CH611466A5 - - Google Patents
Info
- Publication number
- CH611466A5 CH611466A5 CH62076A CH62076A CH611466A5 CH 611466 A5 CH611466 A5 CH 611466A5 CH 62076 A CH62076 A CH 62076A CH 62076 A CH62076 A CH 62076A CH 611466 A5 CH611466 A5 CH 611466A5
- Authority
- CH
- Switzerland
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/04—Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks
-
- 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
- H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/28—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus
- H02H3/30—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel
-
- 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
- H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/28—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus
- H02H3/30—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel
- H02H3/302—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel involving phase comparison
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50007894A JPS5183147A (es) | 1975-01-20 | 1975-01-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH611466A5 true CH611466A5 (es) | 1979-05-31 |
Family
ID=11678276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH62076A CH611466A5 (es) | 1975-01-20 | 1976-01-20 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4056839A (es) |
| JP (1) | JPS5183147A (es) |
| AU (1) | AU503571B2 (es) |
| CH (1) | CH611466A5 (es) |
| GB (3) | GB1544431A (es) |
| SE (1) | SE432327B (es) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4283678A (en) * | 1978-06-05 | 1981-08-11 | Watteredge-Uniflex, Inc. | Cable condition analyzing system for electric arc furnace conductors |
| US5790418A (en) * | 1995-10-17 | 1998-08-04 | Schweitzer Engineering Laboratories, Inc. | Adaptive polarizing memory voltage time constant |
| US6330141B1 (en) | 2000-06-13 | 2001-12-11 | Eaton Corporation | Electronic protective relay with variable and fixed delay tally time of current protection |
| US6717394B2 (en) | 2002-03-21 | 2004-04-06 | Eaton Corporation | Method and apparatus for determining frequency of an alternating current signal of an electric power system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1176018A (en) * | 1967-08-03 | 1970-01-01 | English Electric Co Ltd | Improvements in Definite-Time Relays. |
| US3657605A (en) * | 1969-07-02 | 1972-04-18 | Ass Elect Ind | Overcurrent transient non-responsive trip device |
| US3602776A (en) * | 1970-04-29 | 1971-08-31 | Westinghouse Electric Corp | Quick resetting apparatus |
| US3893008A (en) * | 1972-10-04 | 1975-07-01 | Westinghouse Electric Corp | Segregated phase comparison relaying apparatus |
| CH566009A5 (es) * | 1973-12-14 | 1975-08-29 | Secheron Atel | |
| SE378950B (es) * | 1974-01-07 | 1975-09-15 | Asea Ab |
-
1975
- 1975-01-20 JP JP50007894A patent/JPS5183147A/ja active Pending
-
1976
- 1976-01-16 GB GB1840/76A patent/GB1544431A/en not_active Expired
- 1976-01-16 AU AU10370/76A patent/AU503571B2/en not_active Expired
- 1976-01-19 SE SE7600465A patent/SE432327B/xx not_active IP Right Cessation
- 1976-01-19 US US05/650,159 patent/US4056839A/en not_active Expired - Lifetime
- 1976-01-20 GB GB39823/78A patent/GB1544433A/en not_active Expired
- 1976-01-20 CH CH62076A patent/CH611466A5/xx not_active IP Right Cessation
- 1976-01-20 GB GB39822/78A patent/GB1544432A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1544433A (en) | 1979-04-19 |
| JPS5183147A (es) | 1976-07-21 |
| SE7600465L (sv) | 1976-07-21 |
| GB1544432A (en) | 1979-04-19 |
| AU503571B2 (en) | 1979-09-13 |
| GB1544431A (en) | 1979-04-19 |
| AU1037076A (en) | 1977-07-28 |
| SE432327B (sv) | 1984-03-26 |
| US4056839A (en) | 1977-11-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |