SE378949B - - Google Patents
Info
- Publication number
- SE378949B SE378949B SE7204550A SE455072A SE378949B SE 378949 B SE378949 B SE 378949B SE 7204550 A SE7204550 A SE 7204550A SE 455072 A SE455072 A SE 455072A SE 378949 B SE378949 B SE 378949B
- Authority
- SE
- Sweden
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
- H02H3/083—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 for three-phase systems
-
- 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
- H02H3/44—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 the rate of change of electrical quantities
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13199071A | 1971-04-07 | 1971-04-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE378949B true SE378949B (https=) | 1975-09-15 |
Family
ID=22451922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7204550A SE378949B (https=) | 1971-04-07 | 1972-04-07 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3654516A (https=) |
| ES (1) | ES401389A2 (https=) |
| FR (1) | FR2132716B1 (https=) |
| GB (1) | GB1366196A (https=) |
| IT (1) | IT1003053B (https=) |
| SE (1) | SE378949B (https=) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3731152A (en) * | 1972-05-25 | 1973-05-01 | Westinghouse Electric Corp | Impedance distance relay |
| US3876914A (en) * | 1973-08-01 | 1975-04-08 | Gen Electric | Static overcurrent or overvoltage protection circuit |
| US4125884A (en) * | 1977-01-06 | 1978-11-14 | Westinghouse Electric Corp. | Apparatus for detecting subsynchronous current in power systems |
| US4173774A (en) * | 1977-12-08 | 1979-11-06 | Westinghouse Electric Corp. | Parallel AC electrical system with differential protection immune to high current through faults |
| US4295057A (en) * | 1979-11-08 | 1981-10-13 | Honeywell Inc. | Dual signal control system |
| US4402028A (en) * | 1981-08-17 | 1983-08-30 | Electric Power Research Institute, Inc. | Protective relay methods and apparatus |
| 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 |
| FR2598266B1 (fr) * | 1986-04-30 | 1994-02-18 | Merlin Et Gerin | Declencheur statique instantane pour un disjoncteur limiteur |
| GB8817599D0 (en) * | 1988-07-23 | 1988-09-01 | Lucas Ind Plc | A c generator fault detector |
| US6205009B1 (en) * | 1999-07-22 | 2001-03-20 | General Electric Company | Method and apparatus for detecting faults in a resolver |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3252098A (en) * | 1961-11-20 | 1966-05-17 | Ibm | Waveform shaping circuit |
-
1971
- 1971-04-07 US US131990A patent/US3654516A/en not_active Expired - Lifetime
-
1972
- 1972-03-15 GB GB1205872A patent/GB1366196A/en not_active Expired
- 1972-03-27 IT IT22436/72A patent/IT1003053B/it active
- 1972-03-30 ES ES401389A patent/ES401389A2/es not_active Expired
- 1972-04-06 FR FR7212108A patent/FR2132716B1/fr not_active Expired
- 1972-04-07 SE SE7204550A patent/SE378949B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT1003053B (it) | 1976-06-10 |
| FR2132716A6 (https=) | 1972-11-24 |
| GB1366196A (en) | 1974-09-11 |
| FR2132716B1 (https=) | 1977-12-23 |
| ES401389A2 (es) | 1975-02-16 |
| US3654516A (en) | 1972-04-04 |