EP0999565A1 - Messwandleranordnung zum Messen eines elektrischen Stroms - Google Patents

Messwandleranordnung zum Messen eines elektrischen Stroms Download PDF

Info

Publication number
EP0999565A1
EP0999565A1 EP99402756A EP99402756A EP0999565A1 EP 0999565 A1 EP0999565 A1 EP 0999565A1 EP 99402756 A EP99402756 A EP 99402756A EP 99402756 A EP99402756 A EP 99402756A EP 0999565 A1 EP0999565 A1 EP 0999565A1
Authority
EP
European Patent Office
Prior art keywords
arrangement according
flexible
torus
opening
air gap
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.)
Withdrawn
Application number
EP99402756A
Other languages
English (en)
French (fr)
Inventor
Daniel Arnoux
Axel Arnoux
Claude Genter
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.)
Chauvin Arnoux SAS
Original Assignee
Chauvin Arnoux SAS
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 Chauvin Arnoux SAS filed Critical Chauvin Arnoux SAS
Publication of EP0999565A1 publication Critical patent/EP0999565A1/de
Withdrawn legal-status Critical Current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
    • H01F38/30—Constructions

Definitions

  • the invention relates to an arrangement for measuring a current. electric, of the type comprising a transformer measurement equipped with a toroid-shaped magnetic circuit opening and likely to close on a cable in which flows the current to be measured.
  • Arrangements of this type which are known, include a rigid torus.
  • This arrangement has the disadvantage major than the opening of this rigid torus, to enclose the cable, requires mechanical means which are complex and two opening areas that have a greater sensitivity to the original magnetic field external or internal and thus distort the current measurement primary.
  • the weight of the arrangement also constitutes a disadvantage for larger magnetic circuits diameter.
  • the object of the present invention is to provide a measuring arrangement of the type indicated above, which does not not have the disadvantages that have just been stated.
  • the arrangement according to the invention is characterized in that the magnetic circuit is flexible and formed by stacking thin magnetic tapes and flexible.
  • the bands magnetic are left free or are very little maintained and advantageously fixed together only at each end of the torus.
  • the torus includes a device for opening and closing the quick click type.
  • the device opening and closing is a device to nesting advantageously of the male-female type.
  • the torus comprises a minimum air gap or an air gap which is suitable for house a magnetic sensor.
  • the influence of the air gap is compensated by an additional winding positioned at said air gap.
  • the magnetic circuit is surrounded by a flexible sheath.
  • At less winding is carried out on the sheath in one or several layers and the whole thus formed is surrounded an outer sheath.
  • Figure 1 is a schematic view in median section radial of a measurement arrangement according to this invention.
  • Figure 2 is a sectional view along line II-II of figure 1.
  • Figure 3 is a cutaway view, at larger ladder, in the direction of arrow III in FIG. 1 and shows the closing device of the flexible torus in its open position.
  • Figure 4 is a view similar to Figure 3, but in a direction perpendicular to arrow III of the figure 1.
  • the measurement arrangement according to the invention is designed for measurement of alternating or direct currents and includes essentially a transformer comprising, as it spring from the figures, a flexible magnetic circuit 1 in torus shape, which is made by assembly by stack of thin and flexible magnetic tapes 3 (figure 2). Strips 3 are left free or are very little maintained to allow free movement of these when handling the assembly. AT this end the bands are only fixed between them, anyway, at each end of the torus.
  • the toroid To protect the toroid 1, it is slid in an insulating sheath 4. On the latter are made the winding (s) 5, in one or more layers, evenly distributed. Then the assembly thus obtained is surrounded by a sheath of exterior protection 6.
  • the arrangement thus formed could be designed to have a minimum air gap 7.
  • the air gap could also be designed to accommodate a magnetic sensor such as a Hall effect cell, magneto-resistant sensor, whorl or the like.
  • the arrangement is provided with an opening device and closure 9 advantageously with rapid snap-on such a male / female type socket, with an air gap 7 which may be minimal or include accommodation for house the aforementioned magnetic sensor.
  • the deformation of the torus is done in the plane of the torus, with sliding the strips on top of each other, so that the magnetic characteristics may be affected.
  • the torus it is preferable to preform it, at the time of its manufacture, by stacking for example the strips of sheet metal on a template round shape.
  • FIGS 3 and 4 illustrate, by way of example, a mode of the opening and closing device 9 of the toroidal arrangement, according to the present invention.
  • This device comprises a male part 10 surrounding one end of the protective sheath exterior 6 and a second part 11 in the form of a socket of which a first portion 12 surrounds the second end of the outer sheath 6 and is extended by a second portion 13 intended to receive the male part 10 surrounding the first end.
  • the socket 12 advantageously carries two fins removable 14 which extend parallel to the axis of the socket at diametrically opposite locations and make protruding beyond the free end of the portion of female socket 13 while also being fixed on the socket.
  • the free protruding end of each fin 14 is bent at 15, radially towards the axis of the socket so as to form claws capable of engaging behind an annular flange 16 provided on the male part 10, at a distance predetermined from this end. This distance is chosen so that the claws 15 can snap behind the flange 16 when the part male 10 is correctly engaged in the female part 13 of the closing or opening device 9.
  • the invention provides the possibility of reducing the lines leakage at the air gap, thanks to a winding of compensation 20 arranged around the air gap area, as seen in 20 in Figure 1.
  • the invention offers the possibility of placing a sensor in the air gap.
  • the sensor connection wires can be exited with the connecting cable 18 allowing the exit winding wires 5.
  • the arrangement according to the invention makes it possible to measure leakage currents, with load or possibly depending on the charge cancellation principle with an amplifier operational in current input mode, currents alternating and continuous (with magnetic sensor suitable for induction measurement mode or flow cancellation with coil) or be associated with torus Rogowski principle (in measurement or with injection of current).

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
EP99402756A 1998-11-06 1999-11-05 Messwandleranordnung zum Messen eines elektrischen Stroms Withdrawn EP0999565A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9814020 1998-11-06
FR9814020 1998-11-06

Publications (1)

Publication Number Publication Date
EP0999565A1 true EP0999565A1 (de) 2000-05-10

Family

ID=9532479

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99402756A Withdrawn EP0999565A1 (de) 1998-11-06 1999-11-05 Messwandleranordnung zum Messen eines elektrischen Stroms

Country Status (1)

Country Link
EP (1) EP0999565A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010087703A1 (en) * 2009-01-27 2010-08-05 Liandon B.V. End user electricity network, use, method and assembly
EP2511712A1 (de) 2011-04-11 2012-10-17 Schneider Electric Industries SAS Vorrichtung zum Messen von elektrischem Strom umfassend eine Rogowskispule
EP2592426A1 (de) 2011-11-10 2013-05-15 Schneider Electric Industries SAS Messfühler zur Strommessung in einem elektrischen Kabel
CN103562734A (zh) * 2011-05-23 2014-02-05 菲尼克斯电气公司 电流测量转换器
WO2019135044A1 (fr) 2018-01-05 2019-07-11 Socomec Transformateur de courant ouvrant a noyau magnetique souple
WO2020178084A1 (fr) * 2019-03-07 2020-09-10 Socomec Dispositif de recuperation d'energie sur au moins un conducteur de puissance et procede de fabrication dudit dispositif de recuperation
US12027305B2 (en) 2018-01-05 2024-07-02 Socomec Openable current transformer comprising a flexible magnetic core

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE521886C (de) * 1929-09-15 1931-03-27 Koch & Sterzel Akt Ges Verfahren zum Herumlegen eines Ringstromwandlers um einen Leiter, insbesondere mit unzugaenglichen Enden
US3725832A (en) * 1971-10-12 1973-04-03 Schwertzer E Mfg Co Inc Magnetic core structure
FR2312844A1 (fr) * 1975-05-29 1976-12-24 Cem Comp Electro Mec Perfectionnemen
FR2640416A1 (fr) * 1988-12-13 1990-06-15 Delta Dore Transformateur d'intensite a circuit magnetique annulaire
EP0497681A1 (de) * 1991-01-29 1992-08-05 Etablissements Bardin Ringkern für Transformator und sein Herstellungsverfahren
EP0606181A1 (de) * 1993-01-08 1994-07-13 Etablissements Bardin Transformator, insbesondere Messwandler, zum Beispiel zur Erkennung von Fehlern in elektrischen Kabeln
JPH08250351A (ja) * 1995-03-14 1996-09-27 Tohoku Denki Hoan Kyokai 変流器

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE521886C (de) * 1929-09-15 1931-03-27 Koch & Sterzel Akt Ges Verfahren zum Herumlegen eines Ringstromwandlers um einen Leiter, insbesondere mit unzugaenglichen Enden
US3725832A (en) * 1971-10-12 1973-04-03 Schwertzer E Mfg Co Inc Magnetic core structure
FR2312844A1 (fr) * 1975-05-29 1976-12-24 Cem Comp Electro Mec Perfectionnemen
FR2640416A1 (fr) * 1988-12-13 1990-06-15 Delta Dore Transformateur d'intensite a circuit magnetique annulaire
EP0497681A1 (de) * 1991-01-29 1992-08-05 Etablissements Bardin Ringkern für Transformator und sein Herstellungsverfahren
EP0606181A1 (de) * 1993-01-08 1994-07-13 Etablissements Bardin Transformator, insbesondere Messwandler, zum Beispiel zur Erkennung von Fehlern in elektrischen Kabeln
JPH08250351A (ja) * 1995-03-14 1996-09-27 Tohoku Denki Hoan Kyokai 変流器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 097, no. 001 31 January 1997 (1997-01-31) *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010087703A1 (en) * 2009-01-27 2010-08-05 Liandon B.V. End user electricity network, use, method and assembly
EP2511712A1 (de) 2011-04-11 2012-10-17 Schneider Electric Industries SAS Vorrichtung zum Messen von elektrischem Strom umfassend eine Rogowskispule
RU2594610C2 (ru) * 2011-04-11 2016-08-20 Шнейдер Электрик Эндюстри Сас Устройство и сборка для измерения электрического тока
US9267970B2 (en) 2011-04-11 2016-02-23 Schneider Electric Industries Sas Device for measuring an electric current in a cable
US9165709B2 (en) 2011-05-23 2015-10-20 Phoenix Contact Gmbh & Co Kg Current transformer
CN103562734A (zh) * 2011-05-23 2014-02-05 菲尼克斯电气公司 电流测量转换器
CN103562734B (zh) * 2011-05-23 2016-03-30 菲尼克斯电气公司 电流测量转换器
EP2715374B1 (de) * 2011-05-23 2016-07-20 Phoenix Contact GmbH & Co. KG Strommessumformer
EP2592426A1 (de) 2011-11-10 2013-05-15 Schneider Electric Industries SAS Messfühler zur Strommessung in einem elektrischen Kabel
WO2019135044A1 (fr) 2018-01-05 2019-07-11 Socomec Transformateur de courant ouvrant a noyau magnetique souple
FR3076657A1 (fr) * 2018-01-05 2019-07-12 Socomec Transformateur de courant ouvrant a noyau magnetique souple
CN111630615A (zh) * 2018-01-05 2020-09-04 溯高美公司 包括柔性磁芯的开合式电流互感器
US12027305B2 (en) 2018-01-05 2024-07-02 Socomec Openable current transformer comprising a flexible magnetic core
WO2020178084A1 (fr) * 2019-03-07 2020-09-10 Socomec Dispositif de recuperation d'energie sur au moins un conducteur de puissance et procede de fabrication dudit dispositif de recuperation
FR3093588A1 (fr) * 2019-03-07 2020-09-11 Socomec Dispositif de récupération d’energie sur au moins un conducteur de puissance et procédé de fabrication dudit dispositif de récupération
US11749425B2 (en) 2019-03-07 2023-09-05 Socomec Energy recovery device on at least one power conductor and method for manufacturing the recovery device

Similar Documents

Publication Publication Date Title
EP2009453B1 (de) Rogowski-Stromsensor
EP0991950B1 (de) Stromsensor
EP0156659B1 (de) Elektrische Strommessanordnung unter Verwendung einer regelmässigen, ringförmigen Spule
EP0999565A1 (de) Messwandleranordnung zum Messen eines elektrischen Stroms
EP3037829B1 (de) Stromsensor und herstellungsverfahren eines solchen sensors
EP1445618B1 (de) Vorrichtung zur Messung des fliessenden elektrischen Stromes
EP0023163A1 (de) Biegsame Sonde zum zerstörungsfreien Prüfen sehr langer Rohre
FR2721763A1 (fr) Dispositif portatif de stockage d'une ligne téléphonique.
FR2798470A1 (fr) Capteur inductif pour la mesure d'un courant dans un conducteur
EP0489132B1 (de) Stellungsgeber zur erfassung der winkelposition einer rotierenden welle
FR2737922A1 (fr) Capteur de courant et appareil electrique le comportant
EP0606181B1 (de) Transformator, insbesondere Messwandler, zum Beispiel zur Erkennung von Fehlern in elektrischen Kabeln
FR2968900A1 (fr) Coque de telephone portable et procede de montage de la coque associe
FR2839393A1 (fr) Agencement d'un element femelle et dispositif mobile.
EP3385722A1 (de) Instrumentierte baugruppe für achsschenkel, und montageverfahren
FR2688933A1 (fr) Assemblage de tore magnetique a bobine.
FR2507811A1 (fr) Capteur de courant sans fer a tres grande plage de mesure
FR2982673A1 (fr) Capteur pour la mesure d'un courant dans un cable electrique
EP0340083A1 (de) Zündspule für Brennkraftmaschinen von Fahrzeugen und Verfahren zur Herstellung
EP3435398B1 (de) Elektrisches differentialschutzgerät
FR2687477A1 (fr) Capteur de courant.
EP0558428A1 (de) Ringkerntransformator für Klasse-A-Differenzsensor
FR2738952A1 (fr) Disjoncteur de protection contre les fuites a la masse
FR2677758A1 (fr) Capteur angulaire a transformateur differentiel.
FR2799840A1 (fr) Capteur de courant differentiel

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

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

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

17P Request for examination filed

Effective date: 20001110

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

18W Application withdrawn

Withdrawal date: 20001209