DE69938946D1 - Verbessertes Buchholz Relais - Google Patents

Verbessertes Buchholz Relais

Info

Publication number
DE69938946D1
DE69938946D1 DE69938946T DE69938946T DE69938946D1 DE 69938946 D1 DE69938946 D1 DE 69938946D1 DE 69938946 T DE69938946 T DE 69938946T DE 69938946 T DE69938946 T DE 69938946T DE 69938946 D1 DE69938946 D1 DE 69938946D1
Authority
DE
Germany
Prior art keywords
buchholz relay
improved
type
flap
frame
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 - Lifetime
Application number
DE69938946T
Other languages
German (de)
English (en)
Inventor
Lago Silvio Dal
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.)
Comem SpA
Original Assignee
Comem SpA
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 Comem SpA filed Critical Comem SpA
Application granted granted Critical
Publication of DE69938946D1 publication Critical patent/DE69938946D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H01H35/405—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 the switch being of the reed switch type
    • 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
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Organic Insulating Materials (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
DE69938946T 1998-03-19 1999-03-12 Verbessertes Buchholz Relais Expired - Lifetime DE69938946D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT98PD000059A ITPD980059A1 (it) 1998-03-19 1998-03-19 Rele' perfezionato di tipo buchholz

Publications (1)

Publication Number Publication Date
DE69938946D1 true DE69938946D1 (de) 2008-08-07

Family

ID=11392109

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69938946T Expired - Lifetime DE69938946D1 (de) 1998-03-19 1999-03-12 Verbessertes Buchholz Relais

Country Status (5)

Country Link
EP (1) EP0944150B1 (it)
AT (1) ATE399384T1 (it)
DE (1) DE69938946D1 (it)
ES (1) ES2310020T3 (it)
IT (1) ITPD980059A1 (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002100385A4 (en) * 2002-05-15 2002-06-20 John Owen Williams Improvement to the design and construction of a Buchholz type relay for transformer protection
ITVI20070223A1 (it) * 2007-08-07 2009-02-08 Comem Spa Rele di buchholz per la protezione di apparecchiature elettriche di potenza isolate in olio.
EP2737499A1 (en) * 2011-07-25 2014-06-04 ABB Technology AG Safety apparatus and monitoring method for a power transformer, and related power transformer
EP2669910B1 (en) * 2012-05-31 2015-07-01 ABB Technology AG Safety device for electrical transformers and related electrical transformer
CN104134576A (zh) * 2014-07-16 2014-11-05 国家电网公司 三引脚干簧管型双路跳闸节点瓦斯继电器
EP3098827B1 (en) * 2015-05-26 2018-10-17 ABB Schweiz AG Flow vent adjustable system for buchholz relay

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2952753A (en) * 1958-06-27 1960-09-13 Mcdonnell & Miller Inc Flow switch
ES324856A1 (es) * 1965-03-30 1967-02-16 Licentia Patent-Verwaltungs G M B H Sistema de vigilancia y de desconexion para aparatos electricos con aislamiento liquido.
US4282413A (en) * 1979-07-02 1981-08-04 Grunau Company, Inc. Liquid flow indicator
DD207645A3 (de) * 1982-02-04 1984-03-07 Dietrich Kroll Stauklappe fuer schutzeinrichtungen

Also Published As

Publication number Publication date
EP0944150A2 (en) 1999-09-22
EP0944150A3 (en) 2000-06-07
ATE399384T1 (de) 2008-07-15
ITPD980059A1 (it) 1999-09-19
EP0944150B1 (en) 2008-06-25
ES2310020T3 (es) 2008-12-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition