GB630838A - Improvements in or relating to electric circuit interrupters having arc extinguishing means - Google Patents
Improvements in or relating to electric circuit interrupters having arc extinguishing meansInfo
- Publication number
- GB630838A GB630838A GB34568/47A GB3456847A GB630838A GB 630838 A GB630838 A GB 630838A GB 34568/47 A GB34568/47 A GB 34568/47A GB 3456847 A GB3456847 A GB 3456847A GB 630838 A GB630838 A GB 630838A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arc
- chute
- contacts
- magnetic
- coils
- 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
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
630,838. Arc-rupturing in switches. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Dec. 30, 1947, No. 34568. Convention date, Jan. 4. [Class 38(v)] An air-break circuit-breaker has a magnetic blow-out structure wherein the cross-sectional area of the core 43 is less than that of one of the pole shoes 36 or 37, the ratio preferably being about 80 per cent, although it may be anywhere between 50 and 85 per cent. On opening, clockwise movement of contact carrier 8 about pivot 9 causes the contacts to separate in the following order : contacts 6, 15, 17, then secondary contacts 24, 26, and finally arcing contacts 25, 27. The loop effect caused by terminal' studs 3, 18, and carrier 8 helps to move the arc upwards into the interrupting chamber 2, this movement being aided by a blast of air through a pipe 23 and caused by the downward movement of a cylinder 20 relatively to a piston, not shown, on a rod 21. One part of the arc then roots on arcing horn 30, the arc being in position 32. The magnetic blow-out structure then forces the arc into a chute 39, the structure comprising two parallel-connected coils 34 in series with the arc, and wound on the core 43, the laminated pole shoes 36, 37, extending on either side of the arc chute and having depending sub-pole pieces 42. The portion 44 of the arc is moved to the left into a transfer interrupting stack 47, having an arcing horn 54, by means of of magnetic plates 59, 60. The plates 40 of chute 39 and 48 of stack 47 have tapered slots which are slightly staggered (Figs. 2, 4, not shown), so as to lengthen the arcs. The end plates 67 of the chute 39 are shortened so as to cause the arc gases to diverge, as at 69, thereby reducing the possibility of flashover. The magnetic flux is preferably made to lag the arc current by a small angle, e.g., 10 degrees. This may be done by (a) resistance-shunting coils 34, (b) eddy-current losses in the magnetic circuit, or (c) shading coils 71.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US720166A US2632075A (en) | 1947-01-04 | 1947-01-04 | Circuit interrupter |
Publications (1)
Publication Number | Publication Date |
---|---|
GB630838A true GB630838A (en) | 1949-10-21 |
Family
ID=24892913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34568/47A Expired GB630838A (en) | 1947-01-04 | 1947-12-30 | Improvements in or relating to electric circuit interrupters having arc extinguishing means |
Country Status (5)
Country | Link |
---|---|
US (1) | US2632075A (en) |
BE (1) | BE479338A (en) |
CH (1) | CH273218A (en) |
FR (1) | FR959368A (en) |
GB (1) | GB630838A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3024331A (en) * | 1957-11-06 | 1962-03-06 | Westinghouse Electric Corp | Circuit interrupter |
US3070681A (en) * | 1958-10-29 | 1962-12-25 | Ite Circuit Breaker Ltd | Face wound blowout coil |
US3050602A (en) * | 1960-03-07 | 1962-08-21 | Gen Electric | Circuit interrupter |
US3183409A (en) * | 1960-11-17 | 1965-05-11 | Cutler Hammer Inc | Electromagnetic contactor |
US3081389A (en) * | 1960-12-19 | 1963-03-12 | Ite Circuit Breaker Ltd | Uninterrupted arc chute venteng path for jump gap and runner |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US463762A (en) * | 1891-11-24 | Electric-arc interrupter | ||
DE556524C (en) * | 1932-08-10 | Siemens Schuckertwerke Akt Ges | Procedure for quickly switching off alternating current | |
US428650A (en) * | 1890-05-27 | Alternating-current magnetic device | ||
US938740A (en) * | 1908-05-23 | 1909-11-02 | American Electric Telephone Co | Electromagnetic device. |
US1164257A (en) * | 1912-12-26 | 1915-12-14 | Gen Electric | Circuit-interrupting device. |
US1681473A (en) * | 1920-09-07 | 1928-08-21 | Automatic Electric Inc | Electromagnetic relay |
FR657067A (en) * | 1928-05-10 | 1929-05-16 | Improvements to electric arc blowing devices in circuit breakers and switches | |
US1879958A (en) * | 1929-06-29 | 1932-09-27 | Condit Electrical Mfg Corp | Circuit interrupter |
US1872387A (en) * | 1929-09-11 | 1932-08-16 | Westinghouse Electric & Mfg Co | Circuit breaker |
US1904463A (en) * | 1929-11-27 | 1933-04-18 | Gen Electric | Circuit interrupting apparatus |
US1922060A (en) * | 1931-01-15 | 1933-08-15 | Sachs Joseph | Arc extinguishing device for electric switches |
US1963643A (en) * | 1933-02-23 | 1934-06-19 | Westinghouse Electric & Mfg Co | Circuit interrupter |
US2242905A (en) * | 1939-01-04 | 1941-05-20 | Westinghouse Electric & Mfg Co | Circuit interrupter |
US2290708A (en) * | 1940-07-16 | 1942-07-21 | Gen Electric | Gas blast circuit breaker |
US2276859A (en) * | 1940-10-29 | 1942-03-17 | Westinghouse Electric & Mfg Co | Circuit interrupter |
CA432817A (en) * | 1942-08-26 | 1946-01-29 | Canadian Westinghouse Company | Electric switch |
BE482710A (en) * | 1944-04-13 | |||
US2468422A (en) * | 1945-06-20 | 1949-04-26 | Ite Circuit Breaker Ltd | Arc chute |
-
0
- BE BE479338D patent/BE479338A/xx unknown
- FR FR959368D patent/FR959368A/fr not_active Expired
-
1947
- 1947-01-04 US US720166A patent/US2632075A/en not_active Expired - Lifetime
- 1947-12-30 CH CH273218D patent/CH273218A/en unknown
- 1947-12-30 GB GB34568/47A patent/GB630838A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH273218A (en) | 1951-01-31 |
BE479338A (en) | |
FR959368A (en) | 1950-03-29 |
US2632075A (en) | 1953-03-17 |
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