JPS321672B1 - - Google Patents
Info
- Publication number
- JPS321672B1 JPS321672B1 JP2782955A JP2782955A JPS321672B1 JP S321672 B1 JPS321672 B1 JP S321672B1 JP 2782955 A JP2782955 A JP 2782955A JP 2782955 A JP2782955 A JP 2782955A JP S321672 B1 JPS321672 B1 JP S321672B1
- Authority
- JP
- Japan
- 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.)
- Pending
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
- H02H3/307—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 comparison of quantities derived from a plurality of phases, e.g. homopolar quantities; using mixing transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA609481A CA609481A (en) | 1954-10-22 | High-speed current-comparison relay scheme | |
| US46390954 US2917674A (en) | 1954-10-22 | 1954-10-22 | High-speed current-comparison relay scheme |
| JP2782955A JPS321672B1 (forum.php) | 1954-10-22 | 1955-10-22 |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA609481T | |||
| US46390954 US2917674A (en) | 1954-10-22 | 1954-10-22 | High-speed current-comparison relay scheme |
| JP2782955A JPS321672B1 (forum.php) | 1954-10-22 | 1955-10-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS321672B1 true JPS321672B1 (forum.php) | 1957-03-12 |
Family
ID=53040315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2782955A Pending JPS321672B1 (forum.php) | 1954-10-22 | 1955-10-22 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2917674A (forum.php) |
| JP (1) | JPS321672B1 (forum.php) |
| CA (1) | CA609481A (forum.php) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3176190A (en) * | 1960-12-16 | 1965-03-30 | Gen Electric | Phase-comparison protective relaying system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2275941A (en) * | 1940-08-03 | 1942-03-10 | Westinghouse Electric & Mfg Co | Pilot-channel protective relaying system |
| US2406616A (en) * | 1942-12-08 | 1946-08-27 | Westinghouse Electric Corp | Carrier-current protective relaying system |
| US2408868A (en) * | 1944-05-10 | 1946-10-08 | Westinghouse Electric Corp | Carrier-current phase-angle relaying system |
| US2594371A (en) * | 1946-06-14 | 1952-04-29 | Robert I Ward | Differential protective relaying system |
| US2539444A (en) * | 1947-06-30 | 1951-01-30 | Westinghouse Electric Corp | Carrier-current phase-angle relaying system |
| US2710368A (en) * | 1950-07-25 | 1955-06-07 | Donald L Wylie | Electronic differential relay systems |
-
0
- CA CA609481A patent/CA609481A/en not_active Expired
-
1954
- 1954-10-22 US US46390954 patent/US2917674A/en not_active Expired - Lifetime
-
1955
- 1955-10-22 JP JP2782955A patent/JPS321672B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CA609481A (en) | 1960-11-29 |
| US2917674A (en) | 1959-12-15 |