FR643137A - Process for the protection of transformers, feedback coils, switches, motors, generators and other electrical devices - Google Patents
Process for the protection of transformers, feedback coils, switches, motors, generators and other electrical devicesInfo
- Publication number
- FR643137A FR643137A FR643137DA FR643137A FR 643137 A FR643137 A FR 643137A FR 643137D A FR643137D A FR 643137DA FR 643137 A FR643137 A FR 643137A
- Authority
- FR
- France
- Prior art keywords
- transformers
- generators
- motors
- switches
- protection
- Prior art date
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/55—Oil reservoirs or tanks; Lowering means therefor
- H01H33/555—Protective arrangements responsive to abnormal fluid pressure, liquid level or liquid displacement, e.g. Buchholz relays
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Power Engineering (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Sampling And Sample Adjustment (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE130549X | 1926-11-02 | ||
DE280209T | 1926-11-02 | ||
DE643137X | 1926-11-02 | ||
DE261126X | 1926-11-26 | ||
DE180127X | 1927-01-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR643137A true FR643137A (en) | 1928-09-10 |
Family
ID=59522784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR643137D Expired FR643137A (en) | 1926-11-02 | 1927-10-22 | Process for the protection of transformers, feedback coils, switches, motors, generators and other electrical devices |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH130549A (en) |
FR (1) | FR643137A (en) |
GB (1) | GB280209A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE755544C (en) * | 1941-06-04 | 1953-08-31 | Siemens Schuckertwerke A G | Protective device for displaying malfunctions in liquid-filled containers, in particular electrical equipment and machine housings |
DE1171310B (en) * | 1960-02-26 | 1964-05-27 | Cerberus Ag | Fire alarm with an aerosol indicator for the detection of combustion products suspended in the air |
DE102020114596A1 (en) | 2020-06-02 | 2021-12-02 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Electric motor cooling arrangement |
-
1927
- 1927-10-22 FR FR643137D patent/FR643137A/en not_active Expired
- 1927-11-02 GB GB29268/27A patent/GB280209A/en not_active Expired
- 1927-11-02 CH CH130549D patent/CH130549A/en unknown
Also Published As
Publication number | Publication date |
---|---|
GB280209A (en) | 1928-11-08 |
CH130549A (en) | 1928-12-15 |
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