BE659684A - - Google Patents
Info
- Publication number
- BE659684A BE659684A BE659684DA BE659684A BE 659684 A BE659684 A BE 659684A BE 659684D A BE659684D A BE 659684DA BE 659684 A BE659684 A BE 659684A
- Authority
- BE
- Belgium
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
- H02H3/40—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 ratio of voltage and current
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0038—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller (comparing pulses or pulse trains according to amplitude)
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0038—Details of emergency protective circuit arrangements concerning the connection of the detecting means, e.g. for reducing their number
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
- Amplifiers (AREA)
- Measurement Of Current Or Voltage (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6014/64A GB1090901A (en) | 1964-02-13 | 1964-02-13 | Protective relay apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE659684A true BE659684A (US06878557-20050412-C00065.png) | 1965-05-28 |
Family
ID=9806873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE659684D BE659684A (US06878557-20050412-C00065.png) | 1964-02-13 | 1965-02-12 |
Country Status (6)
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1142783A (en) * | 1965-04-23 | 1969-02-12 | Reyrolle A & Co Ltd | Improvements relating to protective arrangements including electric level-responsive circuits |
| US3440492A (en) * | 1966-09-01 | 1969-04-22 | Itt | Voltage regulator and failure circuits |
| US3441802A (en) * | 1966-12-20 | 1969-04-29 | Powercon Inc | Voltage responsive relay type quantizer for monitoring plural sources |
| US3497772A (en) * | 1967-01-18 | 1970-02-24 | Westinghouse Electric Corp | Pilot wire protective arrangement for alternating current system wherein relay operating and restraint signals are derived during half cycles of opposite polarities |
| CN115436687B (zh) * | 2022-08-31 | 2023-06-16 | 重庆泊津科技有限公司 | 站用变压器接地电流同步合成方法及系统 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2608606A (en) * | 1950-06-29 | 1952-08-26 | Westinghouse Electric Corp | Bus differential protection |
| US3108205A (en) * | 1958-05-02 | 1963-10-22 | Burroughs Corp | Voltage sensing control circuit |
| CA644642A (en) * | 1958-10-27 | 1962-07-10 | F. Schuh Niles | Undervoltage sensing circuit |
| US3037151A (en) * | 1959-01-02 | 1962-05-29 | Rca Corp | Voltage monitoring apparatus |
| GB981752A (en) * | 1960-06-09 | 1965-01-27 | English Electric Co Ltd | Improvements in or relating to electrical protective relays |
| US3167685A (en) * | 1961-05-08 | 1965-01-26 | Gen Precision Inc | Computer protection circuit |
-
1964
- 1964-02-13 GB GB6014/64A patent/GB1090901A/en not_active Expired
-
1965
- 1965-02-10 US US431643A patent/US3340435A/en not_active Expired - Lifetime
- 1965-02-10 DE DE19651463133 patent/DE1463133A1/de active Pending
- 1965-02-12 BE BE659684D patent/BE659684A/xx unknown
- 1965-02-12 CH CH189965A patent/CH439460A/fr unknown
- 1965-02-13 SE SE1894/65A patent/SE301342B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1090901A (en) | 1967-11-15 |
| CH439460A (fr) | 1967-07-15 |
| DE1463133A1 (de) | 1968-12-12 |
| SE301342B (US06878557-20050412-C00065.png) | 1968-06-04 |
| US3340435A (en) | 1967-09-05 |
