GB2037104B - Overcurrent relay apparatus - Google Patents

Overcurrent relay apparatus

Info

Publication number
GB2037104B
GB2037104B GB7943206A GB7943206A GB2037104B GB 2037104 B GB2037104 B GB 2037104B GB 7943206 A GB7943206 A GB 7943206A GB 7943206 A GB7943206 A GB 7943206A GB 2037104 B GB2037104 B GB 2037104B
Authority
GB
United Kingdom
Prior art keywords
relay apparatus
overcurrent relay
overcurrent
relay
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.)
Expired
Application number
GB7943206A
Other versions
GB2037104A (en
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 US05/971,313 external-priority patent/US4219860A/en
Priority claimed from US05/971,312 external-priority patent/US4219858A/en
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB2037104A publication Critical patent/GB2037104A/en
Application granted granted Critical
Publication of GB2037104B publication Critical patent/GB2037104B/en
Expired 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
GB7943206A 1978-12-20 1979-12-14 Overcurrent relay apparatus Expired GB2037104B (en)

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
GB2037104A GB2037104A (en) 1980-07-02
GB2037104B true GB2037104B (en) 1982-10-27

Family

ID=27130545

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7943206A Expired GB2037104B (en) 1978-12-20 1979-12-14 Overcurrent relay apparatus

Country Status (8)

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

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 (en) * 1982-04-01 1983-10-11 株式会社大隈鐵工所 Device for monitoring motor
DE3311240A1 (en) * 1982-04-05 1983-10-13 Siemens-Allis, Inc., 30338 Atlanta, Ga. Monitoring apparatus with a switching device
FR2538908A1 (en) * 1982-12-30 1984-07-06 Petercem Sa METHOD FOR MEASURING ALTERNATING CURRENT IN RELATION TO THE NOMINAL INTENSITY, AND CORRESPONDING ELECTRONIC CIRCUIT
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 (en) * 1985-05-24 1986-11-27 Siemens AG, 1000 Berlin und 8000 München METHOD FOR GENERATING A TRIGGER SIGNAL DEPENDING ON THE SIZE AND DURATION OF AN OVERCURRENT
DE3522739A1 (en) * 1985-06-21 1987-01-02 Siemens Ag METHOD FOR GENERATING A TRIGGER SIGNAL DEPENDING ON THE SIZE AND DURATION OF AN OVERCURRENT
DE3522738A1 (en) * 1985-06-21 1987-01-02 Siemens Ag METHOD FOR GENERATING A TRIGGER SIGNAL DEPENDING ON THE SIZE AND DURATION OF AN OVERCURRENT

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
IT7927881A0 (en) 1979-12-07
DE2950031A1 (en) 1980-07-10
ES487161A0 (en) 1980-12-16
FR2445051A1 (en) 1980-07-18
MX148544A (en) 1983-05-03
ES8101813A1 (en) 1980-12-16
GB2037104A (en) 1980-07-02
BR7908424A (en) 1980-09-23
IT1126491B (en) 1986-05-21
SE7910486L (en) 1980-06-21
FR2445051B1 (en) 1984-12-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee