EP2551886A1 - Commutateur avec organe de commutation actionné par onde flexible - Google Patents

Commutateur avec organe de commutation actionné par onde flexible Download PDF

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Publication number
EP2551886A1
EP2551886A1 EP11175792A EP11175792A EP2551886A1 EP 2551886 A1 EP2551886 A1 EP 2551886A1 EP 11175792 A EP11175792 A EP 11175792A EP 11175792 A EP11175792 A EP 11175792A EP 2551886 A1 EP2551886 A1 EP 2551886A1
Authority
EP
European Patent Office
Prior art keywords
switching
switching device
flexible shaft
detection element
position detection
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
EP11175792A
Other languages
German (de)
English (en)
Other versions
EP2551886B1 (fr
Inventor
Klaus Keim
Michael Mann
Tobias Erford
Daniel Kuhl
David Saxl
Peter Klonecki
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.)
ABB Technology AG
Original Assignee
ABB Technology AG
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 ABB Technology AG filed Critical ABB Technology AG
Priority to EP11175792.8A priority Critical patent/EP2551886B1/fr
Priority to KR1020120082812A priority patent/KR101375383B1/ko
Priority to US13/560,677 priority patent/US8779310B2/en
Publication of EP2551886A1 publication Critical patent/EP2551886A1/fr
Application granted granted Critical
Publication of EP2551886B1 publication Critical patent/EP2551886B1/fr
Active 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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/38—Driving mechanisms, i.e. for transmitting driving force to the contacts using spring or other flexible shaft coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
    • 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
    • H01H33/46—Interlocking mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/56—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel

Definitions

  • the present invention relates to switching device with a movable switching element for opening and closing an electrical contact, wherein the switching member is driven by a flexible shaft, and a switchgear with such a switching device.
  • a typical electrical medium or high voltage switchgear usually comprises at least one circuit breaker for opening an electrical connection between two switch poles of an electrical phase during operation of the switchgear, and at least one switching device per electrical phase.
  • switching device is understood to mean earth switches, disconnectors or combined disconnecting earthing switches, in which opening an electrical connection by moving a switching element from a first position to another, second position between two switch poles of an electrical phase of the switching device normally not in nominal operation the switchgear is carried out.
  • switching devices required for moving the movable switching member drive means is arranged on the switch housing or even integrated therein.
  • the switching devices are firstly arranged locally sometimes far from each other and, secondly, in three-dimensional space relative to one another, possibly even differently oriented.
  • the operator no longer receives any information about the switching state, that is to say the switching position of the movable switching elements of the switches relative to the switching poles. This is typically not tolerated by the operator of a switchgear since the display of the switching position of electrical equipment is a safety-relevant criterion.
  • One way to improve the situation is that the switching member is moved from a location remote from the actual switch via a flexible shaft.
  • a switching device in which a movable switching element of a switching device via a flexible shaft with a shift lever is firmly connected, so that the switching member can be operated by a remote from the switching device operating area by lever.
  • Shift lever is fixedly connected to a rotatable input portion of the flexible shaft and the switching member with the output side to the one rotatable output portion, so that the movable switching member is convertible from a first position to a second position.
  • An advantage of a flexible shaft is that it allows a structurally simple overcoming of dimensional and positional tolerances between the input section and the output section, and also contributes to a great design freedom thanks to the different orientability or alignability of the input section and output section.
  • a disadvantage of the flexible shaft shows, for example, when leaving the first position of the switching element, when a greater force is required on the shift lever, as when the switching member is moved only between the first and the second position.
  • This higher force application results from an adhesion of contact elements, which are preferably arranged on the movable part of the nominal contact junction.
  • a rotational angle offset which can be generated by a first rotational angle of the flexible shaft at the output section and a second rotational angle at the input section, increases at the same time.
  • the required drive torque for the movable switching elements such switching devices, for example, at about 10 Nm.
  • a rotational angle offset between the input section and the output section when introducing a torque of a few Newtonmeters at the input section can be rapidly greater than 30 ° (degrees), for example 60 ° or even more at a length of the flexible shaft of approximately two meters. As the length of the flexible shaft increases, the rotational angle offset increases. This is accompanied by the uncertainty of whether the switching element is already in the desired switching state, or whether it is still in the one switching position at the previous switching state. This uncertainty is technically and safety not sustainable.
  • switching device will not be understood below as circuit breakers such as gas-insulated circuit breakers, generator switches and the like, but switches, which require a relatively low drive power.
  • the switching device has a movable from a first position to a second position switching element.
  • the switching device also includes a drive unit for generating a rotational movement and a flexible shaft for transmitting the rotational movement to the switching element.
  • the flexible shaft has a first length and is rotatably mounted. On the drive side, the flexible shaft has a rotatable input section and on the output side a rotatable output section, wherein the input section is connected to the drive unit generating the drive unit.
  • the difference between these two angles of rotation justifies a first rotation angle offset.
  • a third angle of rotation at the output portion can be generated.
  • This third rotation angle is smaller than the second rotation angle at the input section at the same time, so that a second rotation angle offset can be generated, which is greater than the first rotation angle offset.
  • the input section is connected via a mechanical first intermediate gear to a (preferably also mechanical) shift position detection element.
  • the first intermediate gear has a control means with one of the first position of the switching element corresponding, or associated with the first area.
  • This first region is coupled to the shift position detection element such that the first rotational angle offset and the second rotational angle offset result in an identical indication of the shift position detection element.
  • an identical display of the switching position detection element corresponds to a switching state, for example "disconnector closed” or "disconnector completely open”.
  • An identical display is important in both purely mechanical reading, as well as in an electrical reading or reading the switching state, because the information about the switching state of a switching device often serves as input for a switching logic, which, for example, prevents another switching device a specific switching process at all can perform.
  • the knowledge about the switching state of a switching device is not only important for trouble-free operation of a switchgear, but also, for example, for inspection or maintenance purposes certain switchgear parts safely and absolutely reliable can be switched off.
  • first position or “second position” is understood below to mean a mechanical position or a geometric location, in which the movable switching element can be moved.
  • Such a switching device can be used for example as a disconnector (disconnector) or earth switch (earthing switch).
  • switching elements are movable within certain limits, without changing the electrical switching position, that is, the electrical switching state, and accordingly the display.
  • a switching device is electrically in the closed position as soon as the movable switching member impinges on a mating contact, such as a fixed contact.
  • the actual position of the switching element still corresponds to the end position of the switching element in this switching position, because this is achieved only after a further movement of the switching element in the same direction at a later time.
  • a switching element formed, for example, as a linearly movable pin contact presses the contact elements between the pin contact and the mating contact together. Although this compression requires when retracting a force to overcome one of the contact elements (for example, lamellar contacts) generated counterforce, but does not change the electrical switching state.
  • the movable switching element in the same electrical switching state actually has several possible mechanical positions, for example between the first electrical contact and the achievement of the first intended end position.
  • the first intermediate gear it is possible to take the effect of the angular displacement, as well as deviations from different rotational angle offsets, such as occur as a result of flexible shafts of the same type but different lengths, as well as production-related tolerances of the auxiliary contacts, so that he does not deviate electrical Wegan Servicepositions sueden and so that an incorrect indication of the actual electrical switching state leads.
  • the mechanical first intermediate gear satisfies the requirement that the drive unit and the switching device does not include any electronic components, as they are usually used in regulations otherwise. Instead, the first intermediate gear in general and its control means in particular is configured so that the mechanically "soft", ie acting as a torsion spring flexible shaft largely reconstructs an image of the actual switching state on the driven side of the flexible shaft at the switching element, without Any readjustment to compensate for the torque offset of the flexible shaft is required.
  • the mechanical first intermediate gear meets the requirements of IEC 62271-102: 2003, by always a mechanical connection between the switching element and the shift position detection element is present.
  • the switching position detection element may be one or more parts and serve to control one or more auxiliary contacts.
  • a complete electromechanical, kinematic chain between switching element and auxiliary contact can be achieved.
  • the display is electric when needed via auxiliary contacts readable relationship meadowable determined when the shift position detection element in turn controls one or more auxiliary contacts directly or via another auxiliary transmission.
  • the movable switching element for example, a rotatable contact piece or a thrust contact, also called switching pin.
  • the switching device is characterized in that its control means also has a second region corresponding to the second position of the switching element. This second area is coupled to the shift position detection element in such a way that the first rotational angle offset and the second rotational angle offset leads to a further indication of another shift position, but nevertheless leads to a respectively identical display of the shift position detection element for the second shift state in that second shift position.
  • a drive unit which includes an electric motor is recommended.
  • This electric motor transmits the For switching the switching member required torsion on the input portion of the flexible shaft, for example via a secondary transmission.
  • the drive unit is additionally or alternatively also manually operated.
  • the input portion of the flexible shaft itself, or an axis of a mechanically connected with her sub-transmission have a plug-in coupling for receiving a hand crank.
  • the display of the switching position detection element on the auxiliary contact in the form of an electrical signal can be tapped, for example, to supply it to a switching logic or switchgear control.
  • the switching position detection element is connected, for example, with at least one auxiliary contact such that one of the first position of the switching element corresponding display of the switching position detection element, ie the switching state, the auxiliary contact can be tapped off as an electrical signal.
  • the at least one auxiliary contact may have a contact element which can be rotated about an axis.
  • this axis is formed by the switching position detection element itself. If required, a further (linear) intermediate gear between shift position detection element of the axis carrying the contact element is possible.
  • auxiliary contacts for example, due to their design require a non-linear, ie unsteady, jerky control, a switching device is recommended in which the first intermediate gear is a non-linear gear, with to which the shift position detection element is non-linearly controllable to the second rotation angle of the input section.
  • a non-linear switching of the auxiliary contacts may be required because it leads to a sufficiently high switching speed at the electrical contacts of the auxiliary contacts, so that even with undervoltage (slowest possible control of the auxiliary contacts) and overvoltage (the fastest possible control of the auxiliary contacts) a reliable circuit Auxiliary contacts is ensured.
  • auxiliary contacts have a rotatable contact element and a stationary contact area.
  • the contact area is swept in the circumferential direction of the rotatable contact element.
  • the length of the contact area is assembled during the assembly of the auxiliary contact and may therefore sometimes be subject to major deviations from Idealmass and / or the ideal shape.
  • the effects of such tolerances are largely compensated.
  • the control means comprises a gate control.
  • this can itself be a slide control, for example, to to convert a linear movement back into a rotary motion.
  • Normally slide controls are inexpensive and economical to produce due to their simplicity.
  • a lever mechanism can be used instead of the link or in combination.
  • the control means or at least a portion of it is also rotatably mounted.
  • the slide control can also be multi-part, for example, be composed of several parts. Even with such an embodiment, in a switching device whose switching element knows two defined switching states, especially the size and shape of the end positions of the link control crucial.
  • the control means can be designed such that even when using a flexible shaft having a different second length to the first length and thus a magnitude different other first rotational angle offset and a different size second rotational angle offset in turn lead to an identical display of the switching position detection element and thus the predefinable switching state.
  • a link control whose Langlochnut in a switching state corresponding section has so long and / or such a shape that a certain angle of rotation offset range is thus coverable without the Display of the shift position detection element changes.
  • the gate section forming the angle of rotation offset region forms an overflow in this case.
  • the first intermediate gear can be generated by the drive unit rotational movement on To convert input section into a linear movement
  • the first intermediate gear can have at least one spindle-driving nut combination.
  • At least one (electric) limit switch operable preferably a limit switch, with which the achievement of a predefinable position or position can be read or detected electrically and forwarded is.
  • the limit switch can be formed by a further auxiliary contact.
  • the limit switch prefferably be arranged on a mounting position selected as a function of a rotational angle offset characteristic, in particular of an overall length, of the flexible shaft, relative to the driving nut of the spindle-driving-nut combination.
  • This mounting position can be taken, for example, from a table of corresponding tested, different lengths of flexible shafts of the same type or even different types, such as from other manufacturers.
  • a typical flexible shaft is designed to transmit a rotational movement in one direction of rotation. If it is nevertheless operated in the opposite direction, then the torsion spring behavior and thus the angular displacement is often so different that they are not suitable for use in a switching device.
  • the inventive switching device which is characterized in that the flexible shaft has at least two strand layers with a different winding direction, which Litzenlagen are such that at identical second rotation angle of the first rotation angle offset or the second rotation angle offset during operation of the flexible shaft clockwise less than 20% of the first Rotary angle offset or the second angle of rotation offset during operation of the flexible shaft deviates counterclockwise.
  • the drive unit is not permanently connected permanently to the switching element, but releasably coupled to the switching element.
  • An advantage of the detachability occurs, for example, when the drive mechanism on the one side of the flexible shaft meets only at the place of commissioning of the switching device on the associated switching element.
  • the switching device is characterized in that the input portion and / or the output portion of the flexible shaft have a releasable further coupling. Toothed shaft couplings are particularly suitable because they allow a very precise assembly and coupling of the flexible shaft with the switching element and the drive unit, especially if they are in predetermined basic settings.
  • the flexible shaft can also be used as a setting element.
  • Flexible shafts have the property whose angular displacement increases with increasing torque load. This property is particularly disadvantageous when using electric motors as a drive unit.
  • electric motors have the disadvantage that in comparison to the speed required at the switching element have too high a rated speed to provide the rated power can. Therefore, it is particularly when using an electric motor as a drive unit for moving the switching member to provide a switching device, which is characterized in that at the output portion of the flexible shaft, a mechanical second intermediate gear is arranged.
  • the second intermediate gear is a reduction and has an input terminal and an output terminal, wherein with the second intermediate gear, a speed of the output terminal with respect to a speed of the input terminal is reduced.
  • This second intermediate gear allows that the rotational speed of the flexible shaft can be kept as high as possible, whereby the shaft only relatively little torque must be transmitted - which causes a smaller angular displacement than when the same power transmission but a low speed, a comparatively higher torque to be transmitted ,
  • the second intermediate gear transformed from it again a small speed at high torque, as is required at the switching element in the rule.
  • the second intermediate gear is an angle gear.
  • the switching device is characterized, for example, characterized in that the drive train has an optical switch position display, which is connected against rotation with the first intermediate gear.
  • gas-insulated switchgear in which the switching element is electrically isolated by an insulating gas from a metal-enclosed housing of the actual switch.
  • This is particularly advantageous for gas-insulated switchgear whose switching elements are often spatially arranged several meters at sometimes difficult to reach places in a panel.
  • the physical separation of the switching element and the drive unit also allows, for example, an arrangement of the drive unit in the control cabinet of the switchgear, while the actual switch is located somewhere in the switchgear itself.
  • the gapless mechanical chain also called kinematic chain
  • visually represent the simplest way for example by a sight glass arranged behind a cover of the control cabinet drive breaks the cover locally and so an operator direct visual access to the switch position display.
  • Another advantage of the flexible shaft is that even with staggered and / or rotated about the axes of the orthogonal alignment system alignments of the switching device - in three-dimensional space - allows a relatively easy to implement, reliable mechanical connection to the movable switching element.
  • a reliable and easily accessible to the operator insight of the switch position display on an ergonomically preferred position can be realized with the inventive switching device even then, when the switch containing the switching element is itself installed facing away from the operator in a difficult to reach position in the switchgear.
  • a largely free arrangement of the switching device in the three-dimensional space of a switchgear contributes significantly to the flexible applicability of arranged with flexible shafts switching devices.
  • the flexible shaft gives the usability of the switching device and its drive a very large degree of freedom.
  • shape and / or position and / or dimensional deviations between the drive unit and switching element / switch can be easily compensated by the flexible, flexible shaft.
  • the flexible shaft for example, between the control cabinet and a switchgear with such a switching device allows a largely free way of laying.
  • the object is achieved in that it has at least one switching device according to the invention.
  • the advantages mentioned in connection with the switching device accordingly apply to such switchgear.
  • GIS gas-insulated switchgear
  • DTB dead tank breaker
  • LTB live tank breaker
  • AIS air-insulated switchgear
  • FIG. 5 shows a side view of a gas-insulated switchgear with stylized illustrated in partial section switching device 4, wherein only one electrical phase is illustrated.
  • the flexible shaft 1 comprises a rotatably mounted part, as well as a static during operation of the flexible shaft part, which is formed by an armored enclosure.
  • the drive 2 is arranged in a drive cabinet 6.
  • the drive cabinet 6 directly adjoins an operating passage 7, so that an operator 8 of the switchgear has optimum access and optimal optical insight to the drive 2.
  • the switching device has a switching element that can be moved from a first predefinable position to a second predefinable position.
  • the switching device 4 is a disconnector (disconnector), with which a first nominal conductor 9 of an electrical phase (R, S or T) with a second nominal conductor 10 corresponding electrical phase are electrically connected to each other or separable.
  • the switching-element-side ends of these nominal conductors form the switching poles.
  • At least one isolator or switching device of this type is typically used per electrical phase.
  • the switching device 4 itself has a drive 2 with a drive unit 13 for generating a rotational movement of the flexible shaft 1 and for the purpose of transmitting the rotational movement to the switching element 3.
  • the drive unit 13 comprises an electric motor, which is connected via a first secondary transmission 14 to a rotatable input section 16 of the flexible shaft 1.
  • the input portion 16 in turn comprises a spindle 17.
  • This spindle 17 is movably connected to a driving nut 18, so that one revolution of the spindle causes a linear movement with a length corresponding to the pitch of the threaded spindle 17.
  • the driving nut 18 has a switching cam 19 for interacting with limit switches 20.
  • the driving nut 18 also has a switching pin 22, which engages in a Langlochnut a control means 23 in the form of a transversely to the shift pin 22 movably mounted link 23.
  • This gate 23 in turn controls a shift position detection element 24 mechanically, so that the drive unit 13 and the switching element 3 is finally assembled via a kinematic chain of exclusively mechanical components and connected to the shift position detection element 24.
  • the backdrop 23 is in Fig.2 for clarity in a relation to the switching pin 22 rotated by 90 ° position shown.
  • the flexible shaft 1 On the output side, ie on the side of the switching element 3, the flexible shaft 1 has a rotatable output section 25.
  • a first angle of rotation 28 at the output portion can be generated at the flexible shaft at time t2, t3 (until shortly before t4) which is less than a second angle of rotation 29 at the input section 16 at the same time (t2, t3), so that a first Rotation angle offset 30 results (see the FIGS. 3 to 5 in synopsis with FIG. 2 ).
  • a third rotation angle 31 can be generated at the output portion 25, which is smaller than the second rotation angle 29 at the input portion at the same time, resulting in a second rotation angle offset 32 which is larger is the first rotational angle offset 30 (see the FIGS. 3 to 6 in synopsis with FIG. 2 ).
  • the input portion 16 of the flexible shaft 1 is connected via a mechanical first intermediate gear 37 with the shift position detection element 24, wherein the first intermediate gear 37 in the in FIG. 2 shown embodiment, the threaded spindle 17, the driving nut 18, the switching cam 19, the limit switch 20, the switching pin 22, and the control means forming the gate 23 comprises.
  • the control means 23 further comprises a first region 38 corresponding to the first position of the switching element 3, which is coupled to the shift position detection element 24 such that the first rotational angle offset 30 and the second rotational angle offset 32 lead to an identical indication of the shift position detection element 24 and thus the same electrical switching state Show.
  • the technical effect of such a display in connection with the corresponding switching state is in connection with the FIGS. 3 to 6 be discussed in more detail.
  • the FIG. 3 shows a control means 23 for two unique to be detected electrical switching positions (switching states).
  • the switching pin was lined at time t4 and shown stylized only at times t3 and t5.
  • the switching pin 22 moves the link 23 depending on the switching state laterally in the direction of the double arrow 43.
  • the switching pin 22 and the link 23 together form a link control.
  • the control means 23 is connected to the shift position detection element 24 via a further linkage control 45. Of the other slide control 45 is in the FIG. 3 For clarity, only an arcuate slot path and a control pin shown.
  • the link 23 in addition to the first region 38 assigned to the first switching state, has a second region 39 assigned to the second switching state.
  • An intermediate connection region 40 connects the first and second regions 38, 39 and represents an electrical intermediate position between the switching poles, in which intermediate position the switching element 3 is mechanically located between the first end position (fully closed disconnector) and the second end position (disconnector fully open).
  • FIG. 4 shows a representation of a first angle of rotation and a second angle of rotation at the same time t3, t4 and t5 at the same switching state in the area 38 but different local positions of the movable switching member relative to the stationary mating contact (see FIG. 6 ).
  • FIG. 5 shows a representation of the resulting rotational angle offsets and the actual mechanical Position of the switching pin in the backdrop according to FIG. 3 at times t3, t4 and t5.
  • FIG. 6 shows a representation of depending on the actual mechanical position of the switching pin in the backdrop according to FIG. 3 changing switching state at the times t3, t4 and t5.
  • the rotational angle offset is substantially constant, since the switching element 3 until then no resistance, because the switching element has not yet reached its associated mating contact 46 up to this point.
  • the switching element of the switching device is in the transition from an open position to the closed position.
  • the user of the switching device knows about the indication that the switching element is in an intermediate position between two end positions.
  • the switching element 3 abuts against contact elements 47 of the mating contact 46, which ensure reliable transmission of the electrical power at a switch position in the first electrical switching state corresponding to the first region 38.
  • the switching element 3 designed as a pin contact is not yet fully moved into the mating contact 46, another electrical switching state is nevertheless already reached from now on, which the first intermediate gearbox correctly reproduces via the display of the switching position detection element.
  • FIG. 7 shows a torque-time diagram, which represents a torque input T E in the input-side input portion of the flexible shaft from a first switching position (switch fully open) to a second switching position (switch completely closed) during FIG. 8 a torque-time diagram which a torque input T A in the switch member side output section of the flexible shaft to those in FIG. 7 corresponding times.
  • the force required to move the pin contact 3 in this embodiment of the switching device remains reasonably constant (as does the rotational angle offset) because the contact forces of the contact elements 47 press the pin contact 3 against its lateral surface and thus produce a mechanical adhesive effect by the applied friction. Accordingly, the required torque at the output portion of the flexible shaft is the same or at least hardly changed.
  • the FIG. 9 shows a speed-time diagram, which is a rotational speed n E of the input-side input side of the flexible shaft to those in the FIGS. 4 to 8 corresponding times.
  • the speed increases continuously to a rated speed n1 until the acting as a torsion spring flexible shaft is biased ready.
  • the output section is said to be still largely largely silent, provided that the time offset between t0 and t1 is small and the inertia of the flexible wave is large.
  • the output section corresponding to the input section then also moves at the rated speed n1.
  • the speed drops to a second speed value n2 and then remains reasonably constant until an end position intended for the pin contact is reached and drops completely after the drive unit has been switched off.
  • the shift position detection element 24 is mechanically connected via a further link control 45 with the link 23.
  • the switching position detection element 24 is mechanically connected to a movable contact element of at least one auxiliary contact 55. Since the shift position detection element 24 is rotatable about a rotation axis 44, an embodiment of the at least one auxiliary contact is suitable as a rotary contact.
  • a display of the switching position detection element 24 corresponding to the first position of the switching element can be tapped off as an electrical signal 54 and forwarded to a switching logic and / or control unit.
  • the switching cam 19 Upon actuation of the two limit switches 20 by the switching cam 19, the attainment of a predeterminable position or position of the switching element or at least of the input section 16 in the form of a further electrical signal 53 can be tapped. Depending on the design of the switching device, this further signal for switching off the electric motor of the drive unit can be used.
  • the limit switches 20 are in dependence on a rotation angle offset characteristic, in particular the total length of the flexible shaft, at a selected Mounting position 65 relative to the driving nut 18 of the spindle drive nut combination and thus the switching cam 19 is arranged.
  • the auxiliary contacts are one or more controllable by a rotary motion auxiliary contacts, which require a jerky control. This takes place via the further slide control 45.
  • the flexible shaft can also be actuated manually via a hand crank 56.
  • the hand crank 56 is in this case in the direction of arrow at directly on a free, the operating gear 7 facing the end 57 of the input portion 16 attachable.
  • the input section 16 of the flexible shaft is connected in a form-fitting manner via a second secondary gear 58 to an optical switching position indicator 59.
  • the drive cabinet has a correspondingly shaped cutout or viewing window in the area of the optical switch position indicator 59.
  • both the drive side at the input portion, as well as the output side at the output portion, the flexible shaft is connected by means of a respective shaft coupling 60 releasably connected to the connection elements.
  • both the input section 16, as well as the output section 25 is rigid and formed from at least two parts, which two parts operation of the switching device with a toothed shaft coupling 60 are rotatably connected to each other.
  • Second intermediate gear 61 At the output end of the flexible shaft whose output portion 25 is connected via a linear, second intermediate gear 61 in the form of a gear transmission with the switching pin 3.
  • This is the second one Intermediate gear a reduction and has an input terminal 62 and an output terminal 63.
  • a rotational speed at the output port 63 is reducible from a rotational speed at the input port 62, at the same time the second intermediate gear 61 increases a low torque at the input port 62 to a higher torque at the output port 63.
  • FIG. 10 shows a control means for three unique to be detected electrical switch positions, as it would be used for a combined disconnector / earth switch.
  • the control means 23 now has, in addition to the first region 38 and the second region 39, a third region 66, which corresponds to a third switching state of the switching device.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP11175792.8A 2011-07-28 2011-07-28 Commutateur avec organe de commutation actionné par onde flexible Active EP2551886B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11175792.8A EP2551886B1 (fr) 2011-07-28 2011-07-28 Commutateur avec organe de commutation actionné par onde flexible
KR1020120082812A KR101375383B1 (ko) 2011-07-28 2012-07-27 가요성 축에 의해 구동되는 스위칭 요소를 갖는 스위칭 디바이스
US13/560,677 US8779310B2 (en) 2011-07-28 2012-07-27 Switching device with a switching element driven via a flexible shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11175792.8A EP2551886B1 (fr) 2011-07-28 2011-07-28 Commutateur avec organe de commutation actionné par onde flexible

Publications (2)

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EP2551886A1 true EP2551886A1 (fr) 2013-01-30
EP2551886B1 EP2551886B1 (fr) 2014-11-26

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EP11175792.8A Active EP2551886B1 (fr) 2011-07-28 2011-07-28 Commutateur avec organe de commutation actionné par onde flexible

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US (1) US8779310B2 (fr)
EP (1) EP2551886B1 (fr)
KR (1) KR101375383B1 (fr)

Cited By (1)

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WO2017021106A1 (fr) * 2015-08-06 2017-02-09 Siemens Aktiengesellschaft Procédé d'indication d'un état de commutation d'un appareil de commutation électrique, et dispositif pour la mise en oeuvre de ce procédé

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
FR3038465A1 (fr) * 2015-07-02 2017-01-06 Alstom Technology Ltd Commande d'equipements haute tension inclus dans un poste electrique sous enveloppe metallique
US9876335B2 (en) 2015-08-27 2018-01-23 Abb Schweiz Ag System, method and device for racking circuit breakers
FR3058828B1 (fr) * 2016-11-14 2020-02-21 Schneider Electric Industries Sas Selecteur de fonctionnement d'un sectionneur de mise a la terre
KR200494885Y1 (ko) * 2020-03-24 2022-01-17 엘에스일렉트릭(주) 단로기
CN112315489B (zh) * 2020-10-23 2023-03-31 深圳蓝影医学科技股份有限公司 X光机的平衡方法

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US2441808A (en) * 1946-03-08 1948-05-18 Bell Telephone Labor Inc Remote control mechanism
DE8336821U1 (de) * 1983-12-22 1984-04-19 Ritter Starkstromtechnik GmbH & Co, 4600 Dortmund Gestängeantrieb
US5466902A (en) 1993-11-23 1995-11-14 Abb Power T&D Company Inc. Switch operator and interlock mechanism

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US5268543A (en) * 1992-03-17 1993-12-07 S&C Electric Company Locking arrangement for disconnect switch
JP4180455B2 (ja) 2003-07-24 2008-11-12 アルプス電気株式会社 力覚付与型入力装置
FR2945661A1 (fr) * 2009-05-18 2010-11-19 Schneider Electric Ind Sas Evaluation de l'usure de contacts enfonces par la variation de la rotation de l'arbre des poles

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Publication number Priority date Publication date Assignee Title
US2441808A (en) * 1946-03-08 1948-05-18 Bell Telephone Labor Inc Remote control mechanism
DE8336821U1 (de) * 1983-12-22 1984-04-19 Ritter Starkstromtechnik GmbH & Co, 4600 Dortmund Gestängeantrieb
US5466902A (en) 1993-11-23 1995-11-14 Abb Power T&D Company Inc. Switch operator and interlock mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017021106A1 (fr) * 2015-08-06 2017-02-09 Siemens Aktiengesellschaft Procédé d'indication d'un état de commutation d'un appareil de commutation électrique, et dispositif pour la mise en oeuvre de ce procédé

Also Published As

Publication number Publication date
US20130186736A1 (en) 2013-07-25
US8779310B2 (en) 2014-07-15
EP2551886B1 (fr) 2014-11-26
KR101375383B1 (ko) 2014-03-17
KR20130014435A (ko) 2013-02-07

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