IT1010294B - CIRCUIT FOR DETECTION OF FAULTS BETWEEN GRID AND EARTH AND BETWEEN NEUTRAL AND EARTH - Google Patents

CIRCUIT FOR DETECTION OF FAULTS BETWEEN GRID AND EARTH AND BETWEEN NEUTRAL AND EARTH

Info

Publication number
IT1010294B
IT1010294B IT22140/74A IT2214074A IT1010294B IT 1010294 B IT1010294 B IT 1010294B IT 22140/74 A IT22140/74 A IT 22140/74A IT 2214074 A IT2214074 A IT 2214074A IT 1010294 B IT1010294 B IT 1010294B
Authority
IT
Italy
Prior art keywords
earth
faults
neutral
grid
detection
Prior art date
Application number
IT22140/74A
Other languages
Italian (it)
Original Assignee
Rca 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 Rca Corp filed Critical Rca Corp
Application granted granted Critical
Publication of IT1010294B publication Critical patent/IT1010294B/en

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)
IT22140/74A 1973-06-11 1974-04-30 CIRCUIT FOR DETECTION OF FAULTS BETWEEN GRID AND EARTH AND BETWEEN NEUTRAL AND EARTH IT1010294B (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
IT1010294B true IT1010294B (en) 1977-01-10

Family

ID=23452208

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22140/74A IT1010294B (en) 1973-06-11 1974-04-30 CIRCUIT FOR DETECTION OF FAULTS BETWEEN GRID AND EARTH AND BETWEEN NEUTRAL AND EARTH

Country Status (7)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2508979C2 (en) * 1975-03-01 1984-07-12 Günter 4800 Bielefeld Reichensperger Arrangement for a circuit breaker with a fault current monitoring unit and an earthing resistance monitoring unit
DE2611674A1 (en) * 1976-03-19 1977-09-22 Guenter Reichensperger Protective circuit breaker system - has electronic earth resistance monitor and electronic faulty current monitor to control load circuit breaking
DE3048785A1 (en) * 1980-12-23 1982-07-15 Brown, Boveri & Cie Ag, 6800 Mannheim CIRCUIT ARRANGEMENT FOR DETECTING A FAULT CURRENT
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
SE7407451L (en) 1974-12-12
DE2427920A1 (en) 1975-01-02
AU6982674A (en) 1975-12-11
FR2232855B1 (en) 1978-03-24
JPS5035646A (en) 1975-04-04
FR2232855A1 (en) 1975-01-03
NL7407470A (en) 1974-12-13

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