JPS50124140A - - Google Patents
Info
- Publication number
- JPS50124140A JPS50124140A JP49046739A JP4673974A JPS50124140A JP S50124140 A JPS50124140 A JP S50124140A JP 49046739 A JP49046739 A JP 49046739A JP 4673974 A JP4673974 A JP 4673974A JP S50124140 A JPS50124140 A JP S50124140A
- 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
-
- 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)
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 (1)
| Publication Number | Publication Date |
|---|---|
| JPS50124140A true JPS50124140A (US07922777-20110412-C00004.png) | 1975-09-30 |
Family
ID=11047092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49046739A Pending JPS50124140A (US07922777-20110412-C00004.png) | 1973-04-30 | 1974-04-26 |
Country Status (6)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63117236U (US07922777-20110412-C00004.png) * | 1987-01-19 | 1988-07-28 |
Families Citing this family (17)
| 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 |
| 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 JP JP49046739A patent/JPS50124140A/ja active Pending
- 1974-04-26 DE DE2420199A patent/DE2420199A1/de active Pending
- 1974-04-29 FR FR7414863A patent/FR2227536B1/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63117236U (US07922777-20110412-C00004.png) * | 1987-01-19 | 1988-07-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2227536A1 (US07922777-20110412-C00004.png) | 1974-11-22 |
| IL42142A (en) | 1976-05-31 |
| IL42142A0 (en) | 1973-06-29 |
| GB1467520A (en) | 1977-03-16 |
| FR2227536B1 (US07922777-20110412-C00004.png) | 1978-07-07 |
| US3970897A (en) | 1976-07-20 |
| DE2420199A1 (de) | 1974-10-31 |
