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FR2363082A1 - Contactless current measuring system for cables - uses caliper transformer clipped around cable and induced current monitoring circuit - Google Patents

Contactless current measuring system for cables - uses caliper transformer clipped around cable and induced current monitoring circuit

Info

Publication number
FR2363082A1
FR2363082A1 FR7626437A FR7626437A FR2363082A1 FR 2363082 A1 FR2363082 A1 FR 2363082A1 FR 7626437 A FR7626437 A FR 7626437A FR 7626437 A FR7626437 A FR 7626437A FR 2363082 A1 FR2363082 A1 FR 2363082A1
Authority
FR
France
Prior art keywords
transformer
cables
measuring system
monitoring circuit
around cable
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
FR7626437A
Other languages
French (fr)
Other versions
FR2363082B3 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7626437A priority Critical patent/FR2363082A1/en
Publication of FR2363082A1 publication Critical patent/FR2363082A1/en
Application granted granted Critical
Publication of FR2363082B3 publication Critical patent/FR2363082B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
    • G01R1/22—Tong testers acting as secondary windings of current transformers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G01B7/10—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

The current flow in an insulated conductor is measured without damaging the insulator. There is a caliper (T), the semi-circular jaws of which carry the winding of an inductor transformer (1). The transformer is placed around the insulated conductor by separating the semi-circular jaws at circumferential position (e) by pivoting on a diametrically opposed hinge using handles (5) and (6). Induced current in the transformer from the encircled insulated conductor is conveyed to a circuit of measurement (G). This circuit is comprised of a solid state sealing circuit from which deflection signals proportional to the current in the encircled conductor are derived. The deflection signal is applied to a galvanometer on which by use of scales, a reading of the conductor current is obtained.
FR7626437A 1976-08-30 1976-08-30 Contactless current measuring system for cables - uses caliper transformer clipped around cable and induced current monitoring circuit Granted FR2363082A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7626437A FR2363082A1 (en) 1976-08-30 1976-08-30 Contactless current measuring system for cables - uses caliper transformer clipped around cable and induced current monitoring circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7626437A FR2363082A1 (en) 1976-08-30 1976-08-30 Contactless current measuring system for cables - uses caliper transformer clipped around cable and induced current monitoring circuit

Publications (2)

Publication Number Publication Date
FR2363082A1 true FR2363082A1 (en) 1978-03-24
FR2363082B3 FR2363082B3 (en) 1979-05-25

Family

ID=9177320

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7626437A Granted FR2363082A1 (en) 1976-08-30 1976-08-30 Contactless current measuring system for cables - uses caliper transformer clipped around cable and induced current monitoring circuit

Country Status (1)

Country Link
FR (1) FR2363082A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102944701A (en) * 2012-11-06 2013-02-27 西安开容电子技术有限责任公司 Wide-frequency-band current testing calipers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102944781A (en) * 2012-11-06 2013-02-27 西安开容电子技术有限责任公司 Miniaturized current test caliper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102944701A (en) * 2012-11-06 2013-02-27 西安开容电子技术有限责任公司 Wide-frequency-band current testing calipers

Also Published As

Publication number Publication date
FR2363082B3 (en) 1979-05-25

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Legal Events

Date Code Title Description
ST Notification of lapse