EP0558428B1 - Ringkerntransformator für Klasse-A-Differenzsensor - Google Patents

Ringkerntransformator für Klasse-A-Differenzsensor Download PDF

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Publication number
EP0558428B1
EP0558428B1 EP19930420079 EP93420079A EP0558428B1 EP 0558428 B1 EP0558428 B1 EP 0558428B1 EP 19930420079 EP19930420079 EP 19930420079 EP 93420079 A EP93420079 A EP 93420079A EP 0558428 B1 EP0558428 B1 EP 0558428B1
Authority
EP
European Patent Office
Prior art keywords
winding
primary
insulating case
transformer
class
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
EP19930420079
Other languages
English (en)
French (fr)
Other versions
EP0558428A1 (de
Inventor
Michel Merlin Gerin Vieux
Claude Merlin Gerin Vivarat-Martin
Jean-Louis Merlin Gerin Ducroquet
Elhoussaine Merlin Gerin Elfarissi
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.)
Schneider Electric SE
Original Assignee
Schneider Electric SE
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 Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0558428A1 publication Critical patent/EP0558428A1/de
Application granted granted Critical
Publication of EP0558428B1 publication Critical patent/EP0558428B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/16—Toroidal transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
    • 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
    • H01F2038/305—Constructions with toroidal magnetic core

Definitions

  • the present invention relates to a toroidal transformer for a differential sensor operating in Class A, that is to say a differential sensor sensitive to rectified currents or to continuous components.
  • this transformer comprises the primary wire winding, which generally comprises the phase wire or wires and the neutral wire of the electrical power supply line, and which passes through the central orifice of the first annular casing.
  • the primary wire winding passes either directly into this central orifice without creating turns, or on the contrary passes through it by making one or more turns around the second insulating housing.
  • the secondary winding is the seat of an induced voltage which allows this fault to be recognized.
  • the secondary winding, and the second insulating box are distributed over an angular sector of the order of 180 degrees.
  • transformer 1 in the form of a torus for differential sensor operating in Class A, such a transformer being more simply called “Class A torus" in professional language.
  • a magnetic core 4 visible in FIGS. 3 and 4, in the form of an annular torus with rectangular section, this magnetic core 4 being enveloped by a first insulating protective casing 5, of a shape corresponding to that of the core 4, which is composed of two nested half-shells, 5A and 5B.
  • the secondary winding 6 consists of a winding with a large number of turns which, according to the invention, is distributed only over an angular sector A of the order of a semicircle. In the case shown, this angular sector A extends over a little more than 180 degrees.
  • the secondary winding 6 has rectangular turns, wound on the first box 5, but this winding is only carried out on the first angular sector A.
  • the primary windings 2 and 3 comprising in this example a turn SP of the phase wire and a turn SN of the neutral wire, can then be wound on the second portion 5S thus remaining visible from the first insulating unit 5, which provides a significant gain in space for this transformer.
  • the two turns, SP and SN, of the phase wire and the neutral wire are wound around the portion remained free 5S of the housing 5 so as to bear against the edge 8 of the second housing 7, which makes it possible to maintain the latter in position and to reinforce the solidity of the assembly.
  • the angle A could be much greater than 180 degrees instead of being close to it, provided that it leaves free a sector 5S sufficient to allow the winding of the primary turns, such as the turns SP and SN shown, around the portion that remains visible from the first insulating box 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Transformers For Measuring Instruments (AREA)

Claims (3)

  1. Ringkernwandler für eine in Klasse A betriebene Fehlerstromschutzeinrichtung, welcher
    - einen ringförmigen Magnetkern (4), der von einer ringförmigen, mit einer Phasenleiter-Primärwicklung (2) und einer Neutralleiter-Primärwicklung (3) umwickelten ersten Isolierstoffumhüllung (5) umgeben ist,
    - eine um die erste Isolierstoffumhüllung (5) gewickelte Sekundärwicklung (6),
    und eine die Sekundärwicklung (6) umgebende zweite Isolierstoffumhüllung (7) umfaßt, dadurch gekennzeichnet, daß
    die Sekundärwicklung (6) in einem ersten Winkelsegment (A) von weniger als 360° um die erste Umhüllung (5) gewickelt ist, daß die Primärwicklungen (2, 3) in einem freiliegenden, komplementären zweiten Winkelsegment (5S) um die erste Isolierstoffumhüllung (5) gewickelt sind, und daß die zweite Isolierstoffumhüllung (7) als Winkelsegment mit einer an die Form des erstens Segments (A) angepaßten Form ausgebildet ist.
  2. Wandler nach Anspruch 1, dadurch gekennzeichnet, daß sich das erste Winkelsegment (A) der Sekundärwicklung (6) etwa über 180 Grad erstreckt.
  3. Wandler nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß sich die Phasenleiter-Primärwicklung (2) und die Neutralleiter-Primärwicklung (3) an den Endkanten (8) der zweiten Isolierstoffumhüllung (7) abstützen.
EP19930420079 1992-02-24 1993-02-19 Ringkerntransformator für Klasse-A-Differenzsensor Expired - Lifetime EP0558428B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9202200A FR2687831B1 (fr) 1992-02-24 1992-02-24 Transformateur en forme de tore pour capteur differentiel fonctionnant en classe a.
FR9202200 1992-02-24

Publications (2)

Publication Number Publication Date
EP0558428A1 EP0558428A1 (de) 1993-09-01
EP0558428B1 true EP0558428B1 (de) 1996-09-04

Family

ID=9427040

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930420079 Expired - Lifetime EP0558428B1 (de) 1992-02-24 1993-02-19 Ringkerntransformator für Klasse-A-Differenzsensor

Country Status (3)

Country Link
EP (1) EP0558428B1 (de)
DE (1) DE69304370T2 (de)
FR (1) FR2687831B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19534560C2 (de) * 1995-09-18 1999-09-02 Siemens Ag Ringkern-Stromwandler
EP1884966A1 (de) * 2006-08-01 2008-02-06 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Trenntransformator
CN102013308A (zh) * 2009-09-04 2011-04-13 奥斯兰姆有限公司 电子变压器
US10320358B2 (en) * 2017-02-14 2019-06-11 Hamilton Sundstrand Corporation Magnetically coupled contactless damper
DE102018106449A1 (de) * 2018-03-20 2019-09-26 Vacuumschmelze Gmbh & Co. Kg Magnetische Baugruppe

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2147816B1 (de) * 1971-07-30 1975-02-07 Landis & Gyr Ag
DE3220737A1 (de) * 1982-06-02 1983-12-08 Siemens AG, 1000 Berlin und 8000 München Streufeldarme funk-entstoerdrossel
DE3307262A1 (de) * 1983-03-02 1984-09-06 Vogt Gmbh & Co Kg, 8391 Erlau Ringkern-entstoerdrossel mit gerichtetem streufeld

Also Published As

Publication number Publication date
DE69304370T2 (de) 1997-02-20
FR2687831B1 (fr) 1994-04-08
EP0558428A1 (de) 1993-09-01
FR2687831A1 (fr) 1993-08-27
DE69304370D1 (de) 1996-10-10

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