und 31 benachbarter der Schaltpolgehäuse 10 stehen als Aufnahme-Paare einander gegenüber. Zur mechanischen Verbindung der separaten Schaltpolgehäuse 10 ist jedem Aufnahme-Paar jeweils ein als Konturenelement in einem Urformverfahren einstückig an dem Boden des Umgehäuses angeformtes Verbindungsmittel 33 zugeordnet. Das Verbindungsmittel 33 hintergreift die Hinterschnitte der Aufnahmen 28 und 29 bzw. 30 und 31 des zugeordneten Aufnahme-Paares.In each case two adjacent of the three separate switching pole housing 10 are mechanically connected by means of two of the connecting means 25. For this purpose, the separate switching pole housing 10 on its mutually facing walls laterally projecting hook-like projections 28a, 28b, 29a, 29b, 30a, 30b, 31a 31b. Two each of the hook-like projections 28a, 28b; 29a, 29b; 30a, 30b and 31a, 31b form a receptacle 28; 29; 30; 31, each forming an undercut with respect to a dividing joint 32 formed between the two facing walls. The receptacles 28 and 29 and 30 and 31 adjacent the switching pole housing 10 are opposite each other as receiving pairs. For the mechanical connection of the separate switching pole housing 10, each receiving pair is associated with an integrally formed as a contour element in a primary molding process at the bottom of the surrounding housing connecting means 33. The connecting means 33 engages behind the undercuts of the receptacles 28 and 29 or 30 and 31 of the associated receiving pair.

Die Verbindungsmittel 33 weisen dabei einen Querschnitt auf, der nach Art eines doppelten Schwalbenschwanzes geformt ist. Sie erstrecken sich stiftartig im Bereich der Teilungsfugen 32 parallel zu den Teilungsfugen 32. Entsprechend bildet jede der Aufnahmen jeweils eine sich parallel zu den Teilungsfugen 32 erstreckende korrespondierende Nut mit schwalbenschwanzförmiger Querschnittsform.The connecting means 33 in this case have a cross section which is shaped in the manner of a double dovetail. They extend in a pin-like manner in the region of the dividing lines 32 parallel to the dividing joints 32. Accordingly, each of the receptacles each forms a corresponding groove with a dovetail-shaped cross-sectional shape extending parallel to the dividing joints 32.

Um sicher zu stellen, dass die Schaltpolgehäuse 10 nach der Montage des Schaltgerätes in der bevorzugten Montagerichtung in dem Umgehäuse fest fixiert sind, bildet das als Boden ausgebildete erste Teil 21 des Umgehäuses für jedes der Aufnahme-Paare jeweils einen quer zu den Teilungsfugen 32 verlaufenden ersten Anschlag 34; 35 (vgl. Figuren 3 bis 5) und das als Zwischendeckel ausgebildeten zweiten Teil 22 des Umgehäuse bildet für jedes der Aufnahme-Paare jeweils einen quer zu den Teilungsfugen 32 verlaufenden zweiten Anschlag 36; 37 (vgl. Figur 2). Die Anschläge sind so gestaltet, dass die Aufnahmen (28, 29; 30, 31) der Aufnahme-Paare mit ihren quer zu der Teilungsfuge verlaufenden Stirnseiten nach der Montage zwischen den ihnen zugeordneten ersten (34; 35) und zweiten (36; 37) Anschlägen ortsfest zum Umgehäuse gehalten sind.To ensure that the switching pole housing 10 are firmly fixed in the housing housing in the preferred mounting direction in the housing after mounting the switching device, forms the bottom formed first part 21 of the housing for each of the receiving pairs each one transverse to the dividing lines 32 extending first stop 34; 35 (cf. FIGS. 3 to 5 ) and formed as an intermediate cover second part 22 of the surrounding housing forms for each of the receiving pairs each have a transverse to the dividing lines 32 extending second stop 36; 37 (cf. FIG. 2 ). The stops are designed so that the receptacles (28, 29, 30, 31) of the receiving pairs with their transverse to the dividing joint end faces after assembly between their associated first (34, 35) and second (36, 37) Stops are held stationary to the housing.

Bei dem erfindungsgemäßen elektrischen Schaltgerät bestehen die Verbindungseinrichtungen 25 nicht aus separaten Einzelteilen, sondern sie sind in die ohnehin vorhandenen Bestandteile des elektrischen Schaltgerätes integriert. Die Montage des erfindungsgemäßen mehrpoligen elektrischen Schaltgerätes ist in einer in bevorzugter Montagerichtung ausführbar. Eine Querverbindung durch die Schalträume hindurch ist nicht erforderlich und die damit zusammenhängenden Isolationsprobleme entfallen.In the electrical switching device according to the invention, the connecting means 25 are not made of separate items, but they are integrated into the already existing components of the electrical switching device. The assembly of the multi-pole electrical switching device according to the invention can be carried out in a preferred mounting direction. A cross connection through the switching rooms is not required and the associated insulation problems eliminated.

Claims (3)

Mehrpoliges elektrisches Schaltgerät (1) mit einem Umgehäuse (20), in dem zumindest zwei separate Schaltpolgehäuse (10) aufgenommen sind, die jeweils eine isolierende Umhüllung eines Schaltraumes (11) zur Aufnahme eines einzelnen Schaltpoles bilden, - bei dem die zumindest zwei separaten Schaltpolgehäuse (10) an einander zugewandten Wänden jeweils zumindest eine Aufnahme (28, 29; 30, 31) aufweisen, die ein einander zugeordnetes Aufnahme-Paar bilden, - wobei zur mechanischen Verbindung der zumindest zwei separaten Schaltpolgehäuse dem Aufnahme-Paar ein Verbindungsmittel (33) zugeordnet ist, das in die beiden das Aufnahme-Paar bildenden Aufnahmen (28, 29; 30, 31) eingreift, dadurch gekennzeichnet, dass - die beiden das Aufnahme-Paar bildenden Aufnahmen (28, 29; 30, 31) in Bezug auf eine zwischen den beiden einander zugewandten Wänden gebildete Teilungsfuge (32) jeweils einen Hinterschnitt bilden, wobei das Verbindungsmittel (33) die Hinterschnitte hintergreift, und - dass das Verbindungsmittel (33) in einem Urformverfahren einstückig am Umgehäuse (20) angeformt ist. Multi-pole electrical switching device (1) having a surrounding housing (20) in which at least two separate switching pole housings (10) are accommodated, each of which forms an insulating enclosure of a switching chamber (11) for accommodating a single switching pole, - Wherein the at least two separate switching pole housing (10) on mutually facing walls in each case at least one receptacle (28, 29, 30, 31), which form an associated recording pair, - Wherein for mechanical connection of the at least two separate switching pole housing the receiving pair is associated with a connecting means (33) which engages in the two receptacles forming the pair of receptacles (28, 29, 30, 31), characterized in that - The two the pair of receptacles forming receptacles (28, 29, 30, 31) with respect to a formed between the two mutually facing walls dividing joint (32) each form an undercut, wherein the connecting means (33) engages behind the undercuts, and - That the connecting means (33) is integrally formed in a primary molding process on the outer housing (20). Mehrpoliges elektrisches Schaltgerät (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Umgehäuse (20) zumindest einen quer zu der Teilungsfuge (32) verlaufenden ersten Anschlag (34; 35) für das Aufnahme-Paar bildet.Multi-pole electrical switching device (1) according to Claim 1, characterized in that the surrounding housing (20) forms at least one first stop (34, 35) for the receiving pair extending transversely to the dividing joint (32). Mehrpoliges elektrisches Schaltgerät (1) nach Anspruche 2, dadurch gekennzeichnet, dass das Umgehäuse (20) zusätzlich zu dem ersten Anschlag (34; 35) zumindest einen quer zu der Teilungsfuge (32) verlaufenden zweiten Anschlag (36; 37) für das Aufnahme-Paar derart bildet, dass das Aufnahme-Paare nach der Montage der Schaltpolgehäuse (10) in dem Umgehäuse (20) zwischen dem ersten (34; 35) und dem zweiten (36; 37) Anschlag ortsfest zum Umgehäuse (20) gehalten ist.Multi-pole electrical switching device (1) according to Claim 2, characterized in that the surrounding housing (20) has, in addition to the first stop (34; 35), at least one second stop (36; 37) extending transversely to the dividing joint (32) for receiving Pair so that forms the receiving pairs after assembly the Schaltpolgehäuse (10) in the outer housing (20) between the first (34; 35) and the second (36; 37) stop is held stationary to the outer housing (20).
EP11181113.9A 2010-09-27 2011-09-13 Multi-pole electric switching device Active EP2434520B1 (en)

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US20120073945A1 (en) 2012-03-29
US8735752B2 (en) 2014-05-27
EP2434520B1 (en) 2016-01-06
DE102010041467A1 (en) 2012-03-29
CN102568942A (en) 2012-07-11
CN102568942B (en) 2015-02-25

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