EP0704872A1 - Mittelspannungsschalter oder Schutzschalter - Google Patents

Mittelspannungsschalter oder Schutzschalter Download PDF

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Publication number
EP0704872A1
EP0704872A1 EP95410095A EP95410095A EP0704872A1 EP 0704872 A1 EP0704872 A1 EP 0704872A1 EP 95410095 A EP95410095 A EP 95410095A EP 95410095 A EP95410095 A EP 95410095A EP 0704872 A1 EP0704872 A1 EP 0704872A1
Authority
EP
European Patent Office
Prior art keywords
driver
switch according
contact
spring
arcing
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
EP95410095A
Other languages
English (en)
French (fr)
Other versions
EP0704872B1 (de
Inventor
Denis Schneider Electric Perrin
Reynald Schneider Electric Marin-Pache
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric SE
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 Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0704872A1 publication Critical patent/EP0704872A1/de
Application granted granted Critical
Publication of EP0704872B1 publication Critical patent/EP0704872B1/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
    • 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 present invention relates to a medium-voltage switch or circuit breaker comprising an arc extinguishing chamber formed by a cylinder closed by two bottoms, said chamber containing a fixed arcing contact secured to one of the aforementioned bottoms and electrically connected to a first current supply conductor, and a movable arcing contact mounted to slide longitudinally through the other of the two bottoms and electrically connected to a second current supply conductor.
  • the aforementioned movable arcing contact is moved in translation by a control mechanism ensuring the closing and the separation of the arcing contacts, the pressure of said contacts in the closed position being maintained by means of a pressure spring acting on the movable contact and whose force corresponds substantially to the electrodynamic forces of repulsion of arcing contacts generated by the passage of current.
  • Japanese patent application No. 190063/1993 describes several embodiments of a circuit breaker, one of which has the characteristics mentioned above.
  • the pressure spring is mounted in compression between an intermediate piece acting on the movable contact and a plate connected to a control rod articulated on the support of the circuit breaker.
  • circuit breaker described in patent document FR 2 677 168 of the applicant, comprising two main contacts shunted by two arcing contacts abutted in the closed position.
  • the movable contact is controlled by a mechanism comprising on the one hand, a toggle formed by a crank and a connecting rod to said movable contact, and on the other hand a pressure spring precompressed between the crank and a pin belonging to the connecting rod. connection and sliding in a light provided in said crank, said spring being active when the toggle is in the vicinity of neutral.
  • circuit breakers of the aforementioned type have certain drawbacks.
  • One of these drawbacks is that the inertia of the moving parts, during the opening and closing operations of the arcing contacts, influences the speed of movement of the movable contact.
  • Another of these drawbacks is that the maintenance of the contact force generates stresses in the parts external to the breaking device because the mechanism for controlling the movable contact participates in the maintenance of the contact pressure.
  • the present invention solves these problems and proposes a switch or circuit breaker of simple design and of reduced size, reducing the number of moving parts whose inertia influences the speed and acceleration of the moving contact, while removing the constraints generated. in parts outside the cut-off device when maintaining contact pressure.
  • the present invention relates to a medium voltage electric switch of the kind including an arc extinguishing chamber of substantially cylindrical shape and closed by two fixed bottoms, said chamber containing a fixed arcing contact integral with the one of the aforementioned funds and electrically connected to a first current supply conductor and a movable arcing contact mounted to slide longitudinally through the other of the two funds, said movable contact being electrically connected to a second supply conductor of the current and being moved by a control mechanism ensuring the closing and the separation of said arcing contacts, the pressure of the contacts in the closed position being maintained by a spring acting on the movable contact,
  • this switch being characterized in that it comprises an energy accumulation mechanism cooperating with the aforementioned control mechanism so as to ensure during a successful closing operation ively, the closing of the arcing contacts, then a compression of the aforementioned spring, said spring in the compressed state acting on the movable contact to produce the pressure of the arcing contacts, the energy accumulated during the compression of the spring being used to ensure rapid
  • the above-mentioned energy accumulation mechanism comprises a coach in the general shape of a frame, mounted to slide in a first fixed support and housing the aforementioned chamber, said coach being supported, by its upper part, on the one of the ends of the aforementioned spring, the other end of which is in abutment on the aforementioned support, while its lower part cooperates with a dead center passage system connected in an articulated manner on the one hand, to the control mechanism and on the other hand hand, in contact with a moving arc.
  • this mechanism further comprises a stop intended to limit the translational travel of the driver during an opening operation of the arcing contacts.
  • the neutral passage system comprises at least one toggle joint articulated to a connecting rod for driving the control mechanism, said toggle joint being in the vicinity of the neutral position in the position of closing of the arcing contacts and cooperating by its lower part with the lower part of the driver.
  • this system comprises two knee pads located on either side of the coach and connected by a connecting element bearing on the lower part of the coach.
  • the aforementioned toggle (s) is (are) each constituted by two connecting rods connected in an articulated manner by one of their ends to each other, said connecting rods being connected in an articulated manner by their other end respectively, to the movable contact and to a guide rod, articulated on a second fixed support.
  • the toggle joint (s) is (are) each constituted by a double crank articulated on the movable arcing contact and comprising two simple cranks respectively connected in an articulated manner to the driving rod of the control mechanism and to a connecting rod hingedly connected to a guide rod hinged on a second fixed support.
  • the neutral passage system comprises at least one cam connected in an articulated manner to a driving rod of the control mechanism and comprising an arcuate groove in which slides a lug secured to the movable contact, said cam being further connected in an articulated manner to a guide rod articulated on a second fixed support and cooperating with the lower part of the driver.
  • the first and second supports are respectively electrically connected to the first and second current supply conductors.
  • the aforementioned spring is mounted around the rod of a screw passing through the upper part of the driver and the first fixed support to be screwed into the fixed arcing contact.
  • the movable contact bears on a stop formed on the driver so that the impact energy generated by the displacement of the movable contact is absorbed by the spring.
  • This pole D comprises an arc extinguishing chamber 5 constituted by a closed cylinder by two bottoms 5a, 5b and containing two arcing contacts 1, 2 respectively fixed and mobile.
  • the fixed arcing contact 1 is integral with one of the aforementioned bottoms 5a and electrically connected to a first current supply conductor 20, while the movable arcing contact 2 is slidably mounted through the other of the bottom 5b by being electrically connected to a second current supply conductor 21, and mechanically to a control mechanism C.
  • This control mechanism C comprises a drive rod (or control rod 11) hingedly connected to a double crank 30 connected to another connecting rod 31, which is connected to a drive shaft 32.
  • this pole D further comprises a mechanism called energy storage A comprising a drive device, called driver 4, generally in the form of a frame, a neutral passage system S, and a pressure spring 3.
  • the driver 4 comprises an upper part 4a forming a lifting beam and a lower part 4b in the shape of a U, these parts being ant connected by two tie rods 4c, 4d slidably mounted through a support 6, called first, constituting the first conductor for supplying the above-mentioned current 20.
  • the lower U-shaped part 4b of the driver 4 is slidably mounted through a second support 13 constituting the second current supply conductor 21.
  • the arc extinguishing chamber 5 is housed inside the driver 4 and the pressure spring 3 is supported, by one 3a of its ends, on the upper part 4a of the driver, and, by its other end 3b on the aforementioned fixed support 6. This spring is also mounted around the rod 22 of a screw 23 passing through the upper part 4a of the driver 4 and the first support 6 for screwing into the fixed arcing contact 1.
  • the system for passing through neutral S comprises on each side of the trainer 4, two knee pads 7, 8 each constituted by two connecting rods 9,10 connected in an articulated manner by the one of their ends.
  • one of the connecting rods is a double crank 14 consisting of two simple cranks 15, 16, said crank being connected in an articulated manner at a point situated between its two cranks 15, 16 at the movable contact 2.
  • One 16 of the cranks simple is further connected to an intermediate rod 17, which is connected to a guide rod 12 hinged on the second fixed support 13, while the other crank 15 is hingedly connected to the control rod 11.
  • the two knee pads 7, 8 are connected by an axis or the like (not shown) bearing on the lower part 4b of the coach 4.
  • the neutral passage system S comprises, on each side of the driver 4, a cam 18 articulated on the control rod 11 and comprising a circular groove 18a in which slides a lug 18b secured to the movable arcing contact 2, said cam 18 being further articulated on the aforementioned guide rod 12 while bearing on the lower part 4b of the driver 4.
  • circuit breaker of the invention The operation of the circuit breaker of the invention will be described below with reference to the figures.
  • the pole D cut-off mechanism is in the stable opening position, the arcing contacts 1, 2 being open.
  • the control rod 11 has moved in the direction of the arrow F, which has caused a rotation of the crank 14 (respectively of the connecting rod 9) around the axis X, in the anticlockwise direction, causing an upward movement of the movable contact 2, until the arcing contacts 1, 2 are closed ( Figures 3 and 6). In this position, the contact pressure is not ensured.
  • the drive rod 11 is moved in the opposite direction to the previous one, which generates a rotation of the crank 14 and of the rod 17.
  • the energy accumulated by the spring 3 during compression becomes kinetic energy
  • the driver 4 is biased upwards by the spring 3 until it comes to bear against the stop 33 formed at the upper part of the screw 23 ( Figures 2,3 and 4), position shown in Figures 3 and 6.
  • the crank 14 and the connecting rod 17 are set in speed, which causes separation at high speed of the arcing contacts 1, 2, and the abutment of the movable contact 2, on another abutment 34, formed on the driver 4, the impact energy thus being absorbed by the pressure spring 3.
  • a circuit breaker or switch has therefore been produced in which the inertia of the parts related to the maintenance of the contact pressure does not affect the speed of movement of the movable contact, and in which the stresses due to the maintenance contact force are minimized in the parts outside the circuit breaker.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP19950410095 1994-09-29 1995-09-05 Mittelspannungsschalter oder Schutzschalter Expired - Lifetime EP0704872B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9411775 1994-09-29
FR9411775A FR2725303B1 (fr) 1994-09-29 1994-09-29 Interrupteur ou disjoncteur moyenne tension

Publications (2)

Publication Number Publication Date
EP0704872A1 true EP0704872A1 (de) 1996-04-03
EP0704872B1 EP0704872B1 (de) 2000-05-10

Family

ID=9467499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950410095 Expired - Lifetime EP0704872B1 (de) 1994-09-29 1995-09-05 Mittelspannungsschalter oder Schutzschalter

Country Status (5)

Country Link
EP (1) EP0704872B1 (de)
CN (1) CN1062378C (de)
DE (1) DE69516790T2 (de)
ES (1) ES2147827T3 (de)
FR (1) FR2725303B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012086216A1 (ja) * 2010-12-20 2012-06-28 三菱電機株式会社 開閉機器
WO2012086293A1 (ja) * 2010-12-20 2012-06-28 三菱電機株式会社 電力用開閉装置
DE112010005359B4 (de) * 2010-03-08 2015-07-09 Mitsubishi Electric Corporation Leistungsschaltanlage
CN110544597A (zh) * 2019-09-30 2019-12-06 山东泰开高压开关有限公司 一种800kV外置式接地开关用辅助灭弧装置及使用方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1020582C2 (nl) * 2002-05-13 2003-11-25 Holec Holland Nv Aandrijfstang voor schakelaar.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372353A (en) * 1966-10-20 1968-03-05 Electric Machinery Mfg Co Toggle operated electric vacuum switch
EP0159960A1 (de) * 1984-04-12 1985-10-30 Siemens Aktiengesellschaft Vakuumschaltgerät mit einer Antriebsvorrichtung sowie mit einer an dem beweglichen Anschlussbolzen der Schaltröhre abgestützten Feder
DE3726739A1 (de) * 1987-08-07 1988-03-03 Slamecka Ernst Kontaktdruckerzeugungsvorrichtung insbesondere fuer vakuumschalter in einfach- oder zweifach-reihen-anordnung
FR2677168A1 (fr) 1991-06-03 1992-12-04 Merlin Gerin Disjoncteur moyenne tension a energie de commande reduite.
DE4133092A1 (de) * 1991-09-30 1993-04-01 Siemens Ag Mehrpoliger vakuumschalter mit einer polantriebseinheit fuer jede vakuumschaltroehre
JPH05190063A (ja) 1992-01-17 1993-07-30 Toshiba Corp 真空遮断器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372353A (en) * 1966-10-20 1968-03-05 Electric Machinery Mfg Co Toggle operated electric vacuum switch
EP0159960A1 (de) * 1984-04-12 1985-10-30 Siemens Aktiengesellschaft Vakuumschaltgerät mit einer Antriebsvorrichtung sowie mit einer an dem beweglichen Anschlussbolzen der Schaltröhre abgestützten Feder
DE3726739A1 (de) * 1987-08-07 1988-03-03 Slamecka Ernst Kontaktdruckerzeugungsvorrichtung insbesondere fuer vakuumschalter in einfach- oder zweifach-reihen-anordnung
FR2677168A1 (fr) 1991-06-03 1992-12-04 Merlin Gerin Disjoncteur moyenne tension a energie de commande reduite.
DE4133092A1 (de) * 1991-09-30 1993-04-01 Siemens Ag Mehrpoliger vakuumschalter mit einer polantriebseinheit fuer jede vakuumschaltroehre
JPH05190063A (ja) 1992-01-17 1993-07-30 Toshiba Corp 真空遮断器

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112010005359B4 (de) * 2010-03-08 2015-07-09 Mitsubishi Electric Corporation Leistungsschaltanlage
US9082563B2 (en) 2010-03-08 2015-07-14 Mitsubishi Electric Corporation Power breaker
WO2012086216A1 (ja) * 2010-12-20 2012-06-28 三菱電機株式会社 開閉機器
WO2012086293A1 (ja) * 2010-12-20 2012-06-28 三菱電機株式会社 電力用開閉装置
JP5116905B2 (ja) * 2010-12-20 2013-01-09 三菱電機株式会社 開閉機器
JP5150011B2 (ja) * 2010-12-20 2013-02-20 三菱電機株式会社 電力用開閉装置
US8941022B2 (en) 2010-12-20 2015-01-27 Mitsubishi Electric Corporation Switching apparatus
US9324521B2 (en) 2010-12-20 2016-04-26 Mitsubishi Electric Corporation Power switchgear
DE112011104445B4 (de) * 2010-12-20 2018-10-25 Mitsubishi Electric Corporation Schaltvorrichtung
CN110544597A (zh) * 2019-09-30 2019-12-06 山东泰开高压开关有限公司 一种800kV外置式接地开关用辅助灭弧装置及使用方法

Also Published As

Publication number Publication date
DE69516790D1 (de) 2000-06-15
EP0704872B1 (de) 2000-05-10
FR2725303B1 (fr) 1996-10-31
ES2147827T3 (es) 2000-10-01
CN1062378C (zh) 2001-02-21
DE69516790T2 (de) 2000-11-16
FR2725303A1 (fr) 1996-04-05
CN1125353A (zh) 1996-06-26

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