GB421785A - Improvements relating to arc-extinguishing devices for electric switches - Google Patents

Improvements relating to arc-extinguishing devices for electric switches

Info

Publication number
GB421785A
GB421785A GB17243/34A GB1724334A GB421785A GB 421785 A GB421785 A GB 421785A GB 17243/34 A GB17243/34 A GB 17243/34A GB 1724334 A GB1724334 A GB 1724334A GB 421785 A GB421785 A GB 421785A
Authority
GB
United Kingdom
Prior art keywords
arc
auxiliary electrode
main electrodes
improvements relating
electric switches
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
GB17243/34A
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 GB421785A publication Critical patent/GB421785A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/164—Impedances connected with contacts the impedance being inserted in the circuit by blowing the arc onto an auxiliary electrode

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

421,785. Arc-rupturing in switches. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. June 11, 1934, No. 17243. Convention date, June 10, 1933. [Class 38 (v)] In order to extinguish the arc formed on opening a switch in an A.C. circuit, an auxiliary electrode H is introduced into the arc passing between the main electrodes A, B, the auxiliary electrode being connected to one of the main electrodes through an impedance J which may be an ohmic resistance or a combination of a resistance with a choking coil. The auxiliary electrode may be introduced into the arc by automatically releasing a locking device when the main electrodes separate, or the arc may be diverted on to a stationary auxiliary electrode by means of blowing apparatus or by its natural upward movement. Specification 215,899, [Class 38 (v)], is referred to.
GB17243/34A 1933-06-10 1934-06-11 Improvements relating to arc-extinguishing devices for electric switches Expired GB421785A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE421785X 1933-06-10

Publications (1)

Publication Number Publication Date
GB421785A true GB421785A (en) 1934-12-31

Family

ID=6460027

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17243/34A Expired GB421785A (en) 1933-06-10 1934-06-11 Improvements relating to arc-extinguishing devices for electric switches

Country Status (1)

Country Link
GB (1) GB421785A (en)

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