IT1126491B - Rele' di sovracorrente digitale - Google Patents

Rele' di sovracorrente digitale

Info

Publication number
IT1126491B
IT1126491B IT27881/79A IT2788179A IT1126491B IT 1126491 B IT1126491 B IT 1126491B IT 27881/79 A IT27881/79 A IT 27881/79A IT 2788179 A IT2788179 A IT 2788179A IT 1126491 B IT1126491 B IT 1126491B
Authority
IT
Italy
Prior art keywords
overcurrent relay
digital overcurrent
digital
relay
overcurrent
Prior art date
Application number
IT27881/79A
Other languages
English (en)
Other versions
IT7927881A0 (it
Inventor
Robert Perry Depuy
Arthur Henry Leitten
Original Assignee
Gen Electric
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 US05/971,313 external-priority patent/US4219860A/en
Priority claimed from US05/971,312 external-priority patent/US4219858A/en
Application filed by Gen Electric filed Critical Gen Electric
Publication of IT7927881A0 publication Critical patent/IT7927881A0/it
Application granted granted Critical
Publication of IT1126491B publication Critical patent/IT1126491B/it

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
IT27881/79A 1978-12-20 1979-12-07 Rele' di sovracorrente digitale IT1126491B (it)

Applications Claiming Priority (2)

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

Publications (2)

Publication Number Publication Date
IT7927881A0 IT7927881A0 (it) 1979-12-07
IT1126491B true IT1126491B (it) 1986-05-21

Family

ID=27130545

Family Applications (1)

Application Number Title Priority Date Filing Date
IT27881/79A IT1126491B (it) 1978-12-20 1979-12-07 Rele' di sovracorrente digitale

Country Status (8)

Country Link
BR (1) BR7908424A (it)
DE (1) DE2950031A1 (it)
ES (1) ES8101813A1 (it)
FR (1) FR2445051A1 (it)
GB (1) GB2037104B (it)
IT (1) IT1126491B (it)
MX (1) MX148544A (it)
SE (1) SE7910486L (it)

Families Citing this family (9)

* 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
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
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

Family Cites Families (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

Also Published As

Publication number Publication date
MX148544A (es) 1983-05-03
ES487161A0 (es) 1980-12-16
IT7927881A0 (it) 1979-12-07
GB2037104A (en) 1980-07-02
SE7910486L (sv) 1980-06-21
FR2445051A1 (fr) 1980-07-18
GB2037104B (en) 1982-10-27
DE2950031A1 (de) 1980-07-10
FR2445051B1 (it) 1984-12-07
ES8101813A1 (es) 1980-12-16
BR7908424A (pt) 1980-09-23

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