NL166826C - BUCHHOLZ RELAY FOR ELECTRICAL APPLIANCES COOLED BY LIQUID. - Google Patents

BUCHHOLZ RELAY FOR ELECTRICAL APPLIANCES COOLED BY LIQUID.

Info

Publication number
NL166826C
NL166826C NL7113906.A NL7113906A NL166826C NL 166826 C NL166826 C NL 166826C NL 7113906 A NL7113906 A NL 7113906A NL 166826 C NL166826 C NL 166826C
Authority
NL
Netherlands
Prior art keywords
cooled
liquid
electrical appliances
buchholz relay
buchholz
Prior art date
Application number
NL7113906.A
Other languages
Dutch (nl)
Other versions
NL7113906A (en
NL166826B (en
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 NL7113906A publication Critical patent/NL7113906A/xx
Publication of NL166826B publication Critical patent/NL166826B/en
Application granted granted Critical
Publication of NL166826C publication Critical patent/NL166826C/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
NL7113906.A 1970-10-12 1971-10-11 BUCHHOLZ RELAY FOR ELECTRICAL APPLIANCES COOLED BY LIQUID. NL166826C (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 (3)

Publication Number Publication Date
NL7113906A NL7113906A (en) 1972-04-14
NL166826B NL166826B (en) 1981-04-15
NL166826C true NL166826C (en) 1981-09-15

Family

ID=5784835

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7113906.A NL166826C (en) 1970-10-12 1971-10-11 BUCHHOLZ RELAY FOR ELECTRICAL APPLIANCES 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
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

Also Published As

Publication number Publication date
SE369805B (en) 1974-09-16
DK137152C (en) 1978-06-19
DE2049972C3 (en) 1973-09-13
NO128042B (en) 1973-09-17
FI55920C (en) 1979-10-10
DK137152B (en) 1978-01-23
BE773776A (en) 1972-01-31
NL7113906A (en) 1972-04-14
AT306845B (en) 1973-04-25
CH524908A (en) 1972-06-30
ES198544Y (en) 1975-11-16
DE2049972B2 (en) 1973-03-01
NL166826B (en) 1981-04-15
DE2049972A1 (en) 1972-04-13
GB1346633A (en) 1974-02-13
FR2109996A5 (en) 1972-05-26
ES198544U (en) 1975-06-16
FI55920B (en) 1979-06-29
AT314034B (en) 1974-03-11

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee