EP0277851B1 - Antrieb mit Verriegelung für einen Dreistellungsschalter - Google Patents

Antrieb mit Verriegelung für einen Dreistellungsschalter Download PDF

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Publication number
EP0277851B1
EP0277851B1 EP88400048A EP88400048A EP0277851B1 EP 0277851 B1 EP0277851 B1 EP 0277851B1 EP 88400048 A EP88400048 A EP 88400048A EP 88400048 A EP88400048 A EP 88400048A EP 0277851 B1 EP0277851 B1 EP 0277851B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
transmission device
crankshaft
operating mechanism
crank
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
EP88400048A
Other languages
English (en)
French (fr)
Other versions
EP0277851A1 (de
Inventor
Robert Micoud
Michel Berne
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0277851A1 publication Critical patent/EP0277851A1/de
Application granted granted Critical
Publication of EP0277851B1 publication Critical patent/EP0277851B1/de
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
    • 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
    • H01H3/3047—Power arrangements internal to the switch for operating the driving mechanism using spring motor adapted for operation of a three-position switch, e.g. on-off-earth

Definitions

  • a mechanism of the kind mentioned is described in French patent FR-A-2,500,222 and comprises a single spring associated with a toggle joint and a control crank.
  • Such a tumbler type mechanism is perfectly suitable for switches having average breaking performance, but is not suitable for devices of higher performance, in particular circuit breakers.
  • the object of the invention is to increase the power of a control mechanism, so that it can be used either in a fuse switch or in a circuit breaker.
  • the mechanism according to the invention is characterized in that the energy storage system comprises a first spring arranged between a first cleat for driving the transmission member and a crankshaft wedged on a shaft extending parallel to the axis of the transmission member and a second spring interposed between a second drive stopper of the transmission member and a grounding control crank in mechanical connection with said locking means and a pivoting retaining plate cooperates on the one hand with an opening control lock by means of a one-way locking, and on the other hand with the crankshaft by means of a first latch released during the opening stroke by the action release of the first spring, following the unlocking of the lock, and of a second hooking capable of occupying an active position of positive locking of the transmission member at the start of the co urse for closing the crankshaft and an inactive position for unlocking said member.
  • the mechanism according to the invention is of the hooking type particularly suitable for controlling three-position circuit breakers.
  • the manual closing control is operated by means of the crankshaft having a cam cooperating with two rollers angularly offset on the retaining plate to constitute the first and second hookings.
  • the retaining plate has a snap-in spout intended to lock the first drive cleat when the second latch is in the active position by the action of the crankshaft. This results in maximum compression of the first spring during the closing operation.
  • the kinematic chain further comprises a braking device made active during the opening stroke after separation of the contacts to ensure temporary blocking of the transmission member.
  • the transmission member advantageously has a roller capable of coming into engagement with a retractable lever in an intermediate position of the opening stroke, the braking being effected by means of a hydraulic damper.
  • Such a device is particularly advantageous when the arc is cut by magnetic blowing using a permanent magnet.
  • the latching type control mechanism 10 is used to actuate the movable assembly (not shown) of a three-phase circuit breaker with separable contacts, the assembly being housed in a medium-voltage electrical distribution cell.
  • the moving part of the circuit breaker can occupy three distinct stable positions, namely a position F for closing the contacts, an intermediate position O for opening and isolation after separation of the contacts, and a position T for earthing in which the start cable of each phase is electrically connected to earth by via the corresponding mobile contact of the circuit breaker.
  • the latching mechanism 10 is arranged between two plates 18, 20, parallel in metallic material and comprises two springs 12, 14, of compression, with energy accumulation, capable of cooperating with a transmission member 16 integral with the drive lever of the moving crew.
  • the lower spring 12 ensures the closing of the circuit breaker, while the upper spring 14 causes the opening and the earthing.
  • the transmission member 16 is mounted for rotation on a transverse axis 22 between three positions ( Figures 1 to 3) angularly offset corresponding to the three positions F, O and T of the circuit breaker.
  • the guide of the lower spring 12 is supported at one end on a first cleat 24 for driving the transmission member 16, and at the opposite end on a crankpin of a closing control crankshaft.
  • the upper spring guide is interposed between a second drive cleat for the transmission member and an anchor point located on a grounding control crank 34.
  • the crankshaft 28 is rotatably mounted on a shaft 36, and has a cam-shaped ridge 38 cooperating with two rollers 40, 42, fixed at predetermined locations on a retaining plate 44.
  • a locking crank 46 is pivotally mounted limited on an axis 48 to ensure the locking of the transmission member 16 in each of the positions F, O and T of Figures 1 to 3.
  • a roller 50 of the locking crank 46 is intended to stop the rotational movement of the 'transmission member 16 in the open position O ( Figure 2), and in the earthed position T ( Figure 3). Between the closed F positions ( Figure 1) and the open O positions ( Figure 2) of the mechanism 10, the locking crank 46 remains stationary in abutment against a stop 52 which also serves as a stop for the transmission member 16 when this the latter is in the closed F position ( Figure 1).
  • a connecting rod 54 is arranged with clearance between the crank 34 for earthing control, and the crank 46 for locking the transmission member 16, so as to allow the latter to move in rotation towards the earthing position T, when the crank 34 is actuated clockwise around its axis 35, from position O ( Figure 2) to position T ( Figure 3).
  • One end of the rod 54 has an oblong opening 56 in which is housed a crank pin 58 of the earthing crank 34.
  • the opposite end of the rod 54 carries a drive axis 60 capable of moving in a curvilinear groove 62 of the locking crank 46, when passing from the open position O to the earthed position T , and reciprocally.
  • the retaining plate 44 is pivotally mounted on an intermediate axis 64, and is equipped with a hooking spout 66 intended to cooperate with the first cleat 24 of the transmission member 16 during the manual closing stroke of the crankshaft 28
  • a lock 68 is mounted with limited rotation on an axis 70 and controls the opening of the circuit breaker by unlocking the retaining plate 44.
  • a return spring biases the lock 68 clockwise towards the locked position in which the retaining plate 44 is locked unidirectionally in rotation in the trigonometric direction.
  • the angular displacement of the latch 68 towards the unlocked position occurs in the trigonometric direction, either by means of an actuator 72 for automatic triggering controlled by a trigger, or by means of a button 74 for manual opening control.
  • the actuator 72 may be constituted by an electromagnetic relay, a striker of a fuse circuit breaker, and any other tripping auxiliary.
  • the lock 68 comprises a latching tab 76 which cooperates in the locked position with a roller 78 located on an extension of the retaining plate 44.
  • a braking system me designated by the general reference 80, comprises a retractable bent lever 82 cooperating via a driving lever 83 with a damper 84 of the hydraulic dashpot type for temporarily braking the transmission member 16 during the race opening of the mobile equipment.
  • the two levers 82, 83 are mounted with limited pivoting on the same axis 86, on which is also threaded a torsion spring 88 ( Figure 1) urging the lever 82 retractable clockwise, and allowing the closing of the mechanism 10.
  • a return spring (not shown) is integrated in the damper 84 to ensure the return of the retractable lever 82 in the middle active position (FIG. 1) after the thrust exerted by the roller 94 controlling the control member. transmission 16 in the intermediate position of the opening stroke.
  • the circuit breaker is opened by means of the automatic tripping actuator 72 or the manual control button 74, causing the latch 68 to pivot about the axis 70 in the counterclockwise direction and the unlocking of the retaining plate 44.
  • the arrows in FIG. 1 indicate the direction of movement of the moving parts during the opening command of the mechanism 10.
  • the reaction of the lower spring 12 on the crankpin 26 causes the crankshaft 28 to move in rotation in a clockwise direction, followed by the erasure of the first attachment 92 by pivoting of the retaining plate 44 in the trigonometric direction.
  • the lower spring 12 expands to the right, when the cam 38 of the crankshaft 28 slides on the roller 42, and the torque exerted by the lower spring 12 on the transmission member 16 gradually decreases.
  • the transmission member 16 begins to pivot counterclockwise, and is moved to the open position O.
  • Temporary blocking of the moving part of the circuit breaker by the braking device 80 occurs after the separation of the contacts, during phase I of extinction of the arc (see FIG. 4).
  • the length of the stroke AB of the moving assembly between the separation of the contacts, and the intervention of the braking device 80 is advantageously chosen in a range between 10 and 20 millimeters, when the circuit breaker is gaseous isolation and equipped with a magnetic blowing device by rotation of the arc by means of a permanent magnet.
  • the dielectric medium is restored during the BO race of phase II after extinction of the arc and neutralization of the braking device 80.
  • Figure 2 shows the mechanism 10 in the open position.
  • the crankshaft 28 has made a half-turn clockwise from position F, and the transmission member 16 is in stable abutment against the roller 50 of the locking crank 46.
  • the retaining plate 44 is again locked by the latch 68, and the position of the two locking cranks 46 and grounding 34 remained unchanged during the entire opening stroke.
  • the erasing of the hooking spout 66 takes place automatically when the cam 38 escapes from the roller 40.
  • the relaxation of the lower spring 12 to the left then causes the transmission member 16 to rotate clockwise, and the mechanism 10 returns to the closed position F ( Figure 1).
  • the roller 94 of the transmission member 16 causes the lever 82 to recede without intervention of the braking device 80.
  • the torsion spring 88 then returns the lever 82 to its active position, after passage of the roller 94 .
  • the earthing operation is carried out manually from from the open position O (FIG. 2) of the mechanism 10, by means of an operating member (not shown) rotating the earthing crank 34 a quarter of a turn clockwise (see arrow FT on figure 2).
  • the retraction of the connecting rod 54 to the right causes the locking crank 46 to tilt in a clockwise direction, allowing the pivoting member 16 to pivot in the direction of the transmission member 16 under the action of the upper spring 14.
  • FIG. 3 shows the earthing position T of the mechanism 10.
  • the crankshaft 28 and the retaining plate 44 have remained stationary and do not intervene during this maneuver between the opening positions O and earthing T.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Agricultural Machines (AREA)

Claims (7)

1. Antriebsmechanismus einer elektrischen Vorrichtung, insbesondere eines mehrpoligen Leistungsschalters oder eines mit Sicherungen verbundenen Unterbrechers, der in einer elektrischen Verteilerzelle eingefügt ist, in Verbindung mit den Anschlusskabeln, wobei der bewegliche Teil des Leistungsschalters drei verschiedene, feste Stellungen einnehmen kann, d.h. eine erste Schliesstellung F der Kontakte, eine zweite mittlere Oeffnungsstellung O der Kontakte, und eine dritte Erdungsstellung T, in welcher die Abgangskabel elektrisch mit der Erde durch bewegliche Kontakte der entsprechenden Phasen verbunden sind, wobei die kinematische Kette des genannten Mechanismus (10) aufweist:
- ein elastisches Energiespeichersystem (12, 14), das mit dem drehbaren Uebertragungsorgan (16) verbunden ist, welches mit dem beweglichen Teil vereint ist,
- Steuermittel (28, 68, 72, 74, 34), die mit dem Energiespeichersystem (12, 14) zusammenwirken, um das Uebertragungsorgan (16) in eine der drei Stellungen zu bewegen, wobei die Erdung von der zweiten mittleren Stellung O aus stattfindet,
- und Blockierungsmittel (46, 50, 52) des Uebertragungsorgans (16) in jeder der drei Stellungen F, O,T des Leistungsschalters, dadurch gekennzeichnet, dass das Energiespeichersystem eine erste Feder (12) aufweist, die zwischen einem ersten Reiter (24) zum Antrieb des Uebertragungsorgans (16) und einer Kurbelwelle (28) angeordnet ist, welche auf einer Welle (36) gelagert ist, die sich parallel zur Achse (22) des Uebertragungsorgans (16) erstreckt, und eine zweite Feder (14), die zwischen einem zweiten Reiter (30) zum Antrieb des Uebertragungsorgans (16) und einer Erdungssteuerkurbel (34) eingefügt ist, in mechanischer Verbindung mit den genannten Blockierungsmitteln, und dass eine drehbare Zurückhaltplatte (44) einerseits mit einem Oeffnungssteuerungsriegel (68) zusammenarbeitet mittels einer einseitig gerichteten Verriegelung (76, 78), und andererseits mit der Kurbelwelle (28) mittels einer ersten Sperrvorrichtung (92), die befreit wird während des Oeffnungsweges durch die Entspannung der ersten Feder (12), die auf die Entriegelung des Riegels (68) folgt, und mittels einer zweiten Sperrvorrichtung (100), die eine aktive Stellung zur positiven Verriegelung des Uebertragungsorgans (16) und eine inaktive Stellung zur Entriegelung des genannten Organs (16) einnehmen kann.
2. Antriebsmechanismus eines Leistungsschalters gemäss Anspruch 1, dadurch gekennzeichnet, dass die Zurückhaltplatte (44) begrenzt schwenkbar auf einer Achse (64) gelagert ist, die im Innern eines Vierecks angeordnet ist, dessen Spitzen den Stellen entsprechen, wo sich die Achse (70) des Riegels (68), die Achse (35) der Erdungssteuerkurbel (34), die Welle (36) der Kurbelwelle (38), und die Schwenkachse (22) des Uebertragungsorgans (16) befinden.
3. Antriebsmechanismus eines Leistungsschalters gemäss Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Kurbelwelle (28) mit einem Steuernocken (38) ausgerüstet ist, der mit zwei winklig auf der Zurückhaltplatte (44) versetzten Rollen (40, 42) zusammenarbeitet, um die genannte erste und zweite Sperrvorrichtung (92, 100) zu bilden.
4. Antriebsmechanismus eines Leistungsschalters gemäss Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass die Zurückhaltplatte (44) einen Sperrhaken (66) aufweist, der dazu bestimmt ist, den ersten Reiter (24) zu verriegeln, wenn sich die zweite Sperrvorrichtung (100) durch die Tätigkeit der Kurbelwelle (28) in aktiver Stellung befindet.
5. Antriebsmechanismus eines Leistungsschalters gemäss einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die kinematische Kette ausserdem eine Bremsvorrichtung (80) aufweist, die während des Oeffnungsweges nach Trennung der Kontakte aktiv ist, um eine zeitweise Blockierung des Uebertragungsorgans (16) zu gewährleisten, und dass der Oeffnungssteuerungsriegel (68) entweder durch einen automatischen Auslösebetätiger (72) oder durch einen von Hand bedienten Steuerknopf (74) gesteuert wird.
6. Antriebsmechanismus eines Leistungsschalters gemäss Anspruch 5, dadurch gekennzeichnet, dass die Bremsvorrichtung (80) mit einem versenkbaren Hebel (82) versehen ist, der mit einem hydraulischen Dämpfer (84) zusammenarbeitet, und dass das Uebertragungsorgan (16) eine Rolle (94) aufweist, die mit dem genannten Hebel (82) zusammenkommt, in einer mittleren Stellung des Oeffnungsweges des genannten Organs (16).
7. Antriebsmechanismus eines Leistungsschalters gemäss einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Bremsmittel des Uebertragungsorgans (16) in jeder der drei Stellungen F, O und T des Leistungsschalters eine Verriegelungskurbel (46) aufweisen, die mit Spielraum mit der Erdungssteuerkurbel (34) verbunden ist, durch eine Verbindungsstange (54), welche in der Lage ist, die genannte Verriegelungskurbel zwischen einer ersten Blockierungsstellung in der Schliesstellung F und Oeffnungsstellung O des Mechanismus und einer zweiten Blockierungsstellung in der Erdungsstellung T zu betätigen.
EP88400048A 1987-01-21 1988-01-11 Antrieb mit Verriegelung für einen Dreistellungsschalter Expired - Lifetime EP0277851B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8700750 1987-01-21
FR8700750A FR2609839B1 (fr) 1987-01-21 1987-01-21 Mecanisme a accrochage de commande d'un disjoncteur a trois positions

Publications (2)

Publication Number Publication Date
EP0277851A1 EP0277851A1 (de) 1988-08-10
EP0277851B1 true EP0277851B1 (de) 1992-04-08

Family

ID=9347179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88400048A Expired - Lifetime EP0277851B1 (de) 1987-01-21 1988-01-11 Antrieb mit Verriegelung für einen Dreistellungsschalter

Country Status (11)

Country Link
US (1) US4821008A (de)
EP (1) EP0277851B1 (de)
BR (1) BR8800205A (de)
CA (1) CA1303655C (de)
DE (1) DE3869801D1 (de)
ES (1) ES2031609T3 (de)
FR (1) FR2609839B1 (de)
IN (1) IN170185B (de)
PT (1) PT86580B (de)
TR (1) TR23153A (de)
YU (1) YU47463B (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2696866B1 (fr) * 1992-10-13 1994-12-02 Merlin Gerin Mécanisme d'actionnement d'un interrupteur à trois positions.
US5424701A (en) * 1994-02-25 1995-06-13 General Electric Operating mechanism for high ampere-rated circuit breakers
FR2770680B1 (fr) * 1997-11-06 1999-12-03 Schneider Electric Sa Mecanisme de commande a bielles pour un interrupteur a trois positions
FR2794278B1 (fr) * 1999-05-28 2001-08-10 Alstom Dispositif de commande rapide pour un appareil de connexion a haute tension, notamment un sectionneur de terre
KR100325408B1 (ko) * 1999-10-26 2002-03-04 이종수 회로차단기용 접점개폐장치
DE10061164C1 (de) * 2000-11-30 2002-08-22 Siemens Ag Schalterantrieb
FR2916300B1 (fr) * 2007-05-15 2009-07-10 Schneider Electric Ind Sas Dispositif de commande de la mise en contact ou hors contact de deux pieces et appareil electrique comportant un tel dispositif
FR2925210B1 (fr) * 2007-12-17 2010-01-15 Areva T&D Ag Commande compacte pour appareillage electrique moyennes et hautes tensions
US8093965B2 (en) * 2008-12-03 2012-01-10 Schneider Electric USA, Inc. Add-on trip module for multi-pole circuit breaker
US8093964B2 (en) * 2008-12-29 2012-01-10 Schneider Electric USA, Inc. Add-on trip module for multi-pole circuit breaker
US8063328B2 (en) * 2009-09-16 2011-11-22 Eaton Corporation Electrical switching apparatus and charging assembly therefor
CN101826705B (zh) * 2010-05-06 2012-04-04 纪元电气集团有限公司 高压柜行程开关控制装置
CN103337405B (zh) * 2013-06-04 2015-06-24 宁波舜利高压开关科技有限公司 具有重合闸和接地关合功能的三工位机构及其操动方法
CN104658805B (zh) * 2015-02-04 2016-10-05 宁波舜利高压开关科技有限公司 双操作轴慢速旋转式三工位机构
CN105006410B (zh) * 2015-07-13 2018-03-30 国家电网公司 一种用于开关柜上的远程拉合断路器装置
CN105513848B (zh) * 2016-01-12 2018-05-08 博纳方格（天津）电气设备有限公司 用于断路器的弹簧操动机构
WO2020200951A1 (de) * 2019-03-29 2020-10-08 Siemens Aktiengesellschaft Federsystem für ein antriebssystem mit kupplung, federsystem mit kupplung, antriebssystem mit kupplung und federsystem und schaltanlage mit einem solchen antriebssystem
CN114823207B (zh) * 2022-03-18 2023-06-09 珠海优特电力科技股份有限公司 三工位刀闸开关的操作装置以及三工位刀闸开关

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3036670C2 (de) * 1980-09-29 1982-07-01 Siemens AG, 1000 Berlin und 8000 München Antrieb für einen Mittelspannungsschalter
FR2500222A1 (fr) * 1981-02-13 1982-08-20 Merlin Gerin Mecanisme de manoeuvre pour appareillage de commutation electrique a trois positions distinctes
IT1137121B (it) * 1981-04-02 1986-09-03 Sace Spa Interruttore elettrico,particolarmente limitatore di corrente

Also Published As

Publication number Publication date
BR8800205A (pt) 1988-08-30
YU7888A (en) 1990-08-31
YU47463B (sh) 1995-10-03
US4821008A (en) 1989-04-11
FR2609839A1 (fr) 1988-07-22
PT86580A (pt) 1989-01-30
DE3869801D1 (de) 1992-05-14
PT86580B (pt) 1993-12-31
IN170185B (de) 1992-02-22
ES2031609T3 (es) 1992-12-16
CA1303655C (en) 1992-06-16
EP0277851A1 (de) 1988-08-10
TR23153A (tr) 1989-04-18
FR2609839B1 (fr) 1989-04-07

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