EP3069361B1 - Contact unit - Google Patents
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- Publication number
- EP3069361B1 EP3069361B1 EP14796091.8A EP14796091A EP3069361B1 EP 3069361 B1 EP3069361 B1 EP 3069361B1 EP 14796091 A EP14796091 A EP 14796091A EP 3069361 B1 EP3069361 B1 EP 3069361B1
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- EP
- European Patent Office
- Prior art keywords
- contact
- unit according
- housing
- contact unit
- previous
- Prior art date
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- 238000007906 compression Methods 0.000 claims description 18
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- 230000036316 preload Effects 0.000 claims 1
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- 239000000463 material Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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- 239000012811 non-conductive material Substances 0.000 description 1
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- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
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
- H01H9/0005—Tap change devices
- H01H9/0044—Casings; Mountings; Disposition in transformer housing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
-
- 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
- H01H9/0005—Tap change devices
- H01H9/0016—Contact arrangements for tap changers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2235/00—Springs
- H01H2235/01—Spiral spring
Definitions
- the present invention relates to a contact unit for switching between winding taps of a control winding of a tapped transformer.
- a contact unit is particularly preferred in electrical switching devices of high voltage technology, such as voters or switches, usable. Both types of devices is common that the switching between the winding taps of the control winding of the tapped transformer is completed without power.
- DE 27 54 682 B describes a tap changer for a tap changer of tap-changer transformers with a dial column, which carries two concentric drive tubes and thereon per phase arranged in different planes contact rings which are connected to arranged in the interior of the dial column connection lines.
- this document proposes that the supported by the inner drive tube contact bridge housing is fixed by means of one above and below the contact bridge arranged arcuate, the tube diameter adapted approach to the inner drive tube and that both these arcuate approaches as well as the contact bridge its own existing in the outer drive tube, extending around the circumference recess protrudes.
- the actual contact element is formed in this document as a contact bridge, which produces an electrically conductive connection between the associated contact ring on the one hand and the selector terminal contact on the other.
- the contact element is arranged in a fixedly connected to the drive tube contact bridge housing and thus difficult to access in case of maintenance, or interchangeable.
- the assembly of the entire contact assembly for the manufacturer is cumbersome and time consuming.
- DE 32 15 110 A1 describes a contact device for connecting conductors, consisting of a movable contact group with two movable contacts and a plurality of rod-shaped fixed contacts, which can be clamped individually between the movable contacts.
- the movable contacts are housed in a U-shaped housing and are pressed towards each other by means of the guide pins or guide pins and by means of the compression springs which are arranged between the contacts and take effect.
- the movable contact group and with it the housing are driven and moved by a drive mechanism.
- DE 1 788 013 B describes a tap selector with tap changer for variable-speed transformers, the turntable having a moveable reversing contact fixed in a segment which in turn is attached to support bars.
- US Pat. No. 3,812,309 describes a high voltage circuit breaker having a stationary jaw contact assembly, a pivotable switching blade assembly, and suitable connecting and operating elements for effecting movement of the switching blade to open and close the switch.
- the stationary jaw contact assembly is mounted on a suitably anchored support structure.
- the support structure has a generally U-shaped cross section and provides a frame to which the contacts of the jaw contact assembly are mounted to extend into a suitably shielded interior defined by the frame.
- the frame is isolated from the ground potential by being properly anchored to a base member.
- U-shaped loop contact elements are attached to opposite end walls of the frame.
- Such loop contactors are typically made of an elastic material having suitable strength and electrical properties to conduct currents of the order of 1200A and more.
- DE 1 139 917 B describes a rotary switch for power transformers, which consists of the hard paper cylinder, which is designed as a rotary switch and to which the contact carrier are attached. Furthermore, two-armed, scissor-shaped intermediate pieces are attached to these contact carriers, which are passed through recesses in the cylinder wall. Concentric around the cylinder insulating rods are arranged in a corresponding number, for example, carry trapezoidal knife contacts including their guides. In the interior of the cylinder, the drive shaft is provided, which is designed with respect to the torsional stiffness best as Isolierstoffhohlzylinder. In the wave special, firmly coupled with their intermediate pieces are inserted, which have band-shaped extensions.
- DE 1 231 805 A describes a tap selector for tap changers of control transformers with fixed switching column with slip rings and rotatable about the switching column, externally driven contact bridges that provide the connection between the slip rings and arranged in a circle, fixed step connection contacts. It is envisaged that the switching column is divided like a box according to the number of phases of Anzapfduslers in individual, superimposed in the axial direction pipe sections of resin and each slip ring consists of two current rings, which are partially molded at the joints of adjacent pipe sections and serve to attach the pipe sections together.
- the document DE 10 2007 023124 B3 relates to a switching arrangement with two operating positions for switching a winding during the transformer operation, wherein the switching commutes a through-current from one current path to another current path.
- solid contacts are arranged in several horizontal planes around a rotatable switching shaft on a Isolierstoffgerüst having upper and lower contact fingers which are pressed apart and can be connected by an electrically conductive rail as a movable switching contact.
- the document AT 303 899 B relates to a contact arrangement for stage selectors of control transformers with a contact bridge of two similar, superimposed, movable in a horizontal plane, at least one mating contact cushioned enclosing contact parts for bridging a fixed to a central column of votes current ring and fixed selector contacts, which are arranged in a circle around the dial column.
- the general inventive idea is to receive the contact element of the contact unit in a separate contact housing, so that the contact element and the contact housing form a separate assembly and that the contact housing including the contact element in a recess provided in the contact holder can be fixed by means of a holding element.
- the invention provides a contact unit for switching between winding taps of a control winding of a tapped transformer, which is easy to install and can be replaced quickly and easily in case of maintenance.
- the contact housing is designed as a container which is open on two opposite sides, namely a front side and a rear side, and has a flange-like shielding ring in the region of the front side, on the outer circumference of the contact housing.
- the contact housing for resilient mounting of the contact element on an upper side and / or underside each pen provide that penetrate the top and / or bottom of the contact housing and be arranged between the contact element and the spring springs compression springs.
- the spring holder has a groove with a groove bottom and a has wedge-shaped ramp.
- the holding element may be U-shaped, have a headband and hollow leg formed.
- the headband can also be designed to positively engage in the latched state of the separate module and contact in the groove.
- the legs of the retaining element can each have a compression spring be provided, which cooperates with a respective bolt provided on a cover, such that the fixed in the contact holder by means of fixing bolts lid squeezes the respective compression spring under a defined bias and thus presses the headband into the groove.
- a slot may be provided in the contact element into which engages a fixedly arranged on the contact housing pin.
- the contact element can be designed as a knife contact consisting of a plurality of individual contacts, which protrudes out of the contact housing in its longitudinal dimension on both sides.
- the contact holder has at least one opening in which a receiving means, preferably a pultruded rod, can be received.
- the receiving means may also be formed from hard paper or hard tissue.
- FIG. 1a is a schematic representation of a contact unit according to the invention beispielhalft shown for a three-phase application in a selector or diverter for a tapped transformer.
- Such electrical high-voltage switching devices such as voters or diverters, are known in the art for decades and are used for current and voltage-free switching between winding taps of a control winding of the tapped transformer.
- Each of the in FIG. 1a represented contact unit according to the invention in this case has a contact holder 1, which is fastened to at least one pultruded rod, which serves as a receiving means 2 for the corresponding contact unit.
- two substantially parallel bars arranged as receiving means 2 are provided.
- the contact holder 1 may be formed as an injection molded part or as an SMC part and have a content of, for example, 50% glass fiber mixture.
- the contact holder 1 is an electrically non-conductive component.
- the contact holder 1 is preferably formed in one piece and provided for mechanical fixation, each with an opening 3 for each of the receiving means 2, in which the corresponding receiving means 2 is inserted and held firmly by means of fixing elements 4. Shown are in the FIG. 1a two openings 3, in which the two serving as receiving means 2 rods are inserted.
- each opening 3 and the outer diameter of the corresponding receiving means 2 vary in this case by only a few tenths of a millimeter, such that the receiving means 2 is already supported by the insertion into the corresponding opening 3 substantially contact-only.
- a mechanical positive connection is achieved.
- each contact holder 1 has a recess 5, in which a separate contact housing 6 with a corresponding contact element 7 can be inserted and mechanically fixed by means of a holding element 8, not shown here.
- the openings 3 of the corresponding contact holders 1 are arranged to the right of the respective recesses 5.
- FIG. 1b shows a detailed view of a single contact unit, which is also arranged on two pultruded rods as a receiving means 2.
- the contact holder 1 in the region of the openings 3, but also the recesses 5 a plurality of webs. Overall, this results in a particularly light and mechanically stable overall structure for the contact holder. 1
- FIG. 2a and 2 B are shown in a detailed view or sectional view of the contact housing 6 with contact element 7 and the essential components for mounting the contact housing 6 together with the contact element 7 in the contact holder 1.
- the made of a preferably electrically conductive material, in particular a conductive plastic, contact housing 6 is formed as a substantially cuboidal container, which is open on two opposite sides, namely on a front side 6.1 and a rear side 6.2.
- a flange-like shield ring 9 is also provided in the region of the front side 6.1, on the outer circumference of the contact housing 6.
- the contact element 7 is designed as a blade contact 7.1.
- the front side 6.1 and the rear side 6.2 have the open sides of the contact housing 6 in its longitudinal dimension on both sides surmounted.
- For the resilient mounting of the individual contact blades 7.1 ... 7.4 sees the contact housing 6 at a top 6.3 or bottom 6.4 each two penholder 10.1 and 10.2, which penetrate the top 6.3 and bottom 6.4 of the contact housing 6 and where on the contact blades 7.1 ... 7.4 facing inner sides for each of the contact blades 7.1 ... 7.4 each a compression spring 11.1 and 11.2 is arranged.
- Thedonnauslenkiana the individual contact blades 7.1 ... 7.4 is defined by a provided in the respective contact blades 7.1 ...
- the contact housing 6 including the components therein, ie the contact element 7, as well as the spring holder 10.1 and 10.2 form a pre-assembled separate assembly that is latched and releasably supported by simply pushing in the contact holder 1.
- the contact housing 6 provides on the 6.1 front facing spring holder 10.1 a groove 14 with a groove bottom 14.1 and a wedge-shaped ramp 15 before, wherein a Retaining clip 16 of a substantially U-shaped retaining element 8, which in turn is accommodated in the contact holder 1, is designed such that the retaining clip 16 engages positively, ie accurately, in the groove 14 of the retaining element 8.
- the headband 16 is pressed in the latched, ie mounted, state against the groove bottom 14.1 with a defined contact force is in hollow legs 18.1 and 18.2 of the U-shaped support member 8 each one in the FIG. 2a and 2 B not shown compression spring 19.1 and 19.2 provided, which cooperates with one provided on a cover 20 bolts 21.1 and 21.2, such that the fixed in the contact holder 1 by means of fixing bolts 22.1 and 22.2 fixed cover 20 with its bolts 21.1 and 21.2 the respective compression spring 19.1 and 19.2 compresses under a defined bias and thus presses the headband 16 in the groove 14.
- FIG. 3 shows in a further sectional side view of the contact holder 1 with inserted contact housing 6.
- the holding element 8 with the arranged in the hollow legs 18.1 and 18.2 compression springs 19.1 and 19.2 and the lid 20 with the bolts 21.1 and 21.2 of the recess 5 of the contact holder 1 assigned and mechanically fixed by means of the fixing bolts 22.1 and 22.2 in the recess 5.
- this assembly is in the recess 5 of the contact holder 1, in which its associated components, namely the support member 8, the compression springs 19.1 and 19.2, the cover 20 and the fixing bolts 22.1 and 22.2 are pre-assembled, inserted in the direction of the arrow.
- the retaining bracket 16 slides from the rear side 6.2 in the direction of the front side 6.1 on the upper or lower side 6.3 and 6.4 via the spring holder 10.1 and then over the ramp 15 until the retaining bracket 16 latches in the groove 14.
- a tool between the two facing ends of the legs 18.1 and 18.2 are introduced and the bolts 21.1 and 21.2 against the spring force of the corresponding compression springs 19 are pressed apart until the headband 16th has lifted from the groove bottom 14.1 to the height difference of the groove 14 and the separate assembly can thus be pulled against the direction of the arrow from the recess 5 of the contact holder 1.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
Die vorliegende Erfindung betrifft eine Kontakteinheit zum Umschalten zwischen Wicklungsanzapfungen einer Regelwicklung eines Stufentransformators. Eine derartige Kontakteinheit ist besonders bevorzugt bei elektrischen Schaltgeräten der Hochspannungstechnik, wie beispielweise Wählern oder Umstellern, verwendbar. Beiden Gerätegattungen ist dabei gemeinsam, dass die Umschaltung zwischen den Wicklungsanzapfungen der Regelwicklung des Stufentransformators laststromlos vollzogen wird.The present invention relates to a contact unit for switching between winding taps of a control winding of a tapped transformer. Such a contact unit is particularly preferred in electrical switching devices of high voltage technology, such as voters or switches, usable. Both types of devices is common that the switching between the winding taps of the control winding of the tapped transformer is completed without power.
Das eigentliche Kontaktelement ist bei diesem Dokument als Kontaktbrücke ausgebildet, das eine elektrisch leitende Verbindung zwischen dem ihm zugeordneten Kontaktring einerseits und dem Wähleranschlusskontakt andererseits herstellt. Das Kontaktelement ist dabei in einem fest mit dem Antriebsrohr verbundenen Kontaktbrückengehäuse angeordnet und damit im Wartungsfall nur schwer zugänglich, bzw. austauschbar. Zudem ist die Montage der gesamten Kontaktbaugruppe für den Hersteller umständlich und zeitaufwändig.The actual contact element is formed in this document as a contact bridge, which produces an electrically conductive connection between the associated contact ring on the one hand and the selector terminal contact on the other. The contact element is arranged in a fixedly connected to the drive tube contact bridge housing and thus difficult to access in case of maintenance, or interchangeable. In addition, the assembly of the entire contact assembly for the manufacturer is cumbersome and time consuming.
Das Dokument
Das Dokument
Vor diesem Hintergrund schlägt die Erfindung den Gegenstand des unabhängigen Anspruchs vor. Die abhängigen Ansprüche beziehen sich auf bevorzugte Weiterbildungen der Erfindung.Against this background, the invention proposes the subject matter of the independent claim. The dependent claims relate to preferred developments of the invention.
Die allgemeine erfinderische Idee besteht darin, das Kontaktelement der Kontakteinheit in einem separaten Kontaktgehäuse aufzunehmen, so dass das Kontaktelement und das Kontaktgehäuse eine separate Baugruppe bilden und dass das Kontaktgehäuse einschließlich des Kontaktelements in einer in der Kontakthalterung vorgesehenen Ausnehmung mittels eines Halteelements fixierbar sind.The general inventive idea is to receive the contact element of the contact unit in a separate contact housing, so that the contact element and the contact housing form a separate assembly and that the contact housing including the contact element in a recess provided in the contact holder can be fixed by means of a holding element.
Somit stellt die Erfindung eine Kontakteinheit zum Umschalten zwischen Wicklungsanzapfungen einer Regelwicklung eines Stufentransformators bereit, die einfach montierbar ist und sich im Wartungsfall schnell und unkompliziert austauschen lässt.Thus, the invention provides a contact unit for switching between winding taps of a control winding of a tapped transformer, which is easy to install and can be replaced quickly and easily in case of maintenance.
Weiterhin vorteilhaft ist das Kontaktgehäuse als Behältnis ausgebildet, das auf zwei gegenüberliegenden Seiten, nämlich einer Vorderseite und einer Rückseite, offen ausgebildet ist und im Bereich der Vorderseite, am äußeren Umfang des Kontaktgehäuses, einen flanschartigen Schirmring aufweist.Further advantageously, the contact housing is designed as a container which is open on two opposite sides, namely a front side and a rear side, and has a flange-like shielding ring in the region of the front side, on the outer circumference of the contact housing.
Auch kann das Kontaktgehäuse zur federnden Lagerung des Kontaktelements an einer Oberseite und/oder Unterseite jeweils Federhalter vorsehen, die die Oberseite und/oder Unterseite des Kontaktgehäuses durchdringen und zwischen dem Kontaktelement und den Federhaltern Druckfedern angeordnet sein.Also, the contact housing for resilient mounting of the contact element on an upper side and / or underside each pen provide that penetrate the top and / or bottom of the contact housing and be arranged between the contact element and the spring springs compression springs.
Es besteht die Möglichkeit, dass der Federhalter eine Nut mit einem Nutboden sowie eine keilförmige Rampe aufweist. Das Halteelement kann dabei U-förmig ausgebildet sein, einen Haltebügel und hohl ausgebildete Schenkel aufweisen. Zudem ist es auch denkbar, den Haltebügel als Blechbügel auszubilden. Der Haltebügel kann zudem ausgebildet sein, um im verrasteten Zustand der separaten Baugruppe form- und kontaktschlüssig in die Nut einzugreifen. In den Schenkeln des Halteelements kann weiterhin jeweils eine Druckfeder vorgesehen sein, die mit jeweils einem an einem Deckel vorgesehenen Bolzen zusammenwirkt, derart, dass der in der Kontakthalterung mittels Fixierbolzen fest gehalterte Deckel mit seinen Bolzen die jeweilige Druckfeder unter einer definierten Vorspannung zusammendrückt und damit den Haltebügel in die Nut presst.There is the possibility that the spring holder has a groove with a groove bottom and a has wedge-shaped ramp. The holding element may be U-shaped, have a headband and hollow leg formed. In addition, it is also conceivable to form the headband as a sheet metal bracket. The headband can also be designed to positively engage in the latched state of the separate module and contact in the groove. In the legs of the retaining element can each have a compression spring be provided, which cooperates with a respective bolt provided on a cover, such that the fixed in the contact holder by means of fixing bolts lid squeezes the respective compression spring under a defined bias and thus presses the headband into the groove.
Auch vorteilhaft kann in dem Kontaktelement ein Langloch vorgesehen sein, in das ein an dem Kontaktgehäuse fest angeordneter Stift greift. das Kontaktelement kann als ein aus mehreren Einzelkontakten bestehender Messerkontakt ausgebildet sein, das in seiner Längsabmessung zu beiden Seiten hin aus dem Kontaktgehäuse ragt.Also advantageously, a slot may be provided in the contact element into which engages a fixedly arranged on the contact housing pin. The contact element can be designed as a knife contact consisting of a plurality of individual contacts, which protrudes out of the contact housing in its longitudinal dimension on both sides.
Schließlich besteht noch die Möglichkeit, dass die Kontakthalterung wenigstens eine Öffnung aufweist, in der ein Aufnahmemittel, vorzugsweise ein pultrudierter Stab, aufnehmbar ist. Alternativ kann das Aufnahmemittel auch aus Hartpapier oder Hartgewebe ausgebildet sein. Indem die Aufnahmemittel sowie die Kontakthalterung aus elektrisch nichtleitendem Werkstoff gebildet werden, können große Spannungen auf kleinem Bauraum über den Regelbereich zwischen den Anschlusskontakten und dem Stromring gehalten werden.Finally, there is still the possibility that the contact holder has at least one opening in which a receiving means, preferably a pultruded rod, can be received. Alternatively, the receiving means may also be formed from hard paper or hard tissue. By the receiving means and the contact holder are formed of electrically non-conductive material, large voltages can be kept in a small space over the control range between the terminals and the current ring.
Weiterbildungen, Vorteile und Anwendungsmöglichkeiten der Erfindung ergeben sich auch aus der nachfolgenden Beschreibung von Ausführungsbeispielen und aus den Figuren.Further developments, advantages and applications of the invention will become apparent from the following description of exemplary embodiments and from the figures.
Auch wird der Inhalt der Ansprüche zu einem Bestandteil der Beschreibung gemacht.Also, the content of the claims is made an integral part of the description.
Die Erfindung soll nachstehend an Hand von Zeichnungen beispielhaft noch näher erläutert werden. Es zeigen:
- FIG. 1a
- eine schematische Darstellung einer Kontakteinheit;
- FIG. 1b
- eine Detailansicht der Kontakteinheit;
- FIG. 2a
- eine Detailansicht eines Kontaktgehäuses mit Kontaktelement;
- FIG. 2b
- eine seitliche Schnittdarstellung des Kontaktgehäuses mit Kontaktelement;
- FIG. 3
- eine weitere seitliche Schnittdarstellung der Kontakthalterung mit eingeschobenen Kontaktgehäuse.
- FIG. 1a
- a schematic representation of a contact unit;
- FIG. 1b
- a detailed view of the contact unit;
- FIG. 2a
- a detailed view of a contact housing with contact element;
- FIG. 2 B
- a side sectional view of the contact housing with contact element;
- FIG. 3
- another lateral sectional view of the contact holder with inserted contact housing.
Für gleiche oder gleich wirkende Elemente der Erfindung werden identische Bezugszeichen verwendet. Das dargestellte Ausführungsbeispiel stellt lediglich eine Möglichkeit dar, wie eine Kontakteinheit zum Umschalten zwischen Wicklungsanzapfungen einer Regelwicklung eines Stufentransformators ausgestaltet sein kann.For identical or equivalent elements of the invention, identical reference numerals are used. The illustrated embodiment represents only one possibility of how a contact unit for switching between winding taps of a control winding of a tapped transformer can be configured.
In
In den
Die
- 11
- Kontakthalterungcontact support
- 22
- Aufnahmemittelreceiving means
- 33
- Öffnungopening
- 44
- Fixierelementfixing
- 55
- Ausnehmungrecess
- 66
- KontaktgehäuseContact housing
- 77
- Kontaktelementcontact element
- 7.1...7.47.1 ... 7.4
- Kontaktmessercontact blade
- 88th
- Halteelementretaining element
- 99
- Schirmringshield ring
- 1010
- Federhalterpenholder
- 1111
- Federhalterpenholder
- 11.111.1
- Druckfedercompression spring
- 11.211.2
- Druckfedercompression spring
- 1212
- LanglochLong hole
- 1313
- Stiftpen
- 1414
- Nutgroove
- 14.114.1
- Nutbodengroove bottom
- 1515
- Ramperamp
- 1616
- Haltebügelheadband
- 18.118.1
- Schenkelleg
- 18.218.2
- Schenkelleg
- 19.119.1
- Druckfedercompression spring
- 19.219.2
- Druckfedercompression spring
- 2020
- Deckelcover
- 21.121.1
- Bolzenbolt
- 21.221.2
- Bolzenbolt
- 22.122.1
- FixierbolzenBolt Fixing
- 22.222.2
- FixierbolzenBolt Fixing
Claims (15)
- A contact unit for change-over switching between winding taps of a regulating winding of a tapped transformer, comprising- at least one receiving means (2);- a contact mount (1), which is arranged and mechanically fixable at the at least one receiving means (2) and in which a recess (5) is provided;- a contact element (7), which is constructed of an electrically conductive material;- a separate contact housing (6), in which the contact element (7) is accommodated such that the contact element (7) and the contact housing (6) form a separate module;characterized in that- the contact housing (6) inclusive of the contact element (7) is inserted and fixedly mounted by means of a holding element (8) in the recess (5).
- The contact unit according to the previous claim wherein- the contact housing (6) is constructed as a receptacle, which is formed to be open on two opposite sides, namely on a front side (6.1) and on a back side (6.2), and which has a flange-type shielding ring (9) in the area of the front side (6.1) at the outer circumference of the contact housing (6).
- The contact unit according to one of the previous claims wherein- the contact housing (6) provides spring retainers (10.1 10.2) at an upper side (6.3) and/or at a lower side (6.4), respectively, for spring-mounting the contact element (7).
- The contact unit according to claim 3 wherein- the respective spring retainer (10.1; 10.2) penetrates the upper side (6.3) and/or the lower side (6.4) of the contact housing (6); and- a compression spring (11.1; 11.2) is arranged in each case between contact element (7) and corresponding spring retainer (10.1; 10.2).
- The contact unit according to one of the claims 3 or 4 wherein- the spring retainer (10.1) has a groove (14) with a groove bottom (14.1) and a wedge-shaped ramp (15).
- The contact unit according to one of the previous claims wherein- the holding element (8) is formed to be U-shaped and has a retaining bracket (16) and limbs (18.1 and 18.2).
- The contact unit according to the previous claim wherein- the limbs (18.1; 18.2) are formed to be hollow.
- The contact unit according to claim 5 and one of the claims 6 or 7 wherein- the retaining bracket (16) is formed to engage into the groove (14) in a form-locking and contact-closing manner in the locked state of the separate module.
- The contact unit according to one of the claims 6 to 8 wherein- a compression spring (19.1; 19.2) is provided in each of the limbs (18.1; 18.2) of the holding element (8), which compression spring (19.1; 19.2) in each case interacts with a bolt (21.1; 21.2) provided at a cover (20) in such a manner that the cover (20), which is fixedly mounted in the contact mount (1) by means of fixing bolts (22.1; 22.2), compresses the respective compression spring (19.1; 19.2) with its bolts (21.1; 21.2) using a defined preload and thus presses the retaining bracket (16) into the groove (14).
- The contact unit according to one of the previous claims wherein- a slot (12) is provided in the contact element (7), into which slot (12) a pin (13) engages, which is fixedly arranged at the contact housing (6).
- The contact unit according to one of the previous claims wherein- the contact element (7) is constructed as a blade contact (7.1...7.4) consisting of a plurality of individual contacts, which contact element (7) projects longitudinally to both sides beyond the contact housing (6).
- The contact unit according to claim 1 wherein- the contact mount (1) has at least one aperture (3) into which the receiving means (2) is receivable.
- The contact unit according to the previous claim wherein- the receiving means (2) is constructed as a pultruded rod or made of laminated paper or of laminated fabric.
- The contact unit according to claim 12 wherein- the recess (5) of the contact mount (1) is arranged between and/or laterally adjacent to the apertures (3).
- Use of the contact unit according to one of the previous claims in a tap selector or in an off-circuit tap-changer.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201310112405 DE102013112405A1 (en) | 2013-11-12 | 2013-11-12 | Contact unit |
PCT/EP2014/074140 WO2015071209A1 (en) | 2013-11-12 | 2014-11-10 | Contact unit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3069361A1 EP3069361A1 (en) | 2016-09-21 |
EP3069361B1 true EP3069361B1 (en) | 2019-06-05 |
Family
ID=51871043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14796091.8A Active EP3069361B1 (en) | 2013-11-12 | 2014-11-10 | Contact unit |
Country Status (7)
Country | Link |
---|---|
US (1) | US9793067B2 (en) |
EP (1) | EP3069361B1 (en) |
CN (1) | CN105723487B (en) |
DE (1) | DE102013112405A1 (en) |
ES (1) | ES2744305T3 (en) |
UA (1) | UA119754C2 (en) |
WO (1) | WO2015071209A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4044206A1 (en) * | 2021-02-16 | 2022-08-17 | Hitachi Energy Switzerland AG | Contact unit and contact system for an on-load tap changer and on-load tap changer |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1139917B (en) * | 1957-01-28 | 1962-11-22 | Licentia Gmbh | Rotary switch for power transformers, each with contact units formed from contact jaws and blade contacts |
NL94688C (en) * | 1958-05-02 | 1960-06-15 | ||
DE1788013B1 (en) * | 1968-09-14 | 1971-12-02 | Reinhausen Maschf Scheubeck | STEP SELECTOR WITH TURNOVER FOR STEP SWITCH FROM RE GELTRANSFOR MATOREN |
BE758459A (en) * | 1969-11-03 | 1971-04-16 | Reinhausen Maschf Scheubeck | Contact bridge for step selectors intended for control transformers |
US3812309A (en) * | 1972-11-06 | 1974-05-21 | Gulton Ind Inc | Electrical switch with high pressure contacts |
DE2754682C2 (en) | 1977-12-08 | 1980-02-07 | Maschinenfabrik Reinhausen Gebrueder Scheubeck Gmbh & Co Kg, 8400 Regensburg | Step selector for step switches of step transformers |
JPS57180013A (en) * | 1981-04-28 | 1982-11-05 | Tokyo Shibaura Electric Co | Contact for tap changer |
DE102007023124B3 (en) * | 2007-05-16 | 2008-10-02 | Maschinenfabrik Reinhausen Gmbh | switching arrangement |
CN101383233B (en) * | 2008-02-26 | 2010-09-08 | 上海华明电力设备制造有限公司 | Moving contact for tap switch |
US7872203B2 (en) * | 2008-08-14 | 2011-01-18 | Cooper Technologies Company | Dual voltage switch |
CN202711965U (en) * | 2012-04-23 | 2013-01-30 | 莱茵豪森机械制造公司 | Contact means for stage selector of staged transformer |
-
2013
- 2013-11-12 DE DE201310112405 patent/DE102013112405A1/en not_active Withdrawn
-
2014
- 2014-11-10 UA UAA201605134A patent/UA119754C2/en unknown
- 2014-11-10 US US15/030,321 patent/US9793067B2/en active Active
- 2014-11-10 CN CN201480061838.XA patent/CN105723487B/en active Active
- 2014-11-10 EP EP14796091.8A patent/EP3069361B1/en active Active
- 2014-11-10 WO PCT/EP2014/074140 patent/WO2015071209A1/en active Application Filing
- 2014-11-10 ES ES14796091T patent/ES2744305T3/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
WO2015071209A1 (en) | 2015-05-21 |
CN105723487A (en) | 2016-06-29 |
US20160293351A1 (en) | 2016-10-06 |
US9793067B2 (en) | 2017-10-17 |
ES2744305T3 (en) | 2020-02-24 |
CN105723487B (en) | 2019-06-04 |
UA119754C2 (en) | 2019-08-12 |
DE102013112405A1 (en) | 2015-05-13 |
EP3069361A1 (en) | 2016-09-21 |
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