CH524908A - Protective device for liquid-cooled electrical apparatus - Google Patents
Protective device for liquid-cooled electrical apparatusInfo
- Publication number
- CH524908A CH524908A CH1442171A CH1442171A CH524908A CH 524908 A CH524908 A CH 524908A CH 1442171 A CH1442171 A CH 1442171A CH 1442171 A CH1442171 A CH 1442171A CH 524908 A CH524908 A CH 524908A
- Authority
- CH
- Switzerland
- Prior art keywords
- liquid
- protective device
- electrical apparatus
- cooled electrical
- cooled
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/64—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
- G01F23/72—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using magnetically actuated indicating means
- G01F23/74—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using magnetically actuated indicating means for sensing changes in level only at discrete points
-
- 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
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
- H01H36/02—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding actuated by movement of a float carrying a magnet
-
- 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
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/044—Checking correct functioning of protective arrangements, e.g. by simulating a fault
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Level Indicators Using A Float (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Motor Or Generator Cooling System (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2049972A DE2049972C3 (en) | 1970-10-12 | 1970-10-12 | Protection device for liquid-cooled transformers and chokes |
Publications (1)
Publication Number | Publication Date |
---|---|
CH524908A true CH524908A (en) | 1972-06-30 |
Family
ID=5784835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1442171A CH524908A (en) | 1970-10-12 | 1971-10-04 | Protective device for liquid-cooled electrical apparatus |
Country Status (12)
Country | Link |
---|---|
AT (2) | AT306845B (en) |
BE (1) | BE773776A (en) |
CH (1) | CH524908A (en) |
DE (1) | DE2049972C3 (en) |
DK (1) | DK137152C (en) |
ES (1) | ES198544Y (en) |
FI (1) | FI55920C (en) |
FR (1) | FR2109996A5 (en) |
GB (1) | GB1346633A (en) |
NL (1) | NL166826C (en) |
NO (1) | NO128042B (en) |
SE (1) | SE369805B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS601568B2 (en) * | 1979-06-07 | 1985-01-16 | 日産自動車株式会社 | Liquid level alarm device |
DD207645A3 (en) * | 1982-02-04 | 1984-03-07 | Dietrich Kroll | STORAGE FLAP FOR PROTECTIVE EQUIPMENT |
FR2684248B1 (en) * | 1991-11-22 | 1997-04-30 | Pioch Sa | ELECTRONIC APPARATUS FOR MEASURING AND PROTECTING THE OPERATION OF THE OIL TRANSFORMER. |
DE102010008066B3 (en) | 2010-02-16 | 2011-03-31 | Maschinenfabrik Reinhausen Gmbh | Buchholz relay |
EP2724357B1 (en) * | 2011-06-22 | 2016-03-16 | Maschinenfabrik Reinhausen GmbH | Buchholz relay |
DE202011109908U1 (en) | 2011-06-22 | 2012-06-28 | Maschinenfabrik Reinhausen Gmbh | Buchholz relay |
ES2560814T3 (en) * | 2012-07-20 | 2016-02-22 | Abb Technology Ag | Safety device for an energy transformer, and related power transformer using said safety device |
-
1970
- 1970-10-12 DE DE2049972A patent/DE2049972C3/en not_active Expired
-
1971
- 1971-05-18 GB GB1556471*[A patent/GB1346633A/en not_active Expired
- 1971-10-01 FI FI2746/71A patent/FI55920C/en active
- 1971-10-04 CH CH1442171A patent/CH524908A/en not_active IP Right Cessation
- 1971-10-04 DK DK481071A patent/DK137152C/en active
- 1971-10-04 NO NO03626/71*[A patent/NO128042B/no unknown
- 1971-10-05 ES ES1971198544U patent/ES198544Y/en not_active Expired
- 1971-10-07 AT AT867471A patent/AT306845B/en not_active IP Right Cessation
- 1971-10-07 AT AT740872A patent/AT314034B/en not_active IP Right Cessation
- 1971-10-08 SE SE12805/71A patent/SE369805B/xx unknown
- 1971-10-11 BE BE773776A patent/BE773776A/en unknown
- 1971-10-11 NL NL7113906.A patent/NL166826C/en not_active IP Right Cessation
- 1971-10-12 FR FR7136648A patent/FR2109996A5/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2049972C3 (en) | 1973-09-13 |
NO128042B (en) | 1973-09-17 |
DE2049972A1 (en) | 1972-04-13 |
AT314034B (en) | 1974-03-11 |
AT306845B (en) | 1973-04-25 |
FI55920B (en) | 1979-06-29 |
SE369805B (en) | 1974-09-16 |
DK137152C (en) | 1978-06-19 |
DK137152B (en) | 1978-01-23 |
FI55920C (en) | 1979-10-10 |
ES198544Y (en) | 1975-11-16 |
NL166826B (en) | 1981-04-15 |
FR2109996A5 (en) | 1972-05-26 |
NL7113906A (en) | 1972-04-14 |
DE2049972B2 (en) | 1973-03-01 |
GB1346633A (en) | 1974-02-13 |
ES198544U (en) | 1975-06-16 |
BE773776A (en) | 1972-01-31 |
NL166826C (en) | 1981-09-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |