EP3320551B1 - Active part unit of a measurement transducer, and measurement transducer - Google Patents
Active part unit of a measurement transducer, and measurement transducer Download PDFInfo
- Publication number
- EP3320551B1 EP3320551B1 EP16747887.4A EP16747887A EP3320551B1 EP 3320551 B1 EP3320551 B1 EP 3320551B1 EP 16747887 A EP16747887 A EP 16747887A EP 3320551 B1 EP3320551 B1 EP 3320551B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- active part
- part unit
- winding tube
- press frame
- transducer
- 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.)
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- 238000005259 measurement Methods 0.000 title claims 8
- 238000004804 winding Methods 0.000 claims description 57
- 150000001875 compounds Chemical class 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 238000003825 pressing Methods 0.000 description 20
- 239000004020 conductor Substances 0.000 description 10
- 239000012212 insulator Substances 0.000 description 9
- BJXYHBKEQFQVES-NWDGAFQWSA-N enpatoran Chemical compound N[C@H]1CN(C[C@H](C1)C(F)(F)F)C1=C2C=CC=NC2=C(C=C1)C#N BJXYHBKEQFQVES-NWDGAFQWSA-N 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
Definitions
- the invention relates to an active part unit of a transducer and a transducer.
- the invention relates to voltage transformers designed to measure electrical voltages and / or protect against high electrical voltages and transducers which are a combination of such voltage transformers with current transformers for measuring electrical currents and / or for protection against high electrical currents.
- Such transducers such. B. from the EP 2887368 A1 known, transform electrical voltages and currents according to the principle of a transformer and have to an active part usually with a transducer core and two different transducer windings.
- the invention has for its object to provide an improved active part unit of a transducer and an improved transducer.
- the object is achieved with respect to the active part unit by the features of claim 1 and with respect to the transducer by the features of claim 9.
- An active part unit of a transducer comprises a transducer core, a pressing frame which abuts at least two opposing surfaces of the transducer core, a winding tube surrounding a core portion of the transducer core and carrying at least one transducer winding, and at least one anti-rotation device comprising a the winding tube with the pressing frame connecting curing compound comprises.
- a curing composition is understood here a mass of a flowable or moldable material that cures by itself or by an external influence.
- each anti-rotation device comprises a press frame pocket formed in the press frame into which an edge region of the winding tube protrudes and in which this edge region of the winding tube is fixed by curing compound which surrounds the edge region of the winding tube in the press frame pocket.
- This embodiment of the invention advantageously makes it possible to realize an anti-twist device at a location predetermined by a press frame pocket by introducing hardening compound into the press frame pocket.
- each press frame pocket is formed as a recess in the press frame, which is bounded on the outside by a pocket collar.
- each pocket collar has a rounded surface.
- the border of a press frame pocket by a pocket collar limits the press frame pocket and provides a level of filling for the curing mass.
- the rounding of the surface of the pocket collar advantageously avoids edges at which high field strengths of electric fields can arise, which can lead to electrical discharges.
- a further embodiment of the aforementioned embodiments of the invention provides that each edge region of the winding tube projecting into a press frame pocket has at least one pipe recess.
- each Wickelrohrende of the winding tube is connected by at least one rotation with the press frame, and / or that at least one Wickelrohrende the winding tube is connected by two anti-rotation with the press frame.
- the stability of the connection of the winding tube to the pressing frame is increased by multiple, both-sided and / or one-sided anti-rotation.
- the curing compound is, for example, a cast resin or two-component plastic.
- Casting resins and two-component plastics are particularly suitable as curing compounds due to their castability, stability after curing and commercial availability.
- An inventive transducer has an active part unit according to the invention with the advantages already mentioned.
- FIG. 1 shows a sectional view of a transducer 1.
- the transducer 1 is designed as a gas-insulated combined voltage and current transformer.
- the transducer 1 comprises a transducer housing 3 with a housing head 5, a housing bottom 7 and an insulator 9 extending between the housing head 5 and the housing bottom 7.
- the housing head 5 is formed as a bottle-like hollow body, which tapers conically to an annular housing head end 11 which has a housing Casing head opening surrounds, narrows.
- the insulator 9 connects.
- the insulator 9 is substantially formed as a tube having on its outer side insulator ribs 13 which extend annularly about a longitudinal axis of the insulator 9.
- the housing bottom 7 closes an end facing away from the housing head 5 of the insulator 9.
- the transducer housing 3 is gas-tight for receiving an insulating gas such as sulfur hexafluoride.
- the housing head 5 has a pressure relief valve 15, can be removed through the insulating gas from the transducer housing 3, when the pressure in the transducer housing 3 exceeds a threshold pressure.
- a conductor bushing 17 is arranged, are guided by the electrical conductors from the interior of the transducer housing 3 to the outside.
- a terminal box 19 is arranged for contacting the guided through the conductor bushing 17 conductor.
- an active part unit 21 according to the invention as a voltage converter and a current transformer unit 23 are arranged, wherein the current transformer unit 23 is arranged between the active part unit 21 and the insulator 9.
- the active part unit 21 will be described below with reference to FIGS. 2 to 8 described in more detail.
- the current transformer unit 23 comprises a busbar designed as a primary conductor 25 with outside the Meßwandlergepuruses 3 arranged primary conductor terminals 27 and a ring around the primary conductor 25 extending, known per se and therefore not shown in detail current transformer winding assembly 29 with a secondary current transformer winding.
- a secondary transducer winding 41 of the active part unit 21 and the secondary current transformer winding of the current transformer winding assembly 29 are respectively connected to terminals of the terminal box 19 via connecting leads (not shown), the connecting leads through tube-like shielding sleeves 31 disposed in the transducer housing 3 and through the leadthrough 17 to the terminal box 19 are guided.
- FIG. 2 shows the active part unit 21 of the transducer 1. It shows FIG. 2 a perspective view and FIG. 3 shows a perspective sectional view of the active part unit 21 of the transducer. 1
- the active part unit 21 includes a transducer core 33, a press frame 35, a winding tube 37, a primary transducer coil 39, the secondary transducer coil 41, a rim electrode 43, and four anti-rotation locks 45.
- the Meßwandlerkern 33 is formed as an annular laminated core, which consists of stacked laminations, which are pressed by the pressing frame 35 together.
- the pressing frame 35 is U-shaped with two mutually parallel legs and a leg connecting the two legs formed.
- the pressing frame 35 consists of two pressing frame halves 35.1, 35.2, each forming one half of each leg and the leg connection and lie on different sides of a plane of symmetry, in the press frame halves 35.1, 35.2 abut each other.
- the leg ends of each leg are for mounting the press frame 35 formed in the housing head 5 of the transducer 1.
- each clamping element 51 is rod-shaped and has at least one guided by a Pressframe half 35.1, 35.2 end to which a nut 53 for pressing the Pressframe half 35.1, 35.2 is screwed to the Meßwandlerkern 33.
- the winding tube 37 surrounds a core portion 34 of the Meßwandlerkerns 33, which extends between the legs of the pressing frame 35 and by frame recesses 55 in the Pressrahmenhworthn 35.1, 35.2.
- the winding tube 37 carries the primary transducer coil 39 surrounding a central portion of the coil tube 37, the rim electrode 43 surrounding the primary transducer coil 39, and the secondary transducer coil 41 surrounding the rim electrode 43.
- the rim electrode 43 has an electrode center portion 57 formed as a hollow circular cylinder and two shielding collars 59 facing each other. Each shielding collar 59 forms one end of the rim electrode 43 and is designed to deflect electrical fields relative to the electrode center section 57 outwardly bent.
- the rim electrode 43 consists of two similar electrode halves 43.1, 43.2 (see FIG. 4 ) each forming one half of the electrode center portion 57 and each shielding collar 59.
- the anti-rotation 45 connect the winding tube 37 with the press frame 35 and prevent rotation of the winding tube 37 about its longitudinal axis.
- each end of the winding tube 37 is connected to each of the two pressing frame halves 35.1, 35.2 by a respective anti-rotation 45, so that the winding tube 37 is connected by a total of four anti-rotation 45 with the pressing frame 35.
- the anti-rotation 45 will be described below with reference to the FIGS. 4 to 8 described in more detail.
- FIG. 4 shows a perspective view of the formed by the winding tube 37, the transducer windings 39, 41 and the electrode halves 43.1, 43.2 of the rim electrode 43 winding arrangement of the active part unit 21.
- the winding tube 37 has in the areas of anti-rotation 45 each have two pipe recesses 61.
- FIGS. 5 to 7 show various perspective sectional views of the press frame 35 and winding tube 37 of the active part unit 21 in the region of a rotation 45th
- Each anti-rotation device 45 comprises a press frame pocket 63 formed in the press frame 35 into which an edge region of the winding tube 37, which has two pipe recesses 61, protrudes.
- the press frame pocket 63 is formed as a recess in the press frame 35 at the edge of a frame recess 55 through which the core portion 34 passes.
- the recess is bounded on the outside, ie on a side remote from the core section 34, by a pocket collar 65, and on the inside, ie on the side facing the core section 34, by a recess edge 67 which also borders the frame recess 55.
- the pocket collar 65 is designed curved, has two collar ends 69, which abut respectively on the winding tube 37, and is spaced between the collar ends 69 of the winding tube 37.
- each press frame pocket 63 is formed in the region of a Pressrahmenverdickung 71, which is used to stiffen the pressing frame 35 U-shaped along the two legs and the Leg connection of the pressing frame 35 in the Pressrahmenhtre 35.1, 35.2, in which the press frame pocket 63 is located, runs.
- a press frame pocket 63 is filled with curing compound 73, for example with a casting resin or a curing two-component plastic, so that the edge region of the winding tube 37 protruding into the press frame pocket 63 after hardening of the curing compound 73 in the press frame pocket 63 is fixed.
- FIG. 8 shows a perspective view of the press frame 35 and winding tube 37 of the active part unit 21 in the region of an anti-rotation 45, the press frame pocket 63 is filled with curing compound 73.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Transformers For Measuring Instruments (AREA)
- Measuring Fluid Pressure (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
Die Erfindung betrifft eine Aktivteileinheit eines Messwandlers und einen Messwandler.The invention relates to an active part unit of a transducer and a transducer.
Genauer betrifft die Erfindung als Spannungswandler ausgebildete Messwandler zum Messen elektrischer Spannungen und/oder zum Schutz vor hohen elektrischen Spannungen sowie Messwandler, die eine Kombination derartiger Spannungswandler mit Stromwandlern zum Messen elektrischer Ströme und/oder zum Schutz vor hohen elektrischen Strömen sind.More particularly, the invention relates to voltage transformers designed to measure electrical voltages and / or protect against high electrical voltages and transducers which are a combination of such voltage transformers with current transformers for measuring electrical currents and / or for protection against high electrical currents.
Derartige Messwandler, wie z. B. aus der
Der Erfindung liegt die Aufgabe zugrunde, eine verbesserte Aktivteileinheit eines Messwandlers und einen verbesserten Messwandler anzugeben.The invention has for its object to provide an improved active part unit of a transducer and an improved transducer.
Die Aufgabe wird erfindungsgemäß hinsichtlich der Aktivteileinheit durch die Merkmale des Anspruchs 1 und hinsichtlich des Messwandlers durch die Merkmale des Anspruchs 9 gelöst.The object is achieved with respect to the active part unit by the features of
Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.
Eine erfindungsgemäße Aktivteileinheit eines Messwandlers umfasst einen Messwandlerkern, einen Pressrahmen, der wenigstens an zwei sich gegenüberliegenden Oberflächen des Messwandlerkerns anliegt, ein Wickelrohr, das einen Kernabschnitt des Messwandlerkerns umgibt und wenigstens eine Messwandlerwicklung trägt, und wenigstens eine Verdrehsicherung, die eine das Wickelrohr mit dem Pressrahmen verbindende Aushärtungsmasse umfasst.An active part unit of a transducer according to the invention comprises a transducer core, a pressing frame which abuts at least two opposing surfaces of the transducer core, a winding tube surrounding a core portion of the transducer core and carrying at least one transducer winding, and at least one anti-rotation device comprising a the winding tube with the pressing frame connecting curing compound comprises.
Unter einer Aushärtungsmasse wird hier eine Masse aus einem fließfähigen oder formbaren Material verstanden, das von selbst oder durch eine äußere Beeinflussung aushärtet.Under a curing composition is understood here a mass of a flowable or moldable material that cures by itself or by an external influence.
Durch die wenigstens eine Verdrehsicherung werden Bewegungen des Wickelrohrs und von ihm getragener Bauteile relativ zu dem Pressrahmen verhindert. Dadurch werden vorteilhaft Schädigungen von Komponenten des Messwandlers infolge solcher Bewegungen vermieden. Die Realisierung einer Verdrehsicherung mit einer das Wickelrohr mit dem Pressrahmen verbindenden Aushärtungsmasse vermeidet vorteilhaft weitere Bauteile zur Vermeidung von Verdrehungen des Wickelrohrs, vereinfacht die Montage der Aktivteileinheit und vermeidet aufwändige und kostenintensive Bearbeitungen von Bauteilen. Ferner können Fertigungstoleranzen der Bauteile der Aktivteileinheit durch eine Aushärtungsmasse in einfacher Weise ausgeglichen werden. Außerdem kann die Aushärtung der Aushärtungsmasse beispielsweise nach dem Abschluss von Montagearbeiten in einem Zwischenlagerungszustand der Aktivteileinheit oder des Messwandlers erfolgen, ohne weitere Ressourcen zu beanspruchen.By the at least one anti-rotation movements of the winding tube and components supported by it are prevented relative to the pressing frame. As a result, damage to components of the transducer due to such movements are advantageously avoided. The realization of an anti-rotation device with a winding tube connecting the winding tube with the pressing frame advantageously avoids further components to prevent twisting of the winding tube, simplifies the assembly of the active part unit and avoids complex and costly machining of components. Furthermore, manufacturing tolerances of the components of the active part unit can be compensated by a curing mass in a simple manner. In addition, the curing of the curing compound, for example, after the completion of assembly work in an intermediate storage state of the active part unit or the transducer can be done without further resources.
Eine Ausgestaltung der Erfindung sieht vor, dass jede Verdrehsicherung eine in dem Pressrahmen gebildete Pressrahmentasche umfasst, in die ein Randbereich des Wickelrohrs hineinragt und in der dieser Randbereich des Wickelrohrs durch Aushärtungsmasse, die den Randbereich des Wickelrohrs in der Pressrahmentasche umgibt, fixiert ist.An embodiment of the invention provides that each anti-rotation device comprises a press frame pocket formed in the press frame into which an edge region of the winding tube protrudes and in which this edge region of the winding tube is fixed by curing compound which surrounds the edge region of the winding tube in the press frame pocket.
Diese Ausgestaltung der Erfindung ermöglicht vorteilhaft, eine Verdrehsicherung an einem durch eine Pressrahmentasche vorgegebenen Ort durch Einbringen von Aushärtungsmasse in die Pressrahmentasche zu realisieren.This embodiment of the invention advantageously makes it possible to realize an anti-twist device at a location predetermined by a press frame pocket by introducing hardening compound into the press frame pocket.
Beispielsweise ist jede Pressrahmentasche als eine Ausnehmung in dem Pressrahmen ausgebildet, die außenseitig von einem Taschenkragen berandet wird. Vorzugsweise weist dabei jeder Taschenkragen eine abgerundete Oberfläche auf.For example, each press frame pocket is formed as a recess in the press frame, which is bounded on the outside by a pocket collar. Preferably, each pocket collar has a rounded surface.
Die Berandung einer Pressrahmentasche durch einen Taschenkragen begrenzt die Pressrahmentasche und gibt eine Füllhöhe für die Aushärtungsmasse vor. Die Abrundung der Oberfläche des Taschenkragens vermeidet vorteilhaft Kanten, an denen hohe Feldstärken elektrischer Felder entstehen können, die zu elektrischen Entladungen führen können.The border of a press frame pocket by a pocket collar limits the press frame pocket and provides a level of filling for the curing mass. The rounding of the surface of the pocket collar advantageously avoids edges at which high field strengths of electric fields can arise, which can lead to electrical discharges.
Eine Weitergestaltung der vorgenannten Ausgestaltungen der Erfindung sieht vor, dass jeder in eine Pressrahmentasche hineinragende Randbereich des Wickelrohrs wenigstens eine Rohraussparung aufweist.A further embodiment of the aforementioned embodiments of the invention provides that each edge region of the winding tube projecting into a press frame pocket has at least one pipe recess.
Durch die Rohraussparungen wird die von Aushärtungsmasse umgebene Oberfläche des Wickelrohrs vergrößert und damit die Stabilität der Verdrehsicherung erhöht.By Rohraussparungen surrounded by curing compound surface of the winding tube is increased and thus increases the stability of the rotation.
Weitere Ausgestaltungen der Erfindung sehen vor, dass jedes Wickelrohrende des Wickelrohrs durch wenigstens eine Verdrehsicherung mit dem Pressrahmen verbunden ist, und/oder dass wenigstens ein Wickelrohrende des Wickelrohrs durch zwei Verdrehsicherungen mit dem Pressrahmen verbunden ist.Further embodiments of the invention provide that each Wickelrohrende of the winding tube is connected by at least one rotation with the press frame, and / or that at least one Wickelrohrende the winding tube is connected by two anti-rotation with the press frame.
Dadurch wird die Stabilität der Verbindung des Wickelrohrs mit dem Pressrahmen durch mehrfache, beidseitige und/oder einseitige Verdrehsicherungen erhöht.As a result, the stability of the connection of the winding tube to the pressing frame is increased by multiple, both-sided and / or one-sided anti-rotation.
Die Aushärtungsmasse ist beispielsweise ein Gießharz oder Zweikomponenten-Kunststoff.The curing compound is, for example, a cast resin or two-component plastic.
Gießharze und Zweikomponenten-Kunststoffe eignen sich insbesondere aufgrund ihrer Vergießfähigkeit, Stabilität nach dem Aushärten und kommerziellen Verfügbarkeit als Aushärtungsmassen.Casting resins and two-component plastics are particularly suitable as curing compounds due to their castability, stability after curing and commercial availability.
Ein erfindungsgemäßer Messwandler weist eine erfindungsgemäße Aktivteileinheit mit den bereits genannten Vorteilen auf.An inventive transducer has an active part unit according to the invention with the advantages already mentioned.
Die oben beschriebenen Eigenschaften, Merkmale und Vorteile dieser Erfindung sowie die Art und Weise, wie diese erreicht werden, werden klarer und deutlicher verständlich im Zusammenhang mit der folgenden Beschreibung von Ausführungsbeispielen, die im Zusammenhang mit den Zeichnungen näher erläutert werden. Dabei zeigen:
- FIG 1
- eine Schnittdarstellung eines Messwandlers,
- FIG 2
- eine perspektivische Darstellung einer Aktivteileinheit eines Messwandlers,
- FIG 3
- eine perspektivische Schnittdarstellung einer Aktivteileinheit eines Messwandlers,
- FIG 4
- eine perspektivische Darstellung einer Wicklungsanordnung einer Aktivteileinheit eines Messwandlers,
- FIG 5
- eine erste perspektivische Schnittdarstellung eines Pressrahmens und Wickelrohrs einer Aktivteileinheit eines Messwandlers im Bereich einer Verdrehsicherung,
- FIG 6
- eine zweite perspektivische Schnittdarstellung eines Pressrahmens und Wickelrohrs einer Aktivteileinheit eines Messwandlers im Bereich einer Verdrehsicherung,
- FIG 7
- eine dritte perspektivische Schnittdarstellung eines Pressrahmens und Wickelrohrs einer Aktivteileinheit eines Messwandlers im Bereich einer Verdrehsicherung, und
- FIG 8
- eine perspektivische Darstellung eines Pressrahmens und Wickelrohrs einer Aktivteileinheit eines Messwandlers im Bereich einer Verdrehsicherung.
- FIG. 1
- a sectional view of a transducer,
- FIG. 2
- a perspective view of an active part unit of a transducer,
- FIG. 3
- a perspective sectional view of an active part unit of a transducer,
- FIG. 4
- a perspective view of a winding arrangement of an active part unit of a transducer,
- FIG. 5
- 1 is a first perspective sectional view of a pressing frame and winding tube of an active part unit of a measuring transducer in the region of an anti-twist device,
- FIG. 6
- 2 shows a perspective perspective view of a press frame and winding tube of an active part unit of a measuring transducer in the region of an anti-twist device,
- FIG. 7
- a third perspective sectional view of a pressing frame and winding tube of an active part unit of a transducer in the region of rotation, and
- FIG. 8
- a perspective view of a pressing frame and winding tube of an active part unit of a transducer in the region of a rotation.
Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen.Corresponding parts are provided in all figures with the same reference numerals.
Der Messwandler 1 umfasst ein Messwandlergehäuse 3 mit einem Gehäusekopf 5, einem Gehäuseboden 7 und einem zwischen dem Gehäusekopf 5 und dem Gehäuseboden 7 verlaufenden Isolator 9. Der Gehäusekopf 5 ist als ein flaschenartiger Hohlkörper ausgebildet, der sich konisch zu einem ringförmigen Gehäusekopfende 11, das eine Gehäusekopföffnung umgibt, verengt. An das Gehäusekopfende 11 schließt sich der Isolator 9 an. Der Isolator 9 ist im Wesentlichen als ein Rohr ausgebildet, das an seiner Außenseite Isolatorrippen 13 aufweist, die ringförmig um eine Längsachse des Isolators 9 verlaufen. Der Gehäuseboden 7 verschließt ein von dem Gehäusekopf 5 abgewandtes Ende des Isolators 9. Das Messwandlergehäuse 3 ist zur Aufnahme eines Isoliergases wie beispielsweise Schwefelhexafluorid gasdicht ausgebildet. Der Gehäusekopf 5 weist ein Druckentlastungsventil 15 auf, durch das Isoliergas aus dem Messwandlergehäuse 3 abgeführt werden kann, wenn der Druck in dem Messwandlergehäuse 3 einen Druckschwellenwert überschreitet. An dem Gehäuseboden 7 ist eine Leiterdurchführung 17 angeordnet, durch die elektrische Leiter aus dem Innern des Messwandlergehäuses 3 nach außen geführt werden. An der Leiterdurchführung 17 ist ein Klemmenkasten 19 zum Kontaktieren der durch die Leiterdurchführung 17 geführten Leiter angeordnet.The
In dem Gehäusekopf 5 sind eine erfindungsgemäße Aktivteileinheit 21 als Spannungswandler und eine Stromwandlereinheit 23 angeordnet, wobei die Stromwandlereinheit 23 zwischen der Aktivteileinheit 21 und dem Isolator 9 angeordnet ist.In the housing head 5, an
Die Aktivteileinheit 21 wird unten anhand der
Eine sekundäre Messwandlerwicklung 41 der Aktivteileinheit 21 und die sekundäre Stromwandlerwicklung der Stromwandlerwicklungsanordnung 29 sind über (nicht dargestellte) Verbindungsleitungen jeweils mit Anschlüssen des Klemmenkastens 19 verbunden, wobei die Verbindungsleitungen durch in dem Messwandlergehäuse 3 angeordnete rohrartige Abschirmhülsen 31 und durch die Leiterdurchführung 17 zu dem Klemmenkasten 19 geführt sind.A secondary transducer winding 41 of the
Die
Die Aktivteileinheit 21 umfasst einen Messwandlerkern 33, einen Pressrahmen 35, ein Wickelrohr 37, eine primäre Messwandlerwicklung 39, die sekundäre Messwandlerwicklung 41, eine Felgenelektrode 43 und vier Verdrehsicherungen 45.The
Der Messwandlerkern 33 ist als ein ringförmiges Blechpaket ausgebildet, das aus übereinander geschichteten Blechlamellen besteht, die durch den Pressrahmen 35 aneinander gedrückt werden.The
Der Pressrahmen 35 ist U-förmig mit zwei parallel zueinander verlaufenden Schenkeln und einer die beiden Schenkel verbindenden Schenkelverbindung ausgebildet. Der Pressrahmen 35 besteht aus zwei Pressrahmenhälften 35.1, 35.2, die jeweils eine Hälfte jedes Schenkels und der Schenkelverbindung bilden und auf verschiedenen Seiten einer Symmetrieebene liegen, in der Pressrahmenhälften 35.1, 35.2 aneinander anliegen. Die Schenkelenden jedes Schenkels sind zur Befestigung des Pressrahmens 35 in dem Gehäusekopf 5 des Messwandlers 1 ausgebildet. In dem dargestellten Ausführungsbeispiel weist jede Pressrahmenhälfte 35.1, 35.2 dazu an jedem Schenkelende eine Verbindungsöffnung 47 auf, durch die ein Verbindungselement, beispielsweise eine Schraube, zur Befestigung des Schenkelendes an einer korrespondierenden Rahmenhalterung 49 des Gehäusekopfes 5 (siehe
Zur Befestigung des Pressrahmens 35 an dem Messwandlerkern 33 und zum Verspannen der Blechlamellen des Messwandlerkerns 33 sind mehrere Spannelemente 51 durch den Messwandlerkern 33 und die beiden Pressrahmenhälften 35.1, 35.2 geführt. Dabei ist jedes Spannelement 51 stabartig ausgebildet und weist wenigstens ein durch eine Pressrahmenhälfte 35.1, 35.2 geführtes Ende auf, auf das eine Schraubenmutter 53 zum Anpressen der Pressrahmenhälfte 35.1, 35.2 an den Messwandlerkern 33 geschraubt ist.To fix the
Das Wickelrohr 37 umgibt einen Kernabschnitt 34 des Messwandlerkerns 33, der zwischen den Schenkeln des Pressrahmens 35 und durch Rahmenaussparungen 55 in den Pressrahmenhälften 35.1, 35.2 verläuft. Das Wickelrohr 37 trägt die primäre Messwandlerwicklung 39, die einen Mittelabschnitt des Wickelrohrs 37 umgibt, die Felgenelektrode 43, die die primäre Messwandlerwicklung 39 umgibt, und die sekundäre Messwandlerwicklung 41, die die Felgenelektrode 43 umgibt. Die Felgenelektrode 43 weist einen Elektrodenmittelabschnitt 57, der als ein hohler Kreiszylinder ausgebildet ist, und zwei sich gegenüber liegende Abschirmkragen 59 auf. Jeder Abschirmkragen 59 bildet ein Ende der Felgenelektrode 43 und ist zur Abschirmung elektrischer Felder gegenüber dem Elektrodenmittelabschnitt 57 nach außen umgebogen gestaltet. Dabei besteht die Felgenelektrode 43 aus zwei gleichartigen Elektrodenhälften 43.1, 43.2 (siehe
Die Verdrehsicherungen 45 verbinden das Wickelrohr 37 mit dem Pressrahmen 35 und verhindern eine Drehung des Wickelrohrs 37 um seine Längsachse. Dabei ist jedes Ende des Wickelrohrs 37 mit jeder der beiden Pressrahmenhälften 35.1, 35.2 durch jeweils eine Verdrehsicherung 45 verbunden, so dass das Wickelrohr 37 durch insgesamt vier Verdrehsicherungen 45 mit dem Pressrahmen 35 verbunden ist. Die Verdrehsicherungen 45 werden im Folgenden anhand der
Die
Jede Verdrehsicherung 45 umfasst eine in dem Pressrahmen 35 gebildete Pressrahmentasche 63, in die ein Randbereich des Wickelrohrs 37, der zwei Rohraussparungen 61 aufweist, hineinragt. Die Pressrahmentasche 63 ist als eine Ausnehmung in dem Pressrahmen 35 am Rand einer Rahmenaussparung 55, durch die der Kernabschnitt 34 verläuft, ausgebildet. Die Ausnehmung wird außenseitig, d. h. auf einer von dem Kernabschnitt 34 abgewandten Seite, von einem Taschenkragen 65, und innenseitig, d. h. auf der dem Kernabschnitt 34 zugewandten Seite, von einem auch die Rahmenaussparung 55 berandenden Aussparungsrand 67 berandet. Der Taschenkragen 65 ist gebogen gestaltet, weist zwei Kragenenden 69 auf, die jeweils an dem Wickelrohr 37 anliegen, und ist zwischen den Kragenenden 69 von dem Wickelrohr 37 beabstandet. Im dargestellten Ausführungsbeispiel ist jede Pressrahmentasche 63 im Bereich einer Pressrahmenverdickung 71 ausgebildet, die zur Versteifung des Pressrahmens 35 U-förmig entlang der beiden Schenkel und der Schenkelverbindung des Pressrahmens 35 in der Pressrahmenhälfte 35.1, 35.2, in der sich die Pressrahmentasche 63 befindet, verläuft.Each
Um eine Verdrehsicherung 45 zu bilden, wird eine Pressrahmentasche 63 mit Aushärtungsmasse 73, beispielsweise mit einem Gießharz oder einem aushärtenden Zweikomponenten-Kunststoff, befüllt, so dass der in die Pressrahmentasche 63 hineinragende Randbereich des Wickelrohrs 37 nach dem Aushärten der Aushärtungsmasse 73 in der Pressrahmentasche 63 fixiert ist.In order to form an
Obwohl die Erfindung im Detail durch bevorzugte Ausführungsbeispiele näher illustriert und beschrieben wurde, so ist die Erfindung nicht durch die offenbarten Beispiele eingeschränkt und andere Variationen können vom Fachmann hieraus abgeleitet werden, ohne den Schutzumfang der Erfindung zu verlassen.While the invention has been further illustrated and described in detail by way of preferred embodiments, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention.
- 11
- Messwandlertransducers
- 33
- MesswandlergehäuseTransducer housing
- 55
- Gehäusekopfhousing head
- 77
- Gehäusebodencaseback
- 99
- Isolatorinsulator
- 1111
- GehäusekopfendeHousing head end
- 1313
- Isolatorrippeinsulator rib
- 1515
- DruckentlastungsventilPressure relief valve
- 1717
- LeiterdurchführungConductor Bushing
- 1919
- Klemmenkastenterminal box
- 2121
- AktivteileinheitActive subunit
- 2323
- StromwandlereinheitCurrent transformer unit
- 2525
- Primärleiterprimary conductor
- 2727
- PrimärleiteranschlussPrimary wire connection
- 2929
- StromwandlerwicklungsanordnungCurrent transformer winding arrangement
- 3131
- Abschirmhülseshielding
- 3333
- MesswandlerkernTransducer core
- 3434
- Kernabschnittcore section
- 3535
- Pressrahmenpress frame
- 35.1, 35.235.1, 35.2
- PressrahmenhälftePress frame half
- 3737
- Wickelrohrwinding tube
- 39, 4139, 41
- MesswandlerwicklungTransducers winding
- 4343
- Felgenelektroderims electrode
- 43.1, 43.243.1, 43.2
- Elektrodenhälfteelectrodes half
- 4545
- Verdrehsicherungtwist
- 4747
- Verbindungsöffnungconnecting opening
- 4949
- Rahmenhalterungframe bracket
- 5151
- Spannelementclamping element
- 5353
- Schraubenmutternut
- 5555
- Rahmenaussparungframe recess
- 5757
- ElektrodenmittelabschnittElectrode means section
- 5959
- Abschirmkragenshielding collar
- 6161
- Rohraussparungpipe recess
- 6363
- PressrahmentaschePress Frame Bag
- 6565
- Taschenkragenbag collar
- 6767
- Aussparungsrandrecess edge
- 6969
- Kragenendecollar end
- 7171
- PressrahmenverdickungPress frame thickening
- 7373
- AushärtungsmasseAushärtungsmasse
Claims (9)
- Active part unit (21) of a measurement transducer (1), the active part unit (21) comprising- a measurement transducer core (33),- a press frame (35) which bears at least against two surfaces of the measurement transducer core (33) which are situated opposite one another,- a winding tube (37) which surrounds a core section (34) of the measurement transducer core (33) and supports at least one measurement transducer winding (39, 41),- and at least one rotation-prevention means (45) which comprises a curing compound (73) which connects the winding tube (37) to the press frame (35).
- Active part unit (21) according to Claim 1,
characterized in that
each rotation-prevention means (45) comprises a press frame pocket (63) which is formed in the press frame (35) and into which an edge region of the winding tube (37) protrudes and in which this edge region of the winding tube (37) is fixed by curing compound (73) which surrounds the edge region of the winding tube (37) in the press frame pocket (63). - Active part unit (21) according to Claim 2,
characterized in that
each press frame pocket (63) is in the form of a recess in the press frame (35), which recess is bordered on the outside by a pocket collar (65). - Active part unit (21) according to Claim 3,
characterized in that
each pocket collar (65) has a rounded surface. - Active part unit (21) according to one of Claims 2 to 4,
characterized in that
each edge region of the winding tube (37) which projects into a press frame pocket (63) has at least one tube cutout (61). - Active part unit (21) according to one of the preceding claims,
characterized in that
each winding tube end of the winding tube (37) is connected to the press frame (35) by at least one rotation-prevention means (45) . - Active part unit (21) according to one of the preceding claims,
characterized in that
at least one winding tube end of the winding tube (37) is connected to the press frame (35) by two rotation-prevention means (45). - Active part unit (21) according to one of the preceding claims,
characterized in that
the curing compound (73) is a cast resin or two-component plastic. - Measurement transducer (1) comprising an active part unit (21) according to one of the preceding claims.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HRP20191161TT HRP20191161T1 (en) | 2015-09-03 | 2019-06-26 | Active part unit of a measurement transducer, and measurement transducer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015216861.1A DE102015216861A1 (en) | 2015-09-03 | 2015-09-03 | Active part unit of a transducer and transducer |
PCT/EP2016/068494 WO2017036713A1 (en) | 2015-09-03 | 2016-08-03 | Active part unit of a measurement transducer, and measurement transducer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3320551A1 EP3320551A1 (en) | 2018-05-16 |
EP3320551B1 true EP3320551B1 (en) | 2019-04-17 |
Family
ID=56609863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16747887.4A Active EP3320551B1 (en) | 2015-09-03 | 2016-08-03 | Active part unit of a measurement transducer, and measurement transducer |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP3320551B1 (en) |
CN (1) | CN107924759B (en) |
DE (1) | DE102015216861A1 (en) |
ES (1) | ES2736425T3 (en) |
HR (1) | HRP20191161T1 (en) |
WO (1) | WO2017036713A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020201100A1 (en) | 2020-01-30 | 2021-08-05 | Siemens Aktiengesellschaft | Voltage converter |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1051961B (en) * | 1956-08-23 | 1959-03-05 | Messwandler Bau Gmbh | Cast resin-insulated transducer |
JP3146947B2 (en) * | 1995-09-27 | 2001-03-19 | 日新電機株式会社 | Instrument transformer |
DE10013143C2 (en) * | 2000-03-17 | 2002-06-27 | Aeg Niederspannungstech Gmbh | transducers |
JP2002124424A (en) * | 2000-10-13 | 2002-04-26 | Toshiba Corp | Method of mounting transformer for measuring instrument and transformer for measuring instrument |
CN201364805Y (en) * | 2009-02-27 | 2009-12-16 | 日新电机株式会社 | Gas-insulated instrument transformer |
DE102010047431A1 (en) * | 2010-10-04 | 2012-04-05 | Robert Bosch Gmbh | Axial piston machine with a control plate inserted into a groove of a housing part |
DE102012202572A1 (en) * | 2012-02-20 | 2013-08-22 | Siemens Aktiengesellschaft | Transducer housing assembly |
PL2800113T3 (en) * | 2013-04-29 | 2016-09-30 | High voltage dry instrument transformer | |
EP2887368B1 (en) * | 2013-12-20 | 2018-04-11 | Siemens Aktiengesellschaft | Gas-insulated transducer with a separating device |
CN204315380U (en) * | 2014-12-02 | 2015-05-06 | 广东电网有限责任公司东莞供电局 | A kind of open-close type current transformer |
-
2015
- 2015-09-03 DE DE102015216861.1A patent/DE102015216861A1/en not_active Withdrawn
-
2016
- 2016-08-03 WO PCT/EP2016/068494 patent/WO2017036713A1/en unknown
- 2016-08-03 CN CN201680050999.8A patent/CN107924759B/en active Active
- 2016-08-03 EP EP16747887.4A patent/EP3320551B1/en active Active
- 2016-08-03 ES ES16747887T patent/ES2736425T3/en active Active
-
2019
- 2019-06-26 HR HRP20191161TT patent/HRP20191161T1/en unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
WO2017036713A1 (en) | 2017-03-09 |
CN107924759B (en) | 2019-09-13 |
DE102015216861A1 (en) | 2017-03-09 |
CN107924759A (en) | 2018-04-17 |
EP3320551A1 (en) | 2018-05-16 |
HRP20191161T1 (en) | 2019-10-04 |
ES2736425T3 (en) | 2019-12-30 |
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