FR2326065A1 - Parallel conductors protector system - uses voltage measurement to determine presence of short circuit in one cable - Google Patents

Parallel conductors protector system - uses voltage measurement to determine presence of short circuit in one cable

Info

Publication number
FR2326065A1
FR2326065A1 FR7529169A FR7529169A FR2326065A1 FR 2326065 A1 FR2326065 A1 FR 2326065A1 FR 7529169 A FR7529169 A FR 7529169A FR 7529169 A FR7529169 A FR 7529169A FR 2326065 A1 FR2326065 A1 FR 2326065A1
Authority
FR
France
Prior art keywords
cable
short circuit
voltage measurement
conductors
parallel conductors
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.)
Withdrawn
Application number
FR7529169A
Other languages
French (fr)
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.)
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann SA
Original Assignee
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann 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 Produits Chimiques Ugine Kuhlmann, Ugine Kuhlmann SA filed Critical Produits Chimiques Ugine Kuhlmann
Priority to FR7529169A priority Critical patent/FR2326065A1/en
Publication of FR2326065A1 publication Critical patent/FR2326065A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/267—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for parallel lines and wires
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors

Landscapes

  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

The apparatus is used for selective protection of electrical power cables against faults to ground from one of several phases. The circuit provides protection for a minimum of three conductors in parallel and may be extended to cover conductors in excess of this number. Circulating current levels are detected in each cable without the use of extra lines or sensitive homopolar devices by measurement of the associated voltages. Selective interruption of the lines is controlled by transformer fed circuits providing a comparison and memory facility for each line with respect to the remainder. Premature operation of contactors is avoided by use of delay circuits, selection being achieved using logic techniques. The system detects the presence of fault currents (11 and 12).
FR7529169A 1975-09-23 1975-09-23 Parallel conductors protector system - uses voltage measurement to determine presence of short circuit in one cable Withdrawn FR2326065A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7529169A FR2326065A1 (en) 1975-09-23 1975-09-23 Parallel conductors protector system - uses voltage measurement to determine presence of short circuit in one cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7529169A FR2326065A1 (en) 1975-09-23 1975-09-23 Parallel conductors protector system - uses voltage measurement to determine presence of short circuit in one cable

Publications (1)

Publication Number Publication Date
FR2326065A1 true FR2326065A1 (en) 1977-04-22

Family

ID=9160345

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7529169A Withdrawn FR2326065A1 (en) 1975-09-23 1975-09-23 Parallel conductors protector system - uses voltage measurement to determine presence of short circuit in one cable

Country Status (1)

Country Link
FR (1) FR2326065A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0921405A1 (en) * 1997-12-08 1999-06-09 Manufacture D'Appareillage Electrique de Cahors - MAEC Method for directional detection of a fault on an electric power distribution unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0921405A1 (en) * 1997-12-08 1999-06-09 Manufacture D'Appareillage Electrique de Cahors - MAEC Method for directional detection of a fault on an electric power distribution unit
FR2772132A1 (en) * 1997-12-08 1999-06-11 Conception Realisation Dev Ele METHOD FOR DIRECTIONAL FAULT DETECTION ON AN ELECTRIC POWER DISTRIBUTION NETWORK

Similar Documents

Publication Publication Date Title
GB1169706A (en) An Electrical Fault Detector
SE7700298L (en) PROCEDURE AND DEVICE FOR COMMUNICATION OF POWER LINES
ATE78376T1 (en) SPACING PROTECTION OF THREE-PHASE DISTRIBUTION TRANSFORMERS.
SE7902250L (en) SIGNAL SUPPLY DEVICE FOR ELECTRIC POWER SUPPLY WIRES
GB1502938A (en) System for underground distribution of electrical power and electrical cable construction for use therein
GB1060643A (en) Electrical fault detection arrangement
GB1539118A (en) Method of and apparatus for detecting faults on low voltage distribution electric cables
NO173076C (en) PROCEDURE AND DEVICE FOR LOCATING EARTH CIRCULATION OF A THREE PHASE NET WORKER
FR2326065A1 (en) Parallel conductors protector system - uses voltage measurement to determine presence of short circuit in one cable
US3156863A (en) Apparatus for locating a fault in electric cables having semi-conducting coverings
PL333380A1 (en) Earth fault protection circuit for a current generator stator winding
IE810253L (en) Measurement of electric power-polyphase network
ATE1032T1 (en) METHOD AND CIRCUIT ARRANGEMENT FOR TESTING FAULT CURRENT OR GFCI BREAKER.
GB935913A (en) Probe apparatus for testing insulated electric cables
GB1309986A (en) Location of faults in cables
SU1061065A2 (en) Device for measuring switch contact insulation resistance
JPS5728559A (en) Short circuit protector for field of synchronous generator
SU656143A1 (en) Device for protecting three-phase network with consumer from earth fault
FR2300447A1 (en) Protection device for electric generator or transformer - has current measuring elements in connections leading to and from star point (NL120876)
GB830073A (en) Improvements in and relating to devices for indicating the presence of potential in electrical apparatus
SU554101A1 (en) Device for underwater plasma arc cutting
SU655994A1 (en) Single-phase earthing detecting arrangement
GB2005930A (en) Finding faults in electrical cables
JPS54155082A (en) Insulating faulty point location detecting circuit of wire and cable
JPS5366584A (en) Searching method for direction of cable fault

Legal Events

Date Code Title Description
RE Withdrawal of published application