JPS57131071A - Nondestructive impedance measuring device - Google Patents

Nondestructive impedance measuring device

Info

Publication number
JPS57131071A
JPS57131071A JP1657781A JP1657781A JPS57131071A JP S57131071 A JPS57131071 A JP S57131071A JP 1657781 A JP1657781 A JP 1657781A JP 1657781 A JP1657781 A JP 1657781A JP S57131071 A JPS57131071 A JP S57131071A
Authority
JP
Japan
Prior art keywords
wiring
circuit
measured
signal
impedance
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.)
Pending
Application number
JP1657781A
Other languages
Japanese (ja)
Inventor
Hideyo Murakami
Fumio Mano
Hideo Tatsuno
Yoichi Maeda
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP1657781A priority Critical patent/JPS57131071A/en
Publication of JPS57131071A publication Critical patent/JPS57131071A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant

Abstract

PURPOSE:To measure the impedance without disconnecting wiring by supplying and receiving the signal between a measuring circuit and a circuit to be measured through probes which are electromagnetically coupled with the wiring in the circuit to be measured. CONSTITUTION:The cores of the probes p 5 and 6, which are constituted so that a part of each core can be freely opened and closed, are temporarily opened, the wiring 2 of the circuit to be measured 1 is introduced in the cores, and the cores are closed. When a signal is supplied from an AC signal source 1, a current is induced in the wiring 2 through the probe 5. A signal is induced in the probe 6 by said current and appears at at terminals 8. The voltage and the current at the terminals 8 are measured in a measuring circuit 11, and the impedance of the circuit 1 viewed from the wiring 2 is obtained. In this constitution, the impedance of the electric circuit wherein wiring is provided can be measured without disconnecting the wiring.
JP1657781A 1981-02-05 1981-02-05 Nondestructive impedance measuring device Pending JPS57131071A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1657781A JPS57131071A (en) 1981-02-05 1981-02-05 Nondestructive impedance measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1657781A JPS57131071A (en) 1981-02-05 1981-02-05 Nondestructive impedance measuring device

Publications (1)

Publication Number Publication Date
JPS57131071A true JPS57131071A (en) 1982-08-13

Family

ID=11920137

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1657781A Pending JPS57131071A (en) 1981-02-05 1981-02-05 Nondestructive impedance measuring device

Country Status (1)

Country Link
JP (1) JPS57131071A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60195461A (en) * 1984-03-19 1985-10-03 Tokyo Gas Co Ltd Method and device for measuring joint resistance of insulating joint
EP0300653A2 (en) * 1987-07-22 1989-01-25 Hughes Aircraft Company Loop resistance test apparatus
JP2006266814A (en) * 2005-03-23 2006-10-05 Nf Corp Alternating-current impedance measuring device and method
EP1566644B1 (en) * 2004-02-18 2009-01-28 Chauvin-Arnoux Method for the measurement of earth resistances of electric installations by measuring the loop-impedance
WO2017001799A1 (en) * 2015-06-30 2017-01-05 Mersen France Amiens Sas Monitoring the state of a current collector strip designed to rub against a trolley wire

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60195461A (en) * 1984-03-19 1985-10-03 Tokyo Gas Co Ltd Method and device for measuring joint resistance of insulating joint
EP0300653A2 (en) * 1987-07-22 1989-01-25 Hughes Aircraft Company Loop resistance test apparatus
EP1566644B1 (en) * 2004-02-18 2009-01-28 Chauvin-Arnoux Method for the measurement of earth resistances of electric installations by measuring the loop-impedance
JP2006266814A (en) * 2005-03-23 2006-10-05 Nf Corp Alternating-current impedance measuring device and method
WO2017001799A1 (en) * 2015-06-30 2017-01-05 Mersen France Amiens Sas Monitoring the state of a current collector strip designed to rub against a trolley wire
FR3038269A1 (en) * 2015-06-30 2017-01-06 Mersen France Amiens Sas MONITORING THE STATE OF A CURRENT TRANSMISSION STRIP INTENDED TO FRACTURE AGAINST CATENARY WIRE.

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