CH594891A5 - - Google Patents
Info
- Publication number
- CH594891A5 CH594891A5 CH502976A CH502976A CH594891A5 CH 594891 A5 CH594891 A5 CH 594891A5 CH 502976 A CH502976 A CH 502976A CH 502976 A CH502976 A CH 502976A CH 594891 A5 CH594891 A5 CH 594891A5
- Authority
- CH
- Switzerland
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
- G01R27/18—Measuring resistance to earth, i.e. line to ground
-
- 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
- G01R19/145—Indicating the presence of current or voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Motor Or Generator Frames (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH502976A CH594891A5 (US08142518-20120327-C00011.png) | 1976-04-22 | 1976-04-22 | |
| DE19762621069 DE2621069A1 (de) | 1976-04-22 | 1976-05-12 | Einrichtung zum pruefen der wellen/ lager-isolation |
| US05/787,214 US4122388A (en) | 1976-04-22 | 1977-04-13 | Apparatus for testing the shaft/bearing insulation of a turbo-machine |
| SE7704406A SE416001B (sv) | 1976-04-22 | 1977-04-18 | Anordning for provning av axel/lagerisolering vid maskiner |
| NO771331A NO771331L (no) | 1976-04-22 | 1977-04-18 | Anordning for pr¦ving av aksel/lager-isolasjonen |
| FR7711835A FR2349143A1 (fr) | 1976-04-22 | 1977-04-20 | Dispositif pour la verification de l'isolation entre arbre et palier |
| CA276,718A CA1074400A (en) | 1976-04-22 | 1977-04-21 | Apparatus for testing the shaft/bearing insulation of a turbo-machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH502976A CH594891A5 (US08142518-20120327-C00011.png) | 1976-04-22 | 1976-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH594891A5 true CH594891A5 (US08142518-20120327-C00011.png) | 1978-01-31 |
Family
ID=4286728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH502976A CH594891A5 (US08142518-20120327-C00011.png) | 1976-04-22 | 1976-04-22 |
Country Status (7)
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2839246C2 (de) * | 1978-09-08 | 1983-01-05 | Siemens AG, 1000 Berlin und 8000 München | Anordnung zum Unterdrücken von HF-Strömen in Lagern von Wellen |
| DE2935218A1 (de) * | 1979-08-31 | 1981-03-26 | Barmag Ag, 42897 Remscheid | Spindel fuer hohe drehzahlen |
| US5032826A (en) * | 1987-10-29 | 1991-07-16 | Westinghouse Electric Corp. | Core monitor that uses rotor shaft voltages |
| US4851949A (en) * | 1988-06-13 | 1989-07-25 | Westinghouse Electric Corp. | Brush bounce detection in active shaft ground system |
| US5134378A (en) * | 1991-03-08 | 1992-07-28 | Michael Twerdochlib | System and method for detecting faults in generator bearing pedestals and seal insulation |
| US6460013B1 (en) * | 1999-05-06 | 2002-10-01 | Paul I. Nippes | Shaft voltage current monitoring system for early warning and problem detection |
| DE10312254B4 (de) | 2003-03-19 | 2007-02-15 | Siemens Ag | Traktionsmotor |
| EP2708741B1 (en) * | 2012-09-12 | 2015-04-15 | Siemens Aktiengesellschaft | Method and arrangement to monitor a bearing of a wind turbine |
| US9791348B2 (en) | 2012-10-15 | 2017-10-17 | Nanolab, Inc. | Sensor for wear measurement, method for making same, and method for operating same |
| US9389195B2 (en) | 2012-10-15 | 2016-07-12 | Nanolab, Inc. | Sensor for wear measurement, method of making, and method of operating same |
| CN112763870A (zh) * | 2020-12-29 | 2021-05-07 | 河南科技大学 | 一种轴承击穿电压的测试方法及装置 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2310335A (en) * | 1941-01-10 | 1943-02-09 | Western Electric Co | Electrical apparatus |
| US2650346A (en) * | 1949-04-27 | 1953-08-25 | John P Rasor | Apparatus and method for testing pipe coating |
| US3303410A (en) * | 1964-02-07 | 1967-02-07 | Westinghouse Electric Corp | Rotating rectifier exciter ground detection arrangement |
| DE1217493B (de) * | 1964-09-25 | 1966-05-26 | Licentia Gmbh | Einrichtung zur UEberwachung von Lagerstroemen bei elektrischen Maschinen |
| DE1613886A1 (de) * | 1967-12-12 | 1971-08-12 | Siemens Ag | Einrichtung zur UEberwachung von Lagerstroemen bei elektrischen Maschinen,insbesondere grosser Leistung |
| US3746979A (en) * | 1971-07-08 | 1973-07-17 | V Kildishev | Apparatus for measuring the insulation resistance of the rotor of a brushless synchronous machine |
| US3831160A (en) * | 1973-10-01 | 1974-08-20 | Gen Electric | Voltage and current monitoring system |
| US3904940A (en) * | 1974-10-10 | 1975-09-09 | Allis Chalmers | Means for detecting ground insulation failure for rotary electric machines |
-
1976
- 1976-04-22 CH CH502976A patent/CH594891A5/xx not_active IP Right Cessation
- 1976-05-12 DE DE19762621069 patent/DE2621069A1/de not_active Withdrawn
-
1977
- 1977-04-13 US US05/787,214 patent/US4122388A/en not_active Expired - Lifetime
- 1977-04-18 SE SE7704406A patent/SE416001B/xx unknown
- 1977-04-18 NO NO771331A patent/NO771331L/no unknown
- 1977-04-20 FR FR7711835A patent/FR2349143A1/fr active Granted
- 1977-04-21 CA CA276,718A patent/CA1074400A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NO771331L (no) | 1977-10-25 |
| SE7704406L (sv) | 1977-10-23 |
| FR2349143A1 (fr) | 1977-11-18 |
| FR2349143B1 (US08142518-20120327-C00011.png) | 1982-11-19 |
| DE2621069A1 (de) | 1977-11-10 |
| CA1074400A (en) | 1980-03-25 |
| US4122388A (en) | 1978-10-24 |
| SE416001B (sv) | 1980-11-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |