GB502443A - Electric circuit breaker having arc-extinguishing arrangements - Google Patents
Electric circuit breaker having arc-extinguishing arrangementsInfo
- Publication number
- GB502443A GB502443A GB11753/38A GB1175338A GB502443A GB 502443 A GB502443 A GB 502443A GB 11753/38 A GB11753/38 A GB 11753/38A GB 1175338 A GB1175338 A GB 1175338A GB 502443 A GB502443 A GB 502443A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- cylinder
- contact
- raised
- extinguishing
- 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
- H01H33/7007—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein the flow is a function of the current being interrupted
Landscapes
- Circuit Breakers (AREA)
Abstract
502,443. Fluid -- blast switches. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. April 19, 1938, No. 11753. Convention date, April 16, 1937. [Class 38 (v)] A circuit - breaker with a differential piston causing a flow of extinguishing fluid through an opening in the piston traversed by the movable contact, is provided with an additional device for extinguishing smallcurrent arcs and consisting of a cylinder and a piston which is movable in the cylinder and actuated by the breaker - operating mechanism. The differential piston 21 works in a cylinder 22 and is cup-shaped to receive the additional device 9, 12, and has slits 27 and channels 28 leading to the space 24 outside the piston. When the movable contact 2 is raised so that its tip has opened the slits 27, the piston is raised by the arc-pressure, thereby forcing a blast of extinguishing medium from the space 24, through the channels 28 and slits 27 on to the arc. When the contact clears opening 30, the blast is directed upwards into the space above the piston-bottom 25. On further movement of the contact 2, a shoulder 17 engages a shoulder on the upper end of the piston 12, which is raised to squeeze fluid from inside the cylinder 9, through openings 15 on to the contact tip, which is just above the opening 14 in wall 13, and also through the bore 16 in the contact 2. In moving downwards, the piston 12 creates a vacuum in cylinder 9 whereby the latter is refilled past the lightlyloaded valve or packing 11. The Specification as open to inspection under Sect. 91 describes also the arrangement according to which the additional piston and cylinder are used alone, the piston being raised and lowered by the engagement of a rim on the contact 2 with shoulders on the upper part of the piston. This subjectmatter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE502443X | 1937-04-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB502443A true GB502443A (en) | 1939-03-17 |
Family
ID=20310779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11753/38A Expired GB502443A (en) | 1937-04-16 | 1938-04-19 | Electric circuit breaker having arc-extinguishing arrangements |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE726619C (en) |
GB (1) | GB502443A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2781435A (en) * | 1951-03-18 | 1957-02-12 | Heilmann Philipp | Arc-extinguishing mechanism for electric switches |
DE1010609B (en) * | 1954-07-13 | 1957-06-19 | Sachsenwerk Licht & Kraft Ag | Electric flow switch |
US2957063A (en) * | 1958-03-07 | 1960-10-18 | Westinghouse Electric Corp | Pumped-gas circuit interrupter |
US3180959A (en) * | 1960-10-28 | 1965-04-27 | Westinghouse Electric Corp | Multi-break fluid-blast circuit breaker |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1134442B (en) * | 1943-10-19 | 1962-08-09 | Fuji Electric Co Ltd | Electric low-liquid circuit breaker |
DE1134134B (en) * | 1957-01-18 | 1962-08-02 | Licentia Gmbh | Electric fluid switch, especially low-oil switch |
-
1938
- 1938-04-17 DE DEST57343D patent/DE726619C/en not_active Expired
- 1938-04-19 GB GB11753/38A patent/GB502443A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2781435A (en) * | 1951-03-18 | 1957-02-12 | Heilmann Philipp | Arc-extinguishing mechanism for electric switches |
DE1010609B (en) * | 1954-07-13 | 1957-06-19 | Sachsenwerk Licht & Kraft Ag | Electric flow switch |
US2957063A (en) * | 1958-03-07 | 1960-10-18 | Westinghouse Electric Corp | Pumped-gas circuit interrupter |
US3180959A (en) * | 1960-10-28 | 1965-04-27 | Westinghouse Electric Corp | Multi-break fluid-blast circuit breaker |
Also Published As
Publication number | Publication date |
---|---|
DE726619C (en) | 1942-10-16 |
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