ZA863230B - Symmetrical fault current detector - Google Patents
Symmetrical fault current detectorInfo
- Publication number
- ZA863230B ZA863230B ZA863230A ZA863230A ZA863230B ZA 863230 B ZA863230 B ZA 863230B ZA 863230 A ZA863230 A ZA 863230A ZA 863230 A ZA863230 A ZA 863230A ZA 863230 B ZA863230 B ZA 863230B
- Authority
- ZA
- South Africa
- Prior art keywords
- current
- symmetrical
- currents
- excess
- conductor
- Prior art date
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
- H02H3/08—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 excess current
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08512746A GB2175469B (en) | 1985-05-20 | 1985-05-20 | Symmetrical fault current detector |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA863230B true ZA863230B (en) | 1986-12-30 |
Family
ID=10579413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA863230A ZA863230B (en) | 1985-05-20 | 1986-04-30 | Symmetrical fault current detector |
Country Status (8)
Country | Link |
---|---|
US (2) | US4797775A (xx) |
EP (1) | EP0202767B1 (xx) |
AT (1) | ATE82441T1 (xx) |
BR (1) | BR8602235A (xx) |
CA (1) | CA1287110C (xx) |
DE (1) | DE3687084T2 (xx) |
GB (1) | GB2175469B (xx) |
ZA (1) | ZA863230B (xx) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5117325A (en) * | 1990-01-23 | 1992-05-26 | Cooper Industries, Inc. | Controllable recloser for power line |
WO2015031069A1 (en) | 2013-08-26 | 2015-03-05 | Micropac Industries, Inc. | Power controller |
AU2019308235A1 (en) | 2018-07-17 | 2021-02-04 | Hubbell Incorporated | Voltage harvester for power distribution system devices |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2316289A (en) * | 1941-08-29 | 1943-04-13 | Per N Sandstrom | Current responsive protective relay system |
DE1463006C3 (de) * | 1963-09-10 | 1974-10-17 | Calor-Emag Elktrizitaets-Aktiengesellschaft, 4030 Ratingen | Auslöseeinrichtung für ein strombegrenzendes Schaltgerät |
US3956670A (en) * | 1973-01-30 | 1976-05-11 | Westinghouse Electric Corporation | Circuit interrupter circuit including improved control |
US3962606A (en) * | 1974-10-09 | 1976-06-08 | General Signal Corporation | Sensor for a ground fault circuit interrupter |
US4443854A (en) * | 1981-06-08 | 1984-04-17 | Electric Power Research Institute, Inc. | Current sensor responsive to symmetrical and asymmetrical currents and current limiting protector utilizing same |
FR2520165B1 (fr) * | 1982-01-18 | 1986-02-07 | Claude Sa | Interrupteur differentiel a usage domestique |
US4454557A (en) * | 1982-04-15 | 1984-06-12 | Mcgraw-Edison Company | Non-linear alternating current transducer |
GB2120876B (en) * | 1982-05-28 | 1985-11-06 | Electricty Council The | Sectionaliser |
US4583004A (en) * | 1983-09-22 | 1986-04-15 | Solidstate Controls, Inc. | Current monitoring circuit for static switch of uninterruptable power system |
-
1985
- 1985-05-20 GB GB08512746A patent/GB2175469B/en not_active Expired
-
1986
- 1986-04-16 EP EP86302854A patent/EP0202767B1/en not_active Expired - Lifetime
- 1986-04-16 DE DE8686302854T patent/DE3687084T2/de not_active Expired - Fee Related
- 1986-04-16 AT AT86302854T patent/ATE82441T1/de not_active IP Right Cessation
- 1986-04-21 US US06/854,246 patent/US4797775A/en not_active Ceased
- 1986-04-30 ZA ZA863230A patent/ZA863230B/xx unknown
- 1986-05-02 CA CA000508184A patent/CA1287110C/en not_active Expired - Fee Related
- 1986-05-16 BR BR8602235A patent/BR8602235A/pt unknown
-
1991
- 1991-03-12 US US07/668,101 patent/USRE34163E/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
USRE34163E (en) | 1993-01-19 |
BR8602235A (pt) | 1987-01-13 |
GB8512746D0 (en) | 1985-06-26 |
CA1287110C (en) | 1991-07-30 |
EP0202767A2 (en) | 1986-11-26 |
DE3687084T2 (de) | 1993-04-08 |
AU5651886A (en) | 1986-11-27 |
AU595797B2 (en) | 1990-04-12 |
DE3687084D1 (de) | 1992-12-17 |
GB2175469A (en) | 1986-11-26 |
EP0202767A3 (en) | 1988-01-20 |
GB2175469B (en) | 1988-10-26 |
EP0202767B1 (en) | 1992-11-11 |
ATE82441T1 (de) | 1992-11-15 |
US4797775A (en) | 1989-01-10 |
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