FR2416553A1 - Procede de stabilisation thermique de varistors a oxydes metalliques - Google Patents

Procede de stabilisation thermique de varistors a oxydes metalliques

Info

Publication number
FR2416553A1
FR2416553A1 FR7902858A FR7902858A FR2416553A1 FR 2416553 A1 FR2416553 A1 FR 2416553A1 FR 7902858 A FR7902858 A FR 7902858A FR 7902858 A FR7902858 A FR 7902858A FR 2416553 A1 FR2416553 A1 FR 2416553A1
Authority
FR
France
Prior art keywords
metal oxide
oxide varistors
varistors
stabilization process
thermal stabilization
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.)
Withdrawn
Application number
FR7902858A
Other languages
English (en)
Inventor
James Stanley Kresge
Richard Anthony Menelly
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of FR2416553A1 publication Critical patent/FR2416553A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Thermistors And Varistors (AREA)

Abstract

Procédé maintenant une température relativement uniforme des varistors indépendamment de la température ambiante et des conditions de tension pour des transformateurs refroidis par vapeur. Il consiste à monter au moins un des varistors à oxydes métalliques 21 en relation thermique avec ce fluide 16 utilisé pour le refroidissement de l'appareil électrique; à relier une électrode de ces varistors à oxydes métalliques avec un conducteur d'entrée de l'appareil électrique, et à relier l'autre électrode du varistor à oxydes métalliques la masse. Application aux transformateurs moyenne et haute puissance.
FR7902858A 1978-02-06 1979-02-05 Procede de stabilisation thermique de varistors a oxydes metalliques Withdrawn FR2416553A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/875,214 US4153921A (en) 1978-02-06 1978-02-06 Thermally stabilized metal oxide varistors

Publications (1)

Publication Number Publication Date
FR2416553A1 true FR2416553A1 (fr) 1979-08-31

Family

ID=25365392

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7902858A Withdrawn FR2416553A1 (fr) 1978-02-06 1979-02-05 Procede de stabilisation thermique de varistors a oxydes metalliques

Country Status (6)

Country Link
US (1) US4153921A (fr)
JP (1) JPS54116657A (fr)
BR (1) BR7900771A (fr)
DE (1) DE2904150A1 (fr)
FR (1) FR2416553A1 (fr)
SE (1) SE7900918L (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5919448B2 (ja) * 1978-03-03 1984-05-07 株式会社日立製作所 避雷器
US4604673A (en) * 1984-05-14 1986-08-05 General Electric Company Distribution transformer with surge protection device
US4779162A (en) * 1987-03-16 1988-10-18 Rte Corporation Under oil arrester
DE3826282A1 (de) * 1988-07-29 1990-02-08 Siemens Ag Elektrische maschine oder apparat mit einer wicklung, die metalloxid-widerstaende zur ueberspannungsbegrenzung aufweist, und verfahren zu ihrer herstellung
NO167618C (no) * 1989-03-20 1991-11-20 Alcatel Stk As Overspenningsavleder for elektriske apparater.
US5661280A (en) * 1995-08-02 1997-08-26 Abb Power T&D Company Inc. Combination of a gas-filled interrupter and oil-filled transformer
US6162159A (en) * 1998-08-24 2000-12-19 Martini; Calvin Duke Ticket dispenser
US7077189B1 (en) * 2005-01-21 2006-07-18 Delphi Technologies, Inc. Liquid cooled thermosiphon with flexible coolant tubes
US20060162903A1 (en) * 2005-01-21 2006-07-27 Bhatti Mohinder S Liquid cooled thermosiphon with flexible partition
US8692537B2 (en) * 2009-07-17 2014-04-08 The Invention Science Fund I, Llc Use pairs of transformers to increase transmission line voltage
US20110011621A1 (en) * 2009-07-17 2011-01-20 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Smart link coupled to power line
US8426736B2 (en) * 2009-07-17 2013-04-23 The Invention Science Fund I Llc Maintaining insulators in power transmission systems
TWI409829B (zh) * 2010-09-03 2013-09-21 Sfi Electronics Technology Inc 一種高溫使用的氧化鋅突波吸收器
EP3570299B1 (fr) * 2018-05-18 2021-08-04 ABB Schweiz AG Absorbeur d'énergie limitant la tension à récupération thermique rapide
CN115482980B (zh) * 2022-10-28 2023-11-21 云南电网有限责任公司电力科学研究院 变电站高压设备大通流氧化锌避雷器网状散热装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035209A (en) * 1957-10-11 1962-05-15 Gen Electric Transformer cover
US3227983A (en) * 1963-08-07 1966-01-04 Air Reduction Stacked resistor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2399502A (en) * 1941-03-13 1946-04-30 Gen Electric Protective holder for electric discharge devices
US3096496A (en) * 1961-05-11 1963-07-02 Mc Graw Edison Co Overvoltage protective device
SE301182B (fr) * 1964-03-12 1968-05-27 Asea Ab
US3313983A (en) * 1965-08-27 1967-04-11 Central Transformer Corp Transformers
US3450945A (en) * 1966-12-06 1969-06-17 Mc Graw Edison Co Circuit switching and protecting arrangement

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035209A (en) * 1957-10-11 1962-05-15 Gen Electric Transformer cover
US3227983A (en) * 1963-08-07 1966-01-04 Air Reduction Stacked resistor

Also Published As

Publication number Publication date
BR7900771A (pt) 1979-08-28
US4153921A (en) 1979-05-08
SE7900918L (sv) 1979-08-07
JPS54116657A (en) 1979-09-11
DE2904150A1 (de) 1979-08-09

Similar Documents

Publication Publication Date Title
FR2416553A1 (fr) Procede de stabilisation thermique de varistors a oxydes metalliques
Nukiyama The maximum and minimum values of the heat Q transmitted from metal to boiling water under atmospheric pressure
ES485398A1 (es) Perfeccionamientos en los soportes refrigerados por liquido para la punta de un electrodo de un horno electrico de fu- sion
GB965820A (en) Process and apparatus for producing glass in ribbon form
US3744989A (en) Method and apparatus for refining the metal of a consumable electrode
SE8304042D0 (sv) Bandvermare med elektriska anordningar innefattande ledande polymerkompositioner
US2044763A (en) Maintaining cable sheath
GB1284068A (en) Improvements in or relating to the drawing of crystalline bodies
CA1099475A (fr) Methode de fabrication d'un fil metallique par coulee continue
SE7711661L (sv) Anordning for framstellning av tradar genom insprutning av en metallstrale i ett kylmedium
ES8601625A1 (es) Perfeccionamientos en los electrodos para hornos de arco electrico
GB1114874A (en) High temperature thermocouples
TH3907A (th) ขั้วอิเลคโตรดติดผนังสำหรับเตาอาร์คไฟฟ้ากระแสตรง
DE687591C (de) Fluessigkeitsgekuehlter Anschlusskopf fuer Heizkoerper zur Erzeugung hoher Temperaturen
TH2945B (th) ขั้วอิเลคโตรดติดผนังสำหรับเตาอาร์คไฟฟ้ากระแสตรง
SU125323A1 (ru) Способ создани высокотемпературного газового потока
SU840140A1 (ru) Способ закалки магнитных материалов
SU399319A1 (ru) Электрический паяльник
Tagaya et al. On the Deterioration of Quenching Oils by Heat Decomposition On the deterioration of quenching oil-V
Fortey et al. High Temperature Furnaces for Glass Melting
SU607446A1 (ru) Способ деформировани металлов и устройстводл ЕгО ОСущЕСТВлЕНи
JPS6326762Y2 (fr)
SU120601A1 (ru) Гальванометрический усилитель
SU369173A1 (fr)
US2504600A (en) Manufacture of cables sheathed with lead base alloy

Legal Events

Date Code Title Description
ST Notification of lapse