IL42142A - A detector for detecting incipient phase-asymmetry - Google Patents
A detector for detecting incipient phase-asymmetryInfo
- Publication number
- IL42142A IL42142A IL42142A IL4214273A IL42142A IL 42142 A IL42142 A IL 42142A IL 42142 A IL42142 A IL 42142A IL 4214273 A IL4214273 A IL 4214273A IL 42142 A IL42142 A IL 42142A
- Authority
- IL
- Israel
- Prior art keywords
- output
- detector according
- frequencies
- detector
- phase
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/16—Measuring asymmetry of polyphase networks
-
- 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
- H02H7/09—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 over-voltage; against reduction of voltage; against phase interruption
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Protection Of Generators And Motors (AREA)
- Control Of Ac Motors In General (AREA)
- Emergency Protection Circuit Devices (AREA)
- Stopping Of Electric Motors (AREA)
- Control Of Electric Motors In General (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL42142A IL42142A (en) | 1973-04-30 | 1973-04-30 | A detector for detecting incipient phase-asymmetry |
GB1499274A GB1467520A (en) | 1973-04-30 | 1974-04-04 | Protective circuit for protecting a 3-phase rotary machine from the effects of phase-asymmetry |
US05/463,199 US3970897A (en) | 1973-04-30 | 1974-04-22 | Detector and apparatus incorporating the same for detecting phase-asymmetry and protecting three-phase motors against dangerous operating conditions |
JP49046739A JPS50124140A (de) | 1973-04-30 | 1974-04-26 | |
DE2420199A DE2420199A1 (de) | 1973-04-30 | 1974-04-26 | Detektor zum feststellen von phasenunsymmetrien bei einer dreiphasen-rotationsmaschine und vorrichtung zum schutz der maschine vor gefaehrlichen betriebsbedingungen |
FR7414863A FR2227536B1 (de) | 1973-04-30 | 1974-04-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL42142A IL42142A (en) | 1973-04-30 | 1973-04-30 | A detector for detecting incipient phase-asymmetry |
Publications (2)
Publication Number | Publication Date |
---|---|
IL42142A0 IL42142A0 (en) | 1973-06-29 |
IL42142A true IL42142A (en) | 1976-05-31 |
Family
ID=11047092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL42142A IL42142A (en) | 1973-04-30 | 1973-04-30 | A detector for detecting incipient phase-asymmetry |
Country Status (6)
Country | Link |
---|---|
US (1) | US3970897A (de) |
JP (1) | JPS50124140A (de) |
DE (1) | DE2420199A1 (de) |
FR (1) | FR2227536B1 (de) |
GB (1) | GB1467520A (de) |
IL (1) | IL42142A (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7807064A (nl) * | 1977-07-09 | 1979-01-11 | Struever Kg Ad | Inrichting voor het controleren van een net. |
US4179744A (en) * | 1978-03-02 | 1979-12-18 | Magtronics Incorporated | Method and apparatus for analyzing performance of electric-traction-motor powered vehicles and electrical operating components thereof |
US4376295A (en) * | 1979-01-11 | 1983-03-08 | Fuji Electric Co. Ltd. | System for predicting desynchronization of a synchronous machine |
US4406984A (en) * | 1980-02-07 | 1983-09-27 | Southern California Edison Company | Current responsive devices for synchronous generators |
US4331882A (en) * | 1980-03-17 | 1982-05-25 | Electric Power Research Institute, Inc. | Method and means for detecting spurious electrical signals in an electrical power system |
US4453190A (en) * | 1982-04-23 | 1984-06-05 | Pavlodarsky Industrialny Institut | Method of short circuit protection of electrical three-phase machine and device therefor |
US4639817A (en) * | 1984-05-15 | 1987-01-27 | Westinghouse Electric Corp. | Protective relay circuit for detecting arcing faults on low-voltage spot networks |
US4607309A (en) * | 1984-05-15 | 1986-08-19 | Westinghouse Electric Corp. | Apparatus for detecting arcing faults on low-voltage spot networks |
JPH0729703Y2 (ja) * | 1987-01-19 | 1995-07-05 | ダイキン工業株式会社 | 誘導機の停止制御装置 |
US5321635A (en) * | 1992-09-02 | 1994-06-14 | Alliedsignal Inc. | Synchro drive stabilization system |
US5612601A (en) * | 1993-11-22 | 1997-03-18 | Martin Marietta Energy Systems, Inc. | Method for assessing motor insulation on operating motors |
US7170249B2 (en) * | 2003-06-06 | 2007-01-30 | Seagate Technology Llc | Electrical phase compensation in BEMF spindle motor control |
US20040245950A1 (en) * | 2003-06-06 | 2004-12-09 | Ang June Christian | Electrical phase compensation in BEMF spindle motor control |
JP4238273B2 (ja) * | 2007-07-02 | 2009-03-18 | ファナック株式会社 | 制御装置 |
AU2008321378B2 (en) * | 2007-11-13 | 2012-04-12 | Emerson Climate Technologies, Inc. | Three-phase detection module |
JP4877397B2 (ja) * | 2010-01-22 | 2012-02-15 | 株式会社デンソー | 電流センサの異常診断装置、およびセンサの異常診断装置 |
CN102200558A (zh) * | 2010-03-25 | 2011-09-28 | 鸿富锦精密工业(深圳)有限公司 | 开/关机检测电路 |
TWI499193B (zh) * | 2013-08-16 | 2015-09-01 | Univ Nat Cheng Kung | 電力轉換裝置及其控制方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3144590A (en) * | 1958-06-13 | 1964-08-11 | Westinghouse Electric Corp | Frequency selective networks |
US3223889A (en) * | 1963-01-22 | 1965-12-14 | Jr Edmund O Schweitzer | Means for protecting power circuits and the like |
US3337772A (en) * | 1963-12-28 | 1967-08-22 | Asea Ab | Transformer differential protection |
IL26240A (en) * | 1966-07-31 | 1971-10-20 | Erlicki M | Protective device for alternating-current motors against supply asymmetry |
GB1169706A (en) * | 1966-09-29 | 1969-11-05 | English Electric Co Ltd | An Electrical Fault Detector |
US3579040A (en) * | 1969-02-18 | 1971-05-18 | Westinghouse Electric Corp | Desensitizing circuit for differential relay |
US3832600A (en) * | 1973-05-17 | 1974-08-27 | Westinghouse Electric Corp | Transformer internal fault detector |
-
1973
- 1973-04-30 IL IL42142A patent/IL42142A/en unknown
-
1974
- 1974-04-04 GB GB1499274A patent/GB1467520A/en not_active Expired
- 1974-04-22 US US05/463,199 patent/US3970897A/en not_active Expired - Lifetime
- 1974-04-26 DE DE2420199A patent/DE2420199A1/de active Pending
- 1974-04-26 JP JP49046739A patent/JPS50124140A/ja active Pending
- 1974-04-29 FR FR7414863A patent/FR2227536B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS50124140A (de) | 1975-09-30 |
IL42142A0 (en) | 1973-06-29 |
FR2227536B1 (de) | 1978-07-07 |
FR2227536A1 (de) | 1974-11-22 |
GB1467520A (en) | 1977-03-16 |
DE2420199A1 (de) | 1974-10-31 |
US3970897A (en) | 1976-07-20 |
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