EP0001293A1 - Hochspannungs-Trennschalter - Google Patents

Hochspannungs-Trennschalter Download PDF

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Publication number
EP0001293A1
EP0001293A1 EP78100990A EP78100990A EP0001293A1 EP 0001293 A1 EP0001293 A1 EP 0001293A1 EP 78100990 A EP78100990 A EP 78100990A EP 78100990 A EP78100990 A EP 78100990A EP 0001293 A1 EP0001293 A1 EP 0001293A1
Authority
EP
European Patent Office
Prior art keywords
contact fingers
switching
switching arm
counter
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP78100990A
Other languages
German (de)
English (en)
French (fr)
Inventor
Horst Ing. Grad. Plettner
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
BBC 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 BBC Brown Boveri AG Germany filed Critical BBC Brown Boveri AG Germany
Publication of EP0001293A1 publication Critical patent/EP0001293A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact

Definitions

  • the invention relates to a high-voltage isolating switch with a first and a second tubular pivoting switching arm, at least two contact fingers being attached to the first switching arm, which in the switched-on position are in engagement with a counterpart on the second switching arm.
  • a contact holder for a high-voltage disconnector which is designed as a cast part that is to be fastened to the pivotably arranged switching arm.
  • This cast part must be machined since bores or cutouts must be provided in which the contact fingers are held and fastened by means of clamping lugs and screw connections.
  • the production and the subsequent processing of the casting are economically relatively complex.
  • the same also applies to the attachment of the counter switching piece to the other switching arm.
  • a cast part is to be provided, to which the counter switching piece is fastened, which cast part must also be machined and therefore economically complex.
  • the invention has for its object to provide a high-voltage disconnector, in which the mounting of the contact fingers or the counterpart is considerably simplified.
  • the first switching arm is shaped so that openings corresponding to the number of contact fingers are formed, into which the contact fingers are inserted and which at least partially enclose the contact fingers, with a constriction between two contact fingers is formed, and that clamping elements are provided, which for clamping the contact fingers on serve the first switching arm.
  • the second switching arm can be deformed at its own free end, similar to the free end of the first switching arm, in such a way that at least two openings are formed, into which moldings on the counterpart can be inserted, which openings are the Formations at least partially include; a constriction is formed between two openings; Furthermore, clamping elements are provided in the same way as in the first switching arm, which are used to clamp the formations of the counter-switching piece on the first switching arm.
  • This configuration can be provided for two, three as well as four contact fingers; If two contact fingers or two formations are provided on the counter contact piece, at the free end of the first and the second switching arm is the area of the free end which lies between the contact fingers or the projections, with the formation of two parallel sections whose spacing from one another is less than the diameter of the contact fingers or the formations, constricted; this area carries the clamping elements, which act on the two parallel sections to clamp the contact fingers or the formations.
  • the advantages achieved by the invention are, in particular, that the tubular switching arms themselves are designed as contact holders, the contacts, that is to say the contact fingers and the counter-switching piece, being clamped directly in the tubular switching arm.
  • FIG. 1 schematically shows a high-voltage disconnector designed as a two-column rotary isolator, which has a support frame 1 on which two rotary insulators 2 and 3 are rotatably arranged perpendicularly thereto and at each free end of which a support part 9 'is fastened, to which each a switching arm 4.5 is attached.
  • the attachment of the switching arm 5 with the associated contact fingers will be described below.
  • the two rotary isolators 2 and 3 are connected to a drive linkage 6, also indicated only schematically, so that they can be actuated by a drive, not shown.
  • the ends of an electrical line are connected to the two-column rotary isolator on both sides via connecting lugs 7.
  • the first switching arm 5 shown in FIGS. 2 and 3 is tubular and welded to the carrier part 9 at one end, while the other, free end is formed by deformation as a contact holder for two contact fingers 10 and 11 running parallel to one another.
  • the free end has in the A constriction 16 is formed in the middle, as a result of which two openings 21 and 22 and between them two parallel sections 20, the spacing of which from one another is smaller than the diameter of the openings 21 and 22 or the contact fingers 10, 11, into which the contact fingers 10 and 11 are inserted (see Fig. 4).
  • the contact fingers are wrapped around the end 8 of the switching arm 5 and one can clamp them in the end by means of clamping elements 12 (here fastening screws) arranged in the constriction 16, so that the contact fingers 10 and 11 are electrically conductively connected to the end of the switching arm .
  • a holder 13 is fastened in the constriction 16 and carries a locking hook 14 bent at right angles at its free end.
  • the right-angled bend takes place in a plane that runs parallel to the plane in which the two contact fingers 10 and 11 lie.
  • a counter switching piece 15 is attached, which is in the switched-on state between the contact fingers 10 and 11. These are slightly bent outwards at their free ends in order to ensure that the counter-switching element 15 runs in securely between the contact fingers 10, 11 during the closing process of the rotary isolator.
  • the counter-switching piece 15 has an extension 23, behind which engages in the switched-on state the locking hook 14 and thus prevents the two-column rotary isolator from being torn open in the event of a short circuit due to electrodynamic forces.
  • the mating contact piece 15 is one of two Contact fingers 10, 11 existing contact finger arrangement (as shown in the drawing) are designed as a contact block arranged perpendicular to the switching arm 4, on the clamping side of which two formations 24, 25 are formed, which in recesses 26, 27, the recesses 21 and 22 on the switching arm 5 correspond, and are manufactured in the same way, can be inserted and braced in the same way.
  • the mating contact piece can, of course, also be T-shaped or, in the case of an arrangement consisting of four contact fingers, be shaped like a cross, the contact fingers being in the switched-on position at the right angles formed with the bars of the counter-switching piece. At their free ends, the contact fingers are provided with spherical bodies 16 as protection against glow discharges.
  • the arrangement or the configuration of the mating contact piece 15 is only indicated. During manufacture, the counter contact piece 15 must be adapted to the distance and the shape or the number of contact fingers.
  • FIG. 6 shows how the switching arm 5 must be designed when four contact fingers 28, 29, 30, 31 have to be used. Then the switching arm has a total of four constrictions 32, 33, 34 and 35, which form four regions, two of which lie opposite one another and are parallel to one another; the distance between the opposing regions is then smaller than the distance between the outer surface lines of the contact fingers 28 to 31 lying on opposite sides.
  • Tensioning screws 36 and 37 are provided for tensioning, which are only shown schematically. Of course, the clamping screws are offset from each other in the axial direction so that they not hinder each other. It can also be seen here that the individual contact fingers 28 to 31 are partially encircled or embraced by the switching arm, a sufficient contact pressure being achieved in this way.
  • a holder is preferably inserted in the area of the constriction 32; this locking hook then engages in a shape corresponding to the configuration 23 on the counter-switching piece, which in the embodiment according to FIG. 6 has a cross shape.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Tumbler Switches (AREA)
EP78100990A 1977-09-28 1978-09-26 Hochspannungs-Trennschalter Withdrawn EP0001293A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19772743554 DE2743554A1 (de) 1977-09-28 1977-09-28 Hochspannungs-trennschalter
DE2743554 1977-09-28

Publications (1)

Publication Number Publication Date
EP0001293A1 true EP0001293A1 (de) 1979-04-04

Family

ID=6020080

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100990A Withdrawn EP0001293A1 (de) 1977-09-28 1978-09-26 Hochspannungs-Trennschalter

Country Status (3)

Country Link
EP (1) EP0001293A1 (en18)
AT (1) AT373717B (en18)
DE (1) DE2743554A1 (en18)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6671530B2 (en) 1990-08-22 2003-12-30 Nellcor Puritan Bennett Incorporated Positioning method for pulse oximetry fetal sensor
WO2017186430A1 (de) * 2016-04-27 2017-11-02 Siemens Aktiengesellschaft Elektrische kontaktanordnung eines trennschalters

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE309646C (en18) *
DE803868C (de) * 1948-10-19 1951-04-12 Iakronprinzia Akt Ges Fuer Met Leicht loesbare Verbindung von zwei oder mehr parallel nebeneinanderliegenden Rohren oder Staeben
DE1191182B (de) * 1962-08-23 1965-04-15 Vogt Bueromoebel Rohrverbindung fuer gleichachsig liegende und sich im stumpfen Stoss beruehrende Rohre, insbesondere fuer Rohre mit rechteckigem Querschnitt
DE2145070B2 (de) * 1971-09-06 1973-07-05 Elektrische kontaktanordnung fuer hochspannungstrennschalter
DE2151009B2 (de) * 1971-10-08 1975-12-04 Siemens Ag, 1000 Berlin Und 8000 Muenchen Trennschalter, insbesondere Zweisäulen-Drehtrennschalter
DE2401344B2 (de) * 1974-01-09 1976-02-19 Siemens AG, 1000 Berlin und 8000 München Elektrische kontaktanordnung fuer hochspannungsschalter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544571A1 (de) * 1975-10-04 1977-04-07 Bbc Brown Boveri & Cie Antriebsvorrichtung fuer manuellen antrieb von bewegbaren kontaktarmen eines trennschalters

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE309646C (en18) *
DE803868C (de) * 1948-10-19 1951-04-12 Iakronprinzia Akt Ges Fuer Met Leicht loesbare Verbindung von zwei oder mehr parallel nebeneinanderliegenden Rohren oder Staeben
DE1191182B (de) * 1962-08-23 1965-04-15 Vogt Bueromoebel Rohrverbindung fuer gleichachsig liegende und sich im stumpfen Stoss beruehrende Rohre, insbesondere fuer Rohre mit rechteckigem Querschnitt
DE2145070B2 (de) * 1971-09-06 1973-07-05 Elektrische kontaktanordnung fuer hochspannungstrennschalter
DE2151009B2 (de) * 1971-10-08 1975-12-04 Siemens Ag, 1000 Berlin Und 8000 Muenchen Trennschalter, insbesondere Zweisäulen-Drehtrennschalter
DE2401344B2 (de) * 1974-01-09 1976-02-19 Siemens AG, 1000 Berlin und 8000 München Elektrische kontaktanordnung fuer hochspannungsschalter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6671530B2 (en) 1990-08-22 2003-12-30 Nellcor Puritan Bennett Incorporated Positioning method for pulse oximetry fetal sensor
WO2017186430A1 (de) * 2016-04-27 2017-11-02 Siemens Aktiengesellschaft Elektrische kontaktanordnung eines trennschalters

Also Published As

Publication number Publication date
AT373717B (de) 1984-02-10
DE2743554A1 (de) 1979-03-29
DE2743554C2 (en18) 1982-07-29
ATA699778A (de) 1983-06-15

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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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17P Request for examination filed
STAA Information on the status of an ep patent application or granted ep patent

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18W Application withdrawn
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Inventor name: PLETTNER, HORST,ING. GRAD.