EP1114429B1 - Transformateur de courant a tolerance vis-a-vis du courant continu - Google Patents

Transformateur de courant a tolerance vis-a-vis du courant continu Download PDF

Info

Publication number
EP1114429B1
EP1114429B1 EP99969529A EP99969529A EP1114429B1 EP 1114429 B1 EP1114429 B1 EP 1114429B1 EP 99969529 A EP99969529 A EP 99969529A EP 99969529 A EP99969529 A EP 99969529A EP 1114429 B1 EP1114429 B1 EP 1114429B1
Authority
EP
European Patent Office
Prior art keywords
current
current transformer
core
transformer according
permeability
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.)
Expired - Lifetime
Application number
EP99969529A
Other languages
German (de)
English (en)
Other versions
EP1114429A1 (fr
Inventor
Detlef Otte
Jörg PETZOLD
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Vacuumschmelze GmbH and Co KG
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 Vacuumschmelze GmbH and Co KG filed Critical Vacuumschmelze GmbH and Co KG
Publication of EP1114429A1 publication Critical patent/EP1114429A1/fr
Application granted granted Critical
Publication of EP1114429B1 publication Critical patent/EP1114429B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01F38/28—Current transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15316—Amorphous metallic alloys, e.g. glassy metals based on Co
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles

Definitions

  • the invention relates to a current transformer for alternating current, in particular mains alternating current, with direct current components, consisting from at least one converter core with a primary winding and at least one secondary winding, to which a burden resistor is connected in parallel and a secondary circuit terminates with low impedance.
  • Ferraris meter To record the energy consumption of electrical devices and Energy meters are used in industrial and household systems.
  • the oldest principle used is that of Ferraris meter.
  • the Ferraris meter is based on energy metering about rotating one with a mechanical Counter connected disc by the current or voltage proportional Fields of corresponding field coils driven becomes.
  • electronic energy meters For expanding the functional possibilities of energy meters such as B. for multi-tariff operation or remote reading electronic energy meters are used at which the current and voltage detection via inductive current and Voltage converter takes place.
  • the output signals of this Converters are digitized, multiplied in phase, integrated and saved. The result is an electrical one Size that is available for remote reading among other things stands.
  • the object of the present invention is therefore a current transformer for alternating current with direct current components of the input mentioned type in that he has a high modulation equally with alternating current and direct current components having.
  • alloy systems according to the invention can be very small Transformer core masses can be achieved.
  • n 1 1
  • current transformers can be provided which can make do with a number of secondary turns of approximately 1500.
  • a direct current-tolerant current transformer can be produced which is extremely inexpensive to manufacture and is excellently suited for the above-mentioned applications in industry and household.
  • Particularly good current transformers can be achieved by using amorphous, ferromagnetic alloys that have a magnetostriction value
  • the alloy system according to the invention is almost free of magnetostriction.
  • the magnetostriction is preferably adjusted by a heat treatment, the actual saturation magnetostriction being achieved by fine adjustment of the iron and / or manganese content.
  • the saturation magnetization B s from 0.7 Tesla to 1.2 Tesla is made possible by fine-tuning the nickel and the glass former content.
  • Glass former here means X, silicon, boron and carbon.
  • Alloys in which the parameters a + b + c 77 77 are set to c 20 20 have proven to be particularly suitable in the amorphous, ferromagnetic cobalt-based alloy system according to the invention. As a result, saturation magnetizations B S of 0.85 Tesla or higher can easily be achieved.
  • the permeability of less than 1400 is based on the physical connection that the permeability ⁇ is inversely proportional to the uniaxial anisotropy K u .
  • the uniaxial anisotropy K u can be set by heat treatment in a transverse magnetic field.
  • the nickel content has a particularly strong influence on the uniaxial anisotropy K u .
  • d ⁇ 30 ⁇ m preferably d ⁇ 26 ⁇ m.
  • the band of the toroidal core at least instructs an electrically insulating layer on one surface.
  • the entire toroid has one electrically insulating layer. This makes it special achieved low permeabilities and also the linearity of the B-H grinding is further improved. When choosing the It is important to ensure that the electrically insulating medium this adheres well to the belt surface on the one hand, on the other hand however, it does not cause surface reactions would damage the magnetic properties.
  • Magnesium oxide is particularly effective and economical, which as a liquid magnesium-containing precursor the tape surface can be applied and during a special one that does not affect the alloy Heat treatment in a dense magnesium-containing Converts layer whose thickness D is between 25 nm and 400 nm lies. In the actual heat treatment in the transverse Magnetic field then creates a well-adhering, chemically inert, electrically insulating magnesium oxide layer.
  • FIG. 1 shows the basic circuit of a current transformer 1.
  • the primary winding 2, which carries the current i prim to be measured, and a secondary winding 3, which carries the measuring current i sek are located on a transformer core 4 which is constructed from a ring band core.
  • the secondary current i sek automatically adjusts itself so that the ampere turns primary and secondary are ideally of the same size and oppositely directed.
  • the current in the secondary winding 3 then turns after Induction law so that it is the cause of its emergence, namely the temporal change in the magnetic flux in the converter core 4, tried to prevent.
  • An important area of application for current transformers is electronic Energy meters in low-voltage AC networks with a network frequency of 50 or 60 Hertz.
  • the evaluation electronics in such meters, the product is electricity and tension at any time and calculates the electrical power or energy consumption.
  • phase error of the current transformer is particularly critical in the Energy metering. Because of this, it is important to either the lowest possible phase error, typically one Phase error ⁇ ⁇ 0.2 °, or one over the Current measuring range as constant as possible and thus easily compensated to achieve higher phase errors.
  • the losses in the converter core 4 must also be taken into account.
  • the core losses are dependent on the material properties of the converter core 4, ie in the case of toroidal core made of the material, the strip thickness and other parameters. They can be described by a second phase angle ⁇ .
  • the second phase angle ⁇ corresponds to the phase shift between B and H in the converter core 4 due to the core losses.
  • the properties of the core material are above the relative ones Permeability ⁇ and the loss angle ⁇ or the loss factor tan ⁇ included. These material properties are strongly dependent on the magnetic modulation B of the converter core and thus from the primary current. This is the cause of the non-linearity of the converter characteristics.
  • the international standard IEC1036 requires functionality of the electricity meter, however with limited accuracy, even with completely half-wave rectified AC. That corresponds to a situation in which the complete Primary current is passed through a diode.
  • FIG. 3 shows an oscillogram of the primary current, the secondary current of a current transformer and the flux density B in one Converter core for a half-wave rectified primary current. As you can see, the flux density B increases with the converter every half-wave in steps up to the converter core in the Saturation goes.
  • This time constant is large if and only if the converter is of high quality according to equation (3). With good current transformers, it is in the seconds range.
  • converter cores of at least 70% amorphous, Ferromagnetic, almost magnetostriction-free cobalt base alloys reached. These cobalt base alloys have a flat, almost linear B-H loop with one Permeability ⁇ ⁇ 1400.
  • the converter cores are preferred as closed, air gap-free toroidal cores in oval or rectangular shape.
  • the amorphous, ferromagnetic shown in Table 1 Cobalt based alloys were initially considered amorphous Tape from a melt using the known per se Rapid solidification technology manufactured.
  • the rapid solidification technology is for example in DE 37 31 781 C1 described in detail.
  • the tape which has a thickness of approximately 20 ⁇ m, then became stress-free into one Ring core wound.
  • the setting of the linear, flat essential to the invention B-H loop was then carried out by a special heat treatment of the wound toroid in a magnetic field that stood perpendicular to the tape direction.
  • the heat treatment was made so that the value of the saturation magnetostriction of the rapidly solidified (as quenched) band during the Heat treatment by one of the alloy composition dependent amount changed in the positive direction until it changed in the ranges listed in the table.
  • the heat treatment shown in FIG. 5 was found with which, in the case of an alloy with the composition Co 72.7 Fe 4.6 Si 5.5 B 17.2, the strongly negative value of the magnetostication of ⁇ S ⁇ -45 x 10 -8 of the rapidly solidified (as quenched) band was shifted in the positive direction up to almost the zero crossing ( ⁇ S ⁇ -2 x 10 -8 ).
  • An F loop is understood to be a hysteresis loop which has a ratio of remanence B r to saturation induction B s ⁇ 50.
  • the toroidal core was covered with a Flushed with protective gas so that no oxidation on the belt surface or other chemical reactions occurred that the physical properties of the toroidal core are negative would affect.
  • the wound ring band core was placed under a magnetic field at a rate of 1 to 10 Kelvin / min to far below the specified Curie temperatures are temperatures of approximately 300 ° C heated and several hours in the created transverse magnetic field held in this temperature interval and then at a cooling rate of 0.1 to 5 Kelvin / min cooled down again.
  • the manufacturability of very small and yet very high-precision current transformers presupposes that the amplitude permeability ⁇ of the current transformer core changes by less than 6%, preferably 4%, in the modulation range of 1 mT B B and 0,9 0.9 B s .
  • This linearity requirement can be met via the manufacturing process described, provided that the strip material used has relative surface roughness R rel .
  • the definition of the roughness depth Ra rel is explained below with reference to FIG. 8.
  • the x-axis is parallel to the surface of a body whose surface roughness is to be determined.
  • the y-axis is parallel to the surface normal of the surface to be measured.
  • the surface roughness R A then corresponds to the height of a rectangle 7, the length of which is equal to a total measuring distance l m and which has the same area as the sum of the areas 10 enclosed between a roughness profile 8 and a middle line 9.
  • a ring band core weighing only 4.7 g could be produced from the alloy Co 72.8 Fe 4.7 Si 5.5 B 17 , which was provided with a secondary winding with a number of turns n sec of 1000.
  • the current transformer produced in this way had a linearity of the phase angle over a current range from ⁇ 120 mA to 120 A of ⁇ 0.2 °.
  • the current transformer manufactured with this toroidal core had over a phase error of 8.9 ° +/- 0.1 ° in the entire current range.
  • the ratio between the highest transferable RMS value of the bipolar zero-symmetrical sine current to be measured and the highest transmittable amplitude of a unipolar half-wave rectified sine current was 1.4: 1.
  • the toroidal core also showed very good aging behavior at 120 ° C on what is shown in Figure 6 what with the very high crystallization temperature and the high Anisotropy energy of this alloy can be explained.
  • the device according to the invention can be used used alloy range permeability values set between 500 and 1400.
  • Figure 5 shows through the use of the claimed alloy system an extremely high temperature stability of the permeability realize. This is the typical change, for example between room temperature and + 100 ° C at less than 5%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Soft Magnetic Materials (AREA)

Claims (11)

  1. Transformateur d'intensité pour un courant alternatif contenant des composantes de courant continu, constitué d'au moins un noyau de transformateur avec un enroulement primaire et au moins un enroulement secondaire, sur lequel est connectée en parallèle une résistance ohmique apparente qui ferme avec une faible impédance un circuit de courant secondaire,
    caractérisé en ce que
    en guise de noyau de transformateur est prévu un noyau torique fermé sans entrefer constitué d'une bande en alliage ferromagnétique amorphe,
    l'alliage ferromagnétique amorphe possède une valeur de magnétostriction |λS| < 0,5 ppm et une perméabilité µ < 1400, et
    l'alliage possède une composition qui est donnée approximativement par la formule Coa(Fe1-xMnx)bNicXdSieBfCg
    où X est au moins un des éléments V, Nb, Ta, Cr, Mo, W, Ge et P, a à g sont indiqués en pourcentage atomique et a, b, c, d, e, f, g et x remplissent les conditions suivantes :
    40 ≤ a ≤ 82; 2 ≤ b ≤ 10; 0 ≤ c ≤ 30; 0 ≤ d ≤ 5; 0 ≤ e ≤ 15; 7 ≤ f ≤ 26; 0≤ g ≤ 3; avec 15 ≤ d + e + f + g ≤ 30 et 0 ≤ x < 1.
  2. Transformateur d'intensité selon la revendication 1,
    caractérisé en ce que
    a, b, c, d, e, f, g et x remplissent les conditions suivantes :
    50 ≤ a ≤ 75; 3 ≤ b ≤ 10 ; 5 ≤ c ≤ 25; 0 ≤ d ≤ 3; 2 ≤ e ≤ 12; 8 ≤ f ≤ 20; 0≤ g ≤ 3; avec 17 ≤ d + e + f + g ≤ 25 et x ≤ 0,5.
  3. Transformateur d'intensité selon la revendication 2,
    caractérisé en ce que
    a, b et c remplissent les conditions suivantes :
    a + b + c ≥ 77 et c ≤ 20.
  4. Transformateur d'intensité selon la revendication 3,
    caractérisé en ce que
    l'alliage ferromagnétique amorphe possède une valeur de magnétostriction |λS|< 0,1 ppm et une perméabilité µ < 1300.
  5. Transformateur d'intensité selon l'une des revendications 1 à 4,
    caractérisé en ce que
    l'alliage ferromagnétique amorphe possède une saturation magnétique Bs de 0,7 à 1,2 Tesla.
  6. Transformateur d'intensité selon l'une des revendications 1 à 5,
    caractérisé en ce que
    la bande possède une épaisseur d de 17 µm ≤ d ≤ 30 µm.
  7. Transformateur d'intensité selon l'une des revendications 1 à 6,
    caractérisé en ce que
    la bande est dotée au moins sur une face d'une couche isolante électriquement.
  8. Transformateur d'intensité selon l'une des revendications 1 à 6,
    caractérisé en ce que
    le noyau torique est doté d'une couche isolante électriquement.
  9. Transformateur d'intensité selon la revendication 7 ou 8,
    caractérisé en ce que
    en guise de couche isolante électriquement, il est prévu une couche d'oxyde de magnésium.
  10. Transformateur d'intensité selon la revendication 9,
    caractérisé en ce que
    la couche d'oxyde de magnésium possède une épaisseur D de 25 nm ≤ D ≤. 400 nm.
  11. Transformateur d'intensité selon une des revendications 1 à 10,
    caractérisé en ce que
    l'enroulement secondaire possède un nombre de spires nsec ≤ 1500, l'enroulement primaire possédant un nombre de spires nprim = 1 et le transformateur d'intensité étant conçu pour un courant primaire iprim < 120 A.
EP99969529A 1998-09-17 1999-09-16 Transformateur de courant a tolerance vis-a-vis du courant continu Expired - Lifetime EP1114429B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19842710 1998-09-17
DE19842710 1998-09-17
PCT/DE1999/002955 WO2000017897A1 (fr) 1998-09-17 1999-09-16 Transformateur de courant a tolerance vis-a-vis du courant continu

Publications (2)

Publication Number Publication Date
EP1114429A1 EP1114429A1 (fr) 2001-07-11
EP1114429B1 true EP1114429B1 (fr) 2003-11-12

Family

ID=7881348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99969529A Expired - Lifetime EP1114429B1 (fr) 1998-09-17 1999-09-16 Transformateur de courant a tolerance vis-a-vis du courant continu

Country Status (5)

Country Link
US (1) US6563411B1 (fr)
EP (1) EP1114429B1 (fr)
JP (1) JP4755340B2 (fr)
DE (1) DE59907740D1 (fr)
WO (1) WO2000017897A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008051561B4 (de) * 2008-10-14 2013-06-20 Vacuumschmelze Gmbh & Co. Kg Verfahren zum Herstellen einer Stromerfassungseinrichtung

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100606514B1 (ko) * 1998-11-13 2006-07-31 바쿰슈멜체 게엠베하 운트 코. 카게 변류기에 사용하기에 적합한 자기 코어, 상기 자기 코어의 제조 방법 및 상기 자기 코어를 구비한 변류기
US6432226B2 (en) * 1999-04-12 2002-08-13 Alliedsignal Inc. Magnetic glassy alloys for high frequency applications
DE10134056B8 (de) * 2001-07-13 2014-05-28 Vacuumschmelze Gmbh & Co. Kg Verfahren zur Herstellung von nanokristallinen Magnetkernen sowie Vorrichtung zur Durchführung des Verfahrens
US6992555B2 (en) * 2003-01-30 2006-01-31 Metglas, Inc. Gapped amorphous metal-based magnetic core
WO2004076634A2 (fr) 2003-02-24 2004-09-10 Ira Sanders Translocation par membrane cellulaire d'inhibiteurs snare régulés, compositions associées et procédés de traitement de pathologies
JP5342745B2 (ja) * 2003-04-02 2013-11-13 バクームシュメルツェ ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニ コマンディートゲゼルシャフト 鉄心とその製造および使用方法
DE102004024337A1 (de) * 2004-05-17 2005-12-22 Vacuumschmelze Gmbh & Co. Kg Verfahren zur Herstellung nanokristalliner Stromwandlerkerne, nach diesem Verfahren hergestellte Magnetkerne sowie Stromwandler mit denselben
FR2877486B1 (fr) * 2004-10-29 2007-03-30 Imphy Alloys Sa Tore nanocristallin pour capteur de courant, compteurs d'energie a simple et a double etage et sondes de courant les incorporant
JP4716033B2 (ja) 2004-12-17 2011-07-06 日立金属株式会社 カレントトランス用磁心、カレントトランス及び電力量計
EP1724792A1 (fr) * 2005-05-20 2006-11-22 Imphy Alloys Procédé de fabrication d'une bande en matériau nanocristallin et dispositif de fabrication d'un tore enroulé à partir de cette bande
DE102005034486A1 (de) * 2005-07-20 2007-02-01 Vacuumschmelze Gmbh & Co. Kg Verfahren zur Herstellung eines weichmagnetischen Kerns für Generatoren sowie Generator mit einem derartigen Kern
CN101305284B (zh) * 2005-11-09 2011-06-08 梅特格拉斯公司 变流器与电能表
US8665055B2 (en) * 2006-02-21 2014-03-04 Michael E. McHenry Soft magnetic alloy and uses thereof
KR100815617B1 (ko) * 2006-08-10 2008-03-21 한국표준과학연구원 전류변성기 비교기와 정밀 션트저항을 이용한 전류변성기용부담의 평가장치 및 그 방법
ATE418625T1 (de) * 2006-10-30 2009-01-15 Vacuumschmelze Gmbh & Co Kg Weichmagnetische legierung auf eisen-kobalt-basis sowie verfahren zu deren herstellung
KR100882310B1 (ko) * 2007-06-29 2009-02-10 한국표준과학연구원 전류변성기 비교 측정장치
US8012270B2 (en) 2007-07-27 2011-09-06 Vacuumschmelze Gmbh & Co. Kg Soft magnetic iron/cobalt/chromium-based alloy and process for manufacturing it
US9057115B2 (en) * 2007-07-27 2015-06-16 Vacuumschmelze Gmbh & Co. Kg Soft magnetic iron-cobalt-based alloy and process for manufacturing it
KR100904664B1 (ko) * 2008-06-03 2009-06-25 주식회사 에이엠오 전류 센서용 자기 코어
DE102010004223B4 (de) 2010-01-08 2013-12-05 Vacuumschmelze Gmbh & Co. Kg Verfahren zum Herstellen einer Stromerfassungseinrichtung
CN102760568A (zh) * 2011-04-28 2012-10-31 南京江北自动化技术有限公司 电流互感器
CN103632826B (zh) * 2012-08-23 2018-01-16 西门子公司 电流互感器和电流检测装置
CN103219140B (zh) * 2013-04-24 2016-08-10 南京江北自动化技术有限公司 一种电流互感器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2824749A1 (de) 1978-06-06 1979-12-13 Vacuumschmelze Gmbh Induktives bauelement und verfahren zu seiner herstellung
DE2924280A1 (de) * 1979-06-15 1981-01-08 Vacuumschmelze Gmbh Amorphe weichmagnetische legierung
WO1981000861A1 (fr) 1979-09-21 1981-04-02 Hitachi Metals Ltd Alliages amorphes
JPS59198708A (ja) 1983-04-25 1984-11-10 Hitachi Metals Ltd チヨ−クコイル用磁心
DE3422281A1 (de) 1983-06-20 1984-12-20 Allied Corp., Morristown, N.J. Verfahren zur herstellung von formlingen aus magnetischen metallegierungen und so hergestellte formlinge
JPS61295601A (ja) * 1985-06-25 1986-12-26 Hitachi Metals Ltd コモンモ−ドチヨ−ク用アモルフアス磁心
JPS62124703A (ja) * 1985-11-25 1987-06-06 Mitsui Petrochem Ind Ltd 電流センサ
DE3685326D1 (de) * 1986-01-08 1992-06-17 Allied Signal Inc Glasartige legierungen mit perminvar-eigenschaften.
JPH0625399B2 (ja) * 1986-11-03 1994-04-06 アライド・コーポレーション 高周波使用のための磁歪がほぼ０のガラス質合金
JPH02167478A (ja) 1988-09-22 1990-06-27 Toshiba Corp 電流センサ
DE19653428C1 (de) * 1996-12-20 1998-03-26 Vacuumschmelze Gmbh Verfahren zum Herstellen von Bandkernbändern sowie induktives Bauelement mit Bandkern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008051561B4 (de) * 2008-10-14 2013-06-20 Vacuumschmelze Gmbh & Co. Kg Verfahren zum Herstellen einer Stromerfassungseinrichtung

Also Published As

Publication number Publication date
US6563411B1 (en) 2003-05-13
EP1114429A1 (fr) 2001-07-11
JP4755340B2 (ja) 2011-08-24
JP2002525863A (ja) 2002-08-13
DE59907740D1 (de) 2003-12-18
WO2000017897A1 (fr) 2000-03-30

Similar Documents

Publication Publication Date Title
EP1114429B1 (fr) Transformateur de courant a tolerance vis-a-vis du courant continu
EP1131830B1 (fr) Noyau magnetique destine a etre utilise dans un transformateur d&#39;intensite, procede de fabrication d&#39;un noyau magnetique et transformateur d&#39;intensite equipe d&#39;un tel noyau
EP1609159B1 (fr) Noyau magnetique, procede de realisation associe, utilisation d&#39;un noyau magnetique de ce type notamment dans des transformateurs de courant et dans des bobines de choc a compensation de courant, alliages et bandes pour realiser un tel noyau magnetique
DE3001889C2 (de) Verfahren zur Herstellung einer magnetischen glasartigen Legierungsfolie
EP1747566B1 (fr) Noyau de transformateur de courant et procede de production d&#39;un noyau de transformateur de courant
EP1317758B1 (fr) Transducteur magnetique a demi-periode avec noyau magnetique, utilisation de transducteurs magnetiques a demi-periode, ainsi que procede de fabrication de noyaux magnetiques pour transducteurs magnetiques a demi-periode
DE3884491T2 (de) Magnetkern und Verfahren zur Herstellung.
DE2708151C2 (de) Verwendung glasartiger Legierungen für Netztransformatoren oder Signalwandler
DE102007004835A1 (de) Amorphe weichmagnetische Legierung und diese verwendendes Induktions-Bauteil
DE2835389C2 (de) Verwendung einer glasartigen Legierung als magnetischer Werkstoff
DE202005022087U1 (de) Nanokristalliner Kern für Stromsensoren, ein- und zweistufige Energiezähler und diese integrierende Stromsonden
DE112008000720T5 (de) Weichmagnetische Legierung, die weichmagnetische Legierung verwendendes magnetisches Teil und Verfahren zum Herstellen derselbigen
DE68921856T2 (de) Weichmagnetische auf Fe-basierende Legierung.
DE3705893C3 (de) Verfahren zur Herstellung eines Magnetkerns mit hoher Permeabilität und Verwendung eines danach hergestellten Magnetkerns
DE3911480A1 (de) Verwendung einer feinkristallinen eisen-basislegierung als magnetwerkstoff fuer fehlerstrom-schutzschalter
DE3737266C2 (de) Weichmagnetischer Dünnfilm
DE69211438T2 (de) Magnetoresistant-Effekt Element
WO2009013711A2 (fr) Procédé de production de noyaux magnétiques
EP1129459B1 (fr) Utilisation d&#39;un noyau magnetique pour un transformateur d&#39;intensite, procede de fabrication d&#39;un noyau magnetique et transformateur d&#39;intensite equipe d&#39;un tel noyau
DE3710846A1 (de) Drehmomentmessvorrichtung
DE19739959C2 (de) Hartmagnetisches Material
DE3619659C2 (de) Verwendung einer glasartigen Legierung auf Fe-Basis
WO1998012847A1 (fr) Transformateur d&#39;impulsions pour interfaces en u selon le principe de la compensation d&#39;echo
DE69002044T2 (de) Dünner weichmagnetischer Film.
DE3486331T2 (de) Kern eines Störungsfilters aus einer amorphen Legierung.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20010406

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20031112

REF Corresponds to:

Ref document number: 59907740

Country of ref document: DE

Date of ref document: 20031218

Kind code of ref document: P

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20040813

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20140923

Year of fee payment: 16

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20150916

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150916

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20160922

Year of fee payment: 18

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20171002

Year of fee payment: 19

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170916

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20181130

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180930

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59907740

Country of ref document: DE