NL7407470A - - Google Patents

Info

Publication number
NL7407470A
NL7407470A NL7407470A NL7407470A NL7407470A NL 7407470 A NL7407470 A NL 7407470A NL 7407470 A NL7407470 A NL 7407470A NL 7407470 A NL7407470 A NL 7407470A NL 7407470 A NL7407470 A NL 7407470A
Authority
NL
Netherlands
Application number
NL7407470A
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 filed Critical
Publication of NL7407470A publication Critical patent/NL7407470A/xx

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
    • H02H3/17—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
    • 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
    • H02H3/26—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
    • H02H3/33—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 using summation current transformers
    • H02H3/331—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 using summation current transformers responsive to earthing of the neutral conductor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Protection Circuit Devices (AREA)
NL7407470A 1973-06-11 1974-06-04 NL7407470A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US36866273A 1973-06-11 1973-06-11

Publications (1)

Publication Number Publication Date
NL7407470A true NL7407470A (de) 1974-12-13

Family

ID=23452208

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7407470A NL7407470A (de) 1973-06-11 1974-06-04

Country Status (7)

Country Link
JP (1) JPS5035646A (de)
AU (1) AU6982674A (de)
DE (1) DE2427920A1 (de)
FR (1) FR2232855B1 (de)
IT (1) IT1010294B (de)
NL (1) NL7407470A (de)
SE (1) SE7407451L (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2508979C2 (de) * 1975-03-01 1984-07-12 Günter 4800 Bielefeld Reichensperger Anordnung für einen Schutzschalter mit einer Fehlerstrom-Überwachungseinheit und einer Erdungswiderstand-Überwachungseinheit
DE2611674A1 (de) * 1976-03-19 1977-09-22 Guenter Reichensperger Schutzschalter
DE3048785A1 (de) * 1980-12-23 1982-07-15 Brown, Boveri & Cie Ag, 6800 Mannheim Schaltungsanordnung zur erfassung eines fehlerstromes
US7193827B2 (en) * 2003-10-16 2007-03-20 Square D Company Single-sensor microcontroller-based approach for ground fault circuit interrupters

Also Published As

Publication number Publication date
DE2427920A1 (de) 1975-01-02
JPS5035646A (de) 1975-04-04
FR2232855A1 (de) 1975-01-03
FR2232855B1 (de) 1978-03-24
IT1010294B (it) 1977-01-10
AU6982674A (en) 1975-12-11
SE7407451L (de) 1974-12-12

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