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FR869850A - Alarm for electrical appliances filled with oil - Google Patents

Alarm for electrical appliances filled with oil

Info

Publication number
FR869850A
FR869850A FR869850DA FR869850A FR 869850 A FR869850 A FR 869850A FR 869850D A FR869850D A FR 869850DA FR 869850 A FR869850 A FR 869850A
Authority
FR
France
Prior art keywords
alarm
filled
oil
electrical appliances
appliances
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
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hermes Patentverwertungs GmbH
Original Assignee
Hermes Patentverwertungs GmbH
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 Hermes Patentverwertungs GmbH filed Critical Hermes Patentverwertungs GmbH
Application granted granted Critical
Publication of FR869850A publication Critical patent/FR869850A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means
    • 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
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means
    • H01F2027/404—Protective devices specially adapted for fluid filled transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/40—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by devices allowing continual flow of fluid, e.g. vane

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
FR869850D 1939-06-07 1941-02-07 Alarm for electrical appliances filled with oil Expired FR869850A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE223859X 1939-06-07

Publications (1)

Publication Number Publication Date
FR869850A true FR869850A (en) 1942-02-20

Family

ID=5852739

Family Applications (1)

Application Number Title Priority Date Filing Date
FR869850D Expired FR869850A (en) 1939-06-07 1941-02-07 Alarm for electrical appliances filled with oil

Country Status (4)

Country Link
BE (1) BE442822A (en)
CH (1) CH223859A (en)
FR (1) FR869850A (en)
NL (1) NL55503C (en)

Also Published As

Publication number Publication date
BE442822A (en)
CH223859A (en) 1942-10-15
NL55503C (en)

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