EP2575155A1 - Gerät zur Verteilung von Strom mittlerer Spannung - Google Patents

Gerät zur Verteilung von Strom mittlerer Spannung Download PDF

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Publication number
EP2575155A1
EP2575155A1 EP12306078A EP12306078A EP2575155A1 EP 2575155 A1 EP2575155 A1 EP 2575155A1 EP 12306078 A EP12306078 A EP 12306078A EP 12306078 A EP12306078 A EP 12306078A EP 2575155 A1 EP2575155 A1 EP 2575155A1
Authority
EP
European Patent Office
Prior art keywords
contacts
electrical
called
crank
rotation
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
EP12306078A
Other languages
English (en)
French (fr)
Other versions
EP2575155B1 (de
Inventor
Denis Perrin
Didier Tamisier
Florent Pitis
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 Industries SAS
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 Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP2575155A1 publication Critical patent/EP2575155A1/de
Application granted granted Critical
Publication of EP2575155B1 publication Critical patent/EP2575155B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H33/6661—Combination with other type of switch, e.g. for load break switches
    • 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
    • H01H33/125—Load break switches comprising a separate circuit breaker
    • H01H33/126—Load break switches comprising a separate circuit breaker being operated by the distal end of a sectionalising contact arm

Definitions

  • the present invention relates to an electrical distribution apparatus intended to be interposed between two parts of an electrical circuit so as to ensure at least the function of current flow between the parts and cut-off of the current in the event of an electrical fault.
  • an electrical distribution cell of the kind mentioned above, as described in the patent application is known.
  • FR 2 940 516 This cell comprises a switch or a circuit breaker also performing the disconnector function and, in series with this switch (or circuit breaker) a selector at least two positions respectively a current passage position and a grounding position.
  • This cell is designed to conduct a current of 630 A and is therefore not able to conduct higher current levels, such as 1250A.
  • these cells that can withstand a higher nominal current than the mid-range generally correspond within a range with low consumption volumes, which means that the industrial costs of such an adaptation are not justified.
  • the present invention solves these problems and proposes a simple and economical electrical distribution cell that can withstand a large nominal current without considerably increasing the necessary investments and the number of subsets made.
  • the subject of the present invention is an apparatus of the kind mentioned above, this apparatus being characterized in that it comprises an electrical cut-off or interruption member, said first, and an electrical severing member, said second, mounted in parallel, the two electrical organs can both take an open position and a closed position, in the open position and respectively in the closed position of the apparatus, and in that the opening and closing of the first and second electrical members is controlled by the first electrical member, and in that during the passage of the apparatus from the closed position to the open position, the contacts of the severing member are first open creating between its contacts an arc and a voltage arc, allowing the current to be derived substantially completely in the cutoff or interruption member, the opening of these contacts continuing until the end.
  • TTR transient recovery voltage
  • said first electrical member is first closed in order to establish the passage of the current through this member, then, the second electrical member is closed so that the current is distributed in the two aforementioned electrical organs.
  • the first electrical member is a circuit breaker or a switch with at least two positions, respectively a closed position and an open position
  • the second electrical member is a disconnector has at least two positions respectively a closed position and an open position
  • this member for interrupting or cutting the aforementioned current comprises contact pressure springs able to ensure the pressure between the fixed and movable contacts of said interruption and cut-off member after the closure of these contacts, and in that the compression / decompression phase of these contact pressure springs is used to actuate the disconnector.
  • said cut-off or interruption of the current element comprises a vacuum interrupter.
  • this apparatus comprises two different kinematics respectively for the two electrical members, said kinematics being mechanically connected to the control shaft of the contacts of the so-called first electrical member, the two kinematics having different gear ratios relative to each other. tree audit.
  • the drive kinematics of the disconnector has been made to amplify the rotational movement of the disconnector relative to that of the control shaft of the circuit breaker.
  • the drive kinematics of the first member of the contacts is performed so as to increase the gear ratio at the end of the closing stroke, so as to have at the end of the closing, a great race angular control of the disconnector corresponding to a short compression stroke of the contact pressure springs.
  • this increase of the gear ratio is achieved by bringing together an assembly constituted by a so-called third crank hingably connected to a so-called second connecting rod, a dead center line.
  • this apparatus comprises means for the end of the opening maneuver of the apparatus, the control device opens the contacts of the first member by minimizing the amplitude of the rotation of the disconnector.
  • these means comprise the approach of a dead-line crossing line, an assembly comprising a so-called third crank hingably connected to a so-called first connecting rod.
  • this apparatus comprises means for providing, during the compression phase of the contact pressure springs for closing the apparatus, a large rotation of the control shaft enabling a sufficient rotation of the control shaft to be made. disconnector to reach a distance necessary to hold the TTR.
  • this apparatus is controlled by a control device comprising a so-called second crank integral in rotation with the control shaft of the first electrical member, said crank being connected in an articulated manner to one of the ends of a so-called second connecting rod, another end of which is connected in an articulated manner to one of the ends of a so-called third crank integral in rotation with a shaft rotatably mounted about an axis said third fixed frame, and another end is hingedly connected to a so-called first rod connected in an articulated manner, at another end, to a so-called crank first supporting the disconnector knife, said first crank being rotatably mounted about an axis said first fixed frame, the rotation of said shaft being prevented by an unlockable latching system to allow its rotation during a maneuver d manual or automatic opening of the apparatus.
  • a control device comprising a so-called second crank integral in rotation with the control shaft of the first electrical member, said crank being connected in an articulated manner to one of the ends of a so-called second connecting rod, another end of which is connected in an articulate
  • the cutoff or interruption member comprises a support rod of its movable contact, which rod is secured to a sheath having two bearing surfaces and around which is mounted the contact pressure spring, said spring being interposed between on the one hand, a first upper said plate interposed between the first bearing surface of the sheath and the spring, and on the other hand a so-called lower plate interposed between this spring and a bar, which bar is mounted rotating relative to the so-called second connecting rod and slidably mounted around the sheath, said bar being supported by means of two opposite flats respectively on the so-called bottom plate and the second bearing surface of the sheath.
  • it is a medium voltage electrical distribution apparatus.
  • a multipole electrical equipment comprising for each pole two cells 1.2 mounted in parallel and electrically connected on one side, to a first set of bars a and the opposite side, to a second set of bars b.
  • the first cell 1, located on the right of the figure, comprises in this particular embodiment, a vacuum circuit breaker 3 comprising a vacuum interrupter 4 in series. with a two-position switch 5 respectively a closed position and a grounding position.
  • the second cell 2 located to the left of the first, comprises a switch with two positions respectively a closed position of passage of the current and a sectioning position.
  • the equipment is in the closed position, the two circuits being closed because the circuit breaker and the disconnector are closed, the rated current being distributed in the two cells.
  • the apparatus according to the invention is controlled by a control device allowing to drive by a single action of the operator, the contacts 8,9 of the bulb 4 and 6,7 of the disconnector 5 so as to guarantee the steps previously mentioned.
  • the disconnector 5 comprising a knife 10 constituting a movable contact and a fixed stud 11 representing a fixed contact.
  • This knife 10 is supported by a crank 12 said first free fit in rotation about an axis (X) said first fixed belonging to the frame of the apparatus.
  • the bulb 4 of the circuit breaker has been represented, said bulb comprising, in a manner known per se, an envelope of substantially cylindrical shape enclosing a fixed contact 8 with respect to said envelope and a movable contact 9 supported by a rod.
  • mobile 13 along the axis of the bulb, said rod 13 having at one of its ends, a contact pad 14 and being mechanically connected by its opposite end to a crank 15 said second integral with a shaft
  • a said pole shaft or control shaft of the bulbs said shaft supporting a number of cranks, this number corresponding to the number of poles of the apparatus.
  • This shaft has poles is rotatably mounted about a Y axis fixed relative to the frame of the apparatus.
  • Each of these so-called seconds handwheels 15 has an end 15a integral in rotation with the pole shaft, and an opposite end 15b, mechanically connected to the control rod of the movable contact of the apparatus.
  • a bar 16 forming a partial ball joint is mounted articulated in an opening provided at this end of the crank 15, this bar having two opposite flats 16a, 16b and being traversed by a sleeve 17 slidably mounted within this rod and having a threaded tubular orifice 18 inside which is mounted and screwed the control rod 13 of the movable contact 9 of the bulb 4.
  • this sleeve 17 has at its two opposite ends, two diameter parts. 19,20 and respectively forming two bearing surfaces 21,22.
  • this sleeve 17 are also mounted a so-called first plate 23 having a face 23a bearing on one of said 21 said abovementioned abutment surfaces 21,22 of the sleeve 17, and whose other face 23b serves as surface d pressing one end 24a of a contact pressure spring 24, which is supported by its opposite end 24b, on a so-called second plate 25 mounted around the sleeve 17 and bearing on one 16a of the flats of the aforementioned ball, while the other flat portion 16b of the ball joint is intended to bear against the so-called second bearing surface 22 of the sleeve.
  • first plate 23 having a face 23a bearing on one of said 21 said abovementioned abutment surfaces 21,22 of the sleeve 17, and whose other face 23b serves as surface d pressing one end 24a of a contact pressure spring 24, which is supported by its opposite end 24b, on a so-called second plate 25 mounted around the sleeve 17 and bearing on one 16a of the flats of the
  • the so-called first crank 12 and the so-called second crank 15 are mechanically connected by a mechanical assembly comprising a so-called first link 25 connected in an articulated manner by one of its ends, to the so-called first crank 12 and at its opposite end, at one end of a so-called third crank 26 integral with a shaft rotatably mounted about an axis said third Z fixed with respect to the frame of the apparatus.
  • This so-called third crank 26 is also connected in an articulated manner by another end, at one of the ends of a so-called second rod 27, which is connected in an articulated manner by another of its ends to the so-called second crank 15 secured to the pole tree A.
  • the control device is in the closed position, the knife 10 of the disconnector 5 being closed on the fixed pad 11 and the fixed 8 and movable contacts 9 of the bulb 4 are closed.
  • the control shaft A of the circuit breaker 3 is locked by an attachment system preventing it from being rotated under the effect of the opening springs not shown and mounted around the contact pressure springs. 24, these springs also bearing on the above-mentioned lower plate 25.
  • the contact pressure springs 24, as well as the opening springs of the circuit breaker mechanism 3 are compressed and the so-called second cranks 15 are in high position.
  • the locking device of the control shaft A of the circuit breaker 3 is deactivated, which leads to the fact that the contact pressure springs 24 can initially decompress and lead at the same time time the cranks said seconds 15 on which they are supported, in rotation in the clockwise direction, through the said lower plate 25 bearing on the ball 16, which is integral with the crank said second 15.
  • This involves by means of the so-called second rod 27, the rotation of the so-called third crank 26 integral with the control shaft in the clockwise direction, and thereby the rotation of the so-called first rod 25 and also of the said first crank 12 supporting the knife 10, which rotates in the clockwise direction thereby causing partial opening of the movable contact 10 of the 5.
  • the separation distance of the switch contacts is sufficient to hold the TTR (transient recovery voltage) which is the voltage that will be established across the contacts of the disconnector and the bulb when a new closing of the 'equipment.
  • TTR transient recovery voltage
  • these cranks did not drive the drive rod 13 of the movable contact 8 of the bulb, because during this movement, the spring 24 has driven the plate 25 in translation the along the sleeve 17, which plate 25 has transmitted this movement to the bar 16, but this set has moved without reaching the shoulder, located at the bottom of the sleeve and formed by the so-called second bearing surface 22 of the sleeve 16 .
  • the opening springs of the mechanism which are also resting on the so-called bottom plate 25, will take over and drive the shaft of the poles A, and the cranks 15 in the direction of the clockwise, which causes the displacement of the rod 13 and thus the opening of the contacts 8, 9 of the bulb 4, as illustrated in FIG. figure 7 .
  • This movement of the cranks will be transmitted to the knife of the disconnector via the kinematics described above.
  • the closing springs of the mechanism drive the pole shaft A and the so-called second cranks 15 counterclockwise, which causes compression of the springs. contact pressure 24 via the second bearing surface 22 of the sleeve 17, the bar 16 and the lower plate 25. The closing force is then transmitted by these springs 24 to the rod 13 of driving the movable contact 9 of the bulb 4 through the so-called upper plate 23 and the other bearing surface 21 of the sleeve 17.
  • cranks 15 causes the other, the counterclockwise rotation of the so-called third crank 26 via the so-called second rod 27, and the rotation in the counterclockwise direction of the so-called first crank 12 by means of the so-called first connecting rod, which results in the closing the contacts 8, 9 of the disconnector 5, illustrated position on the figures 3 and 4 .
  • the lengths of the connecting rods and cranks are chosen such that during this compression phase of the contact pressure springs 24, the rotation of the control shaft A makes it possible to achieve sufficient rotation of the movable contact of the disconnector 5. to reach the distance that it was necessary to reach during the opening to maintain the transient recovery voltage.
  • the drive kinematics of the disconnector 5 were made by amplifying this large angular travel of the pole shaft to allow rotation of the disconnector allowing the holding of the TTR.
  • this kinematics is performed in such a way that one also approaches a dead center passage line M between the so-called third crank 26 and the so-called first rod 25 at the end. opening operation, so as to allow the control to open the cutoff contacts by minimizing the rotation of the disconnector.
  • this neutral passage line allows the switch 5 to be gently stopped and thus to avoid oscillating violently at the end of opening, which could cause parasitic rotation movements of the control at the end of opening.
  • control device of the apparatus has been designed so as to produce two different kinematics for each electrical member, each member being mechanically connected to the output shaft of the circuit breaker control device.
  • gear ratios being different between the two kinematics, these ratios being determined by the ratios of length between the different connecting rods and cranks.
  • the present invention has thus made it possible to produce a mechanical device making it possible to maneuver in the same maneuver a cut-off member and a disconnecting member arranged in parallel and whose disconnecting member must open first in order to derive all the current in the cut-off member, and whose sectioning member must close last, as this avoids to have a power of closure, in order to derive a part of the current of the cut-off device, this after closure of the circuit by the sectioning member.
  • This device ensures a sufficient isolation distance of the disconnector for the holding of the TTR before the cut-off contacts start to separate, this using the compression / decompression phases of the contact pressure springs to actuate the disconnector .
  • This device makes it possible to maneuver two electric organs with a shift of the opening and the closing of one with respect to the other, with a kinematics without rupture of movement constituted by pivot connections (no light for empty strokes ) and therefore not generating shocks.
  • This device makes it possible to maneuver two electric members whose offset from one with respect to the other is guaranteed by a rigid and reliable kinematic chain.
  • This device also makes it possible to guarantee the state concordance of two different electrical organs (one can not be opened if the other is not).
  • the drive mechanism can be of any type, ie with separate closing and opening springs, with a single spring, single spring for closing and opening.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP12306078.2A 2011-09-27 2012-09-07 Gerät zur verteilung von strom mittlerer spannung Not-in-force EP2575155B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1102930A FR2980633B1 (fr) 2011-09-27 2011-09-27 Appareillage de distribution electrique moyenne tension

Publications (2)

Publication Number Publication Date
EP2575155A1 true EP2575155A1 (de) 2013-04-03
EP2575155B1 EP2575155B1 (de) 2019-09-04

Family

ID=46800148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12306078.2A Not-in-force EP2575155B1 (de) 2011-09-27 2012-09-07 Gerät zur verteilung von strom mittlerer spannung

Country Status (3)

Country Link
EP (1) EP2575155B1 (de)
CN (1) CN103021728B (de)
FR (1) FR2980633B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104716576A (zh) * 2013-12-17 2015-06-17 施耐德电器工业公司 中压电气保护装备的接地控制装置
WO2017011370A1 (en) * 2015-07-13 2017-01-19 Eaton Corporation Component for electric power system, and contact assembly and open air arcing elimination method therefor

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013207436B4 (de) * 2013-04-24 2021-06-02 Siemens Aktiengesellschaft Antrieb für ein Schaltgerät und ein Schaltgerät mit einem derartigen Antrieb
CN103489704B (zh) * 2013-09-25 2015-12-16 苏州朗格电气有限公司 一种真空断路器操作装置
CN109326486B (zh) * 2018-11-30 2025-04-11 江西诚控电力设备有限公司 一种开关用延时控制的简易传动结构
CN118352205B (zh) * 2024-06-17 2024-10-25 浙江正泰电气科技有限公司 断路器与隔离开关的组合结构及开关柜
CN118398432B (zh) * 2024-06-25 2024-10-25 浙江正泰电气科技有限公司 负荷开关及环网柜

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0172409A2 (de) * 1984-08-28 1986-02-26 Kabushiki Kaisha Toshiba Hybrider Lastschalter
EP0433184A1 (de) * 1989-12-11 1991-06-19 Merlin Gerin Hybrid-Mittelspannungsschalter
FR2940516A1 (fr) 2008-12-18 2010-06-25 Schneider Electric Ind Sas Cellule de distribution electrique moyenne tension

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
GB1126362A (en) * 1965-07-06 1968-09-05 Ass Elect Ind Improvements in and relating to electric circuit breakers
EP0599742B1 (de) * 1992-11-26 1999-01-20 Schneider Electric Sa Öffnungs- und Schliessmechanismus für einen elektrischen Mittel- oder Hochspannungsschalter
CN1148255A (zh) * 1995-10-13 1997-04-23 费尔腾和古伊勒奥梅能源股份公司 电流断路器
KR100319407B1 (ko) * 1999-10-07 2002-01-05 이종수 배전용 개폐기기의 아크 소호장치
DE102006008933B4 (de) * 2006-02-22 2009-06-18 Siemens Ag Elektrisches Schaltgerät
CN101969006B (zh) * 2010-08-19 2013-12-18 中国电力科学研究院 提高特高压交流敞开式隔离开关转换电流开合能力的方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0172409A2 (de) * 1984-08-28 1986-02-26 Kabushiki Kaisha Toshiba Hybrider Lastschalter
EP0433184A1 (de) * 1989-12-11 1991-06-19 Merlin Gerin Hybrid-Mittelspannungsschalter
FR2940516A1 (fr) 2008-12-18 2010-06-25 Schneider Electric Ind Sas Cellule de distribution electrique moyenne tension

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104716576A (zh) * 2013-12-17 2015-06-17 施耐德电器工业公司 中压电气保护装备的接地控制装置
FR3015107A1 (fr) * 2013-12-17 2015-06-19 Schneider Electric Ind Sas Dispositif de commande de la mise a la terre d'un appareillage de protection electrique moyenne tension constitue d'au moins deux appareils de protection electrique
EP2887369A1 (de) * 2013-12-17 2015-06-24 Schneider Electric Industries SAS Steuervorrichtung der Erdung einer elektrischen Mittelspannungs-Schutzanlage, die aus mindestens zwei elektrischen Schutzgeräten besteht
RU2662237C2 (ru) * 2013-12-17 2018-07-25 Шнейдер Электрик Эндюстри Сас Устройство управления заземелением устройства электрической защиты среднего напряжения, образованное по меньшей мере двумя устройствами электрической защиты
CN104716576B (zh) * 2013-12-17 2019-04-05 施耐德电器工业公司 中压电气保护装备的接地控制装置
WO2017011370A1 (en) * 2015-07-13 2017-01-19 Eaton Corporation Component for electric power system, and contact assembly and open air arcing elimination method therefor
US9679724B2 (en) 2015-07-13 2017-06-13 Eaton Corporation Component for electric power system, and contact assembly and open air arcing elimination method therefor

Also Published As

Publication number Publication date
CN103021728A (zh) 2013-04-03
FR2980633B1 (fr) 2013-09-06
EP2575155B1 (de) 2019-09-04
FR2980633A1 (fr) 2013-03-29
CN103021728B (zh) 2018-06-15

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