EP0259800B1 - Disjoncteur de protection de ligne bipolaire - Google Patents

Disjoncteur de protection de ligne bipolaire Download PDF

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Publication number
EP0259800B1
EP0259800B1 EP87112970A EP87112970A EP0259800B1 EP 0259800 B1 EP0259800 B1 EP 0259800B1 EP 87112970 A EP87112970 A EP 87112970A EP 87112970 A EP87112970 A EP 87112970A EP 0259800 B1 EP0259800 B1 EP 0259800B1
Authority
EP
European Patent Office
Prior art keywords
bridge element
circuit breaker
pole circuit
pole
breaker according
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
EP87112970A
Other languages
German (de)
English (en)
Other versions
EP0259800A3 (en
EP0259800A2 (fr
Inventor
Volker Schmitt
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.)
ASEA BROWN BOVERI AKTIENGESELLSCHAFT
Original Assignee
Asea Brown Boveri 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 Asea Brown Boveri AG Germany filed Critical Asea Brown Boveri AG Germany
Priority to AT87112970T priority Critical patent/ATE72361T1/de
Publication of EP0259800A2 publication Critical patent/EP0259800A2/fr
Publication of EP0259800A3 publication Critical patent/EP0259800A3/de
Application granted granted Critical
Publication of EP0259800B1 publication Critical patent/EP0259800B1/fr
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
    • 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
    • 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
    • H01H71/10—Operating or release mechanisms
    • H01H71/1045—Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures

Definitions

  • the invention relates to a two-pole circuit breaker according to the preamble of claim 1.
  • Two-pole circuit breakers serve different purposes, such as. B. to secure single-phase cables with simultaneous separation of the neutral. Another possible application is to increase the breaking capacity by coupling the two contact interruption points, ie by double interruption. Space-saving two-pole circuit breakers are also frequently used for reasons of space, although two electrically separated conductor networks are switched simultaneously by mechanical actuation.
  • a two-pole circuit breaker in shell design has become known from DE-OS 2 234 423, which describes an installation self-switch with a short-circuit and / or an overcurrent release, with a switching mechanism and two contact interruptions.
  • the switching mechanism is arranged in the center of this switch and is held on the housing shells by corresponding lugs, while the contact interruption points are arranged laterally in arc chambers located on both sides of the switching mechanism.
  • This design makes it possible to use the switching mechanism that is customary for single-pole self-switches in a shell construction with a simple interruption and to transmit the triggering movement from the trigger via a truss-like bridge element to the movable contact pieces.
  • the housing is formed by two individual housing parts, which have a cup shape and are directed towards each other with their open side.
  • a circuit breaker with an auxiliary contact has become known, in which the trigger is housed in a space of the housing together with switch parts and a contact point, whereas the space running parallel to it has an auxiliary contact point, in which one on the auxiliary contact Traverse is formed, which protrudes into the space of the switching device with the trigger, so that when the main contact lever is actuated by the trigger, the auxiliary contact lever is actuated by the main contact lever.
  • the object of the invention is therefore to provide a two-pole circuit breaker of the type mentioned, which is simple in construction and economical to manufacture and in which the two switch poles are actuated with only one magnetic release, with the best possible use of space within the switch housing.
  • a bridge element which is rotated by the magnetic release located in one half of the housing, the bridge element ensuring a synchronous action on the switch contacts and the switching mechanisms.
  • the guide part with the two parallel guide surfaces prevents the bridge element from tilting when actuated by the armature of the magnetic release.
  • the width of the guide surfaces can be set so that it corresponds at least to the length of the travel of the impact anchor.
  • the height of the guide surfaces i.e. H. the distance between the cross member and the axis of rotation is approximately two times the width of the guide surfaces, while the thickness of the guide part, i. H. the distance of the guide surfaces from each other, corresponds approximately to half their width. It has been found that an optimal guidance of the bridge element is achieved with such a configuration.
  • the two-pole circuit breaker is constructed so that the switching planes with the switching poles are each housed in their own pole housing, the pole housings lying next to each other and touching with two partitions, then it is expedient to arrange the gap-shaped recess between the partitions, whereby according to the characteristic Features of claim 3 one of the partitions can have a bulge which delimits the gap-shaped recess on one side, the other side of the gap-shaped recess being formed by the partition of the other pole housing.
  • shaft pins can be formed perpendicularly to the guide surfaces, which engage in correspondingly adapted recesses in the side walls of the gap-shaped recess, the central axes of the shaft pins being aligned with the axis of rotation of the bridge element. This defines a clear axis of rotation for the bridge element, so that tilting of the bridge element is avoided with certainty.
  • the cross member is partially covered by a bridge element, the bridge element covering the distance between the switching devices, so that the cross member only emerges from the bridge element at the ends actuating the switching devices.
  • the bridge element is preferably manufactured together with the guide surfaces and the integrally formed shaft journals as well as with the cross member as a one-piece molding made of insulating material.
  • Plastic possibly also fiber-reinforced plastic, is considered as the insulating material, which is processed by injection molding. But it can also be provided that the bridge element made of other insulating materials, for. B. ceramic molding compounds, possibly with a supporting insert made of wire or the like.
  • Another possibility is to form the bridge element by means of massive forming, e.g. B. in the hot pressing process, from appropriate feed.
  • FIG. 1 shows the side view of a switch pole 12 with contact carrier 11 and magnetic release 16 of a two-pole circuit breaker 10, the closed switch pole 12 having contact pieces 18, 19.
  • Reference number 20 denotes a boundary wall of the housing half, which receives the switch pole 12.
  • the electrical connections for the fixed contact piece 19 and for the movable contact piece 18 adjoining the contact carrier 11 belonging to a switching mechanism 14 are not shown.
  • a bridge part 24 can be seen above the switch pole, which is arranged between the contact carrier 11 and the magnetic release 16.
  • the magnetic trigger 16 has an impact armature 22 which bears against the bridge part 24.
  • a surface designated by reference number 26 represents the side view of a cross member 26.
  • FIG. 2 shows the top view of the arrangement shown in FIG. 1.
  • parts of the switching mechanism 14 can be seen, which covers the switch pole 12 underneath and is separated from the neighboring switching mechanism 15 by the partition wall 20 and a second partition wall 21.
  • Each of the partitions 20, 21 delimits a housing half, each with a switch pole 12, 13.
  • the plane between the partitions 20, 21 is a parting plane by which the bridge element 24 used is divided into two sections of equal length.
  • the switching mechanism 15 covers the switching pole 13 underneath in the same way as the switching mechanism 14.
  • the bridge element 24 with a cross member 26 is arranged transversely to the switching planes, which are parallel to the housing partition walls 20, 21.
  • the magnetic release 16 is arranged, the impact armature 22 of which rests on the cross member 26 of the bridge element 24 and, in the event of a release, acts on the bridge element on one side.
  • guide surfaces 28 are formed on the bridge element 24, which are inserted and guided in a precisely fitting recess 30 which is formed between the partition walls 20, 21.
  • An elongated hole is inserted in the contact carrier 11 as a guide 25 for the guide pin 23.
  • the magnetic trigger 16 with its impact anchor 22 is constructed in a known manner, i.e. provided with a bobbin, a coil and a magnetic core, and shown only schematically.
  • a recess 30 is provided between the dividing walls 20, 21 for receiving the guide part 27 of the bridge element 24 provided with guide surfaces 28. Because for reasons of stability the guide part 27 of the bridge element 24 has a certain thickness which is greater than the wall thickness of the Partitions 20, 21, the partition 21 is provided with a bulge 32 which delimits the recess 30 from three sides. The fourth side is delimited by the partition 20.
  • the dimensions of the recess 30 are precisely matched to those of the guide part 27 of the bridge element 24, so that the bridge element 24 can be inserted into the recess 30 with minimal play and the guide surfaces 28 lie tightly against one another.
  • the guide part 27 provided with guide surfaces 28 is formed asymmetrically, ie on one half, onto the bridge element 24. This means that the correct installation position is clearly defined.
  • FIG. 3 shows the same arrangement as in FIG. 1, but with the contact open. Accordingly, the corresponding parts are identified by the same reference numerals.
  • the inclined position of the contact carrier 11 of the switching mechanism 14, in which the movable contact piece 18 is lifted off the fixed contact piece 19, is clearly recognizable.
  • the guide 25 in the contact carrier 11 is dimensioned such that, in the switched-off position, the guide pin 23 rests on the side of the guide 25 facing the contact point. When switched on, the contact carrier 11 pivots in the direction of the fixed contact piece until it hits it.
  • the guide pin is only about half the length of the guide 25. The remaining switch-on path in the guide 25 is used in order to obtain the overstroke in the switching mechanism 14 which is provided for applying the required contact force.
  • the guide pin 23 slides in the guide 25 of the contact carrier 11 during its pivoting movement, which takes place when it is acted upon by the crossmember 26 of the bridge element 24, which in turn is acted upon by the impact anchor 22 which has come out of the magnetic trigger 16.
  • the crossmember 26 also carries out a pivoting movement together with the bridge element 24 and takes an opposite action when it is acted upon by the striking anchor 22 which has been triggered. H. to the left, inclined position.
  • the magnetic release 16 is located in the switching plane, which is separated from the switch pole 12 visible in side view by the partition 20.
  • FIG. 4 shows a corresponding top view of the arrangement in FIG. 3, as was shown in FIG. 2 for the arrangement from FIG. 1.
  • the same parts are provided with the same reference numbers.
  • the bridge element 24 has assumed a different position as a result of the action by the impact armature 22 of the magnetic release 16. While the formation 27 with the guide surfaces 28 can be seen on the left side of the bridge element 24 in FIG. 2, the guide part 27 can now be seen on the right side of the bridge element 24. This has its cause, as already explained in relation to FIG. 3, in the fact that the bridge element has swiveled to the left and thereby reveals the view of the guide part 27 which can now be seen on the right-hand side when viewed from above.
  • FIG. 5 shows a perspective view of a bridge element 24 which is formed from a cylindrical body, on which trusses 26 with a trapezoidal cross section are formed on both end faces.
  • short shaft journals 33 are formed on the guide surfaces 28, the central axis of which is aligned with the axis of rotation or pivoting of the bridge element 24.
  • FIG. 6 shows the partial bottom view of the guide part 27 of the bridge element 24 inserted into the recess 30 provided for this purpose in the area of the partition walls 20, 21.
  • the shaft journals 33 integrally formed on the guide surfaces 28 of the guide part 27 engage clearly in recesses 31 provided for this purpose.
  • the recesses 31 are embedded both in the partition wall 20 and in the bulge 32 of the partition wall 21 and in this way ensure the sufficient mobility of the bridge element 24 while maintaining the position required for the function.

Landscapes

  • Breakers (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Claims (9)

  1. Disjoncteur de puissance bipolaire comportant un corps (20, 21) en plusieurs parties, un déclencheur magnétique (16), deux pôles de commutateur (12, 13) dont les plans de commutation sont disposés côte à côte et auxquels sont associés chaque fois un support de contact (11), qui sont actionnés conjointement par l'armature battante (22) du déclencheur magnétique (16) par l'intermédiaire d'un élément de liaison (24), l'élément de liaison (24) étant muni d'une traverse (26) qui s'étend perpendiculairement dans les deux plans de commutation et qui agit directement sur les deux supports de contact (11) et coopère mécaniquement avec les deux mécanismes de commutation (14, 15), et qui pivote, lors de son actionnement par l'armature battante (22), autour d'un axe de rotation situé à une certaine distance parallèlement à la traverse (26), caractérisé en ce que le déclencheur magnétique (16) est disposé dans une moitié du boîtier, dans le plan de commutation d'un pôle de commutateur (13) et agit avec son armature battante (22) de manière excentrée sur la traverse (26), en ce que l'élément de liaison (24) est un corps cylindrique sur lequel est formée la traverse (26) parallèlement à l'axe, et en ce qu'une partie de guidage (27) avec des surfaces de guidages (28) est formée sur l'élément de liaison (24), de manière asymétrique par rapport à la longueur de l'élément de liaison (24) et perpendiculairement à celui-ci.
  2. Disjoncteur de puissance bipolaire selon la revendication 1, caractérisé en ce que les plans de commutation avec les pôles de commutateur (12, 13) sont disposés chacun dans un boîtier de pôle, lesquels boîtiers de pôle sont placés côte à côte et se touchent par l'intermédiaire de deux cloisons (20, 21), un évidement (30) en forme de fente étant aménagé entre les cloisons (20, 21).
  3. Disjoncteur de puissance bipolaire selon la revendication 2, caractérisé en ce que l'une des cloisons (21) présente une partie bombée (32) qui délimite d'un côté l'évidement (30) en forme de fente, l'autre paroi latérale de l'évidement (30) en forme de fente étant formée par l'autre cloison (20).
  4. Disjoncteur de puissance bipolaire selon l'une des revendications 1 à 3, caractérisé en ce que l'axe de rotation de l'élément de liaison (24), en position montée, est situé au-dessous de la traverse (26).
  5. Disjoncteur de puissance bipolaire selon au moins l'une des revendication 1 à 4, caractérisé en ce que les surfaces de guidage (28) de l'élément de liaison (24) sont munies des deux côtés de tourillons (33), et en ce que les axes des tourillons s'engagent dans des cavités (31) adaptées dans les parois latérales de l'évidement (30) en forme de fente.
  6. Disjoncteur de puissance bipolaire selon la revendication 1, caractérisé en ce que la traverse (26) est localement englobée dans l'élément de liaison (24) et ne dépasse de l'élément de liaison (24) qu'aux extrémités actionnant les mécanismes de commutation (14, 15).
  7. Disjoncteur de puissance bipolaire selon l'une des revendications précédentes, caractérisé en ce que l'élément de liaison (24) est réalisé sous forme de pièce moulée monobloc, de préférence en matériau isolant renforcé par fibres.
  8. Disjoncteur de puissance bipolaire selon la revendication 7, caractérisé en ce que l'élément de liaison (24) est fabriqué par unprocédé de moulage par injection.
  9. Disjoncteur de puissance bipolaire selon la revendication 7, caractérisé en ce que l'élément de liaison (24) est fabriqué par formage à partir d'un bloc et/ou par usinage par enlèvement de copeaux.
EP87112970A 1986-09-09 1987-09-04 Disjoncteur de protection de ligne bipolaire Expired - Lifetime EP0259800B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87112970T ATE72361T1 (de) 1986-09-09 1987-09-04 Zweipoliger leitungsschutzschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3630643 1986-09-09
DE19863630643 DE3630643A1 (de) 1986-09-09 1986-09-09 Zweipoliger leitungsschutzschalter

Publications (3)

Publication Number Publication Date
EP0259800A2 EP0259800A2 (fr) 1988-03-16
EP0259800A3 EP0259800A3 (en) 1988-09-28
EP0259800B1 true EP0259800B1 (fr) 1992-01-29

Family

ID=6309205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87112970A Expired - Lifetime EP0259800B1 (fr) 1986-09-09 1987-09-04 Disjoncteur de protection de ligne bipolaire

Country Status (3)

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EP (1) EP0259800B1 (fr)
AT (1) ATE72361T1 (fr)
DE (2) DE3630643A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6930403B2 (en) 2002-08-21 2005-08-16 High Tide Associates, Inc. Mobile electrical power source

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3193646A (en) * 1962-05-02 1965-07-06 Wadsworth Electric Mfg Co Interlock for multi-pole circuit breakers
DE1286188B (de) * 1965-09-09 1969-01-02 Licentia Gmbh Installationsselbstschalter mit Hilfskontakt
DE2048256A1 (de) * 1970-10-01 1972-04-06 Bbc Brown Boveri & Cie Selbstschalter mit Nulleiterabschaltung
DE2234423A1 (de) * 1972-07-13 1974-01-24 Bbc Brown Boveri & Cie Installationsselbstschalter in schalenbauweise
FR2563375B1 (fr) * 1984-04-24 1988-05-20 Legrand Sa Disjoncteur a fonction differentielle

Also Published As

Publication number Publication date
DE3776468D1 (de) 1992-03-12
EP0259800A3 (en) 1988-09-28
DE3630643A1 (de) 1988-03-17
ATE72361T1 (de) 1992-02-15
EP0259800A2 (fr) 1988-03-16

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