ZA784712B - Detecting a short circuit fault in a dynamo electric machine - Google Patents
Detecting a short circuit fault in a dynamo electric machineInfo
- Publication number
- ZA784712B ZA784712B ZA00784712A ZA784712A ZA784712B ZA 784712 B ZA784712 B ZA 784712B ZA 00784712 A ZA00784712 A ZA 00784712A ZA 784712 A ZA784712 A ZA 784712A ZA 784712 B ZA784712 B ZA 784712B
- Authority
- ZA
- South Africa
- Prior art keywords
- detecting
- electric machine
- short circuit
- circuit fault
- dynamo electric
- Prior art date
Links
Classifications
-
- 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
- G01R19/06—Measuring real component; Measuring reactive component
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/04—Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks
-
- 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
- H02H3/38—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 both voltage and current; responsive to phase angle between voltage and current
- H02H3/382—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 both voltage and current; responsive to phase angle between voltage and current involving phase comparison between current and voltage or between values derived from current and voltage
-
- 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
- H02H7/08—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 for dynamo-electric motors
- H02H7/085—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 for dynamo-electric motors against excessive load
- H02H7/0855—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 for dynamo-electric motors against excessive load avoiding response to transient overloads, e.g. during starting
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Protection Of Generators And Motors (AREA)
- Control Of Ac Motors In General (AREA)
- Rectifiers (AREA)
- Control Of Eletrric Generators (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3590777 | 1977-08-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA784712B true ZA784712B (en) | 1979-08-29 |
Family
ID=10382873
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA00784712A ZA784712B (en) | 1977-08-26 | 1978-08-18 | Detecting a short circuit fault in a dynamo electric machine |
Country Status (7)
Country | Link |
---|---|
US (1) | US4187523A (fr) |
EP (1) | EP0001003A3 (fr) |
AU (1) | AU3915778A (fr) |
DE (1) | DE2857295A1 (fr) |
FR (1) | FR2427721A1 (fr) |
NL (1) | NL7815033A (fr) |
ZA (1) | ZA784712B (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2128425B (en) * | 1982-10-08 | 1986-06-25 | Newelec Pretoria | Stall detection apparatus |
EP0276401A3 (fr) * | 1983-07-11 | 1989-04-12 | Square D Company | Automate manométrique à actionnement mécanique ayant des composants à l'état solide |
AU584935B2 (en) * | 1984-11-01 | 1989-06-08 | Paulus Antonius Stigter | Controller for induction motor |
US5459444A (en) * | 1991-05-16 | 1995-10-17 | Felchar Manufacturing Corporation | Circuit breaker for use in wall mounted plug |
US5177657A (en) * | 1991-05-16 | 1993-01-05 | Felchar Manufacturing Corporation | Ground fault interruptor circuit with electronic latch |
US5151638A (en) * | 1991-08-12 | 1992-09-29 | Atlas Roll-Lite Door Corporation | Motor overload indicating arrangement |
GB2395377B (en) * | 2002-11-13 | 2006-02-01 | Frdx Ltd | Fault detection apparatus and method |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE832168C (de) * | 1940-10-20 | 1952-02-21 | Siemens Schuckertwerke A G | Einrichtung zur Abgabe einer Meldung oder eines Kommandos zum Abschalten eines Drehstrommotors bei UEberschreitung einer bestimmten Belastung |
US2425133A (en) * | 1944-03-31 | 1947-08-05 | Budd Co | Power factor indicating apparatus |
US2462799A (en) * | 1945-03-21 | 1949-02-22 | Rca Corp | Control circuits |
US2722648A (en) * | 1953-03-02 | 1955-11-01 | Machinery Electrification Inc | Alternating current load control system |
US2829343A (en) * | 1956-06-22 | 1958-04-01 | Daystrom Inc | Load meter |
GB1138615A (en) * | 1965-03-22 | 1969-01-01 | English Electric Co Ltd | Electrical protective relay arrangement |
US3590322A (en) * | 1970-02-12 | 1971-06-29 | Sci Systems Inc | Medical instrumentation system |
US3697811A (en) * | 1971-09-10 | 1972-10-10 | Gen Electric | Static network protective relay |
DE2622309C3 (de) * | 1976-05-19 | 1979-05-03 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Schutzeinrichtung für eine bürstenlose Synchronmaschine |
-
1978
- 1978-08-18 EP EP78300297A patent/EP0001003A3/fr not_active Withdrawn
- 1978-08-18 NL NL7815033A patent/NL7815033A/xx unknown
- 1978-08-18 DE DE19782857295 patent/DE2857295A1/de active Pending
- 1978-08-18 ZA ZA00784712A patent/ZA784712B/xx unknown
- 1978-08-21 US US05/934,742 patent/US4187523A/en not_active Expired - Lifetime
- 1978-08-22 AU AU39157/78A patent/AU3915778A/en active Pending
-
1979
- 1979-07-09 FR FR7917965A patent/FR2427721A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP0001003A2 (fr) | 1979-03-07 |
AU3915778A (en) | 1980-02-28 |
EP0001003A3 (fr) | 1979-03-21 |
US4187523A (en) | 1980-02-05 |
DE2857295A1 (de) | 1980-04-17 |
NL7815033A (nl) | 1979-09-28 |
FR2427721A1 (fr) | 1979-12-28 |
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