EP3320551B1 - Aktivteileinheit eines messwandlers und messwandler - Google Patents

Aktivteileinheit eines messwandlers und messwandler Download PDF

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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.)
Active
Application number
EP16747887.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3320551A1 (de
Inventor
Sebastian BAEHR
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP3320551A1 publication Critical patent/EP3320551A1/de
Application granted granted Critical
Publication of EP3320551B1 publication Critical patent/EP3320551B1/de
Priority to HRP20191161TT priority Critical patent/HRP20191161T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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.

Landscapes

  • 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)
EP16747887.4A 2015-09-03 2016-08-03 Aktivteileinheit eines messwandlers und messwandler Active EP3320551B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HRP20191161TT HRP20191161T1 (hr) 2015-09-03 2019-06-26 Jedinica aktivnog dijela mjernog transduktora i mjerni transduktor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015216861.1A DE102015216861A1 (de) 2015-09-03 2015-09-03 Aktivteileinheit eines Messwandlers und Messwandler
PCT/EP2016/068494 WO2017036713A1 (de) 2015-09-03 2016-08-03 Aktivteileinheit eines messwandlers und messwandler

Publications (2)

Publication Number Publication Date
EP3320551A1 EP3320551A1 (de) 2018-05-16
EP3320551B1 true EP3320551B1 (de) 2019-04-17

Family

ID=56609863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16747887.4A Active EP3320551B1 (de) 2015-09-03 2016-08-03 Aktivteileinheit eines messwandlers und messwandler

Country Status (6)

Country Link
EP (1) EP3320551B1 (zh)
CN (1) CN107924759B (zh)
DE (1) DE102015216861A1 (zh)
ES (1) ES2736425T3 (zh)
HR (1) HRP20191161T1 (zh)
WO (1) WO2017036713A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020201100A1 (de) 2020-01-30 2021-08-05 Siemens Aktiengesellschaft Spannungswandler

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1051961B (de) * 1956-08-23 1959-03-05 Messwandler Bau Gmbh Giessharzisolierter Messwandler
JP3146947B2 (ja) * 1995-09-27 2001-03-19 日新電機株式会社 計器用変圧器
DE10013143C2 (de) * 2000-03-17 2002-06-27 Aeg Niederspannungstech Gmbh Messwandler
JP2002124424A (ja) * 2000-10-13 2002-04-26 Toshiba Corp 計器用変圧器の取付方法及び計器用変圧器
CN201364805Y (zh) * 2009-02-27 2009-12-16 日新电机株式会社 气体绝缘互感器
DE102010047431A1 (de) * 2010-10-04 2012-04-05 Robert Bosch Gmbh Axialkolbenmaschine mit einer in eine Nut eines Gehäuseteils eingesetzten Steuerplatte
DE102012202572A1 (de) * 2012-02-20 2013-08-22 Siemens Aktiengesellschaft Messwandlergehäuseanordnung
PL2800113T3 (pl) * 2013-04-29 2016-09-30 Suchy przekładnik WN
EP2887368B1 (de) * 2013-12-20 2018-04-11 Siemens Aktiengesellschaft Gasisolierter Messwandler mit Trennvorrichtung
CN204315380U (zh) * 2014-12-02 2015-05-06 广东电网有限责任公司东莞供电局 一种开合式电流互感器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2017036713A1 (de) 2017-03-09
CN107924759B (zh) 2019-09-13
DE102015216861A1 (de) 2017-03-09
CN107924759A (zh) 2018-04-17
EP3320551A1 (de) 2018-05-16
HRP20191161T1 (hr) 2019-10-04
ES2736425T3 (es) 2019-12-30

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