GB544152A - Improvements in or relating to electric circuit interrupters having arc extinguishing devices - Google Patents
Improvements in or relating to electric circuit interrupters having arc extinguishing devicesInfo
- Publication number
- GB544152A GB544152A GB334/41A GB33441A GB544152A GB 544152 A GB544152 A GB 544152A GB 334/41 A GB334/41 A GB 334/41A GB 33441 A GB33441 A GB 33441A GB 544152 A GB544152 A GB 544152A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arc
- plates
- blast
- chute
- 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
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
- H01H33/76—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
544,152. Gas-blast switches; actuation of switches. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Jan. 9, 1941, No. 334. Convention date, Jan. 23, 1940. [Class 38 (v)] A gas-blast switch comprises a movable contact 33 separable from a fixed contact 17 in an arc-chute 13 and subjected to a cross blast through a hollow supporting insulator 11 from container 7. Contact 33 is pivoted at 35 and operated by a link 53 and lever 49 from a fluid motor 43, the lever 49 having an extension 59 which opens the blast valve 63 during the closing and opening switch movements. The chute, Fig. 2, comprises side plates 21 and end plates 23, 25, and leads into a passage 69 comprising walls 27, 29 and members 67, Fig. 3 arranged so that the passage rapidly widens from the point about halfway across the contacts. Space plates 73 of gas-forming .material extend into the neighbourhood of the arc and have notches 75 into which the arc is blown and so kept away from the walls of member 67. The lower ends of the plates 73 fit in grooves in the latter and are tapered so as to provide parallel-sided passages 77 at those ends. Insulator 11 contains a nozzle 65 which directs the blast, at the velocity of sound, so as to prevent it spreading when it leaves the nozzle during the interruption of low currents, at the tip of the plate 73 which is nearest the fixed contact 17. The arc is thus forced against the edges of and between, the plates 73, excessive penetration into the chute being prevented by metal plates 79. The gas produced by the arc on plates 73 may be excessive at heavy currents but the pressure at the nozzle 65 is relieved by the space between the arc in the upper parts of the notches 75 and the diverging wall of members 67, so allowing removal of the ionized arc gases from behind the arc. The degree of divergence and separation between the plates 73 varies through the chute, as does also the number of metal cooling grids 81 which are made concave towards the arc so as to keep the gases away from the plates 73.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US313736A US2272380A (en) | 1940-01-13 | 1940-01-13 | Circuit interrupter |
Publications (1)
Publication Number | Publication Date |
---|---|
GB544152A true GB544152A (en) | 1942-03-30 |
Family
ID=23216921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB334/41A Expired GB544152A (en) | 1940-01-13 | 1941-01-09 | Improvements in or relating to electric circuit interrupters having arc extinguishing devices |
Country Status (6)
Country | Link |
---|---|
US (1) | US2272380A (en) |
BE (1) | BE483217A (en) |
CH (1) | CH218490A (en) |
FR (1) | FR938275A (en) |
GB (1) | GB544152A (en) |
NL (1) | NL67950C (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2449518A (en) * | 1943-02-15 | 1948-09-14 | Westinghouse Electric Corp | Circuit interrupter |
US2455998A (en) * | 1943-12-20 | 1948-12-14 | Electrical Eng Equipment Co | Electrical load breaking device |
US2428482A (en) * | 1945-02-28 | 1947-10-07 | Westinghouse Electric Corp | Circuit interrupter |
US2454121A (en) * | 1945-04-03 | 1948-11-16 | Westinghouse Electric Corp | Circuit interrupter |
US2526387A (en) * | 1946-01-24 | 1950-10-17 | Milliken Humphreys | Air blast circuit breaker |
US2535556A (en) * | 1946-09-06 | 1950-12-26 | Air Reduction | Electric switch |
US2586290A (en) * | 1947-11-01 | 1952-02-19 | Westinghouse Electric Corp | Circuit interrupter |
US2585879A (en) * | 1949-01-26 | 1952-02-12 | Mcgraw Electric Co | Circuit breaker |
US2639353A (en) * | 1950-01-24 | 1953-05-19 | Allis Chalmers Mfg Co | Circuit breaker with arc chute short circuiting sections of the arc |
US2671146A (en) * | 1952-01-14 | 1954-03-02 | Gen Electric | Interrupting unit for electric circuit breakers |
GB776747A (en) * | 1954-03-16 | 1957-06-12 | Reyrolle A & Co Ltd | Improvements relating to high-voltage electric circuit-breakers of the air-break type |
US3033961A (en) * | 1960-05-04 | 1962-05-08 | Ite Circuit Breaker Ltd | Serpentine corrugated arc product coolers |
US3179775A (en) * | 1960-12-07 | 1965-04-20 | Westinghouse Electric Corp | Circulating-type compressed-gas circuit interrupters with composite blast-tube extension |
FR2584230B1 (en) * | 1985-06-28 | 1989-02-03 | Merlin Gerin | ARC EXTINGUISHING CHAMBER FOR LOW VOLTAGE CIRCUIT BREAKER WITH AIR CUT |
-
0
- NL NL67950D patent/NL67950C/xx active
- BE BE483217D patent/BE483217A/xx unknown
-
1940
- 1940-01-13 US US313736A patent/US2272380A/en not_active Expired - Lifetime
-
1941
- 1941-01-09 GB GB334/41A patent/GB544152A/en not_active Expired
- 1941-01-10 CH CH218490D patent/CH218490A/en unknown
-
1946
- 1946-07-30 FR FR938275D patent/FR938275A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL67950C (en) | |
CH218490A (en) | 1941-12-15 |
FR938275A (en) | 1948-09-09 |
BE483217A (en) | |
US2272380A (en) | 1942-02-10 |
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