EP0061417A1 - Lasttrennschalter mit einer Antriebsvorrichtung zur sprungartigen Ein- und Ausschaltung - Google Patents

Lasttrennschalter mit einer Antriebsvorrichtung zur sprungartigen Ein- und Ausschaltung Download PDF

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Publication number
EP0061417A1
EP0061417A1 EP82730036A EP82730036A EP0061417A1 EP 0061417 A1 EP0061417 A1 EP 0061417A1 EP 82730036 A EP82730036 A EP 82730036A EP 82730036 A EP82730036 A EP 82730036A EP 0061417 A1 EP0061417 A1 EP 0061417A1
Authority
EP
European Patent Office
Prior art keywords
switch
shaft
actuating shaft
springs
lever
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Withdrawn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
EP82730036A
Other languages
German (de)
English (en)
French (fr)
Inventor
Paul Küenzle
Karl-Heinz Voss
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0061417A1 publication Critical patent/EP0061417A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • 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

Definitions

  • the invention relates to a load-break switch for the medium-voltage range, in particular to a swivel support switch which has a frame and a drive device which has an actuating shaft mounted in the side cheeks of the frame and a switch shaft and springs coupled to these for sudden switching on and off, and with two profile rails connecting the cheeks as carriers of stationary assemblies of the adjacent current paths.
  • Switch disconnectors of this type have become known in various designs, e.g. B. according to Siemens magazine 41 (1967), number 4, pages 321/322 or according to DE-AS 2 711 342. Based on this, the invention is based on the object, an actuation option both on the left and on the right side to create the switch disconnector and at the same time to make the drive device so space-saving that the dimensions of the frame required for reasons of mechanical stability are not exceeded as far as possible.
  • this object is achieved in that the actuating shaft is formed on both sides projecting beyond the cheeks and that the springs are arranged substantially in the plane of the frame and together with the switch shaft and with both shafts cooperating parts of the drive device in the space between the actuating shaft and one of the two profile rails are arranged or supported thereon.
  • This arrangement makes it possible to place a hand lever or a similar part freely on the projecting ends of the actuating shaft on the left or the right side of the frame, and thus to switch the load separation switch on and off, unhindered by external drive parts.
  • the actuating shaft can also be arranged at a distance from the profile rail assigned to the fixed contact pieces in such a way that an insulating plate can be inserted into the space between the actuating shaft and the fixed contact pieces in the switched-off state. It is thus achieved that the use of the insulating plates, which is prescribed for safety reasons, shields all drive parts and thus maintenance work can be carried out safely.
  • the arrangement of the springs provided according to the invention can be realized in an advantageous manner in that both the closing spring and the opening spring at one end are slidably mounted in one of the rails Guide rod is connected and aw cooperates its other end with a tension lever sitting on the actuating shaft.
  • These tensioning levers can expediently be dimensioned short, because if suitable springs are selected, sufficient tensioning torque can be achieved even with short lever arms.
  • the advantage of this arrangement lies in its compact design, which is achieved by eliminating steering levers or similar parts.
  • the function as a jump drive can be achieved in a simple manner in that for the activation and for the deactivation, one is mounted on one side of the profile rail and is triggered by a trigger pin of the actuating shaft Liftable pawl is provided, and that both pawls are arranged around a latching disc seated on the switch shaft in the manner of pliers.
  • both the closing spring and the opening spring are tensioned by turning the actuating shaft.
  • the switch shaft is prevented from rotating by the switch pawl until, when the switch spring is sufficiently tensioned, the trigger pin on the actuating shaft lifts the switch pawl and releases the switch shaft.
  • the switch shaft In the switch-on position, the switch shaft is held by the switch pawl against the action of the tensioned switch-off spring. By turning the actuating shaft in the direction of opening, the release pin lifts the release pawl and thereby releases the switch shaft in the direction of opening.
  • the peculiarity of the mode of operation achieved in this way is that the drive device acts as a jump drive when switched on, but acts as a memory drive when switched off, and both switching operations are caused by corresponding.
  • the switch disconnector can be made to be triggered automatically instead of by hand.
  • a pawl lever pivotable about a fixed bearing and acting on the guide rod of the switch-off spring in a link-like manner can be provided.
  • the opening spring itself is held.
  • a direction of action of the latch is achieved in such a way that, for example, the connection to the trigger pin of a fuse (HH fuse) can be established in a simple manner.
  • Other triggers can also be used in a simple manner.
  • Fig. 1 shows a switch disconnector according to the invention in a side view.
  • FIG. 2 A plan view of the switch disconnector shown in FIG. 1 is shown in FIG. 2.
  • FIG. 3 Another embodiment of a switch disconnector is shown in a plan view corresponding to FIG. 2, but only partially, in FIG. 3.
  • FIGS. 4 and 5 are sections along the planes correspondingly designated in FIG. 2, FIG. 6 being rotated by 180 ° with respect to FIGS. 4 and 5.
  • the switch disconnector 1 can be used for the range of medium operating voltages. It has a frame 2, which consists of two side cheeks 3 and 4 and two connecting rails 5 and 6 connecting them. These profile rails serve as supports for the fixed parts of three current paths of the switch disconnector which are arranged at a distance from one another. On the mounting rail 5 there are three support insulators 7, to each of which a connection device 10 is attached.
  • the load break switch 1 therefore belongs to the group of so-called swivel support switches, the basic design of which has become known, for example, from FR-PS 813 635.
  • the further profile rail 6 also carries support insulators 15, on each of which a carrier 16 is attached.
  • Each of these carriers contains an extinguishing device 17 for switching off load currents and contact lamellae 20 for permanent contact with the switching element 12 in the switched-on state.
  • the load break switch 1 is shown in the off position, in which the switching arm formed from the contact piece 12, the support insulator 13 and the switch shaft 14 is approximately parallel to the support insulator 7.
  • the switch shaft 14 is rotated clockwise and thereby the switching piece 12 is brought into engagement with the contact blades 20.
  • a slotted driver 21 engages with a latching head 22 of the extinguishing device 17.
  • the switch shaft 14 is rotated in the opposite direction, as a result of which the switching element 12 is separated from the contact plates 20.
  • the switching pin 23 of the quenching device 17 is pulled out along the dash-dotted line 24 in FIG. 1 by the driver 21 and thereby the flowing load current is interrupted inside the quenching device 17.
  • the locking head 22 of the switching pin 23 detaches from the driver 21 and returns to the rest position shown under the influence of a return spring contained in the extinguishing device 17.
  • the switching operations described above are carried out by means of a '.Antriebsvoriques belongs in addition to the aforementioned switch actuation shaft 14 is a shaft 24 to that of the frame 2 is supported also in the cheeks 3, and 4 and projects on both sides beyond these cheeks. Each of these protruding ends 25 and 26 can therefore be used to switch the load break switch 1 on and off.
  • the actuating shaft 24 is arranged relatively close to the switch shaft 14, so that between the actuating shaft 24 and the parts of the current path located on the profiled rail 6 have a clearance or a free space which can be used for inserting an insulating plate 18 indicated in FIG. 1 in a known manner. This insulating plate is thus able to completely separate the live carriers 16 and the contact parts mounted thereon from the drive device which, apart from slightly protruding parts, is arranged entirely between the actuating shaft 24 and the profile rail 5.
  • the drive device comprises a set of closing springs 27 and a set of opening springs 28, which can be tensioned together by the actuating shaft 24.
  • one spring would be sufficient for switching on and off.
  • it is advantageous to use two springs instead of a spring. which then have a smaller diameter and can be accommodated more cheaply in a parallel arrangement in the plane of the frame.
  • the egg switching springs 27 and the opening springs 28 ′ are arranged approximately in a symmetrical distribution with respect to the width of the frame 2.
  • the closing springs 27 are suspended at one end in a crossmember 30, which is fastened to a guide rod 33 guided in openings 31 (FIG. 2) of the profile rail 5. Further openings 32 (FIG. 4) serve for the passage of the closing springs 27.
  • the ends of the closing springs 27 opposite the cross member 30 engage a crank arm 34 which is fastened to the switch shaft 14.
  • the actuating shaft 24 carries a finger-like tensioning lever 35 which interacts with an adjustable end piece 36 of the guide rod 33.
  • a similar arrangement is provided for the opening springs 28. These are also suspended at one end in a cross-piece 40 which is fastened to a guide rod 41. There are also openings in the profile rail 5 for the passage of the two opening springs 28 and for the longitudinally displaceable mounting of the guide rod 41, of which an opening 42 can be seen in FIG. 6.
  • the ends of the switch-off springs 28 opposite the cross member 40 are supported in abutments 43 which are inserted into recesses in the profile rail 5.
  • the guide rod 41 is provided with a drive pin 44 which interacts with a drive lever 45 similar to the tensioning lever 35 and which is seated on the switch shaft 14.
  • the actuating shaft 24 carries a release pin 56 which, depending on the angular position of the actuating shaft 24, interacts with the ratchet lever 50 or the ratchet lever 51 and lifts it out of its latched position.
  • the closing springs 27 are relaxed, and the actuating shaft 24 is in the angular position corresponding to the off position of the switch disconnector 1.
  • the latching disk 55 lies with a step 60 on a shoulder 61 of the latching lever 50 on or faces this at a short distance. If the actuating shaft 24 is now rotated, after passing through an idle stroke caused by the distance of the tensioning levers 35 and 46 from the end pieces 36 and 47, the closing springs 27 and the opening springs 28 are tensioned together.
  • the drive device described thus works as a spring drive when switched on, it acts as a memory drive when switched off because the switch-off energy is already available and only needs to be retrieved. This happens by rotating the actuating shaft 24 in a clockwise direction, ie in the same direction as the required rotation of the switch shaft 14, until the release pin 56, as shown in FIG. 5, abuts the switch-off pawl lever 51 and its shoulder 63 lifts off the step 62 of the latching disk 55.
  • the drive pin 44 of the guide rod 41 already resting on the drive lever 45 now transmits the spring force to the switch shaft 14 and moves the switch arm back into the position shown in FIG. 1.
  • a differently designed ratchet lever 65 is provided instead of the ratchet lever 51 (Fig. 5), which is pivotally mounted on a support plate 66 connected to the profile rail 5.
  • the ratchet lever 65 has an elongated hole 67 into which a pin 70 attached to the end of the guide rod 41 engages.
  • the end of the pawl lever 65 is designed as a latching lug 71 which can be snapped into a pawl 72 which is likewise mounted on the support plate 66.
  • the pawl lever 65 can be released by pivoting the pawl 72 in the direction of the arrow 73. This can be done by a striker of a high-performance fuse used in connection with switch disconnectors or by other suitable triggers and other mechanisms.
  • the drive device is distinguished by a space-saving, compact and simple construction.
  • the switch can be used in switchgear as required by selectively actuating the switch disconnector from the left or the right side. Thanks to the way it works as a storage drive when switched off the load-break switch can also be switched manually with little delay and can be used with minor changes for automatic or remote-controlled tripping.
  • the extinguishing device not described in more detail above can be designed, in particular, according to the patent application filed on the same day with the designation "switch disconnector with isolating contacts and with an extinguishing device", file number P 31 ?? (VPA 81 P 3707. DE) Details of the driver in the patent application also filed on the same day with the designation “switch disconnector with a pivoting switching arm and with an extinguishing device", file number P 31 .. .... (VPA 81 P 3710 DE).

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Electronic Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
EP82730036A 1981-03-20 1982-03-18 Lasttrennschalter mit einer Antriebsvorrichtung zur sprungartigen Ein- und Ausschaltung Withdrawn EP0061417A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813111792 DE3111792A1 (de) 1981-03-20 1981-03-20 Lasttrennschalter mit einer antriebsvorrichtung zur sprungartigen ein- und ausschaltung
DE3111792 1981-03-20

Publications (1)

Publication Number Publication Date
EP0061417A1 true EP0061417A1 (de) 1982-09-29

Family

ID=6128270

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82730036A Withdrawn EP0061417A1 (de) 1981-03-20 1982-03-18 Lasttrennschalter mit einer Antriebsvorrichtung zur sprungartigen Ein- und Ausschaltung

Country Status (10)

Country Link
US (1) US4460813A (enrdf_load_stackoverflow)
EP (1) EP0061417A1 (enrdf_load_stackoverflow)
JP (1) JPS57168430A (enrdf_load_stackoverflow)
DE (1) DE3111792A1 (enrdf_load_stackoverflow)
DK (1) DK119982A (enrdf_load_stackoverflow)
EG (1) EG14924A (enrdf_load_stackoverflow)
ES (1) ES8303813A1 (enrdf_load_stackoverflow)
IN (1) IN156011B (enrdf_load_stackoverflow)
NO (1) NO820874L (enrdf_load_stackoverflow)
YU (1) YU60182A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6797909B2 (en) * 2003-02-27 2004-09-28 Mcgraw-Edison Company High-voltage loadbreak switch with enhanced arc suppression
US10818452B1 (en) 2018-08-30 2020-10-27 Robert Neal Hendrix Power outage isolation device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR808888A (fr) * 1935-07-06 1937-02-17 Delle Atel Const Electr Dispositif d'enclenchement et de déclenchement brusques pour interrupteurs ou sectionneurs
FR814302A (fr) * 1935-11-05 1937-06-21 Delle Atel Const Electr Dispositif de commande d'enclenchement brusque en fin de course et de déclenchement brusque pour tous interrupteurs
DE967500C (de) * 1943-04-22 1957-12-19 Siemens Ag Federkraftspeicher mit zwanglaeufiger Verklinkung fuer Schaltschloesser von Schaltgeraeten, insbesondere Motorschutzschaltern u. dgl.
GB794191A (en) * 1954-10-01 1958-04-30 English Electric Co Ltd Improvements in and relating to electric switches
DE1590872A1 (de) * 1965-02-25 1970-05-21 Vanossi S P A Selbsttaetiger Funkenloeschtrenner fuer elektrische Leitungen,betaetigbar unter Belastung,mit selbsttaetiger Entblockung der Kontaktbewegung
FR2175619A1 (enrdf_load_stackoverflow) * 1972-03-16 1973-10-26 Acetp
DE2711342A1 (de) * 1977-03-16 1978-09-21 Sachsenwerk Licht & Kraft Ag Mittelspannungslasttrennschalter
DE2742772A1 (de) * 1977-09-20 1979-03-22 Siemens Ag Antriebsvorrichtung fuer elektrische leistungsschalter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL104574B (enrdf_load_stackoverflow) * 1932-03-23
DE672244C (de) * 1935-07-06 1939-02-28 Const Electr De Delle Sa Atel Vorrichtung zum schnellen Ein- und Ausruecken eines Stromunterbrechers
DE946638C (de) * 1951-04-06 1956-08-02 Sachsenwerk Licht & Kraft Ag Schubtrennschalter fuer zusaetzliche Lastabschaltung
JPS57657B2 (enrdf_load_stackoverflow) * 1974-01-23 1982-01-07
US3921109A (en) * 1974-06-20 1975-11-18 Westinghouse Electric Corp Circuit-interrupter
JPS5595228A (en) * 1979-01-12 1980-07-19 Mitsubishi Electric Corp Breaker
JPS5595227A (en) * 1979-01-12 1980-07-19 Mitsubishi Electric Corp Breaker
DE2907574C2 (de) * 1979-02-27 1984-05-17 Concordia Sprecher-Schaltgeräte GmbH, 7024 Filderstadt Löschkammer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR808888A (fr) * 1935-07-06 1937-02-17 Delle Atel Const Electr Dispositif d'enclenchement et de déclenchement brusques pour interrupteurs ou sectionneurs
FR814302A (fr) * 1935-11-05 1937-06-21 Delle Atel Const Electr Dispositif de commande d'enclenchement brusque en fin de course et de déclenchement brusque pour tous interrupteurs
DE967500C (de) * 1943-04-22 1957-12-19 Siemens Ag Federkraftspeicher mit zwanglaeufiger Verklinkung fuer Schaltschloesser von Schaltgeraeten, insbesondere Motorschutzschaltern u. dgl.
GB794191A (en) * 1954-10-01 1958-04-30 English Electric Co Ltd Improvements in and relating to electric switches
DE1590872A1 (de) * 1965-02-25 1970-05-21 Vanossi S P A Selbsttaetiger Funkenloeschtrenner fuer elektrische Leitungen,betaetigbar unter Belastung,mit selbsttaetiger Entblockung der Kontaktbewegung
FR2175619A1 (enrdf_load_stackoverflow) * 1972-03-16 1973-10-26 Acetp
DE2711342A1 (de) * 1977-03-16 1978-09-21 Sachsenwerk Licht & Kraft Ag Mittelspannungslasttrennschalter
DE2742772A1 (de) * 1977-09-20 1979-03-22 Siemens Ag Antriebsvorrichtung fuer elektrische leistungsschalter

Also Published As

Publication number Publication date
NO820874L (no) 1982-09-21
ES510581A0 (es) 1983-02-01
US4460813A (en) 1984-07-17
ES8303813A1 (es) 1983-02-01
EG14924A (en) 1985-06-30
YU60182A (en) 1984-12-31
JPS57168430A (en) 1982-10-16
DK119982A (da) 1982-09-21
DE3111792A1 (de) 1982-09-30
IN156011B (enrdf_load_stackoverflow) 1985-04-27

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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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Effective date: 19821022

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18W Application withdrawn

Withdrawal date: 19841105

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Inventor name: VOSS, KARL-HEINZ

Inventor name: KUEENZLE, PAUL