EP1052665B1 - Short-circuiter - Google Patents

Short-circuiter Download PDF

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Publication number
EP1052665B1
EP1052665B1 EP00107216A EP00107216A EP1052665B1 EP 1052665 B1 EP1052665 B1 EP 1052665B1 EP 00107216 A EP00107216 A EP 00107216A EP 00107216 A EP00107216 A EP 00107216A EP 1052665 B1 EP1052665 B1 EP 1052665B1
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EP
European Patent Office
Prior art keywords
short
circuiter
centring
insulating
bar
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.)
Expired - Lifetime
Application number
EP00107216A
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German (de)
French (fr)
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EP1052665A2 (en
EP1052665A3 (en
Inventor
Lutz Thilker
Wolfgang Erven
Albert Zacharias
Thomas Daube
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Eaton Industries GmbH
Original Assignee
Moeller GmbH
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Publication date
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Publication of EP1052665A2 publication Critical patent/EP1052665A2/en
Publication of EP1052665A3 publication Critical patent/EP1052665A3/en
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Publication of EP1052665B1 publication Critical patent/EP1052665B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
    • H01H39/004—Closing switches

Definitions

  • the invention relates to a short-circuiter according to the preamble of claim 1.
  • a short-circuiter which comprises a housing Insulating material which is connected to the conductor section and having a gas generator as a pressure element.
  • the object of the invention is a short-circuiter according to the preamble of Claim 1, which is compact, has a good piston guide and no explosive device needed
  • the object 1 of the invention is characterized by the characterizing features of Claim 1, while in the dependent claims particularly advantageous Developments of the invention are characterized.
  • Fig. 1 shows the ready to connect short-circuiting device 23 with three flat side by side arranged connecting rails 3 in the form of flat rails with corresponding Connecting holes 15, as they are common in the low-voltage plant.
  • the middle connecting rail 3 is at the end, or at the opposite end of Connection holes 15, electrically connected to a connecting rail 2, wherein the connecting rail 2 in the non-triggered state of the connecting rails 3, is isolated.
  • the rail assembly is E-shaped.
  • connecting rails 3 At the ends of the connecting rails 3 are two short-circuiting units 16, 17 with each arranged on a gas generator drive nitrocellulose-based, as in Airbags or Gurtstraffem is used.
  • the connecting rails 3, the connecting rail 2 and others described later Insulating pieces are arranged in a sandwich-like E-shaped package.
  • the short-circuiting units 16 and 17 Upon ignition of the short-circuiting units 16 and 17 creates a three-pole short circuit, which deletes an arc within a millisecond.
  • the short-circuiting units 16 and 17 are controlled by a Ausreteelektonik, which is provided with fast current and light sensors for arc detection. The control can be done with any type of sensors. Similarly, the short-circuiter can be used to protect consumers and equipment in case of short circuit.
  • FIG. 2 shows a sectional view of the short-circuiting unit
  • FIG. 3 an enlargement shows.
  • the short-circuiting unit 16 or 17 consists of a gas generator 6, an encapsulation 18 made of insulating material for the gas generator 6 with a union nut, not shown.
  • the gas generator 6 is embedded gas-tight in the enclosure 18.
  • the connecting rails 3 are embedded in a lower part 9 of insulating material and screwed to this part.
  • the lower part 9 has depressions 19, which have approximately the same depth as the thickness of the connecting rails 3.
  • openings 20 for the passage of the connecting rails are arranged, as can be seen in Fig. 1.
  • mounting flanges 21 are formed with mounting holes 22, which are provided for fastening the short-circuiting device 23 in a switchgear.
  • the two outer connecting rails are provided in the region of the short-circuiting units 16, 17 with a connecting rail bore 24, which have a phase 25 for a centering element 1.
  • a connecting rail bore 24 which have a phase 25 for a centering element 1.
  • the lower part 9 is provided with a lower part bore 26 which has a slightly larger diameter than the connecting rail bore 24.
  • a thin Isollerfolie 27 which is wider than the connecting rail width and has a foil hole, through that a center element 1 can be used.
  • the short-circuiter has a centering element 1 made of insulating material for centering of a connecting rail 3 with a connecting rail 2.
  • the centering element 1 has an insulating membrane 4 which is pierced upon ignition of the pressure element 6 by a short-circuiting piston 5 or centering element.
  • an insulating film 27th is arranged, which has a foil hole which is larger than the diameter of the Short-circuiting piston 5 and in which the Zentierelement 1 can be used.
  • the centering part 1 consists of an annular sleeve 11 which is larger than the Diameter of the short-circuiting piston 5 is.
  • the centering part 1 has a on the sleeve 11 radially outwardly molded insulating collar.
  • the insulating membrane 4 is provided with a predetermined breaking point 29, as shown in Fig. 3rd is shown.
  • a holding part 7 has a chimney-like first area 30, in which the Gas generator 6 is held.
  • this first region 30 is a Vorvolumen 31 in the Sort of a chimney shaft arranged.
  • the gas generator 6 is embedded in the upper part of the first region in a cylindrical receptacle 32, which has a larger diameter than the region of the pilot volume 31.
  • the first region is provided with a holding phase 33, at which the gas generator 6 is supported and pressed against it by a union nut, not shown in detail, similar to that shown in DE 19746815 (FIG. 3, reference numeral 13). With the reference numeral 34, the thread required for this purpose is indicated.
  • the pre-volume 31 is about 1 cm 3 , the gas generator 6 is optimized for this volume.
  • the second region 35 is provided for the support and insulation of the connecting rail 2 and, like an insulating jacket, is slipped over the connecting rail 2 and connected thereto by screw connections 36.
  • the connecting rail 2 is relatively high.
  • the height is about two-thirds of the width, so that the short-circuiting piston 5 can be almost completely embedded in the connecting rail.
  • a round collar is formed, which in a Through hole 38 of the connecting rail 2 protrudes, wherein the Short-circuiting piston 5 is arranged in this through hole 38.
  • the second region 35 extends up to the connecting rails 3.
  • a rectangular third area 40 such as a screen, which insulates the connecting bars 3 in an insulating manner and almost reaches the housing dimension.
  • the lower part 9 and the connecting rails 3 form with the transverse connecting rail 2 and the holding part 7 a sandwich-like package.
  • the hood 10 is arranged around the third area 40. It forms together with the package a housing in which the connectors and the lines are arranged protected for gas generators. The connectors are located directly under the hood 10 (not shown), so they are not protected against accidental withdrawal.
  • the hood 10 is further provided with a grommet and strain relief for the gas generator line.
  • the middle connecting rail 3 is, as already described, electrically connected to the connecting rail 2 to a short circuit between the two external phases.
  • the short-circuiting piston 5 is guided and held in a connecting rail 2, wherein the gas generator 6 in the pre-volume 31 exhibiting holding part 7 from Insulating material is embedded, which is attached directly to the busbar 2.
  • the short-circuiting piston 5 is at the one end of the holding part 7 and on the held at the other end of a centering element 1 of insulating material, wherein the Centering element 1 between the connecting rail 2 and a connecting rail. 3 is arranged.
  • the centering part 1 consists of a sleeve 11, an insulating membrane 4 with the Predetermined breaking point 29 and one formed on the sleeve 11 radially outwardly Insulating collar.
  • the pre-volume 31 is about 1 cm 3 , wherein the gas pressure of the gas generator is at least 500 bar.
  • the short-circuiter has at least one lower part 9 made of insulating material, in which the Connecting rails 3 are embedded and secured, i. that also two parts or two housings may be present, each having a gas generator unit 16,17 exhibit.
  • the holding part 7 is made entirely of insulating material.
  • the connecting rail 2 is in embedded and secured to the holding part 7, wherein the lower part 9 with the holding part. 7 are fastened such that at least one insulating short-circuiter housing is formed.
  • the holding part 7 is provided with a hood 10.
  • the short-closing piston 6 has a cylindrical region 41 and a slightly conical region 42 at the front.
  • the connecting rail bore 24 and the through hole 38 of the connecting rail 2 are precisely aligned.
  • a through hole is created, which is interrupted only by the insulating membrane 4.
  • the short-circuiting piston 6 can unhinderedly contact the connection rail until it settles there, because either the connection rail bore is likewise conical or the diameter is smaller than the cylindrical region 41.
  • the short-circuiting piston 6 is only removed by the very thin insulating membrane, resulting in a very short switching time.
  • the centering element 1 acts like a thimble-like insulating cap which holds the short-circuiting piston 6.
  • the invention is primarily specified for use as a central protection organ in Portable and stationary power distribution systems, both in Point distributor e.g. Main distributor, as well as in line distributors e.g. Busbar trunking in low, medium and high voltage engineering.
  • the invention can also be considered decentralized protection organ e.g. in battery, emergency power, compensation, and railway installations are used.
  • the basic principle is based on the fact that a gas generator, by a defined Ignition current is activated in a very short time a defined gas volume delivers. Of the Space in which the gas volume develops is sufficiently dense and firm, so that a pressure builds up to 900 bar. The pressure is used as a drive for a Used closing.
  • the conductors are for a short circuit current of over 100kA over a period of at least 500 ms.

Abstract

A short-circuiting device, with a short-circuiting piston (5) driven by a gas generator (6) for electrically connecting a terminal bar (3) to a connection bar (2), is new. A short-circuiting device has a short-circuiting piston (5) which is guided and retained in a connection bar (2) and which is driven, for electrical connection of a terminal bar (3) to the connection bar (2), by a gas generator (6) embedded in an insulating holder (7) which has a front space (31) and which is connected to the connection bar (2).

Description

Die Erfindung betrifft ein Kurzschließer nach dem Oberbegriff des Anspruches 1.The invention relates to a short-circuiter according to the preamble of claim 1.

Aus der DE 94 19 141 ist ein Kurzschließer mit Kurzschließertpatronen bekannt, der ein zylindrisches Unterteil aus Kupfer aufweist, in dem ein Kurzschließerbolzen und ein Sprengsatz integriert sind. Nachteilig bei dieser Lösung ist, daß ein Kurzschließer mit einer derartigen Patrone relativ groß ist, der Bolzen ungenau geführt wird und ein aus bekannten Gründen nachteiliger Sprengsatz vorgesehen ist.From DE 94 19 141 a short-circuiter with Kurzschließertpatronen is known, the a cylindrical lower part made of copper, in which a short-circuiting bolt and an explosive device are integrated. The disadvantage of this solution is that a short-circuiter with such a cartridge is relatively large, the bolt is guided inaccurately and a is provided for known reasons disadvantageous explosive device.

Aus der DE 197 12 387 ist ein Kurzschließer bekannt, der ein Gehäuse aus Isoliermaterial aufweist, das mit dem Stromleiterabschnitt verbunden ist und der einen Gasgenerator als Druckelement aufweist.From DE 197 12 387 a short-circuiter is known which comprises a housing Insulating material which is connected to the conductor section and having a gas generator as a pressure element.

Aufgabe der Erfindung ist es, ein Kurzschließer nach dem Oberbegriff des Anspruches 1 zu schaffen, der kompakt ist, eine gute Kolbenführung aufweist und kein Sprengsatz benötigtThe object of the invention is a short-circuiter according to the preamble of Claim 1, which is compact, has a good piston guide and no explosive device needed

Die Aufgabe 1 der Erfindung wird durch die kennzeichnenden Merkmale des Anspruches 1 gelöst, während in den Unteransprüchen besonders vorteilhafte Weiterbildungen der Erfindung gekennzeichnet sind.The object 1 of the invention is characterized by the characterizing features of Claim 1, while in the dependent claims particularly advantageous Developments of the invention are characterized.

Anhand der Zeichnung, in der ein Ausführungsbeispiel dargestellt ist, sollen die Erfindung, weitere Ausgestaltungen und Verbesserungen der Erfindung und weitere Vorteile näher beschrieben und erläutert werden. Reference to the drawing, in which an embodiment is shown, should the Invention, further refinements and improvements of the invention and others Advantages are described and explained in detail.

Es zeigt:

Fig. 1
eine perspektivische auseinandergezogene Darstellung des Kurzschließers,
Fig. 2
eine Schnittdarstellung des Kurzschließers,
Fig. 3
eine vergrößerte Schnittdarstellung,
Fig. 4
eine perspektivische auseinandergezogene Darstellung des Kurzschließerkolbens, des Zentrierelementes und der Isolierfolie von unten und
Fig. 5
eine perspektivische auseinandergezogene Darstellung des Kurzschließerkolbens, des Zentrierelementes und der Isolierfolie von oben.
It shows:
Fig. 1
a perspective exploded view of the short-circuiter,
Fig. 2
a sectional view of the short-circuiter,
Fig. 3
an enlarged sectional view,
Fig. 4
a perspective exploded view of the short-circuiting piston, the centering element and the insulating film from below and
Fig. 5
a perspective exploded view of the short-circuiting piston, the centering element and the insulating film from above.

Die Fig. 1 zeigt den anschlußfertigen Kurzschließer 23 mit drei flach nebeneinander angeordneten Anschlußschienen 3 in Form von Flachschienen mit entsprechenden Anschlußbohrungen 15, wie sie in dem Niederspannungs-Anlagenbau üblich sind.Fig. 1 shows the ready to connect short-circuiting device 23 with three flat side by side arranged connecting rails 3 in the form of flat rails with corresponding Connecting holes 15, as they are common in the low-voltage plant.

Die mittlere Anschlußschiene 3 ist am Ende, bzw. am gegenüberliegenden Ende der Anschlußbohrungen 15, mit einer Verbindungsschiene 2 elektrisch verbunden, wobei die Verbindungsschiene 2 im nichtausgelösten Zustand von den Anschlußschienen 3, isoliert ist. Die Schienenanordnung ist E-förmig.The middle connecting rail 3 is at the end, or at the opposite end of Connection holes 15, electrically connected to a connecting rail 2, wherein the connecting rail 2 in the non-triggered state of the connecting rails 3, is isolated. The rail assembly is E-shaped.

An den Enden der Anschlußschienen 3 sind zwei Kurzschließereinheiten 16, 17 mit jeweils einem Gasgeneratorantrieb auf Nitrocellulose-Basis angeordnet, wie er bei Airbags oder Gurtstraffem verwendet wird. At the ends of the connecting rails 3 are two short-circuiting units 16, 17 with each arranged on a gas generator drive nitrocellulose-based, as in Airbags or Gurtstraffem is used.

Die Anschlußschienen 3, die Verbindungsschiene 2 und weitere später beschriebene Isolierteile sind zu einem sandwichartigen E-förmigen Paket angeordnet.The connecting rails 3, the connecting rail 2 and others described later Insulating pieces are arranged in a sandwich-like E-shaped package.

Bei Zündung der Kurzschließereinheiten 16 und 17 entsteht ein dreipoliger Kurzschluß, der innerhalb einer Millisekunde einen Störlichtbogen löscht.
Die Kurzschließereinheiten 16 und 17 werden durch eine Auswerteelektonik angesteuert, die mit schnellen Strom- und Lichtsensoren zur Störlichtbogenerkennung versehen ist. Die Ansteuerung kann mit jeder Art von Sensoren erfolgen. Ebenso ist der Kurzschließer zum Schutz von Verbrauchern und Betriebsmittel bei Kurzschluß einsetzbar.Upon ignition of the short-circuiting units 16 and 17 creates a three-pole short circuit, which deletes an arc within a millisecond.
The short-circuiting units 16 and 17 are controlled by a Auswerteelektonik, which is provided with fast current and light sensors for arc detection. The control can be done with any type of sensors. Similarly, the short-circuiter can be used to protect consumers and equipment in case of short circuit.

In der Fig. 2 ist eine Schnittdarstellung der Kurzschließereinheit gezeigt, wobei Fig. 3 eine Vergrößerung zeigt.FIG. 2 shows a sectional view of the short-circuiting unit, FIG. 3 an enlargement shows.

Die Kurzschließereinheit 16 bzw. 17 besteht aus einem Gasgenerator 6, einer Kapselung 18 aus Isolierstoff für den Gasgenerator 6 mit einer nicht dargestellten Überwurfmutter.
Der Gasgenerator 6 ist in der Kapselung 18 gasdicht eingebettet.The short-circuiting unit 16 or 17 consists of a gas generator 6, an encapsulation 18 made of insulating material for the gas generator 6 with a union nut, not shown.
The gas generator 6 is embedded gas-tight in the enclosure 18.

Die Anschlußschienen 3 sind in einem Unterteil 9 aus Isolierstoff eingebettet und mit diesem Teil verschraubt. Das Unterteil 9 weist Einsenkungen 19, die etwa die gleiche Tiefe aufweisen wie die Dicke der Anschlußschienen 3. An einer Seite des Unterteils 9 sind Öffnungen 20 für die Durchführung der Anschlußschienen angeordnet, wie in Fig. 1 zu sehen ist.
An beiden Seiten des Unterteils 9, d.h. links und rechts von den Anschlußschienen 3 sind Befestigungsflansche 21 mit Befestigungsbohrungen 22 angeformt, die zur Befestigung des Kurzschließers 23 in einer Schaltanlage vorgesehen sind. The connecting rails 3 are embedded in a lower part 9 of insulating material and screwed to this part. The lower part 9 has depressions 19, which have approximately the same depth as the thickness of the connecting rails 3. On one side of the lower part 9 openings 20 for the passage of the connecting rails are arranged, as can be seen in Fig. 1.
On both sides of the lower part 9, ie left and right of the connecting rails 3 mounting flanges 21 are formed with mounting holes 22, which are provided for fastening the short-circuiting device 23 in a switchgear.

Die beiden äußeren Anschlußschienen sind im Bereich der Kurzschließereinheiten 16,17 mit einer Anschlußschienenbohrung 24 versehen, die eine Phase 25 für ein Zentrierelement 1 aufweisen.
Direkt unterhalb der Anschlußschienenbohrung 24 ist das Unterteil 9 mit einer Unterteilbohrung 26 versehen, die einen etwas größerer Durchmesser als die Anschlußschienenbohrung 24 aufweist.The two outer connecting rails are provided in the region of the short-circuiting units 16, 17 with a connecting rail bore 24, which have a phase 25 for a centering element 1.
Directly below the connecting rail bore 24, the lower part 9 is provided with a lower part bore 26 which has a slightly larger diameter than the connecting rail bore 24.

Auf der rechten und der linken Anschlußschiene 3 liegt eine dünne Isollerfolie 27 auf, die breiter als die Anschlußschienenbreite ist und ein Folienloch aufweist, durch das ein Zentrienelement 1 eingesetzt werden kann .On the right and left terminal bar 3 is a thin Isollerfolie 27, which is wider than the connecting rail width and has a foil hole, through that a center element 1 can be used.

Der Kurzschließer weist ein Zentrierelement 1 aus Isoliermaterial zur Zentrierung von einer Anschlußschiene 3 mit einer Verbindungsschiene 2 auf.
Das Zentrierelement 1 weist eine Isoliermembran 4 auf, die bei Zündung des Druckelements 6 von einem Kurzschließerkolben 5 bzw. Zentierelement durchstoßen wird.The short-circuiter has a centering element 1 made of insulating material for centering of a connecting rail 3 with a connecting rail 2.
The centering element 1 has an insulating membrane 4 which is pierced upon ignition of the pressure element 6 by a short-circuiting piston 5 or centering element.

Zwischen der Anschlußschiene 3 und der Stromschiene 2 eine Isolierfolie 27 angeordnet ist, die ein Folienloch aufweist, das größer als der Durchmesser des Kurzschließerkolbens 5 ist und in das das Zentierelement 1 eingesetzt werden kann.Between the terminal rail 3 and the busbar 2, an insulating film 27th is arranged, which has a foil hole which is larger than the diameter of the Short-circuiting piston 5 and in which the Zentierelement 1 can be used.

Das Zentrierteil 1 besteht aus einer ringförmigen Hülse 11, die größer als der Durchmesser des Kurzschließerkolbens 5 ist, besteht. Das Zentrierteil 1 weist einen an der Hülse 11 radial nach außen angeformten Isolierkragen auf.The centering part 1 consists of an annular sleeve 11 which is larger than the Diameter of the short-circuiting piston 5 is. The centering part 1 has a on the sleeve 11 radially outwardly molded insulating collar.

Die Isoliermembrane 4 ist mit einer Sollbruchstelle 29 versehen, wie in Fig. 3 dargestellt ist. The insulating membrane 4 is provided with a predetermined breaking point 29, as shown in Fig. 3rd is shown.

Ein Halteteil 7 weist einen kaminartigen ersten Bereich 30 auf, in dem der Gasgenerator 6 gehalten ist. In diesem ersten Bereich 30 ist ein Vorvolumen 31 in der Art eines Kaminschachtes angeordnet.A holding part 7 has a chimney-like first area 30, in which the Gas generator 6 is held. In this first region 30 is a Vorvolumen 31 in the Sort of a chimney shaft arranged.

Der Gasgenerator 6 ist in dem oberen Teil des ersten Bereichs in einer zylindrischen Aufnahme 32 eingebettet, die einen größeren Durchmesser aufweist als der Bereich des Vorvolumens 31.
Der erste Bereich ist mit einer Haltephase 33 versehen, an der sich des Gasgenerator 6 abstüzt und gegen diese durch eine nicht näher gezeigte Überwurfmutter gedrückt wird, ähnlich wie in der DE 19746815 (Fig. 3, Bezugszeichen 13) gezeigt ist. Mit dem Bezugszeichen 34 ist das hierfür erforderliche Gewinde angedeutet.The gas generator 6 is embedded in the upper part of the first region in a cylindrical receptacle 32, which has a larger diameter than the region of the pilot volume 31.
The first region is provided with a holding phase 33, at which the gas generator 6 is supported and pressed against it by a union nut, not shown in detail, similar to that shown in DE 19746815 (FIG. 3, reference numeral 13). With the reference numeral 34, the thread required for this purpose is indicated.

Das Vorvolumen 31 beträgt ca. 1 cm3 , wobei der Gasgenerator 6 für dieses Volumen optimiert ist.The pre-volume 31 is about 1 cm 3 , the gas generator 6 is optimized for this volume.

Der zweite Bereich 35 ist für die Halterung und Isolierung der Verbindungsschiene 2 vorgesehen und ist wie ein Isoliermantel über der Verbindungschiene 2 übergestülpt und mit dieser durch Schraubenverbindungen 36 verbunden.
Die Verbindungsschiene 2 ist relativ hoch. Die Höhe beträgt etwa zwei Drittel der Breite, damit der Kurzschließerkolben 5 nahezu vollständig in der Verbindungsschiene eingebettet werden kann.The second region 35 is provided for the support and insulation of the connecting rail 2 and, like an insulating jacket, is slipped over the connecting rail 2 and connected thereto by screw connections 36.
The connecting rail 2 is relatively high. The height is about two-thirds of the width, so that the short-circuiting piston 5 can be almost completely embedded in the connecting rail.

In einem zweiten Bereich 35 ist ein runder Kragen angeformt, der in eine Durchgangsbohrung 38 der Verbindungsschiene 2 hineinragt, wobei der Kurzschließerkolben 5 in dieser Durchgangsbohrung 38 angeordnet ist.In a second region 35, a round collar is formed, which in a Through hole 38 of the connecting rail 2 protrudes, wherein the Short-circuiting piston 5 is arranged in this through hole 38.

Durch den Kragen sind die Gase gasdicht eingeschlossen, wobei auch eine Dichtung an hierfür vorgesehenen Rillen 39 eingesetzt werden kann.
Der zweite Bereich 35 erstreckt sich bis zu den Anschlußschienen 3. By the collar, the gases are enclosed gas-tight, whereby a seal can be used at grooves 39 provided for this purpose.
The second region 35 extends up to the connecting rails 3.

Um den zweiten Bereich 35 ist ein rechteckförmiger dritter Bereich 40, wie ein Schirm, angeordnet, welcher die Anschlußschienen 3 isolierend abschirmt und fast die Gehäuseabmessung erreicht.
Das Unterteil 9 und die Anschlußschienen 3 bilden mit der querliegenden Verbindungsschiene 2 und dem Halteteil 7 ein sandwichartiges Paket.
Über diesem Paket ist um den dritten Bereich 40 die Haube 10 angeordnet. Sie bildet zusammen mit dem Paket ein Gehäuse, in dem die Anschlußstecker und die Leitungen für Gasgeneratoren geschützt angeordnet sind. Die Anschlußstecker sind direkt unter der Haube 10 angeordnet (nicht dargestellt), damit sie nicht gegen ein ungewolltes herausziehen geschützt sind. Die Haube 10 ist weiterhin mit einer Kabeldurchführung und Zugentlastung für die Gasgeneratorleitung versehen.Arranged around the second area 35 is a rectangular third area 40, such as a screen, which insulates the connecting bars 3 in an insulating manner and almost reaches the housing dimension.
The lower part 9 and the connecting rails 3 form with the transverse connecting rail 2 and the holding part 7 a sandwich-like package.
About this package, the hood 10 is arranged around the third area 40. It forms together with the package a housing in which the connectors and the lines are arranged protected for gas generators. The connectors are located directly under the hood 10 (not shown), so they are not protected against accidental withdrawal. The hood 10 is further provided with a grommet and strain relief for the gas generator line.

Quer über den beiden äußeren Anschlußschienen 3 ist jeweils eine dünne Isolierfolie 27 zur Isolation der Verbindungsschiene 2 mit den beiden äußeren Anschlußschienen 3 angeordnet. Die mittlere Anschlußschiene 3 ist, wie bereits beschrieben, elektrisch mit der Verbindungsschiene 2 verbunden, um einen Kurzschluß zwischen den beiden äußeren Phasen herbeizuführen.Across the two outer connecting rails 3 is a thin insulating film 27 for the isolation of the connecting rail 2 with the two outer connecting rails 3 arranged. The middle connecting rail 3 is, as already described, electrically connected to the connecting rail 2 to a short circuit between the two external phases.

Der Kurzschließerkolben 5 ist in einer Verbindungsschiene 2 geführt und gehalten, wobei der Gasgenerator 6 in dem ein Vorvolumen 31 aufweisendes Halteteil 7 aus Isoliermaterial eingebettet ist, das direkt mit der Stromschiene 2 befestigt ist.The short-circuiting piston 5 is guided and held in a connecting rail 2, wherein the gas generator 6 in the pre-volume 31 exhibiting holding part 7 from Insulating material is embedded, which is attached directly to the busbar 2.

Der Kurzschließerkolben 5 wird an dem einen Ende von dem Halteteil 7 und an dem anderen Ende von einem Zentrierelement 1 aus Isoliermaterial gehalten, wobei das Zentrierelement 1 zwischen der Verbindungsschiene 2 und einer Anschlußschiene 3 angeordnet ist.The short-circuiting piston 5 is at the one end of the holding part 7 and on the held at the other end of a centering element 1 of insulating material, wherein the Centering element 1 between the connecting rail 2 and a connecting rail. 3 is arranged.

Das Zentrierteil 1 besteht aus einer Hülse 11, einer Isoliermembrane 4 mit der Sollbruchstelle 29 und einem an der Hülse 11 radial nach außen angeformten Isolierkragen. The centering part 1 consists of a sleeve 11, an insulating membrane 4 with the Predetermined breaking point 29 and one formed on the sleeve 11 radially outwardly Insulating collar.

Das Vorvolumen 31 beträgt etwa 1 cm3, wobei der Gasdruck des Gasgenerators mindestens 500 bar beträgt.The pre-volume 31 is about 1 cm 3 , wherein the gas pressure of the gas generator is at least 500 bar.

Der Kurzschließer weist mindestens einen Unterteil 9 aus Isolierstoff auf, in dem die Anschlußschienen 3 eingebettet und befestigt sind, d.h. daß auch zwei Unterteile bzw. zwei Gehäuse vorhanden sein können, die jeweils eine Gasgeneratoreinheit 16,17 aufweisen.The short-circuiter has at least one lower part 9 made of insulating material, in which the Connecting rails 3 are embedded and secured, i. that also two parts or two housings may be present, each having a gas generator unit 16,17 exhibit.

Das Halteteil 7 besteht vollständig aus Isoliermaterial. Die Verbindungsschiene 2 ist in dem Halteteil 7 eingebettet und befestigt, wobei das Unterteil 9 mit dem Halteteil 7 derart befestigt sind, daß mindestens ein isolierendes Kurzschließergehäuse entsteht. Das Halteteil 7 ist mit einer Haube 10 versehen.The holding part 7 is made entirely of insulating material. The connecting rail 2 is in embedded and secured to the holding part 7, wherein the lower part 9 with the holding part. 7 are fastened such that at least one insulating short-circuiter housing is formed. The holding part 7 is provided with a hood 10.

Der Kurzschließerkolben 6 weist einen zylindrischen Bereich 41 und vorne einen leicht konischen Bereich 42.
Durch das Zentrierelement 1 sind die Anschlußschienenbohrung 24 und die Durchgangsbohrung 38 der Verbindungschiene 2 genau fluchtend.
Durch die Fase 25 der Verbindungsschiene 2 und die Anschlußschienenfase 43, in der die Hülse 11 liegt, wird eine durchgehende Bohrung geschaffen, die nur durch die Isoliermembrane 4 unterbrochen ist. Nach dem Abreißen der Isoliermembrane 4 kann der Kurzschließerkolben 6 ungehindert die Anschlußschiene kontaktieren, bis sich dieser dort festsetzt, weil entweder die Anschlußschienenbohrung ebenfalls konisch ist oder der Durchmesser kleiner ist als der zylindrische Bereich 41.The short-closing piston 6 has a cylindrical region 41 and a slightly conical region 42 at the front.
By the centering element 1, the connecting rail bore 24 and the through hole 38 of the connecting rail 2 are precisely aligned.
Through the chamfer 25 of the connecting rail 2 and the Anschlußschienenfase 43, in which the sleeve 11 is located, a through hole is created, which is interrupted only by the insulating membrane 4. After the insulation membrane 4 has been torn off, the short-circuiting piston 6 can unhinderedly contact the connection rail until it settles there, because either the connection rail bore is likewise conical or the diameter is smaller than the cylindrical region 41.

Der Kurzschließerkolben 6 ist lediglich um die sehr dünne Isoliermembran entfernt, was zu einer sehr kurzen Schaltzeit führt.
Das Zentrierelement 1 wirkt wie eine fingerhutartige Isolierkappe, die den Kurzschließerkolben 6 hält. The short-circuiting piston 6 is only removed by the very thin insulating membrane, resulting in a very short switching time.
The centering element 1 acts like a thimble-like insulating cap which holds the short-circuiting piston 6.

Die Erfindung spezifiziert sich vorrangig auf den Einsatz als zentrales Schutzorgan in ortsveränderlichen und stationären Energieverteilungsanlagen, sowohl in Punktverteiler z.B. Hauptverteiler, als auch in Linienverteilem z.B. Schienenverteiler in der Nieder-, Mittel-, und Hochspannungstechnik. Die Erfindung kann auch als dezentrales Schutzorgan z.B. in Batterie-, Notstrom-, Kompensations-, und Bahnanlagen eingesetzt werden.The invention is primarily specified for use as a central protection organ in Portable and stationary power distribution systems, both in Point distributor e.g. Main distributor, as well as in line distributors e.g. Busbar trunking in low, medium and high voltage engineering. The invention can also be considered decentralized protection organ e.g. in battery, emergency power, compensation, and Railway installations are used.

Das Grundprinzip beruht darauf, daß ein Gasgenerator, der durch einen definierten Zündstrom aktiviert wird, in sehr kurzer Zeit ein definiertes Gasvolumen liefert. Der Raum, in dem sich das Gasvolumen entwickelt ist ausreichend dicht und fest, so daß sich ein Druck bis 900 bar aufbaut. Der Druck wird als Antrieb für einen Schließvorgang genutzt. Die Leiter sind für einen Kurzschlußstrom von über 100kA über einen Zeitraum von mindestens 500 ms ausgelegt. The basic principle is based on the fact that a gas generator, by a defined Ignition current is activated in a very short time a defined gas volume delivers. Of the Space in which the gas volume develops is sufficiently dense and firm, so that a pressure builds up to 900 bar. The pressure is used as a drive for a Used closing. The conductors are for a short circuit current of over 100kA over a period of at least 500 ms.

Liste der BezugszeichenList of reference numbers

  • Zentrierelement 1Centering element 1
  • Verbindungsschiene 2Connecting rail 2
  • Anschlußschiene 3Connecting rail 3
  • Isoliermembran 4Insulating diaphragm 4
  • Kurzschließerkolben 5Short-circuiting piston 5
  • Druckelement 6Pressure element 6
  • Halteteil 7Holding part 7
  • Unterteil 9Lower part 9
  • Haube 10Hood 10
  • Hülse 11Sleeve 11
  • Anschlußbohrungen 15Connection holes 15
  • Kurzschließereinheiten 16, 17Short-circuiting units 16, 17
  • Kapselung 18Encapsulation 18
  • Einsenkungen 19Depressions 19
  • Öffnungen 20Openings 20
  • Befestigungsflansche 21Mounting flanges 21
  • Befestigungsbohrungen 22Mounting holes 22
  • Kurzschließer 23Short circuiter 23
  • Anschlußschienenbohrung 24Connecting rail bore 24
  • Fase 25Bevel 25
  • Unterteilbohrung 26Lower part bore 26
  • Isolierfolie 27 Insulating film 27
  • Sollbruchstelle 29Predetermined breaking point 29
  • erster Bereich 30first area 30
  • Vorvolumen 31Pre-volume 31
  • Aufnahme 32Recording 32
  • Haltephase 33Holding phase 33
  • Gewinde 34Thread 34
  • zweite Bereich 35second area 35
  • Schraubenverbindungen 36Screw connections 36
  • Durchgangsbohrung 38Through hole 38
  • Rillen 39Grooves 39
  • dritter Bereich 40third area 40
  • zylindrischen Bereich 41cylindrical area 41
  • konischen Bereich 42conical area 42
  • Anschlußschienenpfase 43Connecting rail socket 43

    • Claims (8)

    1. Short-circuiter (23) for an arcing fault protection apparatus for use in systems for distributing electrical power, having a compression element (6), terminal bars (3), a connecting bar (2) and a short-circuiter plunger (5), which is driven by the compression element, for the purpose of electrically connecting the terminal bars to the connecting bar, in which the short-circuiter plunger (5) is guided and held in a connecting bar (2), and a gas generator (6) is embedded as the compression element in a retaining part (7) which has an initial volume (31) and is made of insulating material, and in which the retaining part (7) is connected to the connecting bar (2).
    2. Short-circuiter according to Claim 1, characterized in that the short-circuiter plunger (5) is held at one end by the retaining part (7) and at the other end by a centring element (1) made of insulating material, in which the centring part (1) is arranged between the connecting bar (2) and a terminal bar (3).
    3. Short-circuiter according to Claim 2, characterized in that the centring part comprises a sleeve (11), an insulating membrane (4) having a weak point and an insulating collar, which is integrally formed radially on the outside of the sleeve (11).
    4. Short-circuiter according to one of the preceding claims, characterized in that the initial volume (31) is approximately 1 cm3 and the gas pressure of the gas generator (6) is at least 300 bar.
    5. Short-circuiter according to one of the preceding claims, characterized in that the short-circuiter (23) has at least one centring element (1) made of insulating material for the purpose of centring a terminal bar (3) with a connecting bar (2), and in that the centring element (1) has an insulating membrane (4), through which the short-circuit element (5) passes when the compression element (6) is triggered.
    6. Short-circuiter according to one of the preceding claims, characterized in that arranged between the terminal bar (3) and the connecting bar (2) is an insulating film (27) which has a film hole, which is larger than the diameter of the short-circuiter plunger (5), and in which the centring element (1) can be inserted.
    7. Short-circuiter according to one of the preceding claims, characterized in that the centring part (1) comprises an annular sleeve (11), which is larger than the diameter of the short-circuiter plunger (5), and in that the centring element (1) has an insulating collar, which is integrally formed radially on the outside of the sleeve (11).
    8. Short-circuiter according to one of the preceding claims, characterized in that the insulating membrane (4) is provided with a weak point (29).
    EP00107216A 1999-04-12 2000-04-01 Short-circuiter Expired - Lifetime EP1052665B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19916329A DE19916329A1 (en) 1999-04-12 1999-04-12 Short-circuiting device, for an arcing protection device in an electricity distribution system, has a short-circuiting piston driven by a gas generator for electrically connecting a terminal bar to a connection bar
    DE19916329 1999-04-12

    Publications (3)

    Publication Number Publication Date
    EP1052665A2 EP1052665A2 (en) 2000-11-15
    EP1052665A3 EP1052665A3 (en) 2002-01-16
    EP1052665B1 true EP1052665B1 (en) 2004-10-06

    Family

    ID=7904205

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00107216A Expired - Lifetime EP1052665B1 (en) 1999-04-12 2000-04-01 Short-circuiter

    Country Status (4)

    Country Link
    EP (1) EP1052665B1 (en)
    AT (1) ATE279016T1 (en)
    DE (2) DE19916329A1 (en)
    ES (1) ES2228324T3 (en)

    Cited By (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1806817A1 (en) 2006-01-09 2007-07-11 Luis Gonzalo Flores Losada Oil-immersed electrical equipment with a short-circuiting safety device
    DE102006030672A1 (en) * 2006-07-04 2008-01-10 Moeller Gmbh Electrical circuit breaker
    DE102006030671A1 (en) * 2006-07-04 2008-01-10 Moeller Gmbh Breaker short-O combination
    DE202007018606U1 (en) 2007-11-16 2009-02-19 Moeller Gmbh Short-circuit limiting device in a low-voltage system
    DE102009038209A1 (en) 2008-08-21 2010-02-25 Moeller Gmbh Limiting device for fault currents in an AC low-voltage system

    Families Citing this family (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP2034503B1 (en) 2007-09-05 2014-11-05 ABB Technology AG Low-voltage, medium-voltage or high-voltage switchgear assembly having a short-circuiting system
    US8395868B2 (en) 2008-11-14 2013-03-12 Eaton Industries Gmbh Short circuit limitation device in a low voltage system
    US8933360B2 (en) 2012-08-23 2015-01-13 Schneider Electric USA, Inc. Crowbar disconnect switch
    DE102013005783B4 (en) 2012-10-31 2019-06-13 DEHN + SÖHNE GmbH + Co. KG. Device for operating voltage-independent generation of a safe, low-resistance electrical short circuit
    WO2019114918A1 (en) * 2017-12-11 2019-06-20 Siemens Aktiengesellschaft Short-circuiter device

    Family Cites Families (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE9419141U1 (en) * 1994-11-29 1996-03-28 Kloeckner Moeller Gmbh Short-circuiter for extinguishing arcing faults for use in switchgear
    DE19712387B4 (en) * 1996-04-27 2005-12-08 Delphi Technologies, Inc., Troy Pyrotechnic switching element for electrical circuits
    DE19746815A1 (en) * 1997-10-23 1999-04-29 Kloeckner Moeller Gmbh Short-circuiter for arcing protection device
    DE19746809A1 (en) * 1997-10-23 1999-04-29 Kloeckner Moeller Gmbh Short-circuiter for arcing protection device
    DE19746813A1 (en) * 1997-10-23 1999-04-29 Kloeckner Moeller Gmbh Assembly method for short-circuiter for arcing protection device

    Cited By (9)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1806817A1 (en) 2006-01-09 2007-07-11 Luis Gonzalo Flores Losada Oil-immersed electrical equipment with a short-circuiting safety device
    DE102006030672A1 (en) * 2006-07-04 2008-01-10 Moeller Gmbh Electrical circuit breaker
    DE102006030671A1 (en) * 2006-07-04 2008-01-10 Moeller Gmbh Breaker short-O combination
    DE102006030671B4 (en) * 2006-07-04 2008-10-02 Moeller Gmbh Breaker short-O combination
    DE102006030672B4 (en) * 2006-07-04 2008-10-16 Moeller Gmbh Electrical circuit breaker
    DE202007018606U1 (en) 2007-11-16 2009-02-19 Moeller Gmbh Short-circuit limiting device in a low-voltage system
    DE102007055071B3 (en) * 2007-11-16 2009-07-09 Moeller Gmbh Short-circuit limiting device in a low-voltage system
    US8400740B2 (en) 2007-11-16 2013-03-19 Eaton Industries Gmbh Short-circuit limiting device in a low-voltage installation
    DE102009038209A1 (en) 2008-08-21 2010-02-25 Moeller Gmbh Limiting device for fault currents in an AC low-voltage system

    Also Published As

    Publication number Publication date
    EP1052665A2 (en) 2000-11-15
    DE50008055D1 (en) 2004-11-11
    EP1052665A3 (en) 2002-01-16
    ATE279016T1 (en) 2004-10-15
    ES2228324T3 (en) 2005-04-16
    DE19916329A1 (en) 2000-10-19

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