EP0403329A1 - Schalter mit automatischer Auslösung, insbesondere Schutzschalter und Fehlerstromschutzschalter - Google Patents

Schalter mit automatischer Auslösung, insbesondere Schutzschalter und Fehlerstromschutzschalter Download PDF

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Publication number
EP0403329A1
EP0403329A1 EP90401431A EP90401431A EP0403329A1 EP 0403329 A1 EP0403329 A1 EP 0403329A1 EP 90401431 A EP90401431 A EP 90401431A EP 90401431 A EP90401431 A EP 90401431A EP 0403329 A1 EP0403329 A1 EP 0403329A1
Authority
EP
European Patent Office
Prior art keywords
contact
pawl
contact carrier
rod
movable
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.)
Withdrawn
Application number
EP90401431A
Other languages
English (en)
French (fr)
Inventor
Denis Deckert
Jean-Marie Roiatti
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.)
Hager Electro SAS
Original Assignee
Hager Electro SAS
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 Hager Electro SAS filed Critical Hager Electro SAS
Publication of EP0403329A1 publication Critical patent/EP0403329A1/de
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • 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
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • 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 electric devices with automatic cut-off, in particular to circuit breakers or differential circuit breakers, of the type having a lock mechanism comprising, between a rotary actuating member and a tilting contact carrier (s) on which is mounted at at least one movable contact cooperating with a fixed contact and which is biased by a first spring in the direction of opening or separation of the movable contact relative to the fixed contact, a toggle and ratchet mechanism capable, on the one hand, when this mechanism is tensioned, to transmit the movement of the operating member to the contact carrier (s) both in the opening direction and in the opposite direction or closing direction, and on the other hand, at the time where this mechanism is relaxed by trigger means acting independently of the operating member on the pawl, causing the return of the contact carrier (s) from its closed position to its position opening, this mechanism being arranged so as to allow the operating member to rearm the device, that is to say to tighten the mechanism by bringing it back from its open position after the release to its position normal opening, after cessation of
  • a first objective of the invention is to produce such an apparatus, in particular of the "phase + neutral" type, that is to say having a movable phase contact and a movable neutral contact, the speed and reliability of which separation of movable contacts from fixed contacts are particularly high.
  • Another object of the invention is to produce such an apparatus, the movable contact lock mechanism of which is particularly well suited to application to circuit-breakers of the "phase + neutral" type.
  • Yet another objective of the invention is to produce such a device having great simplicity of manufacture and assembly.
  • the invention relates to an apparatus, of the type defined above, which is characterized in that the trigger lever of the pawl is articulated in an intermediate location to present a lower arm and an upper arm, the lower arm being capable of being actuated by said trigger means and the upper arm then being capable, shortly after actuation of the pawl, of pushing the movable contact (s) and the contact carrier (s) into the open position around their ( s) axis (s), with increased angular speed.
  • the trigger lever is preferably substantially pivoted in its central part, its lower end, that is to say opposite to that which carries the finger, being, preferably, shaped in the form of a fork, to be driven by the disjunction member, for example, a disjunction coil core, preferably by traction provided by a relief or enlarged head of a rod extending the core. It is thus easy to at least double the speed of contact opening.
  • the trigger lever can receive the rod capable of being actuated by a thermal disjunction bimetallic strip.
  • the contacts each have a window into which a finger of the trigger lever penetrates, which can thus push the contact for tearing off during disjunction when the finger abuts against the end of the window, while the pawl, mounted, preferably around the same axis, has a portion extending between the two tabs of the contact carrier (s) to come in the vicinity of the end of the trigger lever which carries the fingers
  • the contact carrier (s) has, at its upper part, that is to say on the side where the operating member is located and which is opposite the base used for fixing the device, a thrust surface inclined in a direction favoring the escape of the second end of the connecting rod, while the pawl, preferably articulated on the same axis as the contact carrier (s), has a latching surface substantially oriented towards its axis in a tangential direction to normally prevent the escape of the connecting rod and towards its lower part, an extension capable of being driven, in the direction of release of the toggle joint, by one end of the trigger lever.
  • the two phase and neutral circuits are completely separated by a central partition in the housing of the device.
  • the contact carrier (s) then advantageously has an enlarged upper head from which extend, in the direction of the base of the device, two legs capable of receiving, on either side, each time a movable contact.
  • the enlarged head of the contact carrier has a lumen in which one end of the connecting rod can move, remaining guided, this lumen comprising said inclined thrust surface which is followed by a part of lumen allowing the escape of the end of the rod which remains however guided for its automatic return to the initial opening position.
  • the movable contacts are preferably articulated practically on the pivot axis of the contact carrier (s) with a slight clearance allowing them thanks to a point of support at level of the head of the contact carrier (s), to move at the end of the closing stroke relative to the contact carrier (s) to ensure pressure and contact wear compensation.
  • the device shown is of the phase + neutral circuit breaker type, that is to say having two internal circuits disposed respectively between two pairs of terminals, namely a phase circuit and a neutral circuit with, in each of the circuits, a movable contact. and a fixed contact.
  • the housing 1 of the device is represented by its silhouette and comprises a base 2 provided with usual means of fixing on a rail and, on the opposite, a top 3.
  • the two circuits are accessible in the usual way by cage terminals. 4, 5 for the phase circuit and 6, 7 for the neutral circuit.
  • the phase and neutral terminals are respectively shifted in height for the purpose of polarization.
  • the phase circuit comprises, from terminal 4, a disjunction coil coil breech 8 in the form of a cage, obtained from a single piece cut and folded and having an extension 9 integrating into terminal 4, this cylinder head electrically continuing through the fixed contact 10 isolated from the cylinder head 8 then the mobile contact 11 capable of approaching or deviating from the fixed contact, the mobile contact being mechanically and electrically secured to a deformable and conductive braid 12 connected to a end of a thermal disjunction bimetal 13 fixed on a conductive strip 14, an extension 15 of which is integrated in the other phase terminal 5.
  • These disjunction means are all located on the side of the base 2 of the housing.
  • the cylinder head 8 contains, mounted inside, a coil 16 whose end, on the side of the terminal 4, is welded to the cylinder head and whose other end 17 appears through a notch opening into a circular opening of the yoke 8 so as to be able to be welded to a ring 18 forming one of the ends of the folded blade constituting the fixed contact 10, the other elongated end 19 of which forms a conventional electrode for electric switching of the arc with a extinguishing chamber of the usual arc.
  • the ring 18 is fixed on the yoke 8, with the interposition of an insulating part coming from the insulating tube 16b, concentrically with the circular opening of the yoke through which the rod 20 can pass which extends a mobile magnetic core 21 capable, when the coil 16 is excited, of move in the direction tending to bring the rod 20 into the coil.
  • the rod 20 ends with a flattened head 22.
  • the position of the bimetal strip can be adjusted in the usual way by an adjustment screw 23 passing through a nut 24 immobilized in the housing to come to cooperate with the part opposite the part 14.
  • the neutral circuit comprises, for its part, a fixed contact 25 including an extension 26, running along the base of the housing, is integrated in the terminal 6 passing under the yoke 8 which occupies substantially the entire width of the housing , the contact 25 further comprising an extension 27 similar to the extension 19 and intended to cooperate with an arc extinguishing chamber.
  • the circuit continues with the neutral movable contact 28 also connected to a flexible braid 29 continuing with a conductive blade 30 integrating with the terminal 7.
  • the various fixed parts listed are maintained in the housing 1 advantageously formed of two half-housings separated by a wall in the median plane and comprising, inside them, the reliefs and bosses necessary to receive and immobilize the parts.
  • the locking mechanism of the device comprises an operating member 31 pivoted in the housing in the middle of its top 3 and having an actuating lever 32 emerging outside through a lumen from the top of the housing.
  • the articulation axis of this operating member consists of a cylindrical passage 33 capable of pivoting on two fixed pivots penetrating the passage on either side and carried by the half-housings forming the housing 1.
  • the actuating member also comprises towards one of the sides an extension pierced with a passage 34 in which can come articulate one of the two end branches of a short U-shaped link 35.
  • the mechanism also includes a contact carrier 36 made of molded insulating material and having an upper transverse head 37 from which extend down two legs 38 leaving between them a space and each carrying a pivot 39, the transverse head 37 having an elongated lumen 40, the shape of which will appear better in FIGS. 1 and 2, and which receives the second end arm of the connecting rod 35.
  • the lumen 40 has a short part approximately tangential to the pivot 39, then a rising part characterized by an inclined thrust surface 41.
  • the lumen 40 is then extended by a new, roughly tangential part, the assembly light allowing the guided movement inside, of the end of the connecting rod 35.
  • the lower surface of the lumen 40, on each of the branches 38, is determined by a thickening of the tab at this level, this thickening having a recess 42 oriented towards the corresponding pivot 39.
  • This recess 42 receives the upper end 43 of the movable contacts 11, respectively 28, which also each have a slightly oblong hole 44 allowing the passage of the pivots 39 of the contact carrier so that it is understood that the movable contacts 11, 28 , mounted on the contact carrier, can slightly pivot around their top 43 by resting in their respective recesses 42, their angular movement being limited by the small possible movement on the pivots 39 in the oblong holes 44.
  • the movable contacts have still on their edge, and a little above the oblong holes 44, centering reliefs 45 allowing the centering and the support each time of a powerful spring 46 which ensures, in a manner known per se, both the contact pressure when the contacts are in the closed position and the recall of the contacts in the opening direction.
  • the movable contacts 11, 28 also have, at a certain distance below the oblong holes 44, substantially rectangular holes 47, after which they are extended by the actual contact tail to which the braid 29 is fixed, the contacts having still, on the other side, a long nose 48, extending in the vicinity of the arc extinguishing chambers.
  • a pawl 49 having the general shape of a lever with two branches located in the extension of one another, on either side of a notch of circular shape 50 allowing its mounting on the hub 61, the upper arm of the pawl 49 ending in the pawl spout 51 whose lower surface is practically tangential with respect to the geometric pivot axis common to the pawl and to the contact carrier.
  • a hole 52 makes it possible to receive the curved end of a weak circular spring 53 housed in a groove in one of the legs 38 and the other radially curved end of which is received in a corresponding notch opening on the groove of the tab 38. This spring tends to recall the pawl anticlockwise in FIG. 1.
  • the end 54 of the other lower arm of the pawl 49 projects downwards under the end of the contact carrier 36 so as to come to cooperate with a trigger lever 55 carrying, in its center, a pivot 56 allowing its mounting rapid, in pivoting, in a suitable hole in the median insulating wall, the upper arm of the trigger lever 55, which is slightly offset relative to the median plane of the housing, having on both sides of this plane two transverse fingers 57 and 58 which, when the various parts of the mechanism are mounted, penetrate respectively into the rectangular holes 47 of the movable contacts 11, 28.
  • the most long, 58 can intercept the lower end 54 of the pawl 49.
  • the lower arm of the trigger 55 which extends downwards, has a lateral fork 59, through which the rod 20 can pass, but whose spacing is sufficiently weak to prevent the passage of the head 22 which terminates the rod 20. Furthermore, the base of the fork has, on the other side, a hole in which the shortest branch of a rod can come U shape with uneven branches 60 which, suitably guided in a sliding manner by guide surfaces of the housing, extends towards the free lower end of the bimetallic strip 13.
  • the lower and upper arms of the trigger lever being of substantially equal lengths, the fingers 57, 58 will move at the same speed as the plunger rod 20 with its head 22.
  • the windows 47 being located approximately halfway between the pivots 39 of the contact carrier, on which the movable contacts pivot, and the contact points 62 not far from the path of the rod 20, the speed of opening of the movable contacts at contact point 62 will be doubled compared to that which would result from a direct drive of the contacts by the rod 20.
  • the operation is as follows: starting from the open position, that is to say from open contacts, represented in FIG. 1, it is made to rotate clockwise, by gripping the lever 32, the operating member 31. This doing so, the connecting rod 35, after having slid slightly in the slot 40, and being prevented from escaping by the pawl 49 shown in hatched lines in FIGS. 1 and 2, abuts on the thrust surface 41 of the slot 40 so that, very quickly, the contact carrier 36 is forced to pivot despite the resistance of the springs 46 whose thrust, applied to the two movable contacts 11, 28, is transmitted by these to the contact carrier at the level of the support of the heads 43 in the recesses 42 of the contact carrier.
  • the pawl 49 held in its relative position relative to the contact carrier by the spring 53, comes, by its end 54, almost in contact with the finger 58 of the trigger 55.
  • the latter has its forked end 59 in the vicinity of the enlarged head 22 of the rod 20.
  • the rod 60 inserted in a hole in the trigger 55, extends in the vicinity of the bimetallic strip 13.
  • the angular speed of the fingers 57, 58 is in a 1/1 ratio with the speed of the fork 59, that is to say the speed of movement of the plunger core.
  • the fingers 57, 58 come into contact with the ends of the holes 47, they drive the movable contacts with an angular speed twice that which they would have if they were actuated at the level of the trajectory of the disjunction rod 20, of the fact that the windows are located approximately equidistant from the pivot point 39 and the physical contact point 62 of the movable and fixed contacts.
  • the assembly is found in the open position of Figure 1.
  • Triggering by progressive overload of the protected circuit is also obtained by the deformation of the bimetallic strip 13 which, bearing on the rod 60, will push the trigger lever 55 counterclockwise, thus ensuring the release of the toggle joint and the opening contacts by the springs 46.
  • the housing in which the mechanism which has just been described is housed may advantageously have a central insulating wall separating the phase part from the neutral part of the device.

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EP90401431A 1989-06-16 1990-05-30 Schalter mit automatischer Auslösung, insbesondere Schutzschalter und Fehlerstromschutzschalter Withdrawn EP0403329A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8908027A FR2648615B1 (fr) 1989-06-16 1989-06-16 Perfectionnements aux interrupteurs a coupure automatique, notamment aux disjoncteurs et disjoncteurs differentiels
FR8908027 1989-06-16

Publications (1)

Publication Number Publication Date
EP0403329A1 true EP0403329A1 (de) 1990-12-19

Family

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Application Number Title Priority Date Filing Date
EP90401431A Withdrawn EP0403329A1 (de) 1989-06-16 1990-05-30 Schalter mit automatischer Auslösung, insbesondere Schutzschalter und Fehlerstromschutzschalter

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EP (1) EP0403329A1 (de)
FR (1) FR2648615B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0570647A1 (de) * 1992-05-13 1993-11-24 Hager Electro S.A. Schaltschloss für Schutzschalter und Schutzschalter, mit diesem integriert
ES2047445A2 (es) * 1992-04-13 1994-02-16 Securel Sa Disyuntor automatico.
EP1643530A1 (de) * 2004-10-01 2006-04-05 Hager Electro S.A. Regulierbarer Antrieb für eine Stromleitung-Schutz-Vorrichtung
CN103715029A (zh) * 2012-10-05 2014-04-09 施耐德电器工业公司 电保护设备的操作装置及包括该操作装置的电保护设备
CN108288552A (zh) * 2018-02-24 2018-07-17 浙江正泰电器股份有限公司 转换装置及自动转换开关电器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7632486U1 (de) * 1976-10-18 1977-01-27 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer Leitungsschutzschalter für Überstrom- und Kurzschlußstromauslösung
DE3007243A1 (de) * 1980-02-27 1981-09-03 Brown, Boveri & Cie Ag, 6800 Mannheim Fehlerstromschutzschalter
US4656446A (en) * 1985-12-17 1987-04-07 Westinghouse Electric Corp. Current limiting circuit breaker with series double break contact system per pole
EP0218497A1 (de) * 1985-09-20 1987-04-15 Telemecanique Schutzschalter mit federnder Lasche

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7632486U1 (de) * 1976-10-18 1977-01-27 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer Leitungsschutzschalter für Überstrom- und Kurzschlußstromauslösung
DE3007243A1 (de) * 1980-02-27 1981-09-03 Brown, Boveri & Cie Ag, 6800 Mannheim Fehlerstromschutzschalter
EP0218497A1 (de) * 1985-09-20 1987-04-15 Telemecanique Schutzschalter mit federnder Lasche
US4656446A (en) * 1985-12-17 1987-04-07 Westinghouse Electric Corp. Current limiting circuit breaker with series double break contact system per pole

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2047445A2 (es) * 1992-04-13 1994-02-16 Securel Sa Disyuntor automatico.
EP0570647A1 (de) * 1992-05-13 1993-11-24 Hager Electro S.A. Schaltschloss für Schutzschalter und Schutzschalter, mit diesem integriert
EP1643530A1 (de) * 2004-10-01 2006-04-05 Hager Electro S.A. Regulierbarer Antrieb für eine Stromleitung-Schutz-Vorrichtung
CN103715029A (zh) * 2012-10-05 2014-04-09 施耐德电器工业公司 电保护设备的操作装置及包括该操作装置的电保护设备
EP2717284A1 (de) * 2012-10-05 2014-04-09 Schneider Electric Industries SAS Bedienungsvorrichtung eines elektrischen Schutzschaltgeräts, und diese umfassendes elektrisches Schutzschaltgerät
FR2996678A1 (fr) * 2012-10-05 2014-04-11 Schneider Electric Ind Sas Dispositif de commande d'un appareil de protection electrique et appareil de protection electrique le comportant
CN103715029B (zh) * 2012-10-05 2018-04-20 施耐德电器工业公司 电保护设备的操作装置及包括该操作装置的电保护设备
CN108288552A (zh) * 2018-02-24 2018-07-17 浙江正泰电器股份有限公司 转换装置及自动转换开关电器
CN108288552B (zh) * 2018-02-24 2023-09-12 浙江正泰电器股份有限公司 转换装置及自动转换开关电器

Also Published As

Publication number Publication date
FR2648615A1 (fr) 1990-12-21
FR2648615B1 (fr) 1991-09-13

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