BE773776A - PROTECTION DEVICE FOR ELECTRICAL DEVICES COOLED BY LIQUID - Google Patents

PROTECTION DEVICE FOR ELECTRICAL DEVICES COOLED BY LIQUID

Info

Publication number
BE773776A
BE773776A BE773776A BE773776A BE773776A BE 773776 A BE773776 A BE 773776A BE 773776 A BE773776 A BE 773776A BE 773776 A BE773776 A BE 773776A BE 773776 A BE773776 A BE 773776A
Authority
BE
Belgium
Prior art keywords
liquid
protection device
electrical devices
devices cooled
cooled
Prior art date
Application number
BE773776A
Other languages
French (fr)
Original Assignee
Transformatoren Union Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Transformatoren Union Ag filed Critical Transformatoren Union Ag
Publication of BE773776A publication Critical patent/BE773776A/en

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)
BE773776A 1970-10-12 1971-10-11 PROTECTION DEVICE FOR ELECTRICAL DEVICES COOLED BY LIQUID BE773776A (en)

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
BE773776A true BE773776A (en) 1972-01-31

Family

ID=5784835

Family Applications (1)

Application Number Title Priority Date Filing Date
BE773776A BE773776A (en) 1970-10-12 1971-10-11 PROTECTION DEVICE FOR ELECTRICAL DEVICES COOLED BY LIQUID

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)

* Cited by examiner, † Cited by third party
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
CN103620719B (en) * 2011-06-22 2016-07-13 赖茵豪森机械制造公司 Buchholz relay
DE202011109908U1 (en) 2011-06-22 2012-06-28 Maschinenfabrik Reinhausen Gmbh Buchholz relay
EP2688081B1 (en) * 2012-07-20 2015-11-04 ABB Technology AG Safety device for a power transformer, and related power transformer using such a safety device

Also Published As

Publication number Publication date
FR2109996A5 (en) 1972-05-26
ES198544U (en) 1975-06-16
FI55920C (en) 1979-10-10
DE2049972B2 (en) 1973-03-01
AT306845B (en) 1973-04-25
DE2049972C3 (en) 1973-09-13
SE369805B (en) 1974-09-16
DK137152C (en) 1978-06-19
NO128042B (en) 1973-09-17
DE2049972A1 (en) 1972-04-13
NL7113906A (en) 1972-04-14
DK137152B (en) 1978-01-23
NL166826C (en) 1981-09-15
ES198544Y (en) 1975-11-16
GB1346633A (en) 1974-02-13
CH524908A (en) 1972-06-30
NL166826B (en) 1981-04-15
AT314034B (en) 1974-03-11
FI55920B (en) 1979-06-29

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