EP0865661A2 - Contactor safety combination - Google Patents

Contactor safety combination

Info

Publication number
EP0865661A2
EP0865661A2 EP96946017A EP96946017A EP0865661A2 EP 0865661 A2 EP0865661 A2 EP 0865661A2 EP 96946017 A EP96946017 A EP 96946017A EP 96946017 A EP96946017 A EP 96946017A EP 0865661 A2 EP0865661 A2 EP 0865661A2
Authority
EP
European Patent Office
Prior art keywords
contactors
safety combination
contactor
combination according
locking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96946017A
Other languages
German (de)
French (fr)
Other versions
EP0865661B1 (en
Inventor
Erwin Flierl
Richard Freitag
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0865661A2 publication Critical patent/EP0865661A2/en
Application granted granted Critical
Publication of EP0865661B1 publication Critical patent/EP0865661B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/001—Means for preventing or breaking contact-welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/32—Latching movable parts mechanically
    • H01H50/323—Latching movable parts mechanically for interlocking two or more relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/001—Means for preventing or breaking contact-welding
    • H01H2003/002—Means for preventing or breaking contact-welding with lockout, e.g. two contact pairs in series
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits
    • H01H47/004—Monitoring or fail-safe circuits using plural redundant serial connected relay operated contacts in controlled circuit

Definitions

  • the invention relates to a contactor safety combination with a first contactor with a first contact carrier, with a second contactor with a second contact carrier, contacts being switchable via the two contact carriers, and with the contactors functioning properly for proper operation ensuring locking.
  • Contactor safety combinations are known as electrical circuits. They usually consist of three auxiliary contactors or relays. The position of the contactors K2 and K3 is queried via a contactor K1 before switching on in accordance with the circuit shown in FIG. In fault-free operation, the enabling circuit, consisting of series connection of NC contacts, NO contacts K2 and NO contacts K3, is switched through by the NC contact. Safe disconnection even in the event of a fault is ensured by the series connection of the NO contacts K2 and K3. The functionality of these versions is guaranteed by an electrical interlock or position query of the contactors Kl, K2 and K3. The embodiment is characterized by a high wiring effort. In order to avoid wiring errors, the main part of the necessary wiring is realized via a printed circuit board. The quality of the release current path on the circuit board determines the permissible current. In known contactor safety combinations, this is below the permissible current of the individual contactors.
  • a restart lock of a relay is known from DE 36 02 692 AI.
  • the restart interlock of a relay that simultaneously switches two contact arrangements by means of a switching finger is implemented here.
  • a common switching element, on which a pointer is formed, acts on the two movable contacts of the contact arrangements. Its free end lies in the path of movement of the switching finger when both movable contacts are in the same position.
  • the pointer and the switching finger are so narrow that the actuating surface of the pointer lies outside the movement path of the switching finger when the switching element is pivoted due to the different position of the two movable contacts, ie when one of the contacts is glued.
  • the invention has for its object to provide a contactor safety combination of the type mentioned above, which is inexpensive and simple, enables the use of contactors of any size and requires only two contactors.
  • a locking module is provided as an independent unit for locking, by means of which the two contactors are coupled.
  • the advantage of this solution is that contactors of any size can be switched, and that the switching of powerful consumers is also possible.
  • Conventional contactors in connection with the locking module can be assembled by the customer to form a contactor safety combination.
  • the solution is suitable for both AC and DC contactors.
  • 1 shows two contactors and a locking module coupling them in the position of the contactors before switching on in the undisturbed state
  • 2 shows the basic coupling of two contactors with one
  • FIG. 3 shows the basic coupling of two contactors with one locking module with during the switch-off process in the disturbed state
  • FIG. 4 shows the basic coupling of two contactors with one
  • FIG. 5 shows an electrical circuit of the contactor safety combination
  • FIG. 6 shows an arrangement of the locking construction system according to FIG
  • FIG. 7 shows an arrangement of the locking system according to FIGS. 1 to 4 on the front of two contactors.
  • 1 shows a locking device 5 as well as an indicative first contactor 1 and a second contactor 3, both of which are coupled by the locking device 5, resulting in a contactor safety combination.
  • 1 shows the position of contactors 1 and 3 before switching on in the undisturbed state.
  • Each of the two contactors 1 and 3 has a first contact carrier 2 and a second contact carrier 4, through which - as indicated - normally open contacts 15 and 16 can be switched.
  • the contact carriers 2 and 4 have projections 6 which protrude through a recess 7 in the respective housing wall 8 of the contactors 1 and 3 and are provided with a round pin 17 at the end.
  • the recesses 7 are dimensioned such that the projections 6 on the contact supports 2 and 4 can move freely with them when the normally open contacts 15 and 16 are switched on.
  • the locking unit 5 comprises a heart-shaped coupling element 9, the tip of which is formed as a nose-shaped projection 10, and two scissor-like, crossed, rotatably mounted beams 12, the ends of which are directed towards the coupling element 9 and taper off, while the ends facing away from one another Tension spring 13 are interconnected.
  • the Ver- locking components 9, 12, 13 are arranged in a cuboid housing 19. An opening 11 is formed by the two bars 12, into which the nose-shaped projection 10 of the coupling element 9 is immersed when the contactors 1 and 3 are switched on.
  • the coupling element 9 arranged above the opening 11 has slots 18 on both sides, the round pins 17 of the projections 6 of both contactors 1 and 3 being inserted. This results in rotary bearings via which the coupling element 9 is held and can be rotated about its center of gravity.
  • smd stops 20 are provided on the sides facing the housing 19 of the locking module 5, the function of which is described elsewhere.
  • the coupling element 9 is also moved downward in the same direction when it is switched on and is immersed in the opening 11 em formed by the crossed bars 12.
  • the contactor safety combination described can be used in the same way for contactors to be locked with break contacts.
  • FIG. 3 shows the disturbed state of the contactor safety combination during the switch-off process.
  • the disturbed state is based on welding one of the normally open contacts 15 or 16, in the present case a normally open contact 16 of the second contactor 3 being welded so that the associated second contact carrier 4 is caught and the other first contact carrier 2 of the undisturbed one first contactor 1 moves freely upwards.
  • the mounting of the coupling element 9 via the rotary bearings 17, 18 enables such a movement in which the coupling member 9 rotates and its nose-shaped projection 10 slides along the inside of the one beam 12.
  • the pressure exerted on the bar 12 can be due to the rotatable mounting of the bar 12 in Connection with the tension spring 13 can be taken up without any problems, ie without damaging stress.
  • the second contactor 3 is also locked after one of the normally open contacts 15 of the first contactor 1 is welded. This means that a release only takes place if from a trouble-free state, i.e. non-welded normally open contacts 15 or 16 is switched on.
  • the contactor 5 shows a circuit diagram of the contactor safety combination.
  • the normally open contacts 15 and 16 of the contactors 1 and 3 are connected in series. Accordingly, it can also be switched off if 1 or 3 NO contacts weld to one of the contactors during or after switching on.
  • the lock is designed so that the contactors can open independently. The error is reliably detected the next time the device is switched on.
  • the wiring effort is limited to the direct control of the coils and the wiring of the enabling circuits. Due to the protection-calculated wiring, it is not necessary to restrict the data of the individual devices for the combination.
  • the locking unit 5 can sit both between the shooters (see FIG. 6), on the front (FIG. 7) of the shooters, and under the shooters.
  • the contactor safety combination described also has the advantage that if a contactor is lightly welded, there is the possibility that the second protection during testing switching on removes the welding. Auxiliary switches, blocks and other accessories can still be used for the contactors.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Abstract

A contactor safety combination is proposed comprising two contactors (1, 3) and a mechanical locking component (5) coupled between the contactors. The latter can be standard commercial contactors of any size to allow switching of even high-power consumer devices. This solution also eliminates the need for a third contact traditionally required to effect locking.

Description

Beschreibungdescription
SchützsicherheitskombinationContactor safety combination
Die Erfindung bezieht sich auf eine Schützsicherheitskombma- tion mit einem ersten Schütz mit einem ersten Kontaktträger, mit einem zweiten Schütz mit einem zweiten Kontaktträger, wo¬ bei über die beiden Kontaktträger Kontakte schaltbar sind, und mit einer zum einwandfreien Betrieb die Funktionstüchtig- keit der Schütze gewährleistenden Verriegelung.The invention relates to a contactor safety combination with a first contactor with a first contact carrier, with a second contactor with a second contact carrier, contacts being switchable via the two contact carriers, and with the contactors functioning properly for proper operation ensuring locking.
Schützsicherheitskombinationen sind als elektrische Schaltun¬ gen bekannt. Sie bestehen zumeist aus drei Hilfsschützen bzw. Relais. Dabei wird über ein Vorschütz Kl die Stellung der Schütze K2 und K3 vor dem Einschalten abgefragt gemäß der in FIG 8 dargestellten Schaltung. Im störungsfreien Betrieb wird der Freigabekreis, bestehend aus Reihenschaltung der Öffner Kl, Schließer K2 und Schließer K3 , vom Öffner Kl durchge- schaltet . Das sichere Abschalten auch im Störungsfall wird durch die Reihenschaltung der Schließer K2 und K3 gewährlei¬ stet. Die Funktionstüchtigkeit dieser Ausführungen wird durch eine elektrische Verriegelung bzw. Stellungsabfrage der Schütze Kl, K2 und K3 gewährleistet. Kennzeichnend für die Ausführungsform ist ein hoher Verdrahtungsaufwand. Um Ver- drahtungsfehler zu vermeiden, wird der Hauptanteil der not¬ wendigen Verdrahtung über eine Leiterplatte realisiert. Die Güte der Freigabestrombahn auf der Leiterplatte bestimmt den zulässigen Strom. Dieser liegt bei bekannten Schützsicher¬ heitskombinationen unter dem zulässigen Strom der Einzel- schütze.Contactor safety combinations are known as electrical circuits. They usually consist of three auxiliary contactors or relays. The position of the contactors K2 and K3 is queried via a contactor K1 before switching on in accordance with the circuit shown in FIG. In fault-free operation, the enabling circuit, consisting of series connection of NC contacts, NO contacts K2 and NO contacts K3, is switched through by the NC contact. Safe disconnection even in the event of a fault is ensured by the series connection of the NO contacts K2 and K3. The functionality of these versions is guaranteed by an electrical interlock or position query of the contactors Kl, K2 and K3. The embodiment is characterized by a high wiring effort. In order to avoid wiring errors, the main part of the necessary wiring is realized via a printed circuit board. The quality of the release current path on the circuit board determines the permissible current. In known contactor safety combinations, this is below the permissible current of the individual contactors.
Weiterhin ist eine Wiedereinschaltsperre eines Relais durch die DE 36 02 692 AI bekannt. Die Wiedereinschaltεperre eines mittels eines Schaltfingers gleichzeitig zwei Kontaktanord- nungen schaltenden Relais ist hier realisiert. An den beiden beweglichen Kontakten der Kontaktanordnungen greift ein ge¬ meinsames Schaltglied an, an dem ein Zeiger ausgebildet ist. Dessen freies Ende liegt in der Bewegungsbahn des Schaltfin- gerε, wenn beide bewegliche Kontakte in der gleichen Stellung stehen. Der Zeiger und der Schaltfinger sind so schmal ausge¬ bildet, daß die Betätigungsfläche des Zeigers außerhalb der Bewegungsbahn des Schaltfingers liegt, wenn das Schaltglied aufgrund unterschiedlicher Stellung der beiden beweglichen Kontakte, also beim Kleben einer der Kontakte, verschwenkt ist.Furthermore, a restart lock of a relay is known from DE 36 02 692 AI. The restart interlock of a relay that simultaneously switches two contact arrangements by means of a switching finger is implemented here. A common switching element, on which a pointer is formed, acts on the two movable contacts of the contact arrangements. Its free end lies in the path of movement of the switching finger when both movable contacts are in the same position. The pointer and the switching finger are so narrow that the actuating surface of the pointer lies outside the movement path of the switching finger when the switching element is pivoted due to the different position of the two movable contacts, ie when one of the contacts is glued.
Der Erfindung liegt die Aufgabe zugrunde, eine Schützsicher- heitskombination der obengenannten Art zu schaffen, die kostengünstig und einfach aufgebaut ist, die Verwendung beliebig großer Schütze ermöglicht und mit nur zwei Schützen auskommt .The invention has for its object to provide a contactor safety combination of the type mentioned above, which is inexpensive and simple, enables the use of contactors of any size and requires only two contactors.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß zur Ver¬ riegelung ein als selbständige Einheit mechanisch ausgeführ¬ ter Verriegelungsbaustein vorgesehen ist, durch den die bei¬ den Schütze gekoppelt sind. Der Vorteil dieεer Lösung besteht darin, daß beliebig große Schütze geschaltet werden können, und daß auch die Schaltung leistungsstarker Verbraucher mög¬ lich ist. Dabei können handelsübliche Schütze in Verbindung mit dem Verriegelungsbaustein vom Kunden zu einer Schütz¬ sicherheitskombination zusammeninontiert werden. Die Lösung eignet sich sowohl für AC- alε auch DC-Schütze.The object is achieved according to the invention in that a locking module is provided as an independent unit for locking, by means of which the two contactors are coupled. The advantage of this solution is that contactors of any size can be switched, and that the switching of powerful consumers is also possible. Conventional contactors in connection with the locking module can be assembled by the customer to form a contactor safety combination. The solution is suitable for both AC and DC contactors.
Vorteilhafte Weiterbildung der Erfindung sind den Unteran¬ sprüchen zu entnehmen.Advantageous developments of the invention can be found in the subclaims.
Eine Ausführungsform der Erfindung wird im folgenden anhand einer Zeichnung näher erläutert. Es zeigen:An embodiment of the invention is explained below with reference to a drawing. Show it:
FIG 1 zwei Schütze und einen diese koppelnden Verriege- lungsbaustein in der Stellung der Schütze vor dem Einschalten im ungestörten Zustand, FIG 2 die prinzipielle Kopplung zweier Schütze mit einem1 shows two contactors and a locking module coupling them in the position of the contactors before switching on in the undisturbed state, 2 shows the basic coupling of two contactors with one
Verriegelungsbaustem in der Stellung der Schütze nach dem Einschalten im ungestörten Zustand, FIG 3 die prinzipielle Kopplung zweier Schütze mit einem Verriegelungsbaustem mit während des Ausschaltvor- gangs im gestörten Zustand, FIG 4 die prinzipielle Kopplung zweier Schütze mit einem3 shows the basic coupling of two contactors with one locking module with during the switch-off process in the disturbed state, FIG. 4 shows the basic coupling of two contactors with one
Verriegelungsbaustem nach Beendigung des Ausschalt- vorgangε im gestörten Zuεtand, FIG 5 eine elektrische Schaltung der Schützsicherheitskom- bmation, FIG 6 eine Anordnung des Verπegelungsbaustemes gemäß FIGInterlocking system after completion of the switch-off operation in the disturbed state, FIG. 5 shows an electrical circuit of the contactor safety combination, FIG. 6 shows an arrangement of the locking construction system according to FIG
1 bis 4 zwischen zwei Schützen, FIG 7 eine Anordnung des Verriegelungsbaustems gemäß FIG 1 bis 4 an der Frontseite zweier Schütze.1 to 4 between two contactors, FIG. 7 shows an arrangement of the locking system according to FIGS. 1 to 4 on the front of two contactors.
In FIG 1 sind ein Vemegelungsbauεtem 5 εowie andeutungs- weiεe em erεteε Schütz 1 und em zweites Schütz 3 darge¬ stellt, die beide durch den Verriegelungsbaustem 5 gekoppelt sind, wodurch sich eine Schützsicherheitskombination ergibt. FIG 1 zeigt die Stellung der Schütze 1 und 3 vor dem Ein¬ schalten im ungestörten Zustand. Jedes der beiden Schütze 1 bzw. 3 weist einen ersten Kontaktträger 2 bzw. einen zweiten Kontaktträger 4 auf, durch die - wie angedeutet - Schließer- kontakte 15 bzw. 16 schaltbar sind. Die Kontaktträger 2 bzw. 4 haben Anformungen 6, die durch eme Auεnehmung 7 in der jeweiligen Gehäusewand 8 der Schütze 1 und 3 hindurchragen und endseitig mit einem Rundzapfen 17 versehen sind. Die Aus¬ nehmungen 7 sind dabei so bemessen, daß sich die Anformungen 6 an den Kontaktträgem 2 und 4 bei der Einschaltung der Schließerkontakte 15 bzw. 16 frei m ihnen bewegen können. Der Verriegelungsbaustem 5 umfaßt ein herzförmiges Koppel¬ element 9, dessen Spitze als nasenförmiger Vorεprung 10 aus¬ gebildet ist, sowie zwei scherenförmig gekreuzt liegende, drehbare gelagerte Balken 12, deren zum Koppelelement 9 ge¬ richtete Enden spitz auslaufen, während die abgewandten Enden durch eine Zugfeder 13 miteinander verbunden sind. Die Ver- riegelungskomponenten 9, 12, 13 sind m einem quaderförmigen Gehäuse 19 angeordnet. Durch die beiden Balken 12 ist eine Öffnung 11 gebildet, in die der nasenförmige Vorsprung 10 des Koppelelementε 9 beim Einschalten der Schütze 1 und 3 ein- taucht. Das oberhalb der Öffnung 11 angeordnete Koppelelement 9 weist zu beiden Seiten Schlitze 18 auf, m die die Rundzap¬ fen 17 der Anformungen 6 beider Schütze 1 und 3 eingesteckt sind. Hierdurch ergeben sich Drehlager, über die das Koppel¬ element 9 gehalten und um seinen Schwerpunkt drehbar ist. Neben den spitz auslaufenden Balkenenden, smd auf den dem Gehäuse 19 des Verriegelungsbausteins 5 zugewandten Seiten Anschläge 20 vorgesehen, deren Funktion an anderer Stelle beschrieben wird.1 shows a locking device 5 as well as an indicative first contactor 1 and a second contactor 3, both of which are coupled by the locking device 5, resulting in a contactor safety combination. 1 shows the position of contactors 1 and 3 before switching on in the undisturbed state. Each of the two contactors 1 and 3 has a first contact carrier 2 and a second contact carrier 4, through which - as indicated - normally open contacts 15 and 16 can be switched. The contact carriers 2 and 4 have projections 6 which protrude through a recess 7 in the respective housing wall 8 of the contactors 1 and 3 and are provided with a round pin 17 at the end. The recesses 7 are dimensioned such that the projections 6 on the contact supports 2 and 4 can move freely with them when the normally open contacts 15 and 16 are switched on. The locking unit 5 comprises a heart-shaped coupling element 9, the tip of which is formed as a nose-shaped projection 10, and two scissor-like, crossed, rotatably mounted beams 12, the ends of which are directed towards the coupling element 9 and taper off, while the ends facing away from one another Tension spring 13 are interconnected. The Ver- locking components 9, 12, 13 are arranged in a cuboid housing 19. An opening 11 is formed by the two bars 12, into which the nose-shaped projection 10 of the coupling element 9 is immersed when the contactors 1 and 3 are switched on. The coupling element 9 arranged above the opening 11 has slots 18 on both sides, the round pins 17 of the projections 6 of both contactors 1 and 3 being inserted. This results in rotary bearings via which the coupling element 9 is held and can be rotated about its center of gravity. In addition to the pointed beam ends, smd stops 20 are provided on the sides facing the housing 19 of the locking module 5, the function of which is described elsewhere.
FIG 2 zeigt die Stellung der Schütze 1 und 3 bzw. der Kon¬ taktträger 2 und 4 nach dem Einschalten der hier nicht darge¬ stellten Schließerkontakte im ungestörten Zustand. Entspre¬ chend dem Schaltweg der Kontaktträger 2 und 4 wird beim Ein¬ schalten auch daε Koppelelement 9 in gleicher Richtung nach unten bewegt und taucht dabei in die durch die gekreuzt lie¬ genden Balken 12 gebildete Öffnung 11 em. Die beεchriebene Schützsicherheitskombination ist in gleicher Weise für zu verriegelnde Schütze mit Öffnerkontakten anwendbar.2 shows the position of the contactors 1 and 3 or the contact carriers 2 and 4 after switching on the normally open contacts (not shown here) in the undisturbed state. Corresponding to the switching path of the contact carriers 2 and 4, the coupling element 9 is also moved downward in the same direction when it is switched on and is immersed in the opening 11 em formed by the crossed bars 12. The contactor safety combination described can be used in the same way for contactors to be locked with break contacts.
In FIG 3 ist der gestörte Zuεtand der Schützεicherheitskombi- nation während des Ausschaltvorgangs dargestellt. Der gestör¬ te Zustand beruht auf einer Verschweißung einer der Schlie¬ ßerkontakte 15 oder 16, wobei im hier vorliegenden Fall ein Schließerkontakt 16 des zweiten Schützes 3 verschweißt ist, so daß der zugehörige zweite Kontaktträger 4 hängen bleibt und der andere erste Kontaktträger 2 des ungestörten ersten Schützes 1 sich frei nach oben bewegt. Die Halterung des Kop¬ pelelements 9 über die Drehlager 17,18 ermöglicht eine solche Bewegung, bei der sich das Koppelglied 9 dreht und dessen na- senförmiger Vorεprung 10 an der Innenseite des einen Balkens 12 entlanggleitet. Der dabei auf den Balken 12 ausgeübte Druck kann aufgrund der drehbaren Lagerung der Balken 12 in Verbindung mit der Zugfeder 13 problemlos, d.h. ohne schädi¬ gende Beanspruchung aufgenommen werden.FIG. 3 shows the disturbed state of the contactor safety combination during the switch-off process. The disturbed state is based on welding one of the normally open contacts 15 or 16, in the present case a normally open contact 16 of the second contactor 3 being welded so that the associated second contact carrier 4 is caught and the other first contact carrier 2 of the undisturbed one first contactor 1 moves freely upwards. The mounting of the coupling element 9 via the rotary bearings 17, 18 enables such a movement in which the coupling member 9 rotates and its nose-shaped projection 10 slides along the inside of the one beam 12. The pressure exerted on the bar 12 can be due to the rotatable mounting of the bar 12 in Connection with the tension spring 13 can be taken up without any problems, ie without damaging stress.
FIG 4 zeigt die Stellung der Kontaktträger 2 und 4 sowie αes Koppelelements 9 nach Beendigung des Ausεchaltvorgangε. Der nasenforange Vorεprung 10 hintergreift das spitz zulaufende Ende des Balkens 12, das dem ungestörten ersten Schütz 1 zu¬ gewandt ist, und liegt zugleich auf dem einen der Anschläge 20 auf. Das auf diese Weise blockierte Koppelelement 9 ver- hindert em erneutes Einschalten des ersten Schützes 1. Ent¬ sprechend erfolgt auch eine Verriegelung des zweiten Schützeε 3, nachdem einer der Schließerkontakte 15 deε erεten Schützeε 1 verschweißt ist. Dies bedeutet, daß eine Freigabe nur dann erfolgt, wenn aus einem störungsfreien Zustand, d.h. nicht verschweißten Schließerkontakten 15 bzw. 16 heraus einge¬ schaltet wird.4 shows the position of the contact carriers 2 and 4 and the coupling element 9 after the end of the switching-off process. The nose-orange projection 10 engages behind the tapered end of the beam 12, which faces the undisturbed first contactor 1, and at the same time lies on one of the stops 20. The coupling element 9 blocked in this way prevents the first contactor 1 from being switched on again. Accordingly, the second contactor 3 is also locked after one of the normally open contacts 15 of the first contactor 1 is welded. This means that a release only takes place if from a trouble-free state, i.e. non-welded normally open contacts 15 or 16 is switched on.
In FIG 5 ist em Schaltplan der Schützsicherheitskombination abgebildet. Die Schließerkontakte 15 und 16 der Schütze 1 und 3 sind in Reihe geεchaltet . Demzufolge kann auch noch dann abgeεchaltet werden, wenn während oder nach dem Einεchalten an einem der Schütze 1 oder 3 Schließerkontakte verschweißen. Die Verriegelung ist so gestaltet, daß die Schütze unabhängig voneinander öffnen können. Der Fehler wird beim nächsten Ein- schaltvorgang zuverläsεig erkannt. Der Verdrahtungsaufwand beschränkt sich auf die direkte Anεteuerung der Spulen und die Verdrahtung der Freigabekreiεe. Durch die schützgerecnte Verdrahtung lεt eine Einschränkung der Daten der Einzelgeräte für die Kombination nicht notwendig.5 shows a circuit diagram of the contactor safety combination. The normally open contacts 15 and 16 of the contactors 1 and 3 are connected in series. Accordingly, it can also be switched off if 1 or 3 NO contacts weld to one of the contactors during or after switching on. The lock is designed so that the contactors can open independently. The error is reliably detected the next time the device is switched on. The wiring effort is limited to the direct control of the coils and the wiring of the enabling circuits. Due to the protection-calculated wiring, it is not necessary to restrict the data of the individual devices for the combination.
Der Verriegelungsbaustem 5 kann sowohl zwiεchen den Schützen (siehe FIG 6), auf der Frontseite (FIG 7) der Schütze, als auch unter den Schützen sitzen.The locking unit 5 can sit both between the shooters (see FIG. 6), on the front (FIG. 7) of the shooters, and under the shooters.
Die beschriebene Schützsicherheitskombination hat dabei noch den Vorteil, daß bei leichter Verschweißung eines Schützes die Möglichkeit besteht, daß das zweite Schutz beim Versucn des Einschaltens die Verεchweißung aufhebt. Hilfεschalter, Blöcke und anderes Zubehör können für die Schütze nach wie vor verwendet werden. The contactor safety combination described also has the advantage that if a contactor is lightly welded, there is the possibility that the second protection during testing switching on removes the welding. Auxiliary switches, blocks and other accessories can still be used for the contactors.

Claims

Patentansprüche claims
1. Schützsicherheitskombination mit mindestens zwei Schützen (1,3) und mit einer Wiederemschaltsperre durch gegenseitige Verriegelung der Schütze (1,3), d a d u r c h g e k e n n z e i c h n e t , daß die Wiedereinschaltsperre durch einen Vemegelungεbauεtein (5) realiεiert ist, der mit Kontaktträgern (2,4) der Schütze (1,3) lösbar verbunden ist.1. Contactor safety combination with at least two contactors (1,3) and with a reclosure lock by mutual locking of the contactors (1,3), characterized in that the reclosure lock is realized by a locking device (5), which with contact carriers (2,4) Sagittarius (1,3) is detachably connected.
2. Schützsicherheitskombination nach Anspruch 1, g e k e n n z e i c h n e t d u r c h lediglich zwei2. Contactor safety combination according to claim 1, g e k e n n z e i c h n e t d u r c h only two
Schütze .Sagittarius .
3. Schützεicherheitεkombmation nach Anεpruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , daß die lösbare Verbindung alε Steckverbindung auεgeführt ist.3. Protective safety combination according to claim 1 or 2, so that the detachable connection is designed as a plug-in connection.
4. Schützsicherheitεkombmation nach einem der vorangehenden Anεprüche, d a d u r c h g e k e n n z e i c h n e t , daß die Kontaktträger (2,4) jeweils eme Anformung (6) zur4. Schützsicherheitεkombmation according to one of the preceding claims, that a d u r c h g e k e n n z e i c h n e t that the contact carrier (2,4) each eme molding (6) for
Ankopplung an den Verriegelungsbaustem (5) aufweisen und die Anformungen (6) durch Auεnehmungen (7) m einer Gehäuεewand (8) der Schütze (1,3) hindurchragen.Have coupling to the locking system (5) and the projections (6) protrude through recesses (7) in a housing wall (8) of the contactors (1,3).
5. Schützεicherheitεkombmation nach einem der vorangehenden Anεprüche, d a d u r c h g e k e n n z e i c h n e t , daß der Verriegelungεbaustein (5) ein mit den beiden Anfor¬ mungen (6) gekoppeltes Koppelelement (9) aufweist, das bei Einschalten der Schütze (1,3) in ihrem ungestörten Zustand mit seinem nasenförmigen Vorεprung (10) in eine Öffnung (11) von einem Verriegelungsmechanismus (12,13) taucht.5. Schützεicherheitεkombmation according to one of the preceding claims, characterized in that the locking module (5) has a coupling element (9) coupled to the two conformations (6) which, when the contactors (1,3) are switched on in their undisturbed state with their nose-shaped projection (10) dips into an opening (11) of a locking mechanism (12, 13).
6. Schützsicherheitskombination nach Anspruch 5, d a d u r c h g e k e n n z e i c h n e t , daß die Off- nung (11) durch zwei εcherenförmig gekreuzt liegende, drehbar gelagerte Balken (12) gebildet ist, die durch eine Zugfeder (13) miteinander verbunden sind. 6. Contactor safety combination according to claim 5, characterized in that the opening (11) is formed by two ε scissor-like crossed, rotatably mounted beams (12) which are interconnected by a tension spring (13).
7. Schützsicherheitskombination nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , daß das Koppelelement (9) über Drehlager (17,18) an den Anformungen (6) gehalten ist.7. Contactor safety combination according to one of the preceding claims, d a d u r c h g e k e n n z e i c h n e t that the coupling element (9) via rotary bearings (17, 18) on the projections (6) is held.
8. Schützsicherheitskombination nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , daß das Koppelelement (9) bei Ausεchaltung der Schütze (1,3) nach Verεchweißen eineε der Kontakte (15 oder 16) sich unter Drehung um seinen Schwerpunkt auε der Öffnung (11) herauεbe- wegt und einen der beiden Balken (12) hintergreift, wodurch die Einschaltbewegung blockiert wird.8. Contactor safety combination according to one of the preceding claims, characterized in that the coupling element (9) when the contactors (1,3) are switched off after welding one of the contacts (15 or 16) with rotation around its center of gravity out of the opening (11). moves and engages behind one of the two bars (12), whereby the switch-on movement is blocked.
9. Schützεicherheitεkombmation nach einem der vorangehenden Anεprüche, d a d u r c h g e k e n n z e i c h n e t , daß die Anformungen (6) an den Kontaktträgern (2,4) durch die Gehäuεeεeitenwände (8) der Schütze (1,3) hindurchragen und mit dem zwischen den Schützen (1,3) liegenden Verriegelungs¬ baustem (5) gekoppelt sind.9. contactor safety combination according to one of the preceding claims, characterized in that the projections (6) on the contact carriers (2,4) protrude through the side walls (8) of the contactors (1,3) and with which between the contactors (1,3) horizontal locking construction (5) are coupled.
10. Schützsicherheitskombination nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , daß die Schütze (1,3) über einen frontseitig angeordneten Vemegelungsbauεtem (5) miteinander gekoppelt smd. 10. Contactor safety combination according to one of the preceding claims, d a d u r c h g e k e n n z e i c h n e t that the contactors (1,3) coupled smd via a Vemegelungsbauεtem (5) arranged on the front.
EP96946017A 1995-12-06 1996-11-26 Contactor safety combination Expired - Lifetime EP0865661B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19545540A DE19545540C2 (en) 1995-12-06 1995-12-06 Contactor safety combination
DE19545540 1995-12-06
PCT/DE1996/002268 WO1997021238A2 (en) 1995-12-06 1996-11-26 Contactor safety combination

Publications (2)

Publication Number Publication Date
EP0865661A2 true EP0865661A2 (en) 1998-09-23
EP0865661B1 EP0865661B1 (en) 1999-08-18

Family

ID=7779365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96946017A Expired - Lifetime EP0865661B1 (en) 1995-12-06 1996-11-26 Contactor safety combination

Country Status (5)

Country Link
US (1) US6054656A (en)
EP (1) EP0865661B1 (en)
CN (1) CN1063574C (en)
DE (2) DE19545540C2 (en)
WO (1) WO1997021238A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101246791B (en) * 2007-02-12 2011-04-13 浙江正泰电器股份有限公司 Low-voltage electrical apparatus with mechanical interlock device
CA2674372C (en) * 2008-07-30 2016-02-09 Gen-Tran Corporation Automatic transfer switch

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2359606A (en) * 1942-02-13 1944-10-03 Fed Electric Prod Co Electric switch with mechanical interlock
US2604796A (en) * 1950-09-08 1952-07-29 Westinghouse Electric Corp Interlock
US3391257A (en) * 1967-02-14 1968-07-02 Westinghouse Electric Corp Maintained-position interlocking mechanism for interlocking a pair of pushbutton switches
US3736538A (en) * 1972-03-28 1973-05-29 Westinghouse Electric Corp Electric control devices with mechanical interlock
US3953697A (en) * 1973-11-28 1976-04-27 Teichert Allen L Dual fulcrum switch
DE2440361B2 (en) * 1974-08-23 1977-01-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt MECHANICAL LOCKING OF MOVING PARTS
US4544814A (en) * 1984-01-19 1985-10-01 Eaton Corporation Mechanical interlock for contactors
DE3602692A1 (en) * 1986-01-30 1987-08-06 Ako Werke Gmbh & Co Reclosing lockout of a relay

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9721238A2 *

Also Published As

Publication number Publication date
DE19545540C2 (en) 1998-04-09
CN1063574C (en) 2001-03-21
DE59602825D1 (en) 1999-09-23
DE19545540A1 (en) 1997-06-12
CN1202267A (en) 1998-12-16
US6054656A (en) 2000-04-25
EP0865661B1 (en) 1999-08-18
WO1997021238A3 (en) 1997-08-14
WO1997021238A2 (en) 1997-06-12

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