IT1010294B - Circuito per la rivelazione di guasti fra rete e terra e fra neutro e terra - Google Patents

Circuito per la rivelazione di guasti fra rete e terra e fra neutro e terra

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
English (en)
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/it

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/16Emergency 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
    • H02H3/17Emergency 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52Testing for short-circuits, leakage current or ground faults
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26Emergency 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
    • H02H3/32Emergency 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
    • H02H3/33Emergency 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
    • H02H3/331Emergency 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 Circuito per la rivelazione di guasti fra rete e terra e fra neutro e terra IT1010294B (it)

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 (it) 1977-01-10

Family

ID=23452208

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22140/74A IT1010294B (it) 1973-06-11 1974-04-30 Circuito per la rivelazione di guasti fra rete e terra e fra neutro e terra

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
NL7407470A (de) 1974-12-13
FR2232855A1 (de) 1975-01-03
FR2232855B1 (de) 1978-03-24
AU6982674A (en) 1975-12-11
SE7407451L (de) 1974-12-12

Similar Documents

Publication Publication Date Title
NO141385C (no) Fremgangsmaate for forvaesking av jordgass
NO147195C (no) Fremgangsmåte for utvinning av petroleum fra en underjordisk formasjon
NO148918C (no) Fremgangsmaate til aa fjerne fosfat fra bof-holdig avfallsvann
SE407465B (sv) Stroningsdetektor
BR7502435A (pt) Meio detector-interruptor de falha de terra
IT1039262B (it) Apparecchiatura per automatizzare la rivelazione di incrinature
IT954999B (it) Dispositivo elettrico di sicurezza sensibile ai guasti di terra
IT1011024B (it) Metodo ed apparecchiatura per fab bricare filtri per fumo
SE7613833L (sv) Anleggning for overvakning av leckdetektorer vid oljeledningar
BE836302A (nl) Heiinrichting
IT1035576B (it) Rivelatore di squilibrio di ttensione per sistemi di celle elettrolitiche
BR7502477A (pt) Aparelho bipolar de protecao para circuito de falha de terra
SE405385B (sv) Anordning for grevning och transport av grevda massor i vatten
SE397246B (sv) Analog elektrisk signalnivadetektor
SE396251B (sv) Fotoelektrisk rokdetektor
IT1010294B (it) Circuito per la rivelazione di guasti fra rete e terra e fra neutro e terra
IT1048638B (it) Apparato automatico d ispezione
DK300775A (da) Brandbeskyttende hydroxymethylphosphonsyreestere
BE834577A (fr) Barriere prefabriquee
SE7510536L (sv) Signalgenerator for korrigering av avbojningsvagor
FR2331035A1 (fr) Materiel de radionavigation
FI54129C (fi) Foerfarande foer framstaellning av en ny diester av 19-nortestosteron
DK521076A (da) Fremgangsmade til at forhindre lekage fra beholdere beliggende under terrenhojde
BE829238A (nl) Heiinrichting
SU501321A1 (ru) Щуп к течеискателю