EP0058235B1 - Electromagnetic switching device - Google Patents

Electromagnetic switching device Download PDF

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Publication number
EP0058235B1
EP0058235B1 EP81108734A EP81108734A EP0058235B1 EP 0058235 B1 EP0058235 B1 EP 0058235B1 EP 81108734 A EP81108734 A EP 81108734A EP 81108734 A EP81108734 A EP 81108734A EP 0058235 B1 EP0058235 B1 EP 0058235B1
Authority
EP
European Patent Office
Prior art keywords
contacts
leading
main
contact
switching device
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
EP81108734A
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German (de)
French (fr)
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EP0058235A3 (en
EP0058235A2 (en
Inventor
Gerhard Dipl.-Ing. Schröther
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT81108734T priority Critical patent/ATE18826T1/en
Publication of EP0058235A2 publication Critical patent/EP0058235A2/en
Publication of EP0058235A3 publication Critical patent/EP0058235A3/en
Application granted granted Critical
Publication of EP0058235B1 publication Critical patent/EP0058235B1/en
Expired legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/54Contact arrangements
    • H01H50/541Auxiliary contact devices
    • H01H50/543Auxiliary switch inserting resistor during closure of contactor

Definitions

  • the invention relates to an electromagnetic switching device with main and leading contacts, which are interconnected with damping resistors under capacitive load.
  • the invention has for its object to construct a switching device of the type mentioned above so that when using the damping series resistors, a compact unit is obtained using electrical switching devices constructed essentially in series. This is achieved by the features in the characterizing part of the claim. This results in a compact unit and, in addition, the security of touch is increased without having to carry out a cover, because the resistors are wound from insulated wire and lie between the dividing ribs of adjacent contact pairs. This also results in increased break resistance. In addition, the J 2 t value is higher with the same resistance value and the same dimensions for the resistance.
  • the switching device shown in Fig. 1 has a housing 1, in which the main contacts 2 and the leading contacts 3 are arranged one above the other in two levels 4 and 5.
  • the switching device has three pole tracks with main contacts 2 and leading contacts 3.
  • the last track 6 is occupied with a normal break contact on floor 4 and a make contact on floor 5.
  • the individual contacts consist of the fixed contact parts 7 and those in a contact bridge holder 8 the contact bridges 9 held in the known manner.
  • the contact bridge holder 8 is actuated by a magnetic drive, not shown.
  • the fixed contact parts 7 are equipped with terminals 10, which are covered by plastic covers 11 against contact.
  • On the supply side of the main contacts 2 and the leading contacts 3 there are electrical bridges 12 which, for. B. in the form of stripped wire in the area of the terminals in the terminals.
  • the supply lines 13 of the network are also clamped in one of the terminals either on the main contact 2 or on the leading contact 3.
  • resistors 14 are clamped with their ends into the terminals of a main and a leading contact.
  • the resistors 14 are designed as wire coils and are designed to be insulated and are located between two dividing ribs 15 of the housing 1, protected against external influences. Since the switching device is tapered towards the top, practically no additional space is required to accommodate the resistors.
  • FIG. 2 The insertion of resistors, bridges and contacts into the overall circuit can be seen in FIG. 2.
  • one feed line 13 is connected to the bridge 12 and thus to a main contact 2 and a leading contact 3.
  • the other sides of the main contact 2 or the leading contact 3 are bridged via the resistor and electrically connected to the lead 16 to the capacitors 17 connected in a triangle.
  • the circuit constructed in this way first switches the capacitors 17 to the network via the series resistors 14, specifically via the leading contact 3, and after the contact 2 is closed, the series resistors 14 and the leading contacts 3 are bridged.
  • the capacitors 17 are switched off, the process is carried out in the reverse order, so that switch-off damping is also present here; because the leading contacts 3 only open after the main contacts 2 have already opened.
  • the circuit shown in FIG. 3 uses only two resistors 14.
  • two main contacts 2 which are assigned to the resistors 14, are connected in parallel.
  • the third phase is connected to the power supply line 13 via a leading contact 3 connected in parallel and a normal normally open contact.
  • the contactor used here thus has five pole tracks as a two-day contactor.
  • the fifth pole track with the make contact and the break contact is used for monitoring and control purposes.
  • the parallel connection of the current paths serves to increase the current carrying capacity.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Relay Circuits (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Vehicle Body Suspensions (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Cookers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Electronic Switches (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

An electromagnetic switchgear has a set of main and leading switches in a housing for adding series damping resistors to legs of a network which feeds a capacitive load. Plural switch sets are arranged side by side with associated main and leading switches positioned one over the other in two stories. Electrical bridges which extend over the two stories connect the input leads of the switches of a set. Similarly, a damping resistor is connected between the output leads of the switches of a set, and the resistors are mounted so that they lie, protected against external influences, between separation ribs on the switchgear housing.

Description

Die Erfindung bezieht sich auf ein elektromagnetisches Schaltgerät mit Haupt- und voreilenden Kontakten, die mit Dämpfungsvorwiderständen bei kapazitiver Belastung zusammengeschaltet sind.The invention relates to an electromagnetic switching device with main and leading contacts, which are interconnected with damping resistors under capacitive load.

Bei einem bekannten elektromagnetischen Schaltgerät der obengenannten Art (DE-PS 902 400) ist eine besondere Schaltgerätekonstruktion und gesonderte Halterungsmittel für den Vorwiderstand vorgesehen, was darüber hinaus einen relativ hohen Raumbedarf erfordert. Zum Stand der Technik wird in jener Druckschrift ausgeführt, daß zwar schon Schaltgeräte mit voreilenden Kontakten, die vor den Hauptkontakten ein- und nach diesen ausschalten, bekannt sind, bei dem speziellen dort beschriebenen Schaltgerät wird jedoch sowohl bei der Bewegung des Magnetankers im Sinne des Schließens der Kontakte als auch bei seiner Bewegung im Sinne des Öffnens der Kontakte stets zunächst der Vorkontakt und danach erst der Hauptkontakt betätigt.In a known electromagnetic switchgear of the type mentioned above (DE-PS 902 400), a special switchgear construction and separate holding means for the series resistor are provided, which moreover requires a relatively large space. The state of the art states in that publication that switching devices with leading contacts that switch on and off before the main contacts are already known, but in the special switching device described there, both in the movement of the armature in the sense of closing the contacts as well as during its movement in the sense of opening the contacts always first actuates the pre-contact and only then the main contact.

Bei Schützen für Drehstromkondensatoren ist es weiterhin bereits bekannt, Schnellentladewiderstände entweder auf eine das Hilfsschütz enthaltende Platte aufzuschrauben oder mit den Klemmen des Hilfsschützes direkt zu verbinden. Die Schnellentladewiderstände sind hier parallel zur Befestigungsebene des Schützes geführt, so daß auch hier ein relativ hoher Raumbedarf für die Gesamtkombination erforderlich ist, ohne daß hiermit die gewünschte Schaltung der Dämpfungsvorwiderstände beim Einschalten mittels voreilender Kontakte erreicht werden kann.In contactors for three-phase capacitors, it is also already known to screw fast discharge resistors either onto a plate containing the auxiliary contactor or to connect them directly to the terminals of the auxiliary contactor. The rapid discharge resistors are guided parallel to the mounting level of the contactor, so that here too a relatively high space requirement is required for the overall combination, without the desired switching of the damping resistors when switching on being achieved by means of leading contacts.

Es ist an sich bei Schützen bekannt, Kontakte in verschiedenen Etagen übereinanderliegend anzuordnen (DE-U-7 418 345).It is known per se for shooters to arrange contacts on different levels one above the other (DE-U-7 418 345).

Der Erfindung liegt die Aufgabe zugrunde, ein Schaltgerät der obengenannten Art derart aufzubauen, daß sich bei Verwendung der Dämpfungsvorwiderstände eine kompakte Einheit unter Verwendung von im wesentlichen serienmäßig aufgebauten elektrischen Schaltgeräten ergibt. Dies wird durch die Merkmale im kennzeichnenden Teil des Anspruches erreicht. Hierdurch ergibt sich eine kompakte Einheit und zusätzlich wird die Berührungssicherheit, ohne eine Abdeckung vornehmen zu müssen, erhöht, weil die Widerstände aus isoliertem Draht gewickelt sind und zwischen den Teilungsrippen benachbarter Kontakpaare liegen. Hierdurch ergibt sich zusätzlich eine erhöhte Bruchsicherheit. Darüber hinaus ist der J2t-Wert bei gleichem Widerstandswert und gleichen Abmessungen für den Widerstand höher.The invention has for its object to construct a switching device of the type mentioned above so that when using the damping series resistors, a compact unit is obtained using electrical switching devices constructed essentially in series. This is achieved by the features in the characterizing part of the claim. This results in a compact unit and, in addition, the security of touch is increased without having to carry out a cover, because the resistors are wound from insulated wire and lie between the dividing ribs of adjacent contact pairs. This also results in increased break resistance. In addition, the J 2 t value is higher with the same resistance value and the same dimensions for the resistance.

Anhand der Zeichnung werden Ausführungsbeispiele gemäß der Erfindung beschrieben.

  • Figur 1 zeigt den Aufbau des erfindungsgemäßen Schaltgerätes,
  • Figur 2 zeigt die prinzipielle Zusammenschaltung des Schaltgerätes mit den Kondensatoren,
  • Figur 3 zeigt die Schaltung eines elektromagnetischen Schaltgerätes mit erfindungsgemäßen Aufbau in drei Polbahnen und zwei Vorwiderständen, wobei zusätzlich zur Erhöhung der Stromtragfähigkeit zwei Strombahnen parallel geschaltet sind und ein Hilfskontaktpaar als Schließer und Öffner vorhanden ist.
Exemplary embodiments according to the invention are described with the aid of the drawing.
  • FIG. 1 shows the structure of the switching device according to the invention,
  • FIG. 2 shows the basic interconnection of the switching device with the capacitors,
  • Figure 3 shows the circuit of an electromagnetic switching device with construction according to the invention in three pole tracks and two series resistors, in addition to increasing the current carrying capacity, two current paths are connected in parallel and a pair of auxiliary contacts is provided as make and break contacts.

Das in Fig. 1 dargestellte Schaltgerät besitzt ein Gehäuse 1, in dem die Hauptkontakte 2 und die voreilenden Kontakte 3 in zwei Etagen 4 und 5 übereinander angeordnet sind. Das Schaltgerät besitzt drei Polbahnen mit Hauptkontakten 2 und voreilenden Kontakten 3. Die letzte Bahn 6 ist besetzt mit einem normalen Öffner in der Etage 4 und einem Schließer in der Etage 5. Die einzelnen Kontakte bestehen aus den Festkontaktteilen 7 und den in einem Kontaktbrückenhalter 8 mit den in der bekannten Weise gehaltenen Kontaktbrücken 9. Der Kontaktbrückenhalter 8 wird von einem nicht näher dargestellten Magnetantrieb betätigt. Die Festkontaktteile 7 sind mit Anschlußklemmen 10 ausgestattet, die durch Kunststoffabdeckungen 11 gegen Berührung abgedeckt sind. An der Zuleitungsseite der Hauptkontakte 2 und der voreilenden Kontakte 3 sind elektrische Brücken 12 vorhanden, die z. B. in Form von im Bereich der Klemmen abisolierten Drahtstücken in die Klemmen eingeführt werden. Zusätzlich werden hier die Zuleitungen 13 des Netzes mit in eine der Klemmen entweder am Hauptkontakt 2 oder am voreilenden Kontakt 3 eingeklemmt. Auf der Abgangsseite der Haupt- bzw. voreilenden Kontakte 2 bzw. 3 sind Widerstände 14 mit ihren Enden in die Klemmen jeweils eines Haupt- und eines voreilenden Kontaktes eingeklemmt. Die Widerstände 14 sind im vorliegenden Fall als Drahtwickel ausgebildet und isoliert ausgeführt und liegen zwischen jeweils zwei Teilungsrippen 15 des Gehäuses 1 geschützt gegen äußere Einflüsse. Da das Schaltgerät nach oben hin verjüngt ist, ist praktisch kein zusätzlicher Raumbedarf für die Unterbringung der Widerstände notwendig.The switching device shown in Fig. 1 has a housing 1, in which the main contacts 2 and the leading contacts 3 are arranged one above the other in two levels 4 and 5. The switching device has three pole tracks with main contacts 2 and leading contacts 3. The last track 6 is occupied with a normal break contact on floor 4 and a make contact on floor 5. The individual contacts consist of the fixed contact parts 7 and those in a contact bridge holder 8 the contact bridges 9 held in the known manner. The contact bridge holder 8 is actuated by a magnetic drive, not shown. The fixed contact parts 7 are equipped with terminals 10, which are covered by plastic covers 11 against contact. On the supply side of the main contacts 2 and the leading contacts 3 there are electrical bridges 12 which, for. B. in the form of stripped wire in the area of the terminals in the terminals. In addition, the supply lines 13 of the network are also clamped in one of the terminals either on the main contact 2 or on the leading contact 3. On the outgoing side of the main or leading contacts 2 and 3, resistors 14 are clamped with their ends into the terminals of a main and a leading contact. In the present case, the resistors 14 are designed as wire coils and are designed to be insulated and are located between two dividing ribs 15 of the housing 1, protected against external influences. Since the switching device is tapered towards the top, practically no additional space is required to accommodate the resistors.

Die Einfügung von Widerständen, Brücken und Kontakten in die Gesamtschaltung ist aus Fig. 2 ersichtlich. Jeweils eine Zuleitung 13 ist mit der Brücke 12 und damit mit einem Hauptkontakt 2 und einem voreilenden Kontakt 3 in Verbindung gebracht. Die anderen Seiten des Hauptkontaktes 2 bzw. des voreilenden Kontaktes 3 sind über den Widerstand gebrückt und mit der Ableitung 16 zu den in Dreieck geschalteten Kondensatoren 17 elektrisch leitend verbunden. Die so aufgebaute Schaltung schaltet zunächst die Kondensatoren 17 über die Vorwiderstände 14 ans Netz und zwar über den voreilenden Kontakt 3, und nach Schließen des Kontaktes 2 werden die Vorwiderstände 14 und die voreilenden Kontakte 3 überbrückt. Beim Ausschalten der Kondensatoren 17 wird in umgekehrter Reihenfolge verfahren, so daß auch hier eine Ausschaltdämpfung vorhanden ist; denn die voreilenden Kontakte 3 öffnen erst, nachdem die Hauptkontakte 2 bereits geöffnet haben.The insertion of resistors, bridges and contacts into the overall circuit can be seen in FIG. 2. In each case one feed line 13 is connected to the bridge 12 and thus to a main contact 2 and a leading contact 3. The other sides of the main contact 2 or the leading contact 3 are bridged via the resistor and electrically connected to the lead 16 to the capacitors 17 connected in a triangle. The circuit constructed in this way first switches the capacitors 17 to the network via the series resistors 14, specifically via the leading contact 3, and after the contact 2 is closed, the series resistors 14 and the leading contacts 3 are bridged. When the capacitors 17 are switched off, the process is carried out in the reverse order, so that switch-off damping is also present here; because the leading contacts 3 only open after the main contacts 2 have already opened.

Die aus Fig. 3 ersichtliche Schaltung benutzt lediglich zwei Widerstände 14. Hier sind im Gegensatz zur Ausführungsform nach Fig. 2 jeweils zwei Hauptkontakte 2, die den Widerständen 14 zugeordnet sind, parallel geschaltet. Die dritte Phase wird über einen parallel geschalteten, voreilenden Kontakt 3 und einen normalen Schließer an die Netzzuleitung 13 gelegt. Das hier verwandte Schütz hat somit - als Zweietagenschütz - fünf Polbahnen. Die fünfte Polbahn mit dem Schließer und dem Öffner dient für Überwachungs- und Steuerzwecke. Das Parallelschalten der Strombahnen dient zur Erhöhung der Stromtragfähigkeit.The circuit shown in FIG. 3 uses only two resistors 14. Here, in contrast to the embodiment according to FIG. 2, two main contacts 2, which are assigned to the resistors 14, are connected in parallel. The third phase is connected to the power supply line 13 via a leading contact 3 connected in parallel and a normal normally open contact. The contactor used here thus has five pole tracks as a two-day contactor. The fifth pole track with the make contact and the break contact is used for monitoring and control purposes. The parallel connection of the current paths serves to increase the current carrying capacity.

Claims (1)

  1. An electromagnetic switching device comprising main contacts (2) and leading contacts (3) which are connected to attenuating series resistances (14) in the case of capacitive load, where the leading contacts (3) switch on before the main contacts (2) and switch off after said main contacts, characterised in that the switching device is multipolar and the main contacts (2) which are formed as bridging contacts, on the one hand, and the leading contacts (3), on the other hand, are in each case arranged themselves in one of two superimposed levels (4, 5) in the switching device and at least two contact pairs which in each case consist of a main contact (2) and an auxiliary contact (3) are directly bridged in themselves across the two levels (4, 5) on the inlet side (13), and on the outlet side (16), are bridged by resistors (4) wound from insulated wire, which lie between separating ribs (15) of adjacent contact pairs.
EP81108734A 1981-02-12 1981-10-22 Electromagnetic switching device Expired EP0058235B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81108734T ATE18826T1 (en) 1981-02-12 1981-10-22 ELECTROMAGNETIC SWITCHING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3105117A DE3105117C2 (en) 1981-02-12 1981-02-12 Electromagnetic switching device
DE3105117 1981-02-12

Publications (3)

Publication Number Publication Date
EP0058235A2 EP0058235A2 (en) 1982-08-25
EP0058235A3 EP0058235A3 (en) 1983-08-03
EP0058235B1 true EP0058235B1 (en) 1986-03-26

Family

ID=6124721

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108734A Expired EP0058235B1 (en) 1981-02-12 1981-10-22 Electromagnetic switching device

Country Status (8)

Country Link
US (1) US4437020A (en)
EP (1) EP0058235B1 (en)
JP (2) JPS57154738A (en)
AT (1) ATE18826T1 (en)
BR (1) BR8200679A (en)
CA (1) CA1185349A (en)
DE (1) DE3105117C2 (en)
DK (1) DK157583B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3704482A1 (en) * 1987-02-13 1988-08-25 Licentia Gmbh Electromagnetic switching device for switching capacitive loads on and off

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8810908U1 (en) * 1988-08-29 1988-10-13 Siemens AG, 1000 Berlin und 8000 München Electromagnetic switching device, in particular contactor
FR2667439B1 (en) * 1990-09-27 1992-11-27 Telemecanique Electrique SWITCHING APPARATUS FOR SUPPLYING CAPACITIVE LOADS.
FR2684797B1 (en) * 1991-12-05 1994-03-04 Telemecanique MULTIPOLAR SWITCHING DEVICE WITH PARTIALLY FUGITIVE ACTION.
CH693051A5 (en) * 1995-06-09 2003-01-31 Rockwell Automation Ag Resistor arrangement at a given for switching capacitive loads electromagnetic switching device.
DE19729595C1 (en) * 1997-07-10 1998-10-22 Siemens Ag Capacitor switching contactor arrangement
DE10315243B3 (en) 2003-04-03 2004-08-26 Siemens Ag Electromechanical switching system for relays, switches and pushbuttons has main contact bridge providing contact path between pairs of fixed contacts
US7540792B2 (en) 2006-08-07 2009-06-02 General Electric Company Switching apparatus
DE102010032456B4 (en) * 2010-07-28 2012-11-29 Schaltbau Gmbh Electric contactor
DE102013226438A1 (en) * 2013-12-18 2015-06-18 Siemens Aktiengesellschaft Contactor with external resistor
KR20220056029A (en) * 2020-10-27 2022-05-04 주식회사 엘지에너지솔루션 Relay switch device with integrated precharge system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1784226A (en) * 1928-05-29 1930-12-09 Condit Electrical Mfg Corp Motor-control switch
DE902400C (en) * 1940-12-03 1954-02-01 Koch & Sterzel Ag Electromagnetic switching relay with main and pre-contact, especially for use as a contactor in X-ray apparatus
FR1498480A (en) * 1966-07-27 1967-10-20 Cie Electromecanique Advanced training in electrical contactors
DE6916788U (en) * 1969-04-25 1969-10-23 Licentia Gmbh ELECTROMAGNETIC SWITCHING DEVICE
DE2325982A1 (en) * 1973-05-22 1974-12-12 Haller & Co E CONTACT ARRANGEMENT OF A RELAY
DE2407057C3 (en) * 1974-02-14 1979-04-26 Siemens Ag, 1000 Berlin Und 8000 Muenchen Electromagnetic switching device
JPS5472451A (en) * 1977-11-18 1979-06-09 Matsushita Electric Ind Co Ltd Magnet type relay
DE2948959C2 (en) * 1979-12-05 1983-01-05 Siemens AG, 1000 Berlin und 8000 München Electromagnetic switching device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3704482A1 (en) * 1987-02-13 1988-08-25 Licentia Gmbh Electromagnetic switching device for switching capacitive loads on and off

Also Published As

Publication number Publication date
BR8200679A (en) 1982-12-14
DE3105117A1 (en) 1982-08-19
EP0058235A3 (en) 1983-08-03
DK57982A (en) 1982-08-13
DE3105117C2 (en) 1985-10-17
EP0058235A2 (en) 1982-08-25
US4437020A (en) 1984-03-13
JPS57154738A (en) 1982-09-24
ATE18826T1 (en) 1986-04-15
CA1185349A (en) 1985-04-09
JPS63174141U (en) 1988-11-11
DK157583B (en) 1990-01-22
JPH0648727Y2 (en) 1994-12-12

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