FR2445051A1 - Relais de surintensite temporise - Google Patents

Relais de surintensite temporise

Info

Publication number
FR2445051A1
FR2445051A1 FR7931224A FR7931224A FR2445051A1 FR 2445051 A1 FR2445051 A1 FR 2445051A1 FR 7931224 A FR7931224 A FR 7931224A FR 7931224 A FR7931224 A FR 7931224A FR 2445051 A1 FR2445051 A1 FR 2445051A1
Authority
FR
France
Prior art keywords
overcurrent
adder
time
overcurrent relay
samples
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.)
Granted
Application number
FR7931224A
Other languages
English (en)
Other versions
FR2445051B1 (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.)
General Electric Co
Original Assignee
General Electric Co
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
Priority claimed from US05/971,312 external-priority patent/US4219858A/en
Priority claimed from US05/971,313 external-priority patent/US4219860A/en
Application filed by General Electric Co filed Critical General Electric Co
Publication of FR2445051A1 publication Critical patent/FR2445051A1/fr
Application granted granted Critical
Publication of FR2445051B1 publication Critical patent/FR2445051B1/fr
Granted 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
    • H02H3/08—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 excess current
    • H02H3/093—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 excess current with timing means
    • H02H3/0935—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 excess current with timing means the timing being determined by numerical means

Landscapes

  • Measurement Of Current Or Voltage (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

L'invention concerne les relais de surintensité de type électronique. Un relais de surintensité comporte notamment un convertisseur analogique-numérique 38 qui fournit des échantillons numériques des signaux d'entrée, un additionneur 62 qui fait la somme sur une certaine durée d'une suite de nombres déduits des échantillons, et un comparateur 98 qui compare le signal de sortie de l'additionneur avec un nombre limite. Le relais fournit un signal de déclenchement au bout d'une durée qui varie en fonction inverse de la surintensité détectée. Application à l'appareillage électrique.
FR7931224A 1978-12-20 1979-12-20 Relais de surintensite temporise Granted FR2445051A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/971,312 US4219858A (en) 1978-12-20 1978-12-20 Overcurrent relay apparatus
US05/971,313 US4219860A (en) 1978-12-20 1978-12-20 Overcurrent relay apparatus

Publications (2)

Publication Number Publication Date
FR2445051A1 true FR2445051A1 (fr) 1980-07-18
FR2445051B1 FR2445051B1 (fr) 1984-12-07

Family

ID=27130545

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7931224A Granted FR2445051A1 (fr) 1978-12-20 1979-12-20 Relais de surintensite temporise

Country Status (8)

Country Link
BR (1) BR7908424A (fr)
DE (1) DE2950031A1 (fr)
ES (1) ES487161A0 (fr)
FR (1) FR2445051A1 (fr)
GB (1) GB2037104B (fr)
IT (1) IT1126491B (fr)
MX (1) MX148544A (fr)
SE (1) SE7910486L (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538908A1 (fr) * 1982-12-30 1984-07-06 Petercem Sa Procede de mesure en courant alternatif de l'intensite par rapport a l'intensite nominale, et circuit electronique correspondant

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2081994B (en) * 1980-08-11 1983-04-07 South Eastern Elec Board Pulse sampled e l c b
JPS58172928A (ja) * 1982-04-01 1983-10-11 株式会社大隈鐵工所 モ−タの監視装置
DE3311240A1 (de) * 1982-04-05 1983-10-13 Siemens-Allis, Inc., 30338 Atlanta, Ga. Ueberwachungsgeraet mit schaltvorrichtung
US4553187A (en) * 1983-09-14 1985-11-12 Allen-Bradley Company Overcurrent detection device
US4589052A (en) * 1984-07-17 1986-05-13 General Electric Company Digital I2 T pickup, time bands and timing control circuits for static trip circuit breakers
DE3519262A1 (de) * 1985-05-24 1986-11-27 Siemens AG, 1000 Berlin und 8000 München Verfahren zum erzeugen eines ausloesesignals in abhaengigkeit von der groesse und der dauer eines ueberstromes
DE3522738A1 (de) * 1985-06-21 1987-01-02 Siemens Ag Verfahren zum erzeugen eines ausloesesignals in abhaengigkeit von der groesse und der dauer eines ueberstromes
DE3522739A1 (de) * 1985-06-21 1987-01-02 Siemens Ag Verfahren zum erzeugen eines ausloesesignals in abhaengigkeit von der groesse und der dauer eines ueberstromes

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4017766A (en) * 1975-08-04 1977-04-12 Westinghouse Electric Corporation Inverse time-overcurrent relay using successive linear approximations

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4017766A (en) * 1975-08-04 1977-04-12 Westinghouse Electric Corporation Inverse time-overcurrent relay using successive linear approximations

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538908A1 (fr) * 1982-12-30 1984-07-06 Petercem Sa Procede de mesure en courant alternatif de l'intensite par rapport a l'intensite nominale, et circuit electronique correspondant
EP0115733A1 (fr) * 1982-12-30 1984-08-15 Petercem S.A. Procédé de mesure en courant alternatif de l'intensité par rapport à l'intensité nominale, et circuit électronique correspondant

Also Published As

Publication number Publication date
DE2950031A1 (de) 1980-07-10
BR7908424A (pt) 1980-09-23
ES8101813A1 (es) 1980-12-16
GB2037104B (en) 1982-10-27
MX148544A (es) 1983-05-03
SE7910486L (sv) 1980-06-21
IT1126491B (it) 1986-05-21
GB2037104A (en) 1980-07-02
IT7927881A0 (it) 1979-12-07
FR2445051B1 (fr) 1984-12-07
ES487161A0 (es) 1980-12-16

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Legal Events

Date Code Title Description
ST Notification of lapse