EP1912230A2 - Disjoncteur sectionneur avec entraînement à ressort - Google Patents

Disjoncteur sectionneur avec entraînement à ressort Download PDF

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Publication number
EP1912230A2
EP1912230A2 EP07016806A EP07016806A EP1912230A2 EP 1912230 A2 EP1912230 A2 EP 1912230A2 EP 07016806 A EP07016806 A EP 07016806A EP 07016806 A EP07016806 A EP 07016806A EP 1912230 A2 EP1912230 A2 EP 1912230A2
Authority
EP
European Patent Office
Prior art keywords
switch
spring
disconnector
switching
drive
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Withdrawn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
EP07016806A
Other languages
German (de)
English (en)
Other versions
EP1912230A3 (fr
Inventor
Matthias Schaar
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.)
Uebigauer Elektro- und Schaltanlagen UESA GmbH
Original Assignee
Uebigauer Elektro- und Schaltanlagen UESA 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
Priority claimed from DE102007002918A external-priority patent/DE102007002918A1/de
Application filed by Uebigauer Elektro- und Schaltanlagen UESA GmbH filed Critical Uebigauer Elektro- und Schaltanlagen UESA GmbH
Publication of EP1912230A2 publication Critical patent/EP1912230A2/fr
Publication of EP1912230A3 publication Critical patent/EP1912230A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3031—Means for locking the spring in a charged state
    • 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
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/40—Power arrangements internal to the switch for operating the driving mechanism using spring motor

Definitions

  • the invention relates to a switch-disconnector with spring drive for actuating at least one switching contact, in particular medium-voltage systems in a range up to 24 KV.
  • switch disconnectors are known. They usually have a spring force drive, which acts on a switch shaft which carries at least one switching contact. The switching speed of such switching devices must be high. The circuit must always be carried out independently of the operator always with the same and sufficient speed.
  • switch disconnectors with indirectly acting drives are suitable for this purpose. Therefore, certain indirect drives are known from the prior art, in particular the leap drives, with the aid of which the sudden switching takes place via a charged energy store.
  • the known switch-disconnector with jump drive have the problem that by clamping the energy storage, which is usually designed as a drive spring, a dead center position on the switch shaft is overcome, which requires an increased force entry and consumes more energy in particular during the switching to to overcome this dead center.
  • a leap drive device which has a non-rotatably connected to the drive shaft actuating and clamping disc for a disposed in a plane lying substantially transverse to the drive shaft drive spring and a rotatably mounted on the drive shaft and the drive spring shaft side hinged transmission member. This is connected via a connecting rod with the switch shaft of the switching device.
  • the actuating and clamping disc acts together with the hinge pin connecting the drive spring to the transmission member and has a sector-shaped cut-out to form a limited in their length trajectory of driving flanks for the transmission element and the drive spring.
  • the disadvantage of this drive is that so-called failures can occur during actuation of the drive shaft in the Ausschalttraum and the drive spring can pass well beyond the dead center and behind this in a stable position, but without the contacts are disconnected or closed, as for the Separating the contacts required switching energy, especially at higher short-circuit power with corresponding higher contact forces, or for a long time not sufficiently maintained switches from the drive spring is not available.
  • a switch-disconnector with spring drive for actuating at least one switching contact in particular medium voltage systems in a range up to 24 KV with at least one switch-on and at least one opening spring, a switch shaft to which the spring drive for the switching movement engages and the carries at least one switching contact, which is characterized in that a blocking device is provided for the spring force drive, which holds this before reaching the dead center of the ON-switching spring in a tensioned position.
  • the blocking device thus ensures that the spring force drive now remains in a position that is still before reaching the dead center.
  • the blocking device now the complete spring force is released without the dead center must be overcome, since this was not exceeded. Therefore, there is still sufficient energy available to simultaneously tension another spring, for example, the off-switching spring, which also acts on the switch shaft.
  • switch-disconnector with a memory drive, which enables a remote switching from "on” to “off” as well as “off” to “on”.
  • the switching itself can nevertheless be sudden in both directions and the turn-on speed is also required in this solution, the required at least six meters per second.
  • the advantage of the new switch-disconnector is also indicated by the fact that both a mechanical switching on and off as well as an electromechanical switching on and off is possible.
  • a remote switching from a control center is made possible, which can be realized for example by means of shunt trips.
  • the switch is biased by hand and can also be turned on by turning the hand lever in the other direction. It can also be done electrically switching.
  • Switching off can also take place immediately after switching on, without the jump system having to be tightened again in the meantime.
  • the switch-disconnector is here designed such that a manual connection is possible at any time. It is further contemplated that due to the inventive arrangement of a blocking device for the spring drive, a remote release without problems can be realized.
  • the invention is characterized in that the blocking device is indicated by two pawls acting in opposite directions acting on a driver arranged on the switch shaft.
  • the driver is preferably indicated by a perforated disc. Blocking positions and / or blocking devices are provided on the perforated disk or on the driver, in which the blocking pawls are able to intervene for blocking.
  • One of the pawls acts as a pawl and the second pawl as a pawl.
  • the pawls act opposite and block the switch shaft or sitting on the switch shaft driver even before reaching the dead center of the ON-switching spring on the shaft. At the same time blocks a second, oppositely acting pawl (off-latch) the driver.
  • the ON-switching spring When releasing the one-pawl, mechanical or electrical, the ON-switching spring actuates the driver (switch-on) of the switch-disconnector and simultaneously clamps the OFF-switching spring.
  • the off-switching spring When releasing the pawl, mechanically or electrically, the off-switching spring actuates the driver (switch-off) of the switch-disconnector.
  • the switching system With the tensioning of the closing spring, the switching system is ready for the on and at the same time for the immediately following off switching operation, as may be important, for example, for the shock trigger of a fuse.
  • the tensioning of the one-shift spring and the release of both pawls is actuated by a hand lever, for example, depending on the direction of rotation of the hand lever.
  • the driver is releasably fixedly arranged on the shift shaft.
  • the driver is positioned by this releasably fixed arrangement on the shift shaft so that the necessary switching or locking operations can be exercised exactly.
  • the voltage of the closing spring via the driver designed as a perforated disc, on which at least one drive lever, as already described above, attacks.
  • the pawl is movably mounted on the drive lever.
  • a support and a respective fixed axis for the input and output pawl are provided on the carrier. It is further provided that the load-break switch has a switching position, a disconnected position and / or a grounding position of the at least one switching contact.
  • An aspect of the invention is also indicated by the fact that now a mechanical and / or electrical locking is provided for the load-break switch. It is advantageous if the electrical lock for the switch-disconnector is indicated by two tension magnets which engage via a shift lever on the driver or on the on or off pawl.
  • the invention is characterized according to a variant in that an indication of the switching position of the circuit breaker is provided, which indicates the state of the ON-switching spring and the position of the switch shaft directly and / or indirectly.
  • the one-shift spring preferably engages the driver via a bent lever.
  • the off-switching spring may be provided spaced from the one-shift spring on a housing or on a linkage or a frame is coupled via the shaft and / or via the driver.
  • a drive blocking device for the operation of the drive is provided, which automatically prevents an operation can be made unintentionally.
  • this drive blocking device is for example indicated by a spring-force-controlled bolt, which prevents operation in a raised position and allows operation in a lowered position.
  • connecting means are provided on the switch-disconnector to allow mounting in a rack, a housing or a building, such as a switching station or the like.
  • Fig. 1 shows in a three-dimensional representation of the drive as a section of the entire circuit breaker.
  • the reference numeral 1 schematically indicates the blocking device, which according to the invention is indicated by two pawls I, II acting oppositely acting on a driver 3 arranged on the switch shaft 2.
  • the driver 3 is formed in two parts and in particular indicated by a perforated disc.
  • On the driver 3 blocking positions and / or blocking devices are provided, in which the pawls for I and II, which are not visible here between the driver 3 and the spring 10 on the shaft, engage.
  • the pawls I and II are shown in the following figures. They act advantageously opposite, so that by this additional blocking device blocking is possible.
  • the driver 3 is detachably fixedly arranged on the switching shaft 2.
  • the voltage of the on-switching spring 10 via the trained as a perforated disc driver 3, which acts on at least one drive lever, not shown here.
  • the switch-disconnector is then blocked in a cocked position by the engagement of the pawls.
  • two tension magnets 12, 13 are arranged, which can also act on a switch lever 15 at the on or off pawl to block them via a lever 14 either or unlock.
  • the Off-switching spring 17 is located on a frame 18 and is spaced from the on-switching spring arranged. However, it is also (not shown here or visible) coupled to the switching shaft 2.
  • the ON-switching spring Upon actuation of the ON-switching spring, the OFF-switching spring is automatically tensioned, so that a further switching operation by means of the second spring is executable.
  • FIGS. 2a and 2b Details of the spring force drive according to FIG. 1 are shown in FIGS. 2a and 2b. Certain features described in FIG. 1 are better understood here. The reference numerals are used analogously.
  • the movement of the shift lever rotates the perforated disc in a clockwise direction.
  • the pull lever on the bolt is moved along and releases the latch.
  • the switch turns on (clockwise), while the springs are tensioned.
  • the position indicator is moved and "on” displayed by means of a lever, for example the rod and the swivel lever.
  • the standby display is unlocked.
  • the internal functions are as follows: The rotary movement of the gear lever causes the orifice plate to be turned counterclockwise.
  • the pulling lever carried along on the bolt is moved in the direction of the rear wall of the housing and takes the pawl "off” with the swivel plate. This is unlatched by it.
  • the springs turn off the switch.
  • the position indicator is moved and displayed "off”.
  • a remote switching by electromagnetic switch actuation takes place, for example, when switching such that by pressing the on-button of the magnet 13, the trigger 14 against the pawl "on” presses. This turns counterclockwise and “beats” against the latch. The pawl "on” is unlatched and the tension spring switches the switch on via the tension spring and via the drive lever as well as the pawl "off” the driver.
  • the display shows "on” at the same time. Switching off is done by pressing the magnet 12. Here, the rod 15 is pulled down. The pawl of the magnet is turned clockwise and strikes against the pawl. It unlatches and the springs turn the stem to the off position. The display then also shows "off”.
  • the basic structure of switch-disconnector as they are known in the art, also remains substantially contained by the inventive solution.
  • the basic structure is characterized by a base frame, standard supporters, contact blades and connection contacts, optionally a tilting tube and a storage drive.
  • the advantages of the known switches are retained by the solution according to the invention. However, there is another advantage added, namely, that you can make the entire matter much cheaper and in particular by the arrangement of the invention also can realize an additional switching operation.
  • the solution according to the invention allows a manual as well as a motor circuit.
  • the indications "on” and “off” are automatically actuated so that the operator always has precise information about the current state of the switch-disconnector.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP07016806A 2006-10-07 2007-08-28 Disjoncteur sectionneur avec entraînement à ressort Withdrawn EP1912230A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006047818 2006-10-07
DE102007002918A DE102007002918A1 (de) 2006-10-07 2007-01-19 Lasttrennschalter mit Federkraftantrieb

Publications (2)

Publication Number Publication Date
EP1912230A2 true EP1912230A2 (fr) 2008-04-16
EP1912230A3 EP1912230A3 (fr) 2009-01-14

Family

ID=38921794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07016806A Withdrawn EP1912230A3 (fr) 2006-10-07 2007-08-28 Disjoncteur sectionneur avec entraînement à ressort

Country Status (1)

Country Link
EP (1) EP1912230A3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012059811A1 (fr) 2010-11-04 2012-05-10 Larsen & Toubro Limited Mécanisme à enclenchement mécanique amélioré, à basculement double et / ou à trois positions d'un interrupteur électrique coupe-charge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH594279A5 (en) * 1975-03-18 1977-12-30 Concordia Sprecher Schalt Toggle drive unit for medium voltage switch - has symmetrical double spring which reduces bearing load and gives compact construction
DE3006228A1 (de) * 1980-02-20 1981-08-27 Concordia Sprecher-Schaltgeräte GmbH, 7024 Filderstadt Vorrichtung zum steuerbaren blockierung und ausloesung einer vorspannbaren schaltwelle eines lasttrennschalters
DE3044327A1 (de) * 1980-11-25 1982-10-14 Felten & Guilleaume Energietechnik GmbH, 5000 Köln Lasttrennschalter mit einem eine blockiereinrichtungaufweisenden federspeicherantrieb
DE3114727A1 (de) * 1981-04-11 1982-10-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Federantrieb fuer elektrische schaltgeraete
DE4418642A1 (de) * 1994-05-27 1995-11-30 Driescher Eltech Werk Lasttrennschalter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH594279A5 (en) * 1975-03-18 1977-12-30 Concordia Sprecher Schalt Toggle drive unit for medium voltage switch - has symmetrical double spring which reduces bearing load and gives compact construction
DE3006228A1 (de) * 1980-02-20 1981-08-27 Concordia Sprecher-Schaltgeräte GmbH, 7024 Filderstadt Vorrichtung zum steuerbaren blockierung und ausloesung einer vorspannbaren schaltwelle eines lasttrennschalters
DE3044327A1 (de) * 1980-11-25 1982-10-14 Felten & Guilleaume Energietechnik GmbH, 5000 Köln Lasttrennschalter mit einem eine blockiereinrichtungaufweisenden federspeicherantrieb
DE3114727A1 (de) * 1981-04-11 1982-10-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Federantrieb fuer elektrische schaltgeraete
DE4418642A1 (de) * 1994-05-27 1995-11-30 Driescher Eltech Werk Lasttrennschalter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012059811A1 (fr) 2010-11-04 2012-05-10 Larsen & Toubro Limited Mécanisme à enclenchement mécanique amélioré, à basculement double et / ou à trois positions d'un interrupteur électrique coupe-charge

Also Published As

Publication number Publication date
EP1912230A3 (fr) 2009-01-14

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