EP0111662B1 - Elektrischer Schalter - Google Patents

Elektrischer Schalter Download PDF

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Publication number
EP0111662B1
EP0111662B1 EP83110150A EP83110150A EP0111662B1 EP 0111662 B1 EP0111662 B1 EP 0111662B1 EP 83110150 A EP83110150 A EP 83110150A EP 83110150 A EP83110150 A EP 83110150A EP 0111662 B1 EP0111662 B1 EP 0111662B1
Authority
EP
European Patent Office
Prior art keywords
contact
contact point
point
lever
latch
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
EP83110150A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0111662A1 (de
Inventor
Walter Velten
Erwin Muders
Rolf Goehle
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.)
BBC Brown Boveri AG Germany
Original Assignee
Brown Boveri und Cie AG Germany
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 Brown Boveri und Cie AG Germany filed Critical Brown Boveri und Cie AG Germany
Priority to AT83110150T priority Critical patent/ATE20405T1/de
Publication of EP0111662A1 publication Critical patent/EP0111662A1/de
Application granted granted Critical
Publication of EP0111662B1 publication Critical patent/EP0111662B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • 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
    • H01H2071/004—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor with a tripping or current sensing device in the neutral wire, e.g. for third harmonics in a three fase system
    • 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
    • H01H71/1009—Interconnected mechanisms
    • H01H71/1027—Interconnected mechanisms comprising a bidirectional connecting member actuated by the opening movement of one pole to trip a neighbour pole
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/128—Manual release or trip mechanisms, e.g. for test purposes

Definitions

  • the invention relates to an electrical switch according to the preamble of claims 1 and 2 respectively.
  • a switch which has two contact points in a housing has become known from DE-C-10 33 314.
  • the housing has a base, a housing attachment and a cover;
  • the main contact point which is designed as a double contact point, is accommodated in the housing attachment, and the magnetic release is also located.
  • An auxiliary contact is housed in the base of the housing and is controlled by the contact carrier of the main contact.
  • the auxiliary contact or auxiliary contact point is also a double contact point.
  • the housing is not designed in a shell construction, and arc-quenching plate assemblies, which are present in the circuit breakers currently manufactured to limit the current, are not provided. Rather, the arc is extinguished by extending it to a sufficient extent, which requires a corresponding size of the housing.
  • An electrical circuit breaker in the housing of which two switch contacts are likewise accommodated, is known from DE-C-10 98 587.
  • the two switch contacts are located in parallel next to each other in a housing divided by partitions and are connected to each other by means of a connecting axis controlled by a switch lock.
  • the switch contacts are electrically in series, which is why the main focus of this arrangement is to draw the arc as long as possible, which is caused by the fact that the arc chambers are divided into two subchambers by means of an intermediate wall, the arc being formed in one chamber and by blowing into the other chamber, which is connected to the environment via an outlet.
  • DE-C 10 98 587 shows several different housing shapes; all housing shapes do not show a shell construction.
  • a circuit breaker in shell design in which two contact points are accommodated, one of which switches off or disconnects a phase conductor and the other the neutral or neutral conductor, has become known from FR-A-24 98 335 (EP-A-0 054 499).
  • the isolating contact point for the phase conductor is formed by a fixed contact piece and a movable contact piece attached to a contact lever, whereas the neutral conductor switch is formed by a double contact point which is switched on or off by means of the switching knob for actuating the switching contacts when switched on again via a connecting lever.
  • the chambers in which the contact pieces are located are separated from one another by an intermediate wall; the phase conductor contact point is above and the neutral conductor contact points are below the partition in the housing.
  • the arrangement according to EP-A-0 054 499 is such that the contact point accommodated in the lower housing part or housing area is not suitable for switching off a phase conductor or for switching off with the occurrence of an arc.
  • the object of the invention is to provide an electrical switch of the type mentioned at the beginning with two contact points, which is of simple construction, in which case either an arc extinguishing plate packet can be assigned either to one contact point or to both contact points.
  • the hinged anchor acts on the contact lever via the latch lever by means of the catch hook arranged on the latch lever and in the other via a catch hook formed directly on the hinged anchor.
  • an arc-quenching plate stack can be assigned to the first and the second contact point, and a short-circuit release can be assigned to both the one and the other contact point.
  • the other contact point is also opened.
  • connection rod at least to the contact lever of the first contact point in the vicinity of the contact piece on the contact lever.
  • a further advantageous embodiment can have the effect that the second contact point is assigned a second hinged anchor system, the hinged anchor of which acts on the connecting rod during a triggering process in the direction of opening the two contact points.
  • an elongated hole is formed on the movable contact lever of the first contact point, in which an end of a coupling rod connected to the switching knob is guided, a spring being provided which connects the coupling rod presses against the end of the elongated hole facing the shift knob.
  • the other end of the coupling rod is articulated on the shift knob.
  • This spring is the contact force spring for the first contact point and it also serves to position the gear mechanism of the switching lock for the contact lever of the first contact point in two stable positions Dead center position can be transferred into each other to keep.
  • the switch of the type mentioned is characterized in that the connecting rod protrudes beyond the contact lever of the first contact point and protrudes from the switch housing in the area of the switching knob, so that the second contact point can be switched off directly by actuating the extension of the connecting rod .
  • a projection is formed on the extension, which cooperates with a projection on the latch lever in such a way that the latch lever is rotated in the direction of opening the first contact point.
  • Another embodiment of the invention can be that a cam is formed on the extension, which acts on the hinged anchor to twist it in the sense of unlatching the latching point.
  • a further embodiment of the invention is that the extension is provided with a U-shaped extension which, in the switched-on position, engages around a shoulder on the housing, the extension being in the switched-on position by means of a compression spring, i.e. in the position in which the extension engages around the housing heel, is fixed.
  • a compression spring i.e. in the position in which the extension engages around the housing heel.
  • the neutral conductor or the second contact point remains closed because the extension is fixed when the phase conductor contact point is triggered;
  • the latch lever is released via the cam and the contact lever of the phase conductor or first contact point is opened.
  • the second embodiment which can be achieved from the first embodiment by only a minor modification, it is possible to switch a phase conductor with the first contact point and the neutral conductor with the second contact point.
  • the assignment of the individual components to one another is selected in such a way that the first contact point carries the phase conductor current and the second contact point is switched into the neutral conductor.
  • the circuit is then such that when the two contact points are opened, the zero conductor contact and then the phase conductor contact are basically opened and, in the opposite case, the switching on, the zero conductor switch contact and then the phase conductor contact is closed. This is then achieved by a suitable arrangement of stops and points of engagement of the connecting or switching rod.
  • Figure 1 shows a schematic representation of a first embodiment of the invention.
  • the switch has a housing 10 which is designed in a shell construction and has two housing shells (not shown further).
  • the housing has a recess 12 in its lower area, which enables the switching device to be snapped onto a U-shaped support rail in an installation distribution.
  • the housing 10 is divided into two spaces 18 and 18 by an intermediate wall 14 formed in the housing shell, the upper space 18 having a phase conductor contact point (first contact point) 20 and the lower space 18 having a neutral conductor contact point (second contact point) 22.
  • the two contact points each consist of a movable contact piece 24 and 28 and a fixed contact piece 28 and 30.
  • a first hinged armature system 32 with a yoke 33, a coil 34 and a magnetic core 35 is provided in the upper space 18.
  • the magnetic core works together with a hinged armature 36, one end of which is supported at point 37 on the yoke 33 and the other end of which is bent at right angles and has a leg 38, the free end of which is provided with a catch hook 39 with which it is behind the Contact lever 40, which carries the movable contact piece 24, engages and actuates it in the event of a switch-off in the event of a short-circuit current.
  • a stationary axle 41 is provided, on which a ratchet lever 42 is rotatably mounted.
  • the pawl lever 42 has a nose 43 against which the opposite or opposite end of the movable contact piece 24 is pressed, so that this causes a latch.
  • the pressing force is effected by a coupling rod 48 articulated eccentrically on a switching toggle 45 which is rotatably mounted in an axis 44; when the switch toggle 45 is brought into the switched-on position, the coupling rod 46 presses the contact lift 40 against the nose 43 and against the fixed contact piece 28 and locks it.
  • eccentric articulation of the coupling rod 46 at point 47 and articulation point 48 of the coupling rod on the contact lever forms a first stable position, which, when the switching knob is turned counterclockwise via a dead center position into a second stable position jumps, which then represents the off position.
  • a spring is provided which (similar to the spring 109 according to FIG. 3) acts on the coupling rod 48 in the direction of the shift knob. This spring essentially serves to hold the gear system, which is composed of the contact lever 40, the coupling rod 46 and the shift knob 45, in a first stable position, which corresponds to the switch-on position.
  • This spring is significantly stronger than the spring 50 because it has the force of the spring 50, the contact force at the upper and lower contact points 20, 22 and the latching force. There is the possibility of dropping the spring 50, since (see further below) the spring provided can apply the opening force alone and could serve for the opening alone.
  • the hinged armature 36 On the latch lever 42 there is an extension 49 which protrudes into the path of movement of the folding anchor 36. If, for example, the hinged armature 36 is tightened due to a short circuit and pivots about the point 37 in the direction of arrow A, the hinged armature takes the ratchet lever with it via the extension 49 and pivots it about the axis 41 counterclockwise in the direction of arrow B. Latching on the nose 43 released so that the movable contact lever 40 is pivoted under the spring 50 about the axis articulation point 48, which itself is guided in an elongated hole in a manner not shown in FIG. 1. In this way, the contact point 20 is opened. At the same time, the movable contact lever is torn open via the hinged anchor and the catch hook 39.
  • a connecting rod 53 is articulated on a pivot axis 51, which extends through the intermediate wall 14 and is articulated on the movable contact lever 52, to which the movable contact piece 26 is attached, at the articulation point 57.
  • a further magnet system 54 corresponding to the hinged armature system 32 is provided, which in the same way as the hinged armature system 32 has a magnetic core 55 and a hinged armature 56.
  • the hinged anchor 55 interacts with the connecting rod 53 via a stop 58, so that when the magnet system 54 responds, the hinged anchor 56 actuates the connecting rod 53 via the stop 58 and opens the movable contact lever 40 together with the movable contact lever 52.
  • the two contact points 20 and 22 are each assigned an arc quenching plate packet 61 and 62, so that the arc is optimally extinguished in both rooms.
  • the current flows in the upper region from an input terminal 63 via a connecting line 64 to the bimetal 60; from there via the yoke 33 into the coil 34 and via a further connecting strand 84 to the movable contact piece 40; in the switched-on state, the current flows from there via the contact point 20 to the output terminal 65.
  • the fixed contact piece 28 is U-shaped and has two legs 66 and 67, the leg 66 being connected to the output terminal 65, whereas the leg 67 is an arc running rail forms.
  • the potential of the input terminal 63 is connected to a guide plate 69 via a connecting line 68.
  • the arc-quenching plate packet is arranged between the guide plate 69 and the leg 67 of the fixed contact piece.
  • the second contact point 22 is formed in a similar manner in the lower region, the arc-quenching plate packet 82 being arranged between an arc-guiding rail 70 and the fixed contact piece 30.
  • An input input terminal 71 and an output terminal 72 are also provided in the lower region; the current flows from the input terminal 71 via a connecting line 73 to the winding of the magnet system 54 and via a further connecting line 74 to the movable contact lever 52 and from there to the contact point 22.
  • the current flows via a connecting line 75 to the arc guide rail 70 Arc quenching sheet package 82.
  • the switch according to FIG. 2 shows an embodiment in which the neutral conductor, the switch contact of which is located in the lower space 18, can be switched off manually.
  • a magnet system 54 is missing.
  • the connecting rod 80 which corresponds to the connecting rod 53 in FIG. 1, has an extension 81 which extends beyond the hinged anchor 36 and whose end 82 projects outwards and there forms a U-shape 83 which receives a housing extension 84 in the position shown in FIG. 2.
  • the connecting rod 80 is then acted upon in the region of its extension 81 by a spring 85 in the direction of arrow C.
  • the movable contact lever 52 is acted upon by a spring 76, which practically generates the contact pressure by rotating the movable contact lever 52 clockwise around the pivot point 57.
  • the spring 50 is absolutely necessary.
  • the manual switch-off of the lower contact point which is switched on in the NT, causes the switch-off of the contact point 20 via the coupling via the cams 80a, as just mentioned.
  • Switching on the lower contact lever via the end 82 only causes the NT to be switched on at the contact point 22.
  • the contact point 20 must then be switched on separately; it can also take place only after the lower contact point 22 has been switched on.
  • the yoke 33 is essentially of an approximately Z-shaped shape, with the area 100 of the yoke being parallel runs to the central axis of the magnetic core 35, an leg 101, angled in an L-shape, connects, in which an adjusting screw 102 is screwed.
  • an adjusting screw 102 is screwed.
  • the vertical region 100 extends into a holding bracket 103, the other, free leg of which is used to hold the thermobimetal 60.
  • the tip of the adjusting screw 102 presses on the inner surface of this leg with the thermobimetal 60, as a result of which the tripping can be set in the event of an upper current.
  • this is similar for the arrangement according to FIG. 1; however, the bracket is shown differently there.
  • a folding anchor 104 is mounted, which cooperates with a ratchet lever 105.
  • This pawl lever 105 corresponds to the pawl lever 42, although the hinged armature 104 does not act directly on the movable contact lever 40 according to the embodiment in FIG. 3. Rather, the hinged anchor 104 acts directly on an extension 108 on the ratchet lever 105, which is rotatably mounted at point 41 in the same way as the ratchet lever 42.
  • a catch hook 107 is also formed on the latch lever 105 and protrudes into the movement path of the movable contact lever 40.
  • a rotation of the hinged armature 104 also causes the movable contact lever 40 to rotate in the same direction via the extension 106 and the catch hook 107.
  • a latching point 108 is provided, to which the contact lever 40 is pressed by means of the articulated gear mechanism, which is formed from the shift knob 45, the coupling rod 46 and the articulation point 48.
  • a leaf spring 109 is guided on the movable contact lever, against which the articulation point 48 presses from above, so that the holder or the connection between the coupling rod 46 and the contact lever 40 is a resilient connection.
  • the leaf spring 109 is significantly stronger than the spring 50, since it must exert both the force of the spring 50, the contact force above and below, and the latching force.
  • a stop 120 is provided on the housing 10 in the lower region, ie below the intermediate wall 14, so that the movement of the movable contact lever 52 is limited at least at the end opposite the contact piece.
  • FIG. 4 shows a switching device similar to FIG. 3 or FIG. 2; the main difference compared to FIG. 3 is that the magnet system 54 is omitted.
  • the configuration according to FIG. 5 is also constructed or varied compared to FIG. 2.
  • the connecting rod 80 is provided with an extension 81 which ends in a region end 82 which forms a U-shaped recess 83 which is delimited by a leg 83 'or 83 ".
  • the coupling between the connecting rod and the contact lever 40 takes place via a projection 130 on the extension 81 and a projection 131 on the latch lever.
  • This nose connects to the extension 106 (see FIG. 3).
  • the contact point 22 is opened manually, the spring 76 moves the contact lever 52 and thus the connecting rod 80/81 upward, the projection 130 opening the latching point 108 via the nose 131.
  • the contact point 20 is also opened, specifically by the interaction of the leaf spring 109 with the arrangement of the gear 45/46/80/40.
  • the contact point 22 is first closed independently of the contact point 20 and only then can the contact point 20 be closed via the switching knob 45.
  • the switch-off process is such that when the short-circuit current occurs, the hinged armature 36 picks up and opens the movable contact lever 40 via the pawl lever 105. If the fixation of the U-shaped recess 83 on the shoulder attachment 84 of the housing 10, the contact point 22 remains closed; it could then only be opened manually.
  • the connecting rod is shown in two views 53rd It can be seen that the connecting rod made of plastic has two slots or two recesses 154 and 156, which are arranged at a distance from one another, such that the recess 154 lies above the intermediate wall and the recess 156 lies below the intermediate wall.
  • the movable shift levers 40 and 52 are inserted into the cutouts 154 and 156.
  • the recess 154 is adapted to the movement of the contact lever 40 and has two tips 160 and 162, which are not directly opposite one another, but have a distance between them in the recess 154.
  • the upper tip then lies directly in the area of the left side wall and the lower tip 162 immediately in the area of the right side wall; an inclined surface 161 adjoins the upper tip 160; an inclined surface 163 adjoins the lower tip; both inclined surfaces are parallel to each other and the upper one opens to the right and the lower one to the left side wall.
  • the lower recess has semicircular opposing limits 164 and 166; the lower contact lever 52 then has a bend 158 which is adapted to the limit 164 and which allows the contact lever 52 to be pivoted optimally.
  • the connecting rod is made of plastic.
  • the latch lever 42 or 105 is made of plastic.
  • the extension 107 is at a distance from the contact lever 40. When it is triggered, the latching point is therefore first released and after the lead has been overcome due to the distance, the extension 107 acts on the contact lever.
  • the hinged armature is constantly under the action of a tension spring 150, which acts continuously on the hinged armature in the switch-off direction and thereby also determines the magnetic response value.
  • a spiral spring 152 is provided which continuously acts on the ratchet lever in a clockwise direction, i.e. the nose 108 constantly presses against the contact lever 40 and thus ensures the latching.

Landscapes

  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
EP83110150A 1982-11-13 1983-10-12 Elektrischer Schalter Expired EP0111662B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83110150T ATE20405T1 (de) 1982-11-13 1983-10-12 Elektrischer schalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3242062 1982-11-13
DE19823242062 DE3242062A1 (de) 1982-11-13 1982-11-13 Elektrischer schalter

Publications (2)

Publication Number Publication Date
EP0111662A1 EP0111662A1 (de) 1984-06-27
EP0111662B1 true EP0111662B1 (de) 1986-06-11

Family

ID=6178076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110150A Expired EP0111662B1 (de) 1982-11-13 1983-10-12 Elektrischer Schalter

Country Status (4)

Country Link
EP (1) EP0111662B1 (enrdf_load_stackoverflow)
AT (1) ATE20405T1 (enrdf_load_stackoverflow)
DE (1) DE3242062A1 (enrdf_load_stackoverflow)
ES (1) ES8406135A1 (enrdf_load_stackoverflow)

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DE3410157A1 (de) * 1984-03-20 1985-09-26 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer schalter mit je einer schaltkontaktstelle fuer einen phasenleiter und fuer einen nulleiter
DE3413808A1 (de) * 1984-04-12 1985-10-17 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer schalter
DE3824027A1 (de) * 1988-07-15 1990-01-18 Asea Brown Boveri Elektrisches schaltgeraet
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DE4329100A1 (de) * 1992-10-08 1994-04-14 Abb Patent Gmbh Elektrischer Schalter
GB2295275B (en) * 1994-11-15 1998-08-12 Matsushita Electric Works Ltd Circuit breaker
DE19503530B4 (de) * 1995-02-03 2006-07-06 Aeg Niederspannungstechnik Gmbh & Co Kg Leitungsschutzschalter
IT1283162B1 (it) * 1996-07-15 1998-04-07 Gewiss Spa Interruttore elettrico automatico modulare e componibile,con ottimizzazione degli spazi utilizzati
DE19725000A1 (de) * 1997-06-13 1998-12-17 Abb Patent Gmbh Installationsschaltgerät
JP3804345B2 (ja) * 1999-07-13 2006-08-02 松下電工株式会社 回路遮断器
DE19933166A1 (de) * 1999-07-14 2001-01-18 Hager Electro Gmbh Vorrichtung zum Aktivieren und Inaktivieren von als Block angeordneten Schaltgeräten
DE10102708B4 (de) * 2001-01-22 2004-08-26 Aeg Niederspannungstechnik Gmbh & Co Kg Leitungsschutzschalter
EP1473750A1 (de) 2003-04-30 2004-11-03 Siemens Aktiengesellschaft elektromechanisches Schaltgerät
FR2866152B1 (fr) * 2004-02-10 2006-03-17 Schneider Electric Ind Sas Disjoncteur multipolaire a blocs de coupure unipolaire
DE102004018275B4 (de) * 2004-04-15 2007-10-18 Siemens Ag Schaltgerät
DE102006036191A1 (de) * 2006-08-01 2008-02-07 Siemens Ag Schaltvorrichtung
CN114078671A (zh) * 2021-12-21 2022-02-22 湖北腾明智能电气有限公司 一种隔离式单极双断点断路器
CN119008341A (zh) * 2024-08-22 2024-11-22 桂林电子科技大学 一种组合断路器

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FR2496335A1 (fr) * 1980-12-16 1982-06-18 Legrand Sa Disjoncteur a sectionnement de neutre

Also Published As

Publication number Publication date
DE3242062A1 (de) 1984-05-17
ES526951A0 (es) 1984-07-01
DE3242062C2 (enrdf_load_stackoverflow) 1991-01-03
ES8406135A1 (es) 1984-07-01
EP0111662A1 (de) 1984-06-27
ATE20405T1 (de) 1986-06-15

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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