GB2012505B - Protective relaying apparatus - Google Patents
Protective relaying apparatusInfo
- Publication number
- GB2012505B GB2012505B GB79866A GB7900866A GB2012505B GB 2012505 B GB2012505 B GB 2012505B GB 79866 A GB79866 A GB 79866A GB 7900866 A GB7900866 A GB 7900866A GB 2012505 B GB2012505 B GB 2012505B
- Authority
- GB
- United Kingdom
- Prior art keywords
- protective relaying
- relaying apparatus
- protective
- relaying
- Prior art date
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/30—Staggered disconnection
-
- 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
- H02H3/402—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 using homopolar quantities
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US86878978A | 1978-01-12 | 1978-01-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2012505A GB2012505A (en) | 1979-07-25 |
GB2012505B true GB2012505B (en) | 1982-04-28 |
Family
ID=25352322
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB79866A Expired GB2012505B (en) | 1978-01-12 | 1979-01-10 | Protective relaying apparatus |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS5497748A (en) |
BR (1) | BR7900098A (en) |
DE (1) | DE2900654A1 (en) |
ES (1) | ES476633A1 (en) |
FR (1) | FR2414810A1 (en) |
GB (1) | GB2012505B (en) |
IT (1) | IT1110058B (en) |
MX (1) | MX145530A (en) |
SE (1) | SE436237B (en) |
ZA (1) | ZA79137B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63179736U (en) * | 1987-05-14 | 1988-11-21 | ||
SE459059B (en) * | 1987-09-16 | 1989-05-29 | Asea Ab | PROTECT FOR HIGH-RESISTANT EARTH ERRORS |
DE4439499C2 (en) * | 1994-10-27 | 1998-01-29 | Siemens Ag | Method for detecting an earth short on an electrical power transmission line |
US6453248B1 (en) * | 1998-07-21 | 2002-09-17 | Abb Inc. | High impedance fault detection |
AU755700B2 (en) * | 1999-11-29 | 2002-12-19 | Canon Kabushiki Kaisha | Power generation system, and method for installing the same |
ES2323994B1 (en) * | 2006-10-25 | 2010-05-13 | Universidad Del Pais Vasco-Euskal Herriko Unibertsitatea | ELECTRICAL LINE PROTECTION SYSTEM TO DETERMINE THE SENSE IN WHICH A FAILURE IS PRODUCED. |
FI126892B (en) | 2016-05-23 | 2017-07-31 | Emtele Oy | Felströmindikator |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3539866A (en) * | 1967-10-11 | 1970-11-10 | Federal Pacific Electric Co | Multi-zone fault protection systems |
-
1979
- 1979-01-08 ES ES476633A patent/ES476633A1/en not_active Expired
- 1979-01-09 BR BR7900098A patent/BR7900098A/en unknown
- 1979-01-10 GB GB79866A patent/GB2012505B/en not_active Expired
- 1979-01-10 MX MX176245A patent/MX145530A/en unknown
- 1979-01-10 DE DE19792900654 patent/DE2900654A1/en not_active Withdrawn
- 1979-01-11 JP JP106879A patent/JPS5497748A/en active Pending
- 1979-01-11 SE SE7900254A patent/SE436237B/en unknown
- 1979-01-12 FR FR7900814A patent/FR2414810A1/en active Pending
- 1979-01-12 ZA ZA00790137A patent/ZA79137B/en unknown
- 1979-01-12 IT IT19231/79A patent/IT1110058B/en active
Also Published As
Publication number | Publication date |
---|---|
GB2012505A (en) | 1979-07-25 |
BR7900098A (en) | 1979-08-07 |
IT7919231A0 (en) | 1979-01-12 |
ZA79137B (en) | 1979-12-27 |
SE7900254L (en) | 1979-09-14 |
SE436237B (en) | 1984-11-19 |
FR2414810A1 (en) | 1979-08-10 |
JPS5497748A (en) | 1979-08-02 |
IT1110058B (en) | 1985-12-23 |
MX145530A (en) | 1982-03-02 |
ES476633A1 (en) | 1979-12-01 |
DE2900654A1 (en) | 1979-07-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB2025378B (en) | Docufeeding apparatus | |
JPS54115147A (en) | Electrochrom apparatus | |
ZA792886B (en) | Apparatus | |
DE2962020D1 (en) | Egg-collecting apparatus | |
YU221078A (en) | Arosol apparatus | |
AU4277278A (en) | Apparatus | |
EP0004706A3 (en) | Wire-guidance apparatus | |
GB2036477B (en) | Protective relaying devices | |
GB2012505B (en) | Protective relaying apparatus | |
GB2034171B (en) | Protective devices | |
GB2038585B (en) | Duct-tracing apparatus | |
GB2021971B (en) | Piperting apparatus | |
GB2026325B (en) | Protective breathing apparatus | |
JPS5526067A (en) | Protective relay unit | |
GB2099362B (en) | Sheet-laminating apparatus | |
GB2024273B (en) | Blow-texturing apparatus | |
JPS5526062A (en) | Protective relay unit | |
JPS5497120A (en) | Videooeducational apparatus | |
JPS555063A (en) | Protective relay device | |
GB2037891B (en) | Oxygengenerating apparatus | |
JPS5519303A (en) | Crossstie apparatus | |
JPS555061A (en) | Protective relay device | |
PL119896B2 (en) | Apparatus for manufacturing protective wiresloki | |
JPS5523779A (en) | Protective relay unit | |
JPS54142336A (en) | Covering apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |