GB2037104B - Overcurrent relay apparatus - Google Patents

Overcurrent relay apparatus

Info

Publication number: GB2037104B
Authority: GB; United Kingdom
Prior art keywords: relay apparatus; overcurrent relay; overcurrent; relay
Prior art date: 1978-12-20
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.)

1978-12-20

Filing date

1979-12-14

Publication date

1982-10-27

1978-12-20 Priority claimed from US05/971,312 external-priority patent/US4219858A/en

1978-12-20 Priority claimed from US05/971,313 external-priority patent/US4219860A/en

1979-12-14 Application filed by General Electric Co filed Critical General Electric Co

1980-07-02 Publication of GB2037104A publication Critical patent/GB2037104A/en

1982-10-27 Application granted granted Critical

1982-10-27 Publication of GB2037104B publication Critical patent/GB2037104B/en

Status 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
US05/971,312 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
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

1979
- 1979-12-07 IT IT27881/79A patent/IT1126491B/en active
- 1979-12-11 MX MX180452A patent/MX148544A/en unknown
- 1979-12-13 DE DE19792950031 patent/DE2950031A1/en not_active Withdrawn
- 1979-12-14 GB GB7943206A patent/GB2037104B/en not_active Expired
- 1979-12-19 BR BR7908424A patent/BR7908424A/en unknown
- 1979-12-19 SE SE7910486A patent/SE7910486L/en not_active Application Discontinuation
- 1979-12-20 FR FR7931224A patent/FR2445051A1/en active Granted
- 1979-12-20 ES ES487161A patent/ES8101813A1/en not_active Expired

Also Published As

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

Legal Events

Date	Code	Title	Description
1986-07-30	PCNP	Patent ceased through non-payment of renewal fee

Publication	Publication Date	Title
GB2057207B (en)	1983-08-10	Relay switching apparatus
JPS554900A (en)	1980-01-14	Brealer javomg detachable tripping block
JPS54119657A (en)	1979-09-17	Small relay
GB2013979B (en)	1982-04-21	Expolosionproof switchgear apparatus
GB2037104B (en)	1982-10-27	Overcurrent relay apparatus
JPS54135340A (en)	1979-10-20	Relay device
JPS5526014A (en)	1980-02-25	Opposite time limit characteristic overcurrent relay
JPS54113058A (en)	1979-09-04	Relay
JPS5532461A (en)	1980-03-07	Overload relay
JPS54143860A (en)	1979-11-09	Relay
JPS5526100A (en)	1980-02-25	Time relay
JPS5517980A (en)	1980-02-07	Relay device
JPS54163342A (en)	1979-12-25	Selffretaining coilless relay
JPS5553028A (en)	1980-04-18	Relay
JPS54113239A (en)	1979-09-04	Slidable relay
JPS5526050A (en)	1980-02-25	Enclosed switchboard
JPS54129352A (en)	1979-10-06	Selffretaining relay
JPS5560234A (en)	1980-05-07	Relay
JPS54101151A (en)	1979-08-09	Relay
JPS54157250A (en)	1979-12-12	Relay
JPS5560233A (en)	1980-05-07	Relay
JPS54136684A (en)	1979-10-23	Time limiting relay
JPS5579613A (en)	1980-06-16	Overcurrent relay
JPS5586319A (en)	1980-06-30	Device for inspecting overcurrent relay
JPS5556325A (en)	1980-04-25	Time limit relay