FR2331030A1 - Pliers for non-invasive current measuring - have opening transformer in C:shaped halves to grip conductor - Google Patents

Pliers for non-invasive current measuring - have opening transformer in C:shaped halves to grip conductor

Info

Publication number
FR2331030A1
FR2331030A1 FR7533615A FR7533615A FR2331030A1 FR 2331030 A1 FR2331030 A1 FR 2331030A1 FR 7533615 A FR7533615 A FR 7533615A FR 7533615 A FR7533615 A FR 7533615A FR 2331030 A1 FR2331030 A1 FR 2331030A1
Authority
FR
France
Prior art keywords
transformer
halves
pliers
conductor
opening
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
FR7533615A
Other languages
French (fr)
Other versions
FR2331030B3 (en
Inventor
Marc Pinault
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.)
MARECHAUX DUBOST CIE
Original Assignee
MARECHAUX DUBOST CIE
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 MARECHAUX DUBOST CIE filed Critical MARECHAUX DUBOST CIE
Priority to FR7533615A priority Critical patent/FR2331030A1/en
Publication of FR2331030A1 publication Critical patent/FR2331030A1/en
Application granted granted Critical
Publication of FR2331030B3 publication Critical patent/FR2331030B3/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
    • 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

Landscapes

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

Abstract

Non-invasive current measuring pliers comprise an opening transformer having mirror symmetric C shaped halves (17). Each half comprises a laminated core (17) and coil (18). The requisite degree of contact between the halves in use is obtained by a floating mounting in conforming housings (16). The halves are pivotally mounted on a longitudinal axis (21) by means of a securing ring (19), and on a transverse axis by means of lugs (23) slidably mounted on pins (25) secured inside housings (16), lugs (23) having sufficient clearance to permit pivoting on axis (21). A spring (14) biases the pliers to the closed position while springs (24) bias the transformer halves towards each other in the transverse direction. Terminals (30) are connected in use to an ameter. The transformer is clipped around a conductor (37) by squeezing handles (15) against the bias of spring (14) thereby opening the transformer halves. Current induced in the transformer is measured on the ameter to indicate current flow in the conductor.
FR7533615A 1975-11-04 1975-11-04 Pliers for non-invasive current measuring - have opening transformer in C:shaped halves to grip conductor Granted FR2331030A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7533615A FR2331030A1 (en) 1975-11-04 1975-11-04 Pliers for non-invasive current measuring - have opening transformer in C:shaped halves to grip conductor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7533615A FR2331030A1 (en) 1975-11-04 1975-11-04 Pliers for non-invasive current measuring - have opening transformer in C:shaped halves to grip conductor

Publications (2)

Publication Number Publication Date
FR2331030A1 true FR2331030A1 (en) 1977-06-03
FR2331030B3 FR2331030B3 (en) 1979-09-14

Family

ID=9161982

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7533615A Granted FR2331030A1 (en) 1975-11-04 1975-11-04 Pliers for non-invasive current measuring - have opening transformer in C:shaped halves to grip conductor

Country Status (1)

Country Link
FR (1) FR2331030A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2551216A1 (en) * 1983-08-22 1985-03-01 Marechaux Dubost Cie Clamp, and split-core transformer incorporating such a clamp
CN111044761A (en) * 2019-12-31 2020-04-21 平湖擎福汽车零部件有限公司 Clamp measuring device
CN113960333A (en) * 2021-09-27 2022-01-21 武汉鑫泽科技有限公司 Arrangement method of horizontal loop and clamp method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2551216A1 (en) * 1983-08-22 1985-03-01 Marechaux Dubost Cie Clamp, and split-core transformer incorporating such a clamp
CN111044761A (en) * 2019-12-31 2020-04-21 平湖擎福汽车零部件有限公司 Clamp measuring device
CN113960333A (en) * 2021-09-27 2022-01-21 武汉鑫泽科技有限公司 Arrangement method of horizontal loop and clamp method
CN113960333B (en) * 2021-09-27 2024-05-07 武汉鑫泽科技有限公司 Method for arranging horizontal loop and clamp method

Also Published As

Publication number Publication date
FR2331030B3 (en) 1979-09-14

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Legal Events

Date Code Title Description
ST Notification of lapse