DE3070613D1 - Surge voltage arrester with ventsafe feature - Google Patents

Surge voltage arrester with ventsafe feature

Info

Publication number
DE3070613D1
DE3070613D1 DE8080302592T DE3070613T DE3070613D1 DE 3070613 D1 DE3070613 D1 DE 3070613D1 DE 8080302592 T DE8080302592 T DE 8080302592T DE 3070613 T DE3070613 T DE 3070613T DE 3070613 D1 DE3070613 D1 DE 3070613D1
Authority
DE
Germany
Prior art keywords
gas tube
arrester
roughened
air gap
cup
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
DE8080302592T
Other languages
German (de)
Inventor
Alexander George Gilberts
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.)
Reliance Electric Co
Original Assignee
Reliance 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 Reliance Electric Co filed Critical Reliance Electric Co
Application granted granted Critical
Publication of DE3070613D1 publication Critical patent/DE3070613D1/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
    • H01T1/14—Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

A surge voltage arrester assembly comprises a primary gas tube surge arrester (22) and an air gap secondary arrester that provides surge protection should the gas tube become vented to atmosphere. The secondary arrester has the air gap (42) defined by a rim (45) of one of the gas tube electrodes and an opposed roughened surface (40) of a metallic cup into which the gas tube is positioned. The roughened cup surface has a coating of graphite (43) applied thereto. The electrode rim (45) may or may not be roughened and/or coated. In a three element version of the invention wherein the gas tube has two line electrodes (70, 70) and a ground electrode (72), metallic cups (80, 80) are provided at opposite ends of the gas tube to cooperate with the ground electrode for forming secondary air gaps (86, 86) for each line electrode. The cup surfaces at the secondary air gaps are roughened and graphite (83) coated. An O-ring (88) seals each secondary air gap against the entrance of contaminants.
DE8080302592T 1980-07-30 1980-07-30 Surge voltage arrester with ventsafe feature Expired DE3070613D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80302592A EP0044894B1 (en) 1980-07-30 1980-07-30 Surge voltage arrester with ventsafe feature

Publications (1)

Publication Number Publication Date
DE3070613D1 true DE3070613D1 (en) 1985-06-13

Family

ID=8187231

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080302592T Expired DE3070613D1 (en) 1980-07-30 1980-07-30 Surge voltage arrester with ventsafe feature

Country Status (2)

Country Link
EP (1) EP0044894B1 (en)
DE (1) DE3070613D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340923A (en) * 1981-03-12 1982-07-20 General Instrument Corporation Electrical circuit protector
GB2200243B (en) * 1987-01-27 1990-09-05 English Electric Valve Co Ltd Protection device
GB2205992B (en) * 1987-05-01 1991-07-17 Dubilier Plc Gas-filled surge arrestor
SE9804538D0 (en) 1998-12-23 1998-12-23 Jensen Elektronik Ab Gas discharge tube

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1488936A (en) * 1916-05-08 1924-04-01 Frederick R Parker High-potential electricity-arrester electrode
US3755715A (en) * 1972-10-11 1973-08-28 Reliable Electric Co Line protector having arrester and fail-safe circuit bypassing the arrester
US4148089A (en) * 1977-12-22 1979-04-03 Bell Telephone Laboratories, Incorporated Voltage surge protector
US4208694A (en) * 1978-10-11 1980-06-17 Reliable Electric Company Line protector
US4241374A (en) * 1979-01-29 1980-12-23 Reliable Electric Company Surge voltage arrester with ventsafe feature

Also Published As

Publication number Publication date
EP0044894B1 (en) 1985-05-08
EP0044894A1 (en) 1982-02-03

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee