GB419274A - Improvements in and relating to means for quenching arcs in electric circuit breakers - Google Patents

Improvements in and relating to means for quenching arcs in electric circuit breakers

Info

Publication number
GB419274A
GB419274A GB20122/34A GB2012234A GB419274A GB 419274 A GB419274 A GB 419274A GB 20122/34 A GB20122/34 A GB 20122/34A GB 2012234 A GB2012234 A GB 2012234A GB 419274 A GB419274 A GB 419274A
Authority
GB
United Kingdom
Prior art keywords
arc
section
potential
july
series
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
GB20122/34A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB419274A publication Critical patent/GB419274A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
    • G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
    • G01C9/26—Details
    • G01C9/32—Means for facilitating the observation of the position of the bubble, e.g. illuminating 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
    • H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Discharge Heating (AREA)

Abstract

419,274. Arc-rupturing in switches. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. July 9, 1934, No. 20122. Convention date, July 7, 1933. [Class 38 (v).] The arc formed on breaking an A.C. circuit is quenched by connecting, in parallel with a section of the arc, a discharge device V of such a character that its breakdown potential lies below the ignition potential of the section of the arc, while its reverse discharge potential is so high that the device remains non-conducting for a sufficient period when the voltage reverses to allow of the deionization of the remaining section of the arc. The device V may be connected in series with a resistance W and in parallel with a high resistance Wo across one of a pair of breaks in series, or alternatively, as shown, it may be connected between one of the electrodes E2 and an auxiliary electrode C placed in the path of the arc formed between the main electrodes E1, E2. The device V may be of the mercury cathode type, or it may have a heated cathode with or without grid control.
GB20122/34A 1933-07-07 1934-07-09 Improvements in and relating to means for quenching arcs in electric circuit breakers Expired GB419274A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE419274X 1909-08-05

Publications (1)

Publication Number Publication Date
GB419274A true GB419274A (en) 1934-11-08

Family

ID=6448962

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20122/34A Expired GB419274A (en) 1933-07-07 1934-07-09 Improvements in and relating to means for quenching arcs in electric circuit breakers

Country Status (2)

Country Link
FR (1) FR419274A (en)
GB (1) GB419274A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619524A (en) * 1942-04-25 1952-11-25 Hartford Nat Bank & Trust Co Arc extinguishing system
DE767767C (en) * 1937-04-06 1953-05-18 Automatic Telephone & Elect Spark extinguishing arrangement for telecommunications, especially telephone systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767767C (en) * 1937-04-06 1953-05-18 Automatic Telephone & Elect Spark extinguishing arrangement for telecommunications, especially telephone systems
US2619524A (en) * 1942-04-25 1952-11-25 Hartford Nat Bank & Trust Co Arc extinguishing system

Also Published As

Publication number Publication date
FR419274A (en) 1910-12-30

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