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FR2389139A1 - METHODS AND DEVICES FOR ELECTROMAGNETIC DETECTION OF FAULTS IN HEATING CABLES - Google Patents

METHODS AND DEVICES FOR ELECTROMAGNETIC DETECTION OF FAULTS IN HEATING CABLES

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Publication number
FR2389139A1
FR2389139A1FR7713474AFR7713474AFR2389139A1FR 2389139 A1FR2389139 A1FR 2389139A1FR 7713474 AFR7713474 AFR 7713474AFR 7713474 AFR7713474 AFR 7713474AFR 2389139 A1FR2389139 A1FR 2389139A1
Authority
FR
France
Prior art keywords
current
devices
faults
heating cables
methods
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
FR7713474A
Other languages
French (fr)
Other versions
FR2389139B1 (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.)
SOCOTEC SA
Original Assignee
SOCOTEC 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 SOCOTEC SAfiledCriticalSOCOTEC SA
Priority to FR7713474ApriorityCriticalpatent/FR2389139A1/en
Priority to GB1676178Aprioritypatent/GB1602877A/en
Publication of FR2389139A1publicationCriticalpatent/FR2389139A1/en
Application grantedgrantedCritical
Publication of FR2389139B1publicationCriticalpatent/FR2389139B1/fr
Grantedlegal-statusCriticalCurrent

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Abstract

Translated fromFrench

La présente invention a pour objet un procédé et des dispositifs de repérage des défauts des conducteurs électriques noyés dans une terre. Un procédé de repérage des défauts d'un tel conducteur consistant à faire passer dans une première section d'un conducteur un courant périodique, est principalement caractérisé en ce qu'il consiste en outre à faire passer dans une seconde section de ce conducteur un second courant périodique ayant des paramètres différents de ceux du premier courant. Un dispositif pour la mise en oeuvre d'un tel procédé est caractérisé principalement en ce qu'il comporte deux générateurs de courant 86 et 87 découplés et synchronisés l'un par rapport à l'autre. Application à la détection des fuites de courant des câbles chauffants noyés dans des chapes.The present invention relates to a method and devices for locating faults in electrical conductors embedded in an earth. A method for locating the defects of such a conductor consisting in passing a periodic current in a first section of a conductor, is mainly characterized in that it further consists in passing in a second section of this conductor a second periodic current having parameters different from those of the first current. A device for implementing such a method is characterized mainly in that it comprises two current generators 86 and 87 decoupled and synchronized with respect to one another. Application to the detection of current leaks from heating cables embedded in screeds.

FR7713474A1977-04-281977-04-28 METHODS AND DEVICES FOR ELECTROMAGNETIC DETECTION OF FAULTS IN HEATING CABLESGrantedFR2389139A1 (en)

Priority Applications (2)

Application NumberPriority DateFiling DateTitle
FR7713474AFR2389139A1 (en)1977-04-281977-04-28 METHODS AND DEVICES FOR ELECTROMAGNETIC DETECTION OF FAULTS IN HEATING CABLES
GB1676178AGB1602877A (en)1977-04-281978-04-27Process and apparatus for locating a defect in an embedded electric conductor

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
FR7713474AFR2389139A1 (en)1977-04-281977-04-28 METHODS AND DEVICES FOR ELECTROMAGNETIC DETECTION OF FAULTS IN HEATING CABLES

Publications (2)

Publication NumberPublication Date
FR2389139A1true FR2389139A1 (en)1978-11-24
FR2389139B1 FR2389139B1 (en)1983-03-11

Family

ID=9190291

Family Applications (1)

Application NumberTitlePriority DateFiling Date
FR7713474AGrantedFR2389139A1 (en)1977-04-281977-04-28 METHODS AND DEVICES FOR ELECTROMAGNETIC DETECTION OF FAULTS IN HEATING CABLES

Country Status (2)

CountryLink
FR (1)FR2389139A1 (en)
GB (1)GB1602877A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
CN102879709A (en)*2012-07-172013-01-16武汉朗德电气有限公司Real-time fault detection method for grounding circulation of feeder cable

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
EP0024183A1 (en)1979-08-181981-02-25Geodate LimitedA method of detecting faults in the electrically conductive sheath of an electric cable
GB2166248B (en)*1984-10-301988-01-20British Gas CorpDetecting resistance faults
FR2659437B1 (en)*1990-03-071994-03-25Caoutchouc Manufacture Plastique MEANS FOR LINEAR MARKING OF LENGTH, SPEED OR POSITIONING FOR FLEXIBLE ARTICLE OF LARGE LENGTH.
RU2150710C1 (en)*1999-06-252000-06-10Государственное унитарное предприятие ГУП "ПАРСЕК" дочернее предприятие НИИ МикроприборовMethod for contactless detection and measurement of current losses at underground transmission lines

Citations (3)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
FR1363402A (en)*1963-05-021964-06-12 Method for searching for the route of metal cables and pipes, and for locating electrical cable faults or losses to the earth, and equipment for its implementation
DE2226743A1 (en)*1972-06-021973-12-20Howaldtswerke Deutsche Werft METHOD OF MEASUREMENT OF EARTH FAULTS IN CABLE NETWORKS
US3860866A (en)*1973-05-041975-01-14Western Electric CoMethods and apparatus for locating an open section in a conductor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
FR1363402A (en)*1963-05-021964-06-12 Method for searching for the route of metal cables and pipes, and for locating electrical cable faults or losses to the earth, and equipment for its implementation
DE2226743A1 (en)*1972-06-021973-12-20Howaldtswerke Deutsche Werft METHOD OF MEASUREMENT OF EARTH FAULTS IN CABLE NETWORKS
US3860866A (en)*1973-05-041975-01-14Western Electric CoMethods and apparatus for locating an open section in a conductor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
CN102879709A (en)*2012-07-172013-01-16武汉朗德电气有限公司Real-time fault detection method for grounding circulation of feeder cable

Also Published As

Publication numberPublication date
GB1602877A (en)1981-11-18
FR2389139B1 (en)1983-03-11

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