EP1933348A1 - High voltage circuit breaker with a gear with dead-center position - Google Patents
High voltage circuit breaker with a gear with dead-center position Download PDFInfo
- Publication number
- EP1933348A1 EP1933348A1 EP06405511A EP06405511A EP1933348A1 EP 1933348 A1 EP1933348 A1 EP 1933348A1 EP 06405511 A EP06405511 A EP 06405511A EP 06405511 A EP06405511 A EP 06405511A EP 1933348 A1 EP1933348 A1 EP 1933348A1
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- EP
- European Patent Office
- Prior art keywords
- contact piece
- contact
- movement
- circuit breaker
- dead center
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- 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.)
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- 230000033001 locomotion Effects 0.000 claims abstract description 100
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 49
- 230000001133 acceleration Effects 0.000 claims description 37
- 238000000926 separation method Methods 0.000 claims description 10
- 241000722921 Tulipa gesneriana Species 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000002441 reversible effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
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- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/904—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism characterised by the transmission between operating mechanism and piston or movable contact
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- 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
- H01H2033/028—Details the cooperating contacts being both actuated simultaneously in opposite directions
Definitions
- the present invention relates generally to electrical circuit breakers, and more particularly to dual power electrical circuit breakers.
- the invention also relates to methods of contact separation in an electrical circuit breaker.
- Switches in which a consumable contact, such as a quenching tulip, for separating an electrical connection from a further consumable contact, such as a pen, is moved away are known in the art. Switches are also known in which two burn-off contacts are moved in the opposite direction.
- a gas blast switch with two oppositely movable contact pieces is described.
- the contact pieces are coupled together via the insulating material nozzle and a lever mechanism.
- the lever mechanism comprises a arranged on the switch axis two-armed lever with hinged on both sides connecting rods.
- a high-voltage circuit breaker is described with a first arcing contact driving drive and a second arcing contact driving auxiliary drive.
- the auxiliary drive comprises three two-armed levers and is designed such that during a switch-off operation, the direction of movement of the drivable second arcing contact piece is reversible once or twice.
- Object of the present invention is to provide an improved dual drive for a circuit breaker.
- the object is achieved by the electric circuit breaker according to independent claim 1 and by the method according to independent claim 13. Further advantages, features, aspects and details of the invention and preferred embodiments of the invention will become apparent from the dependent claims, the description and the figures.
- an electrical circuit breaker with special double movement of the contacts typically comprises a first contact piece with a first burnup contact, in particular a tulip, and a second contact piece typically with a second burnup contact, in particular a pin.
- the circuit breaker further comprises a drive for moving the first contact piece in a first movement range along a switching axis, ie substantially parallel or anti-parallel to the switching axis, in particular relative to a housing, and a transmission for transmitting the movement of the first contact piece to a movement of the second contact piece.
- the first range of motion includes a contact portion and a separation portion.
- the Abbrandcarde s in contact ie a mechanical and electrical contact is provided when the first contact piece is in the contact portion, and they are mechanically separated from each other, ie, this is provided when the first contact piece in the separation portion located.
- the gear has a first dead position, which is traversed in the directed in particular in one direction along the shift axis movement of the first contact piece in the contact portion.
- the gear parts are dimensioned and arranged so that the first dead center is traversed.
- a dead center is present when there is substantially no movement of the second contact piece during movement of the first contact piece.
- a dead center is already present if this is fulfilled for (infinitesimal) small movements of the first contact piece about a position in the first movement range, ie in a linear approximation.
- there is a dead center when the first derivative of a lift curve, such as in Fig. 3b is shown, disappears.
- reversal points of the transmission ie extremes of the lift curve, dead spots.
- a dead center of the transmission is usually also a dead position of a transmission part or transmission joint. Such dead position of a transmission part or transmission joint is present when there is substantially no movement of the transmission part or the transmission joint during movement of the drive side directly upstream of the transmission part.
- the first dead center is in embodiments a reversal point for the pivotal movement of a preferably two-armed lever about its lever axis.
- the first dead center is also characterized in embodiments by a substantially right angle between a drive rod and the shift axis.
- a method for opening a contact of an electrical circuit breaker ie in particular for separating its Abbrandcarde
- the circuit breaker comprises a first contact piece with a first contact, in particular Abbrand token, a second contact piece with a second contact, in particular Abbrandcard, and a transmission.
- the method comprises the following steps: the first contact piece is moved in a separating direction along a switching axis; the transmission transmits the movement of the first contact piece to a particular associated therewith movement of the second contact piece along the shift axis; and the first contact and the second contact are separated by the movement of the contact pieces.
- the particular assigned movement of the second switching piece changes before disconnecting the contacts at least once, in embodiments even at least twice or three times, the direction, in particular by a first dead center of the transmission is passed through.
- the movement of the first contact piece comprises in embodiments an acceleration phase and then a movement phase, preferably at a substantially constant speed
- the movement of the second contact piece comprises a pre-acceleration phase which lasts until at least one or two or three changes of direction are completed or are then followed by an acceleration phase, which is characterized by a speed of the second contact piece to about 50% of its maximum speed, and then a movement phase.
- the acceleration phase of the second contact piece usually begins after the end of an analogously defined acceleration phase of the first contact piece.
- the burn-off contacts are separated in embodiments only after the end of the acceleration phase of the second contact piece.
- An advantage of a dead center in the contact portion is that the speed of the second contact can be kept low at least temporarily before the contact separation. Movement of the second high-speed contact piece may be limited in embodiments of the invention to a period in which such movement is advantageous or necessary (usually only after contact separation). As a result, drive energy can be used efficiently or space can be saved. Also wear by friction can be reduced. This also applies accordingly to the reverse movement when closing the contact between the contact pieces.
- the invention also relates to an apparatus for carrying out the disclosed methods and also includes apparatus parts for carrying out individual method steps.
- the invention also relates to a transmission for installation in a circuit breaker such that the circuit breaker has the characteristics described above or in the claims.
- Fig. 1 shows a transmission 2 of a circuit breaker according to the invention in a perspective view.
- the circuit breaker is typically a gas blast switch, such as used in high voltage networks. It typically includes at least some common components of such a switch, such as a shroud-filled housing, a pair of contacts, and particularly consumable contacts, and optionally a pair of rated current contacts.
- One of the burn-off contacts is usually designed as a tulip, the other as a pen.
- the burn-off contacts are displaced against each other along a switching axis.
- the switching axis 3 is a central axis 3, around which the AbbrandWallete 12, 22 are arranged coaxially.
- a first contact piece 10 with a first Abbrand token 12 which is typically the tulip, are driven by a drive.
- the movement of the first contact piece 10 is transmitted through a transmission 2 to the second contact piece 20.
- a part of the first contact piece 10 is shown, which comprises a first sliding element 14.
- the first sliding element 14 is movable by a rail 16 along the switching axis 3 and by a coupling 15 to the remaining first contact piece 10 with the first Abbrandcard (not shown) coupled.
- the second contact piece 20 also comprises a second sliding element 24, a rail 26, and a coupling 25.
- the transmission 2 is in Fig. 1 shown in a state of motion corresponding to a closed circuit breaker, ie, in which the first AbbrandWallet 12 and the second AbbrandWallet 22 are in contact with each other.
- contact is meant a mechanical or direct electrical contact, ie the AbbrandWallete 12, 22 are not in contact with each other, if only about an arc between them burns.
- the first contact piece 10 in maximum deflection along the switching axis 3 to the right.
- the first contact piece 10 is movable in a first movement region along the rail 16, which movement region extends from the illustrated position of the first contact piece 10 along the indexing axis 3 to the left.
- a stop limits further movement of the first contact piece 10 to the right.
- Another stop limits the movement of the first contact piece 10 optionally outside the first range of movement to the left.
- the second switching piece 20 is movable along the rail 26 in a second range of motion. As in Fig. 2b is described in more detail, the second range of movement extends from the in Fig. 1 shown position of the second contact piece 20 from along the switching axis 3 both to the right and by a small amount to the left.
- the transmission 2 further comprises a drive rod 30, an output rod 40, and a lever 50.
- the lever 50 is fixedly mounted with a lever joint 55 relative to the housing of the circuit breaker and pivotable about a lever axis 56.
- the lever 50 has a drive lever arm 53 and a driven lever arm 54.
- the term “drive” and “output” refers to parts of the transmission 2, the drive side or output side of each other or from the lever joint 55 and the lever axis 56 are arranged.
- the drive rod 30 is pivotally connected to a rotary joint 31 to the first contact piece 10 and articulated with another hinge 35 to the drive lever arm 50.
- the output rod is correspondingly pivotally connected to the second contact piece 20 and to the output lever arm 54 with swivel joints 42, 45.
- the lever 50 is preferably a two-armed or two-sided lever, ie the lever arms 53 and 54 lie with respect to the lever axis 56 on different, in particular opposite, sides. Regardless of the embodiment shown typically an angle of more than 90 ° between the drive lever arm 53 and the output lever arm 54, ie between the pivot joints 35, 55 (or the axis 56) and 55, 45. As in the illustration of the lever 50 in FIG Fig. 2a can be seen, the lever arms 53 and 54 are typically diffracted, that is different from 180 °, so that the joints 35 and 45 are usually not with the lever axis 56 on a common line.
- the hinges 31, 35, 42 and 45 typically have only one degree of freedom for rotation about an axis of rotation. They typically have no further degree of freedom, e.g. for a pushing movement.
- the lever axis 56 relative to the central axis 3, by which the Abbrand tokene 12, 22 are arranged coaxially offset.
- the output stroke i. the range of movement of the second contact piece 20 can be increased.
- Output stroke of the drive stroke can be reduced.
- the construction can be made compact.
- Fig. 1 shown transmission can be changed in various ways.
- the rods or connecting levers 30, 40, the lever 50 and the Carriage 10, 20 arbitrarily remodeled and / or replaced by parts with similar function.
- the rails 16, 26 are also replaced by other guides, eg through holes; and the two-armed lever 50 can be replaced by a one-armed lever.
- Fig. 2a to Fig. 2f show in a schematic side view states of motion when contact opening the in Fig. 1 shown circuit breaker 1. This is about the in Fig. 1 shown elements, a housing 7 indicated.
- the first Abbrandness 12 as tulip 12 and the second Abbrandcard 22 are shown schematically as pin 22.
- Fig. 2a shows the transmission 2 in the state of motion of Fig. 1 which corresponds to a closed circuit breaker 1.
- the first contact piece 10 is shown at the right edge of the first movement range
- the second contact piece 20 is shown near the left edge of the second movement range.
- the output rod 40 and the output lever arm 54 do not form a straight angle, but come close, z. B. to less than 10 °.
- Fig. 2b shows the transmission 2, after the first contact piece 10 has been moved by the drive by a small distance to the left.
- the lever 50 has been rotated by means of the drive rod 30 counterclockwise so that the output lever arm 54 and the output rod 40 now form an extended angle, ie a 180 ° angle.
- the second switching piece 20 is moved or pushed to a maximum deflection position to the left, ie to the left edge of the second movement range.
- Fig. 2c is the first contact piece 10 further moved to the left, and the lever 50 is thereby further rotated counterclockwise.
- the output lever arm 54 and the output rod 40 are now over the extended angle of Fig. 2b also slightly bent. Due to the diffracted angle, the second contact piece 20 is again moved or pushed away from the maximum deflection position to the right.
- the in Fig. 2b shown movement state is a dead position of the transmission 2, more precisely a dead position of the output rod 40, or in other words a reversal point of the transmission 2 and for the movement of the output rod 40.
- the dead position is an outer dead center between the output rod 40 and the output lever arm 54th
- Fig. 2c form the drive rod 30 and the switching axis 3 (or central axis 3 of the concentric Abbrandcarde 12, 22) a right angle.
- the vertical deflection of the pivot 35 is maximum, as in Fig. 2c shown maximum upwards.
- the lever 50 at the transition of Fig. 2c to Fig. 2d therefore turned clockwise.
- Fig. 2c when passing through the maximum vertical deflection of the Drehgelenkts 35 is a reversal point for the movement of the lever 50 about the lever axis 56. Also Fig. 2c Therefore, shows a dead center of the transmission 2.
- the dead center of Fig. 2c is a dead center other than the dead center of Fig. 2b ,
- the deadlock of Fig. 2c is firstly a dead center of another gear part as the dead center of Fig. 2b ; and secondly, it is not an outer dead center, but by the right angle between the drive rod 30 and the switching axis 3 and the along the
- the time offset between the passage of in Fig. 2b and 2c shown dead spots can be adjusted by the angle between the drive lever arm 53 and the output lever arm 54. Therefore, regardless of the embodiment shown, it is proposed that the drive lever arm 53 and the output lever arm 54 are bent. Irrespective of this, the bent angle is preferably selected so that, during the movement of the first contact piece 10 in the first movement range, the dead position 62c and optionally the dead positions 62b and / or 62d (FIG. Fig. 3b ) are separated in time. Preferably, a movement of the second contact piece 20 takes place between in each case two different dead spots.
- the deadlines of Fig. 2b and Fig. 2d are independent of the embodiment shown typically dead spots of the output-side part of the transmission 2, that is, dead spots of one On the output side of the lever axis 56 located gear part, such as the pivot 45, which is articulated to the output lever arm 54.
- the deadlines of Fig. 2b and Fig. 2d are typically dead spots of the same kind, eg internal or external dead centers of the same gear parts. They are advantageously outer dead spots, ie dead spots, which are characterized by a substantially 180 ° angle between eg lever 50 and output rod 40.
- the dead center of Fig. 2c and the deadlock of Fig. 2b or Fig. 2d typically dead spots of various types, in particular different parts of the transmission 2, for example, the drive-side part 10, 30, 35, 53 and the driven side part 54, 45, 40, 20 of the transmission 2.
- These parts of the transmission, the respective hinges 35, 45 may be which are provided at the drive end or drive lever arm 53 and at the output end or output lever arm 54 of the lever 50 as articulation points for the connecting rods, -pleuel or levers 30, 40.
- Fig. 3a to Fig. 3d show lifting, speed and acceleration diagrams of the first contact piece 10 and the second contact piece 20 during the in Fig. 2a to 2f
- the horizontal axis represents the deflection of the first contact piece 10 along its movement range along the switching axis 3. Therefore, the lift curve 61 of the first Contact piece 10 by definition a straight line.
- the left or right edge of the horizontal axis corresponds to the edge of the movement range of the first contact piece 10 when the switch 1 is closed or when the switch 1 is open.
- the horizontal axis may also be in accordance with the inscription in FIG Fig. 3a to 3d be considered as a timeline. Specifically, this approximation is valid only after the end of a short initial drive acceleration phase during which the first contact is accelerated to the substantially constant speed. As the end of the drive or the output acceleration phase, the point can be set, from which the corresponding contact piece is accelerated to about 50% of its maximum speed. From this point, a movement phase of the corresponding contact piece, which is preferably characterized by a substantially, that is, to a tolerance of up to 50%, constant speed begins.
- the points 62a to 62f respectively correspond to those in FIGS FIGS. 2a to 2f illustrated states of the transmission.
- the lift curve 62 of Fig. 3a shows that the deflection of the second contact piece 20 in an initial phase is almost constant (part of the lift curve 62a-d), and that the second contact piece 20 is thus initially almost stationary. Only after this initial phase, which can be referred to as pre-acceleration phase, the second contact piece 20 is visibly accelerated.
- Fig. 3b the stroke of the second contact piece 20 is shown in fragmentary form on a greatly enlarged scale.
- the movement is characterized by three changes of direction 62b, 62c and 62d, which are defined by the in Fig. 2b . 2c and 2d each shown dead spots (reversal points) are caused.
- the point 62d may be considered at which the third or last dead position is passed, during which the power switch 1 is still closed.
- the acceleration phase of the first contact piece 10 can be separated in time from the acceleration phase of the second contact piece 20. This is possible if the acceleration phase of the second contact piece 20 begins only after the end of the acceleration phase of the first contact piece 10. This can prevent the drive for the first contact piece 10 from having to accelerate two contact pieces 10, 20 simultaneously, and the acceleration energy of the drive can be used more advantageously. At the same time when closing the switch 1, ie in the reverse movement, the relative movement of the contact pieces 10, 20 are braked gently, which can reduce the material wear of the contact pieces 10, 20.
- the acceleration can be increased. Also, due to the smaller deflection of the second contact piece 20 during the pre-acceleration phase, the range of movement of the second contact piece 20 necessary for switching is reduced, as a result of which a more compact design of the switch can be realized.
- the Abbrandcarde 12, 22 are separated only during or even after the end of the acceleration phase of the second contact piece 20. As a result, it can be ensured that the relative speed of the contact pieces 10, 20 during disconnection of the electrical contact is high. As a result, an arcing occurring during separation is rapidly drawn and can thus be more easily deleted.
- Fig. 3c are the speed curves 63 of the first contact piece 10 and 64 of the second contact piece 20, that is, the first derivatives of the lift curves 61 and 62 of Fig. 3a represented.
- Fig. 3d is the acceleration curve 66 of the second contact piece 20, that is, the second derivative of the lift curve 62 of Fig. 3a represented.
- the end position of the switch 1 for contact-closed switching state 62a can be varied without departing from the invention.
- the end position may be selected as any point that lies before the last reversal point 62d. It is preferred that in the end position of the switch 1 for closed switching state, a transmission state is present, which is closer to the dead center 62b than to the dead center 62c. Near here is according to the distance on the horizontal axis of the stroke diagram eg from Fig. 3b defined, ie according to the spatial length of an actual or imaginary movement of the first contact piece 10 along the switching axis. 3
- the movement transferable by the transmission 2 typically includes movement to contact the switch 1.
- the transmission 2 is typically designed so that during the movement to disconnect the switch 1, the dead center 62d after the dead center 62c is passed through and / or that the dead center 62c is passed after the dead center 62b.
- the Abbrandcarde 12, 22 may be arranged and the transmission 2 may be designed so that during the movement to contact opening of the switch 1, the Abbrand tokene 12, 22 are separated only after the dead center 62c has been traversed, and after possibly the dead center 62d and / or possibly the dead center 62d has been passed through.
- Fig. 4a to Fig. 4f show states of motion when contact opening a further inventive circuit breaker.
- like reference numerals refer to like or functionally similar parts as in the preceding figures.
- the geometry and the arrangement of the in the Fig. 4a to Fig. 4f shown gear parts differs slightly from that in the Fig. 2a to Fig. 2f illustrated geometry and arrangement. Nevertheless, the description of the FIGS. 2a to 2f here essentially analog.
- Fig. 5a and Fig. 5b show the lift diagram for the output side (analogous to Fig. 3a and Fig. 3b ) and Fig. 5c the speed diagram for the output side (analogous to Fig. 3c ) when contacting the in Fig. 4a to 4f shown circuit breaker.
- 64e designates an acceleration phase and 64f the final velocity of the second contact piece 20. The description of the latter also applies to these figures FIGS. 3a to 3c here essentially corresponding.
- the first drive-side contact piece 10 is advantageously connected to the (not shown) insulating nozzle of the circuit breaker 1 and is driven by this.
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Circuit Breakers (AREA)
- Breakers (AREA)
- Electromechanical Clocks (AREA)
Abstract
Description
Die vorliegende Erfindung bezieht sich im allgemeinen auf elektrische Leistungsschalter, insbesondere auf elektrische Leistungsschalter mit Doppelantrieb. Die Erfindung bezieht sich auch auf Verfahren zum Kontakttrennen in einem elektrischen Leistungsschalter.The present invention relates generally to electrical circuit breakers, and more particularly to dual power electrical circuit breakers. The invention also relates to methods of contact separation in an electrical circuit breaker.
Schalter, in denen ein Abbrandkontakt, etwa eine Löschtulpe, zum Trennen einer elektrischen Verbindung von einem weiteren Abbrandkontakt, etwa einem Stift, wegbewegt wird, sind im Stand der Technik bekannt. Auch sind Schalter bekannt, in denen zwei Abbrandkontakte in entgegengesetzter Richtung bewegt werden.Switches in which a consumable contact, such as a quenching tulip, for separating an electrical connection from a further consumable contact, such as a pen, is moved away are known in the art. Switches are also known in which two burn-off contacts are moved in the opposite direction.
Beispielsweise ist in der
In dem U. S. Pat. No.
In der Erfindung wird Bezug genommen auf die
In der
Die bekannten Schalter aus dem Stand der Technik bewirken jedoch eine Bewegung der Kontakte, die in verschiedener Hinsicht nicht ideal aufeinander abgestimmt ist. Zudem sind Getriebe dieser Schalter teilweise nur mit erheblichem Raumbedarf realisierbar, was besonders bei Druckgasschaltem ungünstig ist.The known switches of the prior art, however, cause a movement of the contacts, which is not ideally matched in various respects. In addition, transmission of these switches are sometimes only feasible with considerable space requirements, which is unfavorable especially at Druckgasschaltem.
Aufgabe der vorliegenden Erfindung ist es, einen verbesserten Doppelantrieb für einen Leistungsschalter anzugeben. Die Aufgabe wird gelöst durch den elektrischen Leistungsschalter gemäss dem unabhängigen Anspruch 1 und durch das Verfahren gemäss dem unabhängigen Anspruch 13. Weitere Vorteile, Merkmale, Aspekte und Details der Erfindung sowie bevorzugte Ausführungsformen der Erfindung ergeben sich aus den Unteransprüchen, der Beschreibung und den Figuren.Object of the present invention is to provide an improved dual drive for a circuit breaker. The object is achieved by the electric circuit breaker according to
Gemäss einem ersten Aspekt der Erfindung wird ein elektrischer Leistungsschalter mit spezieller Doppelbewegung der Kontakte zur Verfügung gestellt. Der Leistungsschalter umfasst ein erstes Schaltstück typischerweise mit einem ersten Abbrandkontakt, insbesondere einer Tulpe, und ein zweites Schaltstück typischerweise mit einem zweiten Abbrandkontakt, insbesondere einem Stift. Der Leistungsschalter umfasst weiter einen Antrieb zum Bewegen des ersten Schaltstücks in einem ersten Bewegungsbereich längs einer Schaltachse, d.h. im wesentlichen parallel oder antiparallel zu der Schaltachse, insbesondere relativ zu einem Gehäuse, und ein Getriebe zum Übertragen der Bewegung des ersten Schaltstücks auf eine Bewegung des zweiten Schaltstücks. Der erste Bewegungsbereich umfasst einen Kontakt-Teilbereich und einen Trenn-Teilbereich. Die Abbrandkontakte s miteinander in Kontakt, d.h. ein mechanischer und elektrischer Kontakt ist vorgesehen, wenn sich das erste Schaltstück in dem Kontakt-Teilbereich befindet, und sie sind mechanisch voneinander getrennt, d.h. dies ist vorgesehen, wenn sich das erste Schaltstück in dem Trenn-Teilbereich befindet. Das Getriebe hat eine erste Totlage, die bei der insbesondere in einer Richtung längs der Schaltachse gerichteten Bewegung des ersten Schaltstücks in dem Kontakt-Teilbereich durchlaufen wird. Insbesondere sind die Getriebeteile so dimensioniert und angeordnet, dass die erste Totlage durchlaufen wird.According to a first aspect of the invention, an electrical circuit breaker with special double movement of the contacts is provided. The circuit breaker typically comprises a first contact piece with a first burnup contact, in particular a tulip, and a second contact piece typically with a second burnup contact, in particular a pin. The circuit breaker further comprises a drive for moving the first contact piece in a first movement range along a switching axis, ie substantially parallel or anti-parallel to the switching axis, in particular relative to a housing, and a transmission for transmitting the movement of the first contact piece to a movement of the second contact piece. The first range of motion includes a contact portion and a separation portion. The Abbrandkontakte s in contact, ie a mechanical and electrical contact is provided when the first contact piece is in the contact portion, and they are mechanically separated from each other, ie, this is provided when the first contact piece in the separation portion located. The gear has a first dead position, which is traversed in the directed in particular in one direction along the shift axis movement of the first contact piece in the contact portion. In particular, the gear parts are dimensioned and arranged so that the first dead center is traversed.
Eine Totlage liegt vor, wenn bei Bewegung des ersten Schaltstücks im wesentlichen keine Bewegung des zweiten Schaltstücks erfolgt. Eine Totlage liegt bereits vor, wenn dies für (infinitesimal) kleine Bewegungen des ersten Schaltstücks um eine Position in dem ersten Bewegungsbereich, d.h. in linearer Näherung, erfüllt ist. Somit liegt eine Totlage vor, wenn die erste Ableitung einer Hubkurve, wie sie z.B. in
Die erste Totlage ist in Ausführungsformen ein Umkehrpunkt für die Schwenkbewegung eines vorzugsweise zweiarmigen Hebels um seine Hebelachse. Die erste Totlage ist in Ausführungsformen auch durch einen im wesentlichen rechten Winkel zwischen einer Antriebsstange und der Schaltachse gekennzeichnet.The first dead center is in embodiments a reversal point for the pivotal movement of a preferably two-armed lever about its lever axis. The first dead center is also characterized in embodiments by a substantially right angle between a drive rod and the shift axis.
Gemäss einem weiteren Aspekt der Erfindung wird ein Verfahren zum Kontaktöffnen eines elektrischen Leistungsschalters, d.h. insbesondere zum Trennen seiner Abbrandkontakte, zur Verfügung gestellt. Der Leistungsschalter umfasst ein erstes Schaltstück mit einem ersten Kontakt, insbesondere Abbrandkontakt, ein zweites Schaltstück mit einem zweiten Kontakt, insbesondere Abbrandkontakt, und ein Getriebe. Das Verfahren weist folgende Schritte auf: das erste Schaltstück wird in einer Trennrichtung längs einer Schaltachse bewegt; das Getriebe überträgt die Bewegung des ersten Schaltstücks auf eine insbesondere ihr zugeordnete Bewegung des zweiten Schaltstücks längs der Schaltachse; und der erste Kontakt und der zweite Kontakt werden durch die Bewegung der Schaltstücke voneinander getrennt. Die insbesondere zugeordnete Bewegung des zweiten Schaltstücks wechselt vor dem Trennen der Kontakte mindestens einmal, in Ausführungsformen sogar mindestens zweimal oder dreimal, die Richtung, insbesondere indem eine erste Totlage des Getriebes durchlaufen wird.According to a further aspect of the invention, a method for opening a contact of an electrical circuit breaker, ie in particular for separating its Abbrandkontakte provided. The circuit breaker comprises a first contact piece with a first contact, in particular Abbrandkontakt, a second contact piece with a second contact, in particular Abbrandkontakt, and a transmission. The method comprises the following steps: the first contact piece is moved in a separating direction along a switching axis; the transmission transmits the movement of the first contact piece to a particular associated therewith movement of the second contact piece along the shift axis; and the first contact and the second contact are separated by the movement of the contact pieces. The particular assigned movement of the second switching piece changes before disconnecting the contacts at least once, in embodiments even at least twice or three times, the direction, in particular by a first dead center of the transmission is passed through.
Die Bewegung des ersten Schaltstücks umfasst in Ausführungsformen eine Beschleunigungsphase und daran anschliessend eine Bewegungsphase, vorzugsweise mit im wesentlichen konstanter Geschwindigkeit, und die Bewegung des zweiten Schaltstücks umfasst eine Vor- Beschleunigungsphase, die andauert, bis der mindestens eine oder zwei oder drei Richtungswechsel vollzogen ist oder sind, daran anschliessend eine Beschleunigungsphase, die durch eine Geschwindigkeit des zweiten Schaltstücks bis ca. 50% seiner maximalen Geschwindigkeit gekennzeichnet ist, und daran anschliessend eine Bewegungsphase. Die Beschleunigungsphase des zweiten Schaltstücks beginnt in der Regel erst nach dem Ende einer analog definierten Beschleunigungsphase des ersten Schaltstücks. Die Abbrandkontakte werden in Ausführungsformen erst nach dem Ende der Beschleunigungsphase des zweiten Schaltstücks getrennt.The movement of the first contact piece comprises in embodiments an acceleration phase and then a movement phase, preferably at a substantially constant speed, and the movement of the second contact piece comprises a pre-acceleration phase which lasts until at least one or two or three changes of direction are completed or are then followed by an acceleration phase, which is characterized by a speed of the second contact piece to about 50% of its maximum speed, and then a movement phase. The acceleration phase of the second contact piece usually begins after the end of an analogously defined acceleration phase of the first contact piece. The burn-off contacts are separated in embodiments only after the end of the acceleration phase of the second contact piece.
Ein Vorteil einer Totlage in dem Kontakt-Teilbereich ist, dass die Geschwindigkeit des zweiten Schaltstücks vor der Kontakttrennung zumindest zeitweise niedrig gehalten werden kann. Eine Bewegung des zweiten Schaltstücks mit hoher Geschwindigkeit kann in Ausführungsformen der Erfindung auf einen Zeitraum beschränkt werden, in dem eine solche Bewegung vorteilhaft oder notwendig ist (in der Regel erst nach der Kontakttrennung). Dadurch kann Antriebsenergie effizient genutzt bzw. Bauraum gespart werden. Auch kann Verschleiss durch Reibung reduziert werden. Dies gilt entsprechend auch für die umgekehrte Bewegung beim Schliessen des Kontakts zwischen den Schaltstücken.An advantage of a dead center in the contact portion is that the speed of the second contact can be kept low at least temporarily before the contact separation. Movement of the second high-speed contact piece may be limited in embodiments of the invention to a period in which such movement is advantageous or necessary (usually only after contact separation). As a result, drive energy can be used efficiently or space can be saved. Also wear by friction can be reduced. This also applies accordingly to the reverse movement when closing the contact between the contact pieces.
Die Erfindung bezieht sich auch auf eine Vorrichtung zum Ausführen der offenbarten Verfahren und umfasst auch Vorrichtungsteile zum Ausführen jeweils einzelner Verfahrensschritte. Beispielsweise bezieht sich die Erfindung auch auf ein Getriebe zum Einbau bzw. zur Verwendung in einen Leistungsschalter, so dass der Leistungsschalter die oben oder in den Ansprüchen beschriebenen Eigenschaften aufweist.The invention also relates to an apparatus for carrying out the disclosed methods and also includes apparatus parts for carrying out individual method steps. For example, the invention also relates to a transmission for installation in a circuit breaker such that the circuit breaker has the characteristics described above or in the claims.
Ausführungsbeispiele der Erfindung sind in den Figuren dargestellt und werden im folgenden näher beschrieben. Es zeigen:
- Fig. 1
- einen Teil eines erfindungsgemässen Leistungsschalters in perspektivischer Ansicht;
- Fig. 2a-2f
- Bewegungszustände beim Kontaktöffnen eines erfindungsgemässen Leistungsschalters;
- Fig. 3a-3d
- Hub-, Geschwindigkeits- und Beschleunigungsdiagramme beim Kontaktöffnen des in
Fig. 2a-2f dargestellten Leistungsschalters; - Fig. 4a-4f
- Bewegungszustände beim Kontaktöffnen eines weiteren erfindungsgemässen Leistungsschalters; und
- Fig. 5a-5c
- Hub- und Geschwindigkeitsdiagramme beim Kontaktöffnen des in
Fig. 4a-4f dargestellten Leistungsschalters.
- Fig. 1
- a part of a circuit breaker according to the invention in a perspective view;
- Fig. 2a-2f
- Movement states during contact opening of a circuit breaker according to the invention;
- Fig. 3a-3d
- Lift, speed and acceleration diagrams when opening contact in
Fig. 2a-2f illustrated circuit breaker; - Fig. 4a-4f
- Movement states when contact opening a further inventive circuit breaker; and
- Fig. 5a-5c
- Lift and speed diagrams when opening contact in
Fig. 4a-4f shown circuit breaker.
Zum Trennen eines elektrischen Kontakts können Tulpe und Stift längs der Schaltachse 3 auseinanderbewegt werden. Hierfür kann ein erstes Schaltstück 10 mit einem ersten Abbrandkontakt 12, der typischerweise die Tulpe ist, durch einen Antrieb angetrieben werden. Um das zweite Schaltstück 20 mit dem zweiten Abbrandkontakt 22, typischerweise dem Stift, anzutreiben, wird die Bewegung des ersten Schaltstücks 10 durch ein Getriebe 2 auf das zweite Schaltstück 20 übertragen.To separate an electrical contact tulip and pin can be moved apart along the switching
In
Das Getriebe 2 ist in
Auch das zweite Schaltstück 20 ist entlang der Schiene 26 in einem zweiten Bewegungsbereich bewegbar. Wie bei
Das Getriebe 2 umfasst weiter eine Antriebsstange 30, eine Abtriebsstange 40, und einen Hebel 50. Der Hebel 50 ist mit einem Hebelgelenk 55 ortsfest relativ zum Gehäuse des Leistungsschalters gelagert und um eine Hebelachse 56 schwenkbar. Der Hebel 50 weist einen Antriebs-Hebelarm 53 und einen Abtriebs-Hebelarm 54 auf. Die Bezeichnung "Antriebs-" und "Abtriebs-" bezieht sich auf Teile des Getriebes 2, die antriebsseitig bzw. abtriebsseitig voneinander oder von dem Hebelgelenk 55 bzw. der Hebelachse 56 angeordnet sind. Die Antriebsstange 30 ist mit einem Drehgelenk 31 drehbar an das erste Schaltstück 10 und mit einem weiteren Drehgelenk 35 an den Antriebs-Hebelarm 50 angelenkt. Die Abtriebsstange ist entsprechend mit Drehgelenken 42, 45 drehbar an das zweite Schaltstück 20 und an den Abtriebs-Hebelarm 54 angelenkt.The
Der Hebel 50 ist vorzugsweise ein zweiarmiger oder zweiseitiger Hebel, d.h. die Hebelarme 53 und 54 liegen bezüglich der Hebelachse 56 auf unterschiedlichen, insbesondere einander gegenüberliegenden, Seiten. Unabhängig von der gezeigten Ausführungsform besteht typischerweise ein Winkel von mehr als 90° zwischen dem Antriebs-Hebelarm 53 und dem Abtriebs-Hebelarm 54, d.h. zwischen den Drehgelenken 35, 55 (oder der Achse 56) und 55, 45. Wie in der Darstellung des Hebels 50 in
Die Drehgelenke 31, 35, 42 und 45 haben typischerweise nur einen Freiheitsgrad für eine Drehung um eine Drehachse. Sie haben typischerweise keinen weiteren Freiheitsgrad z.B. für eine Schubbewegung.The hinges 31, 35, 42 and 45 typically have only one degree of freedom for rotation about an axis of rotation. They typically have no further degree of freedom, e.g. for a pushing movement.
Das Getriebe 2 ist unabhängig von der gezeigten Ausführungsform mit Vorteil asymmetrisch gestaltet. Insbesondere ist typischerweise mindestens eine der folgenden Bedingungen erfüllt:
53, 54 sind unterschiedlich lang;Die Hebelarme Der Abbrandkontakt 12 des ersten Schaltstücks 10 und der Abbrandkontakt 22 des zweiten Schaltstücks 20 sind koaxial um dieSchaltachse 3 angeordnet, und dieHebelachse 56 ist radial versetzt zur Schaltachse 3 angeordnet; oder- Der radiale Abstand (d.h. der Abstand senkrecht zur Schaltachse 3) zwischen der Hebelachse 56
und dem Drehgelenk 31, mit dem die Antriebsstange 30 an das erste Schaltstück 10 angelenkt ist, und der radiale Abstand zwischen der Hebelachse 56und dem Drehgelenk 42, mit dem die Abtriebsstange 40 andas zweite Schaltstück 20 angelenkt ist, sind ungleich gewählt. - Weitere Bedingungen sind nach der Beschreibung von
Fig. 3 genannt.
- The
53, 54 are different lengths;lever arms - The
Abbrandkontakt 12 of thefirst contact piece 10 and theAbbrandkontakt 22 of thesecond contact piece 20 are arranged coaxially about the switchingaxis 3, and thelever axis 56 is radially offset from the switchingaxis 3; or - The radial distance (ie the distance perpendicular to the switching axis 3) between the
lever axis 56 and the rotary joint 31, with which thedrive rod 30 is articulated to thefirst contact piece 10, and the radial distance between thelever axis 56 and the swivel joint 42, with theOutput rod 40 is hinged to thesecond contact piece 20 are chosen unequal. - Other conditions are as described by
Fig. 3 called.
In der Regel ist die Hebelachse 56 gegenüber der Mittelachse 3, um die die Abbrandkontakte 12, 22 koaxial angeordnet sind, versetzt. Dadurch kann bei einem vorgegebenen Antriebshub, d.h. dem Bewegungsbereich des ersten Schaltstücks 10, der Abtriebshub, d.h. der Bewegungsbereich des zweiten Schaltstücks 20, vergrössert werden. Umgekehrt kann durch den Versatz zwischen der Hebelachse 56 und der Mittelachse 3 bei vorgegebenemIn general, the
Abtriebshub der Antriebshub reduziert werden. Dadurch kann die Bauweise kompakt gestaltet werden.Output stroke of the drive stroke can be reduced. As a result, the construction can be made compact.
Das in
In
Somit stellt der in
In
Schaltachse 3 bewegten Schaltstück 10 bedingt.
Der Zeitversatz zwischen dem Durchlauf der in
Die Drehung des Hebels 50 im Uhrzeigersinn, die von
Die Totlagen von
Unabhängig von der gezeigten Ausführungsform sind die Totlage von
In
In
Wenn die Bewegung des ersten Schaltstücks 10 als Bewegung mit konstanter Geschwindigkeit angenähert wird, kann die horizontale Achse auch gemäss der Beschriftung in
Auf der Hubkurve 62 von
In
Durch die Vor-Beschleunigungsphase des zweiten Schaltstücks 20 kann die Beschleunigungsphase des ersten Schaltstücks 10 von der Beschleunigungsphase des zweiten Schaltstücks 20 zeitlich getrennt werden. Dies ist möglich, wenn die Beschleunigungsphase des zweiten Schaltstücks 20 erst nach dem Ende der Beschleunigungsphase des ersten Schaltstücks 10 beginnt. Dadurch kann vermieden werden, dass der Antrieb für das erste Schaltstück 10 zwei Schaltstücke 10, 20 gleichzeitig stark beschleunigen muss, und die Beschleunigungsenergie des Antriebs kann vorteilhafter genutzt werden. Gleichzeitig kann beim Schliessen des Schalters 1, also bei der umgekehrten Bewegung, die Relativbewegung der Schaltstücke 10, 20 sanfter abgebremst werden, was den Materialverschleiss der Schaltstücke 10, 20 verringern kann.Due to the pre-acceleration phase of the
Auch kann durch die Verkürzung der Beschleunigungsphase die Beschleunigung erhöht werden. Auch wird durch die geringere Auslenkung des zweiten Schaltstücks 20 während der Vor-Beschleunigungsphase der zum Schalten notwendige Bewegungsbereich des zweiten Schaltstücks 20 verringert, wodurch eine kompaktere Bauweise des Schalters realisierbar ist.Also, by shortening the acceleration phase, the acceleration can be increased. Also, due to the smaller deflection of the
Wie in
In
Die Endposition des Schalters 1 für kontaktgeschlossenen Schaltzustand 62a (siehe
Unabhängig von der gezeigten Ausführungsform umfasst die Bewegung, die durch das Getriebe 2 übertragbar ist, typischerweise eine Bewegung zum Kontaktöffnen des Schalters 1. Das Getriebe 2 ist typischerweise so gestaltet, dass bei der Bewegung zum Trennen des Schalters 1 die Totlage 62d nach der Totlage 62c durchlaufen wird und/oder dass die Totlage 62c nach der Totlage 62b durchlaufen wird. Die Abbrandkontakte 12, 22 können so angeordnet sein und das Getriebe 2 kann so gestaltet sein, dass bei der Bewegung zum Kontaktöffnen des Schalters 1 die Abbrandkontakte 12, 22 erst getrennt werden, nachdem die Totlage 62c durchlaufen worden ist, und nachdem gegebenenfalls die Totlage 62d und/oder gegebenenfalls die Totlage 62d durchlaufen worden ist.Regardless of the illustrated embodiment, the movement transferable by the
Die typischerweise asymmetrische Gestaltung des Getriebes kann durch eine oder mehrere der folgenden weiteren Bedingungen für Asymmetrie charakterisiert sein, die jeweils einzeln und unabhängig von den gezeigten Ausführungsformen erfüllt sein können:
- das Getriebe stellt an- und abtriebsseitige Totlagen zur Verfügung, die getrennt voneinander sind. Insbesondere ist das Getriebe so gestaltet, dass es bei einem Bewegungszustand des ersten Schaltstücks in dem ersten Bewegungsbereich die Abtriebsstange bzw. ein Drehgelenk der Abtriebsstange eine Totlage durchläuft, während die Antriebsstange bzw. ein Drehgelenk der Antriebsstange keine Totlage durchläuft; oder dass die Antriebsstange bzw. ein Drehgelenk der Antriebsstange eine Totlage durchläuft, während die Abtriebsstange bzw. ein Drehgelenk der Abtriebsstange keine Totlage durchläuft.
- das Getriebe ist so gestaltet, dass bei der Bewegung des ersten Schaltstücks in dem ersten Bewegungsbereich die Abtriebsstange bzw. ein Drehgelenk der Abtriebsstange eine Totlage von einer anderen Art als die Antriebsstange bzw. ein Drehgelenk der Antriebsstange durchläuft; oder dass die Antriebsstange bzw. ein Drehgelenk der Antriebsstange eine Totlage von einer anderen Art als die Abtriebsstange bzw. ein Drehgelenk der Abtriebsstange durchläuft; oder
- Das Übersetzungsverhältnis des Getriebes ist nichtlinear.
- the gearbox provides input and output dead spots, which are separate from each other. In particular, the transmission is designed so that in a movement state of the first contact piece in the first movement range, the output rod or a swivel of the output rod passes through a dead center, while the drive rod or a rotary joint of the drive rod does not pass through dead center; or that the drive rod or a rotary joint of the drive rod passes through a dead center, while the output rod or a rotary joint of the output rod does not pass through dead center.
- the transmission is designed so that during the movement of the first contact piece in the first range of motion, the output rod or a swivel of the output rod undergoes a dead center of a different type than the drive rod or a rotary joint of the drive rod; or that the drive rod or a rotary joint of the drive rod passes through a dead center of a different type than the output rod or a rotary joint of the output rod; or
- The gear ratio of the gearbox is non-linear.
Das erste antriebsseitige Schaltstück 10 ist mit Vorteil mit der (nicht dargestellten) Isolierstoffdüse des Leistungsschalters 1 verbunden und wird durch diese angetrieben.The first drive-
- 11
- Leistungsschalterbreakers
- 22
- Getriebetransmission
- 33
- Mittelachse, SchaltachseCenter axis, indexing axis
- 77
- Gehäusecasing
- 1010
- erstes Schaltstückfirst contact piece
- 1212
- erster Abbrandkontakt / Tulpefirst burning contact / tulip
- 1414
- erstes Schiebeelementfirst sliding element
- 1515
- Kupplungclutch
- 1616
- Schienerail
- 2020
- zweites Schaltstücksecond contact piece
- 2222
- zweiter Abbrandkontakt / Stiftsecond burnup contact / pin
- 2424
- zweites Schiebeelementsecond sliding element
- 2525
- Kupplungclutch
- 2626
- Schienerail
- 3030
- Antriebsstange, AntriebspleuelDrive rod, drive connecting rod
- 3131
- Drehgelenk 30-10Swivel 30-10
- 3535
- Drehgelenk 30-50Swivel 30-50
- 4040
- Abtriebsstange, AbtriebspleuelOutput rod, output connecting rod
- 4242
- Drehgelenk 40-20Swivel 40-20
- 4545
- Drehgelenk 40-50Swivel 40-50
- 5050
- Zweiarmiger HebelTwo-armed lever
- 5353
- Antriebs-HebelarmDrive lever arm
- 5454
- Abtriebs-HebelarmOutput drive lever arm
- 5555
- Hebelgelenklever joint
- 5656
- Hebelachselever axis
- 6161
- Hubkurve erstes SchaltstückStroke curve first contact piece
- 6262
- Hubkurve zweites SchaltstückStroke curve second contact piece
- 62a-f62a-f
-
Punkte auf der Hubkurve, die den Zuständen in
Fig. 2a-2f entsprechenPoints on the lift curve that correspond to the states inFig. 2a-2f correspond - 6363
- Geschwindigkeitskurve erstes SchaltstückSpeed curve first contact piece
- 6464
- Geschwindigkeitskurve zweites SchaltstückSpeed curve second contact piece
- 64e64e
- Beschleunigungsphase zweites SchaltstückAcceleration phase second contact piece
- 64f64f
- Endgeschwindigkeit zweites SchaltstückFinal speed second contact piece
- 6666
- Beschleunigungskurve zweites SchaltstückAcceleration curve second contact piece
Claims (17)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06405511A EP1933348B1 (en) | 2006-12-11 | 2006-12-11 | High voltage circuit breaker with a gear with dead-center position |
ES06405511T ES2348921T3 (en) | 2006-12-11 | 2006-12-11 | POWER SWITCH WITH A TRANSMISSION DEVICE WITH DEAD POINT. |
DE502006007491T DE502006007491D1 (en) | 2006-12-11 | 2006-12-11 | Circuit breaker with gearbox with dead center |
AT06405511T ATE475193T1 (en) | 2006-12-11 | 2006-12-11 | CIRCUIT BREAKER WITH GEARBOX WITH DEAD POSITION |
US12/000,185 US8415578B2 (en) | 2006-12-11 | 2007-12-10 | Circuit breaker with a gear having a dead point |
JP2007318221A JP5274821B2 (en) | 2006-12-11 | 2007-12-10 | Circuit breaker with gear with dead center |
CN200710160953.4A CN101202175B (en) | 2006-12-11 | 2007-12-11 | Circuit breaker with a gear having a dead point |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06405511A EP1933348B1 (en) | 2006-12-11 | 2006-12-11 | High voltage circuit breaker with a gear with dead-center position |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1933348A1 true EP1933348A1 (en) | 2008-06-18 |
EP1933348B1 EP1933348B1 (en) | 2010-07-21 |
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Application Number | Title | Priority Date | Filing Date |
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EP06405511A Active EP1933348B1 (en) | 2006-12-11 | 2006-12-11 | High voltage circuit breaker with a gear with dead-center position |
Country Status (7)
Country | Link |
---|---|
US (1) | US8415578B2 (en) |
EP (1) | EP1933348B1 (en) |
JP (1) | JP5274821B2 (en) |
CN (1) | CN101202175B (en) |
AT (1) | ATE475193T1 (en) |
DE (1) | DE502006007491D1 (en) |
ES (1) | ES2348921T3 (en) |
Cited By (1)
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US9543081B2 (en) | 2013-01-24 | 2017-01-10 | Alstom Technology Ltd | Electrical apparatus with dual movement of contacts comprising a return device with two levers |
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CN101630585B (en) * | 2009-06-19 | 2011-09-21 | 西安交通大学 | Distributed winding flexible transformer by mixed winding of magnetic conductive wire and electrical wire |
WO2014121483A1 (en) * | 2013-02-07 | 2014-08-14 | 厦门华电开关有限公司 | Switch transmission mechanism and power switch |
DE102016214221B4 (en) * | 2016-08-02 | 2019-11-21 | Siemens Aktiengesellschaft | Gear housing of a circuit breaker |
KR20180087745A (en) * | 2017-01-25 | 2018-08-02 | 엘에스산전 주식회사 | Gas-insulated switch gear using dual motion with multi rever |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US9543081B2 (en) | 2013-01-24 | 2017-01-10 | Alstom Technology Ltd | Electrical apparatus with dual movement of contacts comprising a return device with two levers |
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Publication number | Publication date |
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US8415578B2 (en) | 2013-04-09 |
JP5274821B2 (en) | 2013-08-28 |
DE502006007491D1 (en) | 2010-09-02 |
CN101202175B (en) | 2013-01-02 |
CN101202175A (en) | 2008-06-18 |
ES2348921T3 (en) | 2010-12-17 |
US20080135526A1 (en) | 2008-06-12 |
EP1933348B1 (en) | 2010-07-21 |
JP2008147194A (en) | 2008-06-26 |
ATE475193T1 (en) | 2010-08-15 |
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