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FR2291591A1 - Magnetic circuit for differential transformer - has prismatic block of laminations matching winding core windows - Google Patents

Magnetic circuit for differential transformer - has prismatic block of laminations matching winding core windows

Info

Publication number
FR2291591A1
FR2291591A1 FR7406338A FR7406338A FR2291591A1 FR 2291591 A1 FR2291591 A1 FR 2291591A1 FR 7406338 A FR7406338 A FR 7406338A FR 7406338 A FR7406338 A FR 7406338A FR 2291591 A1 FR2291591 A1 FR 2291591A1
Authority
FR
France
Prior art keywords
magnetic circuit
holes
differential transformer
laminations
stack
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.)
Granted
Application number
FR7406338A
Other languages
French (fr)
Other versions
FR2291591B1 (en
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.)
Metalimphy SA
Original Assignee
Metalimphy SA
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 Metalimphy SA filed Critical Metalimphy SA
Priority to FR7406338A priority Critical patent/FR2291591A1/en
Priority to IT6733675A priority patent/IT1027499B/en
Priority to DE19752505761 priority patent/DE2505761A1/en
Priority to JP50022713A priority patent/JPS50146375A/ja
Publication of FR2291591A1 publication Critical patent/FR2291591A1/en
Application granted granted Critical
Publication of FR2291591B1 publication Critical patent/FR2291591B1/fr
Granted legal-status Critical Current

Links

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

The magnetic circuit for high current measurement included in a differential transformer consists of a flat prismatic magnetic block or stack of thin laminations electrically insulated from each other. Each lamination has two cut-in elongated windows so that the stack has two holes which penetrate the block or stack in the direction of its smallest thickness. The primary current conductors, are accepted by the holes and the secondary conductor passing also through the holes forms a loop around the inner core of the magnetic circuit. The cross-section of the holes is matched to the cross-section of the penetrating wires.
FR7406338A 1974-02-25 1974-02-25 Magnetic circuit for differential transformer - has prismatic block of laminations matching winding core windows Granted FR2291591A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7406338A FR2291591A1 (en) 1974-02-25 1974-02-25 Magnetic circuit for differential transformer - has prismatic block of laminations matching winding core windows
IT6733675A IT1027499B (en) 1974-02-25 1975-02-07 MAGNETIC CIRCUIT FOR CURRENT DETECTOR, AND DETECTOR MADE WITH SUCH A CIRCUIT
DE19752505761 DE2505761A1 (en) 1974-02-25 1975-02-12 MAGNETIC CIRCUIT AND AMMETER AND DIFFERENTIAL TRANSFORMER WITH IT
JP50022713A JPS50146375A (en) 1974-02-25 1975-02-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7406338A FR2291591A1 (en) 1974-02-25 1974-02-25 Magnetic circuit for differential transformer - has prismatic block of laminations matching winding core windows

Publications (2)

Publication Number Publication Date
FR2291591A1 true FR2291591A1 (en) 1976-06-11
FR2291591B1 FR2291591B1 (en) 1978-06-16

Family

ID=9135404

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7406338A Granted FR2291591A1 (en) 1974-02-25 1974-02-25 Magnetic circuit for differential transformer - has prismatic block of laminations matching winding core windows

Country Status (4)

Country Link
JP (1) JPS50146375A (en)
DE (1) DE2505761A1 (en)
FR (1) FR2291591A1 (en)
IT (1) IT1027499B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3140544A1 (en) * 1981-10-13 1983-04-21 Richard Dr.-Ing. 3300 Braunschweig Friedl ACTIVE CURRENT SENSOR WITH PRIMARY REDUCER
JPH0525222Y2 (en) * 1986-08-30 1993-06-25
DK0618451T3 (en) * 1993-03-05 1996-06-03 Deutsche Zaehler Gmbh Power transformers, especially for an electronic electricity meter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Also Published As

Publication number Publication date
DE2505761A1 (en) 1975-08-28
JPS50146375A (en) 1975-11-25
IT1027499B (en) 1978-11-20
FR2291591B1 (en) 1978-06-16

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse