DE2744177A1 - Vorrichtung zum schutz von elektrischen anlagen, bei denen der null-leiter nicht direkt an masse liegt, gegen eine erhitzung des null-leiters - Google Patents

Vorrichtung zum schutz von elektrischen anlagen, bei denen der null-leiter nicht direkt an masse liegt, gegen eine erhitzung des null-leiters

Info

Publication number
DE2744177A1
DE2744177A1 DE19772744177 DE2744177A DE2744177A1 DE 2744177 A1 DE2744177 A1 DE 2744177A1 DE 19772744177 DE19772744177 DE 19772744177 DE 2744177 A DE2744177 A DE 2744177A DE 2744177 A1 DE2744177 A1 DE 2744177A1
Authority
DE
Germany
Prior art keywords
value
current
conductor
arrangement according
neutral conductor
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Withdrawn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
DE19772744177
Other languages
German (de)
English (en)
Inventor
Guy Guegan
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.)
SOCHATA SNECMA
Original Assignee
SOCHATA SNECMA
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 SOCHATA SNECMA filed Critical SOCHATA SNECMA
Publication of DE2744177A1 publication Critical patent/DE2744177A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H02H3/16—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 fault current to earth, frame or mass
    • H02H3/162—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 fault current to earth, frame or mass for AC systems
    • H02H3/165—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 fault current to earth, frame or mass for AC systems for three-phase systems
    • 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
    • G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
    • G01R27/18—Measuring resistance to earth, i.e. line to ground
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults
    • 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
    • H02H3/16—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 fault current to earth, frame or mass
    • H02H3/17—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 fault current to earth, frame or mass by means of an auxiliary voltage injected into the installation to be protected

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Protection Circuit Devices (AREA)
DE19772744177 1976-10-01 1977-09-30 Vorrichtung zum schutz von elektrischen anlagen, bei denen der null-leiter nicht direkt an masse liegt, gegen eine erhitzung des null-leiters Withdrawn DE2744177A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7629991A FR2366726A1 (fr) 1976-10-01 1976-10-01 Dispositif de protection des installations electriques a neutre impedant contre un echauffement du conducteur neutre

Publications (1)

Publication Number Publication Date
DE2744177A1 true DE2744177A1 (de) 1978-04-06

Family

ID=9178426

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772744177 Withdrawn DE2744177A1 (de) 1976-10-01 1977-09-30 Vorrichtung zum schutz von elektrischen anlagen, bei denen der null-leiter nicht direkt an masse liegt, gegen eine erhitzung des null-leiters

Country Status (2)

Country Link
DE (1) DE2744177A1 (enExample)
FR (1) FR2366726A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0446951A3 (en) * 1990-03-16 1992-10-21 Mitsubishi Denki Kabushiki Kaisha Four-pole circuit breaker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR62607E (fr) * 1951-02-07 1955-06-15 Merlin Gerin Dispositif de contrôle d'isolement
FR1404657A (fr) * 1964-05-23 1965-07-02 Comp Generale Electricite Appareil de mesure d'isolement électrique
FR1519717A (fr) * 1967-02-20 1968-04-05 Christ Et Philippou S A Dispositif de recherche de défaut dans les installations électriques

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0446951A3 (en) * 1990-03-16 1992-10-21 Mitsubishi Denki Kabushiki Kaisha Four-pole circuit breaker

Also Published As

Publication number Publication date
FR2366726A1 (fr) 1978-04-28
FR2366726B1 (enExample) 1979-03-02

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Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee