EP0189036B1 - Multiphase circuit breaker - Google Patents

Multiphase circuit breaker Download PDF

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Publication number
EP0189036B1
EP0189036B1 EP86100062A EP86100062A EP0189036B1 EP 0189036 B1 EP0189036 B1 EP 0189036B1 EP 86100062 A EP86100062 A EP 86100062A EP 86100062 A EP86100062 A EP 86100062A EP 0189036 B1 EP0189036 B1 EP 0189036B1
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EP
European Patent Office
Prior art keywords
automatic
contact piece
case
conductor
arc path
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
Application number
EP86100062A
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German (de)
French (fr)
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EP0189036A1 (en
Inventor
Paul Herma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT86100062T priority Critical patent/ATE45441T1/en
Publication of EP0189036A1 publication Critical patent/EP0189036A1/en
Application granted granted Critical
Publication of EP0189036B1 publication Critical patent/EP0189036B1/en
Expired legal-status Critical Current

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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
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor

Definitions

  • the invention relates to multi-pole circuit breakers made of assembled machines or poles, at least for an outer conductor, the machine having its own release, and for a center conductor, the machine being unlatched by the machine or machines for the outer conductor, without its own release, which leads to the opening of his contact.
  • a circuit breaker is such. B. from DE-A1-3 029 094 known.
  • Machines with their own trigger are also called protected machines or poles and machines without their own trigger are unprotected machines or unprotected poles.
  • line circuit breakers it is common practice to provide arc running aids.
  • blow loops can be formed in the power supply to the contact or Uchtbogeneinlauf Anlagen in the quenching plates through a power supply line arranged in front of the face of the quenching plates (DE-C-26 09 708).
  • Arc running aids can also be designed as a special guide for the gas flow, as a so-called flow (DE: P 33 11 052).
  • the invention is based on the finding that in the machine or pole for the center conductor, hereinafter referred to as the Mp conductor, the contact pieces are exposed to increased erosion because the forces of the arching aids open the contact of the Mp pole before unlatching via the machine or poles for the outer conductors.
  • the object of the invention is to avoid the increased erosion of the contact pieces of the MP machine in the case of multi-pole line protection shafts.
  • the solution to the described problem is that only in or in the machines for external conductors are arrangements for the contact with the current in the power supply for promoting the arching.
  • the arc is created in the machine for the Mp conductor compared to the others.
  • Poland delays, so that the unlatching of a machine for outer conductors, that is, a protected pole, takes place in good time before the current in the machine for the Mp conductor could lead to the opening of the not yet unlatched contact.
  • the erosion of this contact is significantly reduced, so that power restrictions in the use of the multi-pole circuit breaker or complex additional measures such as significantly increased contact forces or particularly durable contact pieces are unnecessary.
  • a supply line has a further development of the solution according to the invention with the following features:
  • the supply line is connected to the Uchtbogenlaufschiene behind the fixed contact piece in the Uchtbogenlaufraum.
  • the feed line seen in the direction of the arc running, is connected to the arc running rail on or in front of the fixed contact piece.
  • the multi-pole circuit breaker made of assembled machines or poles has at least one for an outer conductor, for example according to FIG. 1. It is assembled with an automatic machine according to one of FIGS. 2 to 4, that is to say one for the Mp conductor.
  • the automat for the Mp conductor can be arranged in front of or behind the plane of the drawing with reference to FIG. 1.
  • the automat for an outer conductor has its own trigger, a thermal and / or magnetic trigger below or to the side of the switch lock 1.
  • the automat for the Mp conductor according to FIG. 2 does not have its own trigger; it is also unlatched by a machine for the outer conductor if the latter is unlatched by a trigger.
  • the switch lock 1 of the machine unlatches for an outer conductor, its contact with the fixed contact piece 2 and the movable contact piece 3 is opened and via a coupling 4 the switch lock 1 of the machine according to FIG. 2 also unlatches, so that its contact with the fixed contact piece 2 and the movable contact piece 3 is opened.
  • the space for the magnetic release 10 and for the thermal release 11 is not populated.
  • the feed line 8 seen in the direction of arcing 6 is connected to the Uchtbogensburgschiene 7 before the fixed contact piece 2. Even so, there is no blow loop in the lead to the contact.
  • the supply line 8 is connected directly to the Uchtbogensburgschiene 7 in the vicinity of the terminal 12, so that here too no starting aid for the arc to be drawn between the fixed contact piece 2 and the movable contact piece 3 when opening of contact. Since the arc is on the unprotected machine, neither a start-up aid that could open the contacts too early nor a start-up aid is required.
  • the extinguishing plates can therefore also be omitted.
  • the illustration according to FIGS. 2 to 4 is then to be understood in such a way that only the shapes for inserting extinguishing plates are shown in the quenching chamber.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Control Of Eletrric Generators (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Breakers (AREA)

Abstract

1. Multipole circuit breaker consisting of assembled automatic devices or poles, at least for an outer conductor, in which case the automatic device is provided with its own tripping device, and for a central conductor, in which case the automatic device without its own tripping device is released by means of the automatic device or automatic devices for outer conductors, this resulting in the opening of a contact, characterised in that only in the automatic device or in the automatic devices for outer conductors, as the case may be, in the current supply (5) to the contact are arrangements formed for the stimulation of the arc path.

Description

Die Erfindung bezieht sich auf mehrpolige Leitungsschutzschalter aus zusammengebauten Automaten bzw. Polen, zumindest für einen Außenleiter, wobei der Automat über einen eigenen Auslöser verfügt, und für einen Mittelpunktleiter, wobei der Automat ohne eigenen Auslöser durch den oder die Automaten für AuBenleiter mit entklinkt wird, was zur Öffnung seines Kontaktes führt. Ein derartiger Leitungsschutzschalter ist z. B. aus der DE-A1-3 029 094 bekannt.The invention relates to multi-pole circuit breakers made of assembled machines or poles, at least for an outer conductor, the machine having its own release, and for a center conductor, the machine being unlatched by the machine or machines for the outer conductor, without its own release, which leads to the opening of his contact. Such a circuit breaker is such. B. from DE-A1-3 029 094 known.

Automaten mit eigenem Auslöser werden auch geschützte Automaten bzw. Pole genannt und Automaten ohne eigenen Auslöser ungeschützte Automaten bzw. ungeschützte Pole. Bei Leitungsschutzschaltem ist es allgemein üblich, Lichtbogenlaufhilfen vorzusehen. So können Blasschleifen in der Stromzuführung zum Kontakt ausgebildet sein oder auch Uchtbogeneinlaufhilfen in die Löschbleche durch eine vor der Stirnseite der Löschbleche angeordnete Stromzuleitung (DE-C-26 09 708). Lichtbogenlaufhilfen können auch als besondere Führung der Gasströmung, als sogenannte Umströmung, ausgebildet sein (DE: P 33 11 052).Machines with their own trigger are also called protected machines or poles and machines without their own trigger are unprotected machines or unprotected poles. In line circuit breakers, it is common practice to provide arc running aids. For example, blow loops can be formed in the power supply to the contact or Uchtbogeneinlaufhilfe in the quenching plates through a power supply line arranged in front of the face of the quenching plates (DE-C-26 09 708). Arc running aids can also be designed as a special guide for the gas flow, as a so-called flow (DE: P 33 11 052).

Der Erfindung liegt die Erkenntnis zugrunde, daß im Automaten bzw. Pol für den Mittelpunktleiter, nachstehend Mp-Leiter genannt, die Kontaktstücke deshalb erhöhtem Abbrand ausgesetzt sind, weil die Kräfte der Uchtbogenlaufhilfen den Kontakt des Mp-Pols öffnen, bevor die Entklinkung über die Automaten bzw. Pole für die Außenleiter erfolgt.The invention is based on the finding that in the machine or pole for the center conductor, hereinafter referred to as the Mp conductor, the contact pieces are exposed to increased erosion because the forces of the arching aids open the contact of the Mp pole before unlatching via the machine or poles for the outer conductors.

Der Erfindung liegt die Aufgabe zugrunde, bei mehrpoligen Leitungsschutzschaftem den erhöhten Abbrand der Kontaktstücke des Mp-Automaten zu vermeiden.The object of the invention is to avoid the increased erosion of the contact pieces of the MP machine in the case of multi-pole line protection shafts.

Die Lösung der geschilderten Aufgabe besteht nach der Erfindung darin, daß nur im bzw. in den Automaten für AuBenleiter in der Stromzuführung zum Kontakt Vorkehrungen zur Förderung des Uchtbogenlaufs ausgebildet sind. Dadurch wird die Entstehung des Lichtbogens im Automaten für den Mp-Leiter im Vergleich zu den anderen . Polen verzögert, so daß die Entklinkung von einem Automaten fur Außenleiter, also von einem geschützten Pol, rechtzeitig erfolgt, bevor der Strom im Automaten für den MpLeiter zum Offnen des noch nicht entklinkten Kontaktes führen könnte. Der Abbrand dieses Kontaktes wird dadurch wesentlich vermindert, so daß Leistungsbeschränkungen im Einsatz des mehrpoligen Leitungsschutzschalters oder aufwendige zusätzliche Maßnahmen wie wesentlich erhöhte Kontaktkräfte oder besonders beständige Kontaktstücke sich erübrigen.According to the invention, the solution to the described problem is that only in or in the machines for external conductors are arrangements for the contact with the current in the power supply for promoting the arching. As a result, the arc is created in the machine for the Mp conductor compared to the others. Poland delays, so that the unlatching of a machine for outer conductors, that is, a protected pole, takes place in good time before the current in the machine for the Mp conductor could lead to the opening of the not yet unlatched contact. The erosion of this contact is significantly reduced, so that power restrictions in the use of the multi-pole circuit breaker or complex additional measures such as significantly increased contact forces or particularly durable contact pieces are unnecessary.

Bei einem mehrpoligen Leitungsschutzschalter der geschilderten Art, bei dem die einzelnen Automaten bzw. Pole eine Uchtbogenlaufschiene mit einem Festkontaktstück aufweisen, dem ein bewegliches Kontaktstück gegenüberliegt, und mit einer längs der Stirnseiten von Löschblechen unterhalb der Ebene, in der das bewegliche Kontaktstück geführt ist, verlaufenden Zuleitung weist eine Weiterbildung der erfindungsgemäßen Lösung folgende Merkmale auf : Bei dem bzw. den Automaten für Außenleiter ist die Zuleitung in Uchtbogenlaufrichtung gesehen hinter dem Festkontaktstück mit der Uchtbogenlaufschiene verbunden. Beim Automaten für den Mp-Leiter ist die Zuleitung in Lichtbogenlaufrichtung gesehen am oder vor dem Festkontaktstück mit der Lichtbogenlaufschiene verbunden.In the case of a multi-pole circuit breaker of the type described, in which the individual machines or poles have a Uchtbogenlaufschiene with a fixed contact piece, which is opposite a movable contact piece, and with one along the end faces of quenching plates below the level in which the movable contact piece is guided A supply line has a further development of the solution according to the invention with the following features: In the machine or machines for outer conductors, the supply line is connected to the Uchtbogenlaufschiene behind the fixed contact piece in the Uchtbogenlaufrichtung. In the case of the machine for the M p- conductor, the feed line, seen in the direction of the arc running, is connected to the arc running rail on or in front of the fixed contact piece.

Die Erfindung soll nun anhand von in der Zeichnung grob schematisch wiedergegebenen Ausführungsbeispielen näher erläutert werden :

  • In Fig. 1 soll ein Automat für Außenleiter, also ein geschützter Pol teilweise geschnitten in Seitenansicht veranschaulicht sein.
  • In Fig. 2 ist ein Ausführungsbeispiel für einen Automaten für den Mp-Leiter, also ein ungeschützter Pol, in Seitenansicht bei Teilschnitt dargestellt
  • In Fig. 3 ist in der Darstellungsweise nach Fig. 2 ein anderes Ausführungsbeispiel für einen ungeschützten Pol veranschaulicht.
  • In Fig. 4 ist ein weiteres Ausführungsbeispiel für einen ungeschützten Pol veranschaulicht.
The invention will now be explained in greater detail on the basis of exemplary embodiments shown roughly schematically in the drawing:
  • In Fig. 1, an automaton for outer conductors, that is to say a protected pole, is to be illustrated partially in a side view.
  • 2 shows an exemplary embodiment of a machine for the Mp conductor, that is to say an unprotected pole, in a side view with a partial section
  • Another embodiment for an unprotected pole is illustrated in FIG. 3 in the representation according to FIG. 2.
  • A further exemplary embodiment for an unprotected pole is illustrated in FIG. 4.

Der mehrpolige Leitungsschutzschalter aus zusammengebauten Automaten bzw. Polen weist zumindest einen für einen Außenleiter, beispielsweise nach Fig. 1 auf. Er ist mit einem Automaten nach einem der Figuren 2 bis 4, also einem solchen für den Mp-Leiter, zusammengebaut. Der Automat für den Mp-Leiter kann anhand von Fig. 1 orientiert vor oder hinter der Zeichenebene angeordnet sein. Der Automat für einen AuBenleiter verfügt über einen eigenen Auslöser, einen thermischen und/oder magnetischen Auslöser unterhalb oder seitlich vom Schaltschloß 1. Der Automat für den Mp-Leiter nach Fig. 2 weist keinen eigenen Auslöser auf; er wird durch einen Automaten für den Außenleiter mit entklinkt, wenn dieser durch einen Auslöser zum Entklinken gebracht wird. Wenn das Schaltschloß 1 des Automaten für einen Außenleiter entklinkt, wird dessen Kontakt mit dem Festkontaktstück 2 und dem beweglichen Kontaktstück 3 geöffnet und über eine Kopplung 4 das Schaltschloß 1 des Automaten nach Fig. 2 mit entklinkt, so daß dessen Kontakt mit dem Festkontaktstück 2 und dem beweglichen Kontaktstück 3 geöffnet wird.The multi-pole circuit breaker made of assembled machines or poles has at least one for an outer conductor, for example according to FIG. 1. It is assembled with an automatic machine according to one of FIGS. 2 to 4, that is to say one for the Mp conductor. The automat for the Mp conductor can be arranged in front of or behind the plane of the drawing with reference to FIG. 1. The automat for an outer conductor has its own trigger, a thermal and / or magnetic trigger below or to the side of the switch lock 1. The automat for the Mp conductor according to FIG. 2 does not have its own trigger; it is also unlatched by a machine for the outer conductor if the latter is unlatched by a trigger. If the switch lock 1 of the machine unlatches for an outer conductor, its contact with the fixed contact piece 2 and the movable contact piece 3 is opened and via a coupling 4 the switch lock 1 of the machine according to FIG. 2 also unlatches, so that its contact with the fixed contact piece 2 and the movable contact piece 3 is opened.

Wesentlich ist, daß im Automaten für den Au-Benlefter nach Fig. 1 in der Stromzuführung 5 zum Kontakt Vorkehrungen zur Förderung des Uchtbogenlaufs ausgebildet sind. Im Ausführungsbeispiel ist das eine Blasschleife, die dadurch gebildet ist, daß die Zuleitung in Uchtbogenlaufrichtung 6 gesehen hinter dem Festkontaktstück 2 mit der Uchtbogenlaufschiene 7 verbunden ist Hingegen ist beim Automaten für den Mp-Leiter nach Fig. 2 die Zuleitung 8 in Uchtbogenlaufrichtung 6 gesehen am Festkontaktstück 2 mit der Lichtbogenlaufschiene 7 verbunden. Im Ausführungsbeispiel ist beim Automaten für den Außenleiter eine Lichtbogeneinlaufhilfe vor den Löschblechen in Form einer längs der Stirnseiten der Löschbleche unterhalb der Ebene, in der das bewegliche Kontaktstück 3 geführt ist verlaufenden Zuleitung 9 ausgebildet. Beim Automaten für den Mp-Leiter nach den Figuren 2 bis 3 ist die Zuleitung 9 aus Gründen der Serienfertigung entsprechend Fig. 1 ausgebildet.It is essential that in the machine for the Au fan according to FIG. 1, in the power supply 5 for the contact arrangements are made to promote Uchtbogenlauf. In the exemplary embodiment, this is a blow loop, which is formed in that the feed line, seen in the Uchtbogenlaufrichtung 6 behind the fixed contact piece 2 is connected to the Uchtbogenlaufschiene 7 In contrast, in the machine for the Mp conductor according to FIG. 2, the feed line 8 seen in the Uchtbogenlaufrichtung 6 on Fixed contact piece 2 connected to the arc rail 7. In the embodiment, the machine for External conductor an arc inlet aid in front of the quenching plates in the form of a feed line 9 running along the end faces of the quenching plates below the plane in which the movable contact piece 3 is guided. In the case of the machine for the Mp conductor according to FIGS. 2 to 3, the feed line 9 is designed in accordance with FIG. 1 for reasons of series production.

Im Automaten für den Mp-Leiter mit dem ungeschützten Pol ist der Platz für den magnetischen Auslöser 10 und für den thermischen Auslöser 11 nicht bestückt.In the machine for the Mp conductor with the unprotected pole, the space for the magnetic release 10 and for the thermal release 11 is not populated.

Beim Ausführungsbeispiel des Automaten für den Mp-Leiter nach Fig. 3 ist die Zuleitung 8 in Lichtbogenlaufrichtung 6 gesehen vor dem Festkontaktstück 2 mit der Uchtbogenlaufschiene 7 verbunden. Auch so kommt eine Blasschleife in der Zuleitung zum Kontakt nicht zustande.In the exemplary embodiment of the machine for the Mp conductor according to FIG. 3, the feed line 8, seen in the direction of arcing 6, is connected to the Uchtbogenlaufschiene 7 before the fixed contact piece 2. Even so, there is no blow loop in the lead to the contact.

Beim Automaten für den Mp-Leiter nach Fig. 4 ist die Zuleitung 8 unmittelbar in der Nähe der Anschlußklemme 12 mit der Uchtbogenlaufschiene 7 verbunden, so daß auch hier keine Anlaufhilfe für den zwischen dem Festkontaktstück 2 und dem beweglichen Kontaktstück 3 zu ziehenden Lichtbogen beim Öffnen des Kontaktes besteht. Da beim ungeschützten Automaten der Lichtbogen steht, ist weder eine Anlaufhilfe erwünscht, die die Kontakte zu früh öffnen könnte noch eine Einlaufhilfe erforderlich. Die Löschbleche können daher gleichfalls entfallen. Die Darstellung nach den Figuren 2 bis 4 ist dann so zu verstehen, daß in der Löschkammer nur die Ausformungen zum Einsetzen von Löschblechen wiedergegeben sind.4, the supply line 8 is connected directly to the Uchtbogenlaufschiene 7 in the vicinity of the terminal 12, so that here too no starting aid for the arc to be drawn between the fixed contact piece 2 and the movable contact piece 3 when opening of contact. Since the arc is on the unprotected machine, neither a start-up aid that could open the contacts too early nor a start-up aid is required. The extinguishing plates can therefore also be omitted. The illustration according to FIGS. 2 to 4 is then to be understood in such a way that only the shapes for inserting extinguishing plates are shown in the quenching chamber.

Claims (2)

1. Multipole circuit breaker consisting of assembled automatic devices or poles, at least for an outer conductor, in which case the automatic device is provided with its own tripping device, and for a central conductor, in which case the automatic device without its own tripping device is released by means of the automatic device or automatic devices for outer conductors, this resulting in the opening of a contact, characterised in that only in the automatic device or in the automatic devices for outer conductors, as the case may be, in the current supply (5) to the contact are arrangements formed for the stimulation of the arc path.
2. Multipole circuit breaker according to claim 1, in which the individual automatic devices or poles have an arc path rail (7) with a fixed contact piece (2), opposite which lies a moveable contact piece (3), and with a supply line (8) which extends along the faces of arc splitters below the plane in which the movable contact piece (3) is guided, characterised in that in the case of the automatic device or automatic devices for outer conductors the supply line (8), viewed in the arc path direction (6), is connected with the arc path rail (7) after the fixed contact piece (2) and in that in the case of automatic devices for the central conductor the supply line (8), viewed in the arc path direction (6), is connected with the arc path rail (7) at or before the fixed contact piece (2).
EP86100062A 1985-01-16 1986-01-03 Multiphase circuit breaker Expired EP0189036B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86100062T ATE45441T1 (en) 1985-01-16 1986-01-03 MULTI-POLE CIRCUIT BREAKER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853501314 DE3501314A1 (en) 1985-01-16 1985-01-16 MULTIPOLE CIRCUIT BREAKER
DE3501314 1985-01-16

Publications (2)

Publication Number Publication Date
EP0189036A1 EP0189036A1 (en) 1986-07-30
EP0189036B1 true EP0189036B1 (en) 1989-08-09

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ID=6259998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100062A Expired EP0189036B1 (en) 1985-01-16 1986-01-03 Multiphase circuit breaker

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EP (1) EP0189036B1 (en)
AT (1) ATE45441T1 (en)
DE (3) DE8500991U1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3625425A1 (en) * 1986-07-28 1988-02-04 Bbc Brown Boveri & Cie CIRCUIT BREAKER
FR2686186B1 (en) * 1992-01-13 1994-03-18 Merlin Gerin CIRCUIT BREAKER AND NEUTRAL DISCONNECTOR.
DE19926729A1 (en) * 1999-06-11 2000-12-14 Siemens Ag Protective switching device for three-phase networks
DE10352934B4 (en) * 2003-11-11 2005-12-22 Siemens Ag Arc-extinguishing device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2048256A1 (en) * 1970-10-01 1972-04-06 Bbc Brown Boveri & Cie Automatic switch with neutral disconnection
DE2609708C2 (en) * 1976-03-09 1980-10-09 Siemens Ag, 1000 Berlin Und 8000 Muenchen Miniature circuit breaker with arc starting aid
NL192589C (en) * 1980-01-04 1997-10-03 Abb Componenten B V Switching machine.
DE3311052A1 (en) * 1983-03-25 1984-09-27 Siemens AG, 1000 Berlin und 8000 München SELF-SWITCHES, IN PARTICULAR CIRCUIT BREAKERS

Also Published As

Publication number Publication date
DE3501314A1 (en) 1986-07-17
EP0189036A1 (en) 1986-07-30
DE8500991U1 (en) 1986-12-04
ATE45441T1 (en) 1989-08-15
DE3664975D1 (en) 1989-09-14

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