GB452813A - Improvements in and relating to arc extinguishing means in electric circuit breakers - Google Patents

Improvements in and relating to arc extinguishing means in electric circuit breakers

Info

Publication number
GB452813A
GB452813A GB18321/35A GB1832135A GB452813A GB 452813 A GB452813 A GB 452813A GB 18321/35 A GB18321/35 A GB 18321/35A GB 1832135 A GB1832135 A GB 1832135A GB 452813 A GB452813 A GB 452813A
Authority
GB
United Kingdom
Prior art keywords
arc
nozzle
channel
restricted
nozzle openings
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
GB18321/35A
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 Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
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 Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of GB452813A publication Critical patent/GB452813A/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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7038—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by a conducting tubular gas flow enhancing nozzle

Landscapes

  • Circuit Breakers (AREA)

Abstract

452,813. Fluid - blast switches. SIEMENS SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. June 26, 1935, No. 18321. Convention date, Aug. 31, 1934. [Class 38 (v)] An arc-extinguishing device consists of a double nozzle which directs a current of compressed gas delivered at a central position between the nozzle openings in two directions axially towards the ends of the electrodes between which the arc is drawn. The gas is conveyed between walls of insulating material in which the double nozzle is formed and the distance apart of the nozzle openings is restricted to an extent such that the zone of low gas velocity located centrally between the openings is restricted to a minimum. The contacts are withdrawn in opposite directions along the axis a-a from a pair of nozzle openings 3, 4, which are coaxial with a-a and formed in the insulating walls 1, 2 of a channel by which the fluid is delivered, from all sides. A pair of ring-shaped members 10, 11 are inserted in the channel to restrict its cross-section in the neighbourhood of the nozzles, the resulting flow-lines being, as shown at 12, caused to penetrate as far as possible towards the axis a-a before being deflected at right angles, so restricting the cross-section of the arc at that point. In Fig. 4, the walls 14, 15 of the channel 13 are conically restricted, and the nozzle openings 16, 17 may be flared as shown in dotted lines. A contact 19 takes the arc when 18 moves out of engagement with the contact 20. The cross-section of the channel 13 is made equal to, or smaller than, the combined cross-sections of the nozzle openings. Arc resistant material such as steatite, carbon, slate, or tungstencopper alloy is used around the nozzle orifices in the restricted portion.
GB18321/35A 1934-08-31 1935-06-26 Improvements in and relating to arc extinguishing means in electric circuit breakers Expired GB452813A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE452813X 1934-08-31

Publications (1)

Publication Number Publication Date
GB452813A true GB452813A (en) 1936-08-31

Family

ID=6538705

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18321/35A Expired GB452813A (en) 1934-08-31 1935-06-26 Improvements in and relating to arc extinguishing means in electric circuit breakers

Country Status (2)

Country Link
FR (1) FR793127A (en)
GB (1) GB452813A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573797A (en) * 1944-02-24 1951-11-06 Latour Andre Switch having one or more tubular contacts
DE767549C (en) * 1939-05-12 1952-12-08 Merlin Gerin Device for extinguishing electric arcs by gaseous means for high-voltage AC switches
DE2030605A1 (en) * 1969-06-23 1971-02-25 Magrini Fab Riun Scarpa Electric self-extinguishing gas pressure switch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767549C (en) * 1939-05-12 1952-12-08 Merlin Gerin Device for extinguishing electric arcs by gaseous means for high-voltage AC switches
US2573797A (en) * 1944-02-24 1951-11-06 Latour Andre Switch having one or more tubular contacts
DE2030605A1 (en) * 1969-06-23 1971-02-25 Magrini Fab Riun Scarpa Electric self-extinguishing gas pressure switch

Also Published As

Publication number Publication date
FR793127A (en) 1935-01-15

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