EP0244276B1 - Elektrischer Schalter für Schutzgerät, wie Schutzschalter - Google Patents

Elektrischer Schalter für Schutzgerät, wie Schutzschalter Download PDF

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Publication number
EP0244276B1
EP0244276B1 EP87400584A EP87400584A EP0244276B1 EP 0244276 B1 EP0244276 B1 EP 0244276B1 EP 87400584 A EP87400584 A EP 87400584A EP 87400584 A EP87400584 A EP 87400584A EP 0244276 B1 EP0244276 B1 EP 0244276B1
Authority
EP
European Patent Office
Prior art keywords
pseudo
movement
fixed contact
switch
electric switch
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
EP87400584A
Other languages
English (en)
French (fr)
Other versions
EP0244276A1 (de
Inventor
Elie Belbel
Félix Lameyre
Michel Lauraire
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.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique SA
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 La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Publication of EP0244276A1 publication Critical patent/EP0244276A1/de
Application granted granted Critical
Publication of EP0244276B1 publication Critical patent/EP0244276B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • H01H13/18—Operating parts, e.g. push-button adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
    • H01H89/08—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device with both devices using the same contact pair
    • H01H89/10—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device with both devices using the same contact pair with each device controlling one of the two co-operating contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/32—Insulating body insertable between contacts

Definitions

  • the invention relates to an electrical switch device in an insulating housing, in particular for a circuit breaker device, in which each of the two conductive parts of the switch which are intended to be applied against one another or to be separated, can be moved independently of each other, depending on whether the opening operation is operated using a remote control electromagnet placed in the housing, or whether the opening operation results from a command manual or automatic operation of a mechanism triggered by monitoring means capable of detecting an overcurrent in the circuit of the switch.
  • Such devices are for example known from European patent application No. 103 022, which describes an industrial type device where a movable switch contact can be opened either by manual control or by the triggering of an armed mechanism; the movable armature of an electromagnet is here indirectly associated with an intermediate triggering mechanism so as to operate a remote-controlled opening, independently of the other possible modes of opening the circuit.
  • the present invention proposes to provide a switch device whose constitution meets that which is mentioned above, and where measures will be taken to make it benefit from the advantageous properties which are due to the implementation of a screen. able to quickly destabilize the electric arc appearing when opening.
  • an energy accumulator mechanism 3 In an insulating housing 2 is placed an energy accumulator mechanism 3 generally using the compression of springs not shown; an external operating member 4 allows this mechanism to take an armed state A, or disarmed D, to operate the voluntary closing and respectively opening of a switch 5, to the movable contact 6 of which it is mechanically connected by means 7 isolated transmissions.
  • the movable contact cooperates with a pseudo-fixed contact 8, which is carried by an insulated movable support 9 which can move between a working position T and a rest position R.
  • This possible displacement results from the presence of motion transmission means 10 which connect the support to the movable frame 11 of an electromagnet 12 of which only the coil 13 has been shown; the latter is connected to connection terminals 14, 15 by which it is possible to operate its excitation and its de-excitation.
  • a first flexible conductor 17 connects the pseudo-fixed contact 8 to an input terminal of the network 18 to allow the movements of the support, so that electrical continuity is ensured when the support takes the corresponding working position; when the electromagnet itself takes its rest position R, for example by the action of a return spring 37, the two contacts are separated.
  • the movable contact is in turn connected by a second flexible conductor 19 to a portion 20 of the internal circuit 21 comprising one or more overcurrent detectors of different types, for example a coil 22 associated with a magnetizable plunger, paddle or striker core 23 and a bimetallic strip 24; the latter is itself connected to an output terminal 25 going to the load not shown.
  • a coil 22 associated with a magnetizable plunger, paddle or striker core 23 and a bimetallic strip 24 the latter is itself connected to an output terminal 25 going to the load not shown.
  • the bimetallic strip and / or the striker operate by means of unlocking means 26 an automatic triggering of the mechanism 3 which then takes its disarmed state D.
  • a breaking chamber 27 is associated with the switch so that arcs developed during the opening of the switch are quickly extinguished.
  • FIG. 2 shows a first embodiment 5a of the switch 5 in which the parts having functions identical to those just described, bear the same references.
  • the support 9 of the pseudo-fixed contact is represented here by an insulating sector 30 which can oscillate around a pivot 31 in the direction of the arrow G, when the electromagnet is, for example, de-energized. This rotation therefore brings the pad 32 of the movable contact 6 onto an insulating portion 33 of the support 9, while the periphery of the sector carrying this pseudo-fixed contact moves under the internal surface 56 of a partition 36.
  • the pseudo-fixed contact 8 here takes the form of a pellet of curved shape, the radius of which corresponds to that of the surface 33 and which is optionally extended by a concentric surface 35.
  • the wall or fixed partition 36 of the housing having a root 36 ′ and a curved shape placed substantially concentrically with the pivot 31, extends to an end 38 close to the meeting area 39 of the contact pads; this partition can also be extended in the same way by a portion 40 shown in dotted lines, and an opening 41 then surrounds the area 39.
  • An insulating rotary part 42 able to oscillate around a pivot 43 adjacent to the pivot 31 or possibly concentric with it, comprises an arm 44 in the form of a sector, and a portion of cylinder constituting a thin screen 45 which is placed at the above the partition 36 opposite the external face 46 thereof opposite the pivot; the arm of this part 42 has on the opposite side 54 an actuation point such than 47, or a percussion surface such as 48, which can receive one a movement transmission part 49, or the other the end of a striker 50.
  • This striker 50 or this transmission part 49 can be constituted by the striker which is mentioned at 23 in FIG. 1, or indirectly transmit the movements of the latter.
  • the circulation of a very intense current in the coil 22 causes their displacement and a drive in the direction of arrow J on the screen; such displacement is only possible if the contact pads are already separated by a sufficient distance to allow rapid passage of the end 51 of the screen.
  • a hinge point 52 connects the support 9 to a control rod 10 and the arm 42 here has a clearance 53 allowing it not to meet the pivot 31, see also FIG. 8.
  • the means used to operate the displacement of the pseudo-fixed contact in particular the electromagnet, can be deactivated so that a displacement in the direction of the arrow G of this pseudo-fixed contact is effected immediately after the appearance of a current fault which confirms the automatic opening of the switch.
  • the movements of the pseudo-fixed contact and of the screen are executed in the opposite direction (G, and respectively J), when a current fault occurs and the separation of the contacts operated by the support 30 is effected with friction tangentially, which can be advantageous for shearing areas of these possibly welded pads.
  • the movements of the insulating support piece 61 of the pseudo-fixed contact 8 b are guided by a pivot 62, movable parallel to itself, and comprising for example two coaxial pins 63, 64 each capable of moving in one of two parallel and adjusted guide grooves 65, 66, see also FIG. 6.
  • Each groove such as 65 comprises a first rectilinear portion 67 which is extended by a second curved portion 68; alternatively, a dotted groove 70 and inclined at an angle ⁇ relative to a straight line ⁇ passing through one of the pins 62 or articulation 71 and through the contact area of the contacts, could also be used.
  • This connecting rod which circulates substantially parallel to the straight line ⁇ by means guide not shown, is in the position shown F illustrated when the armature of the electromagnet is applied against its cylinder head, and vice versa in position O.
  • a tension spring such as 73 can be coupled to a point 74 of the support which is opposite the articulation relative to the pivot and to the housing 2 to serve as a return spring to the frame.
  • the contact support 61 When the connecting rod moves down in the direction of arrow L, after the electromagnet has de-energized, the contact support 61 first moves parallel to itself in the same direction when the pin travels in the portion 67, which operates a radial separation of the contact pads; this first parallel stroke is followed by a second stroke, in another direction inclined by an angle ⁇ , during which the pin moves in the portion 68 and communicates to this support a rotation of direction G. The movement therefore makes benefit from the contacts of a separation without friction, followed by a possible elongation of the arc.
  • An additional screen 75 comparable to the thin screen 45 moves here in direction J in a manner comparable to that which has been described above by passing over a fixed insulating partition 36 b .
  • the insulating support 81 of pseudo-fixed contact 8 c also has the shape of a sector having a central region 84 which is subjected to the action of a return spring in compression 83 placed between it and the housing 2 c .
  • This support also comprises one or two substantially radial grooves 86, 86 ′, which are crossed by a fixed guide pin 82 placed transversely, and an articulation point 91 linked to a connecting rod 92, see also FIG. 7.
  • a thin insulating screen 101 carried by a sector 102 is pivoted around a pin 103 and has a spout 104 capable of receiving a flange 105, directly or indirectly linked to a striker (not shown), which is attracted by a coil crossed by very strong currents when short-circuit currents appear.
  • a pseudo-fixed contact support 98 d 8 here again has a groove 106, a hinge point 107 linked to a connecting rod 112, a bearing face 108 meeting a fixed stop 111 and a central region 109 cooperating with a spring of compression 110.
  • the screen 101 is placed in a half-space placed to the left of the right ⁇ , and will move also in direction G during an attraction of the flange caused by that of the striker.
  • this direction is here the same as that according to which the support 106 will pivot when the connecting rod 112 will move down the figure to pass from its position F to its position O.
  • the groove 106 could be given a slightly inclined orientation relative to the straight line ⁇ .

Landscapes

  • Breakers (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Electromagnets (AREA)

Claims (9)

1. Elektrischer Schalter in einem Isoliergehäuse, insbesondere für ein Unterbrechergerät, in dem eines der beiden leitenden Elemente des Unterbrechers, die entweder aneinander anliegen oder voneinander getrennt sein sollen, entlang verschiedener Bahnen verschoben werden kann, je nachdem der Öffnungsvorgang mittels eines, im Gehäuse angeordneten Fernsteuer-Elektromagneten bewirkt wird oder die Öffnung durch manuelle Steuerung oder das automatische Funktionieren eines durch Überwachungsmittel zur Erfassung von Überstrom im Unterbrecherkreis ausgelösten Mechanismus bewirkt wird, dadurch gekennzeichnet, dass:
- ein pseudo-ortsfester Kontakt (8), der von der Peripherie eines isolierten, schwenkbaren Abschnittes (9) getragen wird, der mit dem Anker (11) des Fernsteuer-Elektromagneten (12) verbunden ist und auf dem der vom Mechanismus (3) gesteuerte bewegliche Kontakt (6) radial aufliegt, bei Erregung des besagten Elektromagneten (12) seitlich verschoben wird, sodass er sich dann gegenüber der Unterseite (56) einer im wesentlichen konzentrischen Isolierwand (36) befindet, die in der Nähe der Peripherie des besagten Abschnitts (9) angeordnet ist.
- während ein schwenkbarer Isolierhalter (42) sich im wesentlichen konzentrisch zum Abschnitt (9) bewegt, um zwischen die beiden schon getrennten Kontakte (8a, 6a) einen vom ihm getragenen Isolierschirm (45) zu schieben, der über besagte Zwischenwand (36) hinwegbewegt wird.
2. Elektrischer Schalter nach Anspruch 1, dadurch gekennzeichnet, dass die Verschiebungen des pseudoortsfesten Kontakthalters (9) nur aus Schwenkungen bestehen und einen Isolierabschnitt (33) dieses Halters durch eine Tangentialbewegung gegenüber einem beweglichen Kontakt (6) anordnen.
3. Elektrischer Schalter nach Anspruch 1, dadurch gekennzeichnet, dass die Verschiebungen des Halters für die pseudo-ortsfesten Kontakte (8b, 8c, 8d) aus einer ersten, nicht tangentiellen Verschiebung und einer Winkelschwenkbewegung bestehen.
4. Elektrischer Schalter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Bewegung (J), welche der Isolierschirm (45) bei einer automatischen Öffnung des Schalters (5a) ausführt, und diejenige (G), welche der Halter (42) für den pseudo-ortsfesten Kontakt (8a) bei einer ferngesteuerten Öffnung ausführt, im entgegengesetzten Sinne verlaufen.
5. Elektrischer Schalter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Bewegung des Isolierschirms (101) und die des Halters für den pseudo-ortsfesten Kontakt (102) in gleicher Richtung (G) wie die automatische oder ferngesteuerte Öffnung des Schalters (5d) verlaufen.
6. Elektrischer Schalter nach einem der Ansprüche 1, 3, 4 oder 5, dadurch gekennzeichnet, dass der Halter für den pseudoortsfesten Kontakt (102, 61, 81) seine Vielfachbewegung in relativer Zusammenarbeit mit Rillen (70, 106, 66, 86) und senkrecht zur Bewegungsebene angeordneten Führungsspindeln, -Fingern oder -Stiften (103, 62, 82) ausführt, wobei diese Rillen oder Stifte nach Wahl vom Gehäuse (2) oder Kontakthalter getragen werden können.
7. Elektrischer Schalter nach Anspruch 6, dadurch gekennzeichnet, dass die Rillen (86, 106) gradlinig verlaufen und eine Fläche (94, 108) des Halters für den pseudo-ortsfesten Kontakt bei der ersten Verschiebung auf einen ortsfesten Anschlag (93, 111) trifft, der die anfängliche Kippbewegung einleitet.
8. Elektrischer Schalter nach Anspruch 6, dadurch gekennzeichnet, dass die Rillen (66) einen ersten gradlinigen Abschnitt (67) aufweisen und einen zweiten Abschnitt (68), der in anderer Richtung verläuft.
9. Elektrischer Schalter nach Anspruch 6, dadurch gekennzeichnet, dass die Rillen (70) gradlinig verlaufen und mit der ursprünglichen Verschieberichtung (Δ), die einem Schwenkpunkt (71) des Halters (61) des pseudo-ortsfesten Kontaktes von einer Steuerwelle (72) mitgeteilt wird, einen gewissen Winkel (α) bilden.
EP87400584A 1986-04-04 1987-03-17 Elektrischer Schalter für Schutzgerät, wie Schutzschalter Expired - Lifetime EP0244276B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8604840 1986-04-04
FR8604840 1986-04-04

Publications (2)

Publication Number Publication Date
EP0244276A1 EP0244276A1 (de) 1987-11-04
EP0244276B1 true EP0244276B1 (de) 1991-06-05

Family

ID=9333898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400584A Expired - Lifetime EP0244276B1 (de) 1986-04-04 1987-03-17 Elektrischer Schalter für Schutzgerät, wie Schutzschalter

Country Status (10)

Country Link
US (1) US4751483A (de)
EP (1) EP0244276B1 (de)
JP (1) JPS62241232A (de)
KR (1) KR900002615B1 (de)
AU (1) AU606858B2 (de)
BR (1) BR8701560A (de)
CA (1) CA1263469A (de)
DE (1) DE3770516D1 (de)
ES (1) ES2022388B3 (de)
ZA (1) ZA872450B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU604642B2 (en) * 1985-08-23 1991-01-03 Westinghouse Electric Corporation Load control apparatus
JP2538991B2 (ja) * 1988-06-09 1996-10-02 松下電工株式会社 リモ―トコントロ―ル式回路しゃ断器
DE3823790A1 (de) * 1988-07-14 1990-01-18 Asea Brown Boveri Elektrisches installationsgeraet mit kontakttrennwand
DE4234065C1 (de) * 1992-10-09 1993-12-02 Eti Elektroelement Dd Schaltgerät
KR101771465B1 (ko) * 2011-07-25 2017-09-06 엘에스산전 주식회사 가스절연 개폐장치

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0186546A1 (de) * 1984-11-26 1986-07-02 Telemecanique Elektrischer Schalter mit Schirm

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3123105A1 (de) * 1981-06-11 1982-12-30 Hans 8100 Garmisch-Partenkirchen Langmatz "lastschalter"
FR2540665B1 (fr) * 1983-02-04 1987-02-27 Telemecanique Electrique Dispositif interrupteur muni d'un ecran isolant s'interposant entre les contacts lors de la coupure et de moyen de cisaillement de l'arc entre cet ecran et une paroi isolante
FR2540666B1 (fr) * 1983-02-04 1986-10-10 Telemecanique Electrique Interrupteur limiteur
FR2563939B1 (fr) * 1984-05-03 1988-03-18 Telemecanique Electrique Dispositif interrupteur a ecran de coupure d'arc
IT1175633B (it) * 1984-08-14 1987-07-15 Cge Spa Struttura di contatti di interruttore a limitazione di corrente manovabile sia manualmente che mediante azionatore elettromagnetico
US4598263A (en) * 1984-11-13 1986-07-01 Westinghouse Electric Corp. Magnetically operated circuit breaker
FR2575589B1 (fr) * 1984-12-28 1987-02-06 Telemecanique Electrique Interrupteur electrique a ecran
US4660009A (en) * 1985-07-29 1987-04-21 Westinghouse Electric Corp. Modular integral circuit interrupter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0186546A1 (de) * 1984-11-26 1986-07-02 Telemecanique Elektrischer Schalter mit Schirm

Also Published As

Publication number Publication date
JPS62241232A (ja) 1987-10-21
BR8701560A (pt) 1988-01-19
CA1263469A (fr) 1989-11-28
AU7063787A (en) 1987-10-08
ZA872450B (en) 1987-11-25
AU606858B2 (en) 1991-02-21
KR870010583A (ko) 1987-11-30
EP0244276A1 (de) 1987-11-04
DE3770516D1 (de) 1991-07-11
US4751483A (en) 1988-06-14
ES2022388B3 (es) 1991-12-01
KR900002615B1 (ko) 1990-04-20

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