CH570723A5 - - Google Patents
Info
- Publication number
- CH570723A5 CH570723A5 CH572374A CH572374A CH570723A5 CH 570723 A5 CH570723 A5 CH 570723A5 CH 572374 A CH572374 A CH 572374A CH 572374 A CH572374 A CH 572374A CH 570723 A5 CH570723 A5 CH 570723A5
- Authority
- CH
- Switzerland
Links
Classifications
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- 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
- H02H3/16—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 fault current to earth, frame or mass
- H02H3/17—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 fault current to earth, frame or mass by means of an auxiliary voltage injected into the installation to be protected
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH572374A CH570723A5 (fr) | 1974-04-26 | 1974-04-26 | |
DE19742426871 DE2426871B2 (de) | 1974-04-26 | 1974-06-04 | Erdschluss-ueberwachungseinrichtung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH572374A CH570723A5 (fr) | 1974-04-26 | 1974-04-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH570723A5 true CH570723A5 (fr) | 1975-12-15 |
Family
ID=4298282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH572374A CH570723A5 (fr) | 1974-04-26 | 1974-04-26 |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH570723A5 (fr) |
DE (1) | DE2426871B2 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3112952C2 (de) * | 1981-03-31 | 1994-05-05 | Walther Bender Gmbh & Co Kg Di | Verfahren und Einrichtung zum Bestimmen der Gesamtableitungsimpedanz in einem ungeerdeten Wechselstromnetz |
DE3920177A1 (de) * | 1989-06-16 | 1990-12-20 | Licentia Gmbh | Verfahren und anordnung zur erdschlusserfassung in nicht geerdeten mehrphasigen versorgungsnetzen, insbesondere hoeherer betriebsspannung |
DE4234808A1 (de) * | 1992-10-15 | 1994-04-21 | Walther Bender Gmbh & Co Kg Di | Verfahren zum Bestimmen der elektrischen Netzableitgrößen in ungeerdeten elektrischen Netzen |
AT402770B (de) * | 1995-04-25 | 1997-08-25 | Haefely Trench Austria Gmbh | Verfahren zum überwachen eines drehstromnetzes auf eine abstimmungsänderung der erdschlusslöschspule |
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1974
- 1974-04-26 CH CH572374A patent/CH570723A5/xx not_active IP Right Cessation
- 1974-06-04 DE DE19742426871 patent/DE2426871B2/de not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
DE2426871B2 (de) | 1977-02-24 |
DE2426871A1 (de) | 1975-10-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |