EP2573786A1 - Circuit breaker with optimised housing stabilisation, in particular at high switching capacities - Google Patents

Circuit breaker with optimised housing stabilisation, in particular at high switching capacities Download PDF

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Publication number
EP2573786A1
EP2573786A1 EP11182090A EP11182090A EP2573786A1 EP 2573786 A1 EP2573786 A1 EP 2573786A1 EP 11182090 A EP11182090 A EP 11182090A EP 11182090 A EP11182090 A EP 11182090A EP 2573786 A1 EP2573786 A1 EP 2573786A1
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EP
European Patent Office
Prior art keywords
circuit breaker
housing
stabilizing element
breaker according
stabilizing
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
EP11182090A
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German (de)
French (fr)
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EP2573786B1 (en
Inventor
Alexander Spies
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Siemens AG
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Siemens AG
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Priority to EP11182090.8A priority Critical patent/EP2573786B1/en
Publication of EP2573786A1 publication Critical patent/EP2573786A1/en
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Publication of EP2573786B1 publication Critical patent/EP2573786B1/en
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    • 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
    • H01H71/025—Constructional details of housings or casings not concerning the mounting or assembly of the different internal parts
    • H01H71/0257—Strength considerations
    • 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
    • H01H2071/0242—Assembling parts of a circuit breaker by using snap mounting techniques
    • 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 a circuit breaker having a first switching device area, in which a quenching chamber device and a contact slide device are arranged with movable contact pieces which are positioned opposite to Festschalt Georgiaen, and a second switching device area in which a trip group of a short-circuit release and an overload release are arranged.
  • Circuit-breakers in particular low-voltage circuit breakers, are electromagnetic self-switches in the event of a short circuit. Their operation corresponds in principle to the operation of circuit breakers. They are usually equipped with a thermal and a magnetic release and thus have the same structural elements as circuit breakers. However, they are designed for larger rated currents, in addition, the triggers of circuit breakers, unlike the circuit breaker, sometimes separately adjustable. In the low voltage range, the switches are also used as motor protection switches.
  • the task of the circuit breaker is to protect downstream systems, in particular three-phase motors against damage due to overload or short circuit.
  • the circuit breaker should switch off these currents in conjunction with the network protection devices. If there is gas between the two poles, it will be ionized by the flashover with a correspondingly high voltage difference between the poles, forming a self-sustaining gas discharge, also known as an arc. This plasma not only continues to conduct power, but also reduces the life of the device, and at high currents it can even destroy the switch.
  • disconnectors are circuit breakers designed so that the arcing occurring when opening the switch contacts deleted quickly and without damaging the switch and thus the flow of current is interrupted.
  • a particular problem with circuit breakers with high switching capacity, in particular up to 100 kA at rated currents up to 80 A is that with such large short circuits, the load on the chamber walls, that is, especially on the lower part of the circuit breaker due to the large pressure development very high is.
  • the housing walls may bend outwards in such tripping operations or lead to a tear in the upper part of the circuit breaker. In the worst case, parts of the shell are broken off.
  • this electrical circuit breaker is provided to glue the preassembled contact and connection parts of the trip unit in the housing or a housing part, so that the attachment of these preassembled contact and connecting parts in the housing takes place without additional connection.
  • adhesive pockets are present on the housing, which are filled with adhesive material. In this adhesive pockets protrude pins of the trip unit, which are glued in the adhesive pockets.
  • the permanent adhesive connection keeps the bimetallic position stable. Thermal and mechanical stresses are significantly reduced by the use of the adhesive and by bonding, while the heat and dimensional stability is ensured.
  • the object of the present invention is to provide a circuit breaker, which has stable housing walls even at high switching performance and thereby offers easy installation handling.
  • this object is achieved by a circuit breaker having a first switching device area, in which a quenching chamber device and a contact slide device are arranged with movable contact pieces, which are positioned opposite to Festschalt Georgiaen, and a second switching device area in which a trip group of a short-circuit release and an overload release are arranged ,
  • the invention is characterized in that the fixed contact pieces are mounted on at least one of the housing stabilization in the event of triggering serving stabilization element.
  • the housing walls of the switching chambers of the circuit breaker are kept at a distance by the stabilizing element according to the invention.
  • the stabilizing element is designed in particular as a bolt and is preferably screwed in the last assembly step to the first switching device area.
  • opposite outer walls of the circuit breaker support each other in the event of a short circuit.
  • the stabilizing element according to the invention is designed such that it is fitted in the intermediate walls of the first and second switching device area to the required air and To ensure creepage distances. As a result, the intermediate walls are stabilized at the same time.
  • the stabilization elements in particular the bolts, are plugged or clipped onto the fixed contact pieces and the release assembly. Thereafter, the assembly takes place in the second switching device area. Corresponding counter contours ensure a secure hold. The second switching device area is then placed on the first switching device area.
  • the stabilizing elements put here in corresponding fixation structures. At the same time, these fixing structures serve to maintain air and creepage distances.
  • the stabilizing elements, in particular bolts are fixed from the outside on both sides with a screw to the first switching device area.
  • the stabilizing element according to the invention is preferably made of plastic, in particular of PA66.
  • the stabilizing element preferably has three subregions arranged side by side. Each subregion comprises two mutually parallel aligned guide surfaces, on each of which two oppositely arranged lugs are located.
  • fixing structures are provided in each case between the subregions of the stabilizing element according to the invention.
  • the fixing structures are U-shaped with two parallel legs and a leg connecting the transition region. These fixing structures engage in housing structures of the circuit breaker and ensure that the housing walls are fixed in position stable in the event of tripping.
  • the stabilizing element according to the invention in particular for a circuit breaker, is supported on the intermediate and outer ⁇ -walls of the lower part.
  • the wall deflection of the lower part and thus also of the upper part is thereby reduced.
  • it is provided to fix the contact pieces on the stabilizing element, which in turn is then and lower part is fitted.
  • the assembly is unambiguous and assemblies oriented.
  • the convective cooling channel is made possible for cooling the flow path.
  • the stabilizing element according to the invention is preferably made of plastic, in particular PA66.
  • the assembly envisages clipping on the stabilizing elements, the Festschalt publishede and the trigger assembly. Then the assembly takes place in the upper part. Corresponding counter contours ensure a secure hold. The entire upper part is then placed on the lower part.
  • the two stabilizing elements lie here in corresponding counter contours of the housing. These serve at the same time to maintain the clearances and creepage distances.
  • the stabilizing elements are then fixed from the outside on both sides, preferably with a screw to the lower part.
  • Fig. 1 shows a stabilizing element according to the invention 1, which is preferably divided into three juxtaposed sub-areas 2, 3, 4, wherein each portion 2, 3, 4 each have two opposing guide surfaces 5, 6 and the two guide surfaces 5, 6 interconnecting bottom 7 , At the guide surfaces 5, 6 a protruding nose 8 is arranged in each case.
  • the lugs 8 on the guide surfaces 5, 6 are arranged opposite one another.
  • fixing structures 9 are arranged, which are designed such that they engage position stable in housing structures of the circuit breaker.
  • the fixing structures 9 are preferably U-shaped with two mutually parallel legs 10, 11 and a transition region 12.
  • the stabilizing element 1 may preferably be fastened by screws to the housing of the circuit breaker.
  • the stabilizing element 1 is preferably made of plastic, in particular PA66.
  • Fig. 2 is the stabilizing element 1 before ( Fig. 2 right) and after ( Fig. 2 on the left) of the mounting on a locking piece 14, which is preferably U-shaped, with two legs 15, 16 arranged parallel to one another and a transition area 17.
  • Fig. 2 right is the leg 15 of the Festschalt Swisss 14 below the stabilizing element 1 and the second leg 16 above the lugs 8 on the guide surfaces 5, 6 of the stabilizing element 1.
  • the second leg 16 of the Festschalt Industriess 14 is clamped below the nose 8 of the stabilizing element 1.
  • Out Fig. 3 the mounting state before the jamming of the leg 16 below the nose 8 of the stabilizing element 1 shows.
  • FIG. 4 the stabilizing element 1 is shown with attached Festschalt Glaen 14 and tripping assembly 18.
  • Fig. 5 is the assembly of stabilizing element 1, Festschalt Swissen 14 and trigger assembly 18 of Fig. 4 mounted in the housing of the second switching device area, that is, the upper part 19 of the circuit breaker shown.
  • the legs 10, 11 of the fixing structure 9 of the stabilizing element 1 which are arranged between the sub-areas 2 and 3 and 3 and 4, engage in counter-contours 20 provided for this purpose for the housing of the upper part 19 of the circuit breaker.
  • Fig. 6 the counter contour 20 for the fixing structure 9 on the stabilizing element 1 is shown enlarged.
  • Fig. 7 shows the stabilizing element 1 plugged onto the first switching device area, that is, on the lower part 21 of the circuit breaker.
  • Out Fig. 7 shows that the counter contours 22 are provided in the housing of the lower part 21, which comprise the fixing structure 9 of the stabilizing element 1.
  • the mating contours 22 of the lower part 21 are formed tightly against the legs 10, 11 of the fixing structure 9. The fixing structure 9 thus engages in a groove of the housing of the lower part 21st
  • Fig. 8 shows the position of the stabilizing element 1, when it is installed in a circuit breaker, which is formed from an upper part 19 and a lower part 21.
  • the stabilizing elements 1 can be fixed from the outside on both sides of the lower part 21.
  • the stabilizing element according to the invention in particular for a circuit breaker, is supported on the intermediate and outer ⁇ -walls of the lower part.
  • the wall deflection of the lower part and thus also of the upper part is thereby reduced.
  • it is provided to fix the switching pieces on the stabilizing element, which is then in turn fitted in the upper and lower part.
  • the assembly is unambiguous and assemblies oriented. It is also advantageous that the convective cooling channel is made possible for cooling the flow path. Although the order of assembly must be changed, however, the walls of the lower part are advantageously aligned with one another by the impressions of the stabilizing element.
  • the height dimension of the fixed switching pieces is adjusted by the clamping acting stabilizing element with great accuracy.
  • the two legs of the Festschalt may be kept apart. In addition, air and creepage distances between the chambers and outward are maintained.
  • the stabilizing element is preferably made of plastic, in particular PA66.
  • the assembly envisages clipping on the stabilizing elements, the Festschalt publishede and the trigger assembly. Then the assembly takes place in the upper part. Corresponding counter contours ensure a secure hold. The entire top is then on the Lower part attached.
  • the two stabilizing elements lie here in corresponding counter contours of the housing. These serve at the same time to maintain the clearances and creepage distances.
  • the stabilizing elements are then fixed from the outside on both sides, preferably with a screw to the lower part.

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  • Breakers (AREA)

Abstract

The power switch has a switching device region equipped with a quenching chamber device and a contact slide device provided with the movable contact portions. The movable contact portions are positioned opposite to fixed contact portion. Another switching device region has a trigger assembly comprising a short-circuit release portion and an overload release portion. The fixed contact portions are plugged at the housing and stabilized by a tripping case stabilizing element (1) made of plastic such as polyamide 66 (PA66).

Description

Die Erfindung betrifft einen Leistungsschalter mit einem ersten Schaltgerätebereich, in welchem eine Löschkammervorrichtung und eine Kontaktschiebervorrichtung mit beweglichen Schaltstücken angeordnet sind, welche gegenüberliegend zu Festschaltstücken positioniert sind, und einem zweiten Schaltgerätebereich, in welchem eine Auslösegruppe aus einem Kurzschlussauslöser und einem Überlastauslöser angeordnet sind.The invention relates to a circuit breaker having a first switching device area, in which a quenching chamber device and a contact slide device are arranged with movable contact pieces which are positioned opposite to Festschaltstücken, and a second switching device area in which a trip group of a short-circuit release and an overload release are arranged.

Leistungsschalter, insbesondere Niederspannungs-Leistungsschalter sind im Kurzschlussfall elektromagnetische Selbstschalter. Ihre Arbeitsweise entspricht prinzipiell der Arbeitsweise von Leitungsschutzschaltern. Sie sind meist mit einem thermischen und einem magnetischen Auslöser ausgestattet und besitzen somit die gleichen konstruktiven Elemente wie Leitungsschutzschalter. Allerdings sind sie für größere Bemessungsströme konstruiert, außerdem sind die Auslöser von Leistungsschaltern, anders als beim Leitungsschutzschalter, teilweise separat einstellbar. Im Niederspannungsbereich werden die Schalter auch als Motorschutzschalter eingesetzt.Circuit-breakers, in particular low-voltage circuit breakers, are electromagnetic self-switches in the event of a short circuit. Their operation corresponds in principle to the operation of circuit breakers. They are usually equipped with a thermal and a magnetic release and thus have the same structural elements as circuit breakers. However, they are designed for larger rated currents, in addition, the triggers of circuit breakers, unlike the circuit breaker, sometimes separately adjustable. In the low voltage range, the switches are also used as motor protection switches.

Die Aufgabe des Leistungsschalters besteht darin, nachgeordnete Anlagen, insbesondere Drehstrommotoren vor Schäden durch Überlast oder Kurzschluss zu schützen. Dabei soll der Leistungsschalter diese Ströme in Verbindung mit den Einrichtungen des Netzschutzes ausschalten. Befindet sich Gas zwischen den beiden Polen, wird es bei entsprechend hoher Spannungsdifferenz zwischen den Polen durch den Überschlag ionisiert, und es bildet sich eine sich selbst erhaltende Gasentladung, die auch als Lichtbogen bezeichnet wird. Dieses Plasma leitet nicht nur weiterhin Strom, sondern reduziert auch die Lebensdauer des Bauteils, bei starken Strömen kann es den Schalter sogar zerstören. Im Gegensatz zu Trennern sind Leistungsschalter so konstruiert, dass der beim Öffnen der Schaltkontakte entstehende Lichtbogen schnell und ohne Beschädigung des Schalters gelöscht und damit der Stromfluss unterbrochen wird.The task of the circuit breaker is to protect downstream systems, in particular three-phase motors against damage due to overload or short circuit. The circuit breaker should switch off these currents in conjunction with the network protection devices. If there is gas between the two poles, it will be ionized by the flashover with a correspondingly high voltage difference between the poles, forming a self-sustaining gas discharge, also known as an arc. This plasma not only continues to conduct power, but also reduces the life of the device, and at high currents it can even destroy the switch. In contrast to disconnectors are circuit breakers designed so that the arcing occurring when opening the switch contacts deleted quickly and without damaging the switch and thus the flow of current is interrupted.

Ein besonderes Problem bei Leistungsschaltern mit hohem Schaltvermögen, insbesondere bis zu 100 kA bei Nennströmen bis zu 80 A besteht darin, dass bei solch großen Kurzschlüssen die Belastung auf die Kammerwände, das heißt, insbesondere auf das Unterteil des Leistungsschalters auf Grund der großen Druckentwicklung sehr hoch ist. Die Gehäusewände können sich bei solchen Auslösevorgängen nach außen biegen oder zu einem Einriss im Oberteil des Leistungsschalters führen. Im schlimmsten Fall werden Teile des Oberteils weggebrochen.A particular problem with circuit breakers with high switching capacity, in particular up to 100 kA at rated currents up to 80 A is that with such large short circuits, the load on the chamber walls, that is, especially on the lower part of the circuit breaker due to the large pressure development very high is. The housing walls may bend outwards in such tripping operations or lead to a tear in the upper part of the circuit breaker. In the worst case, parts of the shell are broken off.

Dazu beschreibt die WO 01/33595 A1 einen elektrischen Schutzschalter, insbesondere Motorschutzschalter mit einem Gehäuse aus Duroplast, einer Schaltkontaktanordnung, einer Auslöseeinheit mit mindestens einem Bimetallauslöser, einer auf ein Schaltschloss wirkenden und vom Bimetall betätigbare Auslösebrücke und einem Teileträger aus Isolierstoff für verschiedene, auf diesem Teileträger formatierbare Kontakt- und Anschlussteile der Auslöseeinheit. Bei diesem elektrischen Schutzschalter ist vorgesehen, die vormontierbaren Kontakt- und Anschlussteile der Auslöseeinheit in das Gehäuse oder einem Gehäuseteil zu verkleben, so dass die Befestigung dieser vormontierbaren Kontakt- und Anschlussteile im Gehäuse ohne zusätzliche Verbindung erfolgt. Dazu sind am Gehäuse Klebetaschen vorhanden, die mit Klebematerial befüllt sind. In diese Klebetaschen ragen Stifte der Auslöseeinheit, die in den Klebetaschen verklebbar sind. Durch die dauerhafte Klebeverbindung wird die Bimetallposition stabil gehalten. Thermische und mechanische Spannungen werden durch die Verwendung des Klebemittels und durch das Kleben erheblich gemindert, während die Wärme- und Formstabilität gewährleistet ist.This describes the WO 01/33595 A1 an electrical circuit breaker, in particular motor protection switch with a housing made of thermosetting plastic, a switching contact arrangement, a trip unit with at least one bimetal, acting on a switch lock and operable by the bimetal trip bridge and a part carrier of insulating material for different, formattable on this parts carrier contact and connection parts of the trip unit , In this electrical circuit breaker is provided to glue the preassembled contact and connection parts of the trip unit in the housing or a housing part, so that the attachment of these preassembled contact and connecting parts in the housing takes place without additional connection. For this purpose, adhesive pockets are present on the housing, which are filled with adhesive material. In this adhesive pockets protrude pins of the trip unit, which are glued in the adhesive pockets. The permanent adhesive connection keeps the bimetallic position stable. Thermal and mechanical stresses are significantly reduced by the use of the adhesive and by bonding, while the heat and dimensional stability is ensured.

Der Nachteil am Stand der Technik besteht darin, dass Klebeverbindungen immer einem Alterungsprozess unterworfen sind und zudem die Montage aufwändig ist, da für eine Klebeverbindung immer zwei Teile passgenau zueinander geführt werden müssen.The disadvantage of the prior art is that adhesive bonds are always subjected to an aging process In addition, the assembly is complex, since for an adhesive connection always two parts must be made precisely to each other.

Demgemäß besteht die Aufgabe der vorliegenden Erfindung darin, einen Leistungsschalter zu schaffen, der auch bei hohen Schaltleistungen stabile Gehäusewandungen aufweist und dabei eine einfache Montagehandhabung bietet.Accordingly, the object of the present invention is to provide a circuit breaker, which has stable housing walls even at high switching performance and thereby offers easy installation handling.

Diese Aufgabe wird durch einen Leistungsschalter mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Aus- und Weiterbildungen, welche einzeln oder in Kombination miteinander eingesetzt werden können, sind der Gegenstand der abhängigen Ansprüche.This object is achieved by a circuit breaker having the features of patent claim 1. Advantageous embodiments and developments, which can be used individually or in combination with each other, are the subject of the dependent claims.

Erfindungsgemäß wird diese Aufgabe durch einen Leistungsschalter mit einem ersten Schaltgerätebereich gelöst, in welchem eine Löschkammervorrichtung und eine Kontaktschiebervorrichtung mit beweglichen Schaltstücken angeordnet sind, welche gegenüberliegend zu Festschaltstücken positioniert sind, und einem zweiten Schaltgerätebereich, in welchem eine Auslösegruppe aus einem Kurzschlussauslöser und einem Überlastauslöser angeordnet sind. Die Erfindung zeichnet sich dadurch aus, dass die Festschaltstücke auf mindestens einem der Gehäusestabilisierung im Auslösefall dienendem Stabilisierungselement aufgesteckt sind.According to the invention, this object is achieved by a circuit breaker having a first switching device area, in which a quenching chamber device and a contact slide device are arranged with movable contact pieces, which are positioned opposite to Festschaltstücken, and a second switching device area in which a trip group of a short-circuit release and an overload release are arranged , The invention is characterized in that the fixed contact pieces are mounted on at least one of the housing stabilization in the event of triggering serving stabilization element.

Die Gehäusewände der Schaltkammern des Leistungsschalters werden durch das erfindungsgemäße Stabilisierungselement auf Distanz gehalten. Das Stabilisierungselement ist insbesondere als Bolzen ausgebildet und wird im letzten Montageschritt an den ersten Schaltgerätebereich vorzugsweise angeschraubt. Dadurch stützen sich gegenüberliegende Außenwände des Leistungsschalters im Kurzschlussfall gegenseitig ab. Das erfindungsgemäße Stabilisierungselement ist derart ausgebildet, dass es in die Zwischenwände des ersten und zweiten Schaltgerätebereichs eingepasst ist, um die erforderlichen Luft- und Kriechstrecken zu gewährleisten. Dies führt dazu, dass gleichzeitig auch die Zwischenwände stabilisiert werden.The housing walls of the switching chambers of the circuit breaker are kept at a distance by the stabilizing element according to the invention. The stabilizing element is designed in particular as a bolt and is preferably screwed in the last assembly step to the first switching device area. As a result, opposite outer walls of the circuit breaker support each other in the event of a short circuit. The stabilizing element according to the invention is designed such that it is fitted in the intermediate walls of the first and second switching device area to the required air and To ensure creepage distances. As a result, the intermediate walls are stabilized at the same time.

Erfindungsgemäß ist vorgesehen, dass die Stabilisierungselemente, insbesondere die Bolzen, auf die Festschaltstücke und die Auslösebaugruppe aufgesteckt beziehungsweise angeklipst werden. Danach erfolgt die Montage in den zweiten Schaltgerätebereich. Dabei sorgen entsprechende Gegenkonturen für einen sicheren Halt. Der zweite Schaltgerätebereich wird dann auf den ersten Schaltgerätebereich aufgesetzt. Dabei legen sich die Stabilisierungselemente auch hier in entsprechende Fixierungsstrukturen. Diese Fixierungsstrukturen dienen gleichzeitig auch der Einhaltung der Luft- und Kriechstrecken. Abschließend werden die Stabilisierungselemente, insbesondere Bolzen, von außen beidseitig mit einer Schraube an den ersten Schaltgerätebereich fixiert.According to the invention, it is provided that the stabilization elements, in particular the bolts, are plugged or clipped onto the fixed contact pieces and the release assembly. Thereafter, the assembly takes place in the second switching device area. Corresponding counter contours ensure a secure hold. The second switching device area is then placed on the first switching device area. Here, the stabilizing elements put here in corresponding fixation structures. At the same time, these fixing structures serve to maintain air and creepage distances. Finally, the stabilizing elements, in particular bolts, are fixed from the outside on both sides with a screw to the first switching device area.

Das erfindungsgemäße Stabilisierungselement ist vorzugsweise aus Kunststoff, insbesondere aus PA66 ausgebildet. Das Stabilisierungselement weist vorzugsweise drei nebeneinander angeordnete Teilbereiche auf. Jeder Teilbereich umfasst zwei zueinander parallel ausgerichtete Führungsflächen, an welchen jeweils zwei sich gegenüber liegend angeordnete Nasen befinden. Jeweils zwischen den Teilbereichen des erfindungsgemäßen Stabilisierungselements, sind Fixierungsstrukturen vorgesehen. Die Fixierungsstrukturen sind U-förmig ausgebildet mit zwei parallel zueinander ausgebildeten Schenkeln und einem die Schenkel verbindenden Übergangsbereich. Diese Fixierungsstrukturen greifen in Gehäusestrukturen des Leistungsschalters und sorgen dafür, dass die Gehäusewandungen im Auslösefall positionsstabil fixiert sind.The stabilizing element according to the invention is preferably made of plastic, in particular of PA66. The stabilizing element preferably has three subregions arranged side by side. Each subregion comprises two mutually parallel aligned guide surfaces, on each of which two oppositely arranged lugs are located. In each case between the subregions of the stabilizing element according to the invention, fixing structures are provided. The fixing structures are U-shaped with two parallel legs and a leg connecting the transition region. These fixing structures engage in housing structures of the circuit breaker and ensure that the housing walls are fixed in position stable in the event of tripping.

Das erfindungsgemäße Stabilisierungselement, insbesondere für einen Leistungsschalter, stützt sich an den Zwischen- und Au-βenwänden des Unterteils ab. Die Wandausbiegung des Unterteils und somit auch des Oberteils wird dadurch verringert. Erfindungsgemäß ist vorgesehen, die Schaltstücke auf dem Stabilisierungselement zu fixieren, das dann wiederum im Ober- und Unterteil eingepasst wird. Die Montage ist dabei eindeutig und Baugruppen orientiert. Vorteilhaft ist außerdem, dass der konvektive Kühlkanal zur Kühlung der Strombahn ermöglicht wird. Die Montagereihenfolge muss zwar verändert werden, jedoch werden durch das Eindrücken des Stabilisierungselements die Wände des Unterteils in vorteilhafter Weise zueinander ausgerichtet. Das Höhenmaß der Festschaltstücke wird durch das klemmend wirkende Stabilisierungselement mit großer Genauigkeit eingestellt. Die beiden Schenkel der Festschaltstücke werden auseinander gehalten. Zudem werden Luft- und Kriechstrecken zwischen den Kammern sowie nach außen eingehalten.The stabilizing element according to the invention, in particular for a circuit breaker, is supported on the intermediate and outer β-walls of the lower part. The wall deflection of the lower part and thus also of the upper part is thereby reduced. According to the invention, it is provided to fix the contact pieces on the stabilizing element, which in turn is then and lower part is fitted. The assembly is unambiguous and assemblies oriented. It is also advantageous that the convective cooling channel is made possible for cooling the flow path. Although the order of assembly must be changed, however, the walls of the lower part are advantageously aligned with one another by the impressions of the stabilizing element. The height dimension of the fixed switching pieces is adjusted by the clamping acting stabilizing element with great accuracy. The two legs of the Festschaltstücke be kept apart. In addition, air and creepage distances between the chambers and outward are maintained.

Das erfindungsgemäße Stabilisierungselement ist vorzugsweise aus Kunststoff ausgebildet, insbesondere aus PA66. Die Montage sieht vor, dass auf die Stabilisierungselemente die Festschaltstücke und die Auslösebaugruppe angeklipst werden. Danach erfolgt die Montage ins Oberteil. Entsprechende Gegenkonturen sorgen für einen sicheren Halt. Das gesamte Oberteil wird dann auf das Unterteil aufgesetzt. Die beiden Stabilisierungselemente legen sich auch hier in entsprechende Gegenkonturen des Gehäuses. Diese dienen gleichzeitig der Einhaltung der Luft- und Kriechstrecken. Die Stabilisierungselemente werden dann von außen beidseitig vorzugsweise mit einer Schraube an das Unterteil fixiert.The stabilizing element according to the invention is preferably made of plastic, in particular PA66. The assembly envisages clipping on the stabilizing elements, the Festschaltstücke and the trigger assembly. Then the assembly takes place in the upper part. Corresponding counter contours ensure a secure hold. The entire upper part is then placed on the lower part. The two stabilizing elements lie here in corresponding counter contours of the housing. These serve at the same time to maintain the clearances and creepage distances. The stabilizing elements are then fixed from the outside on both sides, preferably with a screw to the lower part.

Weitere Vorteile und Ausführungsformen der Erfindung werden nachfolgend anhand von Ausführungsbeispielen sowie anhand der Zeichnung erläutert.Further advantages and embodiments of the invention will be explained below with reference to embodiments and with reference to the drawing.

Dabei zeigen schematisch:

  • Fig. 1 in einer perspektivischen Darstellung ein Ausführungsbeispiel eines erfindungsgemäßen Stabilisierungselements;
  • Fig. 2 in einer Schnittdarstellung das Stabilisierungselement direkt vor und nach der Montage auf einem Festschaltstück;
  • Fig. 3 in einer perspektivischen Darstellung das am Festschaltstück fixierte Stabilisierungselement;
  • Fig. 4 in einer perspektivischen Darstellung das Stabilisierungselement mit Festschaltstücken und Auslösebaugruppe;
  • Fig. 5 in einer perspektivischen Darstellung das Stabilisierungselement mit den Festschaltstücken integriert im zweiten Schaltgerätebereich;
  • Fig. 6 in einer perspektivischen Darstellung einen Ausschnitt aus Fig. 5, in welchem die Fixierung des Stabilisierungselements in der Gehäuseumgebung des Leistungsschalters dargestellt ist;
  • Fig. 7 in einer perspektivischen Darstellung das Stabilisierungselement aufgesteckt auf dem ersten Schaltgerätebereich;
  • Fig. 8 in einer perspektivischen Darstellung die Verschraubung des Stabilisierungselements am ersten Schaltgerätebereich.
Here are shown schematically:
  • Fig. 1 in a perspective view of an embodiment of a stabilizing element according to the invention;
  • Fig. 2 in a sectional view, the stabilizing element directly before and after mounting on a Festschaltstück;
  • Fig. 3 in a perspective view fixed to the Festschaltstück stabilizing element;
  • Fig. 4 in a perspective view of the stabilizing element with Festschaltstücken and tripping assembly;
  • Fig. 5 in a perspective view, the stabilizing element with the Festschaltstücken integrated in the second switching device area;
  • Fig. 6 in a perspective view of a section Fig. 5 in which the fixation of the stabilizing element in the housing environment of the circuit breaker is shown;
  • Fig. 7 in a perspective view, the stabilizing element plugged on the first switching device area;
  • Fig. 8 in a perspective view the screwing of the stabilizing element on the first switching device area.

Fig. 1 zeigt ein erfindungsgemäßes Stabilisierungselement 1, das vorzugsweise in drei nebeneinander angeordneten Teilbereichen 2, 3, 4 unterteilt ist, wobei jeder Teilbereich 2, 3, 4 jeweils zwei sich gegenüberliegende Führungsflächen 5, 6 sowie einen die beiden Führungsflächen 5, 6 miteinander verbindenden Boden 7 aufweisen. An den Führungsflächen 5, 6 ist jeweils eine vorstehende Nase 8 angeordnet. Die Nasen 8 an den Führungsflächen 5, 6 sind sich gegenüberliegend angeordnet. Zwischen den Teilbereichen 2 und 3 sowie 3 und 4 sind Fixierungsstrukturen 9 angeordnet, die derart ausgebildet sind, dass sie in Gehäusestrukturen des Leistungsschalters positionsstabil eingreifen. Die Fixierungsstrukturen 9 sind vorzugsweise U-förmig ausgebildet mit zwei parallel zueinander angeordneten Schenkeln 10, 11 sowie einem Übergangsbereich 12. Vom Übergangsbereich 12 der Führungsstruktur 9 ist vorzugsweise ein stegförmiger Fortsatz 13 parallel, aber entgegen gerichtet zu den Schenkeln 10, 11 der Fixierungsstruktur 9 ausgebildet. Das Stabilisierungselement 1 kann vorzugsweise durch Schrauben am Gehäuse des Leistungsschalters befestigt sein. Das Stabilisierungselement 1 ist vorzugsweise aus Kunststoff, insbesondere aus PA66 ausgebildet. Fig. 1 shows a stabilizing element according to the invention 1, which is preferably divided into three juxtaposed sub-areas 2, 3, 4, wherein each portion 2, 3, 4 each have two opposing guide surfaces 5, 6 and the two guide surfaces 5, 6 interconnecting bottom 7 , At the guide surfaces 5, 6 a protruding nose 8 is arranged in each case. The lugs 8 on the guide surfaces 5, 6 are arranged opposite one another. Between the sections 2 and 3 and 3 and 4 fixing structures 9 are arranged, which are designed such that they engage position stable in housing structures of the circuit breaker. The fixing structures 9 are preferably U-shaped with two mutually parallel legs 10, 11 and a transition region 12. From the transition region 12 of the guide structure 9 is preferably a web-shaped extension 13 parallel, but opposite directed to the legs 10, 11 of the fixing structure 9 is formed. The stabilizing element 1 may preferably be fastened by screws to the housing of the circuit breaker. The stabilizing element 1 is preferably made of plastic, in particular PA66.

In Fig. 2 ist das Stabilisierungselement 1 vor (Fig. 2 rechts) und nach (Fig. 2 links) der Montage an einem Feststellstück 14 dargestellt, das vorzugsweise U-förmig ausgebildet ist, mit zwei parallel zueinander angeordneten Schenkel 15, 16 und einem Übergangsbereich 17. Vor der Montage (Fig. 2 rechts), befindet sich der Schenkel 15 des Festschaltstücks 14 unterhalb des Stabilisierungselementes 1 und der zweite Schenkel 16 oberhalb der Nasen 8 an den Führungsflächen 5, 6 des Stabilisierungselements 1. Nach der Montage (Fig. 2 links) ist der zweite Schenkel 16 des Festschaltstücks 14 unterhalb der Nase 8 des Stabilisierungselements 1 geklemmt. Aus Fig. 3 geht der Montagezustand vor der Verklemmung des Schenkels 16 unterhalb der Nase 8 des Stabilisierungselements 1 hervor.In Fig. 2 is the stabilizing element 1 before ( Fig. 2 right) and after ( Fig. 2 on the left) of the mounting on a locking piece 14, which is preferably U-shaped, with two legs 15, 16 arranged parallel to one another and a transition area 17. Fig. 2 right), is the leg 15 of the Festschaltstücks 14 below the stabilizing element 1 and the second leg 16 above the lugs 8 on the guide surfaces 5, 6 of the stabilizing element 1. After mounting ( Fig. 2 left), the second leg 16 of the Festschaltstücks 14 is clamped below the nose 8 of the stabilizing element 1. Out Fig. 3 the mounting state before the jamming of the leg 16 below the nose 8 of the stabilizing element 1 shows.

In Fig. 4 ist das Stabilisierungselement 1 mit angeklipsten Festschaltstücken 14 und Auslösebaugruppe 18 dargestellt. In Fig. 5 ist die Baueinheit aus Stabilisierungselement 1, Festschaltstücken 14 und Auslösebaugruppe 18 der Fig. 4 montiert im Gehäuse des zweiten Schaltgerätebereichs, also des Oberteils 19 des Leistungsschalters dargestellt. Dabei greifen die Schenkel 10, 11 der Fixierungsstruktur 9 des Stabilisierungselements 1, die zwischen den Teilbereichen 2 und 3 sowie 3 und 4 angeordnet sind, in dafür vorgesehene Gegenkonturen 20 des Gehäuses des Oberteils 19 des Leistungsschalters ein. In Fig. 6 ist die Gegenkontur 20 für die Fixierungsstruktur 9 am Stabilisierungselement 1 vergrößert dargestellt.In Fig. 4 the stabilizing element 1 is shown with attached Festschaltstücken 14 and tripping assembly 18. In Fig. 5 is the assembly of stabilizing element 1, Festschaltstücken 14 and trigger assembly 18 of Fig. 4 mounted in the housing of the second switching device area, that is, the upper part 19 of the circuit breaker shown. In this case, the legs 10, 11 of the fixing structure 9 of the stabilizing element 1, which are arranged between the sub-areas 2 and 3 and 3 and 4, engage in counter-contours 20 provided for this purpose for the housing of the upper part 19 of the circuit breaker. In Fig. 6 the counter contour 20 for the fixing structure 9 on the stabilizing element 1 is shown enlarged.

Fig. 7 zeigt das Stabilisierungselement 1 aufgesteckt auf den ersten Schaltgerätebereich, das heißt auf dem Unterteil 21 des Leistungsschalters. Aus Fig. 7 geht hervor, dass im Gehäuse des Unterteils 21 die Gegenkonturen 22 vorgesehen sind, die die Fixierungsstruktur 9 des Stabilisierungselements 1 umfassen. Die Gegenkonturen 22 des Unterteils 21 sind dabei eng anliegend an die Schenkel 10, 11 der Fixierungsstruktur 9 ausgebildet. Die Fixierungsstruktur 9 greift demgemäß in eine Nut des Gehäuses des Unterteils 21. Fig. 7 shows the stabilizing element 1 plugged onto the first switching device area, that is, on the lower part 21 of the circuit breaker. Out Fig. 7 shows that the counter contours 22 are provided in the housing of the lower part 21, which comprise the fixing structure 9 of the stabilizing element 1. The mating contours 22 of the lower part 21 are formed tightly against the legs 10, 11 of the fixing structure 9. The fixing structure 9 thus engages in a groove of the housing of the lower part 21st

Aus Fig. 8 geht die Lage des Stabilisierungselements 1 hervor, wenn es in einem Leistungsschalter verbaut ist, der aus einem Oberteil 19 und einem Unterteil 21 ausgebildet ist. Vorzugsweise über eine Schraube 23 können die Stabilisierungselemente 1 von außen beidseitig am Unterteil 21 fixiert werden.Out Fig. 8 shows the position of the stabilizing element 1, when it is installed in a circuit breaker, which is formed from an upper part 19 and a lower part 21. Preferably, via a screw 23, the stabilizing elements 1 can be fixed from the outside on both sides of the lower part 21.

Das erfindungsgemäße Stabilisierungselement, insbesondere für einen Leistungsschalter, stützt sich an den Zwischen- und Au-βenwänden des Unterteils ab. Die Wandausbiegung des Unterteils und somit auch des Oberteils wird dadurch verringert. Erfindungsgemäß ist vorgesehen, die Schaltstücke auf dem Stabilisierungselement zu fixieren, das dann wiederum im Ober- und Unterteil eingepasst wird. Die Montage ist dabei eindeutig und Baugruppen orientiert. Vorteilhaft ist außerdem, dass der konvektive Kühlkanal zur Kühlung der Strombahn ermöglicht wird. Die Montagereihenfolge muss zwar verändert werden, jedoch werden durch das Eindrücken des Stabilisierungselements die Wände des Unterteils in vorteilhafter Weise zueinander ausgerichtet. Das Höhenmaß der Festschaltstücke wird durch das klemmend wirkende Stabilisierungselement mit großer Genauigkeit eingestellt. Die beiden Schenkel der Festschaltstücke werden auseinander gehalten. Zudem werden Luft- und Kriechstrecken zwischen den Kammern sowie nach außen eingehalten.The stabilizing element according to the invention, in particular for a circuit breaker, is supported on the intermediate and outer β-walls of the lower part. The wall deflection of the lower part and thus also of the upper part is thereby reduced. According to the invention it is provided to fix the switching pieces on the stabilizing element, which is then in turn fitted in the upper and lower part. The assembly is unambiguous and assemblies oriented. It is also advantageous that the convective cooling channel is made possible for cooling the flow path. Although the order of assembly must be changed, however, the walls of the lower part are advantageously aligned with one another by the impressions of the stabilizing element. The height dimension of the fixed switching pieces is adjusted by the clamping acting stabilizing element with great accuracy. The two legs of the Festschaltstücke be kept apart. In addition, air and creepage distances between the chambers and outward are maintained.

Das Stabilisierungselement ist vorzugsweise aus Kunststoff ausgebildet, insbesondere aus PA66. Die Montage sieht vor, dass auf die Stabilisierungselemente die Festschaltstücke und die Auslösebaugruppe angeklipst werden. Danach erfolgt die Montage ins Oberteil. Entsprechende Gegenkonturen sorgen für einen sicheren Halt. Das gesamte Oberteil wird dann auf das Unterteil aufgesetzt. Die beiden Stabilisierungselemente legen sich auch hier in entsprechende Gegenkonturen des Gehäuses. Diese dienen gleichzeitig der Einhaltung der Luft- und Kriechstrecken. Die Stabilisierungselemente werden dann von außen beidseitig vorzugsweise mit einer Schraube an das Unterteil fixiert.The stabilizing element is preferably made of plastic, in particular PA66. The assembly envisages clipping on the stabilizing elements, the Festschaltstücke and the trigger assembly. Then the assembly takes place in the upper part. Corresponding counter contours ensure a secure hold. The entire top is then on the Lower part attached. The two stabilizing elements lie here in corresponding counter contours of the housing. These serve at the same time to maintain the clearances and creepage distances. The stabilizing elements are then fixed from the outside on both sides, preferably with a screw to the lower part.

Claims (8)

Leistungsschalter mit einem ersten Schaltgerätebereich, in welchem eine Löschkammervorrichtung und eine Kontaktschiebervorrichtung mit beweglichen Schaltstücken angeordnet sind, welche gegenüber liegend zu Festschaltstücken positioniert sind und einem zweiten Schaltgerätebereich, in welchem eine Auslösebaugruppe (18) aus einem Kurzschlussauslöser und einem Überlastauslöser angeordnet sind, dadurch gekennzeichnet, dass die Festschaltstücke (14) auf mindestens einem der Gehäusestabilisierung im Auslösefall dienenden Stabilisierungselement (1) aufgesteckt sind.Circuit breaker having a first switchgear area in which a quenching chamber device and a contact slide device are arranged with movable contact pieces, which are positioned opposite to Festschaltstücken and a second switchgear area, in which a trigger assembly (18) of a short-circuit release and an overload release are arranged, characterized in that the fixed contact pieces (14) are plugged onto at least one stabilization element (1) serving to stabilize the housing in the event of activation. Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, dass das Stabilisierungselement (1) in drei nebeneinander angeordnete Teilbereiche (2,3,4) unterteilt ist.Circuit breaker according to claim 1, characterized in that the stabilizing element (1) is subdivided into three juxtaposed partial regions (2, 3, 4). Leistungsschalter nach Anspruch 2, dadurch gekennzeichnet, dass jeder Teilbereich (2,3,4) jeweils zwei sich gegenüber liegende Führungsflächen (5,6) aufweist, an welche sich gegenüber liegende Nasen (8) angeordnet sind.Circuit breaker according to Claim 2, characterized in that each subregion (2, 3, 4) has in each case two guide surfaces (5, 6) lying opposite one another, against which opposing lugs (8) are arranged. Leistungsschalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zwischen den Teilbereichen (2) und (3) beziehungsweise (3) und (4) Fixierungsstrukturen (9) angeordnet sind, die derart ausgebildet sind, dass sie in Gegenkonturen (20,22) des Leistungsschalters positionsstabil eingreifen.Circuit breaker according to one of the preceding claims, characterized in that between the sub-areas (2) and (3) or (3) and (4) fixing structures (9) are arranged, which are designed such that they in counter contours (20,22) of the circuit breaker position stable intervene. Leistungsschalter nach Anspruch 4, dadurch gekennzeichnet, dass die Fixierungsstrukturen (9) U-förmig ausgebildet sind mit zwei parallel zueinander ausgebildeten Schenkeln (10,11) und einem Übergangsbereich (12).Circuit breaker according to claim 4, characterized in that the fixing structures (9) are U-shaped with two mutually parallel legs (10,11) and a transition region (12). Leistungsschalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Stabilisierungselemente (1) am Gehäuse verschraubt sind.Circuit breaker according to one of the preceding claims, characterized in that the stabilizing elements (1) are screwed to the housing. Leistungsschalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Stabilisierungselement (1) aus Kunststoff ausgebildet ist.Circuit breaker according to one of the preceding claims, characterized in that the stabilizing element (1) is formed from plastic. Leistungsschalter nach Anspruch 7, dadurch gekennzeichnet, dass der Kunststoff PA66 ist.The circuit breaker according to claim 7, characterized in that the plastic is PA66.
EP11182090.8A 2011-09-21 2011-09-21 Circuit breaker with optimised housing stabilisation, in particular at high switching capacities Not-in-force EP2573786B1 (en)

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Application Number Priority Date Filing Date Title
EP11182090.8A EP2573786B1 (en) 2011-09-21 2011-09-21 Circuit breaker with optimised housing stabilisation, in particular at high switching capacities

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Application Number Priority Date Filing Date Title
EP11182090.8A EP2573786B1 (en) 2011-09-21 2011-09-21 Circuit breaker with optimised housing stabilisation, in particular at high switching capacities

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01286226A (en) * 1988-05-12 1989-11-17 Matsushita Electric Works Ltd Circuit breaker
JPH0512975A (en) * 1991-06-28 1993-01-22 Fuji Electric Co Ltd Circuit breaker
EP0903762A2 (en) * 1997-09-23 1999-03-24 Siemens Energy & Automation, Inc. Multi-part circuit breaker housing
WO2001033595A1 (en) 1999-10-29 2001-05-10 Moeller Gmbh Electric safety switch device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01286226A (en) * 1988-05-12 1989-11-17 Matsushita Electric Works Ltd Circuit breaker
JPH0512975A (en) * 1991-06-28 1993-01-22 Fuji Electric Co Ltd Circuit breaker
EP0903762A2 (en) * 1997-09-23 1999-03-24 Siemens Energy & Automation, Inc. Multi-part circuit breaker housing
WO2001033595A1 (en) 1999-10-29 2001-05-10 Moeller Gmbh Electric safety switch device

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