EP0948006B1 - Dispositif pour l' indication de la position et l' usure des contacts d'un interrupteur électrique - Google Patents

Dispositif pour l' indication de la position et l' usure des contacts d'un interrupteur électrique Download PDF

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Publication number
EP0948006B1
EP0948006B1 EP19990106098 EP99106098A EP0948006B1 EP 0948006 B1 EP0948006 B1 EP 0948006B1 EP 19990106098 EP19990106098 EP 19990106098 EP 99106098 A EP99106098 A EP 99106098A EP 0948006 B1 EP0948006 B1 EP 0948006B1
Authority
EP
European Patent Office
Prior art keywords
contact
display
switching
display element
vacuum interrupter
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
EP19990106098
Other languages
German (de)
English (en)
Other versions
EP0948006A2 (fr
EP0948006A3 (fr
Inventor
Klaus Lankuttis
Konrad Binka
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.)
Eaton Industries GmbH
Original Assignee
Moeller GmbH
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 Moeller GmbH filed Critical Moeller GmbH
Publication of EP0948006A2 publication Critical patent/EP0948006A2/fr
Publication of EP0948006A3 publication Critical patent/EP0948006A3/fr
Application granted granted Critical
Publication of EP0948006B1 publication Critical patent/EP0948006B1/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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
    • 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
    • H01H9/02—Bases, casings, or covers
    • H01H2009/0292—Transparent window or opening, e.g. for allowing visual inspection of contact position or contact condition
    • 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
    • H01H33/666—Operating arrangements

Definitions

  • the invention relates to an arrangement for switching position and Abbrandan Attache at least one fixed and at least one movable Contact of an electrical switching device.
  • burnup is the loss of contact material when switching under load caused by the arc at the contacts referred to.
  • it is therefore particularly also important in contactors equipped with vacuum interrupters, not only the switching position of the contacts on or off on the Contactor, but also ongoing knowledge of the progress of the Burn off the contacts to get the contacts or vacuum interrupter in time to be able to change.
  • the burnup by means of a sensor in the switched-on condition of a contactor and display. This display is independent of a switch position display same contactor.
  • the switch position indicator separately from a burn-up indicator.
  • From EP 0 292 849 A2 is an electrical switching device with a fixed and a movable contact piece and an arrangement for switching position display known.
  • the movable display element that controls the switching movement of moving contact and from the respective position of the movable Display element to a window edge is readable, gives the information the switch position on or off again.
  • From DE 31 19 256 A1 are electrical switching devices with visual displays of the respective switching position through openings with transparent material or magnifying glass known.
  • the invention is based on the object, a simple visible from the outside Control indicator for the burn-off of the contacts with vacuum interrupters create, which is also coupled with a switch position indicator.
  • the display according to the invention of the switching position and the burn-up is self-explanatory regarding on and off.
  • the invention enables a display for switching position and contact erosion.
  • the arrangement according to the invention is simple in design and reduces the necessary components for presentation and indication of the switching position and burnup.
  • the inventive Arrangement for displaying the burn-up and the switching position the advantage that even with three phases of a vacuum switching device, i. three Vacuum tubes, also an asymmetric contact erosion of the various Vacuum tubes are immediately displayed and automatically recognizable. Because the Display elements without transmission elements work according to the invention is it also possible, with direct access to the display elements immediately make a direct measurement, with which burn-off dimensions can be determined.
  • each of the contact pairs of a vacuum interrupter are directly visible via an opening in the lid of the vacuum contactor.
  • the opening by means of a transparent material or covered by a magnifying magnifying glass.
  • the fixed Ad element at its pointing to the moving display element Head side has lateral recesses whose depth the permissible burnup of moving and fixed contact. That way is a symbolic contact representation for the display elements selected with the the actual contact height, i. the possible Abbrandterrorism, matches.
  • the display elements with respect to their assignment to each other a safety margin provide, for example, such that the display elements are formed so that they overlap each other in each switching state and by appropriate recesses the desired displays are made visible.
  • An essential advantage of the inventive arrangement for displaying the Switching state and the burn-up condition is that the display is a certificate of authenticity is and corresponds directly to the switching conditions.
  • the display elements are very robust.
  • An advantageous embodiment of the display elements provides that they are in are formed essentially from an angularly bent wall piece, wherein in each case an angled band end of the attachment of the display element serves and the other end of the tape display, and the display elements so on attached and arranged the vacuum interrupter or the movable part are that the tape ends serving the display against each other on each other directed parallel spaced plane.
  • the stationary display element near the exit end of the movable contact bearing Contact carrier mounted from the vacuum interrupter on the vacuum interrupter is and the movable display element at one of the movable Contact bearing contact carrier with a switching movement acting on Lifting rod is attached.
  • the presetting and adjustment of the display elements can be factory-set, i. already during assembly of the switching device with closed switch contacts, be performed.
  • Figs. 2a, 2b the combined Heidelberg eins- and Abbrandan Attache shown in their basic structure and operation.
  • Fig. 2a is the switch position off with open contacts 401, 411 a Vacuum interrupter shown.
  • the fixed contact 401 is on a contact carrier 40 fixed in place in the vacuum contactor.
  • the movable contact 411 is attached to a contact carrier 41, which together by means of a lifting rod 5 with the contact 411 when switched on, see Fig. 2b, in the direction of arrow P to the Contact with the fixed contact 401 is moved.
  • Each switching contact 401, 411 is equipped with a permissible amount of contact material for the burnup, wherein the respective permissible erosion (depth) is designated by a1 or a2.
  • the contact opening a0 has 2 mm.
  • the fixed contact 401 and the movable contact 411 are in the stationary in the contactor mounted vacuum interrupter as a housing accommodated. Near the exit end of the movable contact 411 supporting Part of the vacuum interrupter 2 is stationary on the vacuum interrupter 2, the first display element 7 is attached.
  • the second display element 8 On the moving part, which is connected to the movable contact 411 and its movement causes, here the lifting rod 5, the contact 411 in the direction of arrow P on the fixed contact 401 moves, the second display element 8 is firmly applied.
  • the display element 8 makes the Switching movement directly in the direction of arrow P, see Fig. 2b.
  • the display element 7 remains in this case in its fixed position.
  • the switching position is displayed, see Fig. 2a, the switching position Off and Fig. 2b, the switching position on.
  • the end 8a of the display element always on to migrate the display element 7 or overlap this, so that thereby directly proportional to the progressive burnup and burnup state is readable.
  • Fig. 3 is a schematic view of a vacuum contactor 1 in the plan view of the lid 3, with three windows 31, 32, 33 corresponding to three vacuum interrupters equipped with switching contacts.
  • the display elements 7 and 8 are visible in the windows 31, 32, 33.
  • Fig. 4 are schematically the different positions of the display elements 7, 8 to each other according to the positions of the fixed contact and represented the moving contact. Since there is a certificate of authenticity is the distance of the display elements 7,8 in the off position A according to the Contact position a0.
  • On the stationary display element 7 are at the movable Display element 8 facing end side lateral recesses 401a, 401b, see Fig. 5, formed, wherein the depth of these recesses the maximum burnup a1 + a2 of the switching contacts, see Fig. 2a, corresponds.
  • the lateral recess show in their total depth the still possible burnup a1 + a2, i.e. to make visible.
  • Fig. 5 the formation of the window 31 of a vacuum contactor is after Fig. 3 shown here with an oval enclosure, wherein the window with a transparent material is covered. Below the window are the Ends of the display elements 7, 8, the fixed contact 401 and movable Contact 411 correspond and make their switching paths visible, arranged
  • the burn-up indicator will at switch position On visible.
  • Fig. 6a is for a vacuum contactor according to FIG. 3 with three vacuum interrupters and three display windows 31, 32, 33 show the switching state Off, where no statement on the burn-up situation is recognizable.
  • Fig. 6b is the Switch position On and according to the specification and the size the still visible distance a between the two display elements to see through the recesses that no burn is present and the Switch position One is present.
  • Fig. 6c in turn, the switching position A recognizable and by reducing the distance a of the two display elements 7, 8 indicates a medium erosion of the contacts. At the same time is too see that all three vacuum interrupters have the same burnup, So evenly loaded.
  • Fig. 6a is for a vacuum contactor according to FIG. 3 with three vacuum interrupters and three display windows 31, 32, 33 show the switching state Off, where no statement on the burn-up situation is recognizable.
  • Fig. 6b is the Switch position On and according to the specification and the size the still visible distance a between the two display elements to see through the recesses that no
  • the switching position A can be seen and further, that a further significantly increased burnup of the Contacts has taken place by appropriate approximation of the display elements 7, 8 together.
  • the switching position A can be seen and at the same time by complete approximation of the display elements 7,8 together the complete burning of the contacts is displayed. While in the previous representations in each case a symmetrical burning of the Contacts has been shown is shown in Fig. 6f, as well as an asymmetric Contact erosion when switching on One immediately recognizable and visible is done. In this case, a complete erosion is displayed in the left window 31, while the other two windows 32, 33 a considerable and also show different erosion of the contacts.
  • Fig. 1 is a partial cross section through a vacuum contactor by a vacuum interrupter 2 with the inventive equipment of display elements 7,8.
  • the vacuum interrupter 2 is above the contact carrier 40th the fixed contact 401 on the terminal lug 15 by means of screw 16 mounted in the housing of the vacuum contactor.
  • the moving contact 411 is attached to the movable contact carrier 41, which at its rear End protrudes from the vacuum interrupter 2 and by means of the lifting rod. 5 from the off-switching position in the on-switching position in the direction P and vice versa is movable. With the lifting rod 5, the strand 13, which is the connection rail 14 leads, connected.
  • the lifting rod for moving the movable Contact 411 is connected at one end to the contact carrier 41 and at the other end with two nuts 55, 56, with which they are in the socket 57th is stored. Furthermore, the lifting rod or the contact carrier 41 via the lifting rod 5 is acted upon by the contact pressure spring 6.
  • the armature 10 is attached to the rocker 12 via the anchor receptacle 11. At a switch-on is the lifting rod with its nuts 55, 56 including this attached strand 13 and the nuts 54, the strand on the lifting rod fix, and the contact carrier 41 and the contact 411 moves.
  • the stationary Display element 7 is now mounted on the stationary vacuum interrupter 2. Preferably, the display element 7 is close to the exit end of the movable Contact carrier 41 from the vacuum interrupter 2 fixed.
  • the display element 7 is formed at an angle, so that the display leg is parallel to the axis of movement of the switching contact 411 extends.
  • the movable display element 8 is connected to the lifting rod 5, here in the area of the stranded wire 5. Also the movable display element 8 is formed at an angle, so that the display angle in turn parallel to the axis of motion of the moving contact 411 extends, making the switching movement directly in real size is transmitted.
  • the two display legs of the display elements 7, 8 are located also parallel to the extension of the lid 3, the vacuum contactor covers the top and in the assigned to the display elements 7, 8 windows or breakthroughs 32 are formed, which with a transparent Material 32a are covered. In this way, the display elements 7.8 visible from the outside, so that the display of the switching state and the burn-up state, as explained above, is visible at all times.
  • FIG. 7 the arrangement and attachment of the display elements 7,8 at excerpts of a vacuum contactor according to FIG. 1 shown in detail as a detail.
  • the vacuum interrupter with its different housing parts is housed stationary in the vacuum contactor. At one end she is with connected to the stationary contact carrier 40 of the fixed contact. At the the other end of the vacuum interrupter 2, the switching movement in the arrow direction P by means of the lifting rod 5 on the movable contact carrier 41 with the transmit movable contact 411. With the lifting rod is firmly the strand 13th connected by means of nuts 54. Between the nuts 54 and the strand 13 the display element 8 is also attached to the lifting rod 5.
  • the display element 8 When moving the lifting rod 5 in the direction of arrow P, the display element 8 accordingly moved while the display element 7 firmly on the vacuum interrupter 2 is fixed and thus is arranged stationarily in the vacuum contactor 3.
  • the contact pressure spring 6 is in a spring plate 9 subsequent to the attachment the strand 13 is arranged by means of the nut 54 on the lifting rod 5.
  • the Lock nut 54a is used together with the internally threaded Spring plate 9 for adjusting the contact pressure spring 6 and thus the contact force.
  • the switching indication and combustion indication by means of the display elements 7,8 or their mutually parallel guided display areas 7a, 8a takes place as previously explained in FIGS. 2 to 6.
  • Fig. 8 is a perspective view of the lid 3 of the vacuum contactor shown in FIG. 1.
  • the oval windows 31, 32, 33 are for the display of the switching position of the burn by means of the display element 7, 8th.
  • the combined Weg eins- and Abbrandan Adjuste invention is robust, very simple and always shows the viewer the state of the Contactor with respect to its switching contacts on.

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Measuring Fluid Pressure (AREA)
  • Contacts (AREA)

Claims (7)

  1. Agencement pour indiquer la position de commutation et l'usure d'au moins un contact fixe monté dans un tube de commutation sous vide et d'au moins un contact mobile d'un commutateur électrique, deux éléments d'indication (7, 8) associés l'un à l'autre étant prévus pour chaque tube de commutation sous vide, l'un des éléments d'indication (7) étant relié fixement au contact fixe (401) inséré fixement dans le tube de commutation sous vide (2) et l'autre élément d'indication (8) étant relié fixement à un composant (5) qui porte le contact (411) guidé à déplacement dans le tube de commutation sous vide de telle manière que le deuxième élément d'indication (8) accompagne le déplacement de commutation du contact mobile (411), ce qui permet de lire la position de commutation (allumée, éteinte) à partir de la position des éléments d'indication (7, 8) l'un par rapport à l'autre et de telle façon que l(on peut en même temps lire l'état d'usure des contacts (401, 411) dans la position de commutation branchée, caractérisé en ce que les éléments d'indication (7, 8) des contacts de chacun des tubes de commutation sous vide sont directement visibles sur le commutateur sous vide grâce à une ouverture associée (31, 32, 33) dans le couvercle (3) du commutateur sous vide.
  2. Agencement selon la revendication 1, caractérisé en ce que l'ouverture (31, 32, 33) est recouverte d'un matériau transparent ou d'un verre de loupe.
  3. Agencement selon l'une des revendications 1 à 2, caractérisé en ce que sur son côté frontal orienté vers l'élément d'indication mobile (8), l'élément d'indication fixe (7) présente des évidements latéraux (401a, b) dont la profondeur (a1 + a2) correspond à l'usure admissible du contact mobile et du contact fixe (411, 401).
  4. Agencement selon l'une des revendications 1 à 3, caractérisé en ce que les éléments indicateurs (7, 8) sont essentiellement formés d'une pièce de feuillard coudée, une extrémité du feuillard coudé servant à fixer l'élément d'indication respectif et l'autre extrémité du feuillard servant à l'indication, et en ce que les éléments d'indication sont agencés et fixés sur la partie fixe, par exemple le tube de commutation sous vide, et sur la partie mobile de telle manière que les extrémités du feuillard (7a, 8a) qui servent à l'indication sont orientées l'une vers l'autre sur des plans parallèles situés à distance l'un de l'autre.
  5. Agencement selon la revendication 4, caractérisé en ce que les extrémités (7a, 8a) du feuillard qui servent à l'indication sont configurées de manière à se chevaucher l'une l'autre dans chaque position de commutation.
  6. Agencement selon l'une des revendications 1 à 5, caractérisé en ce que l'élément d'indication fixe (7) est monté sur le tube de commutation sous vide à proximité de l'extrémité par laquelle le support de contact (41) qui porte le contact mobile (411) sort du tube de commutation sous vide (2) et en ce que l'élément d'indication mobile (8) est fixé sur une tige de relèvement (5) qui, par un déplacement de commutation, sollicite le support de contact (41) qui porte le contact mobile (411).
  7. Agencement selon l'une des revendications 1 à 6, caractérisé en ce que l'ajustement des éléments d'indication (7, 8) peut être effectué lors du montage du commutateur, les contacts (401, 411) étant fermés.
EP19990106098 1998-03-31 1999-03-26 Dispositif pour l' indication de la position et l' usure des contacts d'un interrupteur électrique Expired - Lifetime EP0948006B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19814397 1998-03-31
DE1998114397 DE19814397C1 (de) 1998-03-31 1998-03-31 Anordnung zur Schaltstellungsanzeige und Abbrandanzeige bei einem elektrischen Schaltgerät

Publications (3)

Publication Number Publication Date
EP0948006A2 EP0948006A2 (fr) 1999-10-06
EP0948006A3 EP0948006A3 (fr) 2000-06-14
EP0948006B1 true EP0948006B1 (fr) 2005-07-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990106098 Expired - Lifetime EP0948006B1 (fr) 1998-03-31 1999-03-26 Dispositif pour l' indication de la position et l' usure des contacts d'un interrupteur électrique

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Country Link
EP (1) EP0948006B1 (fr)
DE (1) DE19814397C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11791120B2 (en) 2021-05-21 2023-10-17 G&W Electric Company Status indicator for switchgear

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19732324A1 (de) 1997-07-28 1999-02-04 Kloeckner Moeller Gmbh Schaltungsanordnung und Verfahren zur Speicherplatzverwaltung und zur Abarbeitung von Anwenderprogrammen in Kleinsteuerungen
KR100325408B1 (ko) * 1999-10-26 2002-03-04 이종수 회로차단기용 접점개폐장치
DE10003918C1 (de) * 2000-01-29 2001-07-05 Reinhausen Maschf Scheubeck Verfahren zur Überwachung des Kontaktabbrandes bei Stufenschaltern
DE10005461C2 (de) * 2000-02-08 2002-01-03 Siemens Ag Herstellungsverfahren für ein elektromagnetisches Schaltgerät, z. B. ein Schütz
DE10352580B3 (de) * 2003-11-11 2005-04-28 Reinhausen Maschf Scheubeck Verfahren zur Überwachung des Kontaktabbrandes bei Stufenschaltern
EP2337047B1 (fr) * 2009-12-18 2014-07-02 Alstom Grid GmbH Commutateur de puissance électrique ainsi qu'affichage de position correspondant

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
DE1764678U (de) * 1955-08-29 1958-04-10 Siemens Ag Anordnung zur ueberwachung des schaltstueckabbrandes.
US2981817A (en) * 1958-08-20 1961-04-25 Basic Products Corp Switch
US4302650A (en) * 1980-05-30 1981-11-24 Westinghouse Electric Corp. Circuit interrupter with optical indicator
DD205027A1 (de) * 1982-05-03 1983-12-14 Inst Regelungstechnik Berlin Abbrandanzeige an vakuumschaltkammern
DE3717431A1 (de) * 1987-05-23 1988-12-08 Asea Brown Boveri Elektrisches schaltgeraet
US5095293A (en) * 1990-11-30 1992-03-10 Westinghouse Electric Corp. Circuit breaker contact wipe indicator
JP3127691B2 (ja) * 1993-12-14 2001-01-29 富士電機株式会社 真空バルブ接点消耗量測定装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11791120B2 (en) 2021-05-21 2023-10-17 G&W Electric Company Status indicator for switchgear
US12211661B2 (en) 2021-05-21 2025-01-28 G & W Electric Company Status indicator for switchgear

Also Published As

Publication number Publication date
EP0948006A2 (fr) 1999-10-06
EP0948006A3 (fr) 2000-06-14
DE19814397C1 (de) 1999-12-23

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