GB666941A - Improvements in or relating to air break electric circuit interrupters - Google Patents
Improvements in or relating to air break electric circuit interruptersInfo
- Publication number
- GB666941A GB666941A GB908/50A GB90850A GB666941A GB 666941 A GB666941 A GB 666941A GB 908/50 A GB908/50 A GB 908/50A GB 90850 A GB90850 A GB 90850A GB 666941 A GB666941 A GB 666941A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chute
- plates
- arc
- sectional area
- reduction
- 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
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
666,941. Arc-rupturing in switches. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Jan. 13, 1950. [Feb. 23, 1949] No. 908/50. Class 38 (v). The interrupting capacity of an air-break switch having an arc-chute is increased by reducing the cross-sectional area of the exhaust gas path towards the end of the chute, the reduction being stated to compensate for the reduced volume of the gas as'it cools and thus maintain its high velocity. On separation of the arcing contacts 11, 12 the arc rises on to terminal members 18, 19 putting into circuit a series blow-out coil 3 whereby it is driven upwardly along staggered tapering slots 40 in plates 29 of a refractory insulating material. The plates 29 are spaced by lengths of asbestos rope 35, the distance A at the exhaust end of the chute being less than the distance B at the entrance. The reduction in cross-sectional area may alternatively, or additionally, be produced by utilising plates 29 whose thickness increases towards the exhaust end, Fig. 4 (not shown).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US77794A US2687461A (en) | 1949-02-23 | 1949-02-23 | Air-type circuit interrupter |
| US419753A US2777035A (en) | 1949-02-23 | 1954-03-30 | Air-type circuit interrupter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB666941A true GB666941A (en) | 1952-02-20 |
Family
ID=26759678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB908/50A Expired GB666941A (en) | 1949-02-23 | 1950-01-13 | Improvements in or relating to air break electric circuit interrupters |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2777035A (en) |
| FR (1) | FR1017489A (en) |
| GB (1) | GB666941A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1018128B (en) * | 1954-04-26 | 1957-10-24 | Westinghouse Electric Corp | Circuit breaker with arcing chamber |
| DE1025967B (en) * | 1955-04-07 | 1958-03-13 | Westinghouse Electric Corp | Arc extinguishing chamber with plates of insulating material arranged in the path of the arc |
| DE1089038B (en) * | 1955-04-26 | 1960-09-15 | Carlor Emag Elek Zitaets Ag | Electric switch with arc length inside a jacket with iron disks |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US127629A (en) * | 1872-06-04 | Improvement in wash-boards | ||
| US383127A (en) * | 1888-05-22 | Oven attachment |
-
1950
- 1950-01-13 GB GB908/50A patent/GB666941A/en not_active Expired
- 1950-02-22 FR FR1017489D patent/FR1017489A/en not_active Expired
-
1954
- 1954-03-30 US US419753A patent/US2777035A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1018128B (en) * | 1954-04-26 | 1957-10-24 | Westinghouse Electric Corp | Circuit breaker with arcing chamber |
| DE1025967B (en) * | 1955-04-07 | 1958-03-13 | Westinghouse Electric Corp | Arc extinguishing chamber with plates of insulating material arranged in the path of the arc |
| DE1089038B (en) * | 1955-04-26 | 1960-09-15 | Carlor Emag Elek Zitaets Ag | Electric switch with arc length inside a jacket with iron disks |
Also Published As
| Publication number | Publication date |
|---|---|
| US2777035A (en) | 1957-01-08 |
| FR1017489A (en) | 1952-12-11 |
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