GB1280938A - Improvements in or relating to gas-discharge surge voltage arresters - Google Patents

Improvements in or relating to gas-discharge surge voltage arresters

Info

Publication number
GB1280938A
GB1280938A GB4828470A GB4828470A GB1280938A GB 1280938 A GB1280938 A GB 1280938A GB 4828470 A GB4828470 A GB 4828470A GB 4828470 A GB4828470 A GB 4828470A GB 1280938 A GB1280938 A GB 1280938A
Authority
GB
United Kingdom
Prior art keywords
grain size
titanium hydride
magnesium oxide
relating
gas
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
GB4828470A
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of GB1280938A publication Critical patent/GB1280938A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/20—Means for starting arc or facilitating ignition of spark gap
    • H01T1/22—Means for starting arc or facilitating ignition of spark gap by the shape or the composition of the electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • H01J17/06—Cathodes

Landscapes

  • Compositions Of Oxide Ceramics (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Glass Compositions (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

1280938 Electrode materials SIEMENS AG 12 Oct 1970 [13 Oct 1969] 48284/70 Heading H1D At least one of the electrodes 2, 3 of a gasdischarge surge arrester has a layer 4 of a pasty mixture containing an alkali metal halide and titanium hydride. The layer may also contain magnesium oxide. The arrester preferably contains a filling of rare gas. Electrodes 3 of a Ni-Fe or Ni-Fe-Co alloy are sealed to a tubular insulator 1 of glass or ceramic. The constituents of the layers 4 may be in powder form containing between 25 and 95% by weight of alkali metal halide of grain size 0À2 to 20 Á, between 5 and 75% titanium hydride of grain size 0À2 to 20 Á, and between 0 and 50% magnesium oxide of grain size 0À2 to 1 Á. Preferred compositions are 75% potassium chloride or iodide, and 25% titanium hydride, or 45% potassium bromide or iodide of grain size 1 to 10 Á, 5% titanium hydride of grain size 1 to 10 Á, and 50% magnesium oxide of grain size less than 1 Á.
GB4828470A 1969-10-13 1970-10-12 Improvements in or relating to gas-discharge surge voltage arresters Expired GB1280938A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691951601 DE1951601C3 (en) 1969-10-13 1969-10-13 Gas discharge surge arrester

Publications (1)

Publication Number Publication Date
GB1280938A true GB1280938A (en) 1972-07-12

Family

ID=5748071

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4828470A Expired GB1280938A (en) 1969-10-13 1970-10-12 Improvements in or relating to gas-discharge surge voltage arresters

Country Status (5)

Country Link
AT (1) AT297126B (en)
CH (1) CH519805A (en)
DE (1) DE1951601C3 (en)
FR (1) FR2065348A5 (en)
GB (1) GB1280938A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181887A (en) * 1985-10-02 1987-04-29 M O Valve Co Ltd Electrode of surge arrester
US5450273A (en) * 1992-10-22 1995-09-12 Siemens Aktiengesellschaft Encapsulated spark gap and method of manufacturing

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451628A1 (en) * 1979-03-16 1980-10-10 Tubes Lampes Elect Cie Indle Voltage arrester gap filled with gas mixture - comprising inert and reducing gas, closed by metal halide that lowers breakdown voltage
DE2914836C2 (en) * 1979-04-11 1983-11-17 Siemens AG, 1000 Berlin und 8000 München Manufacturing process for the electrode activation compound in a gas discharge tube
DE3100924A1 (en) * 1981-01-14 1982-08-05 Siemens AG, 1000 Berlin und 8000 München "GAS DISCHARGE SURGE ARRESTER"
DE4226077A1 (en) * 1992-08-06 1994-02-10 Siemens Ag Electrode material for gas discharge switch - contains insol. non-oxidic emission active component esp. refractory metal carbide
DE4318994C2 (en) * 1993-05-26 1995-04-20 Siemens Ag Gas-filled surge arrester

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181887A (en) * 1985-10-02 1987-04-29 M O Valve Co Ltd Electrode of surge arrester
US5450273A (en) * 1992-10-22 1995-09-12 Siemens Aktiengesellschaft Encapsulated spark gap and method of manufacturing

Also Published As

Publication number Publication date
AT297126B (en) 1972-03-10
DE1951601C3 (en) 1975-07-31
DE1951601A1 (en) 1971-04-22
FR2065348A5 (en) 1971-07-23
CH519805A (en) 1972-02-29
DE1951601B2 (en) 1974-12-19

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee