EP0948006A2 - 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
EP0948006A2
EP0948006A2 EP99106098A EP99106098A EP0948006A2 EP 0948006 A2 EP0948006 A2 EP 0948006A2 EP 99106098 A EP99106098 A EP 99106098A EP 99106098 A EP99106098 A EP 99106098A EP 0948006 A2 EP0948006 A2 EP 0948006A2
Authority
EP
European Patent Office
Prior art keywords
display
contact
display element
switching
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.)
Granted
Application number
EP99106098A
Other languages
German (de)
English (en)
Other versions
EP0948006B1 (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 erosion at least one fixed and at least one movable Contact of an electrical switching device.
  • Burning is the loss of contact material that occurs when switching under load caused by the arc on the contacts.
  • the lifespan and functionality of switchgear is therefore particularly important also important for contactors equipped with vacuum interrupters, not only the switch position of the contacts on or off on the Schütz read, but also ongoing knowledge of the progress of the To get burned off of the contacts to the contacts or vacuum interrupter in time to be able to replace.
  • the Burning detection it is disadvantageous that by arranging the sensor inside control of the housing is difficult and only when the cover is open of the contactor to be checked is enabled.
  • the switch position indicator separate from a burn indicator.
  • EP 0 292 849 A2 describes an electrical switching device with a fixed and a movable contact piece and an arrangement for switching position indication known.
  • the movable display element that the switching movement of the participates in movable contact and from which the respective position of the movable Display element is readable to a window edge, 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 glasses.
  • the invention has for its object a simple visible from the outside Control display for the erosion of the contacts in vacuum interrupters create, which is also coupled with a switch position indicator.
  • This object is achieved according to the invention in a generic arrangement solved in that two mutually associated display elements are provided are, of which the one display element is stationary with respect to the fixed Contact is connected and the other display element fixed with respect of the movable contact is connected such that the second display element joins in and out of the switching movement of the movable contact the respective position of the display elements to each other, the switching position (On - Off) can be read and in the switch position On the burn-up the contacts can be read.
  • the invention finds a particularly advantageous application in vacuum switching devices with fixed in a vacuum interrupter and moving contacts.
  • the invention proposes that for each vacuum interrupter two associated display elements are provided, of which the one display element is stationary with the stationary in the vacuum contactor arranged vacuum interrupter with that in the vacuum interrupter fixed contact is connected, and that other display element with a movable in the vacuum interrupter guided contact bearing component is connected, such that the second display element participates in the switching movement of the movable contact and each other from the respective position of the display elements Switch position (on - off) can be read and in the switch position on at the same time the erosion of the contacts can be read.
  • the vacuum tube is assigned and connected and the other display is coordinated with the movable contact of the vacuum interrupter, so that it takes part in the switching movement of the movable contact.
  • the position of both display elements in each case provides information about the switching position of the switching device at all times, namely the On position and off position.
  • the arrangement is in the on position a measure of the erosion of the two display elements to each other of the contacts, for example in the vacuum interrupter.
  • the display of the switch position and the erosion according to the invention is self-explanatory regarding on and off.
  • the invention enables a display for switch position and contact erosion.
  • the arrangement according to the invention is simple to implement and reduces the necessary components for the display and display of the switch position and the burn.
  • Furthermore enables the arrangement according to the invention by means of display elements immediate real display without transmission elements, so that also The possibility of error is reduced accordingly.
  • the invention Arrangement for displaying the burnup and the switching position the advantage that even with three phases of a vacuum switching device, i.e. three Vacuum tubes, also an asymmetrical contact erosion of the different Vacuum tubes are immediately displayed and automatically recognized. Since the Display elements work without transmission elements according to the invention it is also possible with direct access to the display elements immediately carry out a direct measurement, with which burn-up measurements can be determined.
  • the display elements of each of the contact pairs of a vacuum interrupter are Visible through an opening in the lid of the vacuum contactor.
  • the opening is by means of a transparent material or of a magnifying magnifying glass.
  • the fixed Display element pointing at the movable display element Head side has lateral recesses, the depth of the allowable burn of moving and firm contact. That way a symbolic contact representation for the display elements selected with the actual contact height, i.e. the possible degree of erosion.
  • a safety reserve provide, for example, such that the display elements are designed so that they overlap each other in every switching state and through appropriate recesses the desired advertisements are made visible.
  • a major advantage of the arrangement according to the invention for displaying the Switching state and the burned state is that the display is an authenticity display is and corresponds directly to the switching conditions.
  • the display elements are very robust.
  • An advantageous embodiment of the display elements provides that they in are essentially formed from an angularly bent wall piece, wherein in each case an angled end of the tape for fastening the display element serves and the other end of the band of the display, and so the display elements the vacuum interrupter or the movable part attached and arranged are that the tape ends used for display against each other on each other parallel plane spaced from each other.
  • the fixed display element near the exit end of the one carrying the movable contact Contact carrier from the vacuum interrupter attached to the vacuum interrupter and the movable display element on one of the movable Contact carrying contact carrier with a switching movement Lift rod is attached.
  • the presetting and adjustment of the display elements can be done in the factory, i.e. already when installing the switchgear with closed switch contacts, be performed.
  • the erosion i.e. the state of the switching contacts
  • the erosion during the use of the device constantly by visual inspection can be detected without opening the vacuum switching device got to.
  • an asymmetrical contact erosion of the three vacuum interrupters of a switching device is directly visible.
  • 2a, 2b the combined switching position and Burning display shown in its basic structure and mode of operation.
  • 2a is the switch position Off when contacts 401, 411 are open Vacuum interrupter shown.
  • the fixed contact 401 is on a contact carrier 40 fixed in the vacuum contactor.
  • the movable contact is 411 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 Contact with the fixed contact 401 is moved.
  • Each switch contact 401, 411 is equipped with a quantity of contact material that is permissible for the erosion, where the permissible erosion (depth) is designated a1 or a2.
  • the contact opening a0 has 2 mm.
  • Fixed contact 401 and movable contact 411 are shown in FIG the stationary vacuum switch tube as housing housed. Near the exit end of the one carrying the movable contact 411 Part of the vacuum interrupter 2 is stationary on the vacuum interrupter 2 attached the first display element 7. On the moving part, which is connected to the movable contact 411 and its movement causes here the lifting rod 5, which the contact 411 in the direction of arrow P on moved fixed contact 401, the second display element 8 is firmly applied.
  • the display element 8 When moving in the direction of arrow P, the display element 8 makes the Switching movement directly in the direction of arrow P, see Fig. 2b.
  • the display element 7 remains in its fixed position.
  • the switch position is displayed first, see Fig. 2a the switch position From and Fig. 2b, the switch position on.
  • the end 8a of the display element continued to burn up the display element 7 migrate or overlap, so that this the progressive burn-up and the burn-up state are directly proportional is readable.
  • FIG. 3 schematically shows a vacuum contactor 1 in the top view of the cover 3, the one with three windows 31, 32, 33 corresponding to three vacuum interrupters is equipped with switch contacts.
  • the display elements 7 and 8 are visible in windows 31, 32, 33.
  • the various positions of the display elements are shown schematically 7, 8 to each other according to the positions of the fixed contact and of the moving contact. Since there is a certificate of authenticity the distance of the display elements 7,8 in the off position A corresponding to the Contact position a0.
  • On the stationary display element 7 are on the movable Display element 8 facing end face lateral recesses 401a, 401b, see FIG. 5, the depth of these recesses corresponds to the maximum erosion a1 + a2 of the switch contacts, see Fig. 2a. If there are still new contacts, the side recess is in the ON switch position E1 show in their entire depth the possible burn-up a1 + a2, i.e. to make visible.
  • FIG. 5 is the formation of the window 31 of a vacuum contactor Fig. 3 shown here with an oval frame, 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.
  • Fig. 4 is a life display with the invention Arrangement of display elements possible in the form of a combined switch position and burn-up indicator.
  • the burn indicator will visible with the switch position On.
  • 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, whereby no statement about the burning situation is recognizable.
  • 6b is the Switch position shown and according to the specification and size the still visible distance a between the two display elements to see through the recesses that there is no burnup and the Switch position on is present.
  • 6c is the switching position A recognizable and by reducing the distance a between the two display elements 7, 8 a medium burn of the contacts is displayed. At the same time it is too see that all three vacuum interrupters have the same burn, are evenly loaded. 6d, the switch position A can be seen and further that another significantly increased burnup of the Contacts has taken place by appropriately approximating the display elements 7, 8 to each other.
  • FIG. 1 is a partial cross section through a vacuum contactor through a vacuum interrupter 2 with the equipment of display elements according to the invention 7.8 shown.
  • the vacuum interrupter 2 is over the contact carrier 40 of the fixed contact 401 on the terminal lug 15 by means of a screw connection 16 fixed in the housing of the vacuum contactor.
  • the moving contact 411 is attached to the movable contact carrier 41, which is on its rear Protrudes from the vacuum interrupter 2 and by means of the lifting rod 5 from the off switch position to the on switch position in direction P and vice versa is movable. With the lifting rod 5 is the strand 13, which leads to the connecting 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 57 is stored. Furthermore, the lifting rod or the contact carrier 41 is over the lifting rod 5 is acted upon by the contact pressure spring 6.
  • the anchor 10 is attached to the rocker 12 via the anchor receptacle 11. With a switch-on movement the lifting rod with its nuts 55, 56 including the attached attached strand 13 and nuts 54, which the strand on the lifting rod fix, as well as the contact carrier 41 and the contact 411 moves.
  • the stationary Display element 7 is now attached to the stationary vacuum interrupter 2.
  • the display element 7 is preferably close to the outlet end of the movable one Contact carrier 41 fixed from the vacuum interrupter 2.
  • the display element 7 is angled 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 strand 5. Also the movable display element 8 is angular, so that the display angle again parallel to the axis of movement of the movable contact 411 stretches, which makes 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 cover 3, the vacuum contactor covers the top and in the window assigned to the display elements 7, 8 or openings 32 are formed 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 status and the burn-up status, as explained above, is always visible.
  • FIG. 7 the arrangement and attachment of the display elements 7,8 a vacuum contactor according to FIG. 1 partially shown enlarged as a detail.
  • the vacuum interrupter with its different housing parts is stationary in the vacuum contactor. At one end she is with connected to the fixed contact carrier 40 of the fixed contact. At the the other end of the vacuum interrupter 2, the switching movement in the direction of the arrow P by means of the lifting rod 5 on the movable contact carrier 41 with the movable contact 411 transmitted.
  • the strand 13 is fixed with the lifting rod connected by means of the nuts 54. Between the nuts 54 and the strand 13 the display element 8 is also attached to the lifting rod 5.
  • FIG. 8 is a perspective view of the lid 3 of the vacuum contactor shown in FIG. 1.
  • the oval windows 31, 32, 33 serve for the display of the switching position of the erosion by means of the display element 7, 8th.
  • the combined switching position and erosion indicator according to the invention is robust, very simple and always shows the viewer the state of the Contactors in relation to its switching contacts.

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Measuring Fluid Pressure (AREA)
  • Contacts (AREA)
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 true EP0948006A2 (fr) 1999-10-06
EP0948006A3 EP0948006A3 (fr) 2000-06-14
EP0948006B1 EP0948006B1 (fr) 2005-07-20

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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10003918C1 (de) * 2000-01-29 2001-07-05 Reinhausen Maschf Scheubeck Verfahren zur Überwachung des Kontaktabbrandes bei Stufenschaltern
WO2001059795A1 (fr) * 2000-02-08 2001-08-16 Siemens Aktiengesellschaft Procede de fabrication pour un appareil de coupure electromagnetique, par ex. un contacteur electromagnetique
WO2005052616A1 (fr) * 2003-11-11 2005-06-09 Maschinenfabrik Reinhausen Gmbh Procede de surveillance de l'usure des contacts de commutateurs a gradins
DE10052412B4 (de) * 1999-10-26 2006-09-07 Lg Industrial Systems Co., Ltd. Vakuumleistungsschalter

Families Citing this family (3)

* 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
EP2337047B1 (fr) * 2009-12-18 2014-07-02 Alstom Grid GmbH Commutateur de puissance électrique ainsi qu'affichage de position correspondant
CA3159684C (fr) 2021-05-21 2025-10-07 G & W Electric Company Indicateur d'etat pour un appareillage de commutation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10052412B4 (de) * 1999-10-26 2006-09-07 Lg Industrial Systems Co., Ltd. Vakuumleistungsschalter
DE10003918C1 (de) * 2000-01-29 2001-07-05 Reinhausen Maschf Scheubeck Verfahren zur Überwachung des Kontaktabbrandes bei Stufenschaltern
US6518771B2 (en) 2000-01-29 2003-02-11 Pharmacia & Upjohn Company Method of monitoring the contact burnoff in tap changers
WO2001059795A1 (fr) * 2000-02-08 2001-08-16 Siemens Aktiengesellschaft Procede de fabrication pour un appareil de coupure electromagnetique, par ex. un contacteur electromagnetique
WO2005052616A1 (fr) * 2003-11-11 2005-06-09 Maschinenfabrik Reinhausen Gmbh Procede de surveillance de l'usure des contacts de commutateurs a gradins

Also Published As

Publication number Publication date
EP0948006B1 (fr) 2005-07-20
EP0948006A3 (fr) 2000-06-14
DE19814397C1 (de) 1999-12-23

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