IN145805B - - Google Patents
Info
- Publication number
- IN145805B IN145805B IN88/CAL/76A IN88CA1976A IN145805B IN 145805 B IN145805 B IN 145805B IN 88CA1976 A IN88CA1976 A IN 88CA1976A IN 145805 B IN145805 B IN 145805B
- Authority
- IN
- India
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
- H02H3/26—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 |
|---|---|---|---|
| US05/548,135 US3986079A (en) | 1975-02-07 | 1975-02-07 | Offset keying technique for segregated phase comparison relaying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN145805B true IN145805B (US20100223739A1-20100909-C00025.png) | 1978-12-30 |
Family
ID=24187567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN88/CAL/76A IN145805B (US20100223739A1-20100909-C00025.png) | 1975-02-07 | 1976-01-15 |
Country Status (13)
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4053940A (en) * | 1976-08-20 | 1977-10-11 | Westinghouse Electric Corporation | Modified offset keying apparatus for phase comparison relaying |
| SE409266B (sv) * | 1977-11-28 | 1979-08-06 | Asea Ab | Releskydd med fasvis sperrfunktion |
| US4234901A (en) * | 1979-03-08 | 1980-11-18 | Westinghouse Electric Corp. | Protective relay apparatus |
| US4935837A (en) * | 1989-04-03 | 1990-06-19 | Abb Power T&D Company Inc. | Phase comparison relaying system with single channel communications link |
| US6130531A (en) * | 1995-11-17 | 2000-10-10 | Hao; Yushan | Phase angle measurement method and system in electric power systems |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3176190A (en) * | 1960-12-16 | 1965-03-30 | Gen Electric | Phase-comparison protective relaying system |
| US3295019A (en) * | 1964-06-29 | 1966-12-27 | Westinghouse Electric Corp | Phase comparison relaying device |
| US3470418A (en) * | 1967-06-06 | 1969-09-30 | Westinghouse Electric Corp | Phase comparison relaying network |
| US3590324A (en) * | 1969-06-27 | 1971-06-29 | Westinghouse Electric Corp | Phase comparison relaying network |
| US3612952A (en) * | 1970-06-30 | 1971-10-12 | Westinghouse Electric Corp | Time delay signal device especially for phase comparison protective relaying system |
| US3710189A (en) * | 1971-07-22 | 1973-01-09 | Westinghouse Electric Corp | Time delay signal device especially for phase comparison protective relaying system |
| US3893008A (en) * | 1972-10-04 | 1975-07-01 | Westinghouse Electric Corp | Segregated phase comparison relaying apparatus |
| AR207747A1 (es) * | 1972-10-04 | 1976-10-29 | Westinghouse Electric Corp | Dispositivo de aparatos-rele protectores |
| US3882361A (en) * | 1972-10-04 | 1975-05-06 | Westinghouse Electric Corp | Segregated phase comparison relaying apparatus |
| JPS5013937A (US20100223739A1-20100909-C00025.png) * | 1973-06-08 | 1975-02-13 | ||
| US3832601A (en) * | 1973-08-09 | 1974-08-27 | Westinghouse Electric Corp | Phase comparison relaying apparatus with two-count by-pass circuit |
| JPS5514609A (en) * | 1978-07-15 | 1980-02-01 | Matsushita Electric Works Ltd | Large current thermal relay |
-
1975
- 1975-02-07 US US05/548,135 patent/US3986079A/en not_active Expired - Lifetime
-
1976
- 1976-01-13 GB GB1230/76A patent/GB1531571A/en not_active Expired
- 1976-01-15 IN IN88/CAL/76A patent/IN145805B/en unknown
- 1976-01-16 CA CA243,687A patent/CA1019432A/en not_active Expired
- 1976-01-28 FR FR7602326A patent/FR2300448A1/fr not_active Withdrawn
- 1976-02-03 AU AU10763/76A patent/AU504420B2/en not_active Expired
- 1976-02-04 BR BR7600682A patent/BR7600682A/pt unknown
- 1976-02-05 DE DE19762604312 patent/DE2604312A1/de not_active Ceased
- 1976-02-06 JP JP51011522A patent/JPS51103241A/ja active Pending
- 1976-02-06 ES ES444971A patent/ES444971A1/es not_active Expired
- 1976-02-06 SE SE7601299A patent/SE404110B/xx unknown
- 1976-02-08 AR AR262133A patent/AR211115A1/es active
- 1976-02-09 IT IT41517/76A patent/IT1056691B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| IT1056691B (it) | 1982-02-20 |
| DE2604312A1 (de) | 1976-08-19 |
| SE404110B (sv) | 1978-09-18 |
| AU1076376A (en) | 1977-08-11 |
| AU504420B2 (en) | 1979-10-11 |
| CA1019432A (en) | 1977-10-18 |
| BR7600682A (pt) | 1976-08-31 |
| US3986079A (en) | 1976-10-12 |
| FR2300448A1 (fr) | 1976-09-03 |
| JPS51103241A (US20100223739A1-20100909-C00025.png) | 1976-09-11 |
| ES444971A1 (es) | 1977-07-16 |
| AR211115A1 (es) | 1977-10-31 |
| GB1531571A (en) | 1978-11-08 |
| SE7601299L (sv) | 1976-08-09 |
